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cfg.c
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/*
* mac80211 configuration hooks for cfg80211
*
* Copyright 2006-2010 Johannes Berg <[email protected]>
*
* 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(¶ms, 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, ¶ms);
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;
}
void sta_set_rate_info_tx(struct sta_info *sta,
const struct ieee80211_tx_rate *rate,
struct rate_info *rinfo)
{
rinfo->flags = 0;
if (rate->flags & IEEE80211_TX_RC_MCS)
rinfo->flags |= RATE_INFO_FLAGS_MCS;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
rate_idx_to_bitrate(rinfo, sta, rate->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);
}
sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
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 int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
const u8 *resp, size_t resp_len)
{
struct sk_buff *new, *old;
if (!resp || !resp_len)
return 1;
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);
if (old) {
/* TODO: use call_rcu() */
synchronize_rcu();
dev_kfree_skb(old);
}
return 0;
}
static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_beacon_data *params)
{
struct beacon_data *new, *old;
int new_head_len, new_tail_len;
int size, err;
u32 changed = BSS_CHANGED_BEACON;
old = rtnl_dereference(sdata->u.ap.beacon);
/* Need to have a beacon head if we don't have one yet */
if (!params->head && !old)
return -EINVAL;
/* 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 */
/*
* 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);
err = ieee80211_set_probe_resp(sdata, params->probe_resp,
params->probe_resp_len);
if (err < 0)
return err;
if (err == 0)
changed |= BSS_CHANGED_AP_PROBE_RESP;
rcu_assign_pointer(sdata->u.ap.beacon, new);
if (old)
kfree_rcu(old, rcu_head);
return changed;
}
static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ap_settings *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct beacon_data *old;
struct ieee80211_sub_if_data *vlan;
u32 changed = BSS_CHANGED_BEACON_INT |
BSS_CHANGED_BEACON_ENABLED |
BSS_CHANGED_BEACON |
BSS_CHANGED_SSID;
int err;
old = rtnl_dereference(sdata->u.ap.beacon);
if (old)
return -EALREADY;
/*
* 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;
}
sdata->vif.bss_conf.beacon_int = params->beacon_interval;
sdata->vif.bss_conf.dtim_period = params->dtim_period;
sdata->vif.bss_conf.ssid_len = params->ssid_len;
if (params->ssid_len)
memcpy(sdata->vif.bss_conf.ssid, params->ssid,
params->ssid_len);
sdata->vif.bss_conf.hidden_ssid =
(params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
err = ieee80211_assign_beacon(sdata, ¶ms->beacon);
if (err < 0)
return err;
changed |= err;
ieee80211_bss_info_change_notify(sdata, changed);
return 0;
}
static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_beacon_data *params)
{
struct ieee80211_sub_if_data *sdata;
struct beacon_data *old;
int err;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
old = rtnl_dereference(sdata->u.ap.beacon);
if (!old)
return -ENOENT;
err = ieee80211_assign_beacon(sdata, params);
if (err < 0)
return err;
ieee80211_bss_info_change_notify(sdata, err);
return 0;
}
static int ieee80211_stop_ap(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);
kfree_rcu(old, rcu_head);
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);