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66e67e4189
linux/net/mac80211/cfg.c
Johannes Berg 66e67e4189 mac80211: redesign auth/assoc 
This is the second part of the auth/assoc redesign,
the mac80211 part. This moves the auth/assoc code
out of the work abstraction and into the MLME, so
that we don't flip channels all the time etc.

The only downside is that when we are associated,
we need to drop the association in order to create
a connection to another AP, but for most drivers
this is actually desirable and the ability to do
was never used by any applications. If we want to
implement resource reservation with FT-OTA, we'd
probably best do it with explicit R-O-C in wpa_s.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-06 14:50:37 -05:00

2762 lines
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/*
* mac80211 configuration hooks for cfg80211
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
*
* This file is GPLv2 as found in COPYING.
*/
#include <linux/ieee80211.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <net/net_namespace.h>
#include <linux/rcupdate.h>
#include <linux/if_ether.h>
#include <net/cfg80211.h>
#include "ieee80211_i.h"
#include "driver-ops.h"
#include "cfg.h"
#include "rate.h"
#include "mesh.h"
static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
enum nl80211_iftype type,
u32 *flags,
struct vif_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct net_device *dev;
struct ieee80211_sub_if_data *sdata;
int err;
err = ieee80211_if_add(local, name, &dev, type, params);
if (err)
return ERR_PTR(err);
if (type == NL80211_IFTYPE_MONITOR && flags) {
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata->u.mntr_flags = *flags;
}
return dev;
}
static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
{
ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
return 0;
}
static int ieee80211_change_iface(struct wiphy *wiphy,
struct net_device *dev,
enum nl80211_iftype type, u32 *flags,
struct vif_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int ret;
ret = ieee80211_if_change_type(sdata, type);
if (ret)
return ret;
if (type == NL80211_IFTYPE_AP_VLAN &&
params && params->use_4addr == 0)
RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
else if (type == NL80211_IFTYPE_STATION &&
params && params->use_4addr >= 0)
sdata->u.mgd.use_4addr = params->use_4addr;
if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
struct ieee80211_local *local = sdata->local;
if (ieee80211_sdata_running(sdata)) {
/*
* Prohibit MONITOR_FLAG_COOK_FRAMES to be
* changed while the interface is up.
* Else we would need to add a lot of cruft
* to update everything:
* cooked_mntrs, monitor and all fif_* counters
* reconfigure hardware
*/
if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
(sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
return -EBUSY;
ieee80211_adjust_monitor_flags(sdata, -1);
sdata->u.mntr_flags = *flags;
ieee80211_adjust_monitor_flags(sdata, 1);
ieee80211_configure_filter(local);
} else {
/*
* Because the interface is down, ieee80211_do_stop
* and ieee80211_do_open take care of "everything"
* mentioned in the comment above.
*/
sdata->u.mntr_flags = *flags;
}
}
return 0;
}
static int ieee80211_set_noack_map(struct wiphy *wiphy,
struct net_device *dev,
u16 noack_map)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata->noack_map = noack_map;
return 0;
}
static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, bool pairwise, const u8 *mac_addr,
struct key_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta = NULL;
struct ieee80211_key *key;
int err;
if (!ieee80211_sdata_running(sdata))
return -ENETDOWN;
/* reject WEP and TKIP keys if WEP failed to initialize */
switch (params->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_WEP104:
if (IS_ERR(sdata->local->wep_tx_tfm))
return -EINVAL;
break;
default:
break;
}
key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
params->key, params->seq_len, params->seq);
if (IS_ERR(key))
return PTR_ERR(key);
if (pairwise)
key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
mutex_lock(&sdata->local->sta_mtx);
if (mac_addr) {
if (ieee80211_vif_is_mesh(&sdata->vif))
sta = sta_info_get(sdata, mac_addr);
else
sta = sta_info_get_bss(sdata, mac_addr);
if (!sta) {
ieee80211_key_free(sdata->local, key);
err = -ENOENT;
goto out_unlock;
}
}
err = ieee80211_key_link(key, sdata, sta);
if (err)
ieee80211_key_free(sdata->local, key);
out_unlock:
mutex_unlock(&sdata->local->sta_mtx);
return err;
}
static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, bool pairwise, const u8 *mac_addr)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
struct ieee80211_key *key = NULL;
int ret;
mutex_lock(&local->sta_mtx);
mutex_lock(&local->key_mtx);
if (mac_addr) {
ret = -ENOENT;
sta = sta_info_get_bss(sdata, mac_addr);
if (!sta)
goto out_unlock;
if (pairwise)
key = key_mtx_dereference(local, sta->ptk);
else
key = key_mtx_dereference(local, sta->gtk[key_idx]);
} else
key = key_mtx_dereference(local, sdata->keys[key_idx]);
if (!key) {
ret = -ENOENT;
goto out_unlock;
}
__ieee80211_key_free(key);
ret = 0;
out_unlock:
mutex_unlock(&local->key_mtx);
mutex_unlock(&local->sta_mtx);
return ret;
}
static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
u8 key_idx, bool pairwise, const u8 *mac_addr,
void *cookie,
void (*callback)(void *cookie,
struct key_params *params))
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta = NULL;
u8 seq[6] = {0};
struct key_params params;
struct ieee80211_key *key = NULL;
u64 pn64;
u32 iv32;
u16 iv16;
int err = -ENOENT;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
if (mac_addr) {
sta = sta_info_get_bss(sdata, mac_addr);
if (!sta)
goto out;
if (pairwise)
key = rcu_dereference(sta->ptk);
else if (key_idx < NUM_DEFAULT_KEYS)
key = rcu_dereference(sta->gtk[key_idx]);
} else
key = rcu_dereference(sdata->keys[key_idx]);
if (!key)
goto out;
memset(&params, 0, sizeof(params));
params.cipher = key->conf.cipher;
switch (key->conf.cipher) {
case WLAN_CIPHER_SUITE_TKIP:
iv32 = key->u.tkip.tx.iv32;
iv16 = key->u.tkip.tx.iv16;
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
drv_get_tkip_seq(sdata->local,
key->conf.hw_key_idx,
&iv32, &iv16);
seq[0] = iv16 & 0xff;
seq[1] = (iv16 >> 8) & 0xff;
seq[2] = iv32 & 0xff;
seq[3] = (iv32 >> 8) & 0xff;
seq[4] = (iv32 >> 16) & 0xff;
seq[5] = (iv32 >> 24) & 0xff;
params.seq = seq;
params.seq_len = 6;
break;
case WLAN_CIPHER_SUITE_CCMP:
pn64 = atomic64_read(&key->u.ccmp.tx_pn);
seq[0] = pn64;
seq[1] = pn64 >> 8;
seq[2] = pn64 >> 16;
seq[3] = pn64 >> 24;
seq[4] = pn64 >> 32;
seq[5] = pn64 >> 40;
params.seq = seq;
params.seq_len = 6;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
seq[0] = pn64;
seq[1] = pn64 >> 8;
seq[2] = pn64 >> 16;
seq[3] = pn64 >> 24;
seq[4] = pn64 >> 32;
seq[5] = pn64 >> 40;
params.seq = seq;
params.seq_len = 6;
break;
}
params.key = key->conf.key;
params.key_len = key->conf.keylen;
callback(cookie, &params);
err = 0;
out:
rcu_read_unlock();
return err;
}
static int ieee80211_config_default_key(struct wiphy *wiphy,
struct net_device *dev,
u8 key_idx, bool uni,
bool multi)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_set_default_key(sdata, key_idx, uni, multi);
return 0;
}
static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
struct net_device *dev,
u8 key_idx)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_set_default_mgmt_key(sdata, key_idx);
return 0;
}
static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
{
if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
struct ieee80211_supported_band *sband;
sband = sta->local->hw.wiphy->bands[
sta->local->hw.conf.channel->band];
rate->legacy = sband->bitrates[idx].bitrate;
} else
rate->mcs = idx;
}
static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct timespec uptime;
sinfo->generation = sdata->local->sta_generation;
sinfo->filled = STATION_INFO_INACTIVE_TIME |
STATION_INFO_RX_BYTES |
STATION_INFO_TX_BYTES |
STATION_INFO_RX_PACKETS |
STATION_INFO_TX_PACKETS |
STATION_INFO_TX_RETRIES |
STATION_INFO_TX_FAILED |
STATION_INFO_TX_BITRATE |
STATION_INFO_RX_BITRATE |
STATION_INFO_RX_DROP_MISC |
STATION_INFO_BSS_PARAM |
STATION_INFO_CONNECTED_TIME |
STATION_INFO_STA_FLAGS |
STATION_INFO_BEACON_LOSS_COUNT;
do_posix_clock_monotonic_gettime(&uptime);
sinfo->connected_time = uptime.tv_sec - sta->last_connected;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
sinfo->rx_bytes = sta->rx_bytes;
sinfo->tx_bytes = sta->tx_bytes;
sinfo->rx_packets = sta->rx_packets;
sinfo->tx_packets = sta->tx_packets;
sinfo->tx_retries = sta->tx_retry_count;
sinfo->tx_failed = sta->tx_retry_failed;
sinfo->rx_dropped_misc = sta->rx_dropped;
sinfo->beacon_loss_count = sta->beacon_loss_count;
if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
(sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
sinfo->signal = (s8)sta->last_signal;
sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
}
sinfo->txrate.flags = 0;
if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
sinfo->rxrate.flags = 0;
if (sta->last_rx_rate_flag & RX_FLAG_HT)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
if (ieee80211_vif_is_mesh(&sdata->vif)) {
#ifdef CONFIG_MAC80211_MESH
sinfo->filled |= STATION_INFO_LLID |
STATION_INFO_PLID |
STATION_INFO_PLINK_STATE;
sinfo->llid = le16_to_cpu(sta->llid);
sinfo->plid = le16_to_cpu(sta->plid);
sinfo->plink_state = sta->plink_state;
#endif
}
sinfo->bss_param.flags = 0;
if (sdata->vif.bss_conf.use_cts_prot)
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
if (sdata->vif.bss_conf.use_short_preamble)
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
if (sdata->vif.bss_conf.use_short_slot)
sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
sinfo->sta_flags.set = 0;
sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
BIT(NL80211_STA_FLAG_WME) |
BIT(NL80211_STA_FLAG_MFP) |
BIT(NL80211_STA_FLAG_AUTHENTICATED) |
BIT(NL80211_STA_FLAG_TDLS_PEER);
if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
if (test_sta_flag(sta, WLAN_STA_WME))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
if (test_sta_flag(sta, WLAN_STA_MFP))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
if (test_sta_flag(sta, WLAN_STA_AUTH))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
}
static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *mac, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta;
int ret = -ENOENT;
rcu_read_lock();
sta = sta_info_get_by_idx(sdata, idx);
if (sta) {
ret = 0;
memcpy(mac, sta->sta.addr, ETH_ALEN);
sta_set_sinfo(sta, sinfo);
}
rcu_read_unlock();
return ret;
}
static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
int idx, struct survey_info *survey)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
return drv_get_survey(local, idx, survey);
}
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_info *sinfo)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct sta_info *sta;
int ret = -ENOENT;
rcu_read_lock();
sta = sta_info_get_bss(sdata, mac);
if (sta) {
ret = 0;
sta_set_sinfo(sta, sinfo);
}
rcu_read_unlock();
return ret;
}
static void ieee80211_config_ap_ssid(struct ieee80211_sub_if_data *sdata,
struct beacon_parameters *params)
{
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
bss_conf->ssid_len = params->ssid_len;
if (params->ssid_len)
memcpy(bss_conf->ssid, params->ssid, params->ssid_len);
bss_conf->hidden_ssid =
(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
}
static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
u8 *resp, size_t resp_len)
{
struct sk_buff *new, *old;
if (!resp || !resp_len)
return -EINVAL;
old = rtnl_dereference(sdata->u.ap.probe_resp);
new = dev_alloc_skb(resp_len);
if (!new)
return -ENOMEM;
memcpy(skb_put(new, resp_len), resp, resp_len);
rcu_assign_pointer(sdata->u.ap.probe_resp, new);
synchronize_rcu();
if (old)
dev_kfree_skb(old);
return 0;
}
/*
* This handles both adding a beacon and setting new beacon info
*/
static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
struct beacon_parameters *params)
{
struct beacon_data *new, *old;
int new_head_len, new_tail_len;
int size;
int err = -EINVAL;
u32 changed = 0;
old = rtnl_dereference(sdata->u.ap.beacon);
/* head must not be zero-length */
if (params->head && !params->head_len)
return -EINVAL;
/*
* This is a kludge. beacon interval should really be part
* of the beacon information.
*/
if (params->interval &&
(sdata->vif.bss_conf.beacon_int != params->interval)) {
sdata->vif.bss_conf.beacon_int = params->interval;
ieee80211_bss_info_change_notify(sdata,
BSS_CHANGED_BEACON_INT);
}
/* Need to have a beacon head if we don't have one yet */
if (!params->head && !old)
return err;
/* sorry, no way to start beaconing without dtim period */
if (!params->dtim_period && !old)
return err;
/* new or old head? */
if (params->head)
new_head_len = params->head_len;
else
new_head_len = old->head_len;
/* new or old tail? */
if (params->tail || !old)
/* params->tail_len will be zero for !params->tail */
new_tail_len = params->tail_len;
else
new_tail_len = old->tail_len;
size = sizeof(*new) + new_head_len + new_tail_len;
new = kzalloc(size, GFP_KERNEL);
if (!new)
return -ENOMEM;
/* start filling the new info now */
/* new or old dtim period? */
if (params->dtim_period)
new->dtim_period = params->dtim_period;
else
new->dtim_period = old->dtim_period;
/*
* pointers go into the block we allocated,
* memory is | beacon_data | head | tail |
*/
new->head = ((u8 *) new) + sizeof(*new);
new->tail = new->head + new_head_len;
new->head_len = new_head_len;
new->tail_len = new_tail_len;
/* copy in head */
if (params->head)
memcpy(new->head, params->head, new_head_len);
else
memcpy(new->head, old->head, new_head_len);
/* copy in optional tail */
if (params->tail)
memcpy(new->tail, params->tail, new_tail_len);
else
if (old)
memcpy(new->tail, old->tail, new_tail_len);
sdata->vif.bss_conf.dtim_period = new->dtim_period;
rcu_assign_pointer(sdata->u.ap.beacon, new);
synchronize_rcu();
kfree(old);
err = ieee80211_set_probe_resp(sdata, params->probe_resp,
params->probe_resp_len);
if (!err)
changed |= BSS_CHANGED_AP_PROBE_RESP;
ieee80211_config_ap_ssid(sdata, params);
changed |= BSS_CHANGED_BEACON_ENABLED |
BSS_CHANGED_BEACON |
BSS_CHANGED_SSID;
ieee80211_bss_info_change_notify(sdata, changed);
return 0;
}
static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *params)
{
struct ieee80211_sub_if_data *sdata;
struct beacon_data *old;
struct ieee80211_sub_if_data *vlan;
int ret;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
old = rtnl_dereference(sdata->u.ap.beacon);
if (old)
return -EALREADY;
ret = ieee80211_config_beacon(sdata, params);
if (ret)
return ret;
/*
* Apply control port protocol, this allows us to
* not encrypt dynamic WEP control frames.
*/
sdata->control_port_protocol = params->crypto.control_port_ethertype;
sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
vlan->control_port_protocol =
params->crypto.control_port_ethertype;
vlan->control_port_no_encrypt =
params->crypto.control_port_no_encrypt;
}
return 0;
}
static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
struct beacon_parameters *params)
{
struct ieee80211_sub_if_data *sdata;
struct beacon_data *old;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
old = rtnl_dereference(sdata->u.ap.beacon);
if (!old)
return -ENOENT;
return ieee80211_config_beacon(sdata, params);
}
static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata;
struct beacon_data *old;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
old = rtnl_dereference(sdata->u.ap.beacon);
if (!old)
return -ENOENT;
RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
synchronize_rcu();
kfree(old);
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
return 0;
}
/* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
struct iapp_layer2_update {
u8 da[ETH_ALEN]; /* broadcast */
u8 sa[ETH_ALEN]; /* STA addr */
__be16 len; /* 6 */
u8 dsap; /* 0 */
u8 ssap; /* 0 */
u8 control;
u8 xid_info[3];
} __packed;
static void ieee80211_send_layer2_update(struct sta_info *sta)
{
struct iapp_layer2_update *msg;
struct sk_buff *skb;
/* Send Level 2 Update Frame to update forwarding tables in layer 2
* bridge devices */
skb = dev_alloc_skb(sizeof(*msg));
if (!skb)
return;
msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
* Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
memset(msg->da, 0xff, ETH_ALEN);
memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
msg->len = htons(6);
msg->dsap = 0;
msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
msg->control = 0xaf; /* XID response lsb.1111F101.
* F=0 (no poll command; unsolicited frame) */
msg->xid_info[0] = 0x81; /* XID format identifier */
msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
skb->dev = sta->sdata->dev;
skb->protocol = eth_type_trans(skb, sta->sdata->dev);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx_ni(skb);
}
static int sta_apply_parameters(struct ieee80211_local *local,
struct sta_info *sta,
struct station_parameters *params)
{
int ret = 0;
u32 rates;
int i, j;
struct ieee80211_supported_band *sband;
struct ieee80211_sub_if_data *sdata = sta->sdata;
u32 mask, set;
sband = local->hw.wiphy->bands[local->oper_channel->band];
mask = params->sta_flags_mask;
set = params->sta_flags_set;
/*
* In mesh mode, we can clear AUTHENTICATED flag but must
* also make ASSOCIATED follow appropriately for the driver
* API. See also below, after AUTHORIZED changes.
*/
if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
/* cfg80211 should not allow this in non-mesh modes */
if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
return -EINVAL;
if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
!test_sta_flag(sta, WLAN_STA_AUTH)) {
ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
if (ret)
return ret;
ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
if (ret)
return ret;
}
}
if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
if (ret)
return ret;
}
if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
/* cfg80211 should not allow this in non-mesh modes */
if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
return -EINVAL;
if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
test_sta_flag(sta, WLAN_STA_AUTH)) {
ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
if (ret)
return ret;
ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
if (ret)
return ret;
}
}
if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
else
clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
}
if (mask & BIT(NL80211_STA_FLAG_WME)) {
if (set & BIT(NL80211_STA_FLAG_WME)) {
set_sta_flag(sta, WLAN_STA_WME);
sta->sta.wme = true;
} else {
clear_sta_flag(sta, WLAN_STA_WME);
sta->sta.wme = false;
}
}
if (mask & BIT(NL80211_STA_FLAG_MFP)) {
if (set & BIT(NL80211_STA_FLAG_MFP))
set_sta_flag(sta, WLAN_STA_MFP);
else
clear_sta_flag(sta, WLAN_STA_MFP);
}
if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
set_sta_flag(sta, WLAN_STA_TDLS_PEER);
else
clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
}
if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
sta->sta.uapsd_queues = params->uapsd_queues;
sta->sta.max_sp = params->max_sp;
}
/*
* cfg80211 validates this (1-2007) and allows setting the AID
* only when creating a new station entry
*/
if (params->aid)
sta->sta.aid = params->aid;
/*
* FIXME: updating the following information is racy when this
* function is called from ieee80211_change_station().
* However, all this information should be static so
* maybe we should just reject attemps to change it.
*/
if (params->listen_interval >= 0)
sta->listen_interval = params->listen_interval;
if (params->supported_rates) {
rates = 0;
for (i = 0; i < params->supported_rates_len; i++) {
int rate = (params->supported_rates[i] & 0x7f) * 5;
for (j = 0; j < sband->n_bitrates; j++) {
if (sband->bitrates[j].bitrate == rate)
rates |= BIT(j);
}
}
sta->sta.supp_rates[local->oper_channel->band] = rates;
}
if (params->ht_capa)
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
params->ht_capa,
&sta->sta.ht_cap);
if (ieee80211_vif_is_mesh(&sdata->vif)) {
#ifdef CONFIG_MAC80211_MESH
if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
switch (params->plink_state) {
case NL80211_PLINK_LISTEN:
case NL80211_PLINK_ESTAB:
case NL80211_PLINK_BLOCKED:
sta->plink_state = params->plink_state;
break;
default:
/* nothing */
break;
}
else
switch (params->plink_action) {
case PLINK_ACTION_OPEN:
mesh_plink_open(sta);
break;
case PLINK_ACTION_BLOCK:
mesh_plink_block(sta);
break;
}
#endif
}
return 0;
}
static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_parameters *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata;
int err;
int layer2_update;
if (params->vlan) {
sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_AP)
return -EINVAL;
} else
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (compare_ether_addr(mac, sdata->vif.addr) == 0)
return -EINVAL;
if (is_multicast_ether_addr(mac))
return -EINVAL;
sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
if (!sta)
return -ENOMEM;
sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
err = sta_apply_parameters(local, sta, params);
if (err) {
sta_info_free(local, sta);
return err;
}
/*
* for TDLS, rate control should be initialized only when supported
* rates are known.
*/
if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
rate_control_rate_init(sta);
layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
sdata->vif.type == NL80211_IFTYPE_AP;
err = sta_info_insert_rcu(sta);
if (err) {
rcu_read_unlock();
return err;
}
if (layer2_update)
ieee80211_send_layer2_update(sta);
rcu_read_unlock();
return 0;
}
static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (mac)
return sta_info_destroy_addr_bss(sdata, mac);
sta_info_flush(local, sdata);
return 0;
}
static int ieee80211_change_station(struct wiphy *wiphy,
struct net_device *dev,
u8 *mac,
struct station_parameters *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wiphy_priv(wiphy);
struct sta_info *sta;
struct ieee80211_sub_if_data *vlansdata;
int err;
mutex_lock(&local->sta_mtx);
sta = sta_info_get_bss(sdata, mac);
if (!sta) {
mutex_unlock(&local->sta_mtx);
return -ENOENT;
}
/* in station mode, supported rates are only valid with TDLS */
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
params->supported_rates &&
!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
mutex_unlock(&local->sta_mtx);
return -EINVAL;
}
if (params->vlan && params->vlan != sta->sdata->dev) {
vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
vlansdata->vif.type != NL80211_IFTYPE_AP) {
mutex_unlock(&local->sta_mtx);
return -EINVAL;
}
if (params->vlan->ieee80211_ptr->use_4addr) {
if (vlansdata->u.vlan.sta) {
mutex_unlock(&local->sta_mtx);
return -EBUSY;
}
rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
}
sta->sdata = vlansdata;
ieee80211_send_layer2_update(sta);
}
err = sta_apply_parameters(local, sta, params);
if (err) {
mutex_unlock(&local->sta_mtx);
return err;
}
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
rate_control_rate_init(sta);
mutex_unlock(&local->sta_mtx);
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
ieee80211_recalc_ps(local, -1);
return 0;
}
#ifdef CONFIG_MAC80211_MESH
static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop)
{
struct ieee80211_sub_if_data *sdata;
struct mesh_path *mpath;
struct sta_info *sta;
int err;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
sta = sta_info_get(sdata, next_hop);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
err = mesh_path_add(dst, sdata);
if (err) {
rcu_read_unlock();
return err;
}
mpath = mesh_path_lookup(dst, sdata);
if (!mpath) {
rcu_read_unlock();
return -ENXIO;
}
mesh_path_fix_nexthop(mpath, sta);
rcu_read_unlock();
return 0;
}
static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (dst)
return mesh_path_del(dst, sdata);
mesh_path_flush_by_iface(sdata);
return 0;
}
static int ieee80211_change_mpath(struct wiphy *wiphy,
struct net_device *dev,
u8 *dst, u8 *next_hop)
{
struct ieee80211_sub_if_data *sdata;
struct mesh_path *mpath;
struct sta_info *sta;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
sta = sta_info_get(sdata, next_hop);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
mpath = mesh_path_lookup(dst, sdata);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
mesh_path_fix_nexthop(mpath, sta);
rcu_read_unlock();
return 0;
}
static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
struct mpath_info *pinfo)
{
struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
if (next_hop_sta)
memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
else
memset(next_hop, 0, ETH_ALEN);
pinfo->generation = mesh_paths_generation;
pinfo->filled = MPATH_INFO_FRAME_QLEN |
MPATH_INFO_SN |
MPATH_INFO_METRIC |
MPATH_INFO_EXPTIME |
MPATH_INFO_DISCOVERY_TIMEOUT |
MPATH_INFO_DISCOVERY_RETRIES |
MPATH_INFO_FLAGS;
pinfo->frame_qlen = mpath->frame_queue.qlen;
pinfo->sn = mpath->sn;
pinfo->metric = mpath->metric;
if (time_before(jiffies, mpath->exp_time))
pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
pinfo->discovery_timeout =
jiffies_to_msecs(mpath->discovery_timeout);
pinfo->discovery_retries = mpath->discovery_retries;
pinfo->flags = 0;
if (mpath->flags & MESH_PATH_ACTIVE)
pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
if (mpath->flags & MESH_PATH_RESOLVING)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
if (mpath->flags & MESH_PATH_SN_VALID)
pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
if (mpath->flags & MESH_PATH_FIXED)
pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
if (mpath->flags & MESH_PATH_RESOLVING)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
pinfo->flags = mpath->flags;
}
static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
{
struct ieee80211_sub_if_data *sdata;
struct mesh_path *mpath;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
mpath = mesh_path_lookup(dst, sdata);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
memcpy(dst, mpath->dst, ETH_ALEN);
mpath_set_pinfo(mpath, next_hop, pinfo);
rcu_read_unlock();
return 0;
}
static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
int idx, u8 *dst, u8 *next_hop,
struct mpath_info *pinfo)
{
struct ieee80211_sub_if_data *sdata;
struct mesh_path *mpath;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
rcu_read_lock();
mpath = mesh_path_lookup_by_idx(idx, sdata);
if (!mpath) {
rcu_read_unlock();
return -ENOENT;
}
memcpy(dst, mpath->dst, ETH_ALEN);
mpath_set_pinfo(mpath, next_hop, pinfo);
rcu_read_unlock();
return 0;
}
static int ieee80211_get_mesh_config(struct wiphy *wiphy,
struct net_device *dev,
struct mesh_config *conf)
{
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
return 0;
}
static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
{
return (mask >> (parm-1)) & 0x1;
}
static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
const struct mesh_setup *setup)
{
u8 *new_ie;
const u8 *old_ie;
struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
struct ieee80211_sub_if_data, u.mesh);
/* allocate information elements */
new_ie = NULL;
old_ie = ifmsh->ie;
if (setup->ie_len) {
new_ie = kmemdup(setup->ie, setup->ie_len,
GFP_KERNEL);
if (!new_ie)
return -ENOMEM;
}
ifmsh->ie_len = setup->ie_len;
ifmsh->ie = new_ie;
kfree(old_ie);
/* now copy the rest of the setup parameters */
ifmsh->mesh_id_len = setup->mesh_id_len;
memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
ifmsh->mesh_pp_id = setup->path_sel_proto;
ifmsh->mesh_pm_id = setup->path_metric;
ifmsh->security = IEEE80211_MESH_SEC_NONE;
if (setup->is_authenticated)
ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
if (setup->is_secure)
ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
/* mcast rate setting in Mesh Node */
memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
sizeof(setup->mcast_rate));
return 0;
}
static int ieee80211_update_mesh_config(struct wiphy *wiphy,
struct net_device *dev, u32 mask,
const struct mesh_config *nconf)
{
struct mesh_config *conf;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_mesh *ifmsh;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ifmsh = &sdata->u.mesh;
/* Set the config options which we are interested in setting */
conf = &(sdata->u.mesh.mshcfg);
if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
conf->dot11MeshTTL = nconf->dot11MeshTTL;
if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
conf->dot11MeshTTL = nconf->element_ttl;
if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
conf->auto_open_plinks = nconf->auto_open_plinks;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
conf->dot11MeshHWMPmaxPREQretries =
nconf->dot11MeshHWMPmaxPREQretries;
if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
conf->path_refresh_time = nconf->path_refresh_time;
if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
conf->min_discovery_timeout = nconf->min_discovery_timeout;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
conf->dot11MeshHWMPactivePathTimeout =
nconf->dot11MeshHWMPactivePathTimeout;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
conf->dot11MeshHWMPpreqMinInterval =
nconf->dot11MeshHWMPpreqMinInterval;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
conf->dot11MeshHWMPperrMinInterval =
nconf->dot11MeshHWMPperrMinInterval;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
mask))
conf->dot11MeshHWMPnetDiameterTraversalTime =
nconf->dot11MeshHWMPnetDiameterTraversalTime;
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
ieee80211_mesh_root_setup(ifmsh);
}
if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
/* our current gate announcement implementation rides on root
* announcements, so require this ifmsh to also be a root node
* */
if (nconf->dot11MeshGateAnnouncementProtocol &&
!conf->dot11MeshHWMPRootMode) {
conf->dot11MeshHWMPRootMode = 1;
ieee80211_mesh_root_setup(ifmsh);
}
conf->dot11MeshGateAnnouncementProtocol =
nconf->dot11MeshGateAnnouncementProtocol;
}
if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
conf->dot11MeshHWMPRannInterval =
nconf->dot11MeshHWMPRannInterval;
}
if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
return 0;
}
static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
const struct mesh_config *conf,
const struct mesh_setup *setup)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
int err;
memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
err = copy_mesh_setup(ifmsh, setup);
if (err)
return err;
ieee80211_start_mesh(sdata);
return 0;
}
static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_stop_mesh(sdata);
return 0;
}
#endif
static int ieee80211_change_bss(struct wiphy *wiphy,
struct net_device *dev,
struct bss_parameters *params)
{
struct ieee80211_sub_if_data *sdata;
u32 changed = 0;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (params->use_cts_prot >= 0) {
sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
changed |= BSS_CHANGED_ERP_CTS_PROT;
}
if (params->use_short_preamble >= 0) {
sdata->vif.bss_conf.use_short_preamble =
params->use_short_preamble;
changed |= BSS_CHANGED_ERP_PREAMBLE;
}
if (!sdata->vif.bss_conf.use_short_slot &&
sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
sdata->vif.bss_conf.use_short_slot = true;
changed |= BSS_CHANGED_ERP_SLOT;
}
if (params->use_short_slot_time >= 0) {
sdata->vif.bss_conf.use_short_slot =
params->use_short_slot_time;
changed |= BSS_CHANGED_ERP_SLOT;
}
if (params->basic_rates) {
int i, j;
u32 rates = 0;
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_supported_band *sband =
wiphy->bands[local->oper_channel->band];
for (i = 0; i < params->basic_rates_len; i++) {
int rate = (params->basic_rates[i] & 0x7f) * 5;
for (j = 0; j < sband->n_bitrates; j++) {
if (sband->bitrates[j].bitrate == rate)
rates |= BIT(j);
}
}
sdata->vif.bss_conf.basic_rates = rates;
changed |= BSS_CHANGED_BASIC_RATES;
}
if (params->ap_isolate >= 0) {
if (params->ap_isolate)
sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
else
sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
}
if (params->ht_opmode >= 0) {
sdata->vif.bss_conf.ht_operation_mode =
(u16) params->ht_opmode;
changed |= BSS_CHANGED_HT;
}
ieee80211_bss_info_change_notify(sdata, changed);
return 0;
}
static int ieee80211_set_txq_params(struct wiphy *wiphy,
struct net_device *dev,
struct ieee80211_txq_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_tx_queue_params p;
if (!local->ops->conf_tx)
return -EOPNOTSUPP;
memset(&p, 0, sizeof(p));
p.aifs = params->aifs;
p.cw_max = params->cwmax;
p.cw_min = params->cwmin;
p.txop = params->txop;
/*
* Setting tx queue params disables u-apsd because it's only
* called in master mode.
*/
p.uapsd = false;
if (params->queue >= local->hw.queues)
return -EINVAL;
sdata->tx_conf[params->queue] = p;
if (drv_conf_tx(local, sdata, params->queue, &p)) {
wiphy_debug(local->hw.wiphy,
"failed to set TX queue parameters for queue %d\n",
params->queue);
return -EINVAL;
}
return 0;
}
static int ieee80211_set_channel(struct wiphy *wiphy,
struct net_device *netdev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = NULL;
struct ieee80211_channel *old_oper;
enum nl80211_channel_type old_oper_type;
enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
if (netdev)
sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
switch (ieee80211_get_channel_mode(local, NULL)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (local->oper_channel != chan)
return -EBUSY;
if (!sdata && local->_oper_channel_type == channel_type)
return 0;
break;
case CHAN_MODE_UNDEFINED:
break;
}
if (sdata)
old_vif_oper_type = sdata->vif.bss_conf.channel_type;
old_oper_type = local->_oper_channel_type;
if (!ieee80211_set_channel_type(local, sdata, channel_type))
return -EBUSY;
old_oper = local->oper_channel;
local->oper_channel = chan;
/* Update driver if changes were actually made. */
if ((old_oper != local->oper_channel) ||
(old_oper_type != local->_oper_channel_type))
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
old_vif_oper_type != sdata->vif.bss_conf.channel_type)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
return 0;
}
#ifdef CONFIG_PM
static int ieee80211_suspend(struct wiphy *wiphy,
struct cfg80211_wowlan *wowlan)
{
return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
}
static int ieee80211_resume(struct wiphy *wiphy)
{
return __ieee80211_resume(wiphy_priv(wiphy));
}
#else
#define ieee80211_suspend NULL
#define ieee80211_resume NULL
#endif
static int ieee80211_scan(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_scan_request *req)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (ieee80211_vif_type_p2p(&sdata->vif)) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_CLIENT:
break;
case NL80211_IFTYPE_P2P_GO:
if (sdata->local->ops->hw_scan)
break;
/*
* FIXME: implement NoA while scanning in software,
* for now fall through to allow scanning only when
* beaconing hasn't been configured yet
*/
case NL80211_IFTYPE_AP:
if (sdata->u.ap.beacon)
return -EOPNOTSUPP;
break;
default:
return -EOPNOTSUPP;
}
return ieee80211_request_scan(sdata, req);
}
static int
ieee80211_sched_scan_start(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_sched_scan_request *req)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!sdata->local->ops->sched_scan_start)
return -EOPNOTSUPP;
return ieee80211_request_sched_scan_start(sdata, req);
}
static int
ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!sdata->local->ops->sched_scan_stop)
return -EOPNOTSUPP;
return ieee80211_request_sched_scan_stop(sdata);
}
static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_auth_request *req)
{
return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
}
static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_assoc_request *req)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (ieee80211_get_channel_mode(local, sdata)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (local->oper_channel == req->bss->channel)
break;
return -EBUSY;
case CHAN_MODE_UNDEFINED:
break;
}
return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
}
static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_deauth_request *req,
void *cookie)
{
return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
req, cookie);
}
static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_disassoc_request *req,
void *cookie)
{
return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
req, cookie);
}
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ibss_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (ieee80211_get_channel_mode(local, sdata)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (!params->channel_fixed)
return -EBUSY;
if (local->oper_channel == params->channel)
break;
return -EBUSY;
case CHAN_MODE_UNDEFINED:
break;
}
return ieee80211_ibss_join(sdata, params);
}
static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
return ieee80211_ibss_leave(sdata);
}
static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
int err;
if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
err = drv_set_frag_threshold(local, wiphy->frag_threshold);
if (err)
return err;
}
if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
err = drv_set_coverage_class(local, wiphy->coverage_class);
if (err)
return err;
}
if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
err = drv_set_rts_threshold(local, wiphy->rts_threshold);
if (err)
return err;
}
if (changed & WIPHY_PARAM_RETRY_SHORT)
local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
if (changed & WIPHY_PARAM_RETRY_LONG)
local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
if (changed &
(WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
return 0;
}
static int ieee80211_set_tx_power(struct wiphy *wiphy,
enum nl80211_tx_power_setting type, int mbm)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_channel *chan = local->hw.conf.channel;
u32 changes = 0;
switch (type) {
case NL80211_TX_POWER_AUTOMATIC:
local->user_power_level = -1;
break;
case NL80211_TX_POWER_LIMITED:
if (mbm < 0 || (mbm % 100))
return -EOPNOTSUPP;
local->user_power_level = MBM_TO_DBM(mbm);
break;
case NL80211_TX_POWER_FIXED:
if (mbm < 0 || (mbm % 100))
return -EOPNOTSUPP;
/* TODO: move to cfg80211 when it knows the channel */
if (MBM_TO_DBM(mbm) > chan->max_power)
return -EINVAL;
local->user_power_level = MBM_TO_DBM(mbm);
break;
}
ieee80211_hw_config(local, changes);
return 0;
}
static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
*dbm = local->hw.conf.power_level;
return 0;
}
static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
const u8 *addr)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
return 0;
}
static void ieee80211_rfkill_poll(struct wiphy *wiphy)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
drv_rfkill_poll(local);
}
#ifdef CONFIG_NL80211_TESTMODE
static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
if (!local->ops->testmode_cmd)
return -EOPNOTSUPP;
return local->ops->testmode_cmd(&local->hw, data, len);
}
static int ieee80211_testmode_dump(struct wiphy *wiphy,
struct sk_buff *skb,
struct netlink_callback *cb,
void *data, int len)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
if (!local->ops->testmode_dump)
return -EOPNOTSUPP;
return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
}
#endif
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode)
{
const u8 *ap;
enum ieee80211_smps_mode old_req;
int err;
lockdep_assert_held(&sdata->u.mgd.mtx);
old_req = sdata->u.mgd.req_smps;
sdata->u.mgd.req_smps = smps_mode;
if (old_req == smps_mode &&
smps_mode != IEEE80211_SMPS_AUTOMATIC)
return 0;
/*
* If not associated, or current association is not an HT
* association, there's no need to send an action frame.
*/
if (!sdata->u.mgd.associated ||
sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
mutex_lock(&sdata->local->iflist_mtx);
ieee80211_recalc_smps(sdata->local);
mutex_unlock(&sdata->local->iflist_mtx);
return 0;
}
ap = sdata->u.mgd.associated->bssid;
if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
if (sdata->u.mgd.powersave)
smps_mode = IEEE80211_SMPS_DYNAMIC;
else
smps_mode = IEEE80211_SMPS_OFF;
}
/* send SM PS frame to AP */
err = ieee80211_send_smps_action(sdata, smps_mode,
ap, ap);
if (err)
sdata->u.mgd.req_smps = old_req;
return err;
}
static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
bool enabled, int timeout)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
return -EOPNOTSUPP;
if (enabled == sdata->u.mgd.powersave &&
timeout == local->dynamic_ps_forced_timeout)
return 0;
sdata->u.mgd.powersave = enabled;
local->dynamic_ps_forced_timeout = timeout;
/* no change, but if automatic follow powersave */
mutex_lock(&sdata->u.mgd.mtx);
__ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
mutex_unlock(&sdata->u.mgd.mtx);
if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
ieee80211_recalc_ps(local, -1);
return 0;
}
static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
struct net_device *dev,
s32 rssi_thold, u32 rssi_hyst)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_vif *vif = &sdata->vif;
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
if (rssi_thold == bss_conf->cqm_rssi_thold &&
rssi_hyst == bss_conf->cqm_rssi_hyst)
return 0;
bss_conf->cqm_rssi_thold = rssi_thold;
bss_conf->cqm_rssi_hyst = rssi_hyst;
/* tell the driver upon association, unless already associated */
if (sdata->u.mgd.associated &&
sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
return 0;
}
static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
struct net_device *dev,
const u8 *addr,
const struct cfg80211_bitrate_mask *mask)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
int i, ret;
if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
ret = drv_set_bitrate_mask(local, sdata, mask);
if (ret)
return ret;
}
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
sizeof(mask->control[i].mcs));
}
return 0;
}
static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type chantype,
unsigned int duration, u64 *cookie)
{
int ret;
u32 random_cookie;
lockdep_assert_held(&local->mtx);
if (local->hw_roc_cookie)
return -EBUSY;
/* must be nonzero */
random_cookie = random32() | 1;
*cookie = random_cookie;
local->hw_roc_dev = dev;
local->hw_roc_cookie = random_cookie;
local->hw_roc_channel = chan;
local->hw_roc_channel_type = chantype;
local->hw_roc_duration = duration;
ret = drv_remain_on_channel(local, chan, chantype, duration);
if (ret) {
local->hw_roc_channel = NULL;
local->hw_roc_cookie = 0;
}
return ret;
}
static int ieee80211_remain_on_channel(struct wiphy *wiphy,
struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
unsigned int duration,
u64 *cookie)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
if (local->ops->remain_on_channel) {
int ret;
mutex_lock(&local->mtx);
ret = ieee80211_remain_on_channel_hw(local, dev,
chan, channel_type,
duration, cookie);
local->hw_roc_for_tx = false;
mutex_unlock(&local->mtx);
return ret;
}
return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
duration, cookie);
}
static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
u64 cookie)
{
int ret;
lockdep_assert_held(&local->mtx);
if (local->hw_roc_cookie != cookie)
return -ENOENT;
ret = drv_cancel_remain_on_channel(local);
if (ret)
return ret;
local->hw_roc_cookie = 0;
local->hw_roc_channel = NULL;
ieee80211_recalc_idle(local);
return 0;
}
static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
struct net_device *dev,
u64 cookie)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
if (local->ops->cancel_remain_on_channel) {
int ret;
mutex_lock(&local->mtx);
ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
mutex_unlock(&local->mtx);
return ret;
}
return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
}
static enum work_done_result
ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
{
/*
* Use the data embedded in the work struct for reporting
* here so if the driver mangled the SKB before dropping
* it (which is the only way we really should get here)
* then we don't report mangled data.
*
* If there was no wait time, then by the time we get here
* the driver will likely not have reported the status yet,
* so in that case userspace will have to deal with it.
*/
if (wk->offchan_tx.wait && !wk->offchan_tx.status)
cfg80211_mgmt_tx_status(wk->sdata->dev,
(unsigned long) wk->offchan_tx.frame,
wk->data, wk->data_len, false, GFP_KERNEL);
return WORK_DONE_DESTROY;
}
static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan, bool offchan,
enum nl80211_channel_type channel_type,
bool channel_type_valid, unsigned int wait,
const u8 *buf, size_t len, bool no_cck,
bool dont_wait_for_ack, u64 *cookie)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct sta_info *sta;
struct ieee80211_work *wk;
const struct ieee80211_mgmt *mgmt = (void *)buf;
u32 flags;
bool is_offchan = false;
if (dont_wait_for_ack)
flags = IEEE80211_TX_CTL_NO_ACK;
else
flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
IEEE80211_TX_CTL_REQ_TX_STATUS;
/* Check that we are on the requested channel for transmission */
if (chan != local->tmp_channel &&
chan != local->oper_channel)
is_offchan = true;
if (channel_type_valid &&
(channel_type != local->tmp_channel_type &&
channel_type != local->_oper_channel_type))
is_offchan = true;
if (chan == local->hw_roc_channel) {
/* TODO: check channel type? */
is_offchan = false;
flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
}
if (no_cck)
flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
if (is_offchan && !offchan)
return -EBUSY;
switch (sdata->vif.type) {
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_MESH_POINT:
if (!ieee80211_is_action(mgmt->frame_control) ||
mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
break;
rcu_read_lock();
sta = sta_info_get(sdata, mgmt->da);
rcu_read_unlock();
if (!sta)
return -ENOLINK;
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
break;
default:
return -EOPNOTSUPP;
}
skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
if (!skb)
return -ENOMEM;
skb_reserve(skb, local->hw.extra_tx_headroom);
memcpy(skb_put(skb, len), buf, len);
IEEE80211_SKB_CB(skb)->flags = flags;
skb->dev = sdata->dev;
*cookie = (unsigned long) skb;
if (is_offchan && local->ops->remain_on_channel) {
unsigned int duration;
int ret;
mutex_lock(&local->mtx);
/*
* If the duration is zero, then the driver
* wouldn't actually do anything. Set it to
* 100 for now.
*
* TODO: cancel the off-channel operation
* when we get the SKB's TX status and
* the wait time was zero before.
*/
duration = 100;
if (wait)
duration = wait;
ret = ieee80211_remain_on_channel_hw(local, dev, chan,
channel_type,
duration, cookie);
if (ret) {
kfree_skb(skb);
mutex_unlock(&local->mtx);
return ret;
}
local->hw_roc_for_tx = true;
local->hw_roc_duration = wait;
/*
* queue up frame for transmission after
* ieee80211_ready_on_channel call
*/
/* modify cookie to prevent API mismatches */
*cookie ^= 2;
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
local->hw_roc_skb = skb;
local->hw_roc_skb_for_status = skb;
mutex_unlock(&local->mtx);
return 0;
}
/*
* Can transmit right away if the channel was the
* right one and there's no wait involved... If a
* wait is involved, we might otherwise not be on
* the right channel for long enough!
*/
if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
ieee80211_tx_skb(sdata, skb);
return 0;
}
wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
if (!wk) {
kfree_skb(skb);
return -ENOMEM;
}
wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
wk->chan = chan;
wk->chan_type = channel_type;
wk->sdata = sdata;
wk->done = ieee80211_offchan_tx_done;
wk->offchan_tx.frame = skb;
wk->offchan_tx.wait = wait;
wk->data_len = len;
memcpy(wk->data, buf, len);
ieee80211_add_work(wk);
return 0;
}
static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
struct net_device *dev,
u64 cookie)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_work *wk;
int ret = -ENOENT;
mutex_lock(&local->mtx);
if (local->ops->cancel_remain_on_channel) {
cookie ^= 2;
ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
if (ret == 0) {
kfree_skb(local->hw_roc_skb);
local->hw_roc_skb = NULL;
local->hw_roc_skb_for_status = NULL;
}
mutex_unlock(&local->mtx);
return ret;
}
list_for_each_entry(wk, &local->work_list, list) {
if (wk->sdata != sdata)
continue;
if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
continue;
if (cookie != (unsigned long) wk->offchan_tx.frame)
continue;
wk->timeout = jiffies;
ieee80211_queue_work(&local->hw, &local->work_work);
ret = 0;
break;
}
mutex_unlock(&local->mtx);
return ret;
}
static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
struct net_device *dev,
u16 frame_type, bool reg)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
return;
if (reg)
local->probe_req_reg++;
else
local->probe_req_reg--;
ieee80211_queue_work(&local->hw, &local->reconfig_filter);
}
static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
if (local->started)
return -EOPNOTSUPP;
return drv_set_antenna(local, tx_ant, rx_ant);
}
static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
return drv_get_antenna(local, tx_ant, rx_ant);
}
static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
return drv_set_ringparam(local, tx, rx);
}
static void ieee80211_get_ringparam(struct wiphy *wiphy,
u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
drv_get_ringparam(local, tx, tx_max, rx, rx_max);
}
static int ieee80211_set_rekey_data(struct wiphy *wiphy,
struct net_device *dev,
struct cfg80211_gtk_rekey_data *data)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!local->ops->set_rekey_data)
return -EOPNOTSUPP;
drv_set_rekey_data(local, sdata, data);
return 0;
}
static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
{
u8 *pos = (void *)skb_put(skb, 7);
*pos++ = WLAN_EID_EXT_CAPABILITY;
*pos++ = 5; /* len */
*pos++ = 0x0;
*pos++ = 0x0;
*pos++ = 0x0;
*pos++ = 0x0;
*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
}
static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
u16 capab;
capab = 0;
if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
return capab;
if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
return capab;
}
static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
u8 *peer, u8 *bssid)
{
struct ieee80211_tdls_lnkie *lnkid;
lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
lnkid->ie_type = WLAN_EID_LINK_ID;
lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
memcpy(lnkid->bssid, bssid, ETH_ALEN);
memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
memcpy(lnkid->resp_sta, peer, ETH_ALEN);
}
static int
ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, struct sk_buff *skb)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_tdls_data *tf;
tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
memcpy(tf->da, peer, ETH_ALEN);
memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
tf->ether_type = cpu_to_be16(ETH_P_TDLS);
tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
tf->category = WLAN_CATEGORY_TDLS;
tf->action_code = WLAN_TDLS_SETUP_REQUEST;
skb_put(skb, sizeof(tf->u.setup_req));
tf->u.setup_req.dialog_token = dialog_token;
tf->u.setup_req.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(&sdata->vif, skb);
ieee80211_add_ext_srates_ie(&sdata->vif, skb);
ieee80211_tdls_add_ext_capab(skb);
break;
case WLAN_TDLS_SETUP_RESPONSE:
tf->category = WLAN_CATEGORY_TDLS;
tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
skb_put(skb, sizeof(tf->u.setup_resp));
tf->u.setup_resp.status_code = cpu_to_le16(status_code);
tf->u.setup_resp.dialog_token = dialog_token;
tf->u.setup_resp.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(&sdata->vif, skb);
ieee80211_add_ext_srates_ie(&sdata->vif, skb);
ieee80211_tdls_add_ext_capab(skb);
break;
case WLAN_TDLS_SETUP_CONFIRM:
tf->category = WLAN_CATEGORY_TDLS;
tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
skb_put(skb, sizeof(tf->u.setup_cfm));
tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
tf->u.setup_cfm.dialog_token = dialog_token;
break;
case WLAN_TDLS_TEARDOWN:
tf->category = WLAN_CATEGORY_TDLS;
tf->action_code = WLAN_TDLS_TEARDOWN;
skb_put(skb, sizeof(tf->u.teardown));
tf->u.teardown.reason_code = cpu_to_le16(status_code);
break;
case WLAN_TDLS_DISCOVERY_REQUEST:
tf->category = WLAN_CATEGORY_TDLS;
tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
skb_put(skb, sizeof(tf->u.discover_req));
tf->u.discover_req.dialog_token = dialog_token;
break;
default:
return -EINVAL;
}
return 0;
}
static int
ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, struct sk_buff *skb)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_mgmt *mgmt;
mgmt = (void *)skb_put(skb, 24);
memset(mgmt, 0, 24);
memcpy(mgmt->da, peer, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
switch (action_code) {
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
mgmt->u.action.u.tdls_discover_resp.action_code =
WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
mgmt->u.action.u.tdls_discover_resp.dialog_token =
dialog_token;
mgmt->u.action.u.tdls_discover_resp.capability =
cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
ieee80211_add_srates_ie(&sdata->vif, skb);
ieee80211_add_ext_srates_ie(&sdata->vif, skb);
ieee80211_tdls_add_ext_capab(skb);
break;
default:
return -EINVAL;
}
return 0;
}
static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, u8 action_code, u8 dialog_token,
u16 status_code, const u8 *extra_ies,
size_t extra_ies_len)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info;
struct sk_buff *skb = NULL;
bool send_direct;
int ret;
if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
return -ENOTSUPP;
/* make sure we are in managed mode, and associated */
if (sdata->vif.type != NL80211_IFTYPE_STATION ||
!sdata->u.mgd.associated)
return -EINVAL;
#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
#endif
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
max(sizeof(struct ieee80211_mgmt),
sizeof(struct ieee80211_tdls_data)) +
50 + /* supported rates */
7 + /* ext capab */
extra_ies_len +
sizeof(struct ieee80211_tdls_lnkie));
if (!skb)
return -ENOMEM;
info = IEEE80211_SKB_CB(skb);
skb_reserve(skb, local->hw.extra_tx_headroom);
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
case WLAN_TDLS_SETUP_RESPONSE:
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
action_code, dialog_token,
status_code, skb);
send_direct = false;
break;
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
dialog_token, status_code,
skb);
send_direct = true;
break;
default:
ret = -ENOTSUPP;
break;
}
if (ret < 0)
goto fail;
if (extra_ies_len)
memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
/* the TDLS link IE is always added last */
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
case WLAN_TDLS_SETUP_CONFIRM:
case WLAN_TDLS_TEARDOWN:
case WLAN_TDLS_DISCOVERY_REQUEST:
/* we are the initiator */
ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
sdata->u.mgd.bssid);
break;
case WLAN_TDLS_SETUP_RESPONSE:
case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
/* we are the responder */
ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
sdata->u.mgd.bssid);
break;
default:
ret = -ENOTSUPP;
goto fail;
}
if (send_direct) {
ieee80211_tx_skb(sdata, skb);
return 0;
}
/*
* According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
* we should default to AC_VI.
*/
switch (action_code) {
case WLAN_TDLS_SETUP_REQUEST:
case WLAN_TDLS_SETUP_RESPONSE:
skb_set_queue_mapping(skb, IEEE80211_AC_BK);
skb->priority = 2;
break;
default:
skb_set_queue_mapping(skb, IEEE80211_AC_VI);
skb->priority = 5;
break;
}
/* disable bottom halves when entering the Tx path */
local_bh_disable();
ret = ieee80211_subif_start_xmit(skb, dev);
local_bh_enable();
return ret;
fail:
dev_kfree_skb(skb);
return ret;
}
static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
u8 *peer, enum nl80211_tdls_operation oper)
{
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
return -ENOTSUPP;
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
#endif
switch (oper) {
case NL80211_TDLS_ENABLE_LINK:
rcu_read_lock();
sta = sta_info_get(sdata, peer);
if (!sta) {
rcu_read_unlock();
return -ENOLINK;
}
set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
rcu_read_unlock();
break;
case NL80211_TDLS_DISABLE_LINK:
return sta_info_destroy_addr(sdata, peer);
case NL80211_TDLS_TEARDOWN:
case NL80211_TDLS_SETUP:
case NL80211_TDLS_DISCOVERY_REQ:
/* We don't support in-driver setup/teardown/discovery */
return -ENOTSUPP;
default:
return -ENOTSUPP;
}
return 0;
}
static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
const u8 *peer, u64 *cookie)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct ieee80211_qos_hdr *nullfunc;
struct sk_buff *skb;
int size = sizeof(*nullfunc);
__le16 fc;
bool qos;
struct ieee80211_tx_info *info;
struct sta_info *sta;
rcu_read_lock();
sta = sta_info_get(sdata, peer);
if (sta) {
qos = test_sta_flag(sta, WLAN_STA_WME);
rcu_read_unlock();
} else {
rcu_read_unlock();
return -ENOLINK;
}
if (qos) {
fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_QOS_NULLFUNC |
IEEE80211_FCTL_FROMDS);
} else {
size -= 2;
fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_FROMDS);
}
skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
if (!skb)
return -ENOMEM;
skb->dev = dev;
skb_reserve(skb, local->hw.extra_tx_headroom);
nullfunc = (void *) skb_put(skb, size);
nullfunc->frame_control = fc;
nullfunc->duration_id = 0;
memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
nullfunc->seq_ctrl = 0;
info = IEEE80211_SKB_CB(skb);
info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_INTFL_NL80211_FRAME_TX;
skb_set_queue_mapping(skb, IEEE80211_AC_VO);
skb->priority = 7;
if (qos)
nullfunc->qos_ctrl = cpu_to_le16(7);
local_bh_disable();
ieee80211_xmit(sdata, skb);
local_bh_enable();
*cookie = (unsigned long) skb;
return 0;
}
static struct ieee80211_channel *
ieee80211_wiphy_get_channel(struct wiphy *wiphy)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
return local->oper_channel;
}
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
.change_virtual_intf = ieee80211_change_iface,
.add_key = ieee80211_add_key,
.del_key = ieee80211_del_key,
.get_key = ieee80211_get_key,
.set_default_key = ieee80211_config_default_key,
.set_default_mgmt_key = ieee80211_config_default_mgmt_key,
.add_beacon = ieee80211_add_beacon,
.set_beacon = ieee80211_set_beacon,
.del_beacon = ieee80211_del_beacon,
.add_station = ieee80211_add_station,
.del_station = ieee80211_del_station,
.change_station = ieee80211_change_station,
.get_station = ieee80211_get_station,
.dump_station = ieee80211_dump_station,
.dump_survey = ieee80211_dump_survey,
#ifdef CONFIG_MAC80211_MESH
.add_mpath = ieee80211_add_mpath,
.del_mpath = ieee80211_del_mpath,
.change_mpath = ieee80211_change_mpath,
.get_mpath = ieee80211_get_mpath,
.dump_mpath = ieee80211_dump_mpath,
.update_mesh_config = ieee80211_update_mesh_config,
.get_mesh_config = ieee80211_get_mesh_config,
.join_mesh = ieee80211_join_mesh,
.leave_mesh = ieee80211_leave_mesh,
#endif
.change_bss = ieee80211_change_bss,
.set_txq_params = ieee80211_set_txq_params,
.set_channel = ieee80211_set_channel,
.suspend = ieee80211_suspend,
.resume = ieee80211_resume,
.scan = ieee80211_scan,
.sched_scan_start = ieee80211_sched_scan_start,
.sched_scan_stop = ieee80211_sched_scan_stop,
.auth = ieee80211_auth,
.assoc = ieee80211_assoc,
.deauth = ieee80211_deauth,
.disassoc = ieee80211_disassoc,
.join_ibss = ieee80211_join_ibss,
.leave_ibss = ieee80211_leave_ibss,
.set_wiphy_params = ieee80211_set_wiphy_params,
.set_tx_power = ieee80211_set_tx_power,
.get_tx_power = ieee80211_get_tx_power,
.set_wds_peer = ieee80211_set_wds_peer,
.rfkill_poll = ieee80211_rfkill_poll,
CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
.set_power_mgmt = ieee80211_set_power_mgmt,
.set_bitrate_mask = ieee80211_set_bitrate_mask,
.remain_on_channel = ieee80211_remain_on_channel,
.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
.mgmt_tx = ieee80211_mgmt_tx,
.mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
.mgmt_frame_register = ieee80211_mgmt_frame_register,
.set_antenna = ieee80211_set_antenna,
.get_antenna = ieee80211_get_antenna,
.set_ringparam = ieee80211_set_ringparam,
.get_ringparam = ieee80211_get_ringparam,
.set_rekey_data = ieee80211_set_rekey_data,
.tdls_oper = ieee80211_tdls_oper,
.tdls_mgmt = ieee80211_tdls_mgmt,
.probe_client = ieee80211_probe_client,
.get_channel = ieee80211_wiphy_get_channel,
.set_noack_map = ieee80211_set_noack_map,
};
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