leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
6b8d9117cc
linux/net/wireless/nl80211.c
Luciano Coelho f89f46cf3a nl80211: check matches array length before acessing it 
If the userspace passes a malformed sched scan request (or a net
detect wowlan configuration) by adding a NL80211_ATTR_SCHED_SCAN_MATCH
attribute without any nested matchsets, a NULL pointer dereference
will occur.  Fix this by checking that we do have matchsets in our
array before trying to access it.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000024
IP: [<ffffffffa002fd69>] nl80211_parse_sched_scan.part.67+0x6e9/0x900 [cfg80211]
PGD 865c067 PUD 865b067 PMD 0
Oops: 0002 [#1] SMP
Modules linked in: iwlmvm(O) iwlwifi(O) mac80211(O) cfg80211(O) compat(O) [last unloaded: compat]
CPU: 2 PID: 2442 Comm: iw Tainted: G           O   3.17.2 #31
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
task: ffff880013800790 ti: ffff880008d80000 task.ti: ffff880008d80000
RIP: 0010:[<ffffffffa002fd69>]  [<ffffffffa002fd69>] nl80211_parse_sched_scan.part.67+0x6e9/0x900 [cfg80211]
RSP: 0018:ffff880008d838d0  EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000143c RSI: 0000000000000000 RDI: ffff880008ee8dd0
RBP: ffff880008d83948 R08: 0000000000000002 R09: 0000000000000019
R10: ffff88001d1b3c40 R11: 0000000000000002 R12: ffff880019e85e00
R13: 00000000fffffed4 R14: ffff880009757800 R15: 0000000000001388
FS:  00007fa3b6d13700(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000024 CR3: 0000000008670000 CR4: 00000000000006e0
Stack:
 ffff880009757800 ffff880000000001 0000000000000000 ffff880008ee84e0
 0000000000000000 ffff880009757800 00000000fffffed4 ffff880008d83948
 ffffffff814689c9 ffff880009757800 ffff880008ee8000 0000000000000000
Call Trace:
 [<ffffffff814689c9>] ? nla_parse+0xb9/0x120
 [<ffffffffa00306de>] nl80211_set_wowlan+0x75e/0x960 [cfg80211]
 [<ffffffff810bf3d5>] ? mark_held_locks+0x75/0xa0
 [<ffffffff8161a77b>] genl_family_rcv_msg+0x18b/0x360
 [<ffffffff810bf66d>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff8161a9d4>] genl_rcv_msg+0x84/0xc0
 [<ffffffff8161a950>] ? genl_family_rcv_msg+0x360/0x360
 [<ffffffff81618e79>] netlink_rcv_skb+0xa9/0xd0
 [<ffffffff81619458>] genl_rcv+0x28/0x40
 [<ffffffff816184a5>] netlink_unicast+0x105/0x180
 [<ffffffff8161886f>] netlink_sendmsg+0x34f/0x7a0
 [<ffffffff8105a097>] ? kvm_clock_read+0x27/0x40
 [<ffffffff815c644d>] sock_sendmsg+0x8d/0xc0
 [<ffffffff811a75c9>] ? might_fault+0xb9/0xc0
 [<ffffffff811a756e>] ? might_fault+0x5e/0xc0
 [<ffffffff815d5d26>] ? verify_iovec+0x56/0xe0
 [<ffffffff815c73e0>] ___sys_sendmsg+0x3d0/0x3e0
 [<ffffffff810a7be8>] ? sched_clock_cpu+0x98/0xd0
 [<ffffffff810611b4>] ? __do_page_fault+0x254/0x580
 [<ffffffff810bb39f>] ? up_read+0x1f/0x40
 [<ffffffff810611b4>] ? __do_page_fault+0x254/0x580
 [<ffffffff812146ed>] ? __fget_light+0x13d/0x160
 [<ffffffff815c7b02>] __sys_sendmsg+0x42/0x80
 [<ffffffff815c7b52>] SyS_sendmsg+0x12/0x20
 [<ffffffff81751f69>] system_call_fastpath+0x16/0x1b

Fixes: ea73cbce4e ("nl80211: fix scheduled scan RSSI matchset attribute confusion")
Cc: stable@vger.kernel.org [3.15+]
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-12 12:33:25 +01:00

12654 lines
333 KiB
C
Raw Blame History

/*
* This is the new netlink-based wireless configuration interface.
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
*/
#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/if_ether.h>
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <linux/netlink.h>
#include <linux/etherdevice.h>
#include <net/net_namespace.h>
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include <net/sock.h>
#include <net/inet_connection_sock.h>
#include "core.h"
#include "nl80211.h"
#include "reg.h"
#include "rdev-ops.h"
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_crypto_settings *settings,
int cipher_limit);
static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info);
static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info);
/* the netlink family */
static struct genl_family nl80211_fam = {
.id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
.name = NL80211_GENL_NAME, /* have users key off the name instead */
.hdrsize = 0, /* no private header */
.version = 1, /* no particular meaning now */
.maxattr = NL80211_ATTR_MAX,
.netnsok = true,
.pre_doit = nl80211_pre_doit,
.post_doit = nl80211_post_doit,
};
/* multicast groups */
enum nl80211_multicast_groups {
NL80211_MCGRP_CONFIG,
NL80211_MCGRP_SCAN,
NL80211_MCGRP_REGULATORY,
NL80211_MCGRP_MLME,
NL80211_MCGRP_VENDOR,
NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
};
static const struct genl_multicast_group nl80211_mcgrps[] = {
[NL80211_MCGRP_CONFIG] = { .name = "config", },
[NL80211_MCGRP_SCAN] = { .name = "scan", },
[NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
[NL80211_MCGRP_MLME] = { .name = "mlme", },
[NL80211_MCGRP_VENDOR] = { .name = "vendor", },
#ifdef CONFIG_NL80211_TESTMODE
[NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
#endif
};
/* returns ERR_PTR values */
static struct wireless_dev *
__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
{
struct cfg80211_registered_device *rdev;
struct wireless_dev *result = NULL;
bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
u64 wdev_id;
int wiphy_idx = -1;
int ifidx = -1;
ASSERT_RTNL();
if (!have_ifidx && !have_wdev_id)
return ERR_PTR(-EINVAL);
if (have_ifidx)
ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
if (have_wdev_id) {
wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
wiphy_idx = wdev_id >> 32;
}
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
struct wireless_dev *wdev;
if (wiphy_net(&rdev->wiphy) != netns)
continue;
if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
continue;
list_for_each_entry(wdev, &rdev->wdev_list, list) {
if (have_ifidx && wdev->netdev &&
wdev->netdev->ifindex == ifidx) {
result = wdev;
break;
}
if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
result = wdev;
break;
}
}
if (result)
break;
}
if (result)
return result;
return ERR_PTR(-ENODEV);
}
static struct cfg80211_registered_device *
__cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
{
struct cfg80211_registered_device *rdev = NULL, *tmp;
struct net_device *netdev;
ASSERT_RTNL();
if (!attrs[NL80211_ATTR_WIPHY] &&
!attrs[NL80211_ATTR_IFINDEX] &&
!attrs[NL80211_ATTR_WDEV])
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_WIPHY])
rdev = cfg80211_rdev_by_wiphy_idx(
nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
if (attrs[NL80211_ATTR_WDEV]) {
u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
struct wireless_dev *wdev;
bool found = false;
tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
if (tmp) {
/* make sure wdev exists */
list_for_each_entry(wdev, &tmp->wdev_list, list) {
if (wdev->identifier != (u32)wdev_id)
continue;
found = true;
break;
}
if (!found)
tmp = NULL;
if (rdev && tmp != rdev)
return ERR_PTR(-EINVAL);
rdev = tmp;
}
}
if (attrs[NL80211_ATTR_IFINDEX]) {
int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(netns, ifindex);
if (netdev) {
if (netdev->ieee80211_ptr)
tmp = wiphy_to_rdev(
netdev->ieee80211_ptr->wiphy);
else
tmp = NULL;
/* not wireless device -- return error */
if (!tmp)
return ERR_PTR(-EINVAL);
/* mismatch -- return error */
if (rdev && tmp != rdev)
return ERR_PTR(-EINVAL);
rdev = tmp;
}
}
if (!rdev)
return ERR_PTR(-ENODEV);
if (netns != wiphy_net(&rdev->wiphy))
return ERR_PTR(-ENODEV);
return rdev;
}
/*
* This function returns a pointer to the driver
* that the genl_info item that is passed refers to.
*
* The result of this can be a PTR_ERR and hence must
* be checked with IS_ERR() for errors.
*/
static struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
{
return __cfg80211_rdev_from_attrs(netns, info->attrs);
}
/* policy for the attributes */
static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
.len = 20-1 },
[NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
[NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
[NL80211_ATTR_MAC] = { .len = ETH_ALEN },
[NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
[NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
[NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
.len = WLAN_MAX_KEY_LEN },
[NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
[NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
[NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
[NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
[NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
[NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
[NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
[NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
[NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_MESH_ID_LEN },
[NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
[NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
[NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
[NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
[NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
[NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
[NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
[NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
[NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
[NL80211_ATTR_IE] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
[NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
[NL80211_ATTR_SSID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_SSID_LEN },
[NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
[NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
[NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
[NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
[NL80211_ATTR_STA_FLAGS2] = {
.len = sizeof(struct nl80211_sta_flag_update),
},
[NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
[NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
[NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
[NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
[NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
[NL80211_ATTR_PID] = { .type = NLA_U32 },
[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
.len = WLAN_PMKID_LEN },
[NL80211_ATTR_DURATION] = { .type = NLA_U32 },
[NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
[NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
[NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
[NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
[NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
[NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
[NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
[NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
[NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
[NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
[NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
[NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
[NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
[NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
[NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
[NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
[NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
[NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
[NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
[NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
[NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
[NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
[NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
[NL80211_ATTR_HT_CAPABILITY_MASK] = {
.len = NL80211_HT_CAPABILITY_LEN
},
[NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
[NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
[NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
[NL80211_ATTR_WDEV] = { .type = NLA_U64 },
[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
[NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
[NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
[NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
[NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
[NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
[NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
[NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
[NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
[NL80211_ATTR_VHT_CAPABILITY_MASK] = {
.len = NL80211_VHT_CAPABILITY_LEN,
},
[NL80211_ATTR_MDID] = { .type = NLA_U16 },
[NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
[NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
[NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
[NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
[NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
[NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
[NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
[NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
.len = IEEE80211_QOS_MAP_LEN_MAX },
[NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
[NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
[NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
[NL80211_ATTR_TSID] = { .type = NLA_U8 },
[NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
};
/* policy for the key attributes */
static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
[NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
[NL80211_KEY_IDX] = { .type = NLA_U8 },
[NL80211_KEY_CIPHER] = { .type = NLA_U32 },
[NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
[NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
[NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
[NL80211_KEY_TYPE] = { .type = NLA_U32 },
[NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
};
/* policy for the key default flags */
static const struct nla_policy
nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
[NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
[NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
};
/* policy for WoWLAN attributes */
static const struct nla_policy
nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
[NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
[NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
[NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
};
static const struct nla_policy
nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
[NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
[NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
[NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_seq)
},
[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
.len = sizeof(struct nl80211_wowlan_tcp_data_token)
},
[NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
[NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
};
/* policy for coalesce rule attributes */
static const struct nla_policy
nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
[NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
[NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
};
/* policy for GTK rekey offload attributes */
static const struct nla_policy
nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
[NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
[NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
[NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
};
static const struct nla_policy
nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_SSID_LEN },
[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
};
static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct cfg80211_registered_device **rdev,
struct wireless_dev **wdev)
{
int err;
rtnl_lock();
if (!cb->args[0]) {
err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
nl80211_fam.attrbuf, nl80211_fam.maxattr,
nl80211_policy);
if (err)
goto out_unlock;
*wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
nl80211_fam.attrbuf);
if (IS_ERR(*wdev)) {
err = PTR_ERR(*wdev);
goto out_unlock;
}
*rdev = wiphy_to_rdev((*wdev)->wiphy);
/* 0 is the first index - add 1 to parse only once */
cb->args[0] = (*rdev)->wiphy_idx + 1;
cb->args[1] = (*wdev)->identifier;
} else {
/* subtract the 1 again here */
struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
struct wireless_dev *tmp;
if (!wiphy) {
err = -ENODEV;
goto out_unlock;
}
*rdev = wiphy_to_rdev(wiphy);
*wdev = NULL;
list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
if (tmp->identifier == cb->args[1]) {
*wdev = tmp;
break;
}
}
if (!*wdev) {
err = -ENODEV;
goto out_unlock;
}
}
return 0;
out_unlock:
rtnl_unlock();
return err;
}
static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
{
rtnl_unlock();
}
/* IE validation */
static bool is_valid_ie_attr(const struct nlattr *attr)
{
const u8 *pos;
int len;
if (!attr)
return true;
pos = nla_data(attr);
len = nla_len(attr);
while (len) {
u8 elemlen;
if (len < 2)
return false;
len -= 2;
elemlen = pos[1];
if (elemlen > len)
return false;
len -= elemlen;
pos += 2 + elemlen;
}
return true;
}
/* message building helper */
static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
int flags, u8 cmd)
{
/* since there is no private header just add the generic one */
return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
}
static int nl80211_msg_put_channel(struct sk_buff *msg,
struct ieee80211_channel *chan,
bool large)
{
/* Some channels must be completely excluded from the
* list to protect old user-space tools from breaking
*/
if (!large && chan->flags &
(IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
return 0;
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
chan->center_freq))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
goto nla_put_failure;
if (chan->flags & IEEE80211_CHAN_NO_IR) {
if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
goto nla_put_failure;
if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
goto nla_put_failure;
}
if (chan->flags & IEEE80211_CHAN_RADAR) {
if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
goto nla_put_failure;
if (large) {
u32 time;
time = elapsed_jiffies_msecs(chan->dfs_state_entered);
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
chan->dfs_state))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
time))
goto nla_put_failure;
if (nla_put_u32(msg,
NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
chan->dfs_cac_ms))
goto nla_put_failure;
}
}
if (large) {
if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
goto nla_put_failure;
}
if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
DBM_TO_MBM(chan->max_power)))
goto nla_put_failure;
return 0;
nla_put_failure:
return -ENOBUFS;
}
/* netlink command implementations */
struct key_parse {
struct key_params p;
int idx;
int type;
bool def, defmgmt;
bool def_uni, def_multi;
};
static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
{
struct nlattr *tb[NL80211_KEY_MAX + 1];
int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
nl80211_key_policy);
if (err)
return err;
k->def = !!tb[NL80211_KEY_DEFAULT];
k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
if (k->def) {
k->def_uni = true;
k->def_multi = true;
}
if (k->defmgmt)
k->def_multi = true;
if (tb[NL80211_KEY_IDX])
k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
if (tb[NL80211_KEY_DATA]) {
k->p.key = nla_data(tb[NL80211_KEY_DATA]);
k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
}
if (tb[NL80211_KEY_SEQ]) {
k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
}
if (tb[NL80211_KEY_CIPHER])
k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
if (tb[NL80211_KEY_TYPE]) {
k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
return -EINVAL;
}
if (tb[NL80211_KEY_DEFAULT_TYPES]) {
struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
tb[NL80211_KEY_DEFAULT_TYPES],
nl80211_key_default_policy);
if (err)
return err;
k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
}
return 0;
}
static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
{
if (info->attrs[NL80211_ATTR_KEY_DATA]) {
k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
}
if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
}
if (info->attrs[NL80211_ATTR_KEY_IDX])
k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
if (info->attrs[NL80211_ATTR_KEY_CIPHER])
k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
if (k->def) {
k->def_uni = true;
k->def_multi = true;
}
if (k->defmgmt)
k->def_multi = true;
if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
int err = nla_parse_nested(
kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
nl80211_key_default_policy);
if (err)
return err;
k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
}
return 0;
}
static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
{
int err;
memset(k, 0, sizeof(*k));
k->idx = -1;
k->type = -1;
if (info->attrs[NL80211_ATTR_KEY])
err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
else
err = nl80211_parse_key_old(info, k);
if (err)
return err;
if (k->def && k->defmgmt)
return -EINVAL;
if (k->defmgmt) {
if (k->def_uni || !k->def_multi)
return -EINVAL;
}
if (k->idx != -1) {
if (k->defmgmt) {
if (k->idx < 4 || k->idx > 5)
return -EINVAL;
} else if (k->def) {
if (k->idx < 0 || k->idx > 3)
return -EINVAL;
} else {
if (k->idx < 0 || k->idx > 5)
return -EINVAL;
}
}
return 0;
}
static struct cfg80211_cached_keys *
nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
struct nlattr *keys, bool *no_ht)
{
struct key_parse parse;
struct nlattr *key;
struct cfg80211_cached_keys *result;
int rem, err, def = 0;
result = kzalloc(sizeof(*result), GFP_KERNEL);
if (!result)
return ERR_PTR(-ENOMEM);
result->def = -1;
result->defmgmt = -1;
nla_for_each_nested(key, keys, rem) {
memset(&parse, 0, sizeof(parse));
parse.idx = -1;
err = nl80211_parse_key_new(key, &parse);
if (err)
goto error;
err = -EINVAL;
if (!parse.p.key)
goto error;
if (parse.idx < 0 || parse.idx > 4)
goto error;
if (parse.def) {
if (def)
goto error;
def = 1;
result->def = parse.idx;
if (!parse.def_uni || !parse.def_multi)
goto error;
} else if (parse.defmgmt)
goto error;
err = cfg80211_validate_key_settings(rdev, &parse.p,
parse.idx, false, NULL);
if (err)
goto error;
result->params[parse.idx].cipher = parse.p.cipher;
result->params[parse.idx].key_len = parse.p.key_len;
result->params[parse.idx].key = result->data[parse.idx];
memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
if (no_ht)
*no_ht = true;
}
}
return result;
error:
kfree(result);
return ERR_PTR(err);
}
static int nl80211_key_allowed(struct wireless_dev *wdev)
{
ASSERT_WDEV_LOCK(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_MESH_POINT:
break;
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (!wdev->current_bss)
return -ENOLINK;
break;
case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_OCB:
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_P2P_DEVICE:
case NL80211_IFTYPE_WDS:
case NUM_NL80211_IFTYPES:
return -EINVAL;
}
return 0;
}
static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
struct nlattr *tb)
{
struct ieee80211_channel *chan;
if (tb == NULL)
return NULL;
chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
return NULL;
return chan;
}
static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
{
struct nlattr *nl_modes = nla_nest_start(msg, attr);
int i;
if (!nl_modes)
goto nla_put_failure;
i = 0;
while (ifmodes) {
if ((ifmodes & 1) && nla_put_flag(msg, i))
goto nla_put_failure;
ifmodes >>= 1;
i++;
}
nla_nest_end(msg, nl_modes);
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_put_iface_combinations(struct wiphy *wiphy,
struct sk_buff *msg,
bool large)
{
struct nlattr *nl_combis;
int i, j;
nl_combis = nla_nest_start(msg,
NL80211_ATTR_INTERFACE_COMBINATIONS);
if (!nl_combis)
goto nla_put_failure;
for (i = 0; i < wiphy->n_iface_combinations; i++) {
const struct ieee80211_iface_combination *c;
struct nlattr *nl_combi, *nl_limits;
c = &wiphy->iface_combinations[i];
nl_combi = nla_nest_start(msg, i + 1);
if (!nl_combi)
goto nla_put_failure;
nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
if (!nl_limits)
goto nla_put_failure;
for (j = 0; j < c->n_limits; j++) {
struct nlattr *nl_limit;
nl_limit = nla_nest_start(msg, j + 1);
if (!nl_limit)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
c->limits[j].max))
goto nla_put_failure;
if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
c->limits[j].types))
goto nla_put_failure;
nla_nest_end(msg, nl_limit);
}
nla_nest_end(msg, nl_limits);
if (c->beacon_int_infra_match &&
nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
c->num_different_channels) ||
nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
c->max_interfaces))
goto nla_put_failure;
if (large &&
(nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
c->radar_detect_widths) ||
nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
c->radar_detect_regions)))
goto nla_put_failure;
nla_nest_end(msg, nl_combi);
}
nla_nest_end(msg, nl_combis);
return 0;
nla_put_failure:
return -ENOBUFS;
}
#ifdef CONFIG_PM
static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->data_payload_max))
return -ENOBUFS;
if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
return -ENOBUFS;
if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(*tcp->tok), tcp->tok))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval_max))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_payload_max))
return -ENOBUFS;
nla_nest_end(msg, nl_tcp);
return 0;
}
static int nl80211_send_wowlan(struct sk_buff *msg,
struct cfg80211_registered_device *rdev,
bool large)
{
struct nlattr *nl_wowlan;
if (!rdev->wiphy.wowlan)
return 0;
nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
if (!nl_wowlan)
return -ENOBUFS;
if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
return -ENOBUFS;
if (rdev->wiphy.wowlan->n_patterns) {
struct nl80211_pattern_support pat = {
.max_patterns = rdev->wiphy.wowlan->n_patterns,
.min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
.max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
.max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
};
if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
sizeof(pat), &pat))
return -ENOBUFS;
}
if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
return -ENOBUFS;
/* TODO: send wowlan net detect */
nla_nest_end(msg, nl_wowlan);
return 0;
}
#endif
static int nl80211_send_coalesce(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct nl80211_coalesce_rule_support rule;
if (!rdev->wiphy.coalesce)
return 0;
rule.max_rules = rdev->wiphy.coalesce->n_rules;
rule.max_delay = rdev->wiphy.coalesce->max_delay;
rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
return -ENOBUFS;
return 0;
}
static int nl80211_send_band_rateinfo(struct sk_buff *msg,
struct ieee80211_supported_band *sband)
{
struct nlattr *nl_rates, *nl_rate;
struct ieee80211_rate *rate;
int i;
/* add HT info */
if (sband->ht_cap.ht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
sizeof(sband->ht_cap.mcs),
&sband->ht_cap.mcs) ||
nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
sband->ht_cap.cap) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
sband->ht_cap.ampdu_factor) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
sband->ht_cap.ampdu_density)))
return -ENOBUFS;
/* add VHT info */
if (sband->vht_cap.vht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
sizeof(sband->vht_cap.vht_mcs),
&sband->vht_cap.vht_mcs) ||
nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
sband->vht_cap.cap)))
return -ENOBUFS;
/* add bitrates */
nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
if (!nl_rates)
return -ENOBUFS;
for (i = 0; i < sband->n_bitrates; i++) {
nl_rate = nla_nest_start(msg, i);
if (!nl_rate)
return -ENOBUFS;
rate = &sband->bitrates[i];
if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
rate->bitrate))
return -ENOBUFS;
if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
nla_put_flag(msg,
NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
return -ENOBUFS;
nla_nest_end(msg, nl_rate);
}
nla_nest_end(msg, nl_rates);
return 0;
}
static int
nl80211_send_mgmt_stypes(struct sk_buff *msg,
const struct ieee80211_txrx_stypes *mgmt_stypes)
{
u16 stypes;
struct nlattr *nl_ftypes, *nl_ifs;
enum nl80211_iftype ift;
int i;
if (!mgmt_stypes)
return 0;
nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
if (!nl_ifs)
return -ENOBUFS;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start(msg, ift);
if (!nl_ftypes)
return -ENOBUFS;
i = 0;
stypes = mgmt_stypes[ift].tx;
while (stypes) {
if ((stypes & 1) &&
nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
(i << 4) | IEEE80211_FTYPE_MGMT))
return -ENOBUFS;
stypes >>= 1;
i++;
}
nla_nest_end(msg, nl_ftypes);
}
nla_nest_end(msg, nl_ifs);
nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
if (!nl_ifs)
return -ENOBUFS;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start(msg, ift);
if (!nl_ftypes)
return -ENOBUFS;
i = 0;
stypes = mgmt_stypes[ift].rx;
while (stypes) {
if ((stypes & 1) &&
nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
(i << 4) | IEEE80211_FTYPE_MGMT))
return -ENOBUFS;
stypes >>= 1;
i++;
}
nla_nest_end(msg, nl_ftypes);
}
nla_nest_end(msg, nl_ifs);
return 0;
}
struct nl80211_dump_wiphy_state {
s64 filter_wiphy;
long start;
long split_start, band_start, chan_start;
bool split;
};
static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd,
struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct nl80211_dump_wiphy_state *state)
{
void *hdr;
struct nlattr *nl_bands, *nl_band;
struct nlattr *nl_freqs, *nl_freq;
struct nlattr *nl_cmds;
enum ieee80211_band band;
struct ieee80211_channel *chan;
int i;
const struct ieee80211_txrx_stypes *mgmt_stypes =
rdev->wiphy.mgmt_stypes;
u32 features;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -ENOBUFS;
if (WARN_ON(!state))
return -EINVAL;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
wiphy_name(&rdev->wiphy)) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION,
cfg80211_rdev_list_generation))
goto nla_put_failure;
if (cmd != NL80211_CMD_NEW_WIPHY)
goto finish;
switch (state->split_start) {
case 0:
if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
rdev->wiphy.retry_short) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
rdev->wiphy.retry_long) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
rdev->wiphy.frag_threshold) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
rdev->wiphy.rts_threshold) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
rdev->wiphy.coverage_class) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
rdev->wiphy.max_scan_ssids) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
rdev->wiphy.max_sched_scan_ssids) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
rdev->wiphy.max_scan_ie_len) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
rdev->wiphy.max_sched_scan_ie_len) ||
nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
rdev->wiphy.max_match_sets))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
case 1:
if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
sizeof(u32) * rdev->wiphy.n_cipher_suites,
rdev->wiphy.cipher_suites))
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
rdev->wiphy.max_num_pmkids))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
rdev->wiphy.available_antennas_tx) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
rdev->wiphy.available_antennas_rx))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
rdev->wiphy.probe_resp_offload))
goto nla_put_failure;
if ((rdev->wiphy.available_antennas_tx ||
rdev->wiphy.available_antennas_rx) &&
rdev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;
int res;
res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
if (!res) {
if (nla_put_u32(msg,
NL80211_ATTR_WIPHY_ANTENNA_TX,
tx_ant) ||
nla_put_u32(msg,
NL80211_ATTR_WIPHY_ANTENNA_RX,
rx_ant))
goto nla_put_failure;
}
}
state->split_start++;
if (state->split)
break;
case 2:
if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
rdev->wiphy.interface_modes))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
case 3:
nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
if (!nl_bands)
goto nla_put_failure;
for (band = state->band_start;
band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = rdev->wiphy.bands[band];
if (!sband)
continue;
nl_band = nla_nest_start(msg, band);
if (!nl_band)
goto nla_put_failure;
switch (state->chan_start) {
case 0:
if (nl80211_send_band_rateinfo(msg, sband))
goto nla_put_failure;
state->chan_start++;
if (state->split)
break;
default:
/* add frequencies */
nl_freqs = nla_nest_start(
msg, NL80211_BAND_ATTR_FREQS);
if (!nl_freqs)
goto nla_put_failure;
for (i = state->chan_start - 1;
i < sband->n_channels;
i++) {
nl_freq = nla_nest_start(msg, i);
if (!nl_freq)
goto nla_put_failure;
chan = &sband->channels[i];
if (nl80211_msg_put_channel(
msg, chan,
state->split))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
if (state->split)
break;
}
if (i < sband->n_channels)
state->chan_start = i + 2;
else
state->chan_start = 0;
nla_nest_end(msg, nl_freqs);
}
nla_nest_end(msg, nl_band);
if (state->split) {
/* start again here */
if (state->chan_start)
band--;
break;
}
}
nla_nest_end(msg, nl_bands);
if (band < IEEE80211_NUM_BANDS)
state->band_start = band + 1;
else
state->band_start = 0;
/* if bands & channels are done, continue outside */
if (state->band_start == 0 && state->chan_start == 0)
state->split_start++;
if (state->split)
break;
case 4:
nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
if (!nl_cmds)
goto nla_put_failure;
i = 0;
#define CMD(op, n) \
do { \
if (rdev->ops->op) { \
i++; \
if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
goto nla_put_failure; \
} \
} while (0)
CMD(add_virtual_intf, NEW_INTERFACE);
CMD(change_virtual_intf, SET_INTERFACE);
CMD(add_key, NEW_KEY);
CMD(start_ap, START_AP);
CMD(add_station, NEW_STATION);
CMD(add_mpath, NEW_MPATH);
CMD(update_mesh_config, SET_MESH_CONFIG);
CMD(change_bss, SET_BSS);
CMD(auth, AUTHENTICATE);
CMD(assoc, ASSOCIATE);
CMD(deauth, DEAUTHENTICATE);
CMD(disassoc, DISASSOCIATE);
CMD(join_ibss, JOIN_IBSS);
CMD(join_mesh, JOIN_MESH);
CMD(set_pmksa, SET_PMKSA);
CMD(del_pmksa, DEL_PMKSA);
CMD(flush_pmksa, FLUSH_PMKSA);
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
CMD(remain_on_channel, REMAIN_ON_CHANNEL);
CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
CMD(mgmt_tx, FRAME);
CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
goto nla_put_failure;
}
if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
rdev->ops->join_mesh) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
goto nla_put_failure;
}
CMD(set_wds_peer, SET_WDS_PEER);
if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
CMD(tdls_mgmt, TDLS_MGMT);
CMD(tdls_oper, TDLS_OPER);
}
if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
CMD(sched_scan_start, START_SCHED_SCAN);
CMD(probe_client, PROBE_CLIENT);
CMD(set_noack_map, SET_NOACK_MAP);
if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
goto nla_put_failure;
}
CMD(start_p2p_device, START_P2P_DEVICE);
CMD(set_mcast_rate, SET_MCAST_RATE);
#ifdef CONFIG_NL80211_TESTMODE
CMD(testmode_cmd, TESTMODE);
#endif
if (state->split) {
CMD(crit_proto_start, CRIT_PROTOCOL_START);
CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
CMD(channel_switch, CHANNEL_SWITCH);
CMD(set_qos_map, SET_QOS_MAP);
if (rdev->wiphy.features &
NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
CMD(add_tx_ts, ADD_TX_TS);
}
/* add into the if now */
#undef CMD
if (rdev->ops->connect || rdev->ops->auth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
goto nla_put_failure;
}
if (rdev->ops->disconnect || rdev->ops->deauth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
goto nla_put_failure;
}
nla_nest_end(msg, nl_cmds);
state->split_start++;
if (state->split)
break;
case 5:
if (rdev->ops->remain_on_channel &&
(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
nla_put_u32(msg,
NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
rdev->wiphy.max_remain_on_channel_duration))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
goto nla_put_failure;
if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
case 6:
#ifdef CONFIG_PM
if (nl80211_send_wowlan(msg, rdev, state->split))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
#else
state->split_start++;
#endif
case 7:
if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
rdev->wiphy.software_iftypes))
goto nla_put_failure;
if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
state->split))
goto nla_put_failure;
state->split_start++;
if (state->split)
break;
case 8:
if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
rdev->wiphy.ap_sme_capa))
goto nla_put_failure;
features = rdev->wiphy.features;
/*
* We can only add the per-channel limit information if the
* dump is split, otherwise it makes it too big. Therefore
* only advertise it in that case.
*/
if (state->split)
features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
goto nla_put_failure;
if (rdev->wiphy.ht_capa_mod_mask &&
nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
sizeof(*rdev->wiphy.ht_capa_mod_mask),
rdev->wiphy.ht_capa_mod_mask))
goto nla_put_failure;
if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
rdev->wiphy.max_acl_mac_addrs &&
nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
rdev->wiphy.max_acl_mac_addrs))
goto nla_put_failure;
/*
* Any information below this point is only available to
* applications that can deal with it being split. This
* helps ensure that newly added capabilities don't break
* older tools by overrunning their buffers.
*
* We still increment split_start so that in the split
* case we'll continue with more data in the next round,
* but break unconditionally so unsplit data stops here.
*/
state->split_start++;
break;
case 9:
if (rdev->wiphy.extended_capabilities &&
(nla_put(msg, NL80211_ATTR_EXT_CAPA,
rdev->wiphy.extended_capabilities_len,
rdev->wiphy.extended_capabilities) ||
nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
rdev->wiphy.extended_capabilities_len,
rdev->wiphy.extended_capabilities_mask)))
goto nla_put_failure;
if (rdev->wiphy.vht_capa_mod_mask &&
nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
sizeof(*rdev->wiphy.vht_capa_mod_mask),
rdev->wiphy.vht_capa_mod_mask))
goto nla_put_failure;
state->split_start++;
break;
case 10:
if (nl80211_send_coalesce(msg, rdev))
goto nla_put_failure;
if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
(nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
goto nla_put_failure;
if (rdev->wiphy.max_ap_assoc_sta &&
nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
rdev->wiphy.max_ap_assoc_sta))
goto nla_put_failure;
state->split_start++;
break;
case 11:
if (rdev->wiphy.n_vendor_commands) {
const struct nl80211_vendor_cmd_info *info;
struct nlattr *nested;
nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
if (!nested)
goto nla_put_failure;
for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
info = &rdev->wiphy.vendor_commands[i].info;
if (nla_put(msg, i + 1, sizeof(*info), info))
goto nla_put_failure;
}
nla_nest_end(msg, nested);
}
if (rdev->wiphy.n_vendor_events) {
const struct nl80211_vendor_cmd_info *info;
struct nlattr *nested;
nested = nla_nest_start(msg,
NL80211_ATTR_VENDOR_EVENTS);
if (!nested)
goto nla_put_failure;
for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
info = &rdev->wiphy.vendor_events[i];
if (nla_put(msg, i + 1, sizeof(*info), info))
goto nla_put_failure;
}
nla_nest_end(msg, nested);
}
state->split_start++;
break;
case 12:
if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
rdev->wiphy.max_num_csa_counters))
goto nla_put_failure;
/* done */
state->split_start = 0;
break;
}
finish:
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
struct netlink_callback *cb,
struct nl80211_dump_wiphy_state *state)
{
struct nlattr **tb = nl80211_fam.attrbuf;
int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
tb, nl80211_fam.maxattr, nl80211_policy);
/* ignore parse errors for backward compatibility */
if (ret)
return 0;
state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
if (tb[NL80211_ATTR_WIPHY])
state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
if (tb[NL80211_ATTR_WDEV])
state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
if (tb[NL80211_ATTR_IFINDEX]) {
struct net_device *netdev;
struct cfg80211_registered_device *rdev;
int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
if (!netdev)
return -ENODEV;
if (netdev->ieee80211_ptr) {
rdev = wiphy_to_rdev(
netdev->ieee80211_ptr->wiphy);
state->filter_wiphy = rdev->wiphy_idx;
}
}
return 0;
}
static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx = 0, ret;
struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
struct cfg80211_registered_device *rdev;
rtnl_lock();
if (!state) {
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state) {
rtnl_unlock();
return -ENOMEM;
}
state->filter_wiphy = -1;
ret = nl80211_dump_wiphy_parse(skb, cb, state);
if (ret) {
kfree(state);
rtnl_unlock();
return ret;
}
cb->args[0] = (long)state;
}
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
continue;
if (++idx <= state->start)
continue;
if (state->filter_wiphy != -1 &&
state->filter_wiphy != rdev->wiphy_idx)
continue;
/* attempt to fit multiple wiphy data chunks into the skb */
do {
ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NLM_F_MULTI, state);
if (ret < 0) {
/*
* If sending the wiphy data didn't fit (ENOBUFS
* or EMSGSIZE returned), this SKB is still
* empty (so it's not too big because another
* wiphy dataset is already in the skb) and
* we've not tried to adjust the dump allocation
* yet ... then adjust the alloc size to be
* bigger, and return 1 but with the empty skb.
* This results in an empty message being RX'ed
* in userspace, but that is ignored.
*
* We can then retry with the larger buffer.
*/
if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
!skb->len && !state->split &&
cb->min_dump_alloc < 4096) {
cb->min_dump_alloc = 4096;
state->split_start = 0;
rtnl_unlock();
return 1;
}
idx--;
break;
}
} while (state->split_start > 0);
break;
}
rtnl_unlock();
state->start = idx;
return skb->len;
}
static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
{
kfree((void *)cb->args[0]);
return 0;
}
static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nl80211_dump_wiphy_state state = {};
msg = nlmsg_new(4096, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
info->snd_portid, info->snd_seq, 0,
&state) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
[NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
[NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
[NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
};
static int parse_txq_params(struct nlattr *tb[],
struct ieee80211_txq_params *txq_params)
{
if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
!tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
!tb[NL80211_TXQ_ATTR_AIFS])
return -EINVAL;
txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
if (txq_params->ac >= NL80211_NUM_ACS)
return -EINVAL;
return 0;
}
static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
{
/*
* You can only set the channel explicitly for WDS interfaces,
* all others have their channel managed via their respective
* "establish a connection" command (connect, join, ...)
*
* For AP/GO and mesh mode, the channel can be set with the
* channel userspace API, but is only stored and passed to the
* low-level driver when the AP starts or the mesh is joined.
* This is for backward compatibility, userspace can also give
* the channel in the start-ap or join-mesh commands instead.
*
* Monitors are special as they are normally slaved to
* whatever else is going on, so they have their own special
* operation to set the monitor channel if possible.
*/
return !wdev ||
wdev->iftype == NL80211_IFTYPE_AP ||
wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
wdev->iftype == NL80211_IFTYPE_MONITOR ||
wdev->iftype == NL80211_IFTYPE_P2P_GO;
}
static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_chan_def *chandef)
{
u32 control_freq;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
chandef->center_freq1 = control_freq;
chandef->center_freq2 = 0;
/* Primary channel not allowed */
if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
return -EINVAL;
if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
enum nl80211_channel_type chantype;
chantype = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
switch (chantype) {
case NL80211_CHAN_NO_HT:
case NL80211_CHAN_HT20:
case NL80211_CHAN_HT40PLUS:
case NL80211_CHAN_HT40MINUS:
cfg80211_chandef_create(chandef, chandef->chan,
chantype);
break;
default:
return -EINVAL;
}
} else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
chandef->width =
nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
chandef->center_freq1 =
nla_get_u32(
info->attrs[NL80211_ATTR_CENTER_FREQ1]);
if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
chandef->center_freq2 =
nla_get_u32(
info->attrs[NL80211_ATTR_CENTER_FREQ2]);
}
if (!cfg80211_chandef_valid(chandef))
return -EINVAL;
if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
IEEE80211_CHAN_DISABLED))
return -EINVAL;
if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
chandef->width == NL80211_CHAN_WIDTH_10) &&
!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
return -EINVAL;
return 0;
}
static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct genl_info *info)
{
struct cfg80211_chan_def chandef;
int result;
enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
struct wireless_dev *wdev = NULL;
if (dev)
wdev = dev->ieee80211_ptr;
if (!nl80211_can_set_dev_channel(wdev))
return -EOPNOTSUPP;
if (wdev)
iftype = wdev->iftype;
result = nl80211_parse_chandef(rdev, info, &chandef);
if (result)
return result;
switch (iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
result = -EINVAL;
break;
}
if (wdev->beacon_interval) {
if (!dev || !rdev->ops->set_ap_chanwidth ||
!(rdev->wiphy.features &
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
result = -EBUSY;
break;
}
/* Only allow dynamic channel width changes */
if (chandef.chan != wdev->preset_chandef.chan) {
result = -EBUSY;
break;
}
result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
if (result)
break;
}
wdev->preset_chandef = chandef;
result = 0;
break;
case NL80211_IFTYPE_MESH_POINT:
result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
break;
case NL80211_IFTYPE_MONITOR:
result = cfg80211_set_monitor_channel(rdev, &chandef);
break;
default:
result = -EINVAL;
}
return result;
}
static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *netdev = info->user_ptr[1];
return __nl80211_set_channel(rdev, netdev, info);
}
static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *bssid;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (netif_running(dev))
return -EBUSY;
if (!rdev->ops->set_wds_peer)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_WDS)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
return rdev_set_wds_peer(rdev, dev, bssid);
}
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev;
struct net_device *netdev = NULL;
struct wireless_dev *wdev;
int result = 0, rem_txq_params = 0;
struct nlattr *nl_txq_params;
u32 changed;
u8 retry_short = 0, retry_long = 0;
u32 frag_threshold = 0, rts_threshold = 0;
u8 coverage_class = 0;
ASSERT_RTNL();
/*
* Try to find the wiphy and netdev. Normally this
* function shouldn't need the netdev, but this is
* done for backward compatibility -- previously
* setting the channel was done per wiphy, but now
* it is per netdev. Previous userland like hostapd
* also passed a netdev to set_wiphy, so that it is
* possible to let that go to the right netdev!
*/
if (info->attrs[NL80211_ATTR_IFINDEX]) {
int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
netdev = __dev_get_by_index(genl_info_net(info), ifindex);
if (netdev && netdev->ieee80211_ptr)
rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
else
netdev = NULL;
}
if (!netdev) {
rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
info->attrs);
if (IS_ERR(rdev))
return PTR_ERR(rdev);
wdev = NULL;
netdev = NULL;
result = 0;
} else
wdev = netdev->ieee80211_ptr;
/*
* end workaround code, by now the rdev is available
* and locked, and wdev may or may not be NULL.
*/
if (info->attrs[NL80211_ATTR_WIPHY_NAME])
result = cfg80211_dev_rename(
rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
if (result)
return result;
if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
struct ieee80211_txq_params txq_params;
struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
if (!rdev->ops->set_txq_params)
return -EOPNOTSUPP;
if (!netdev)
return -EINVAL;
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
if (!netif_running(netdev))
return -ENETDOWN;
nla_for_each_nested(nl_txq_params,
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
rem_txq_params) {
result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
nla_data(nl_txq_params),
nla_len(nl_txq_params),
txq_params_policy);
if (result)
return result;
result = parse_txq_params(tb, &txq_params);
if (result)
return result;
result = rdev_set_txq_params(rdev, netdev,
&txq_params);
if (result)
return result;
}
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
result = __nl80211_set_channel(
rdev,
nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
info);
if (result)
return result;
}
if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
struct wireless_dev *txp_wdev = wdev;
enum nl80211_tx_power_setting type;
int idx, mbm = 0;
if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
txp_wdev = NULL;
if (!rdev->ops->set_tx_power)
return -EOPNOTSUPP;
idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
type = nla_get_u32(info->attrs[idx]);
if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
(type != NL80211_TX_POWER_AUTOMATIC))
return -EINVAL;
if (type != NL80211_TX_POWER_AUTOMATIC) {
idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
mbm = nla_get_u32(info->attrs[idx]);
}
result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
if (result)
return result;
}
if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
u32 tx_ant, rx_ant;
if ((!rdev->wiphy.available_antennas_tx &&
!rdev->wiphy.available_antennas_rx) ||
!rdev->ops->set_antenna)
return -EOPNOTSUPP;
tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
/* reject antenna configurations which don't match the
* available antenna masks, except for the "all" mask */
if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
(~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
return -EINVAL;
tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
result = rdev_set_antenna(rdev, tx_ant, rx_ant);
if (result)
return result;
}
changed = 0;
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
retry_short = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
if (retry_short == 0)
return -EINVAL;
changed |= WIPHY_PARAM_RETRY_SHORT;
}
if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
retry_long = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
if (retry_long == 0)
return -EINVAL;
changed |= WIPHY_PARAM_RETRY_LONG;
}
if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
frag_threshold = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
if (frag_threshold < 256)
return -EINVAL;
if (frag_threshold != (u32) -1) {
/*
* Fragments (apart from the last one) are required to
* have even length. Make the fragmentation code
* simpler by stripping LSB should someone try to use
* odd threshold value.
*/
frag_threshold &= ~0x1;
}
changed |= WIPHY_PARAM_FRAG_THRESHOLD;
}
if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
rts_threshold = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
changed |= WIPHY_PARAM_RTS_THRESHOLD;
}
if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
return -EINVAL;
coverage_class = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
changed |= WIPHY_PARAM_COVERAGE_CLASS;
}
if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
return -EOPNOTSUPP;
changed |= WIPHY_PARAM_DYN_ACK;
}
if (changed) {
u8 old_retry_short, old_retry_long;
u32 old_frag_threshold, old_rts_threshold;
u8 old_coverage_class;
if (!rdev->ops->set_wiphy_params)
return -EOPNOTSUPP;
old_retry_short = rdev->wiphy.retry_short;
old_retry_long = rdev->wiphy.retry_long;
old_frag_threshold = rdev->wiphy.frag_threshold;
old_rts_threshold = rdev->wiphy.rts_threshold;
old_coverage_class = rdev->wiphy.coverage_class;
if (changed & WIPHY_PARAM_RETRY_SHORT)
rdev->wiphy.retry_short = retry_short;
if (changed & WIPHY_PARAM_RETRY_LONG)
rdev->wiphy.retry_long = retry_long;
if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
rdev->wiphy.frag_threshold = frag_threshold;
if (changed & WIPHY_PARAM_RTS_THRESHOLD)
rdev->wiphy.rts_threshold = rts_threshold;
if (changed & WIPHY_PARAM_COVERAGE_CLASS)
rdev->wiphy.coverage_class = coverage_class;
result = rdev_set_wiphy_params(rdev, changed);
if (result) {
rdev->wiphy.retry_short = old_retry_short;
rdev->wiphy.retry_long = old_retry_long;
rdev->wiphy.frag_threshold = old_frag_threshold;
rdev->wiphy.rts_threshold = old_rts_threshold;
rdev->wiphy.coverage_class = old_coverage_class;
}
}
return 0;
}
static inline u64 wdev_id(struct wireless_dev *wdev)
{
return (u64)wdev->identifier |
((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
}
static int nl80211_send_chandef(struct sk_buff *msg,
const struct cfg80211_chan_def *chandef)
{
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
return -EINVAL;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
chandef->chan->center_freq))
return -ENOBUFS;
switch (chandef->width) {
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
cfg80211_get_chandef_type(chandef)))
return -ENOBUFS;
break;
default:
break;
}
if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
return -ENOBUFS;
if (chandef->center_freq2 &&
nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
return -ENOBUFS;
return 0;
}
static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, bool removal)
{
struct net_device *dev = wdev->netdev;
u8 cmd = NL80211_CMD_NEW_INTERFACE;
void *hdr;
if (removal)
cmd = NL80211_CMD_DEL_INTERFACE;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -1;
if (dev &&
(nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION,
rdev->devlist_generation ^
(cfg80211_rdev_list_generation << 2)))
goto nla_put_failure;
if (rdev->ops->get_channel) {
int ret;
struct cfg80211_chan_def chandef;
ret = rdev_get_channel(rdev, wdev, &chandef);
if (ret == 0) {
if (nl80211_send_chandef(msg, &chandef))
goto nla_put_failure;
}
}
if (wdev->ssid_len) {
if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
goto nla_put_failure;
}
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
{
int wp_idx = 0;
int if_idx = 0;
int wp_start = cb->args[0];
int if_start = cb->args[1];
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
rtnl_lock();
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
continue;
if (wp_idx < wp_start) {
wp_idx++;
continue;
}
if_idx = 0;
list_for_each_entry(wdev, &rdev->wdev_list, list) {
if (if_idx < if_start) {
if_idx++;
continue;
}
if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev, false) < 0) {
goto out;
}
if_idx++;
}
wp_idx++;
}
out:
rtnl_unlock();
cb->args[0] = wp_idx;
cb->args[1] = if_idx;
return skb->len;
}
static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
rdev, wdev, false) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
[NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
[NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
};
static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
{
struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
int flag;
*mntrflags = 0;
if (!nla)
return -EINVAL;
if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
nla, mntr_flags_policy))
return -EINVAL;
for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
if (flags[flag])
*mntrflags |= (1<<flag);
return 0;
}
static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u8 use_4addr,
enum nl80211_iftype iftype)
{
if (!use_4addr) {
if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
return -EBUSY;
return 0;
}
switch (iftype) {
case NL80211_IFTYPE_AP_VLAN:
if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
return 0;
break;
case NL80211_IFTYPE_STATION:
if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
return 0;
break;
default:
break;
}
return -EOPNOTSUPP;
}
static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
int err;
enum nl80211_iftype otype, ntype;
struct net_device *dev = info->user_ptr[1];
u32 _flags, *flags = NULL;
bool change = false;
memset(&params, 0, sizeof(params));
otype = ntype = dev->ieee80211_ptr->iftype;
if (info->attrs[NL80211_ATTR_IFTYPE]) {
ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (otype != ntype)
change = true;
if (ntype > NL80211_IFTYPE_MAX)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MESH_ID]) {
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (ntype != NL80211_IFTYPE_MESH_POINT)
return -EINVAL;
if (netif_running(dev))
return -EBUSY;
wdev_lock(wdev);
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
IEEE80211_MAX_MESH_ID_LEN);
wdev->mesh_id_up_len =
nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
wdev->mesh_id_up_len);
wdev_unlock(wdev);
}
if (info->attrs[NL80211_ATTR_4ADDR]) {
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
change = true;
err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
if (err)
return err;
} else {
params.use_4addr = -1;
}
if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
if (ntype != NL80211_IFTYPE_MONITOR)
return -EINVAL;
err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
&_flags);
if (err)
return err;
flags = &_flags;
change = true;
}
if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
!(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
return -EOPNOTSUPP;
if (change)
err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
else
err = 0;
if (!err && params.use_4addr != -1)
dev->ieee80211_ptr->use_4addr = params.use_4addr;
return err;
}
static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct vif_params params;
struct wireless_dev *wdev;
struct sk_buff *msg, *event;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
u32 flags;
/* to avoid failing a new interface creation due to pending removal */
cfg80211_destroy_ifaces(rdev);
memset(&params, 0, sizeof(params));
if (!info->attrs[NL80211_ATTR_IFNAME])
return -EINVAL;
if (info->attrs[NL80211_ATTR_IFTYPE]) {
type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
if (type > NL80211_IFTYPE_MAX)
return -EINVAL;
}
if (!rdev->ops->add_virtual_intf ||
!(rdev->wiphy.interface_modes & (1 << type)))
return -EOPNOTSUPP;
if ((type == NL80211_IFTYPE_P2P_DEVICE ||
rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
info->attrs[NL80211_ATTR_MAC]) {
nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
ETH_ALEN);
if (!is_valid_ether_addr(params.macaddr))
return -EADDRNOTAVAIL;
}
if (info->attrs[NL80211_ATTR_4ADDR]) {
params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
if (err)
return err;
}
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
&flags);
if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
!(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
return -EOPNOTSUPP;
wdev = rdev_add_virtual_intf(rdev,
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
type, err ? NULL : &flags, &params);
if (WARN_ON(!wdev)) {
nlmsg_free(msg);
return -EPROTO;
} else if (IS_ERR(wdev)) {
nlmsg_free(msg);
return PTR_ERR(wdev);
}
if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
wdev->owner_nlportid = info->snd_portid;
switch (type) {
case NL80211_IFTYPE_MESH_POINT:
if (!info->attrs[NL80211_ATTR_MESH_ID])
break;
wdev_lock(wdev);
BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
IEEE80211_MAX_MESH_ID_LEN);
wdev->mesh_id_up_len =
nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
wdev->mesh_id_up_len);
wdev_unlock(wdev);
break;
case NL80211_IFTYPE_P2P_DEVICE:
/*
* P2P Device doesn't have a netdev, so doesn't go
* through the netdev notifier and must be added here
*/
mutex_init(&wdev->mtx);
INIT_LIST_HEAD(&wdev->event_list);
spin_lock_init(&wdev->event_lock);
INIT_LIST_HEAD(&wdev->mgmt_registrations);
spin_lock_init(&wdev->mgmt_registrations_lock);
wdev->identifier = ++rdev->wdev_id;
list_add_rcu(&wdev->list, &rdev->wdev_list);
rdev->devlist_generation++;
break;
default:
break;
}
if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
rdev, wdev, false) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (event) {
if (nl80211_send_iface(event, 0, 0, 0,
rdev, wdev, false) < 0) {
nlmsg_free(event);
goto out;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
event, 0, NL80211_MCGRP_CONFIG,
GFP_KERNEL);
}
out:
return genlmsg_reply(msg, info);
}
static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct sk_buff *msg;
int status;
if (!rdev->ops->del_virtual_intf)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
nlmsg_free(msg);
msg = NULL;
}
/*
* If we remove a wireless device without a netdev then clear
* user_ptr[1] so that nl80211_post_doit won't dereference it
* to check if it needs to do dev_put(). Otherwise it crashes
* since the wdev has been freed, unlike with a netdev where
* we need the dev_put() for the netdev to really be freed.
*/
if (!wdev->netdev)
info->user_ptr[1] = NULL;
status = rdev_del_virtual_intf(rdev, wdev);
if (status >= 0 && msg)
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
msg, 0, NL80211_MCGRP_CONFIG,
GFP_KERNEL);
else
nlmsg_free(msg);
return status;
}
static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u16 noack_map;
if (!info->attrs[NL80211_ATTR_NOACK_MAP])
return -EINVAL;
if (!rdev->ops->set_noack_map)
return -EOPNOTSUPP;
noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
return rdev_set_noack_map(rdev, dev, noack_map);
}
struct get_key_cookie {
struct sk_buff *msg;
int error;
int idx;
};
static void get_key_callback(void *c, struct key_params *params)
{
struct nlattr *key;
struct get_key_cookie *cookie = c;
if ((params->key &&
nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
params->key_len, params->key)) ||
(params->seq &&
nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
params->seq_len, params->seq)) ||
(params->cipher &&
nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
params->cipher)))
goto nla_put_failure;
key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
if (!key)
goto nla_put_failure;
if ((params->key &&
nla_put(cookie->msg, NL80211_KEY_DATA,
params->key_len, params->key)) ||
(params->seq &&
nla_put(cookie->msg, NL80211_KEY_SEQ,
params->seq_len, params->seq)) ||
(params->cipher &&
nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
params->cipher)))
goto nla_put_failure;
if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
goto nla_put_failure;
nla_nest_end(cookie->msg, key);
return;
nla_put_failure:
cookie->error = 1;
}
static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
u8 key_idx = 0;
const u8 *mac_addr = NULL;
bool pairwise;
struct get_key_cookie cookie = {
.error = 0,
};
void *hdr;
struct sk_buff *msg;
if (info->attrs[NL80211_ATTR_KEY_IDX])
key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
if (key_idx > 5)
return -EINVAL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
pairwise = !!mac_addr;
if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
if (kt >= NUM_NL80211_KEYTYPES)
return -EINVAL;
if (kt != NL80211_KEYTYPE_GROUP &&
kt != NL80211_KEYTYPE_PAIRWISE)
return -EINVAL;
pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
}
if (!rdev->ops->get_key)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_NEW_KEY);
if (!hdr)
goto nla_put_failure;
cookie.msg = msg;
cookie.idx = key_idx;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
goto nla_put_failure;
if (mac_addr &&
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
goto nla_put_failure;
if (pairwise && mac_addr &&
!(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
return -ENOENT;
err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
get_key_callback);
if (err)
goto free_msg;
if (cookie.error)
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct key_parse key;
int err;
struct net_device *dev = info->user_ptr[1];
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (key.idx < 0)
return -EINVAL;
/* only support setting default key */
if (!key.def && !key.defmgmt)
return -EINVAL;
wdev_lock(dev->ieee80211_ptr);
if (key.def) {
if (!rdev->ops->set_default_key) {
err = -EOPNOTSUPP;
goto out;
}
err = nl80211_key_allowed(dev->ieee80211_ptr);
if (err)
goto out;
err = rdev_set_default_key(rdev, dev, key.idx,
key.def_uni, key.def_multi);
if (err)
goto out;
#ifdef CONFIG_CFG80211_WEXT
dev->ieee80211_ptr->wext.default_key = key.idx;
#endif
} else {
if (key.def_uni || !key.def_multi) {
err = -EINVAL;
goto out;
}
if (!rdev->ops->set_default_mgmt_key) {
err = -EOPNOTSUPP;
goto out;
}
err = nl80211_key_allowed(dev->ieee80211_ptr);
if (err)
goto out;
err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
if (err)
goto out;
#ifdef CONFIG_CFG80211_WEXT
dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
#endif
}
out:
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct key_parse key;
const u8 *mac_addr = NULL;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (!key.p.key)
return -EINVAL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (key.type == -1) {
if (mac_addr)
key.type = NL80211_KEYTYPE_PAIRWISE;
else
key.type = NL80211_KEYTYPE_GROUP;
}
/* for now */
if (key.type != NL80211_KEYTYPE_PAIRWISE &&
key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (!rdev->ops->add_key)
return -EOPNOTSUPP;
if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr))
return -EINVAL;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
if (!err)
err = rdev_add_key(rdev, dev, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr, &key.p);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
u8 *mac_addr = NULL;
struct key_parse key;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (key.type == -1) {
if (mac_addr)
key.type = NL80211_KEYTYPE_PAIRWISE;
else
key.type = NL80211_KEYTYPE_GROUP;
}
/* for now */
if (key.type != NL80211_KEYTYPE_PAIRWISE &&
key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (!rdev->ops->del_key)
return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
err = nl80211_key_allowed(dev->ieee80211_ptr);
if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
!(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
err = -ENOENT;
if (!err)
err = rdev_del_key(rdev, dev, key.idx,
key.type == NL80211_KEYTYPE_PAIRWISE,
mac_addr);
#ifdef CONFIG_CFG80211_WEXT
if (!err) {
if (key.idx == dev->ieee80211_ptr->wext.default_key)
dev->ieee80211_ptr->wext.default_key = -1;
else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
dev->ieee80211_ptr->wext.default_mgmt_key = -1;
}
#endif
wdev_unlock(dev->ieee80211_ptr);
return err;
}
/* This function returns an error or the number of nested attributes */
static int validate_acl_mac_addrs(struct nlattr *nl_attr)
{
struct nlattr *attr;
int n_entries = 0, tmp;
nla_for_each_nested(attr, nl_attr, tmp) {
if (nla_len(attr) != ETH_ALEN)
return -EINVAL;
n_entries++;
}
return n_entries;
}
/*
* This function parses ACL information and allocates memory for ACL data.
* On successful return, the calling function is responsible to free the
* ACL buffer returned by this function.
*/
static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
struct genl_info *info)
{
enum nl80211_acl_policy acl_policy;
struct nlattr *attr;
struct cfg80211_acl_data *acl;
int i = 0, n_entries, tmp;
if (!wiphy->max_acl_mac_addrs)
return ERR_PTR(-EOPNOTSUPP);
if (!info->attrs[NL80211_ATTR_ACL_POLICY])
return ERR_PTR(-EINVAL);
acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
return ERR_PTR(-EINVAL);
if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
return ERR_PTR(-EINVAL);
n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
if (n_entries < 0)
return ERR_PTR(n_entries);
if (n_entries > wiphy->max_acl_mac_addrs)
return ERR_PTR(-ENOTSUPP);
acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
GFP_KERNEL);
if (!acl)
return ERR_PTR(-ENOMEM);
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
i++;
}
acl->n_acl_entries = n_entries;
acl->acl_policy = acl_policy;
return acl;
}
static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_acl_data *acl;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!dev->ieee80211_ptr->beacon_interval)
return -EINVAL;
acl = parse_acl_data(&rdev->wiphy, info);
if (IS_ERR(acl))
return PTR_ERR(acl);
err = rdev_set_mac_acl(rdev, dev, acl);
kfree(acl);
return err;
}
static int nl80211_parse_beacon(struct nlattr *attrs[],
struct cfg80211_beacon_data *bcn)
{
bool haveinfo = false;
if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
!is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
!is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
!is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
return -EINVAL;
memset(bcn, 0, sizeof(*bcn));
if (attrs[NL80211_ATTR_BEACON_HEAD]) {
bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
if (!bcn->head_len)
return -EINVAL;
haveinfo = true;
}
if (attrs[NL80211_ATTR_BEACON_TAIL]) {
bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
haveinfo = true;
}
if (!haveinfo)
return -EINVAL;
if (attrs[NL80211_ATTR_IE]) {
bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
}
if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
bcn->proberesp_ies =
nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
bcn->proberesp_ies_len =
nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
}
if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
bcn->assocresp_ies =
nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
bcn->assocresp_ies_len =
nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
}
if (attrs[NL80211_ATTR_PROBE_RESP]) {
bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
}
return 0;
}
static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
struct cfg80211_ap_settings *params)
{
struct wireless_dev *wdev;
bool ret = false;
list_for_each_entry(wdev, &rdev->wdev_list, list) {
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
continue;
if (!wdev->preset_chandef.chan)
continue;
params->chandef = wdev->preset_chandef;
ret = true;
break;
}
return ret;
}
static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
enum nl80211_auth_type auth_type,
enum nl80211_commands cmd)
{
if (auth_type > NL80211_AUTHTYPE_MAX)
return false;
switch (cmd) {
case NL80211_CMD_AUTHENTICATE:
if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
auth_type == NL80211_AUTHTYPE_SAE)
return false;
return true;
case NL80211_CMD_CONNECT:
case NL80211_CMD_START_AP:
/* SAE not supported yet */
if (auth_type == NL80211_AUTHTYPE_SAE)
return false;
return true;
default:
return false;
}
}
static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_ap_settings params;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!rdev->ops->start_ap)
return -EOPNOTSUPP;
if (wdev->beacon_interval)
return -EALREADY;
memset(&params, 0, sizeof(params));
/* these are required for START_AP */
if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
!info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
!info->attrs[NL80211_ATTR_BEACON_HEAD])
return -EINVAL;
err = nl80211_parse_beacon(info->attrs, &params.beacon);
if (err)
return err;
params.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
params.dtim_period =
nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
if (err)
return err;
/*
* In theory, some of these attributes should be required here
* but since they were not used when the command was originally
* added, keep them optional for old user space programs to let
* them continue to work with drivers that do not need the
* additional information -- drivers must check!
*/
if (info->attrs[NL80211_ATTR_SSID]) {
params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
params.ssid_len =
nla_len(info->attrs[NL80211_ATTR_SSID]);
if (params.ssid_len == 0 ||
params.ssid_len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
params.hidden_ssid = nla_get_u32(
info->attrs[NL80211_ATTR_HIDDEN_SSID]);
if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
return -EINVAL;
}
params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
params.auth_type = nla_get_u32(
info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, params.auth_type,
NL80211_CMD_START_AP))
return -EINVAL;
} else
params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
err = nl80211_crypto_settings(rdev, info, &params.crypto,
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;
if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
return -EOPNOTSUPP;
params.inactivity_timeout = nla_get_u16(
info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
}
if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
params.p2p_ctwindow =
nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
if (params.p2p_ctwindow > 127)
return -EINVAL;
if (params.p2p_ctwindow != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
u8 tmp;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
if (tmp > 1)
return -EINVAL;
params.p2p_opp_ps = tmp;
if (params.p2p_opp_ps != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &params.chandef);
if (err)
return err;
} else if (wdev->preset_chandef.chan) {
params.chandef = wdev->preset_chandef;
} else if (!nl80211_get_ap_channel(rdev, &params))
return -EINVAL;
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
wdev->iftype))
return -EINVAL;
if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
params.acl = parse_acl_data(&rdev->wiphy, info);
if (IS_ERR(params.acl))
return PTR_ERR(params.acl);
}
if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
params.smps_mode =
nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
switch (params.smps_mode) {
case NL80211_SMPS_OFF:
break;
case NL80211_SMPS_STATIC:
if (!(rdev->wiphy.features &
NL80211_FEATURE_STATIC_SMPS))
return -EINVAL;
break;
case NL80211_SMPS_DYNAMIC:
if (!(rdev->wiphy.features &
NL80211_FEATURE_DYNAMIC_SMPS))
return -EINVAL;
break;
default:
return -EINVAL;
}
} else {
params.smps_mode = NL80211_SMPS_OFF;
}
wdev_lock(wdev);
err = rdev_start_ap(rdev, dev, &params);
if (!err) {
wdev->preset_chandef = params.chandef;
wdev->beacon_interval = params.beacon_interval;
wdev->chandef = params.chandef;
wdev->ssid_len = params.ssid_len;
memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
}
wdev_unlock(wdev);
kfree(params.acl);
return err;
}
static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_beacon_data params;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!rdev->ops->change_beacon)
return -EOPNOTSUPP;
if (!wdev->beacon_interval)
return -EINVAL;
err = nl80211_parse_beacon(info->attrs, &params);
if (err)
return err;
wdev_lock(wdev);
err = rdev_change_beacon(rdev, dev, &params);
wdev_unlock(wdev);
return err;
}
static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
return cfg80211_stop_ap(rdev, dev, false);
}
static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
[NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
[NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
};
static int parse_station_flags(struct genl_info *info,
enum nl80211_iftype iftype,
struct station_parameters *params)
{
struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
struct nlattr *nla;
int flag;
/*
* Try parsing the new attribute first so userspace
* can specify both for older kernels.
*/
nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
if (nla) {
struct nl80211_sta_flag_update *sta_flags;
sta_flags = nla_data(nla);
params->sta_flags_mask = sta_flags->mask;
params->sta_flags_set = sta_flags->set;
params->sta_flags_set &= params->sta_flags_mask;
if ((params->sta_flags_mask |
params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
return -EINVAL;
return 0;
}
/* if present, parse the old attribute */
nla = info->attrs[NL80211_ATTR_STA_FLAGS];
if (!nla)
return 0;
if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
nla, sta_flags_policy))
return -EINVAL;
/*
* Only allow certain flags for interface types so that
* other attributes are silently ignored. Remember that
* this is backward compatibility code with old userspace
* and shouldn't be hit in other cases anyway.
*/
switch (iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
BIT(NL80211_STA_FLAG_WME) |
BIT(NL80211_STA_FLAG_MFP);
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_TDLS_PEER);
break;
case NL80211_IFTYPE_MESH_POINT:
params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHORIZED);
default:
return -EINVAL;
}
for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
if (flags[flag]) {
params->sta_flags_set |= (1<<flag);
/* no longer support new API additions in old API */
if (flag > NL80211_STA_FLAG_MAX_OLD_API)
return -EINVAL;
}
}
return 0;
}
static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
int attr)
{
struct nlattr *rate;
u32 bitrate;
u16 bitrate_compat;
rate = nla_nest_start(msg, attr);
if (!rate)
return false;
/* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
bitrate = cfg80211_calculate_bitrate(info);
/* report 16-bit bitrate only if we can */
bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
if (bitrate > 0 &&
nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
return false;
if (bitrate_compat > 0 &&
nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
return false;
if (info->flags & RATE_INFO_FLAGS_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
return false;
if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
} else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
return false;
if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
return false;
if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
return false;
if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
return false;
if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
return false;
if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
return false;
if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
return false;
}
nla_nest_end(msg, rate);
return true;
}
static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
int id)
{
void *attr;
int i = 0;
if (!mask)
return true;
attr = nla_nest_start(msg, id);
if (!attr)
return false;
for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
if (!(mask & BIT(i)))
continue;
if (nla_put_u8(msg, i, signal[i]))
return false;
}
nla_nest_end(msg, attr);
return true;
}
static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
int flags,
struct cfg80211_registered_device *rdev,
struct net_device *dev,
const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
struct nlattr *sinfoattr, *bss_param;
hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
goto nla_put_failure;
sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
if (!sinfoattr)
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
sinfo->connected_time))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
sinfo->inactive_time))
goto nla_put_failure;
if ((sinfo->filled & (STATION_INFO_RX_BYTES |
STATION_INFO_RX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
(u32)sinfo->rx_bytes))
goto nla_put_failure;
if ((sinfo->filled & (STATION_INFO_TX_BYTES |
STATION_INFO_TX_BYTES64)) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
(u32)sinfo->tx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
sinfo->rx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
sinfo->tx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_LLID) &&
nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_PLID) &&
nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
sinfo->plink_state))
goto nla_put_failure;
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
if ((sinfo->filled & STATION_INFO_SIGNAL) &&
nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
sinfo->signal))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
sinfo->signal_avg))
goto nla_put_failure;
break;
default:
break;
}
if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
if (!nl80211_put_signal(msg, sinfo->chains,
sinfo->chain_signal,
NL80211_STA_INFO_CHAIN_SIGNAL))
goto nla_put_failure;
}
if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
if (!nl80211_put_signal(msg, sinfo->chains,
sinfo->chain_signal_avg,
NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
goto nla_put_failure;
}
if (sinfo->filled & STATION_INFO_TX_BITRATE) {
if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
NL80211_STA_INFO_TX_BITRATE))
goto nla_put_failure;
}
if (sinfo->filled & STATION_INFO_RX_BITRATE) {
if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
NL80211_STA_INFO_RX_BITRATE))
goto nla_put_failure;
}
if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
sinfo->rx_packets))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
sinfo->tx_packets))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
sinfo->tx_retries))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
sinfo->tx_failed))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
sinfo->expected_throughput))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
sinfo->beacon_loss_count))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
sinfo->local_pm))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_PEER_PM) &&
nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
sinfo->peer_pm))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
sinfo->nonpeer_pm))
goto nla_put_failure;
if (sinfo->filled & STATION_INFO_BSS_PARAM) {
bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
if (!bss_param)
goto nla_put_failure;
if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
sinfo->bss_param.dtim_period) ||
nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
sinfo->bss_param.beacon_interval))
goto nla_put_failure;
nla_nest_end(msg, bss_param);
}
if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
sizeof(struct nl80211_sta_flag_update),
&sinfo->sta_flags))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
sinfo->t_offset))
goto nla_put_failure;
nla_nest_end(msg, sinfoattr);
if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
sinfo->assoc_req_ies))
goto nla_put_failure;
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_station(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct station_info sinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 mac_addr[ETH_ALEN];
int sta_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
if (err)
return err;
if (!wdev->netdev) {
err = -EINVAL;
goto out_err;
}
if (!rdev->ops->dump_station) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
memset(&sinfo, 0, sizeof(sinfo));
err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
mac_addr, &sinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_station(skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev->netdev, mac_addr,
&sinfo) < 0)
goto out;
sta_idx++;
}
out:
cb->args[2] = sta_idx;
err = skb->len;
out_err:
nl80211_finish_wdev_dump(rdev);
return err;
}
static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_info sinfo;
struct sk_buff *msg;
u8 *mac_addr = NULL;
int err;
memset(&sinfo, 0, sizeof(sinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_station)
return -EOPNOTSUPP;
err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
rdev, dev, mac_addr, &sinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
int cfg80211_check_station_change(struct wiphy *wiphy,
struct station_parameters *params,
enum cfg80211_station_type statype)
{
if (params->listen_interval != -1)
return -EINVAL;
if (params->aid &&
!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
return -EINVAL;
/* When you run into this, adjust the code below for the new flag */
BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
switch (statype) {
case CFG80211_STA_MESH_PEER_KERNEL:
case CFG80211_STA_MESH_PEER_USER:
/*
* No ignoring the TDLS flag here -- the userspace mesh
* code doesn't have the bug of including TDLS in the
* mask everywhere.
*/
if (params->sta_flags_mask &
~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHORIZED)))
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_SETUP:
case CFG80211_STA_TDLS_PEER_ACTIVE:
if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
return -EINVAL;
/* ignore since it can't change */
params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
break;
default:
/* disallow mesh-specific things */
if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
return -EINVAL;
if (params->local_pm)
return -EINVAL;
if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
}
if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
/* TDLS can't be set, ... */
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
return -EINVAL;
/*
* ... but don't bother the driver with it. This works around
* a hostapd/wpa_supplicant issue -- it always includes the
* TLDS_PEER flag in the mask even for AP mode.
*/
params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
}
if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
/* reject other things that can't change */
if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
return -EINVAL;
if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
return -EINVAL;
if (params->supported_rates)
return -EINVAL;
if (params->ext_capab || params->ht_capa || params->vht_capa)
return -EINVAL;
}
if (statype != CFG80211_STA_AP_CLIENT) {
if (params->vlan)
return -EINVAL;
}
switch (statype) {
case CFG80211_STA_AP_MLME_CLIENT:
/* Use this only for authorizing/unauthorizing a station */
if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
return -EOPNOTSUPP;
break;
case CFG80211_STA_AP_CLIENT:
/* accept only the listed bits */
if (params->sta_flags_mask &
~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED) |
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
BIT(NL80211_STA_FLAG_WME) |
BIT(NL80211_STA_FLAG_MFP)))
return -EINVAL;
/* but authenticated/associated only if driver handles it */
if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
params->sta_flags_mask &
(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED)))
return -EINVAL;
break;
case CFG80211_STA_IBSS:
case CFG80211_STA_AP_STA:
/* reject any changes other than AUTHORIZED */
if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_SETUP:
/* reject any changes other than AUTHORIZED or WME */
if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_WME)))
return -EINVAL;
/* force (at least) rates when authorizing */
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
!params->supported_rates)
return -EINVAL;
break;
case CFG80211_STA_TDLS_PEER_ACTIVE:
/* reject any changes */
return -EINVAL;
case CFG80211_STA_MESH_PEER_KERNEL:
if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
return -EINVAL;
break;
case CFG80211_STA_MESH_PEER_USER:
if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
return -EINVAL;
break;
}
return 0;
}
EXPORT_SYMBOL(cfg80211_check_station_change);
/*
* Get vlan interface making sure it is running and on the right wiphy.
*/
static struct net_device *get_vlan(struct genl_info *info,
struct cfg80211_registered_device *rdev)
{
struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
struct net_device *v;
int ret;
if (!vlanattr)
return NULL;
v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
if (!v)
return ERR_PTR(-ENODEV);
if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
ret = -EINVAL;
goto error;
}
if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
ret = -EINVAL;
goto error;
}
if (!netif_running(v)) {
ret = -ENETDOWN;
goto error;
}
return v;
error:
dev_put(v);
return ERR_PTR(ret);
}
static const struct nla_policy
nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
[NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
[NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
};
static int nl80211_parse_sta_wme(struct genl_info *info,
struct station_parameters *params)
{
struct nlattr *tb[NL80211_STA_WME_MAX + 1];
struct nlattr *nla;
int err;
/* parse WME attributes if present */
if (!info->attrs[NL80211_ATTR_STA_WME])
return 0;
nla = info->attrs[NL80211_ATTR_STA_WME];
err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
nl80211_sta_wme_policy);
if (err)
return err;
if (tb[NL80211_STA_WME_UAPSD_QUEUES])
params->uapsd_queues = nla_get_u8(
tb[NL80211_STA_WME_UAPSD_QUEUES]);
if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
return -EINVAL;
if (tb[NL80211_STA_WME_MAX_SP])
params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
return -EINVAL;
params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
return 0;
}
static int nl80211_parse_sta_channel_info(struct genl_info *info,
struct station_parameters *params)
{
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
params->supported_channels =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
params->supported_channels_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
/*
* Need to include at least one (first channel, number of
* channels) tuple for each subband, and must have proper
* tuples for the rest of the data as well.
*/
if (params->supported_channels_len < 2)
return -EINVAL;
if (params->supported_channels_len % 2)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
params->supported_oper_classes =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
params->supported_oper_classes_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
/*
* The value of the Length field of the Supported Operating
* Classes element is between 2 and 253.
*/
if (params->supported_oper_classes_len < 2 ||
params->supported_oper_classes_len > 253)
return -EINVAL;
}
return 0;
}
static int nl80211_set_station_tdls(struct genl_info *info,
struct station_parameters *params)
{
int err;
/* Dummy STA entry gets updated once the peer capabilities are known */
if (info->attrs[NL80211_ATTR_PEER_AID])
params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params->ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
params->vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
err = nl80211_parse_sta_channel_info(info, params);
if (err)
return err;
return nl80211_parse_sta_wme(info, params);
}
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr;
int err;
memset(&params, 0, sizeof(params));
params.listen_interval = -1;
if (!rdev->ops->change_station)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_STA_AID])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
params.supported_rates =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.supported_rates_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
}
if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
params.capability =
nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
}
if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
params.ext_capab =
nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
params.ext_capab_len =
nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
}
if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
return -EINVAL;
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
params.plink_state =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
if (params.plink_state >= NUM_NL80211_PLINK_STATES)
return -EINVAL;
params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
}
if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
enum nl80211_mesh_power_mode pm = nla_get_u32(
info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
if (pm <= NL80211_MESH_POWER_UNKNOWN ||
pm > NL80211_MESH_POWER_MAX)
return -EINVAL;
params.local_pm = pm;
}
/* Include parameters for TDLS peer (will check later) */
err = nl80211_set_station_tdls(info, &params);
if (err)
return err;
params.vlan = get_vlan(info, rdev);
if (IS_ERR(params.vlan))
return PTR_ERR(params.vlan);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
break;
default:
err = -EOPNOTSUPP;
goto out_put_vlan;
}
/* driver will call cfg80211_check_station_change() */
err = rdev_change_station(rdev, dev, mac_addr, &params);
out_put_vlan:
if (params.vlan)
dev_put(params.vlan);
return err;
}
static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct station_parameters params;
u8 *mac_addr = NULL;
memset(&params, 0, sizeof(params));
if (!rdev->ops->add_station)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_STA_AID] &&
!info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
params.supported_rates =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.supported_rates_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
if (info->attrs[NL80211_ATTR_PEER_AID])
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
else
params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
if (!params.aid || params.aid > IEEE80211_MAX_AID)
return -EINVAL;
if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
params.capability =
nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
}
if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
params.ext_capab =
nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
params.ext_capab_len =
nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
}
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params.ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
params.vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
params.opmode_notif_used = true;
params.opmode_notif =
nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
}
if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
return -EINVAL;
}
err = nl80211_parse_sta_channel_info(info, &params);
if (err)
return err;
err = nl80211_parse_sta_wme(info, &params);
if (err)
return err;
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
/* When you run into this, adjust the code below for the new flag */
BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
/* ignore WME attributes if iface/sta is not capable */
if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* TDLS peers cannot be added */
if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
/* but don't bother the driver with it */
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
/* allow authenticated/associated only if driver handles it */
if (!(rdev->wiphy.features &
NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
params.sta_flags_mask &
(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_ASSOCIATED)))
return -EINVAL;
/* must be last in here for error handling */
params.vlan = get_vlan(info, rdev);
if (IS_ERR(params.vlan))
return PTR_ERR(params.vlan);
break;
case NL80211_IFTYPE_MESH_POINT:
/* ignore uAPSD data */
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* associated is disallowed */
if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
return -EINVAL;
/* TDLS peers cannot be added */
if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
info->attrs[NL80211_ATTR_PEER_AID])
return -EINVAL;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
/* ignore uAPSD data */
params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
/* these are disallowed */
if (params.sta_flags_mask &
(BIT(NL80211_STA_FLAG_ASSOCIATED) |
BIT(NL80211_STA_FLAG_AUTHENTICATED)))
return -EINVAL;
/* Only TDLS peers can be added */
if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
return -EINVAL;
/* Can only add if TDLS ... */
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
return -EOPNOTSUPP;
/* ... with external setup is supported */
if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
return -EOPNOTSUPP;
/*
* Older wpa_supplicant versions always mark the TDLS peer
* as authorized, but it shouldn't yet be.
*/
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
break;
default:
return -EOPNOTSUPP;
}
/* be aware of params.vlan when changing code here */
err = rdev_add_station(rdev, dev, mac_addr, &params);
if (params.vlan)
dev_put(params.vlan);
return err;
}
static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct station_del_parameters params;
memset(&params, 0, sizeof(params));
if (info->attrs[NL80211_ATTR_MAC])
params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
if (!rdev->ops->del_station)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
params.subtype =
nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
return -EINVAL;
} else {
/* Default to Deauthentication frame */
params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
}
if (info->attrs[NL80211_ATTR_REASON_CODE]) {
params.reason_code =
nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (params.reason_code == 0)
return -EINVAL; /* 0 is reserved */
} else {
/* Default to reason code 2 */
params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
}
return rdev_del_station(rdev, dev, &params);
}
static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct net_device *dev,
u8 *dst, u8 *next_hop,
struct mpath_info *pinfo)
{
void *hdr;
struct nlattr *pinfoattr;
hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
goto nla_put_failure;
pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
if (!pinfoattr)
goto nla_put_failure;
if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
pinfo->frame_qlen))
goto nla_put_failure;
if (((pinfo->filled & MPATH_INFO_SN) &&
nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
((pinfo->filled & MPATH_INFO_METRIC) &&
nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
pinfo->metric)) ||
((pinfo->filled & MPATH_INFO_EXPTIME) &&
nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
pinfo->exptime)) ||
((pinfo->filled & MPATH_INFO_FLAGS) &&
nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
pinfo->flags)) ||
((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
pinfo->discovery_timeout)) ||
((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
pinfo->discovery_retries)))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_mpath(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct mpath_info pinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 dst[ETH_ALEN];
u8 next_hop[ETH_ALEN];
int path_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
if (err)
return err;
if (!rdev->ops->dump_mpath) {
err = -EOPNOTSUPP;
goto out_err;
}
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
next_hop, &pinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, dst, next_hop,
&pinfo) < 0)
goto out;
path_idx++;
}
out:
cb->args[2] = path_idx;
err = skb->len;
out_err:
nl80211_finish_wdev_dump(rdev);
return err;
}
static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
u8 next_hop[ETH_ALEN];
memset(&pinfo, 0, sizeof(pinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
dev, dst, next_hop, &pinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
if (!rdev->ops->change_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
return rdev_change_mpath(rdev, dev, dst, next_hop);
}
static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
u8 *next_hop = NULL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
if (!rdev->ops->add_mpath)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
return rdev_add_mpath(rdev, dev, dst, next_hop);
}
static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 *dst = NULL;
if (info->attrs[NL80211_ATTR_MAC])
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->del_mpath)
return -EOPNOTSUPP;
return rdev_del_mpath(rdev, dev, dst);
}
static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
struct net_device *dev = info->user_ptr[1];
struct mpath_info pinfo;
struct sk_buff *msg;
u8 *dst = NULL;
u8 mpp[ETH_ALEN];
memset(&pinfo, 0, sizeof(pinfo));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!rdev->ops->get_mpp)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
dev, dst, mpp, &pinfo) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
return genlmsg_reply(msg, info);
}
static int nl80211_dump_mpp(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct mpath_info pinfo;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
u8 dst[ETH_ALEN];
u8 mpp[ETH_ALEN];
int path_idx = cb->args[2];
int err;
err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
if (err)
return err;
if (!rdev->ops->dump_mpp) {
err = -EOPNOTSUPP;
goto out_err;
}
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
mpp, &pinfo);
if (err == -ENOENT)
break;
if (err)
goto out_err;
if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, dst, mpp,
&pinfo) < 0)
goto out;
path_idx++;
}
out:
cb->args[2] = path_idx;
err = skb->len;
out_err:
nl80211_finish_wdev_dump(rdev);
return err;
}
static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct bss_parameters params;
int err;
memset(&params, 0, sizeof(params));
/* default to not changing parameters */
params.use_cts_prot = -1;
params.use_short_preamble = -1;
params.use_short_slot_time = -1;
params.ap_isolate = -1;
params.ht_opmode = -1;
params.p2p_ctwindow = -1;
params.p2p_opp_ps = -1;
if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
params.use_cts_prot =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
params.use_short_preamble =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
params.use_short_slot_time =
nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
params.basic_rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
params.basic_rates_len =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
}
if (info->attrs[NL80211_ATTR_AP_ISOLATE])
params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
params.ht_opmode =
nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
params.p2p_ctwindow =
nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
if (params.p2p_ctwindow < 0)
return -EINVAL;
if (params.p2p_ctwindow != 0 &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
u8 tmp;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
if (tmp > 1)
return -EINVAL;
params.p2p_opp_ps = tmp;
if (params.p2p_opp_ps &&
!(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
return -EINVAL;
}
if (!rdev->ops->change_bss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
wdev_lock(wdev);
err = rdev_change_bss(rdev, dev, &params);
wdev_unlock(wdev);
return err;
}
static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
[NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
[NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
[NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
[NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
};
static int parse_reg_rule(struct nlattr *tb[],
struct ieee80211_reg_rule *reg_rule)
{
struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_START])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_END])
return -EINVAL;
if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
return -EINVAL;
if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
return -EINVAL;
reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
freq_range->start_freq_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
freq_range->end_freq_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
freq_range->max_bandwidth_khz =
nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
power_rule->max_eirp =
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
power_rule->max_antenna_gain =
nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
if (tb[NL80211_ATTR_DFS_CAC_TIME])
reg_rule->dfs_cac_ms =
nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
return 0;
}
static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
{
char *data = NULL;
enum nl80211_user_reg_hint_type user_reg_hint_type;
/*
* You should only get this when cfg80211 hasn't yet initialized
* completely when built-in to the kernel right between the time
* window between nl80211_init() and regulatory_init(), if that is
* even possible.
*/
if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
return -EINPROGRESS;
if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
user_reg_hint_type =
nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
else
user_reg_hint_type = NL80211_USER_REG_HINT_USER;
switch (user_reg_hint_type) {
case NL80211_USER_REG_HINT_USER:
case NL80211_USER_REG_HINT_CELL_BASE:
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
return -EINVAL;
data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
return regulatory_hint_user(data, user_reg_hint_type);
case NL80211_USER_REG_HINT_INDOOR:
return regulatory_hint_indoor_user();
default:
return -EINVAL;
}
}
static int nl80211_get_mesh_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_config cur_params;
int err = 0;
void *hdr;
struct nlattr *pinfoattr;
struct sk_buff *msg;
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->get_mesh_config)
return -EOPNOTSUPP;
wdev_lock(wdev);
/* If not connected, get default parameters */
if (!wdev->mesh_id_len)
memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
else
err = rdev_get_mesh_config(rdev, dev, &cur_params);
wdev_unlock(wdev);
if (err)
return err;
/* Draw up a netlink message to send back */
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_MESH_CONFIG);
if (!hdr)
goto out;
pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
if (!pinfoattr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
cur_params.dot11MeshRetryTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
cur_params.dot11MeshConfirmTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
cur_params.dot11MeshHoldingTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
cur_params.dot11MeshMaxPeerLinks) ||
nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
cur_params.dot11MeshMaxRetries) ||
nla_put_u8(msg, NL80211_MESHCONF_TTL,
cur_params.dot11MeshTTL) ||
nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
cur_params.element_ttl) ||
nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
cur_params.auto_open_plinks) ||
nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
cur_params.dot11MeshHWMPmaxPREQretries) ||
nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
cur_params.path_refresh_time) ||
nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
cur_params.min_discovery_timeout) ||
nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
cur_params.dot11MeshHWMPactivePathTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
cur_params.dot11MeshHWMPpreqMinInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
cur_params.dot11MeshHWMPperrMinInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
cur_params.dot11MeshHWMPRootMode) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
cur_params.dot11MeshHWMPRannInterval) ||
nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
cur_params.dot11MeshGateAnnouncementProtocol) ||
nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
cur_params.dot11MeshForwarding) ||
nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
cur_params.rssi_threshold) ||
nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
cur_params.ht_opmode) ||
nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
cur_params.dot11MeshHWMProotInterval) ||
nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
cur_params.dot11MeshHWMPconfirmationInterval) ||
nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
cur_params.power_mode) ||
nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
cur_params.dot11MeshAwakeWindowDuration) ||
nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
cur_params.plink_timeout))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
genlmsg_cancel(msg, hdr);
out:
nlmsg_free(msg);
return -ENOBUFS;
}
static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
[NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
[NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
[NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
[NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
[NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
[NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
[NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
[NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
[NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
[NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
[NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
[NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
[NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
[NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
[NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
[NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
[NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
[NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
[NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
};
static const struct nla_policy
nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
[NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
[NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
};
static int nl80211_parse_mesh_config(struct genl_info *info,
struct mesh_config *cfg,
u32 *mask_out)
{
struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
u32 mask = 0;
#define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
do { \
if (tb[attr]) { \
if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
return -EINVAL; \
cfg->param = fn(tb[attr]); \
mask |= (1 << (attr - 1)); \
} \
} while (0)
if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
return -EINVAL;
if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
info->attrs[NL80211_ATTR_MESH_CONFIG],
nl80211_meshconf_params_policy))
return -EINVAL;
/* This makes sure that there aren't more than 32 mesh config
* parameters (otherwise our bitfield scheme would not work.) */
BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
/* Fill in the params struct */
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
mask, NL80211_MESHCONF_RETRY_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
mask, NL80211_MESHCONF_MAX_PEER_LINKS,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
mask, NL80211_MESHCONF_MAX_RETRIES,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
mask, NL80211_MESHCONF_TTL, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
mask, NL80211_MESHCONF_ELEMENT_TTL,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
1, 255, mask,
NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
1, 65535, mask,
NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
1, 65535, mask,
NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
1, 65535, mask,
NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPnetDiameterTraversalTime,
1, 65535, mask,
NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
mask, NL80211_MESHCONF_HWMP_ROOTMODE,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshGateAnnouncementProtocol, 0, 1,
mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
mask, NL80211_MESHCONF_FORWARDING,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
mask, NL80211_MESHCONF_RSSI_THRESHOLD,
nla_get_s32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
mask, NL80211_MESHCONF_HT_OPMODE,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
1, 65535, mask,
NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPconfirmationInterval,
1, 65535, mask,
NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
NL80211_MESH_POWER_ACTIVE,
NL80211_MESH_POWER_MAX,
mask, NL80211_MESHCONF_POWER_MODE,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
0, 65535, mask,
NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
mask, NL80211_MESHCONF_PLINK_TIMEOUT,
nla_get_u32);
if (mask_out)
*mask_out = mask;
return 0;
#undef FILL_IN_MESH_PARAM_IF_SET
}
static int nl80211_parse_mesh_setup(struct genl_info *info,
struct mesh_setup *setup)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
if (!info->attrs[NL80211_ATTR_MESH_SETUP])
return -EINVAL;
if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
info->attrs[NL80211_ATTR_MESH_SETUP],
nl80211_mesh_setup_params_policy))
return -EINVAL;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
setup->sync_method =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
IEEE80211_SYNC_METHOD_VENDOR :
IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
setup->path_sel_proto =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
IEEE80211_PATH_PROTOCOL_VENDOR :
IEEE80211_PATH_PROTOCOL_HWMP;
if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
setup->path_metric =
(nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
IEEE80211_PATH_METRIC_VENDOR :
IEEE80211_PATH_METRIC_AIRTIME;
if (tb[NL80211_MESH_SETUP_IE]) {
struct nlattr *ieattr =
tb[NL80211_MESH_SETUP_IE];
if (!is_valid_ie_attr(ieattr))
return -EINVAL;
setup->ie = nla_data(ieattr);
setup->ie_len = nla_len(ieattr);
}
if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
!(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
return -EINVAL;
setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
if (setup->is_secure)
setup->user_mpm = true;
if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
if (!setup->user_mpm)
return -EINVAL;
setup->auth_id =
nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
}
return 0;
}
static int nl80211_update_mesh_config(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct mesh_config cfg;
u32 mask;
int err;
if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->update_mesh_config)
return -EOPNOTSUPP;
err = nl80211_parse_mesh_config(info, &cfg, &mask);
if (err)
return err;
wdev_lock(wdev);
if (!wdev->mesh_id_len)
err = -ENOLINK;
if (!err)
err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
wdev_unlock(wdev);
return err;
}
static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
{
const struct ieee80211_regdomain *regdom;
struct sk_buff *msg;
void *hdr = NULL;
struct nlattr *nl_reg_rules;
unsigned int i;
if (!cfg80211_regdomain)
return -EINVAL;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOBUFS;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_REG);
if (!hdr)
goto put_failure;
if (reg_last_request_cell_base() &&
nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
NL80211_USER_REG_HINT_CELL_BASE))
goto nla_put_failure;
rcu_read_lock();
regdom = rcu_dereference(cfg80211_regdomain);
if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
(regdom->dfs_region &&
nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
goto nla_put_failure_rcu;
nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
if (!nl_reg_rules)
goto nla_put_failure_rcu;
for (i = 0; i < regdom->n_reg_rules; i++) {
struct nlattr *nl_reg_rule;
const struct ieee80211_reg_rule *reg_rule;
const struct ieee80211_freq_range *freq_range;
const struct ieee80211_power_rule *power_rule;
unsigned int max_bandwidth_khz;
reg_rule = &regdom->reg_rules[i];
freq_range = &reg_rule->freq_range;
power_rule = &reg_rule->power_rule;
nl_reg_rule = nla_nest_start(msg, i);
if (!nl_reg_rule)
goto nla_put_failure_rcu;
max_bandwidth_khz = freq_range->max_bandwidth_khz;
if (!max_bandwidth_khz)
max_bandwidth_khz = reg_get_max_bandwidth(regdom,
reg_rule);
if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
reg_rule->flags) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
freq_range->start_freq_khz) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
freq_range->end_freq_khz) ||
nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
max_bandwidth_khz) ||
nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
power_rule->max_antenna_gain) ||
nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
power_rule->max_eirp) ||
nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
reg_rule->dfs_cac_ms))
goto nla_put_failure_rcu;
nla_nest_end(msg, nl_reg_rule);
}
rcu_read_unlock();
nla_nest_end(msg, nl_reg_rules);
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure_rcu:
rcu_read_unlock();
nla_put_failure:
genlmsg_cancel(msg, hdr);
put_failure:
nlmsg_free(msg);
return -EMSGSIZE;
}
static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
struct nlattr *nl_reg_rule;
char *alpha2;
int rem_reg_rules, r;
u32 num_rules = 0, rule_idx = 0, size_of_regd;
enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
struct ieee80211_regdomain *rd;
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REG_RULES])
return -EINVAL;
alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
if (info->attrs[NL80211_ATTR_DFS_REGION])
dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
rem_reg_rules) {
num_rules++;
if (num_rules > NL80211_MAX_SUPP_REG_RULES)
return -EINVAL;
}
if (!reg_is_valid_request(alpha2))
return -EINVAL;
size_of_regd = sizeof(struct ieee80211_regdomain) +
num_rules * sizeof(struct ieee80211_reg_rule);
rd = kzalloc(size_of_regd, GFP_KERNEL);
if (!rd)
return -ENOMEM;
rd->n_reg_rules = num_rules;
rd->alpha2[0] = alpha2[0];
rd->alpha2[1] = alpha2[1];
/*
* Disable DFS master mode if the DFS region was
* not supported or known on this kernel.
*/
if (reg_supported_dfs_region(dfs_region))
rd->dfs_region = dfs_region;
nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
rem_reg_rules) {
r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
nla_data(nl_reg_rule), nla_len(nl_reg_rule),
reg_rule_policy);
if (r)
goto bad_reg;
r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
if (r)
goto bad_reg;
rule_idx++;
if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
r = -EINVAL;
goto bad_reg;
}
}
r = set_regdom(rd);
/* set_regdom took ownership */
rd = NULL;
bad_reg:
kfree(rd);
return r;
}
static int validate_scan_freqs(struct nlattr *freqs)
{
struct nlattr *attr1, *attr2;
int n_channels = 0, tmp1, tmp2;
nla_for_each_nested(attr1, freqs, tmp1) {
n_channels++;
/*
* Some hardware has a limited channel list for
* scanning, and it is pretty much nonsensical
* to scan for a channel twice, so disallow that
* and don't require drivers to check that the
* channel list they get isn't longer than what
* they can scan, as long as they can scan all
* the channels they registered at once.
*/
nla_for_each_nested(attr2, freqs, tmp2)
if (attr1 != attr2 &&
nla_get_u32(attr1) == nla_get_u32(attr2))
return 0;
}
return n_channels;
}
static int nl80211_parse_random_mac(struct nlattr **attrs,
u8 *mac_addr, u8 *mac_addr_mask)
{
int i;
if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
memset(mac_addr, 0, ETH_ALEN);
memset(mac_addr_mask, 0, ETH_ALEN);
mac_addr[0] = 0x2;
mac_addr_mask[0] = 0x3;
return 0;
}
/* need both or none */
if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
return -EINVAL;
memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
/* don't allow or configure an mcast address */
if (!is_multicast_ether_addr(mac_addr_mask) ||
is_multicast_ether_addr(mac_addr))
return -EINVAL;
/*
* allow users to pass a MAC address that has bits set outside
* of the mask, but don't bother drivers with having to deal
* with such bits
*/
for (i = 0; i < ETH_ALEN; i++)
mac_addr[i] &= mac_addr_mask[i];
return 0;
}
static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_scan_request *request;
struct nlattr *attr;
struct wiphy *wiphy;
int err, tmp, n_ssids = 0, n_channels, i;
size_t ie_len;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
wiphy = &rdev->wiphy;
if (!rdev->ops->scan)
return -EOPNOTSUPP;
if (rdev->scan_req || rdev->scan_msg) {
err = -EBUSY;
goto unlock;
}
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
if (!n_channels) {
err = -EINVAL;
goto unlock;
}
} else {
n_channels = ieee80211_get_num_supported_channels(wiphy);
}
if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
n_ssids++;
if (n_ssids > wiphy->max_scan_ssids) {
err = -EINVAL;
goto unlock;
}
if (info->attrs[NL80211_ATTR_IE])
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
if (ie_len > wiphy->max_scan_ie_len) {
err = -EINVAL;
goto unlock;
}
request = kzalloc(sizeof(*request)
+ sizeof(*request->ssids) * n_ssids
+ sizeof(*request->channels) * n_channels
+ ie_len, GFP_KERNEL);
if (!request) {
err = -ENOMEM;
goto unlock;
}
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
request->n_ssids = n_ssids;
if (ie_len) {
if (request->ssids)
request->ie = (void *)(request->ssids + n_ssids);
else
request->ie = (void *)(request->channels + n_channels);
}
i = 0;
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
/* user specified, bail out if channel not found */
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
struct ieee80211_channel *chan;
chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
if (!chan) {
err = -EINVAL;
goto out_free;
}
/* ignore disabled channels */
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
} else {
enum ieee80211_band band;
/* all channels */
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
int j;
if (!wiphy->bands[band])
continue;
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
struct ieee80211_channel *chan;
chan = &wiphy->bands[band]->channels[j];
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
}
}
if (!i) {
err = -EINVAL;
goto out_free;
}
request->n_channels = i;
i = 0;
if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
err = -EINVAL;
goto out_free;
}
request->ssids[i].ssid_len = nla_len(attr);
memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
i++;
}
}
if (info->attrs[NL80211_ATTR_IE]) {
request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
memcpy((void *)request->ie,
nla_data(info->attrs[NL80211_ATTR_IE]),
request->ie_len);
}
for (i = 0; i < IEEE80211_NUM_BANDS; i++)
if (wiphy->bands[i])
request->rates[i] =
(1 << wiphy->bands[i]->n_bitrates) - 1;
if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
nla_for_each_nested(attr,
info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
tmp) {
enum ieee80211_band band = nla_type(attr);
if (band < 0 || band >= IEEE80211_NUM_BANDS) {
err = -EINVAL;
goto out_free;
}
if (!wiphy->bands[band])
continue;
err = ieee80211_get_ratemask(wiphy->bands[band],
nla_data(attr),
nla_len(attr),
&request->rates[band]);
if (err)
goto out_free;
}
}
if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
request->flags = nla_get_u32(
info->attrs[NL80211_ATTR_SCAN_FLAGS]);
if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
!(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
err = -EOPNOTSUPP;
goto out_free;
}
if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
if (!(wiphy->features &
NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
err = -EOPNOTSUPP;
goto out_free;
}
if (wdev->current_bss) {
err = -EOPNOTSUPP;
goto out_free;
}
err = nl80211_parse_random_mac(info->attrs,
request->mac_addr,
request->mac_addr_mask);
if (err)
goto out_free;
}
}
request->no_cck =
nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
request->wdev = wdev;
request->wiphy = &rdev->wiphy;
request->scan_start = jiffies;
rdev->scan_req = request;
err = rdev_scan(rdev, request);
if (!err) {
nl80211_send_scan_start(rdev, wdev);
if (wdev->netdev)
dev_hold(wdev->netdev);
} else {
out_free:
rdev->scan_req = NULL;
kfree(request);
}
unlock:
return err;
}
static struct cfg80211_sched_scan_request *
nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
struct nlattr **attrs)
{
struct cfg80211_sched_scan_request *request;
struct nlattr *attr;
int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
u32 interval;
enum ieee80211_band band;
size_t ie_len;
struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
return ERR_PTR(-EINVAL);
if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
return ERR_PTR(-EINVAL);
interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
if (interval == 0)
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
if (!n_channels)
return ERR_PTR(-EINVAL);
} else {
n_channels = ieee80211_get_num_supported_channels(wiphy);
}
if (attrs[NL80211_ATTR_SCAN_SSIDS])
nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
tmp)
n_ssids++;
if (n_ssids > wiphy->max_sched_scan_ssids)
return ERR_PTR(-EINVAL);
/*
* First, count the number of 'real' matchsets. Due to an issue with
* the old implementation, matchsets containing only the RSSI attribute
* (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
* RSSI for all matchsets, rather than their own matchset for reporting
* all APs with a strong RSSI. This is needed to be compatible with
* older userspace that treated a matchset with only the RSSI as the
* global RSSI for all other matchsets - if there are other matchsets.
*/
if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp) {
struct nlattr *rssi;
err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
nla_data(attr), nla_len(attr),
nl80211_match_policy);
if (err)
return ERR_PTR(err);
/* add other standalone attributes here */
if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
n_match_sets++;
continue;
}
rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
if (rssi)
default_match_rssi = nla_get_s32(rssi);
}
}
/* However, if there's no other matchset, add the RSSI one */
if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
n_match_sets = 1;
if (n_match_sets > wiphy->max_match_sets)
return ERR_PTR(-EINVAL);
if (attrs[NL80211_ATTR_IE])
ie_len = nla_len(attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
if (ie_len > wiphy->max_sched_scan_ie_len)
return ERR_PTR(-EINVAL);
request = kzalloc(sizeof(*request)
+ sizeof(*request->ssids) * n_ssids
+ sizeof(*request->match_sets) * n_match_sets
+ sizeof(*request->channels) * n_channels
+ ie_len, GFP_KERNEL);
if (!request)
return ERR_PTR(-ENOMEM);
if (n_ssids)
request->ssids = (void *)&request->channels[n_channels];
request->n_ssids = n_ssids;
if (ie_len) {
if (request->ssids)
request->ie = (void *)(request->ssids + n_ssids);
else
request->ie = (void *)(request->channels + n_channels);
}
if (n_match_sets) {
if (request->ie)
request->match_sets = (void *)(request->ie + ie_len);
else if (request->ssids)
request->match_sets =
(void *)(request->ssids + n_ssids);
else
request->match_sets =
(void *)(request->channels + n_channels);
}
request->n_match_sets = n_match_sets;
i = 0;
if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
/* user specified, bail out if channel not found */
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCAN_FREQUENCIES],
tmp) {
struct ieee80211_channel *chan;
chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
if (!chan) {
err = -EINVAL;
goto out_free;
}
/* ignore disabled channels */
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
} else {
/* all channels */
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
int j;
if (!wiphy->bands[band])
continue;
for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
struct ieee80211_channel *chan;
chan = &wiphy->bands[band]->channels[j];
if (chan->flags & IEEE80211_CHAN_DISABLED)
continue;
request->channels[i] = chan;
i++;
}
}
}
if (!i) {
err = -EINVAL;
goto out_free;
}
request->n_channels = i;
i = 0;
if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
tmp) {
if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
err = -EINVAL;
goto out_free;
}
request->ssids[i].ssid_len = nla_len(attr);
memcpy(request->ssids[i].ssid, nla_data(attr),
nla_len(attr));
i++;
}
}
i = 0;
if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
nla_for_each_nested(attr,
attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp) {
struct nlattr *ssid, *rssi;
err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
nla_data(attr), nla_len(attr),
nl80211_match_policy);
if (err)
goto out_free;
ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
if (ssid) {
if (WARN_ON(i >= n_match_sets)) {
/* this indicates a programming error,
* the loop above should have verified
* things properly
*/
err = -EINVAL;
goto out_free;
}
if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
err = -EINVAL;
goto out_free;
}
memcpy(request->match_sets[i].ssid.ssid,
nla_data(ssid), nla_len(ssid));
request->match_sets[i].ssid.ssid_len =
nla_len(ssid);
/* special attribute - old implemenation w/a */
request->match_sets[i].rssi_thold =
default_match_rssi;
rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
if (rssi)
request->match_sets[i].rssi_thold =
nla_get_s32(rssi);
}
i++;
}
/* there was no other matchset, so the RSSI one is alone */
if (i == 0 && n_match_sets)
request->match_sets[0].rssi_thold = default_match_rssi;
request->min_rssi_thold = INT_MAX;
for (i = 0; i < n_match_sets; i++)
request->min_rssi_thold =
min(request->match_sets[i].rssi_thold,
request->min_rssi_thold);
} else {
request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
}
if (ie_len) {
request->ie_len = ie_len;
memcpy((void *)request->ie,
nla_data(attrs[NL80211_ATTR_IE]),
request->ie_len);
}
if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
request->flags = nla_get_u32(
attrs[NL80211_ATTR_SCAN_FLAGS]);
if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
!(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
err = -EOPNOTSUPP;
goto out_free;
}
if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
if (!wdev) /* must be net-detect */
flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
if (!(wiphy->features & flg)) {
err = -EOPNOTSUPP;
goto out_free;
}
if (wdev && wdev->current_bss) {
err = -EOPNOTSUPP;
goto out_free;
}
err = nl80211_parse_random_mac(attrs, request->mac_addr,
request->mac_addr_mask);
if (err)
goto out_free;
}
}
request->interval = interval;
request->scan_start = jiffies;
return request;
out_free:
kfree(request);
return ERR_PTR(err);
}
static int nl80211_start_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
!rdev->ops->sched_scan_start)
return -EOPNOTSUPP;
if (rdev->sched_scan_req)
return -EINPROGRESS;
rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
info->attrs);
err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
if (err)
goto out_err;
err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
if (err)
goto out_free;
rdev->sched_scan_req->dev = dev;
rdev->sched_scan_req->wiphy = &rdev->wiphy;
nl80211_send_sched_scan(rdev, dev,
NL80211_CMD_START_SCHED_SCAN);
return 0;
out_free:
kfree(rdev->sched_scan_req);
out_err:
rdev->sched_scan_req = NULL;
return err;
}
static int nl80211_stop_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
!rdev->ops->sched_scan_stop)
return -EOPNOTSUPP;
return __cfg80211_stop_sched_scan(rdev, false);
}
static int nl80211_start_radar_detection(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_chan_def chandef;
enum nl80211_dfs_regions dfs_region;
unsigned int cac_time_ms;
int err;
dfs_region = reg_get_dfs_region(wdev->wiphy);
if (dfs_region == NL80211_DFS_UNSET)
return -EINVAL;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
if (netif_carrier_ok(dev))
return -EBUSY;
if (wdev->cac_started)
return -EBUSY;
err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
wdev->iftype);
if (err < 0)
return err;
if (err == 0)
return -EINVAL;
if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
return -EINVAL;
if (!rdev->ops->start_radar_detection)
return -EOPNOTSUPP;
cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
if (WARN_ON(!cac_time_ms))
cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
cac_time_ms);
if (!err) {
wdev->chandef = chandef;
wdev->cac_started = true;
wdev->cac_start_time = jiffies;
wdev->cac_time_ms = cac_time_ms;
}
return err;
}
static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_csa_settings params;
/* csa_attrs is defined static to avoid waste of stack size - this
* function is called under RTNL lock, so this should not be a problem.
*/
static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
int err;
bool need_new_beacon = false;
int len, i;
u32 cs_count;
if (!rdev->ops->channel_switch ||
!(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
need_new_beacon = true;
/* useless if AP is not running */
if (!wdev->beacon_interval)
return -ENOTCONN;
break;
case NL80211_IFTYPE_ADHOC:
if (!wdev->ssid_len)
return -ENOTCONN;
break;
case NL80211_IFTYPE_MESH_POINT:
if (!wdev->mesh_id_len)
return -ENOTCONN;
break;
default:
return -EOPNOTSUPP;
}
memset(&params, 0, sizeof(params));
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
!info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
return -EINVAL;
/* only important for AP, IBSS and mesh create IEs internally */
if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
return -EINVAL;
/* Even though the attribute is u32, the specification says
* u8, so let's make sure we don't overflow.
*/
cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
if (cs_count > 255)
return -EINVAL;
params.count = cs_count;
if (!need_new_beacon)
goto skip_beacons;
err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
if (err)
return err;
err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
info->attrs[NL80211_ATTR_CSA_IES],
nl80211_policy);
if (err)
return err;
err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
if (err)
return err;
if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
return -EINVAL;
len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
if (!len || (len % sizeof(u16)))
return -EINVAL;
params.n_counter_offsets_beacon = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_beacon >
rdev->wiphy.max_num_csa_counters))
return -EINVAL;
params.counter_offsets_beacon =
nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
/* sanity checks - counters should fit and be the same */
for (i = 0; i < params.n_counter_offsets_beacon; i++) {
u16 offset = params.counter_offsets_beacon[i];
if (offset >= params.beacon_csa.tail_len)
return -EINVAL;
if (params.beacon_csa.tail[offset] != params.count)
return -EINVAL;
}
if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
if (!len || (len % sizeof(u16)))
return -EINVAL;
params.n_counter_offsets_presp = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_beacon >
rdev->wiphy.max_num_csa_counters))
return -EINVAL;
params.counter_offsets_presp =
nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
/* sanity checks - counters should fit and be the same */
for (i = 0; i < params.n_counter_offsets_presp; i++) {
u16 offset = params.counter_offsets_presp[i];
if (offset >= params.beacon_csa.probe_resp_len)
return -EINVAL;
if (params.beacon_csa.probe_resp[offset] !=
params.count)
return -EINVAL;
}
}
skip_beacons:
err = nl80211_parse_chandef(rdev, info, &params.chandef);
if (err)
return err;
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
wdev->iftype))
return -EINVAL;
err = cfg80211_chandef_dfs_required(wdev->wiphy,
&params.chandef,
wdev->iftype);
if (err < 0)
return err;
if (err > 0)
params.radar_required = true;
if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
params.block_tx = true;
wdev_lock(wdev);
err = rdev_channel_switch(rdev, dev, &params);
wdev_unlock(wdev);
return err;
}
static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct cfg80211_internal_bss *intbss)
{
struct cfg80211_bss *res = &intbss->pub;
const struct cfg80211_bss_ies *ies;
void *hdr;
struct nlattr *bss;
ASSERT_WDEV_LOCK(wdev);
hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
NL80211_CMD_NEW_SCAN_RESULTS);
if (!hdr)
return -1;
genl_dump_check_consistent(cb, hdr, &nl80211_fam);
if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
goto nla_put_failure;
if (wdev->netdev &&
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
goto nla_put_failure;
if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto nla_put_failure;
bss = nla_nest_start(msg, NL80211_ATTR_BSS);
if (!bss)
goto nla_put_failure;
if ((!is_zero_ether_addr(res->bssid) &&
nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
goto nla_put_failure;
rcu_read_lock();
/* indicate whether we have probe response data or not */
if (rcu_access_pointer(res->proberesp_ies) &&
nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
goto fail_unlock_rcu;
/* this pointer prefers to be pointed to probe response data
* but is always valid
*/
ies = rcu_dereference(res->ies);
if (ies) {
if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
goto fail_unlock_rcu;
if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
ies->len, ies->data))
goto fail_unlock_rcu;
}
/* and this pointer is always (unless driver didn't know) beacon data */
ies = rcu_dereference(res->beacon_ies);
if (ies && ies->from_beacon) {
if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
goto fail_unlock_rcu;
if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
ies->len, ies->data))
goto fail_unlock_rcu;
}
rcu_read_unlock();
if (res->beacon_interval &&
nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
goto nla_put_failure;
if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
jiffies_to_msecs(jiffies - intbss->ts)))
goto nla_put_failure;
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
goto nla_put_failure;
break;
case CFG80211_SIGNAL_TYPE_UNSPEC:
if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
goto nla_put_failure;
break;
default:
break;
}
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
if (intbss == wdev->current_bss &&
nla_put_u32(msg, NL80211_BSS_STATUS,
NL80211_BSS_STATUS_ASSOCIATED))
goto nla_put_failure;
break;
case NL80211_IFTYPE_ADHOC:
if (intbss == wdev->current_bss &&
nla_put_u32(msg, NL80211_BSS_STATUS,
NL80211_BSS_STATUS_IBSS_JOINED))
goto nla_put_failure;
break;
default:
break;
}
nla_nest_end(msg, bss);
return genlmsg_end(msg, hdr);
fail_unlock_rcu:
rcu_read_unlock();
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
{
struct cfg80211_registered_device *rdev;
struct cfg80211_internal_bss *scan;
struct wireless_dev *wdev;
int start = cb->args[2], idx = 0;
int err;
err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
if (err)
return err;
wdev_lock(wdev);
spin_lock_bh(&rdev->bss_lock);
cfg80211_bss_expire(rdev);
cb->seq = rdev->bss_generation;
list_for_each_entry(scan, &rdev->bss_list, list) {
if (++idx <= start)
continue;
if (nl80211_send_bss(skb, cb,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
rdev, wdev, scan) < 0) {
idx--;
break;
}
}
spin_unlock_bh(&rdev->bss_lock);
wdev_unlock(wdev);
cb->args[2] = idx;
nl80211_finish_wdev_dump(rdev);
return skb->len;
}
static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
int flags, struct net_device *dev,
struct survey_info *survey)
{
void *hdr;
struct nlattr *infoattr;
hdr = nl80211hdr_put(msg, portid, seq, flags,
NL80211_CMD_NEW_SURVEY_RESULTS);
if (!hdr)
return -ENOMEM;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
if (!infoattr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
survey->channel->center_freq))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_IN_USE) &&
nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
survey->channel_time))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
survey->channel_time_busy))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
survey->channel_time_ext_busy))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
survey->channel_time_rx))
goto nla_put_failure;
if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
survey->channel_time_tx))
goto nla_put_failure;
nla_nest_end(msg, infoattr);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_survey(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct survey_info survey;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
int survey_idx = cb->args[2];
int res;
res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
if (res)
return res;
if (!wdev->netdev) {
res = -EINVAL;
goto out_err;
}
if (!rdev->ops->dump_survey) {
res = -EOPNOTSUPP;
goto out_err;
}
while (1) {
res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
if (res == -ENOENT)
break;
if (res)
goto out_err;
/* Survey without a channel doesn't make sense */
if (!survey.channel) {
res = -EINVAL;
goto out;
}
if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
survey_idx++;
continue;
}
if (nl80211_send_survey(skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
wdev->netdev, &survey) < 0)
goto out;
survey_idx++;
}
out:
cb->args[2] = survey_idx;
res = skb->len;
out_err:
nl80211_finish_wdev_dump(rdev);
return res;
}
static bool nl80211_valid_wpa_versions(u32 wpa_versions)
{
return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
NL80211_WPA_VERSION_2));
}
static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
int err, ssid_len, ie_len = 0, sae_data_len = 0;
enum nl80211_auth_type auth_type;
struct key_parse key;
bool local_state_change;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_SSID])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
err = nl80211_parse_key(info, &key);
if (err)
return err;
if (key.idx >= 0) {
if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
return -EINVAL;
if (!key.p.key || !key.p.key_len)
return -EINVAL;
if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
key.p.key_len != WLAN_KEY_LEN_WEP40) &&
(key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
key.p.key_len != WLAN_KEY_LEN_WEP104))
return -EINVAL;
if (key.idx > 4)
return -EINVAL;
} else {
key.p.key_len = 0;
key.p.key = NULL;
}
if (key.idx >= 0) {
int i;
bool ok = false;
for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
ok = true;
break;
}
}
if (!ok)
return -EINVAL;
}
if (!rdev->ops->auth)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = nl80211_get_valid_chan(&rdev->wiphy,
info->attrs[NL80211_ATTR_WIPHY_FREQ]);
if (!chan)
return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
return -EINVAL;
if (auth_type == NL80211_AUTHTYPE_SAE &&
!info->attrs[NL80211_ATTR_SAE_DATA])
return -EINVAL;
if (info->attrs[NL80211_ATTR_SAE_DATA]) {
if (auth_type != NL80211_AUTHTYPE_SAE)
return -EINVAL;
sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
/* need to include at least Auth Transaction and Status Code */
if (sae_data_len < 4)
return -EINVAL;
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
/*
* Since we no longer track auth state, ignore
* requests to only change local state.
*/
if (local_state_change)
return 0;
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
ssid, ssid_len, ie, ie_len,
key.p.key, key.p.key_len, key.idx,
sae_data, sae_data_len);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
struct genl_info *info,
struct cfg80211_crypto_settings *settings,
int cipher_limit)
{
memset(settings, 0, sizeof(*settings));
settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
u16 proto;
proto = nla_get_u16(
info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
settings->control_port_ethertype = cpu_to_be16(proto);
if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
proto != ETH_P_PAE)
return -EINVAL;
if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
settings->control_port_no_encrypt = true;
} else
settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
void *data;
int len, i;
data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
settings->n_ciphers_pairwise = len / sizeof(u32);
if (len % sizeof(u32))
return -EINVAL;
if (settings->n_ciphers_pairwise > cipher_limit)
return -EINVAL;
memcpy(settings->ciphers_pairwise, data, len);
for (i = 0; i < settings->n_ciphers_pairwise; i++)
if (!cfg80211_supported_cipher_suite(
&rdev->wiphy,
settings->ciphers_pairwise[i]))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
settings->cipher_group =
nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
settings->cipher_group))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
settings->wpa_versions =
nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
if (!nl80211_valid_wpa_versions(settings->wpa_versions))
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
void *data;
int len;
data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
settings->n_akm_suites = len / sizeof(u32);
if (len % sizeof(u32))
return -EINVAL;
if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
return -EINVAL;
memcpy(settings->akm_suites, data, len);
}
return 0;
}
static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct ieee80211_channel *chan;
struct cfg80211_assoc_request req = {};
const u8 *bssid, *ssid;
int err, ssid_len = 0;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_SSID] ||
!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
if (!rdev->ops->assoc)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
chan = nl80211_get_valid_chan(&rdev->wiphy,
info->attrs[NL80211_ATTR_WIPHY_FREQ]);
if (!chan)
return -EINVAL;
ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
if (info->attrs[NL80211_ATTR_USE_MFP]) {
enum nl80211_mfp mfp =
nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (mfp == NL80211_MFP_REQUIRED)
req.use_mfp = true;
else if (mfp != NL80211_MFP_NO)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
req.flags |= ASSOC_REQ_DISABLE_HT;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&req.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(req.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&req.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(req.ht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
req.flags |= ASSOC_REQ_DISABLE_VHT;
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
memcpy(&req.vht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
sizeof(req.vht_capa_mask));
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&req.vht_capa,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
sizeof(req.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!(rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
!(rdev->wiphy.features & NL80211_FEATURE_QUIET))
return -EINVAL;
req.flags |= ASSOC_REQ_USE_RRM;
}
err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
if (!err) {
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
ssid, ssid_len, &req);
wdev_unlock(dev->ieee80211_ptr);
}
return err;
}
static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
int ie_len = 0, err;
u16 reason_code;
bool local_state_change;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
if (!rdev->ops->deauth)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
const u8 *ie = NULL, *bssid;
int ie_len = 0, err;
u16 reason_code;
bool local_state_change;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
return -EINVAL;
if (!rdev->ops->disassoc)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason_code == 0) {
/* Reason Code 0 is reserved */
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_IE]) {
ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
wdev_unlock(dev->ieee80211_ptr);
return err;
}
static bool
nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
int mcast_rate[IEEE80211_NUM_BANDS],
int rateval)
{
struct wiphy *wiphy = &rdev->wiphy;
bool found = false;
int band, i;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = wiphy->bands[band];
if (!sband)
continue;
for (i = 0; i < sband->n_bitrates; i++) {
if (sband->bitrates[i].bitrate == rateval) {
mcast_rate[band] = i + 1;
found = true;
break;
}
}
}
return found;
}
static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_ibss_params ibss;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
int err;
memset(&ibss, 0, sizeof(ibss));
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_SSID] ||
!nla_len(info->attrs[NL80211_ATTR_SSID]))
return -EINVAL;
ibss.beacon_interval = 100;
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
ibss.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
return -EINVAL;
}
if (!rdev->ops->join_ibss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_MAC]) {
ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (!is_valid_ether_addr(ibss.bssid))
return -EINVAL;
}
ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
if (err)
return err;
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
NL80211_IFTYPE_ADHOC))
return -EINVAL;
switch (ibss.chandef.width) {
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_20_NOHT:
break;
case NL80211_CHAN_WIDTH_20:
case NL80211_CHAN_WIDTH_40:
if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
break;
default:
return -EINVAL;
}
ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates =
nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
int n_rates =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
struct ieee80211_supported_band *sband =
wiphy->bands[ibss.chandef.chan->band];
err = ieee80211_get_ratemask(sband, rates, n_rates,
&ibss.basic_rates);
if (err)
return err;
}
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&ibss.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(ibss.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
return -EINVAL;
memcpy(&ibss.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(ibss.ht_capa));
}
if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
!nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
return -EINVAL;
if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
bool no_ht = false;
connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS],
&no_ht);
if (IS_ERR(connkeys))
return PTR_ERR(connkeys);
if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
no_ht) {
kfree(connkeys);
return -EINVAL;
}
}
ibss.control_port =
nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
ibss.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kzfree(connkeys);
return err;
}
static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
if (!rdev->ops->leave_ibss)
return -EOPNOTSUPP;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
return -EOPNOTSUPP;
return cfg80211_leave_ibss(rdev, dev, false);
}
static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
int mcast_rate[IEEE80211_NUM_BANDS];
u32 nla_rate;
int err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
if (!rdev->ops->set_mcast_rate)
return -EOPNOTSUPP;
memset(mcast_rate, 0, sizeof(mcast_rate));
if (!info->attrs[NL80211_ATTR_MCAST_RATE])
return -EINVAL;
nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
return -EINVAL;
err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
return err;
}
static struct sk_buff *
__cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
int approxlen, u32 portid, u32 seq,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
const struct nl80211_vendor_cmd_info *info,
gfp_t gfp)
{
struct sk_buff *skb;
void *hdr;
struct nlattr *data;
skb = nlmsg_new(approxlen + 100, gfp);
if (!skb)
return NULL;
hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
if (!hdr) {
kfree_skb(skb);
return NULL;
}
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
if (info) {
if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
info->vendor_id))
goto nla_put_failure;
if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
info->subcmd))
goto nla_put_failure;
}
data = nla_nest_start(skb, attr);
((void **)skb->cb)[0] = rdev;
((void **)skb->cb)[1] = hdr;
((void **)skb->cb)[2] = data;
return skb;
nla_put_failure:
kfree_skb(skb);
return NULL;
}
struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
int vendor_event_idx,
int approxlen, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct nl80211_vendor_cmd_info *info;
switch (cmd) {
case NL80211_CMD_TESTMODE:
if (WARN_ON(vendor_event_idx != -1))
return NULL;
info = NULL;
break;
case NL80211_CMD_VENDOR:
if (WARN_ON(vendor_event_idx < 0 ||
vendor_event_idx >= wiphy->n_vendor_events))
return NULL;
info = &wiphy->vendor_events[vendor_event_idx];
break;
default:
WARN_ON(1);
return NULL;
}
return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
cmd, attr, info, gfp);
}
EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
void *hdr = ((void **)skb->cb)[1];
struct nlattr *data = ((void **)skb->cb)[2];
enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
/* clear CB data for netlink core to own from now on */
memset(skb->cb, 0, sizeof(skb->cb));
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
mcgrp = NL80211_MCGRP_VENDOR;
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
mcgrp, gfp);
}
EXPORT_SYMBOL(__cfg80211_send_event_skb);
#ifdef CONFIG_NL80211_TESTMODE
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev =
__cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
int err;
if (!rdev->ops->testmode_cmd)
return -EOPNOTSUPP;
if (IS_ERR(wdev)) {
err = PTR_ERR(wdev);
if (err != -EINVAL)
return err;
wdev = NULL;
} else if (wdev->wiphy != &rdev->wiphy) {
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_TESTDATA])
return -EINVAL;
rdev->cur_cmd_info = info;
err = rdev_testmode_cmd(rdev, wdev,
nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
rdev->cur_cmd_info = NULL;
return err;
}
static int nl80211_testmode_dump(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct cfg80211_registered_device *rdev;
int err;
long phy_idx;
void *data = NULL;
int data_len = 0;
rtnl_lock();
if (cb->args[0]) {
/*
* 0 is a valid index, but not valid for args[0],
* so we need to offset by 1.
*/
phy_idx = cb->args[0] - 1;
} else {
err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
nl80211_fam.attrbuf, nl80211_fam.maxattr,
nl80211_policy);
if (err)
goto out_err;
rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
nl80211_fam.attrbuf);
if (IS_ERR(rdev)) {
err = PTR_ERR(rdev);
goto out_err;
}
phy_idx = rdev->wiphy_idx;
rdev = NULL;
if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
cb->args[1] =
(long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
}
if (cb->args[1]) {
data = nla_data((void *)cb->args[1]);
data_len = nla_len((void *)cb->args[1]);
}
rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
if (!rdev) {
err = -ENOENT;
goto out_err;
}
if (!rdev->ops->testmode_dump) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
NL80211_CMD_TESTMODE);
struct nlattr *tmdata;
if (!hdr)
break;
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
genlmsg_cancel(skb, hdr);
break;
}
tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
if (!tmdata) {
genlmsg_cancel(skb, hdr);
break;
}
err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
nla_nest_end(skb, tmdata);
if (err == -ENOBUFS || err == -ENOENT) {
genlmsg_cancel(skb, hdr);
break;
} else if (err) {
genlmsg_cancel(skb, hdr);
goto out_err;
}
genlmsg_end(skb, hdr);
}
err = skb->len;
/* see above */
cb->args[0] = phy_idx + 1;
out_err:
rtnl_unlock();
return err;
}
#endif
static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct cfg80211_connect_params connect;
struct wiphy *wiphy;
struct cfg80211_cached_keys *connkeys = NULL;
int err;
memset(&connect, 0, sizeof(connect));
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_SSID] ||
!nla_len(info->attrs[NL80211_ATTR_SSID]))
return -EINVAL;
if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
connect.auth_type =
nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
if (!nl80211_valid_auth_type(rdev, connect.auth_type,
NL80211_CMD_CONNECT))
return -EINVAL;
} else
connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
err = nl80211_crypto_settings(rdev, info, &connect.crypto,
NL80211_MAX_NR_CIPHER_SUITES);
if (err)
return err;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
wiphy = &rdev->wiphy;
connect.bg_scan_period = -1;
if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
(wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
connect.bg_scan_period =
nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
}
if (info->attrs[NL80211_ATTR_MAC])
connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
else if (info->attrs[NL80211_ATTR_MAC_HINT])
connect.bssid_hint =
nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
if (info->attrs[NL80211_ATTR_IE]) {
connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
if (info->attrs[NL80211_ATTR_USE_MFP]) {
connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
if (connect.mfp != NL80211_MFP_REQUIRED &&
connect.mfp != NL80211_MFP_NO)
return -EINVAL;
} else {
connect.mfp = NL80211_MFP_NO;
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
connect.channel = nl80211_get_valid_chan(
wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
if (!connect.channel)
return -EINVAL;
} else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
connect.channel_hint = nl80211_get_valid_chan(
wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
if (!connect.channel_hint)
return -EINVAL;
}
if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
connkeys = nl80211_parse_connkeys(rdev,
info->attrs[NL80211_ATTR_KEYS], NULL);
if (IS_ERR(connkeys))
return PTR_ERR(connkeys);
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
connect.flags |= ASSOC_REQ_DISABLE_HT;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
memcpy(&connect.ht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
sizeof(connect.ht_capa_mask));
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
kzfree(connkeys);
return -EINVAL;
}
memcpy(&connect.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(connect.ht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
connect.flags |= ASSOC_REQ_DISABLE_VHT;
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
memcpy(&connect.vht_capa_mask,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
sizeof(connect.vht_capa_mask));
if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
kzfree(connkeys);
return -EINVAL;
}
memcpy(&connect.vht_capa,
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
sizeof(connect.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!(rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
!(rdev->wiphy.features & NL80211_FEATURE_QUIET))
return -EINVAL;
connect.flags |= ASSOC_REQ_USE_RRM;
}
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
wdev_unlock(dev->ieee80211_ptr);
if (err)
kzfree(connkeys);
return err;
}
static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u16 reason;
int ret;
if (!info->attrs[NL80211_ATTR_REASON_CODE])
reason = WLAN_REASON_DEAUTH_LEAVING;
else
reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (reason == 0)
return -EINVAL;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
wdev_lock(dev->ieee80211_ptr);
ret = cfg80211_disconnect(rdev, dev, reason, true);
wdev_unlock(dev->ieee80211_ptr);
return ret;
}
static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net *net;
int err;
u32 pid;
if (!info->attrs[NL80211_ATTR_PID])
return -EINVAL;
pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
net = get_net_ns_by_pid(pid);
if (IS_ERR(net))
return PTR_ERR(net);
err = 0;
/* check if anything to do */
if (!net_eq(wiphy_net(&rdev->wiphy), net))
err = cfg80211_switch_netns(rdev, net);
put_net(net);
return err;
}
static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_pmksa *pmksa) = NULL;
struct net_device *dev = info->user_ptr[1];
struct cfg80211_pmksa pmksa;
memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!info->attrs[NL80211_ATTR_PMKID])
return -EINVAL;
pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
switch (info->genlhdr->cmd) {
case NL80211_CMD_SET_PMKSA:
rdev_ops = rdev->ops->set_pmksa;
break;
case NL80211_CMD_DEL_PMKSA:
rdev_ops = rdev->ops->del_pmksa;
break;
default:
WARN_ON(1);
break;
}
if (!rdev_ops)
return -EOPNOTSUPP;
return rdev_ops(&rdev->wiphy, dev, &pmksa);
}
static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
if (!rdev->ops->flush_pmksa)
return -EOPNOTSUPP;
return rdev_flush_pmksa(rdev, dev);
}
static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
u8 action_code, dialog_token;
u32 peer_capability = 0;
u16 status_code;
u8 *peer;
bool initiator;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
!rdev->ops->tdls_mgmt)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
!info->attrs[NL80211_ATTR_STATUS_CODE] ||
!info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
!info->attrs[NL80211_ATTR_IE] ||
!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
peer_capability =
nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
return rdev_tdls_mgmt(rdev, dev, peer, action_code,
dialog_token, status_code, peer_capability,
initiator,
nla_data(info->attrs[NL80211_ATTR_IE]),
nla_len(info->attrs[NL80211_ATTR_IE]));
}
static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
enum nl80211_tdls_operation operation;
u8 *peer;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
!rdev->ops->tdls_oper)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
return rdev_tdls_oper(rdev, dev, peer, operation);
}
static int nl80211_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_chan_def chandef;
struct sk_buff *msg;
void *hdr;
u64 cookie;
u32 duration;
int err;
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
!info->attrs[NL80211_ATTR_DURATION])
return -EINVAL;
duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
if (!rdev->ops->remain_on_channel ||
!(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
return -EOPNOTSUPP;
/*
* We should be on that channel for at least a minimum amount of
* time (10ms) but no longer than the driver supports.
*/
if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
duration > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_REMAIN_ON_CHANNEL);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
duration, &cookie);
if (err)
goto free_msg;
if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u64 cookie;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
if (!rdev->ops->cancel_remain_on_channel)
return -EOPNOTSUPP;
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
}
static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
u8 *rates, u8 rates_len)
{
u8 i;
u32 mask = 0;
for (i = 0; i < rates_len; i++) {
int rate = (rates[i] & 0x7f) * 5;
int ridx;
for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
struct ieee80211_rate *srate =
&sband->bitrates[ridx];
if (rate == srate->bitrate) {
mask |= 1 << ridx;
break;
}
}
if (ridx == sband->n_bitrates)
return 0; /* rate not found */
}
return mask;
}
static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
u8 *rates, u8 rates_len,
u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
{
u8 i;
memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
for (i = 0; i < rates_len; i++) {
int ridx, rbit;
ridx = rates[i] / 8;
rbit = BIT(rates[i] % 8);
/* check validity */
if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
return false;
/* check availability */
if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
mcs[ridx] |= rbit;
else
return false;
}
return true;
}
static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
{
u16 mcs_mask = 0;
switch (vht_mcs_map) {
case IEEE80211_VHT_MCS_NOT_SUPPORTED:
break;
case IEEE80211_VHT_MCS_SUPPORT_0_7:
mcs_mask = 0x00FF;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
mcs_mask = 0x01FF;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_9:
mcs_mask = 0x03FF;
break;
default:
break;
}
return mcs_mask;
}
static void vht_build_mcs_mask(u16 vht_mcs_map,
u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
{
u8 nss;
for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
vht_mcs_map >>= 2;
}
}
static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
struct nl80211_txrate_vht *txrate,
u16 mcs[NL80211_VHT_NSS_MAX])
{
u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
u8 i;
if (!sband->vht_cap.vht_supported)
return false;
memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
/* Build vht_mcs_mask from VHT capabilities */
vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
mcs[i] = txrate->mcs[i];
else
return false;
}
return true;
}
static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
[NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_TXRATE_HT] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_HT_RATES },
[NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
[NL80211_TXRATE_GI] = { .type = NLA_U8 },
};
static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
struct genl_info *info)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_bitrate_mask mask;
int rem, i;
struct net_device *dev = info->user_ptr[1];
struct nlattr *tx_rates;
struct ieee80211_supported_band *sband;
u16 vht_tx_mcs_map;
if (!rdev->ops->set_bitrate_mask)
return -EOPNOTSUPP;
memset(&mask, 0, sizeof(mask));
/* Default to all rates enabled */
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
sband = rdev->wiphy.bands[i];
if (!sband)
continue;
mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
memcpy(mask.control[i].ht_mcs,
sband->ht_cap.mcs.rx_mask,
sizeof(mask.control[i].ht_mcs));
if (!sband->vht_cap.vht_supported)
continue;
vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
}
/* if no rates are given set it back to the defaults */
if (!info->attrs[NL80211_ATTR_TX_RATES])
goto out;
/*
* The nested attribute uses enum nl80211_band as the index. This maps
* directly to the enum ieee80211_band values used in cfg80211.
*/
BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
enum ieee80211_band band = nla_type(tx_rates);
int err;
if (band < 0 || band >= IEEE80211_NUM_BANDS)
return -EINVAL;
sband = rdev->wiphy.bands[band];
if (sband == NULL)
return -EINVAL;
err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
nla_len(tx_rates), nl80211_txattr_policy);
if (err)
return err;
if (tb[NL80211_TXRATE_LEGACY]) {
mask.control[band].legacy = rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_LEGACY]),
nla_len(tb[NL80211_TXRATE_LEGACY]));
if ((mask.control[band].legacy == 0) &&
nla_len(tb[NL80211_TXRATE_LEGACY]))
return -EINVAL;
}
if (tb[NL80211_TXRATE_HT]) {
if (!ht_rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_HT]),
nla_len(tb[NL80211_TXRATE_HT]),
mask.control[band].ht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_VHT]) {
if (!vht_set_mcs_mask(
sband,
nla_data(tb[NL80211_TXRATE_VHT]),
mask.control[band].vht_mcs))
return -EINVAL;
}
if (tb[NL80211_TXRATE_GI]) {
mask.control[band].gi =
nla_get_u8(tb[NL80211_TXRATE_GI]);
if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
return -EINVAL;
}
if (mask.control[band].legacy == 0) {
/* don't allow empty legacy rates if HT or VHT
* are not even supported.
*/
if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
rdev->wiphy.bands[band]->vht_cap.vht_supported))
return -EINVAL;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
if (mask.control[band].ht_mcs[i])
goto out;
for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
if (mask.control[band].vht_mcs[i])
goto out;
/* legacy and mcs rates may not be both empty */
return -EINVAL;
}
}
out:
return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
}
static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
return -EINVAL;
if (info->attrs[NL80211_ATTR_FRAME_TYPE])
frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
break;
default:
return -EOPNOTSUPP;
}
/* not much point in registering if we can't reply */
if (!rdev->ops->mgmt_tx)
return -EOPNOTSUPP;
return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
}
static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
struct cfg80211_chan_def chandef;
int err;
void *hdr = NULL;
u64 cookie;
struct sk_buff *msg = NULL;
struct cfg80211_mgmt_tx_params params = {
.dont_wait_for_ack =
info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
};
if (!info->attrs[NL80211_ATTR_FRAME])
return -EINVAL;
if (!rdev->ops->mgmt_tx)
return -EOPNOTSUPP;
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
return -EINVAL;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
break;
default:
return -EOPNOTSUPP;
}
if (info->attrs[NL80211_ATTR_DURATION]) {
if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
/*
* We should wait on the channel for at least a minimum amount
* of time (10ms) but no longer than the driver supports.
*/
if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
params.wait > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
}
params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
/* get the channel if any has been specified, otherwise pass NULL to
* the driver. The latter will use the current one
*/
chandef.chan = NULL;
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
}
if (!chandef.chan && params.offchan)
return -EINVAL;
params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
int i;
if (len % sizeof(u16))
return -EINVAL;
params.n_csa_offsets = len / sizeof(u16);
params.csa_offsets =
nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
/* check that all the offsets fit the frame */
for (i = 0; i < params.n_csa_offsets; i++) {
if (params.csa_offsets[i] >= params.len)
return -EINVAL;
}
}
if (!params.dont_wait_for_ack) {
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_FRAME);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
}
params.chan = chandef.chan;
err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
if (err)
goto free_msg;
if (msg) {
if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
}
return 0;
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
u64 cookie;
if (!info->attrs[NL80211_ATTR_COOKIE])
return -EINVAL;
if (!rdev->ops->mgmt_tx_cancel_wait)
return -EOPNOTSUPP;
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
break;
default:
return -EOPNOTSUPP;
}
cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
}
static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
u8 ps_state;
bool state;
int err;
if (!info->attrs[NL80211_ATTR_PS_STATE])
return -EINVAL;
ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
return -EINVAL;
wdev = dev->ieee80211_ptr;
if (!rdev->ops->set_power_mgmt)
return -EOPNOTSUPP;
state = (ps_state == NL80211_PS_ENABLED) ? true : false;
if (state == wdev->ps)
return 0;
err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
if (!err)
wdev->ps = state;
return err;
}
static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
enum nl80211_ps_state ps_state;
struct wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
struct sk_buff *msg;
void *hdr;
int err;
wdev = dev->ieee80211_ptr;
if (!rdev->ops->set_power_mgmt)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_POWER_SAVE);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
if (wdev->ps)
ps_state = NL80211_PS_ENABLED;
else
ps_state = NL80211_PS_DISABLED;
if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static const struct nla_policy
nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
[NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
[NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
};
static int nl80211_set_cqm_txe(struct genl_info *info,
u32 rate, u32 pkts, u32 intvl)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
return -EINVAL;
if (!rdev->ops->set_cqm_txe_config)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
}
static int nl80211_set_cqm_rssi(struct genl_info *info,
s32 threshold, u32 hysteresis)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (threshold > 0)
return -EINVAL;
/* disabling - hysteresis should also be zero then */
if (threshold == 0)
hysteresis = 0;
if (!rdev->ops->set_cqm_rssi_config)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_STATION &&
wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
return -EOPNOTSUPP;
return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
}
static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
struct nlattr *cqm;
int err;
cqm = info->attrs[NL80211_ATTR_CQM];
if (!cqm)
return -EINVAL;
err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
nl80211_attr_cqm_policy);
if (err)
return err;
if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
return nl80211_set_cqm_rssi(info, threshold, hysteresis);
}
if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
return nl80211_set_cqm_txe(info, rate, pkts, intvl);
}
return -EINVAL;
}
static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct ocb_setup setup = {};
int err;
err = nl80211_parse_chandef(rdev, info, &setup.chandef);
if (err)
return err;
return cfg80211_join_ocb(rdev, dev, &setup);
}
static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
return cfg80211_leave_ocb(rdev, dev);
}
static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct mesh_config cfg;
struct mesh_setup setup;
int err;
/* start with default */
memcpy(&cfg, &default_mesh_config, sizeof(cfg));
memcpy(&setup, &default_mesh_setup, sizeof(setup));
if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
/* and parse parameters if given */
err = nl80211_parse_mesh_config(info, &cfg, NULL);
if (err)
return err;
}
if (!info->attrs[NL80211_ATTR_MESH_ID] ||
!nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
return -EINVAL;
setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
!nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
return -EINVAL;
if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
setup.beacon_interval =
nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
if (setup.beacon_interval < 10 ||
setup.beacon_interval > 10000)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
setup.dtim_period =
nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
if (setup.dtim_period < 1 || setup.dtim_period > 100)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
/* parse additional setup parameters if given */
err = nl80211_parse_mesh_setup(info, &setup);
if (err)
return err;
}
if (setup.user_mpm)
cfg.auto_open_plinks = false;
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
err = nl80211_parse_chandef(rdev, info, &setup.chandef);
if (err)
return err;
} else {
/* cfg80211_join_mesh() will sort it out */
setup.chandef.chan = NULL;
}
if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
int n_rates =
nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
struct ieee80211_supported_band *sband;
if (!setup.chandef.chan)
return -EINVAL;
sband = rdev->wiphy.bands[setup.chandef.chan->band];
err = ieee80211_get_ratemask(sband, rates, n_rates,
&setup.basic_rates);
if (err)
return err;
}
return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
}
static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
return cfg80211_leave_mesh(rdev, dev);
}
#ifdef CONFIG_PM
static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
struct nlattr *nl_pats, *nl_pat;
int i, pat_len;
if (!wowlan->n_patterns)
return 0;
nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
if (!nl_pats)
return -ENOBUFS;
for (i = 0; i < wowlan->n_patterns; i++) {
nl_pat = nla_nest_start(msg, i + 1);
if (!nl_pat)
return -ENOBUFS;
pat_len = wowlan->patterns[i].pattern_len;
if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
wowlan->patterns[i].mask) ||
nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
wowlan->patterns[i].pattern) ||
nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
wowlan->patterns[i].pkt_offset))
return -ENOBUFS;
nla_nest_end(msg, nl_pat);
}
nla_nest_end(msg, nl_pats);
return 0;
}
static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
struct cfg80211_wowlan_tcp *tcp)
{
struct nlattr *nl_tcp;
if (!tcp)
return 0;
nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
if (!nl_tcp)
return -ENOBUFS;
if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
tcp->payload_len, tcp->payload) ||
nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
tcp->data_interval) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
tcp->wake_len, tcp->wake_data) ||
nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
return -ENOBUFS;
if (tcp->payload_seq.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
sizeof(tcp->payload_seq), &tcp->payload_seq))
return -ENOBUFS;
if (tcp->payload_tok.len &&
nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
sizeof(tcp->payload_tok) + tcp->tokens_size,
&tcp->payload_tok))
return -ENOBUFS;
nla_nest_end(msg, nl_tcp);
return 0;
}
static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct sk_buff *msg;
void *hdr;
u32 size = NLMSG_DEFAULT_SIZE;
if (!rdev->wiphy.wowlan)
return -EOPNOTSUPP;
if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
/* adjust size to have room for all the data */
size += rdev->wiphy.wowlan_config->tcp->tokens_size +
rdev->wiphy.wowlan_config->tcp->payload_len +
rdev->wiphy.wowlan_config->tcp->wake_len +
rdev->wiphy.wowlan_config->tcp->wake_len / 8;
}
msg = nlmsg_new(size, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_WOWLAN);
if (!hdr)
goto nla_put_failure;
if (rdev->wiphy.wowlan_config) {
struct nlattr *nl_wowlan;
nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
if (!nl_wowlan)
goto nla_put_failure;
if ((rdev->wiphy.wowlan_config->any &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
(rdev->wiphy.wowlan_config->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
(rdev->wiphy.wowlan_config->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
(rdev->wiphy.wowlan_config->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
(rdev->wiphy.wowlan_config->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
(rdev->wiphy.wowlan_config->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
(rdev->wiphy.wowlan_config->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (nl80211_send_wowlan_patterns(msg, rdev))
goto nla_put_failure;
if (nl80211_send_wowlan_tcp(msg,
rdev->wiphy.wowlan_config->tcp))
goto nla_put_failure;
nla_nest_end(msg, nl_wowlan);
}
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
struct nlattr *attr,
struct cfg80211_wowlan *trig)
{
struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
struct cfg80211_wowlan_tcp *cfg;
struct nl80211_wowlan_tcp_data_token *tok = NULL;
struct nl80211_wowlan_tcp_data_seq *seq = NULL;
u32 size;
u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
int err, port;
if (!rdev->wiphy.wowlan->tcp)
return -EINVAL;
err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
nla_data(attr), nla_len(attr),
nl80211_wowlan_tcp_policy);
if (err)
return err;
if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
!tb[NL80211_WOWLAN_TCP_DST_MAC] ||
!tb[NL80211_WOWLAN_TCP_DST_PORT] ||
!tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
!tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
!tb[NL80211_WOWLAN_TCP_WAKE_MASK])
return -EINVAL;
data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
return -EINVAL;
if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
rdev->wiphy.wowlan->tcp->data_interval_max ||
nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
return -EINVAL;
wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
return -EINVAL;
wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
return -EINVAL;
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
tokens_size = tokln - sizeof(*tok);
if (!tok->len || tokens_size % tok->len)
return -EINVAL;
if (!rdev->wiphy.wowlan->tcp->tok)
return -EINVAL;
if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
return -EINVAL;
if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
return -EINVAL;
if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
return -EINVAL;
if (tok->offset + tok->len > data_size)
return -EINVAL;
}
if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
if (!rdev->wiphy.wowlan->tcp->seq)
return -EINVAL;
if (seq->len == 0 || seq->len > 4)
return -EINVAL;
if (seq->len + seq->offset > data_size)
return -EINVAL;
}
size = sizeof(*cfg);
size += data_size;
size += wake_size + wake_mask_size;
size += tokens_size;
cfg = kzalloc(size, GFP_KERNEL);
if (!cfg)
return -ENOMEM;
cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
ETH_ALEN);
if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
else
port = 0;
#ifdef CONFIG_INET
/* allocate a socket and port for it and use it */
err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
IPPROTO_TCP, &cfg->sock, 1);
if (err) {
kfree(cfg);
return err;
}
if (inet_csk_get_port(cfg->sock->sk, port)) {
sock_release(cfg->sock);
kfree(cfg);
return -EADDRINUSE;
}
cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
#else
if (!port) {
kfree(cfg);
return -EINVAL;
}
cfg->src_port = port;
#endif
cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
cfg->payload_len = data_size;
cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
memcpy((void *)cfg->payload,
nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
data_size);
if (seq)
cfg->payload_seq = *seq;
cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
cfg->wake_len = wake_size;
cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
memcpy((void *)cfg->wake_data,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
wake_size);
cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
data_size + wake_size;
memcpy((void *)cfg->wake_mask,
nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
wake_mask_size);
if (tok) {
cfg->tokens_size = tokens_size;
memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
}
trig->tcp = cfg;
return 0;
}
static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
const struct wiphy_wowlan_support *wowlan,
struct nlattr *attr,
struct cfg80211_wowlan *trig)
{
struct nlattr **tb;
int err;
tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
if (!tb)
return -ENOMEM;
if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
err = -EOPNOTSUPP;
goto out;
}
err = nla_parse(tb, NL80211_ATTR_MAX,
nla_data(attr), nla_len(attr),
nl80211_policy);
if (err)
goto out;
trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
err = PTR_ERR_OR_ZERO(trig->nd_config);
if (err)
trig->nd_config = NULL;
out:
kfree(tb);
return err;
}
static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
struct cfg80211_wowlan new_triggers = {};
struct cfg80211_wowlan *ntrig;
const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
int err, i;
bool prev_enabled = rdev->wiphy.wowlan_config;
if (!wowlan)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
cfg80211_rdev_free_wowlan(rdev);
rdev->wiphy.wowlan_config = NULL;
goto set_wakeup;
}
err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
nl80211_wowlan_policy);
if (err)
return err;
if (tb[NL80211_WOWLAN_TRIG_ANY]) {
if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
return -EINVAL;
new_triggers.any = true;
}
if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
return -EINVAL;
new_triggers.disconnect = true;
}
if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
return -EINVAL;
new_triggers.magic_pkt = true;
}
if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
return -EINVAL;
if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
return -EINVAL;
new_triggers.gtk_rekey_failure = true;
}
if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
return -EINVAL;
new_triggers.eap_identity_req = true;
}
if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
return -EINVAL;
new_triggers.four_way_handshake = true;
}
if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
return -EINVAL;
new_triggers.rfkill_release = true;
}
if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
struct nlattr *pat;
int n_patterns = 0;
int rem, pat_len, mask_len, pkt_offset;
struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
rem)
n_patterns++;
if (n_patterns > wowlan->n_patterns)
return -EINVAL;
new_triggers.patterns = kcalloc(n_patterns,
sizeof(new_triggers.patterns[0]),
GFP_KERNEL);
if (!new_triggers.patterns)
return -ENOMEM;
new_triggers.n_patterns = n_patterns;
i = 0;
nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
rem) {
u8 *mask_pat;
nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
nla_len(pat), NULL);
err = -EINVAL;
if (!pat_tb[NL80211_PKTPAT_MASK] ||
!pat_tb[NL80211_PKTPAT_PATTERN])
goto error;
pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
mask_len = DIV_ROUND_UP(pat_len, 8);
if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
goto error;
if (pat_len > wowlan->pattern_max_len ||
pat_len < wowlan->pattern_min_len)
goto error;
if (!pat_tb[NL80211_PKTPAT_OFFSET])
pkt_offset = 0;
else
pkt_offset = nla_get_u32(
pat_tb[NL80211_PKTPAT_OFFSET]);
if (pkt_offset > wowlan->max_pkt_offset)
goto error;
new_triggers.patterns[i].pkt_offset = pkt_offset;
mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
if (!mask_pat) {
err = -ENOMEM;
goto error;
}
new_triggers.patterns[i].mask = mask_pat;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
mask_len);
mask_pat += mask_len;
new_triggers.patterns[i].pattern = mask_pat;
new_triggers.patterns[i].pattern_len = pat_len;
memcpy(mask_pat,
nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
pat_len);
i++;
}
}
if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
err = nl80211_parse_wowlan_tcp(
rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
&new_triggers);
if (err)
goto error;
}
if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
err = nl80211_parse_wowlan_nd(
rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
&new_triggers);
if (err)
goto error;
}
ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
if (!ntrig) {
err = -ENOMEM;
goto error;
}
cfg80211_rdev_free_wowlan(rdev);
rdev->wiphy.wowlan_config = ntrig;
set_wakeup:
if (rdev->ops->set_wakeup &&
prev_enabled != !!rdev->wiphy.wowlan_config)
rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
return 0;
error:
for (i = 0; i < new_triggers.n_patterns; i++)
kfree(new_triggers.patterns[i].mask);
kfree(new_triggers.patterns);
if (new_triggers.tcp && new_triggers.tcp->sock)
sock_release(new_triggers.tcp->sock);
kfree(new_triggers.tcp);
return err;
}
#endif
static int nl80211_send_coalesce_rules(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
int i, j, pat_len;
struct cfg80211_coalesce_rules *rule;
if (!rdev->coalesce->n_rules)
return 0;
nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
if (!nl_rules)
return -ENOBUFS;
for (i = 0; i < rdev->coalesce->n_rules; i++) {
nl_rule = nla_nest_start(msg, i + 1);
if (!nl_rule)
return -ENOBUFS;
rule = &rdev->coalesce->rules[i];
if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
rule->delay))
return -ENOBUFS;
if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
rule->condition))
return -ENOBUFS;
nl_pats = nla_nest_start(msg,
NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
if (!nl_pats)
return -ENOBUFS;
for (j = 0; j < rule->n_patterns; j++) {
nl_pat = nla_nest_start(msg, j + 1);
if (!nl_pat)
return -ENOBUFS;
pat_len = rule->patterns[j].pattern_len;
if (nla_put(msg, NL80211_PKTPAT_MASK,
DIV_ROUND_UP(pat_len, 8),
rule->patterns[j].mask) ||
nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
rule->patterns[j].pattern) ||
nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
rule->patterns[j].pkt_offset))
return -ENOBUFS;
nla_nest_end(msg, nl_pat);
}
nla_nest_end(msg, nl_pats);
nla_nest_end(msg, nl_rule);
}
nla_nest_end(msg, nl_rules);
return 0;
}
static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct sk_buff *msg;
void *hdr;
if (!rdev->wiphy.coalesce)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_COALESCE);
if (!hdr)
goto nla_put_failure;
if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
nlmsg_free(msg);
return -ENOBUFS;
}
void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
{
struct cfg80211_coalesce *coalesce = rdev->coalesce;
int i, j;
struct cfg80211_coalesce_rules *rule;
if (!coalesce)
return;
for (i = 0; i < coalesce->n_rules; i++) {
rule = &coalesce->rules[i];
for (j = 0; j < rule->n_patterns; j++)
kfree(rule->patterns[j].mask);
kfree(rule->patterns);
}
kfree(coalesce->rules);
kfree(coalesce);
rdev->coalesce = NULL;
}
static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
struct nlattr *rule,
struct cfg80211_coalesce_rules *new_rule)
{
int err, i;
const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
nla_len(rule), nl80211_coalesce_policy);
if (err)
return err;
if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
new_rule->delay =
nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
if (new_rule->delay > coalesce->max_delay)
return -EINVAL;
if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
new_rule->condition =
nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
return -EINVAL;
if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
return -EINVAL;
nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
rem)
n_patterns++;
if (n_patterns > coalesce->n_patterns)
return -EINVAL;
new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
GFP_KERNEL);
if (!new_rule->patterns)
return -ENOMEM;
new_rule->n_patterns = n_patterns;
i = 0;
nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
rem) {
u8 *mask_pat;
nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
nla_len(pat), NULL);
if (!pat_tb[NL80211_PKTPAT_MASK] ||
!pat_tb[NL80211_PKTPAT_PATTERN])
return -EINVAL;
pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
mask_len = DIV_ROUND_UP(pat_len, 8);
if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
return -EINVAL;
if (pat_len > coalesce->pattern_max_len ||
pat_len < coalesce->pattern_min_len)
return -EINVAL;
if (!pat_tb[NL80211_PKTPAT_OFFSET])
pkt_offset = 0;
else
pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
if (pkt_offset > coalesce->max_pkt_offset)
return -EINVAL;
new_rule->patterns[i].pkt_offset = pkt_offset;
mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
if (!mask_pat)
return -ENOMEM;
new_rule->patterns[i].mask = mask_pat;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
mask_len);
mask_pat += mask_len;
new_rule->patterns[i].pattern = mask_pat;
new_rule->patterns[i].pattern_len = pat_len;
memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
pat_len);
i++;
}
return 0;
}
static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
struct cfg80211_coalesce new_coalesce = {};
struct cfg80211_coalesce *n_coalesce;
int err, rem_rule, n_rules = 0, i, j;
struct nlattr *rule;
struct cfg80211_coalesce_rules *tmp_rule;
if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
cfg80211_rdev_free_coalesce(rdev);
rdev->ops->set_coalesce(&rdev->wiphy, NULL);
return 0;
}
nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
rem_rule)
n_rules++;
if (n_rules > coalesce->n_rules)
return -EINVAL;
new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
GFP_KERNEL);
if (!new_coalesce.rules)
return -ENOMEM;
new_coalesce.n_rules = n_rules;
i = 0;
nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
rem_rule) {
err = nl80211_parse_coalesce_rule(rdev, rule,
&new_coalesce.rules[i]);
if (err)
goto error;
i++;
}
err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
if (err)
goto error;
n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
if (!n_coalesce) {
err = -ENOMEM;
goto error;
}
cfg80211_rdev_free_coalesce(rdev);
rdev->coalesce = n_coalesce;
return 0;
error:
for (i = 0; i < new_coalesce.n_rules; i++) {
tmp_rule = &new_coalesce.rules[i];
for (j = 0; j < tmp_rule->n_patterns; j++)
kfree(tmp_rule->patterns[j].mask);
kfree(tmp_rule->patterns);
}
kfree(new_coalesce.rules);
return err;
}
static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct nlattr *tb[NUM_NL80211_REKEY_DATA];
struct cfg80211_gtk_rekey_data rekey_data;
int err;
if (!info->attrs[NL80211_ATTR_REKEY_DATA])
return -EINVAL;
err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
nl80211_rekey_policy);
if (err)
return err;
if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
return -ERANGE;
if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
return -ERANGE;
if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
return -ERANGE;
rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
wdev_lock(wdev);
if (!wdev->current_bss) {
err = -ENOTCONN;
goto out;
}
if (!rdev->ops->set_rekey_data) {
err = -EOPNOTSUPP;
goto out;
}
err = rdev_set_rekey_data(rdev, dev, &rekey_data);
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_register_unexpected_frame(struct sk_buff *skb,
struct genl_info *info)
{
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
return -EINVAL;
if (wdev->ap_unexpected_nlportid)
return -EBUSY;
wdev->ap_unexpected_nlportid = info->snd_portid;
return 0;
}
static int nl80211_probe_client(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct sk_buff *msg;
void *hdr;
const u8 *addr;
u64 cookie;
int err;
if (wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
if (!rdev->ops->probe_client)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_PROBE_CLIENT);
if (!hdr) {
err = -ENOBUFS;
goto free_msg;
}
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
err = rdev_probe_client(rdev, dev, addr, &cookie);
if (err)
goto free_msg;
if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
err = -ENOBUFS;
free_msg:
nlmsg_free(msg);
return err;
}
static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_beacon_registration *reg, *nreg;
int rv;
if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
return -EOPNOTSUPP;
nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
if (!nreg)
return -ENOMEM;
/* First, check if already registered. */
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry(reg, &rdev->beacon_registrations, list) {
if (reg->nlportid == info->snd_portid) {
rv = -EALREADY;
goto out_err;
}
}
/* Add it to the list */
nreg->nlportid = info->snd_portid;
list_add(&nreg->list, &rdev->beacon_registrations);
spin_unlock_bh(&rdev->beacon_registrations_lock);
return 0;
out_err:
spin_unlock_bh(&rdev->beacon_registrations_lock);
kfree(nreg);
return rv;
}
static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
int err;
if (!rdev->ops->start_p2p_device)
return -EOPNOTSUPP;
if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
return -EOPNOTSUPP;
if (wdev->p2p_started)
return 0;
if (rfkill_blocked(rdev->rfkill))
return -ERFKILL;
err = rdev_start_p2p_device(rdev, wdev);
if (err)
return err;
wdev->p2p_started = true;
rdev->opencount++;
return 0;
}
static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
return -EOPNOTSUPP;
if (!rdev->ops->stop_p2p_device)
return -EOPNOTSUPP;
cfg80211_stop_p2p_device(rdev, wdev);
return 0;
}
static int nl80211_get_protocol_features(struct sk_buff *skb,
struct genl_info *info)
{
void *hdr;
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_PROTOCOL_FEATURES);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_reply(msg, info);
nla_put_failure:
kfree_skb(msg);
return -ENOBUFS;
}
static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_update_ft_ies_params ft_params;
struct net_device *dev = info->user_ptr[1];
if (!rdev->ops->update_ft_ies)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_MDID] ||
!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
memset(&ft_params, 0, sizeof(ft_params));
ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
return rdev_update_ft_ies(rdev, dev, &ft_params);
}
static int nl80211_crit_protocol_start(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
u16 duration;
int ret;
if (!rdev->ops->crit_proto_start)
return -EOPNOTSUPP;
if (WARN_ON(!rdev->ops->crit_proto_stop))
return -EINVAL;
if (rdev->crit_proto_nlportid)
return -EBUSY;
/* determine protocol if provided */
if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
if (proto >= NUM_NL80211_CRIT_PROTO)
return -EINVAL;
/* timeout must be provided */
if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
return -EINVAL;
duration =
nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
return -ERANGE;
ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
if (!ret)
rdev->crit_proto_nlportid = info->snd_portid;
return ret;
}
static int nl80211_crit_protocol_stop(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev = info->user_ptr[1];
if (!rdev->ops->crit_proto_stop)
return -EOPNOTSUPP;
if (rdev->crit_proto_nlportid) {
rdev->crit_proto_nlportid = 0;
rdev_crit_proto_stop(rdev, wdev);
}
return 0;
}
static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev =
__cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
int i, err;
u32 vid, subcmd;
if (!rdev->wiphy.vendor_commands)
return -EOPNOTSUPP;
if (IS_ERR(wdev)) {
err = PTR_ERR(wdev);
if (err != -EINVAL)
return err;
wdev = NULL;
} else if (wdev->wiphy != &rdev->wiphy) {
return -EINVAL;
}
if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
!info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
return -EINVAL;
vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
const struct wiphy_vendor_command *vcmd;
void *data = NULL;
int len = 0;
vcmd = &rdev->wiphy.vendor_commands[i];
if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
continue;
if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
WIPHY_VENDOR_CMD_NEED_NETDEV)) {
if (!wdev)
return -EINVAL;
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
!wdev->netdev)
return -EINVAL;
if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
if (wdev->netdev &&
!netif_running(wdev->netdev))
return -ENETDOWN;
if (!wdev->netdev && !wdev->p2p_started)
return -ENETDOWN;
}
} else {
wdev = NULL;
}
if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
}
rdev->cur_cmd_info = info;
err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
data, len);
rdev->cur_cmd_info = NULL;
return err;
}
return -EOPNOTSUPP;
}
struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
enum nl80211_commands cmd,
enum nl80211_attrs attr,
int approxlen)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
if (WARN_ON(!rdev->cur_cmd_info))
return NULL;
return __cfg80211_alloc_vendor_skb(rdev, approxlen,
rdev->cur_cmd_info->snd_portid,
rdev->cur_cmd_info->snd_seq,
cmd, attr, NULL, GFP_KERNEL);
}
EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
{
struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
void *hdr = ((void **)skb->cb)[1];
struct nlattr *data = ((void **)skb->cb)[2];
/* clear CB data for netlink core to own from now on */
memset(skb->cb, 0, sizeof(skb->cb));
if (WARN_ON(!rdev->cur_cmd_info)) {
kfree_skb(skb);
return -EINVAL;
}
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
return genlmsg_reply(skb, rdev->cur_cmd_info);
}
EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
static int nl80211_set_qos_map(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct cfg80211_qos_map *qos_map = NULL;
struct net_device *dev = info->user_ptr[1];
u8 *pos, len, num_des, des_len, des;
int ret;
if (!rdev->ops->set_qos_map)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_QOS_MAP]) {
pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
len > IEEE80211_QOS_MAP_LEN_MAX)
return -EINVAL;
qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
if (!qos_map)
return -ENOMEM;
num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
if (num_des) {
des_len = num_des *
sizeof(struct cfg80211_dscp_exception);
memcpy(qos_map->dscp_exception, pos, des_len);
qos_map->num_des = num_des;
for (des = 0; des < num_des; des++) {
if (qos_map->dscp_exception[des].up > 7) {
kfree(qos_map);
return -EINVAL;
}
}
pos += des_len;
}
memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
}
wdev_lock(dev->ieee80211_ptr);
ret = nl80211_key_allowed(dev->ieee80211_ptr);
if (!ret)
ret = rdev_set_qos_map(rdev, dev, qos_map);
wdev_unlock(dev->ieee80211_ptr);
kfree(qos_map);
return ret;
}
static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *peer;
u8 tsid, up;
u16 admitted_time = 0;
int err;
if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_USER_PRIO])
return -EINVAL;
tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
if (tsid >= IEEE80211_NUM_TIDS)
return -EINVAL;
up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
if (up >= IEEE80211_NUM_UPS)
return -EINVAL;
/* WMM uses TIDs 0-7 even for TSPEC */
if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
/* TODO: handle 802.11 TSPEC/admission control
* need more attributes for that (e.g. BA session requirement);
* change the WMM adminssion test above to allow both then
*/
return -EINVAL;
}
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
admitted_time =
nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
if (!admitted_time)
return -EINVAL;
}
wdev_lock(wdev);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->current_bss)
break;
err = -ENOTCONN;
goto out;
default:
err = -EOPNOTSUPP;
goto out;
}
err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
out:
wdev_unlock(wdev);
return err;
}
static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *peer;
u8 tsid;
int err;
if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
wdev_lock(wdev);
err = rdev_del_tx_ts(rdev, dev, tsid, peer);
wdev_unlock(wdev);
return err;
}
static int nl80211_tdls_channel_switch(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_chan_def chandef = {};
const u8 *addr;
u8 oper_class;
int err;
if (!rdev->ops->tdls_channel_switch ||
!(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
break;
default:
return -EOPNOTSUPP;
}
if (!info->attrs[NL80211_ATTR_MAC] ||
!info->attrs[NL80211_ATTR_OPER_CLASS])
return -EINVAL;
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
/*
* Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
* section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
* specification is not defined for them.
*/
if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
chandef.width != NL80211_CHAN_WIDTH_20)
return -EINVAL;
/* we will be active on the TDLS link */
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
return -EINVAL;
/* don't allow switching to DFS channels */
if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
return -EINVAL;
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
wdev_lock(wdev);
err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
wdev_unlock(wdev);
return err;
}
static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
const u8 *addr;
if (!rdev->ops->tdls_channel_switch ||
!rdev->ops->tdls_cancel_channel_switch ||
!(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
return -EOPNOTSUPP;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
break;
default:
return -EOPNOTSUPP;
}
if (!info->attrs[NL80211_ATTR_MAC])
return -EINVAL;
addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
wdev_lock(wdev);
rdev_tdls_cancel_channel_switch(rdev, dev, addr);
wdev_unlock(wdev);
return 0;
}
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
#define NL80211_FLAG_CHECK_NETDEV_UP 0x08
#define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
NL80211_FLAG_CHECK_NETDEV_UP)
#define NL80211_FLAG_NEED_WDEV 0x10
/* If a netdev is associated, it must be UP, P2P must be started */
#define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
NL80211_FLAG_CHECK_NETDEV_UP)
#define NL80211_FLAG_CLEAR_SKB 0x20
static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
struct net_device *dev;
bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
if (rtnl)
rtnl_lock();
if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
if (IS_ERR(rdev)) {
if (rtnl)
rtnl_unlock();
return PTR_ERR(rdev);
}
info->user_ptr[0] = rdev;
} else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
ASSERT_RTNL();
wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
info->attrs);
if (IS_ERR(wdev)) {
if (rtnl)
rtnl_unlock();
return PTR_ERR(wdev);
}
dev = wdev->netdev;
rdev = wiphy_to_rdev(wdev->wiphy);
if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
if (!dev) {
if (rtnl)
rtnl_unlock();
return -EINVAL;
}
info->user_ptr[1] = dev;
} else {
info->user_ptr[1] = wdev;
}
if (dev) {
if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
!netif_running(dev)) {
if (rtnl)
rtnl_unlock();
return -ENETDOWN;
}
dev_hold(dev);
} else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
if (!wdev->p2p_started) {
if (rtnl)
rtnl_unlock();
return -ENETDOWN;
}
}
info->user_ptr[0] = rdev;
}
return 0;
}
static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info)
{
if (info->user_ptr[1]) {
if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
struct wireless_dev *wdev = info->user_ptr[1];
if (wdev->netdev)
dev_put(wdev->netdev);
} else {
dev_put(info->user_ptr[1]);
}
}
if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
rtnl_unlock();
/* If needed, clear the netlink message payload from the SKB
* as it might contain key data that shouldn't stick around on
* the heap after the SKB is freed. The netlink message header
* is still needed for further processing, so leave it intact.
*/
if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
struct nlmsghdr *nlh = nlmsg_hdr(skb);
memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
}
}
static const struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
.doit = nl80211_get_wiphy,
.dumpit = nl80211_dump_wiphy,
.done = nl80211_dump_wiphy_done,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WIPHY,
.doit = nl80211_set_wiphy,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_INTERFACE,
.doit = nl80211_get_interface,
.dumpit = nl80211_dump_interface,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_INTERFACE,
.doit = nl80211_set_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_INTERFACE,
.doit = nl80211_new_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_INTERFACE,
.doit = nl80211_del_interface,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_KEY,
.doit = nl80211_get_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_KEY,
.doit = nl80211_set_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
.cmd = NL80211_CMD_NEW_KEY,
.doit = nl80211_new_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
.cmd = NL80211_CMD_DEL_KEY,
.doit = nl80211_del_key,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BEACON,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_set_beacon,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_START_AP,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_start_ap,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_STOP_AP,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.doit = nl80211_stop_ap,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_STATION,
.doit = nl80211_get_station,
.dumpit = nl80211_dump_station,
.policy = nl80211_policy,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_STATION,
.doit = nl80211_set_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_STATION,
.doit = nl80211_new_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_STATION,
.doit = nl80211_del_station,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_MPATH,
.doit = nl80211_get_mpath,
.dumpit = nl80211_dump_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_MPP,
.doit = nl80211_get_mpp,
.dumpit = nl80211_dump_mpp,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MPATH,
.doit = nl80211_set_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_NEW_MPATH,
.doit = nl80211_new_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_MPATH,
.doit = nl80211_del_mpath,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_BSS,
.doit = nl80211_set_bss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_REG,
.doit = nl80211_get_reg,
.policy = nl80211_policy,
.internal_flags = NL80211_FLAG_NEED_RTNL,
/* can be retrieved by unprivileged users */
},
{
.cmd = NL80211_CMD_SET_REG,
.doit = nl80211_set_reg,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REQ_SET_REG,
.doit = nl80211_req_set_reg,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
{
.cmd = NL80211_CMD_GET_MESH_CONFIG,
.doit = nl80211_get_mesh_config,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MESH_CONFIG,
.doit = nl80211_update_mesh_config,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TRIGGER_SCAN,
.doit = nl80211_trigger_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SCAN,
.policy = nl80211_policy,
.dumpit = nl80211_dump_scan,
},
{
.cmd = NL80211_CMD_START_SCHED_SCAN,
.doit = nl80211_start_sched_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_STOP_SCHED_SCAN,
.doit = nl80211_stop_sched_scan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_AUTHENTICATE,
.doit = nl80211_authenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
.cmd = NL80211_CMD_ASSOCIATE,
.doit = nl80211_associate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEAUTHENTICATE,
.doit = nl80211_deauthenticate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISASSOCIATE,
.doit = nl80211_disassociate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_JOIN_IBSS,
.doit = nl80211_join_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_LEAVE_IBSS,
.doit = nl80211_leave_ibss,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_NL80211_TESTMODE
{
.cmd = NL80211_CMD_TESTMODE,
.doit = nl80211_testmode_do,
.dumpit = nl80211_testmode_dump,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
#endif
{
.cmd = NL80211_CMD_CONNECT,
.doit = nl80211_connect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DISCONNECT,
.doit = nl80211_disconnect,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WIPHY_NETNS,
.doit = nl80211_wiphy_netns,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_SURVEY,
.policy = nl80211_policy,
.dumpit = nl80211_dump_survey,
},
{
.cmd = NL80211_CMD_SET_PMKSA,
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_PMKSA,
.doit = nl80211_setdel_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FLUSH_PMKSA,
.doit = nl80211_flush_pmksa,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
.doit = nl80211_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
.doit = nl80211_cancel_remain_on_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
.doit = nl80211_set_tx_bitrate_mask,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REGISTER_FRAME,
.doit = nl80211_register_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FRAME,
.doit = nl80211_tx_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
.doit = nl80211_tx_mgmt_cancel_wait,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_POWER_SAVE,
.doit = nl80211_set_power_save,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_POWER_SAVE,
.doit = nl80211_get_power_save,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CQM,
.doit = nl80211_set_cqm,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_CHANNEL,
.doit = nl80211_set_channel,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WDS_PEER,
.doit = nl80211_set_wds_peer,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_JOIN_MESH,
.doit = nl80211_join_mesh,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_LEAVE_MESH,
.doit = nl80211_leave_mesh,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_JOIN_OCB,
.doit = nl80211_join_ocb,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_LEAVE_OCB,
.doit = nl80211_leave_ocb,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
#ifdef CONFIG_PM
{
.cmd = NL80211_CMD_GET_WOWLAN,
.doit = nl80211_get_wowlan,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_WOWLAN,
.doit = nl80211_set_wowlan,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
#endif
{
.cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
.doit = nl80211_set_rekey_data,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
.cmd = NL80211_CMD_TDLS_MGMT,
.doit = nl80211_tdls_mgmt,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TDLS_OPER,
.doit = nl80211_tdls_oper,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_UNEXPECTED_FRAME,
.doit = nl80211_register_unexpected_frame,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_PROBE_CLIENT,
.doit = nl80211_probe_client,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_REGISTER_BEACONS,
.doit = nl80211_register_beacons,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_NOACK_MAP,
.doit = nl80211_set_noack_map,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_START_P2P_DEVICE,
.doit = nl80211_start_p2p_device,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_STOP_P2P_DEVICE,
.doit = nl80211_stop_p2p_device,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MCAST_RATE,
.doit = nl80211_set_mcast_rate,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_MAC_ACL,
.doit = nl80211_set_mac_acl,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_RADAR_DETECT,
.doit = nl80211_start_radar_detection,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
.doit = nl80211_get_protocol_features,
.policy = nl80211_policy,
},
{
.cmd = NL80211_CMD_UPDATE_FT_IES,
.doit = nl80211_update_ft_ies,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_START,
.doit = nl80211_crit_protocol_start,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
.doit = nl80211_crit_protocol_stop,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_COALESCE,
.doit = nl80211_get_coalesce,
.policy = nl80211_policy,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_COALESCE,
.doit = nl80211_set_coalesce,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_CHANNEL_SWITCH,
.doit = nl80211_channel_switch,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_VENDOR,
.doit = nl80211_vendor_cmd,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_SET_QOS_MAP,
.doit = nl80211_set_qos_map,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_ADD_TX_TS,
.doit = nl80211_add_tx_ts,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_DEL_TX_TS,
.doit = nl80211_del_tx_ts,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
.doit = nl80211_tdls_channel_switch,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
.doit = nl80211_tdls_cancel_channel_switch,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
};
/* notification functions */
void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
enum nl80211_commands cmd)
{
struct sk_buff *msg;
struct nl80211_dump_wiphy_state state = {};
WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
cmd != NL80211_CMD_DEL_WIPHY);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_CONFIG, GFP_KERNEL);
}
static int nl80211_add_scan_req(struct sk_buff *msg,
struct cfg80211_registered_device *rdev)
{
struct cfg80211_scan_request *req = rdev->scan_req;
struct nlattr *nest;
int i;
if (WARN_ON(!req))
return 0;
nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
if (!nest)
goto nla_put_failure;
for (i = 0; i < req->n_ssids; i++) {
if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
goto nla_put_failure;
}
nla_nest_end(msg, nest);
nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
if (!nest)
goto nla_put_failure;
for (i = 0; i < req->n_channels; i++) {
if (nla_put_u32(msg, i, req->channels[i]->center_freq))
goto nla_put_failure;
}
nla_nest_end(msg, nest);
if (req->ie &&
nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
goto nla_put_failure;
if (req->flags &&
nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
goto nla_put_failure;
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_send_scan_msg(struct sk_buff *msg,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
u32 portid, u32 seq, int flags,
u32 cmd)
{
void *hdr;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto nla_put_failure;
/* ignore errors and send incomplete event anyway */
nl80211_add_scan_req(msg, rdev);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int
nl80211_send_sched_scan_msg(struct sk_buff *msg,
struct cfg80211_registered_device *rdev,
struct net_device *netdev,
u32 portid, u32 seq, int flags, u32 cmd)
{
void *hdr;
hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
goto nla_put_failure;
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
NL80211_CMD_TRIGGER_SCAN) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, bool aborted)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return NULL;
if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
aborted ? NL80211_CMD_SCAN_ABORTED :
NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
nlmsg_free(msg);
return NULL;
}
return msg;
}
void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
struct sk_buff *msg)
{
if (!msg)
return;
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
struct net_device *netdev)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u32 cmd)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_SCAN, GFP_KERNEL);
}
/*
* This can happen on global regulatory changes or device specific settings
* based on custom world regulatory domains.
*/
void nl80211_send_reg_change_event(struct regulatory_request *request)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
if (!hdr) {
nlmsg_free(msg);
return;
}
/* Userspace can always count this one always being set */
if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
goto nla_put_failure;
if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_WORLD))
goto nla_put_failure;
} else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_CUSTOM_WORLD))
goto nla_put_failure;
} else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
request->intersect) {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_INTERSECTION))
goto nla_put_failure;
} else {
if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
NL80211_REGDOM_TYPE_COUNTRY) ||
nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
request->alpha2))
goto nla_put_failure;
}
if (request->wiphy_idx != WIPHY_IDX_INVALID &&
nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
goto nla_put_failure;
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(&nl80211_fam, msg, 0,
NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
rcu_read_unlock();
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *buf, size_t len,
enum nl80211_commands cmd, gfp_t gfp,
int uapsd_queues)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_FRAME, len, buf))
goto nla_put_failure;
if (uapsd_queues >= 0) {
struct nlattr *nla_wmm =
nla_nest_start(msg, NL80211_ATTR_STA_WME);
if (!nla_wmm)
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
uapsd_queues))
goto nla_put_failure;
nla_nest_end(msg, nla_wmm);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_AUTHENTICATE, gfp, -1);
}
void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp, int uapsd_queues)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
}
void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DEAUTHENTICATE, gfp, -1);
}
void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *buf,
size_t len, gfp_t gfp)
{
nl80211_send_mlme_event(rdev, netdev, buf, len,
NL80211_CMD_DISASSOCIATE, gfp, -1);
}
void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct ieee80211_mgmt *mgmt = (void *)buf;
u32 cmd;
if (WARN_ON(len < 2))
return;
if (ieee80211_is_deauth(mgmt->frame_control))
cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
else
cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
}
EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int cmd,
const u8 *addr, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
addr, gfp);
}
void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
gfp_t gfp)
{
nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
addr, gfp);
}
void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len,
u16 status, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
(req_ie &&
nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
(resp_ie &&
nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
const u8 *req_ie, size_t req_ie_len,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
(req_ie &&
nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
(resp_ie &&
nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u16 reason,
const u8 *ie, size_t ie_len, bool from_ap)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(from_ap && reason &&
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
(from_ap &&
nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
(ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
const u8* ie, u8 ie_len, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
return;
trace_cfg80211_notify_new_peer_candidate(dev, addr);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
(ie_len && ie &&
nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *addr,
enum nl80211_key_type key_type, int key_id,
const u8 *tsc, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
(addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
(key_id != -1 &&
nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
(tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
struct ieee80211_channel *channel_before,
struct ieee80211_channel *channel_after)
{
struct sk_buff *msg;
void *hdr;
struct nlattr *nl_freq;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
if (!hdr) {
nlmsg_free(msg);
return;
}
/*
* Since we are applying the beacon hint to a wiphy we know its
* wiphy_idx is valid
*/
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
goto nla_put_failure;
/* Before */
nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
if (!nl_freq)
goto nla_put_failure;
if (nl80211_msg_put_channel(msg, channel_before, false))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
/* After */
nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
if (!nl_freq)
goto nla_put_failure;
if (nl80211_msg_put_channel(msg, channel_after, false))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(&nl80211_fam, msg, 0,
NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
rcu_read_unlock();
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
static void nl80211_send_remain_on_chan_event(
int cmd, struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex)) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
NL80211_CHAN_NO_HT) ||
nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
goto nla_put_failure;
if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan,
duration, gfp);
}
EXPORT_SYMBOL(cfg80211_ready_on_channel);
void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan, 0, gfp);
}
EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
struct station_info *sinfo, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
trace_cfg80211_new_sta(dev, mac_addr, sinfo);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
if (nl80211_send_station(msg, 0, 0, 0,
rdev, dev, mac_addr, sinfo) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
}
EXPORT_SYMBOL(cfg80211_new_sta);
void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_del_sta(dev, mac_addr);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_del_sta);
void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
enum nl80211_connect_failed_reason reason,
gfp_t gfp)
{
struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_conn_failed);
static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
if (!nlportid)
return false;
msg = nlmsg_new(100, gfp);
if (!msg)
return true;
hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
if (!hdr) {
nlmsg_free(msg);
return true;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
return true;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
return true;
}
bool cfg80211_rx_spurious_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
bool ret;
trace_cfg80211_rx_spurious_frame(dev, addr);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
trace_cfg80211_return_bool(false);
return false;
}
ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
addr, gfp);
trace_cfg80211_return_bool(ret);
return ret;
}
EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
bool ret;
trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO &&
wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
trace_cfg80211_return_bool(false);
return false;
}
ret = __nl80211_unexpected_frame(dev,
NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
addr, gfp);
trace_cfg80211_return_bool(ret);
return ret;
}
EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u32 nlportid,
int freq, int sig_dbm,
const u8 *buf, size_t len, u32 flags, gfp_t gfp)
{
struct net_device *netdev = wdev->netdev;
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return -ENOMEM;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
if (!hdr) {
nlmsg_free(msg);
return -ENOMEM;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
netdev->ifindex)) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
(sig_dbm &&
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
(flags &&
nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
return -ENOBUFS;
}
void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
const u8 *buf, size_t len, bool ack, gfp_t gfp)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct net_device *netdev = wdev->netdev;
struct sk_buff *msg;
void *hdr;
trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
netdev->ifindex)) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
(ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
const char *mac, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
void **cb;
if (!msg)
return NULL;
cb = (void **)msg->cb;
cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
if (!cb[0]) {
nlmsg_free(msg);
return NULL;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
goto nla_put_failure;
if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
goto nla_put_failure;
cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
if (!cb[1])
goto nla_put_failure;
cb[2] = rdev;
return msg;
nla_put_failure:
nlmsg_free(msg);
return NULL;
}
static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
{
void **cb = (void **)msg->cb;
struct cfg80211_registered_device *rdev = cb[2];
nla_nest_end(msg, cb[1]);
genlmsg_end(msg, cb[0]);
memset(msg->cb, 0, sizeof(msg->cb));
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
}
void cfg80211_cqm_rssi_notify(struct net_device *dev,
enum nl80211_cqm_rssi_threshold_event rssi_event,
gfp_t gfp)
{
struct sk_buff *msg;
trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
return;
msg = cfg80211_prepare_cqm(dev, NULL, gfp);
if (!msg)
return;
if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
rssi_event))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
void cfg80211_cqm_txe_notify(struct net_device *dev,
const u8 *peer, u32 num_packets,
u32 rate, u32 intvl, gfp_t gfp)
{
struct sk_buff *msg;
msg = cfg80211_prepare_cqm(dev, peer, gfp);
if (!msg)
return;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
void cfg80211_cqm_pktloss_notify(struct net_device *dev,
const u8 *peer, u32 num_packets, gfp_t gfp)
{
struct sk_buff *msg;
trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
msg = cfg80211_prepare_cqm(dev, peer, gfp);
if (!msg)
return;
if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
{
struct sk_buff *msg;
msg = cfg80211_prepare_cqm(dev, NULL, gfp);
if (!msg)
return;
if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
goto nla_put_failure;
cfg80211_send_cqm(msg, gfp);
return;
nla_put_failure:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *rekey_attr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
goto nla_put_failure;
rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
if (!rekey_attr)
goto nla_put_failure;
if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
NL80211_REPLAY_CTR_LEN, replay_ctr))
goto nla_put_failure;
nla_nest_end(msg, rekey_attr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
const u8 *replay_ctr, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_gtk_rekey_notify(dev, bssid);
nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
}
EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
static void
nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, int index,
const u8 *bssid, bool preauth, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *attr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
goto nla_put_failure;
attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
if (!attr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
(preauth &&
nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
goto nla_put_failure;
nla_nest_end(msg, attr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
const u8 *bssid, bool preauth, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
}
EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_chan_def *chandef,
gfp_t gfp,
enum nl80211_commands notif,
u8 count)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
goto nla_put_failure;
if (nl80211_send_chandef(msg, chandef))
goto nla_put_failure;
if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
(nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_ch_switch_notify(struct net_device *dev,
struct cfg80211_chan_def *chandef)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_WDEV_LOCK(wdev);
trace_cfg80211_ch_switch_notify(dev, chandef);
wdev->chandef = *chandef;
wdev->preset_chandef = *chandef;
nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
NL80211_CMD_CH_SWITCH_NOTIFY, 0);
}
EXPORT_SYMBOL(cfg80211_ch_switch_notify);
void cfg80211_ch_switch_started_notify(struct net_device *dev,
struct cfg80211_chan_def *chandef,
u8 count)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
trace_cfg80211_ch_switch_started_notify(dev, chandef);
nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
}
EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
void
nl80211_radar_notify(struct cfg80211_registered_device *rdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event,
struct net_device *netdev, gfp_t gfp)
{
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
/* NOP and radar events don't need a netdev parameter */
if (netdev) {
struct wireless_dev *wdev = netdev->ieee80211_ptr;
if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto nla_put_failure;
}
if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
goto nla_put_failure;
if (nl80211_send_chandef(msg, chandef))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
u64 cookie, bool acked, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_probe_status(dev, addr, cookie, acked);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
(acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_probe_status);
void cfg80211_report_obss_beacon(struct wiphy *wiphy,
const u8 *frame, size_t len,
int freq, int sig_dbm)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
struct cfg80211_beacon_registration *reg;
trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry(reg, &rdev->beacon_registrations, list) {
msg = nlmsg_new(len + 100, GFP_ATOMIC);
if (!msg) {
spin_unlock_bh(&rdev->beacon_registrations_lock);
return;
}
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
(freq &&
nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
(sig_dbm &&
nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
nla_put(msg, NL80211_ATTR_FRAME, len, frame))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
}
spin_unlock_bh(&rdev->beacon_registrations_lock);
return;
nla_put_failure:
spin_unlock_bh(&rdev->beacon_registrations_lock);
if (hdr)
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_report_obss_beacon);
#ifdef CONFIG_PM
static int cfg80211_net_detect_results(struct sk_buff *msg,
struct cfg80211_wowlan_wakeup *wakeup)
{
struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
struct nlattr *nl_results, *nl_match, *nl_freqs;
int i, j;
nl_results = nla_nest_start(
msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
if (!nl_results)
return -EMSGSIZE;
for (i = 0; i < nd->n_matches; i++) {
struct cfg80211_wowlan_nd_match *match = nd->matches[i];
nl_match = nla_nest_start(msg, i);
if (!nl_match)
break;
/* The SSID attribute is optional in nl80211, but for
* simplicity reasons it's always present in the
* cfg80211 structure. If a driver can't pass the
* SSID, that needs to be changed. A zero length SSID
* is still a valid SSID (wildcard), so it cannot be
* used for this purpose.
*/
if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
match->ssid.ssid)) {
nla_nest_cancel(msg, nl_match);
goto out;
}
if (match->n_channels) {
nl_freqs = nla_nest_start(
msg, NL80211_ATTR_SCAN_FREQUENCIES);
if (!nl_freqs) {
nla_nest_cancel(msg, nl_match);
goto out;
}
for (j = 0; j < match->n_channels; j++) {
if (nla_put_u32(msg,
NL80211_ATTR_WIPHY_FREQ,
match->channels[j])) {
nla_nest_cancel(msg, nl_freqs);
nla_nest_cancel(msg, nl_match);
goto out;
}
}
nla_nest_end(msg, nl_freqs);
}
nla_nest_end(msg, nl_match);
}
out:
nla_nest_end(msg, nl_results);
return 0;
}
void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
struct cfg80211_wowlan_wakeup *wakeup,
gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
int size = 200;
trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
if (wakeup)
size += wakeup->packet_present_len;
msg = nlmsg_new(size, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
if (!hdr)
goto free_msg;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto free_msg;
if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
wdev->netdev->ifindex))
goto free_msg;
if (wakeup) {
struct nlattr *reasons;
reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
if (!reasons)
goto free_msg;
if (wakeup->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
goto free_msg;
if (wakeup->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
goto free_msg;
if (wakeup->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
goto free_msg;
if (wakeup->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
goto free_msg;
if (wakeup->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
goto free_msg;
if (wakeup->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
goto free_msg;
if (wakeup->pattern_idx >= 0 &&
nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
wakeup->pattern_idx))
goto free_msg;
if (wakeup->tcp_match &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
goto free_msg;
if (wakeup->tcp_connlost &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
goto free_msg;
if (wakeup->tcp_nomoretokens &&
nla_put_flag(msg,
NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
goto free_msg;
if (wakeup->packet) {
u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
if (!wakeup->packet_80211) {
pkt_attr =
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
len_attr =
NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
}
if (wakeup->packet_len &&
nla_put_u32(msg, len_attr, wakeup->packet_len))
goto free_msg;
if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
wakeup->packet))
goto free_msg;
}
if (wakeup->net_detect &&
cfg80211_net_detect_results(msg, wakeup))
goto free_msg;
nla_nest_end(msg, reasons);
}
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
free_msg:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
#endif
void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
enum nl80211_tdls_operation oper,
u16 reason_code, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
reason_code);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
if (!hdr) {
nlmsg_free(msg);
return;
}
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
(reason_code > 0 &&
nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_tdls_oper_request);
static int nl80211_netlink_notify(struct notifier_block * nb,
unsigned long state,
void *_notify)
{
struct netlink_notify *notify = _notify;
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
struct cfg80211_beacon_registration *reg, *tmp;
if (state != NETLINK_URELEASE)
return NOTIFY_DONE;
rcu_read_lock();
list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
bool schedule_destroy_work = false;
list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
cfg80211_mlme_unregister_socket(wdev, notify->portid);
if (wdev->owner_nlportid == notify->portid)
schedule_destroy_work = true;
}
spin_lock_bh(&rdev->beacon_registrations_lock);
list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
list) {
if (reg->nlportid == notify->portid) {
list_del(&reg->list);
kfree(reg);
break;
}
}
spin_unlock_bh(&rdev->beacon_registrations_lock);
if (schedule_destroy_work) {
struct cfg80211_iface_destroy *destroy;
destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
if (destroy) {
destroy->nlportid = notify->portid;
spin_lock(&rdev->destroy_list_lock);
list_add(&destroy->list, &rdev->destroy_list);
spin_unlock(&rdev->destroy_list_lock);
schedule_work(&rdev->destroy_work);
}
}
}
rcu_read_unlock();
return NOTIFY_OK;
}
static struct notifier_block nl80211_netlink_notifier = {
.notifier_call = nl80211_netlink_notify,
};
void cfg80211_ft_event(struct net_device *netdev,
struct cfg80211_ft_event_params *ft_event)
{
struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
trace_cfg80211_ft_event(wiphy, netdev, ft_event);
if (!ft_event->target_ap)
return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
if (!hdr)
goto out;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
goto out;
if (ft_event->ies &&
nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
goto out;
if (ft_event->ric_ies &&
nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
ft_event->ric_ies))
goto out;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
out:
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_ft_event);
void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
{
struct cfg80211_registered_device *rdev;
struct sk_buff *msg;
void *hdr;
u32 nlportid;
rdev = wiphy_to_rdev(wdev->wiphy);
if (!rdev->crit_proto_nlportid)
return;
nlportid = rdev->crit_proto_nlportid;
rdev->crit_proto_nlportid = 0;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
if (!hdr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
return;
nla_put_failure:
if (hdr)
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
void nl80211_send_ap_stopped(struct wireless_dev *wdev)
{
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct sk_buff *msg;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
if (!hdr)
goto out;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
goto out;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
NL80211_MCGRP_MLME, GFP_KERNEL);
return;
out:
nlmsg_free(msg);
}
/* initialisation/exit functions */
int nl80211_init(void)
{
int err;
err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
nl80211_mcgrps);
if (err)
return err;
err = netlink_register_notifier(&nl80211_netlink_notifier);
if (err)
goto err_out;
return 0;
err_out:
genl_unregister_family(&nl80211_fam);
return err;
}
void nl80211_exit(void)
{
netlink_unregister_notifier(&nl80211_netlink_notifier);
genl_unregister_family(&nl80211_fam);
}
Reference in New Issue View Git Blame Copy Permalink