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linux/net/wireless/nl80211.c
Johannes Berg 9caf036402 cfg80211: fix BSS struct IE access races 
When a BSS struct is updated, the IEs are currently
overwritten or freed. This can lead to races if some
other CPU is accessing the BSS struct and using the
IEs concurrently.

Fix this by always allocating the IEs in a new struct
that holds the data and length and protecting access
to this new struct with RCU.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-11-30 13:42:20 +01:00

9252 lines
241 KiB
C
Raw Blame History

/*
* This is the new netlink-based wireless configuration interface.
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
*/
#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 "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(struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info);
static void nl80211_post_doit(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", /* 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,
};
/* 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_cfg80211_lock();
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;
mutex_lock(&rdev->devlist_mtx);
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;
}
}
mutex_unlock(&rdev->devlist_mtx);
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_cfg80211_lock();
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 */
mutex_lock(&tmp->devlist_mtx);
list_for_each_entry(wdev, &tmp->wdev_list, list) {
if (wdev->identifier != (u32)wdev_id)
continue;
found = true;
break;
}
mutex_unlock(&tmp->devlist_mtx);
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_dev(
netdev->ieee80211_ptr->wiphy);
else
tmp = NULL;
dev_put(netdev);
/* 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.
* If successful, it returns non-NULL and also locks
* the driver's mutex!
*
* This means that you need to call cfg80211_unlock_rdev()
* before being allowed to acquire &cfg80211_mutex!
*
* This is necessary because we need to lock the global
* mutex to get an item off the list safely, and then
* we lock the rdev mutex so it doesn't go away under us.
*
* We don't want to keep cfg80211_mutex locked
* for all the time in order to allow requests on
* other interfaces to go through at the same time.
*
* 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)
{
struct cfg80211_registered_device *rdev;
mutex_lock(&cfg80211_mutex);
rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
/* if it is not an error we grab the lock on
* it to assure it won't be going away while
* we operate on it */
if (!IS_ERR(rdev))
mutex_lock(&rdev->mtx);
mutex_unlock(&cfg80211_mutex);
return rdev;
}
/* policy for the attributes */
static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[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_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_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 },
};
/* 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 },
};
/* 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 },
};
/* ifidx get helper */
static int nl80211_get_ifidx(struct netlink_callback *cb)
{
int res;
res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
nl80211_fam.attrbuf, nl80211_fam.maxattr,
nl80211_policy);
if (res)
return res;
if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
return -EINVAL;
res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
if (!res)
return -EINVAL;
return res;
}
static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
struct netlink_callback *cb,
struct cfg80211_registered_device **rdev,
struct net_device **dev)
{
int ifidx = cb->args[0];
int err;
if (!ifidx)
ifidx = nl80211_get_ifidx(cb);
if (ifidx < 0)
return ifidx;
cb->args[0] = ifidx;
rtnl_lock();
*dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
if (!*dev) {
err = -ENODEV;
goto out_rtnl;
}
*rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
if (IS_ERR(*rdev)) {
err = PTR_ERR(*rdev);
goto out_rtnl;
}
return 0;
out_rtnl:
rtnl_unlock();
return err;
}
static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
{
cfg80211_unlock_rdev(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)
{
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_PASSIVE_SCAN) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
goto nla_put_failure;
if ((chan->flags & IEEE80211_CHAN_RADAR) &&
nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
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:
if (!wdev->current_bss)
return -ENOLINK;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
if (wdev->sme_state != CFG80211_SME_CONNECTED)
return -ENOLINK;
break;
default:
return -EINVAL;
}
return 0;
}
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)
{
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;
nla_nest_end(msg, nl_combi);
}
nla_nest_end(msg, nl_combis);
return 0;
nla_put_failure:
return -ENOBUFS;
}
static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
struct cfg80211_registered_device *dev)
{
void *hdr;
struct nlattr *nl_bands, *nl_band;
struct nlattr *nl_freqs, *nl_freq;
struct nlattr *nl_rates, *nl_rate;
struct nlattr *nl_cmds;
enum ieee80211_band band;
struct ieee80211_channel *chan;
struct ieee80211_rate *rate;
int i;
const struct ieee80211_txrx_stypes *mgmt_stypes =
dev->wiphy.mgmt_stypes;
hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
if (!hdr)
return -1;
if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
nla_put_u32(msg, NL80211_ATTR_GENERATION,
cfg80211_rdev_list_generation) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
dev->wiphy.retry_short) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
dev->wiphy.retry_long) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
dev->wiphy.frag_threshold) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
dev->wiphy.rts_threshold) ||
nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
dev->wiphy.coverage_class) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
dev->wiphy.max_scan_ssids) ||
nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
dev->wiphy.max_sched_scan_ssids) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
dev->wiphy.max_scan_ie_len) ||
nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
dev->wiphy.max_sched_scan_ie_len) ||
nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
dev->wiphy.max_match_sets))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
goto nla_put_failure;
if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
sizeof(u32) * dev->wiphy.n_cipher_suites,
dev->wiphy.cipher_suites))
goto nla_put_failure;
if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
dev->wiphy.max_num_pmkids))
goto nla_put_failure;
if ((dev->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,
dev->wiphy.available_antennas_tx) ||
nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
dev->wiphy.available_antennas_rx))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
dev->wiphy.probe_resp_offload))
goto nla_put_failure;
if ((dev->wiphy.available_antennas_tx ||
dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
u32 tx_ant = 0, rx_ant = 0;
int res;
res = rdev_get_antenna(dev, &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;
}
}
if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
dev->wiphy.interface_modes))
goto nla_put_failure;
nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
if (!nl_bands)
goto nla_put_failure;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!dev->wiphy.bands[band])
continue;
nl_band = nla_nest_start(msg, band);
if (!nl_band)
goto nla_put_failure;
/* add HT info */
if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
&dev->wiphy.bands[band]->ht_cap.mcs) ||
nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
dev->wiphy.bands[band]->ht_cap.cap) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
dev->wiphy.bands[band]->ht_cap.ampdu_density)))
goto nla_put_failure;
/* add VHT info */
if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
&dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
dev->wiphy.bands[band]->vht_cap.cap)))
goto nla_put_failure;
/* add frequencies */
nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
if (!nl_freqs)
goto nla_put_failure;
for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
nl_freq = nla_nest_start(msg, i);
if (!nl_freq)
goto nla_put_failure;
chan = &dev->wiphy.bands[band]->channels[i];
if (nl80211_msg_put_channel(msg, chan))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
}
nla_nest_end(msg, nl_freqs);
/* add bitrates */
nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
if (!nl_rates)
goto nla_put_failure;
for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
nl_rate = nla_nest_start(msg, i);
if (!nl_rate)
goto nla_put_failure;
rate = &dev->wiphy.bands[band]->bitrates[i];
if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
rate->bitrate))
goto nla_put_failure;
if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
nla_put_flag(msg,
NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
goto nla_put_failure;
nla_nest_end(msg, nl_rate);
}
nla_nest_end(msg, nl_rates);
nla_nest_end(msg, nl_band);
}
nla_nest_end(msg, nl_bands);
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 (dev->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 (dev->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 (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
goto nla_put_failure;
}
if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
dev->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 (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
CMD(tdls_mgmt, TDLS_MGMT);
CMD(tdls_oper, TDLS_OPER);
}
if (dev->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 (dev->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
#undef CMD
if (dev->ops->connect || dev->ops->auth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
goto nla_put_failure;
}
if (dev->ops->disconnect || dev->ops->deauth) {
i++;
if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
goto nla_put_failure;
}
nla_nest_end(msg, nl_cmds);
if (dev->ops->remain_on_channel &&
(dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
dev->wiphy.max_remain_on_channel_duration))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
goto nla_put_failure;
if (mgmt_stypes) {
u16 stypes;
struct nlattr *nl_ftypes, *nl_ifs;
enum nl80211_iftype ift;
nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
if (!nl_ifs)
goto nla_put_failure;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start(msg, ift);
if (!nl_ftypes)
goto nla_put_failure;
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))
goto nla_put_failure;
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)
goto nla_put_failure;
for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
nl_ftypes = nla_nest_start(msg, ift);
if (!nl_ftypes)
goto nla_put_failure;
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))
goto nla_put_failure;
stypes >>= 1;
i++;
}
nla_nest_end(msg, nl_ftypes);
}
nla_nest_end(msg, nl_ifs);
}
#ifdef CONFIG_PM
if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
struct nlattr *nl_wowlan;
nl_wowlan = nla_nest_start(msg,
NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
if (!nl_wowlan)
goto nla_put_failure;
if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (dev->wiphy.wowlan.n_patterns) {
struct nl80211_wowlan_pattern_support pat = {
.max_patterns = dev->wiphy.wowlan.n_patterns,
.min_pattern_len =
dev->wiphy.wowlan.pattern_min_len,
.max_pattern_len =
dev->wiphy.wowlan.pattern_max_len,
};
if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
sizeof(pat), &pat))
goto nla_put_failure;
}
nla_nest_end(msg, nl_wowlan);
}
#endif
if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
dev->wiphy.software_iftypes))
goto nla_put_failure;
if (nl80211_put_iface_combinations(&dev->wiphy, msg))
goto nla_put_failure;
if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
dev->wiphy.ap_sme_capa))
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
dev->wiphy.features))
goto nla_put_failure;
if (dev->wiphy.ht_capa_mod_mask &&
nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
sizeof(*dev->wiphy.ht_capa_mod_mask),
dev->wiphy.ht_capa_mod_mask))
goto nla_put_failure;
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx = 0;
int start = cb->args[0];
struct cfg80211_registered_device *dev;
mutex_lock(&cfg80211_mutex);
list_for_each_entry(dev, &cfg80211_rdev_list, list) {
if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
continue;
if (++idx <= start)
continue;
if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
dev) < 0) {
idx--;
break;
}
}
mutex_unlock(&cfg80211_mutex);
cb->args[0] = idx;
return skb->len;
}
static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
{
struct sk_buff *msg;
struct cfg80211_registered_device *dev = info->user_ptr[0];
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 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;
return 0;
}
static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
struct genl_info *info)
{
struct cfg80211_chan_def chandef;
int result;
enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
if (wdev)
iftype = wdev->iftype;
if (!nl80211_can_set_dev_channel(wdev))
return -EOPNOTSUPP;
result = nl80211_parse_chandef(rdev, info, &chandef);
if (result)
return result;
mutex_lock(&rdev->devlist_mtx);
switch (iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
if (wdev->beacon_interval) {
result = -EBUSY;
break;
}
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
result = -EINVAL;
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;
}
mutex_unlock(&rdev->devlist_mtx);
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->ieee80211_ptr, 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;
/*
* 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!
*/
mutex_lock(&cfg80211_mutex);
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_dev(netdev->ieee80211_ptr->wiphy);
mutex_lock(&rdev->mtx);
} else
netdev = NULL;
}
if (!netdev) {
rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
info->attrs);
if (IS_ERR(rdev)) {
mutex_unlock(&cfg80211_mutex);
return PTR_ERR(rdev);
}
wdev = NULL;
netdev = NULL;
result = 0;
mutex_lock(&rdev->mtx);
} 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]));
mutex_unlock(&cfg80211_mutex);
if (result)
goto bad_res;
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) {
result = -EOPNOTSUPP;
goto bad_res;
}
if (!netdev) {
result = -EINVAL;
goto bad_res;
}
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
result = -EINVAL;
goto bad_res;
}
if (!netif_running(netdev)) {
result = -ENETDOWN;
goto bad_res;
}
nla_for_each_nested(nl_txq_params,
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
rem_txq_params) {
nla_parse(tb, NL80211_TXQ_ATTR_MAX,
nla_data(nl_txq_params),
nla_len(nl_txq_params),
txq_params_policy);
result = parse_txq_params(tb, &txq_params);
if (result)
goto bad_res;
result = rdev_set_txq_params(rdev, netdev,
&txq_params);
if (result)
goto bad_res;
}
}
if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
result = __nl80211_set_channel(rdev,
nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
info);
if (result)
goto bad_res;
}
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) {
result = -EOPNOTSUPP;
goto bad_res;
}
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)) {
result = -EINVAL;
goto bad_res;
}
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)
goto bad_res;
}
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) {
result = -EOPNOTSUPP;
goto bad_res;
}
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))) {
result = -EINVAL;
goto bad_res;
}
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)
goto bad_res;
}
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) {
result = -EINVAL;
goto bad_res;
}
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) {
result = -EINVAL;
goto bad_res;
}
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) {
result = -EINVAL;
goto bad_res;
}
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]) {
coverage_class = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
changed |= WIPHY_PARAM_COVERAGE_CLASS;
}
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) {
result = -EOPNOTSUPP;
goto bad_res;
}
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;
}
}
bad_res:
mutex_unlock(&rdev->mtx);
if (netdev)
dev_put(netdev);
return result;
}
static inline u64 wdev_id(struct wireless_dev *wdev)
{
return (u64)wdev->identifier |
((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
}
static int nl80211_send_chandef(struct sk_buff *msg,
struct cfg80211_chan_def *chandef)
{
WARN_ON(!cfg80211_chandef_valid(chandef));
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)
{
struct net_device *dev = wdev->netdev;
void *hdr;
hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
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;
mutex_lock(&cfg80211_mutex);
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;
mutex_lock(&rdev->devlist_mtx);
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) < 0) {
mutex_unlock(&rdev->devlist_mtx);
goto out;
}
if_idx++;
}
mutex_unlock(&rdev->devlist_mtx);
wp_idx++;
}
out:
mutex_unlock(&cfg80211_mutex);
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 *dev = 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,
dev, wdev) < 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 },
};
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 (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;
int err;
enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
u32 flags;
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 (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);
wdev = rdev_add_virtual_intf(rdev,
nla_data(info->attrs[NL80211_ATTR_IFNAME]),
type, err ? NULL : &flags, &params);
if (IS_ERR(wdev)) {
nlmsg_free(msg);
return PTR_ERR(wdev);
}
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);
mutex_lock(&rdev->devlist_mtx);
wdev->identifier = ++rdev->wdev_id;
list_add_rcu(&wdev->list, &rdev->wdev_list);
rdev->devlist_generation++;
mutex_unlock(&rdev->devlist_mtx);
break;
default:
break;
}
if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
rdev, wdev) < 0) {
nlmsg_free(msg);
return -ENOBUFS;
}
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];
if (!rdev->ops->del_virtual_intf)
return -EOPNOTSUPP;
/*
* 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;
return rdev_del_virtual_intf(rdev, wdev);
}
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 (IS_ERR(hdr))
return PTR_ERR(hdr);
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;
}
static int nl80211_parse_beacon(struct genl_info *info,
struct cfg80211_beacon_data *bcn)
{
bool haveinfo = false;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
return -EINVAL;
memset(bcn, 0, sizeof(*bcn));
if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
if (!bcn->head_len)
return -EINVAL;
haveinfo = true;
}
if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
bcn->tail_len =
nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
haveinfo = true;
}
if (!haveinfo)
return -EINVAL;
if (info->attrs[NL80211_ATTR_IE]) {
bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
}
if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
bcn->proberesp_ies =
nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
bcn->proberesp_ies_len =
nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
}
if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
bcn->assocresp_ies =
nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
bcn->assocresp_ies_len =
nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
}
if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
bcn->probe_resp =
nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
bcn->probe_resp_len =
nla_len(info->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;
mutex_lock(&rdev->devlist_mtx);
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;
}
mutex_unlock(&rdev->devlist_mtx);
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, &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))
return -EINVAL;
mutex_lock(&rdev->devlist_mtx);
err = cfg80211_can_use_chan(rdev, wdev, params.chandef.chan,
CHAN_MODE_SHARED);
mutex_unlock(&rdev->devlist_mtx);
if (err)
return err;
err = rdev_start_ap(rdev, dev, &params);
if (!err) {
wdev->preset_chandef = params.chandef;
wdev->beacon_interval = params.beacon_interval;
wdev->channel = params.chandef.chan;
wdev->ssid_len = params.ssid_len;
memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
}
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, &params);
if (err)
return err;
return rdev_change_beacon(rdev, dev, &params);
}
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);
}
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;
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 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) &&
nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
sinfo->rx_bytes))
goto nla_put_failure;
if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
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_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_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_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 *dev;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
int sta_idx = cb->args[1];
int err;
err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
if (err)
return err;
if (!dev->ops->dump_station) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
memset(&sinfo, 0, sizeof(sinfo));
err = rdev_dump_station(dev, 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,
dev, netdev, mac_addr,
&sinfo) < 0)
goto out;
sta_idx++;
}
out:
cb->args[1] = sta_idx;
err = skb->len;
out_err:
nl80211_finish_netdev_dump(dev);
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);
}
/*
* 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 (!netif_running(v)) {
ret = -ENETDOWN;
goto error;
}
return v;
error:
dev_put(v);
return ERR_PTR(ret);
}
static int nl80211_set_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));
params.listen_interval = -1;
params.plink_state = -1;
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_LISTEN_INTERVAL])
params.listen_interval =
nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
params.ht_capa =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
if (!rdev->ops->change_station)
return -EOPNOTSUPP;
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 (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
params.plink_state =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
/* disallow mesh-specific things */
if (params.plink_action)
return -EINVAL;
/* 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);
/* accept only the listed bits */
if (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)))
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_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
/*
* Don't allow userspace to change the TDLS_PEER flag,
* but silently ignore attempts to change it since we
* don't have state here to verify that it doesn't try
* to change the flag.
*/
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
/* fall through */
case NL80211_IFTYPE_ADHOC:
/* disallow things sta doesn't support */
if (params.plink_action)
return -EINVAL;
if (params.ht_capa)
return -EINVAL;
if (params.listen_interval >= 0)
return -EINVAL;
/* reject any changes other than AUTHORIZED */
if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
return -EINVAL;
break;
case NL80211_IFTYPE_MESH_POINT:
/* disallow things mesh doesn't support */
if (params.vlan)
return -EINVAL;
if (params.ht_capa)
return -EINVAL;
if (params.listen_interval >= 0)
return -EINVAL;
/*
* No special handling for TDLS here -- the userspace
* mesh code doesn't have this bug.
*/
if (params.sta_flags_mask &
~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHORIZED)))
return -EINVAL;
break;
default:
return -EOPNOTSUPP;
}
/* be aware of params.vlan when changing code here */
err = rdev_change_station(rdev, dev, mac_addr, &params);
if (params.vlan)
dev_put(params.vlan);
return err;
}
static struct nla_policy
nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
[NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
[NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
};
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 (!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])
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]);
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_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_STA_PLINK_ACTION])
params.plink_action =
nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
if (!rdev->ops->add_station)
return -EOPNOTSUPP;
if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
return -EINVAL;
switch (dev->ieee80211_ptr->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
/* parse WME attributes if sta is WME capable */
if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
info->attrs[NL80211_ATTR_STA_WME]) {
struct nlattr *tb[NL80211_STA_WME_MAX + 1];
struct nlattr *nla;
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;
}
/* TDLS peers cannot be added */
if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
return -EINVAL;
/* but don't bother the driver with it */
params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
/* 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:
/* TDLS peers cannot be added */
if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
return -EINVAL;
break;
case NL80211_IFTYPE_STATION:
/* 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;
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];
u8 *mac_addr = NULL;
if (info->attrs[NL80211_ATTR_MAC])
mac_addr = 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;
return rdev_del_station(rdev, dev, mac_addr);
}
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_STATION);
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 *dev;
struct net_device *netdev;
u8 dst[ETH_ALEN];
u8 next_hop[ETH_ALEN];
int path_idx = cb->args[1];
int err;
err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
if (err)
return err;
if (!dev->ops->dump_mpath) {
err = -EOPNOTSUPP;
goto out_err;
}
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
err = -EOPNOTSUPP;
goto out_err;
}
while (1) {
err = rdev_dump_mpath(dev, 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,
netdev, dst, next_hop,
&pinfo) < 0)
goto out;
path_idx++;
}
out:
cb->args[1] = path_idx;
err = skb->len;
out_err:
nl80211_finish_netdev_dump(dev);
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_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 bss_parameters params;
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;
return rdev_change_bss(rdev, dev, &params);
}
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 },
};
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]);
return 0;
}
static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
{
int r;
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.
*/
mutex_lock(&cfg80211_mutex);
if (unlikely(!cfg80211_regdomain)) {
mutex_unlock(&cfg80211_mutex);
return -EINPROGRESS;
}
mutex_unlock(&cfg80211_mutex);
if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
return -EINVAL;
data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
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:
break;
default:
return -EINVAL;
}
r = regulatory_hint_user(data, user_reg_hint_type);
return r;
}
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))
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 },
};
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_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(table, cfg, param, mask, attr_num, nla_fn) \
do {\
if (table[attr_num]) {\
cfg->param = nla_fn(table[attr_num]); \
mask |= (1 << (attr_num - 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,
mask, NL80211_MESHCONF_RETRY_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
mask, NL80211_MESHCONF_MAX_PEER_LINKS,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
mask, NL80211_MESHCONF_MAX_RETRIES,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
mask, NL80211_MESHCONF_TTL, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
mask, NL80211_MESHCONF_ELEMENT_TTL,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPnetDiameterTraversalTime, mask,
NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
NL80211_MESHCONF_HWMP_RANN_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshGateAnnouncementProtocol, mask,
NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
mask, NL80211_MESHCONF_FORWARDING,
nla_get_u8);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
mask, NL80211_MESHCONF_RSSI_THRESHOLD,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
mask, NL80211_MESHCONF_HT_OPMODE,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
mask,
NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
nla_get_u32);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
nla_get_u16);
FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
dot11MeshHWMPconfirmationInterval, mask,
NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
nla_get_u16);
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 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);
}
setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
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)
{
struct sk_buff *msg;
void *hdr = NULL;
struct nlattr *nl_reg_rules;
unsigned int i;
int err = -EINVAL;
mutex_lock(&cfg80211_mutex);
if (!cfg80211_regdomain)
goto out;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
err = -ENOBUFS;
goto out;
}
hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
NL80211_CMD_GET_REG);
if (!hdr)
goto put_failure;
if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
cfg80211_regdomain->alpha2) ||
(cfg80211_regdomain->dfs_region &&
nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
cfg80211_regdomain->dfs_region)))
goto nla_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;
nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
if (!nl_reg_rules)
goto nla_put_failure;
for (i = 0; i < cfg80211_regdomain->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;
reg_rule = &cfg80211_regdomain->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;
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,
freq_range->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))
goto nla_put_failure;
nla_nest_end(msg, nl_reg_rule);
}
nla_nest_end(msg, nl_reg_rules);
genlmsg_end(msg, hdr);
err = genlmsg_reply(msg, info);
goto out;
nla_put_failure:
genlmsg_cancel(msg, hdr);
put_failure:
nlmsg_free(msg);
err = -EMSGSIZE;
out:
mutex_unlock(&cfg80211_mutex);
return err;
}
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 = NULL;
int rem_reg_rules = 0, r = 0;
u32 num_rules = 0, rule_idx = 0, size_of_regd;
u8 dfs_region = 0;
struct ieee80211_regdomain *rd = NULL;
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;
}
mutex_lock(&cfg80211_mutex);
if (!reg_is_valid_request(alpha2)) {
r = -EINVAL;
goto bad_reg;
}
size_of_regd = sizeof(struct ieee80211_regdomain) +
(num_rules * sizeof(struct ieee80211_reg_rule));
rd = kzalloc(size_of_regd, GFP_KERNEL);
if (!rd) {
r = -ENOMEM;
goto bad_reg;
}
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) {
nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
nla_data(nl_reg_rule), nla_len(nl_reg_rule),
reg_rule_policy);
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;
}
}
BUG_ON(rule_idx != num_rules);
r = set_regdom(rd);
mutex_unlock(&cfg80211_mutex);
return r;
bad_reg:
mutex_unlock(&cfg80211_mutex);
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_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)
return -EBUSY;
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
if (!n_channels)
return -EINVAL;
} else {
enum ieee80211_band band;
n_channels = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++)
if (wiphy->bands[band])
n_channels += wiphy->bands[band]->n_channels;
}
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)
return -EINVAL;
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)
return -EINVAL;
request = kzalloc(sizeof(*request)
+ sizeof(*request->ssids) * n_ssids
+ sizeof(*request->channels) * n_channels
+ ie_len, GFP_KERNEL);
if (!request)
return -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);
}
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;
}
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)) ||
((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
!(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
err = -EOPNOTSUPP;
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);
}
return err;
}
static int nl80211_start_sched_scan(struct sk_buff *skb,
struct genl_info *info)
{
struct cfg80211_sched_scan_request *request;
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct nlattr *attr;
struct wiphy *wiphy;
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];
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
!rdev->ops->sched_scan_start)
return -EOPNOTSUPP;
if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
return -EINVAL;
if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
return -EINVAL;
interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
if (interval == 0)
return -EINVAL;
wiphy = &rdev->wiphy;
if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
n_channels = validate_scan_freqs(
info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
if (!n_channels)
return -EINVAL;
} else {
n_channels = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++)
if (wiphy->bands[band])
n_channels += wiphy->bands[band]->n_channels;
}
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_sched_scan_ssids)
return -EINVAL;
if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
nla_for_each_nested(attr,
info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp)
n_match_sets++;
if (n_match_sets > wiphy->max_match_sets)
return -EINVAL;
if (info->attrs[NL80211_ATTR_IE])
ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
else
ie_len = 0;
if (ie_len > wiphy->max_sched_scan_ie_len)
return -EINVAL;
mutex_lock(&rdev->sched_scan_mtx);
if (rdev->sched_scan_req) {
err = -EINPROGRESS;
goto out;
}
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) {
err = -ENOMEM;
goto out;
}
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 (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 {
/* 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++;
}
}
i = 0;
if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
nla_for_each_nested(attr,
info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
tmp) {
struct nlattr *ssid, *rssi;
nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
nla_data(attr), nla_len(attr),
nl80211_match_policy);
ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
if (ssid) {
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);
}
rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
if (rssi)
request->rssi_thold = nla_get_u32(rssi);
else
request->rssi_thold =
NL80211_SCAN_RSSI_THOLD_OFF;
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);
}
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)) ||
((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
!(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
err = -EOPNOTSUPP;
goto out_free;
}
}
request->dev = dev;
request->wiphy = &rdev->wiphy;
request->interval = interval;
request->scan_start = jiffies;
err = rdev_sched_scan_start(rdev, dev, request);
if (!err) {
rdev->sched_scan_req = request;
nl80211_send_sched_scan(rdev, dev,
NL80211_CMD_START_SCHED_SCAN);
goto out;
}
out_free:
kfree(request);
out:
mutex_unlock(&rdev->sched_scan_mtx);
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];
int err;
if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
!rdev->ops->sched_scan_stop)
return -EOPNOTSUPP;
mutex_lock(&rdev->sched_scan_mtx);
err = __cfg80211_stop_sched_scan(rdev, false);
mutex_unlock(&rdev->sched_scan_mtx);
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) ||
nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
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();
ies = rcu_dereference(res->ies);
if (ies && ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
ies->len, ies->data)) {
rcu_read_unlock();
goto nla_put_failure;
}
ies = rcu_dereference(res->beacon_ies);
if (ies && ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
ies->len, ies->data)) {
rcu_read_unlock();
goto nla_put_failure;
}
rcu_read_unlock();
if (res->tsf &&
nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
goto nla_put_failure;
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_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);
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 net_device *dev;
struct cfg80211_internal_bss *scan;
struct wireless_dev *wdev;
int start = cb->args[1], idx = 0;
int err;
err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
if (err)
return err;
wdev = dev->ieee80211_ptr;
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[1] = idx;
nl80211_finish_netdev_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 *dev;
struct net_device *netdev;
int survey_idx = cb->args[1];
int res;
res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
if (res)
return res;
if (!dev->ops->dump_survey) {
res = -EOPNOTSUPP;
goto out_err;
}
while (1) {
struct ieee80211_channel *chan;
res = rdev_dump_survey(dev, 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;
}
chan = ieee80211_get_channel(&dev->wiphy,
survey.channel->center_freq);
if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
survey_idx++;
continue;
}
if (nl80211_send_survey(skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
netdev,
&survey) < 0)
goto out;
survey_idx++;
}
out:
cb->args[1] = survey_idx;
res = skb->len;
out_err:
nl80211_finish_netdev_dump(dev);
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 = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
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;
return 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);
}
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 cfg80211_crypto_settings crypto;
struct ieee80211_channel *chan;
const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
int err, ssid_len, ie_len = 0;
bool use_mfp = false;
u32 flags = 0;
struct ieee80211_ht_cap *ht_capa = NULL;
struct ieee80211_ht_cap *ht_capa_mask = NULL;
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 = ieee80211_get_channel(&rdev->wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
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]);
}
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)
use_mfp = true;
else if (mfp != NL80211_MFP_NO)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_PREV_BSSID])
prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
flags |= ASSOC_REQ_DISABLE_HT;
if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
ht_capa_mask =
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
if (!ht_capa_mask)
return -EINVAL;
ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
}
err = nl80211_crypto_settings(rdev, info, &crypto, 1);
if (!err)
err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
ssid, ssid_len, ie, ie_len, use_mfp,
&crypto, flags, ht_capa,
ht_capa_mask);
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;
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];
return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
}
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;
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];
return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
local_state_change);
}
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))
return -EINVAL;
if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
return -EINVAL;
if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
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_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]);
err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree(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;
}
#ifdef CONFIG_NL80211_TESTMODE
static struct genl_multicast_group nl80211_testmode_mcgrp = {
.name = "testmode",
};
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
int err;
if (!info->attrs[NL80211_ATTR_TESTDATA])
return -EINVAL;
err = -EOPNOTSUPP;
if (rdev->ops->testmode_cmd) {
rdev->testmode_info = info;
err = rdev_testmode_cmd(rdev,
nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
rdev->testmode_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;
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)
return err;
mutex_lock(&cfg80211_mutex);
rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
nl80211_fam.attrbuf);
if (IS_ERR(rdev)) {
mutex_unlock(&cfg80211_mutex);
return PTR_ERR(rdev);
}
phy_idx = rdev->wiphy_idx;
rdev = NULL;
mutex_unlock(&cfg80211_mutex);
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]);
}
mutex_lock(&cfg80211_mutex);
rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
if (!rdev) {
mutex_unlock(&cfg80211_mutex);
return -ENOENT;
}
cfg80211_lock_rdev(rdev);
mutex_unlock(&cfg80211_mutex);
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 (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:
cfg80211_unlock_rdev(rdev);
return err;
}
static struct sk_buff *
__cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
int approxlen, u32 portid, u32 seq, 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, NL80211_CMD_TESTMODE);
if (!hdr) {
kfree_skb(skb);
return NULL;
}
if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
goto nla_put_failure;
data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
((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_testmode_alloc_reply_skb(struct wiphy *wiphy,
int approxlen)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
if (WARN_ON(!rdev->testmode_info))
return NULL;
return __cfg80211_testmode_alloc_skb(rdev, approxlen,
rdev->testmode_info->snd_portid,
rdev->testmode_info->snd_seq,
GFP_KERNEL);
}
EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
int cfg80211_testmode_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];
if (WARN_ON(!rdev->testmode_info)) {
kfree_skb(skb);
return -EINVAL;
}
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
return genlmsg_reply(skb, rdev->testmode_info);
}
EXPORT_SYMBOL(cfg80211_testmode_reply);
struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
int approxlen, gfp_t gfp)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
}
EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
{
void *hdr = ((void **)skb->cb)[1];
struct nlattr *data = ((void **)skb->cb)[2];
nla_nest_end(skb, data);
genlmsg_end(skb, hdr);
genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
}
EXPORT_SYMBOL(cfg80211_testmode_event);
#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]);
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_WIPHY_FREQ]) {
connect.channel =
ieee80211_get_channel(wiphy,
nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
if (!connect.channel ||
connect.channel->flags & IEEE80211_CHAN_DISABLED)
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]) {
kfree(connkeys);
return -EINVAL;
}
memcpy(&connect.ht_capa,
nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
sizeof(connect.ht_capa));
}
err = cfg80211_connect(rdev, dev, &connect, connkeys);
if (err)
kfree(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;
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;
return cfg80211_disconnect(rdev, dev, reason, true);
}
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;
u16 status_code;
u8 *peer;
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]);
return rdev_tdls_mgmt(rdev, dev, peer, action_code,
dialog_token, status_code,
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 (IS_ERR(hdr)) {
err = PTR_ERR(hdr);
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 const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
[NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_RATES },
[NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
.len = NL80211_MAX_SUPP_HT_RATES },
};
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;
if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
return -EINVAL;
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];
mask.control[i].legacy =
sband ? (1 << sband->n_bitrates) - 1 : 0;
if (sband)
memcpy(mask.control[i].mcs,
sband->ht_cap.mcs.rx_mask,
sizeof(mask.control[i].mcs));
else
memset(mask.control[i].mcs, 0,
sizeof(mask.control[i].mcs));
}
/*
* 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);
if (band < 0 || band >= IEEE80211_NUM_BANDS)
return -EINVAL;
sband = rdev->wiphy.bands[band];
if (sband == NULL)
return -EINVAL;
nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
nla_len(tx_rates), nl80211_txattr_policy);
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_MCS]) {
if (!ht_rateset_to_mask(
sband,
nla_data(tb[NL80211_TXRATE_MCS]),
nla_len(tb[NL80211_TXRATE_MCS]),
mask.control[band].mcs))
return -EINVAL;
}
if (mask.control[band].legacy == 0) {
/* don't allow empty legacy rates if HT
* is not even supported. */
if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
return -EINVAL;
for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
if (mask.control[band].mcs[i])
break;
/* legacy and mcs rates may not be both empty */
if (i == IEEE80211_HT_MCS_MASK_LEN)
return -EINVAL;
}
}
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;
unsigned int wait = 0;
bool offchan, no_cck, dont_wait_for_ack;
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_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;
}
if (info->attrs[NL80211_ATTR_DURATION]) {
if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
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 (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
wait > rdev->wiphy.max_remain_on_channel_duration)
return -EINVAL;
}
offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
return -EINVAL;
no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
err = nl80211_parse_chandef(rdev, info, &chandef);
if (err)
return err;
if (!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 (IS_ERR(hdr)) {
err = PTR_ERR(hdr);
goto free_msg;
}
}
err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
nla_data(info->attrs[NL80211_ATTR_FRAME]),
nla_len(info->attrs[NL80211_ATTR_FRAME]),
no_cck, dont_wait_for_ack, &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 struct nla_policy
nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
[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 wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
return -EINVAL;
wdev = dev->ieee80211_ptr;
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 wireless_dev *wdev;
struct net_device *dev = info->user_ptr[1];
if (threshold > 0)
return -EINVAL;
wdev = dev->ieee80211_ptr;
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) {
err = -EINVAL;
goto out;
}
err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
nl80211_attr_cqm_policy);
if (err)
goto out;
if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
s32 threshold;
u32 hysteresis;
threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
} else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
u32 rate, pkts, intvl;
rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
} else
err = -EINVAL;
out:
return err;
}
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_MESH_SETUP]) {
/* parse additional setup parameters if given */
err = nl80211_parse_mesh_setup(info, &setup);
if (err)
return err;
}
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;
}
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_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;
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
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_WOWLAN);
if (!hdr)
goto nla_put_failure;
if (rdev->wowlan) {
struct nlattr *nl_wowlan;
nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
if (!nl_wowlan)
goto nla_put_failure;
if ((rdev->wowlan->any &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
(rdev->wowlan->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
(rdev->wowlan->magic_pkt &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
(rdev->wowlan->gtk_rekey_failure &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
(rdev->wowlan->eap_identity_req &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
(rdev->wowlan->four_way_handshake &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
(rdev->wowlan->rfkill_release &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
goto nla_put_failure;
if (rdev->wowlan->n_patterns) {
struct nlattr *nl_pats, *nl_pat;
int i, pat_len;
nl_pats = nla_nest_start(msg,
NL80211_WOWLAN_TRIG_PKT_PATTERN);
if (!nl_pats)
goto nla_put_failure;
for (i = 0; i < rdev->wowlan->n_patterns; i++) {
nl_pat = nla_nest_start(msg, i + 1);
if (!nl_pat)
goto nla_put_failure;
pat_len = rdev->wowlan->patterns[i].pattern_len;
if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
DIV_ROUND_UP(pat_len, 8),
rdev->wowlan->patterns[i].mask) ||
nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
pat_len,
rdev->wowlan->patterns[i].pattern))
goto nla_put_failure;
nla_nest_end(msg, nl_pat);
}
nla_nest_end(msg, nl_pats);
}
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_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;
struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
int err, i;
bool prev_enabled = rdev->wowlan;
if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
return -EOPNOTSUPP;
if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
cfg80211_rdev_free_wowlan(rdev);
rdev->wowlan = 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;
struct nlattr *pat_tb[NUM_NL80211_WOWLAN_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) {
nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
nla_data(pat), nla_len(pat), NULL);
err = -EINVAL;
if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
!pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
goto error;
pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
mask_len = DIV_ROUND_UP(pat_len, 8);
if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
mask_len)
goto error;
if (pat_len > wowlan->pattern_max_len ||
pat_len < wowlan->pattern_min_len)
goto error;
new_triggers.patterns[i].mask =
kmalloc(mask_len + pat_len, GFP_KERNEL);
if (!new_triggers.patterns[i].mask) {
err = -ENOMEM;
goto error;
}
new_triggers.patterns[i].pattern =
new_triggers.patterns[i].mask + mask_len;
memcpy(new_triggers.patterns[i].mask,
nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
mask_len);
new_triggers.patterns[i].pattern_len = pat_len;
memcpy(new_triggers.patterns[i].pattern,
nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
pat_len);
i++;
}
}
ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
if (!ntrig) {
err = -ENOMEM;
goto error;
}
cfg80211_rdev_free_wowlan(rdev);
rdev->wowlan = ntrig;
set_wakeup:
if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
rdev_set_wakeup(rdev, rdev->wowlan);
return 0;
error:
for (i = 0; i < new_triggers.n_patterns; i++)
kfree(new_triggers.patterns[i].mask);
kfree(new_triggers.patterns);
return err;
}
#endif
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;
memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
NL80211_KEK_LEN);
memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
NL80211_KCK_LEN);
memcpy(rekey_data.replay_ctr,
nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
NL80211_REPLAY_CTR_LEN);
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 (IS_ERR(hdr)) {
err = PTR_ERR(hdr);
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;
mutex_lock(&rdev->devlist_mtx);
err = cfg80211_can_add_interface(rdev, wdev->iftype);
mutex_unlock(&rdev->devlist_mtx);
if (err)
return err;
err = rdev_start_p2p_device(rdev, wdev);
if (err)
return err;
wdev->p2p_started = true;
mutex_lock(&rdev->devlist_mtx);
rdev->opencount++;
mutex_unlock(&rdev->devlist_mtx);
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;
if (!wdev->p2p_started)
return 0;
rdev_stop_p2p_device(rdev, wdev);
wdev->p2p_started = false;
mutex_lock(&rdev->devlist_mtx);
rdev->opencount--;
mutex_unlock(&rdev->devlist_mtx);
if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
rdev->scan_req->aborted = true;
___cfg80211_scan_done(rdev, true);
}
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)
static int nl80211_pre_doit(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) {
mutex_lock(&cfg80211_mutex);
wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
info->attrs);
if (IS_ERR(wdev)) {
mutex_unlock(&cfg80211_mutex);
if (rtnl)
rtnl_unlock();
return PTR_ERR(wdev);
}
dev = wdev->netdev;
rdev = wiphy_to_dev(wdev->wiphy);
if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
if (!dev) {
mutex_unlock(&cfg80211_mutex);
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)) {
mutex_unlock(&cfg80211_mutex);
if (rtnl)
rtnl_unlock();
return -ENETDOWN;
}
dev_hold(dev);
} else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
if (!wdev->p2p_started) {
mutex_unlock(&cfg80211_mutex);
if (rtnl)
rtnl_unlock();
return -ENETDOWN;
}
}
cfg80211_lock_rdev(rdev);
mutex_unlock(&cfg80211_mutex);
info->user_ptr[0] = rdev;
}
return 0;
}
static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info)
{
if (info->user_ptr[0])
cfg80211_unlock_rdev(info->user_ptr[0]);
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();
}
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
.doit = nl80211_get_wiphy,
.dumpit = nl80211_dump_wiphy,
.policy = nl80211_policy,
/* can be retrieved by unprivileged users */
.internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.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,
},
{
.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,
},
{
.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,
},
{
.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_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,
/* can be retrieved by unprivileged users */
},
{
.cmd = NL80211_CMD_SET_REG,
.doit = nl80211_set_reg,
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
{
.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,
},
{
.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,
},
#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,
},
{
.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,
},
};
static struct genl_multicast_group nl80211_mlme_mcgrp = {
.name = "mlme",
};
/* multicast groups */
static struct genl_multicast_group nl80211_config_mcgrp = {
.name = "config",
};
static struct genl_multicast_group nl80211_scan_mcgrp = {
.name = "scan",
};
static struct genl_multicast_group nl80211_regulatory_mcgrp = {
.name = "regulatory",
};
/* notification functions */
void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
{
struct sk_buff *msg;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_config_mcgrp.id, 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;
ASSERT_RDEV_LOCK(rdev);
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);
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_scan_mcgrp.id, GFP_KERNEL);
}
void nl80211_send_scan_done(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_NEW_SCAN_RESULTS) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_scan_mcgrp.id, GFP_KERNEL);
}
void nl80211_send_scan_aborted(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_SCAN_ABORTED) < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_scan_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_scan_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_scan_mcgrp.id, 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 (wiphy_idx_valid(request->wiphy_idx) &&
nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
goto nla_put_failure;
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
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)
{
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;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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);
}
void nl80211_send_rx_assoc(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_ASSOCIATE, gfp);
}
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);
}
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);
}
void nl80211_send_unprot_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_UNPROT_DEAUTHENTICATE, gfp);
}
void nl80211_send_unprot_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_UNPROT_DISASSOCIATE, gfp);
}
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
const u8 *macaddr, const u8* ie, u8 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_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, netdev->ifindex) ||
nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
(ie_len && ie &&
nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
goto nla_put_failure;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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))
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))
goto nla_put_failure;
nla_nest_end(msg, nl_freq);
genlmsg_end(msg, hdr);
rcu_read_lock();
genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u64 cookie,
struct ieee80211_channel *chan,
unsigned int duration, gfp_t gfp)
{
nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan,
duration, gfp);
}
void nl80211_send_remain_on_channel_cancel(
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
u64 cookie, struct ieee80211_channel *chan, gfp_t gfp)
{
nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
rdev, wdev, cookie, chan, 0, gfp);
}
void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
struct net_device *dev, const u8 *mac_addr,
struct station_info *sinfo, gfp_t gfp)
{
struct sk_buff *msg;
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
}
void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
struct net_device *dev, const u8 *mac_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, 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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
struct net_device *dev, const u8 *mac_addr,
enum nl80211_connect_failed_reason reason,
gfp_t gfp)
{
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
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_dev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
int err;
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;
err = genlmsg_end(msg, hdr);
if (err < 0) {
nlmsg_free(msg);
return true;
}
genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
return true;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
return true;
}
bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
{
return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
addr, gfp);
}
bool nl80211_unexpected_4addr_frame(struct net_device *dev,
const u8 *addr, gfp_t gfp)
{
return __nl80211_unexpected_frame(dev,
NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
addr, gfp);
}
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, 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_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))
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 nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u64 cookie,
const u8 *buf, size_t len, bool ack,
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;
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(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(msg, 0, nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void
nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
enum nl80211_cqm_rssi_threshold_event rssi_event,
gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *pinfoattr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
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;
pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
if (!pinfoattr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
rssi_event))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
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(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_chan_def *chandef, 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_CH_SWITCH_NOTIFY);
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;
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void
nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *peer,
u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *pinfoattr;
void *hdr;
msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
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, peer))
goto nla_put_failure;
pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
if (!pinfoattr)
goto nla_put_failure;
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;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, gfp);
return;
nla_put_failure:
genlmsg_cancel(msg, hdr);
nlmsg_free(msg);
}
void
nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev, const u8 *peer,
u32 num_packets, gfp_t gfp)
{
struct sk_buff *msg;
struct nlattr *pinfoattr;
void *hdr;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
if (!msg)
return;
hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
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, peer))
goto nla_put_failure;
pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
if (!pinfoattr)
goto nla_put_failure;
if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
goto nla_put_failure;
nla_nest_end(msg, pinfoattr);
genlmsg_end(msg, hdr);
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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_dev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
int err;
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;
err = genlmsg_end(msg, hdr);
if (err < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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_dev(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);
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_dev(wdev->wiphy);
struct sk_buff *msg;
void *hdr;
int err;
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;
err = genlmsg_end(msg, hdr);
if (err < 0) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
nl80211_mlme_mcgrp.id, 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) {
list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
cfg80211_mlme_unregister_socket(wdev, notify->portid);
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);
}
rcu_read_unlock();
return NOTIFY_DONE;
}
static struct notifier_block nl80211_netlink_notifier = {
.notifier_call = nl80211_netlink_notify,
};
/* initialisation/exit functions */
int nl80211_init(void)
{
int err;
err = genl_register_family_with_ops(&nl80211_fam,
nl80211_ops, ARRAY_SIZE(nl80211_ops));
if (err)
return err;
err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
if (err)
goto err_out;
err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
if (err)
goto err_out;
err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
if (err)
goto err_out;
err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
if (err)
goto err_out;
#ifdef CONFIG_NL80211_TESTMODE
err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
if (err)
goto err_out;
#endif
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);
}
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