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linux/net/mac80211/cfg.c
Johannes Berg 543d1b92d5 mac80211: fix no-op authorized transitions 
When userspace attempts to authorize a station
that is already authorized, nothing happens as
you'd expect. Similarly, when it unauthorizes
a station that is associated, nothing happens.

However, when it unauthorizes a station that
isn't even associated yet, we erroneously try
to move the station to associated. This seems
to happen occasionally as a result of a race
when wpa_supplicant attempts to unauthorize
the port in managed mode. Particularly with my
new patches to keep stations, it can then move
a station into ASSOCIATED state before we have
really associated, which is really confusing.

I introduced this bug in
"mac80211: refactor station state transitions"

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-13 14:40:58 -05:00

2764 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_checked(sta,
IEEE80211_STA_AUTH);
if (ret)
return ret;
ret = sta_info_move_state_checked(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_checked(sta,
IEEE80211_STA_AUTHORIZED);
else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
ret = sta_info_move_state_checked(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_checked(sta,
IEEE80211_STA_AUTH);
if (ret)
return ret;
ret = sta_info_move_state_checked(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_move_state(sta, IEEE80211_STA_AUTH);
sta_info_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;
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);
}
sta_apply_parameters(local, sta, params);
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;
}
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_local *local = wdev_priv(dev->ieee80211_ptr);
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;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
return 0;
}
/* tell the driver upon association, unless already associated */
if (sdata->u.mgd.associated)
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;
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->ie, wk->ie_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->ie_len = len;
memcpy(wk->ie, 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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