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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6

Browse Source 
Conflicts:
	net/mac80211/pm.c
This commit is contained in:
David S. Miller
2009-04-25 16:36:46 -07:00
parent ad8affd972 d3feaf5ad1
commit 495a1b4eff
187 changed files with 7924 additions and 5614 deletions
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16
net/mac80211/Kconfig
View File

@@ -11,6 +11,22 @@ config MAC80211
This option enables the hardware independent IEEE 802.11
networking stack.
config MAC80211_DEFAULT_PS
bool "enable powersave by default"
depends on MAC80211
default y
help
This option enables powersave mode by default.
If this causes your applications to misbehave you should fix your
applications instead -- they need to register their network
latency requirement, see Documentation/power/pm_qos_interface.txt.
config MAC80211_DEFAULT_PS_VALUE
int
default 1 if MAC80211_DEFAULT_PS
default 0
menu "Rate control algorithm selection"
depends on MAC80211 != n

59
net/mac80211/cfg.c
View File

@@ -1167,7 +1167,8 @@ static int ieee80211_scan(struct wiphy *wiphy,
if (sdata->vif.type != NL80211_IFTYPE_STATION &&
sdata->vif.type != NL80211_IFTYPE_ADHOC &&
sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
(sdata->vif.type != NL80211_IFTYPE_AP || sdata->u.ap.beacon))
return -EOPNOTSUPP;
return ieee80211_request_scan(sdata, req);
@@ -1267,25 +1268,62 @@ static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_deauth_request *req)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
/* TODO: req->ie */
/* TODO: req->ie, req->peer_addr */
return ieee80211_sta_deauthenticate(sdata, req->reason_code);
}
static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_disassoc_request *req)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
/* TODO: req->ie */
/* TODO: req->ie, req->peer_addr */
return ieee80211_sta_disassociate(sdata, req->reason_code);
}
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ibss_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
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);
if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
int err;
if (local->ops->set_rts_threshold) {
err = local->ops->set_rts_threshold(
local_to_hw(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;
}
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -1322,4 +1360,7 @@ struct cfg80211_ops mac80211_config_ops = {
.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,
};

8
net/mac80211/debugfs.c
View File

@@ -52,13 +52,13 @@ static const struct file_operations name## _ops = { \
DEBUGFS_READONLY_FILE(frequency, 20, "%d",
local->hw.conf.channel->center_freq);
DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
local->rts_threshold);
local->hw.wiphy->rts_threshold);
DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
local->fragmentation_threshold);
local->hw.wiphy->frag_threshold);
DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
local->hw.conf.short_frame_max_tx_count);
local->hw.wiphy->retry_short);
DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
local->hw.conf.long_frame_max_tx_count);
local->hw.wiphy->retry_long);
DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
local->total_ps_buffered);
DEBUGFS_READONLY_FILE(wep_iv, 20, "%#08x",

17
net/mac80211/event.c
View File

@@ -12,12 +12,12 @@
#include "ieee80211_i.h"
/*
* indicate a failed Michael MIC to userspace; the passed packet
* (in the variable hdr) must be long enough to extract the TKIP
* fields like TSC
* Indicate a failed Michael MIC to userspace. If the caller knows the TSC of
* the frame that generated the MIC failure (i.e., if it was provided by the
* driver or is still in the frame), it should provide that information.
*/
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr)
struct ieee80211_hdr *hdr, const u8 *tsc)
{
union iwreq_data wrqu;
char *buf = kmalloc(128, GFP_ATOMIC);
@@ -34,8 +34,9 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
kfree(buf);
}
/*
* TODO: re-add support for sending MIC failure indication
* with all info via nl80211
*/
cfg80211_michael_mic_failure(sdata->dev, hdr->addr2,
(hdr->addr1[0] & 0x01) ?
NL80211_KEYTYPE_GROUP :
NL80211_KEYTYPE_PAIRWISE,
keyidx, tsc);
}

84
net/mac80211/ht.c
View File

@@ -14,7 +14,6 @@
*/
#include <linux/ieee80211.h>
#include <net/wireless.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "rate.h"
@@ -83,89 +82,6 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
ht_cap->mcs.rx_mask[32/8] |= 1;
}
/*
* ieee80211_enable_ht should be called only after the operating band
* has been determined as ht configuration depends on the hw's
* HT abilities for a specific band.
*/
u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct ieee80211_ht_info *hti,
u16 ap_ht_cap_flags)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_bss_ht_conf ht;
struct sta_info *sta;
u32 changed = 0;
bool enable_ht = true, ht_changed;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
memset(&ht, 0, sizeof(ht));
/* HT is not supported */
if (!sband->ht_cap.ht_supported)
enable_ht = false;
/* check that channel matches the right operating channel */
if (local->hw.conf.channel->center_freq !=
ieee80211_channel_to_frequency(hti->control_chan))
enable_ht = false;
if (enable_ht) {
channel_type = NL80211_CHAN_HT20;
if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
(hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
channel_type = NL80211_CHAN_HT40PLUS;
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
channel_type = NL80211_CHAN_HT40MINUS;
break;
}
}
}
ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
channel_type != local->hw.conf.channel_type;
local->oper_channel_type = channel_type;
if (ht_changed) {
/* channel_type change automatically detected */
ieee80211_hw_config(local, 0);
rcu_read_lock();
sta = sta_info_get(local, ifmgd->bssid);
if (sta)
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED);
rcu_read_unlock();
}
/* disable HT */
if (!enable_ht)
return 0;
ht.operation_mode = le16_to_cpu(hti->operation_mode);
/* if bss configuration changed store the new one */
if (memcmp(&sdata->vif.bss_conf.ht, &ht, sizeof(ht))) {
changed |= BSS_CHANGED_HT;
sdata->vif.bss_conf.ht = ht;
}
return changed;
}
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta)
{
int i;

347
net/mac80211/ibss.c
View File

@@ -59,74 +59,59 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
sdata->u.ibss.bssid, 0);
}
static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const int beacon_int,
const int freq,
const size_t supp_rates_len,
const u8 *supp_rates,
const u16 capability, u64 tsf)
static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const int beacon_int,
struct ieee80211_channel *chan,
const size_t supp_rates_len,
const u8 *supp_rates,
const u16 capability, u64 tsf)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
int res = 0, rates, i, j;
int rates, i, j;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos;
struct ieee80211_supported_band *sband;
union iwreq_data wrqu;
if (local->ops->reset_tsf) {
/* Reset own TSF to allow time synchronization work. */
local->ops->reset_tsf(local_to_hw(local));
}
if ((ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) &&
memcmp(ifibss->bssid, bssid, ETH_ALEN) == 0)
return res;
skb = ifibss->skb;
rcu_assign_pointer(ifibss->presp, NULL);
synchronize_rcu();
skb->data = skb->head;
skb->len = 0;
skb_reset_tail_pointer(skb);
skb_reserve(skb, sdata->local->hw.extra_tx_headroom);
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"response\n", sdata->dev->name);
return -ENOMEM;
}
if (!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) {
/* Remove possible STA entries from other IBSS networks. */
sta_info_flush_delayed(sdata);
}
if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
sta_info_flush(sdata->local, sdata);
memcpy(ifibss->bssid, bssid, ETH_ALEN);
res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res)
return res;
local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10;
sdata->drop_unencrypted = capability &
WLAN_CAPABILITY_PRIVACY ? 1 : 0;
sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
res = ieee80211_set_freq(sdata, freq);
ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res)
return res;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
local->oper_channel = chan;
local->oper_channel_type = NL80211_CHAN_NO_HT;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
sband = local->hw.wiphy->bands[chan->band];
/* Build IBSS probe response */
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *)
skb_put(skb, 24 + sizeof(mgmt->u.beacon));
mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon));
memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_RESP);
memset(mgmt->da, 0xff, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
mgmt->u.beacon.beacon_int =
cpu_to_le16(local->hw.conf.beacon_int);
mgmt->u.beacon.beacon_int = cpu_to_le16(local->hw.conf.beacon_int);
mgmt->u.beacon.timestamp = cpu_to_le64(tsf);
mgmt->u.beacon.capab_info = cpu_to_le16(capability);
@@ -147,7 +132,7 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
pos = skb_put(skb, 2 + 1);
*pos++ = WLAN_EID_DS_PARAMS;
*pos++ = 1;
*pos++ = ieee80211_frequency_to_channel(freq);
*pos++ = ieee80211_frequency_to_channel(chan->center_freq);
}
pos = skb_put(skb, 2 + 2);
@@ -165,12 +150,15 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
memcpy(pos, &supp_rates[8], rates);
}
ifibss->probe_resp = skb;
if (ifibss->ie_len)
memcpy(skb_put(skb, ifibss->ie_len),
ifibss->ie, ifibss->ie_len);
rcu_assign_pointer(ifibss->presp, skb);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
IEEE80211_IFCC_BEACON_ENABLED);
rates = 0;
for (i = 0; i < supp_rates_len; i++) {
int bitrate = (supp_rates[i] & 0x7f) * 5;
@@ -181,27 +169,24 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_def_wmm_params(sdata, supp_rates_len, supp_rates);
ifibss->flags |= IEEE80211_IBSS_PREV_BSSID_SET;
ifibss->state = IEEE80211_IBSS_MLME_JOINED;
mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
memset(&wrqu, 0, sizeof(wrqu));
memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
return res;
cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel,
mgmt, skb->len, 0, GFP_KERNEL);
cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL);
}
static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
{
return __ieee80211_sta_join_ibss(sdata,
bss->cbss.bssid,
bss->cbss.beacon_interval,
bss->cbss.channel->center_freq,
bss->supp_rates_len, bss->supp_rates,
bss->cbss.capability,
bss->cbss.tsf);
__ieee80211_sta_join_ibss(sdata, bss->cbss.bssid,
bss->cbss.beacon_interval,
bss->cbss.channel,
bss->supp_rates_len, bss->supp_rates,
bss->cbss.capability,
bss->cbss.tsf);
}
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
@@ -277,7 +262,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
goto put_bss;
/* we use a fixed BSSID */
if (sdata->u.ibss.flags & IEEE80211_IBSS_BSSID_SET)
if (sdata->u.ibss.bssid)
goto put_bss;
/* not an IBSS */
@@ -369,13 +354,14 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
int band = local->hw.conf.channel->band;
/* TODO: Could consider removing the least recently used entry and
* allow new one to be added. */
/*
* XXX: Consider removing the least recently used entry and
* allow new one to be added.
*/
if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: No room for a new IBSS STA "
"entry %pM\n", sdata->dev->name, addr);
}
if (net_ratelimit())
printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n",
sdata->dev->name, addr);
return NULL;
}
@@ -432,14 +418,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT);
if (ieee80211_sta_active_ibss(sdata))
return;
if ((ifibss->flags & IEEE80211_IBSS_BSSID_SET) &&
(!(ifibss->flags & IEEE80211_IBSS_AUTO_CHANNEL_SEL)))
if (ifibss->fixed_channel)
return;
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
@@ -455,7 +442,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
ieee80211_request_scan(sdata, &sdata->local->int_scan_req);
}
static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
@@ -466,7 +453,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
u16 capability;
int i;
if (ifibss->flags & IEEE80211_IBSS_BSSID_SET) {
if (ifibss->fixed_bssid) {
memcpy(bssid, ifibss->bssid, ETH_ALEN);
} else {
/* Generate random, not broadcast, locally administered BSSID. Mix in
@@ -482,7 +469,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n",
sdata->dev->name, bssid);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
sband = local->hw.wiphy->bands[ifibss->channel->band];
if (local->hw.conf.beacon_int == 0)
local->hw.conf.beacon_int = 100;
@@ -500,24 +487,20 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
*pos++ = (u8) (rate / 5);
}
return __ieee80211_sta_join_ibss(sdata,
bssid, local->hw.conf.beacon_int,
local->hw.conf.channel->center_freq,
sband->n_bitrates, supp_rates,
capability, 0);
__ieee80211_sta_join_ibss(sdata, bssid, local->hw.conf.beacon_int,
ifibss->channel, sband->n_bitrates,
supp_rates, capability, 0);
}
static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
struct ieee80211_bss *bss;
struct ieee80211_channel *chan = NULL;
const u8 *bssid = NULL;
int active_ibss;
if (ifibss->ssid_len == 0)
return -EINVAL;
active_ibss = ieee80211_sta_active_ibss(sdata);
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
@@ -525,11 +508,15 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
if (active_ibss)
return 0;
return;
if (ifibss->flags & IEEE80211_IBSS_BSSID_SET)
if (ifibss->fixed_bssid)
bssid = ifibss->bssid;
bss = (void *)cfg80211_get_bss(local->hw.wiphy, NULL, bssid,
if (ifibss->fixed_channel)
chan = ifibss->channel;
if (!is_zero_ether_addr(ifibss->bssid))
bssid = ifibss->bssid;
bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid,
ifibss->ssid, ifibss->ssid_len,
WLAN_CAPABILITY_IBSS,
WLAN_CAPABILITY_IBSS);
@@ -540,18 +527,14 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
"%pM\n", bss->cbss.bssid, ifibss->bssid);
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
if (bss &&
(!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) ||
memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN))) {
int ret;
if (bss && memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) {
printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
" based on configured SSID\n",
sdata->dev->name, bss->cbss.bssid);
ret = ieee80211_sta_join_ibss(sdata, bss);
ieee80211_sta_join_ibss(sdata, bss);
ieee80211_rx_bss_put(local, bss);
return ret;
return;
} else if (bss)
ieee80211_rx_bss_put(local, bss);
@@ -562,29 +545,31 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
/* Selected IBSS not found in current scan results - try to scan */
if (ifibss->state == IEEE80211_IBSS_MLME_JOINED &&
!ieee80211_sta_active_ibss(sdata)) {
mod_timer(&ifibss->timer, jiffies +
IEEE80211_IBSS_MERGE_INTERVAL);
} else if (time_after(jiffies, local->last_scan_completed +
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
} else if (time_after(jiffies, ifibss->last_scan_completed +
IEEE80211_SCAN_INTERVAL)) {
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->dev->name);
/* XXX maybe racy? */
if (local->scan_req)
return -EBUSY;
return;
memcpy(local->int_scan_req.ssids[0].ssid,
ifibss->ssid, IEEE80211_MAX_SSID_LEN);
local->int_scan_req.ssids[0].ssid_len = ifibss->ssid_len;
return ieee80211_request_scan(sdata, &local->int_scan_req);
local->int_scan_req.ssids[0].ssid_len =
ifibss->ssid_len;
ieee80211_request_scan(sdata, &local->int_scan_req);
} else if (ifibss->state != IEEE80211_IBSS_MLME_JOINED) {
int interval = IEEE80211_SCAN_INTERVAL;
if (time_after(jiffies, ifibss->ibss_join_req +
IEEE80211_IBSS_JOIN_TIMEOUT)) {
if (!(local->oper_channel->flags &
IEEE80211_CHAN_NO_IBSS))
return ieee80211_sta_create_ibss(sdata);
if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) {
ieee80211_sta_create_ibss(sdata);
return;
}
printk(KERN_DEBUG "%s: IBSS not allowed on"
" %d MHz\n", sdata->dev->name,
local->hw.conf.channel->center_freq);
@@ -595,11 +580,9 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
}
ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
mod_timer(&ifibss->timer, jiffies + interval);
return 0;
mod_timer(&ifibss->timer,
round_jiffies(jiffies + interval));
}
return 0;
}
static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
@@ -614,7 +597,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
u8 *pos, *end;
if (ifibss->state != IEEE80211_IBSS_MLME_JOINED ||
len < 24 + 2 || !ifibss->probe_resp)
len < 24 + 2 || !ifibss->presp)
return;
if (local->ops->tx_last_beacon)
@@ -649,13 +632,13 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
}
if (pos[1] != 0 &&
(pos[1] != ifibss->ssid_len ||
memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len) != 0)) {
!memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) {
/* Ignore ProbeReq for foreign SSID */
return;
}
/* Reply with ProbeResp */
skb = skb_copy(ifibss->probe_resp, GFP_KERNEL);
skb = skb_copy(ifibss->presp, GFP_KERNEL);
if (!skb)
return;
@@ -794,89 +777,21 @@ void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata)
setup_timer(&ifibss->timer, ieee80211_ibss_timer,
(unsigned long) sdata);
skb_queue_head_init(&ifibss->skb_queue);
ifibss->flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
}
int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
ifibss->flags &= ~IEEE80211_IBSS_PREV_BSSID_SET;
if (ifibss->ssid_len)
ifibss->flags |= IEEE80211_IBSS_SSID_SET;
else
ifibss->flags &= ~IEEE80211_IBSS_SSID_SET;
ifibss->ibss_join_req = jiffies;
ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request);
return 0;
}
int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
if (ifibss->ssid_len != len || memcmp(ifibss->ssid, ssid, len) != 0) {
memset(ifibss->ssid, 0, sizeof(ifibss->ssid));
memcpy(ifibss->ssid, ssid, len);
ifibss->ssid_len = len;
}
return ieee80211_ibss_commit(sdata);
}
int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
memcpy(ssid, ifibss->ssid, ifibss->ssid_len);
*len = ifibss->ssid_len;
return 0;
}
int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
if (is_valid_ether_addr(bssid)) {
memcpy(ifibss->bssid, bssid, ETH_ALEN);
ifibss->flags |= IEEE80211_IBSS_BSSID_SET;
} else {
memset(ifibss->bssid, 0, ETH_ALEN);
ifibss->flags &= ~IEEE80211_IBSS_BSSID_SET;
}
if (netif_running(sdata->dev)) {
if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) {
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
"the low-level driver\n", sdata->dev->name);
}
}
return ieee80211_ibss_commit(sdata);
}
/* scan finished notification */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
struct ieee80211_if_ibss *ifibss;
struct ieee80211_sub_if_data *sdata;
if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) {
ifibss = &sdata->u.ibss;
if ((!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) ||
!ieee80211_sta_active_ibss(sdata))
ieee80211_sta_find_ibss(sdata);
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
continue;
sdata->u.ibss.last_scan_completed = jiffies;
ieee80211_sta_find_ibss(sdata);
}
mutex_unlock(&local->iflist_mtx);
}
ieee80211_rx_result
@@ -906,3 +821,71 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
return RX_DROP_MONITOR;
}
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
struct cfg80211_ibss_params *params)
{
struct sk_buff *skb;
memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN);
sdata->u.ibss.ssid_len = params->ssid_len;
if (params->bssid) {
memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN);
sdata->u.ibss.fixed_bssid = true;
} else
sdata->u.ibss.fixed_bssid = false;
sdata->u.ibss.channel = params->channel;
sdata->u.ibss.fixed_channel = params->channel_fixed;
if (params->ie) {
sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len,
GFP_KERNEL);
if (sdata->u.ibss.ie)
sdata->u.ibss.ie_len = params->ie_len;
}
skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom +
36 /* bitrates */ +
34 /* SSID */ +
3 /* DS params */ +
4 /* IBSS params */ +
params->ie_len);
if (!skb)
return -ENOMEM;
sdata->u.ibss.skb = skb;
sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
sdata->u.ibss.ibss_join_req = jiffies;
set_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
queue_work(sdata->local->hw.workqueue, &sdata->u.ibss.work);
return 0;
}
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
{
struct sk_buff *skb;
del_timer_sync(&sdata->u.ibss.timer);
clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
cancel_work_sync(&sdata->u.ibss.work);
clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
sta_info_flush(sdata->local, sdata);
/* remove beacon */
kfree(sdata->u.ibss.ie);
skb = sdata->u.ibss.presp;
rcu_assign_pointer(sdata->u.ibss.presp, NULL);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED);
synchronize_rcu();
kfree_skb(skb);
skb_queue_purge(&sdata->u.ibss.skb_queue);
memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
return 0;
}

85
net/mac80211/ieee80211_i.h
View File

@@ -24,7 +24,6 @@
#include <linux/spinlock.h>
#include <linux/etherdevice.h>
#include <net/cfg80211.h>
#include <net/wireless.h>
#include <net/iw_handler.h>
#include <net/mac80211.h>
#include "key.h"
@@ -295,6 +294,8 @@ struct ieee80211_if_managed {
int auth_tries; /* retries for auth req */
int assoc_tries; /* retries for assoc req */
bool powersave; /* powersave requested for this iface */
unsigned long request;
unsigned long last_probe;
@@ -306,6 +307,8 @@ struct ieee80211_if_managed {
int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
int auth_transaction;
u32 beacon_crc;
enum {
IEEE80211_MFP_DISABLED,
IEEE80211_MFP_OPTIONAL,
@@ -319,14 +322,6 @@ struct ieee80211_if_managed {
size_t sme_auth_ie_len;
};
enum ieee80211_ibss_flags {
IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
IEEE80211_IBSS_BSSID_SET = BIT(2),
IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
IEEE80211_IBSS_SSID_SET = BIT(4),
};
enum ieee80211_ibss_request {
IEEE80211_IBSS_REQ_RUN = 0,
};
@@ -337,17 +332,20 @@ struct ieee80211_if_ibss {
struct sk_buff_head skb_queue;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u32 flags;
unsigned long request;
unsigned long last_scan_completed;
bool fixed_bssid;
bool fixed_channel;
u8 bssid[ETH_ALEN];
unsigned long request;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, ie_len;
u8 *ie;
struct ieee80211_channel *channel;
unsigned long ibss_join_req;
struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
/* probe response/beacon for IBSS */
struct sk_buff *presp, *skb;
enum {
IEEE80211_IBSS_MLME_SEARCH,
@@ -626,8 +624,6 @@ struct ieee80211_local {
spinlock_t sta_lock;
unsigned long num_sta;
struct list_head sta_list;
struct list_head sta_flush_list;
struct work_struct sta_flush_work;
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
@@ -647,9 +643,6 @@ struct ieee80211_local {
struct rate_control_ref *rate_ctrl;
int rts_threshold;
int fragmentation_threshold;
struct crypto_blkcipher *wep_tx_tfm;
struct crypto_blkcipher *wep_rx_tfm;
u32 wep_iv;
@@ -671,10 +664,12 @@ struct ieee80211_local {
struct cfg80211_scan_request int_scan_req;
struct cfg80211_scan_request *scan_req;
struct ieee80211_channel *scan_channel;
const u8 *orig_ies;
int orig_ies_len;
int scan_channel_idx;
int scan_ies_len;
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
enum nl80211_channel_type oper_channel_type;
@@ -736,15 +731,22 @@ struct ieee80211_local {
int wifi_wme_noack_test;
unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
bool powersave;
bool pspolling;
/*
* PS can only be enabled when we have exactly one managed
* interface (and monitors) in PS, this then points there.
*/
struct ieee80211_sub_if_data *ps_sdata;
struct work_struct dynamic_ps_enable_work;
struct work_struct dynamic_ps_disable_work;
struct timer_list dynamic_ps_timer;
struct notifier_block network_latency_notifier;
int user_power_level; /* in dBm */
int power_constr_level; /* in dBm */
struct work_struct restart_work;
#ifdef CONFIG_MAC80211_DEBUGFS
struct local_debugfsdentries {
struct dentry *rcdir;
@@ -830,7 +832,7 @@ struct ieee802_11_elems {
u8 *fh_params;
u8 *ds_params;
u8 *cf_params;
u8 *tim;
struct ieee80211_tim_ie *tim;
u8 *ibss_params;
u8 *challenge;
u8 *wpa;
@@ -927,12 +929,11 @@ int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
void ieee80211_send_pspoll(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
/* IBSS code */
int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result
@@ -940,6 +941,9 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
u8 *bssid, u8 *addr, u32 supp_rates);
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
struct cfg80211_ibss_params *params);
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
@@ -995,9 +999,6 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
struct ieee80211_ht_cap *ht_cap_ie,
struct ieee80211_sta_ht_cap *ht_cap);
u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct ieee80211_ht_info *hti,
u16 ap_ht_cap_flags);
void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
const u8 *da, u16 tid,
@@ -1036,15 +1037,22 @@ void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
u16 capab_info, u8 *pwr_constr_elem,
u8 pwr_constr_elem_len);
/* Suspend/resume */
/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
#ifdef CONFIG_PM
int __ieee80211_suspend(struct ieee80211_hw *hw);
int __ieee80211_resume(struct ieee80211_hw *hw);
static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
return ieee80211_reconfig(hw_to_local(hw));
}
#else
static inline int __ieee80211_suspend(struct ieee80211_hw *hw)
{
return 0;
}
static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
return 0;
@@ -1060,12 +1068,15 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
int rate, int erp, int short_preamble);
void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
struct ieee80211_hdr *hdr);
struct ieee80211_hdr *hdr, const u8 *tsc);
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
struct ieee802_11_elems *elems,
u64 filter, u32 crc);
int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
enum ieee80211_band band);
@@ -1093,9 +1104,11 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg,
u8 *extra, size_t extra_len,
const u8 *bssid, int encrypt);
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
const u8 *ie, size_t ie_len);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len,
u8 *ie, size_t ie_len);
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len);
void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
const size_t supp_rates_len,

16
net/mac80211/iface.c
View File

@@ -235,11 +235,7 @@ static int ieee80211_open(struct net_device *dev)
netif_addr_unlock_bh(local->mdev);
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
else
sdata->u.ibss.flags &= ~IEEE80211_IBSS_PREV_BSSID_SET;
sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
/* fall through */
default:
conf.vif = &sdata->vif;
@@ -317,6 +313,8 @@ static int ieee80211_open(struct net_device *dev)
ieee80211_set_wmm_default(sdata);
}
ieee80211_recalc_ps(local, -1);
/*
* ieee80211_sta_work is disabled while network interface
* is down. Therefore, some configuration changes may not
@@ -325,8 +323,6 @@ static int ieee80211_open(struct net_device *dev)
*/
if (sdata->vif.type == NL80211_IFTYPE_STATION)
queue_work(local->hw.workqueue, &sdata->u.mgd.work);
else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
queue_work(local->hw.workqueue, &sdata->u.ibss.work);
netif_tx_start_all_queues(dev);
@@ -497,7 +493,6 @@ static int ieee80211_stop(struct net_device *dev)
/* fall through */
case NL80211_IFTYPE_ADHOC:
if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
del_timer_sync(&sdata->u.ibss.timer);
cancel_work_sync(&sdata->u.ibss.work);
synchronize_rcu();
@@ -572,6 +567,8 @@ static int ieee80211_stop(struct net_device *dev)
hw_reconf_flags = 0;
}
ieee80211_recalc_ps(local, -1);
/* do after stop to avoid reconfiguring when we stop anyway */
if (hw_reconf_flags)
ieee80211_hw_config(local, hw_reconf_flags);
@@ -649,7 +646,8 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
mesh_rmc_free(sdata);
break;
case NL80211_IFTYPE_ADHOC:
kfree_skb(sdata->u.ibss.probe_resp);
if (WARN_ON(sdata->u.ibss.presp))
kfree_skb(sdata->u.ibss.presp);
break;
case NL80211_IFTYPE_STATION:
kfree(sdata->u.mgd.extra_ie);

122
net/mac80211/main.c
View File

@@ -21,6 +21,7 @@
#include <linux/wireless.h>
#include <linux/rtnetlink.h>
#include <linux/bitmap.h>
#include <linux/pm_qos_params.h>
#include <net/net_namespace.h>
#include <net/cfg80211.h>
@@ -208,7 +209,7 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed)
!!rcu_dereference(sdata->u.ap.beacon);
break;
case NL80211_IFTYPE_ADHOC:
conf.enable_beacon = !!sdata->u.ibss.probe_resp;
conf.enable_beacon = !!sdata->u.ibss.presp;
break;
case NL80211_IFTYPE_MESH_POINT:
conf.enable_beacon = true;
@@ -696,6 +697,28 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
}
EXPORT_SYMBOL(ieee80211_tx_status);
static void ieee80211_restart_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, restart_work);
rtnl_lock();
ieee80211_reconfig(local);
rtnl_unlock();
}
void ieee80211_restart_hw(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
/* use this reason, __ieee80211_resume will unblock it */
ieee80211_stop_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);
schedule_work(&local->restart_work);
}
EXPORT_SYMBOL(ieee80211_restart_hw);
struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
const struct ieee80211_ops *ops)
{
@@ -728,12 +751,13 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
return NULL;
wiphy->privid = mac80211_wiphy_privid;
wiphy->max_scan_ssids = 4;
/* Yes, putting cfg80211_bss into ieee80211_bss is a hack */
wiphy->bss_priv_size = sizeof(struct ieee80211_bss) -
sizeof(struct cfg80211_bss);
local = wiphy_priv(wiphy);
local->hw.wiphy = wiphy;
local->hw.priv = (char *)local +
@@ -752,10 +776,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
/* set up some defaults */
local->hw.queues = 1;
local->hw.max_rates = 1;
local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
local->hw.conf.long_frame_max_tx_count = 4;
local->hw.conf.short_frame_max_tx_count = 7;
local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
local->hw.conf.radio_enabled = true;
INIT_LIST_HEAD(&local->interfaces);
@@ -767,6 +789,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
INIT_DELAYED_WORK(&local->scan_work, ieee80211_scan_work);
INIT_WORK(&local->restart_work, ieee80211_restart_work);
INIT_WORK(&local->dynamic_ps_enable_work,
ieee80211_dynamic_ps_enable_work);
INIT_WORK(&local->dynamic_ps_disable_work,
@@ -820,7 +844,17 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
enum ieee80211_band band;
struct net_device *mdev;
struct ieee80211_master_priv *mpriv;
int channels, i, j;
int channels, i, j, max_bitrates;
bool supp_ht;
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
/* keep last -- depends on hw flags! */
WLAN_CIPHER_SUITE_AES_CMAC
};
/*
* generic code guarantees at least one band,
@@ -828,18 +862,25 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
* that hw.conf.channel is assigned
*/
channels = 0;
max_bitrates = 0;
supp_ht = false;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
struct ieee80211_supported_band *sband;
sband = local->hw.wiphy->bands[band];
if (sband && !local->oper_channel) {
if (!sband)
continue;
if (!local->oper_channel) {
/* init channel we're on */
local->hw.conf.channel =
local->oper_channel =
local->scan_channel = &sband->channels[0];
}
if (sband)
channels += sband->n_channels;
channels += sband->n_channels;
if (max_bitrates < sband->n_bitrates)
max_bitrates = sband->n_bitrates;
supp_ht = supp_ht || sband->ht_cap.ht_supported;
}
local->int_scan_req.n_channels = channels;
@@ -859,6 +900,37 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
else if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)
local->hw.wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
/*
* Calculate scan IE length -- we need this to alloc
* memory and to subtract from the driver limit. It
* includes the (extended) supported rates and HT
* information -- SSID is the driver's responsibility.
*/
local->scan_ies_len = 4 + max_bitrates; /* (ext) supp rates */
if (supp_ht)
local->scan_ies_len += 2 + sizeof(struct ieee80211_ht_cap);
if (!local->ops->hw_scan) {
/* For hw_scan, driver needs to set these up. */
local->hw.wiphy->max_scan_ssids = 4;
local->hw.wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
}
/*
* If the driver supports any scan IEs, then assume the
* limit includes the IEs mac80211 will add, otherwise
* leave it at zero and let the driver sort it out; we
* still pass our IEs to the driver but userspace will
* not be allowed to in that case.
*/
if (local->hw.wiphy->max_scan_ie_len)
local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
local->hw.wiphy->cipher_suites = cipher_suites;
local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
local->hw.wiphy->n_cipher_suites--;
result = wiphy_register(local->hw.wiphy);
if (result < 0)
goto fail_wiphy_register;
@@ -965,25 +1037,38 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
}
}
local->network_latency_notifier.notifier_call =
ieee80211_max_network_latency;
result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
&local->network_latency_notifier);
if (result) {
rtnl_lock();
goto fail_pm_qos;
}
return 0;
fail_wep:
fail_pm_qos:
ieee80211_led_exit(local);
ieee80211_remove_interfaces(local);
fail_wep:
rate_control_deinitialize(local);
fail_rate:
fail_rate:
unregister_netdevice(local->mdev);
local->mdev = NULL;
fail_dev:
fail_dev:
rtnl_unlock();
sta_info_stop(local);
fail_sta_info:
fail_sta_info:
debugfs_hw_del(local);
destroy_workqueue(local->hw.workqueue);
fail_workqueue:
fail_workqueue:
if (local->mdev)
free_netdev(local->mdev);
fail_mdev_alloc:
fail_mdev_alloc:
wiphy_unregister(local->hw.wiphy);
fail_wiphy_register:
fail_wiphy_register:
kfree(local->int_scan_req.channels);
return result;
}
@@ -996,6 +1081,9 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
tasklet_kill(&local->tx_pending_tasklet);
tasklet_kill(&local->tasklet);
pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
&local->network_latency_notifier);
rtnl_lock();
/*

445
net/mac80211/mlme.c
View File

@@ -17,6 +17,8 @@
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/pm_qos_params.h>
#include <linux/crc32.h>
#include <net/mac80211.h>
#include <asm/unaligned.h>
@@ -80,6 +82,89 @@ static int ieee80211_compatible_rates(struct ieee80211_bss *bss,
return count;
}
/*
* ieee80211_enable_ht should be called only after the operating band
* has been determined as ht configuration depends on the hw's
* HT abilities for a specific band.
*/
static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct ieee80211_ht_info *hti,
u16 ap_ht_cap_flags)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_bss_ht_conf ht;
struct sta_info *sta;
u32 changed = 0;
bool enable_ht = true, ht_changed;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
memset(&ht, 0, sizeof(ht));
/* HT is not supported */
if (!sband->ht_cap.ht_supported)
enable_ht = false;
/* check that channel matches the right operating channel */
if (local->hw.conf.channel->center_freq !=
ieee80211_channel_to_frequency(hti->control_chan))
enable_ht = false;
if (enable_ht) {
channel_type = NL80211_CHAN_HT20;
if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
(hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
channel_type = NL80211_CHAN_HT40PLUS;
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
channel_type = NL80211_CHAN_HT40MINUS;
break;
}
}
}
ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
channel_type != local->hw.conf.channel_type;
local->oper_channel_type = channel_type;
if (ht_changed) {
/* channel_type change automatically detected */
ieee80211_hw_config(local, 0);
rcu_read_lock();
sta = sta_info_get(local, ifmgd->bssid);
if (sta)
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED);
rcu_read_unlock();
}
/* disable HT */
if (!enable_ht)
return 0;
ht.operation_mode = le16_to_cpu(hti->operation_mode);
/* if bss configuration changed store the new one */
if (memcmp(&sdata->vif.bss_conf.ht, &ht, sizeof(ht))) {
changed |= BSS_CHANGED_HT;
sdata->vif.bss_conf.ht = ht;
}
return changed;
}
/* frame sending functions */
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
@@ -325,6 +410,10 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
if (stype == IEEE80211_STYPE_DEAUTH)
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, skb->len);
else
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, skb->len);
ieee80211_tx_skb(sdata, skb, ifmgd->flags & IEEE80211_STA_MFP_ENABLED);
}
@@ -359,6 +448,166 @@ void ieee80211_send_pspoll(struct ieee80211_local *local,
ieee80211_tx_skb(sdata, skb, 0);
}
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
int powersave)
{
struct sk_buff *skb;
struct ieee80211_hdr *nullfunc;
__le16 fc;
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
return;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
"frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
memset(nullfunc, 0, 24);
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_TODS);
if (powersave)
fc |= cpu_to_le16(IEEE80211_FCTL_PM);
nullfunc->frame_control = fc;
memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
ieee80211_tx_skb(sdata, skb, 0);
}
/* powersave */
static void ieee80211_enable_ps(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_conf *conf = &local->hw.conf;
if (conf->dynamic_ps_timeout > 0 &&
!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
mod_timer(&local->dynamic_ps_timer, jiffies +
msecs_to_jiffies(conf->dynamic_ps_timeout));
} else {
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
conf->flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
}
static void ieee80211_change_ps(struct ieee80211_local *local)
{
struct ieee80211_conf *conf = &local->hw.conf;
if (local->ps_sdata) {
if (!(local->ps_sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
return;
ieee80211_enable_ps(local, local->ps_sdata);
} else if (conf->flags & IEEE80211_CONF_PS) {
conf->flags &= ~IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
del_timer_sync(&local->dynamic_ps_timer);
cancel_work_sync(&local->dynamic_ps_enable_work);
}
}
/* need to hold RTNL or interface lock */
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
{
struct ieee80211_sub_if_data *sdata, *found = NULL;
int count = 0;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
local->ps_sdata = NULL;
return;
}
list_for_each_entry(sdata, &local->interfaces, list) {
if (!netif_running(sdata->dev))
continue;
if (sdata->vif.type != NL80211_IFTYPE_STATION)
continue;
found = sdata;
count++;
}
if (count == 1 && found->u.mgd.powersave) {
s32 beaconint_us;
if (latency < 0)
latency = pm_qos_requirement(PM_QOS_NETWORK_LATENCY);
beaconint_us = ieee80211_tu_to_usec(
found->vif.bss_conf.beacon_int);
if (beaconint_us > latency) {
local->ps_sdata = NULL;
} else {
u8 dtimper = found->vif.bss_conf.dtim_period;
int maxslp = 1;
if (dtimper > 1)
maxslp = min_t(int, dtimper,
latency / beaconint_us);
local->hw.conf.max_sleep_interval = maxslp;
local->ps_sdata = found;
}
} else {
local->ps_sdata = NULL;
}
ieee80211_change_ps(local);
}
void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_disable_work);
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
ieee80211_wake_queues_by_reason(&local->hw,
IEEE80211_QUEUE_STOP_REASON_PS);
}
void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_enable_work);
struct ieee80211_sub_if_data *sdata = local->ps_sdata;
/* can only happen when PS was just disabled anyway */
if (!sdata)
return;
if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
local->hw.conf.flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
void ieee80211_dynamic_ps_timer(unsigned long data)
{
struct ieee80211_local *local = (void *) data;
queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
}
/* MLME */
static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
struct ieee80211_if_managed *ifmgd,
@@ -435,30 +684,6 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
}
}
static bool ieee80211_check_tim(struct ieee802_11_elems *elems, u16 aid)
{
u8 mask;
u8 index, indexn1, indexn2;
struct ieee80211_tim_ie *tim = (struct ieee80211_tim_ie *) elems->tim;
if (unlikely(!tim || elems->tim_len < 4))
return false;
aid &= 0x3fff;
index = aid / 8;
mask = 1 << (aid & 7);
indexn1 = tim->bitmap_ctrl & 0xfe;
indexn2 = elems->tim_len + indexn1 - 4;
if (index < indexn1 || index > indexn2)
return false;
index -= indexn1;
return !!(tim->virtual_map[index] & mask);
}
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
u16 capab, bool erp_valid, u8 erp)
{
@@ -634,18 +859,11 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
bss_info_changed |= BSS_CHANGED_BASIC_RATES;
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
if (local->powersave) {
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) &&
local->hw.conf.dynamic_ps_timeout > 0) {
mod_timer(&local->dynamic_ps_timer, jiffies +
msecs_to_jiffies(
local->hw.conf.dynamic_ps_timeout));
} else {
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
conf->flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
/* will be same as sdata */
if (local->ps_sdata) {
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, -1);
mutex_unlock(&local->iflist_mtx);
}
netif_tx_start_all_queues(sdata->dev);
@@ -714,7 +932,7 @@ static void ieee80211_authenticate(struct ieee80211_sub_if_data *sdata)
" timed out\n",
sdata->dev->name, ifmgd->bssid);
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_sta_send_apinfo(sdata);
cfg80211_send_auth_timeout(sdata->dev, ifmgd->bssid);
ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
sdata->local->hw.conf.channel->center_freq,
ifmgd->ssid, ifmgd->ssid_len);
@@ -897,7 +1115,7 @@ static void ieee80211_associate(struct ieee80211_sub_if_data *sdata)
" timed out\n",
sdata->dev->name, ifmgd->bssid);
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
ieee80211_sta_send_apinfo(sdata);
cfg80211_send_assoc_timeout(sdata->dev, ifmgd->bssid);
ieee80211_rx_bss_remove(sdata, ifmgd->bssid,
sdata->local->hw.conf.channel->center_freq,
ifmgd->ssid, ifmgd->ssid_len);
@@ -1187,7 +1405,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
ieee80211_set_disassoc(sdata, true, false, 0);
ifmgd->flags &= ~IEEE80211_STA_AUTHENTICATED;
cfg80211_send_rx_deauth(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_deauth(sdata->dev, (u8 *) mgmt, len);
}
@@ -1218,7 +1436,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
}
ieee80211_set_disassoc(sdata, false, false, reason_code);
cfg80211_send_rx_disassoc(sdata->dev, (u8 *) mgmt, len);
cfg80211_send_disassoc(sdata->dev, (u8 *) mgmt, len);
}
@@ -1287,6 +1505,11 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
* association next time. This works around some broken APs
* which do not correctly reject reassociation requests. */
ifmgd->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
cfg80211_send_rx_assoc(sdata->dev, (u8 *) mgmt, len);
if (ifmgd->flags & IEEE80211_STA_EXT_SME) {
/* Wait for SME to decide what to do next */
ifmgd->state = IEEE80211_STA_MLME_DISABLED;
}
return;
}
@@ -1518,46 +1741,74 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
ifmgd->flags &= ~IEEE80211_STA_PROBEREQ_POLL;
}
/*
* This is the canonical list of information elements we care about,
* the filter code also gives us all changes to the Microsoft OUI
* (00:50:F2) vendor IE which is used for WMM which we need to track.
*
* We implement beacon filtering in software since that means we can
* avoid processing the frame here and in cfg80211, and userspace
* will not be able to tell whether the hardware supports it or not.
*
* XXX: This list needs to be dynamic -- userspace needs to be able to
* add items it requires. It also needs to be able to tell us to
* look out for other vendor IEs.
*/
static const u64 care_about_ies =
(1ULL << WLAN_EID_COUNTRY) |
(1ULL << WLAN_EID_ERP_INFO) |
(1ULL << WLAN_EID_CHANNEL_SWITCH) |
(1ULL << WLAN_EID_PWR_CONSTRAINT) |
(1ULL << WLAN_EID_HT_CAPABILITY) |
(1ULL << WLAN_EID_HT_INFORMATION);
static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_if_managed *ifmgd;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
size_t baselen;
struct ieee802_11_elems elems;
struct ieee80211_local *local = sdata->local;
u32 changed = 0;
bool erp_valid, directed_tim;
bool erp_valid, directed_tim = false;
u8 erp_value = 0;
u32 ncrc;
/* Process beacon from the current BSS */
baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
if (baselen > len)
return;
ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems);
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true);
if (sdata->vif.type != NL80211_IFTYPE_STATION)
if (rx_status->freq != local->hw.conf.channel->center_freq)
return;
ifmgd = &sdata->u.mgd;
if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED) ||
memcmp(ifmgd->bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
if (rx_status->freq != local->hw.conf.channel->center_freq)
ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
len - baselen, &elems,
care_about_ies, ncrc);
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len,
ifmgd->aid);
ncrc = crc32_be(ncrc, (void *)&directed_tim, sizeof(directed_tim));
if (ncrc == ifmgd->beacon_crc)
return;
ifmgd->beacon_crc = ncrc;
ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, true);
ieee80211_sta_wmm_params(local, ifmgd, elems.wmm_param,
elems.wmm_param_len);
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
directed_tim = ieee80211_check_tim(&elems, ifmgd->aid);
if (directed_tim) {
if (local->hw.conf.dynamic_ps_timeout > 0) {
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
@@ -1930,6 +2181,7 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_managed *ifmgd;
u32 hw_flags;
ifmgd = &sdata->u.mgd;
INIT_WORK(&ifmgd->work, ieee80211_sta_work);
@@ -1949,6 +2201,13 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (sdata->local->hw.queues >= 4)
ifmgd->flags |= IEEE80211_STA_WMM_ENABLED;
hw_flags = sdata->local->hw.flags;
if (hw_flags & IEEE80211_HW_SUPPORTS_PS) {
ifmgd->powersave = CONFIG_MAC80211_DEFAULT_PS_VALUE;
sdata->local->hw.conf.dynamic_ps_timeout = 500;
}
}
/* configuration hooks */
@@ -2068,9 +2327,6 @@ int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason
printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
ieee80211_set_disassoc(sdata, true, true, reason);
return 0;
}
@@ -2082,9 +2338,6 @@ int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EINVAL;
if (!(ifmgd->flags & IEEE80211_STA_ASSOCIATED))
return -ENOLINK;
@@ -2104,75 +2357,17 @@ void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
rcu_read_unlock();
}
void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy)
{
s32 latency_usec = (s32) data;
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_disable_work);
container_of(nb, struct ieee80211_local,
network_latency_notifier);
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
mutex_lock(&local->iflist_mtx);
ieee80211_recalc_ps(local, latency_usec);
mutex_unlock(&local->iflist_mtx);
ieee80211_wake_queues_by_reason(&local->hw,
IEEE80211_QUEUE_STOP_REASON_PS);
}
void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local,
dynamic_ps_enable_work);
/* XXX: using scan_sdata is completely broken! */
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
if (local->hw.conf.flags & IEEE80211_CONF_PS)
return;
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK && sdata)
ieee80211_send_nullfunc(local, sdata, 1);
local->hw.conf.flags |= IEEE80211_CONF_PS;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
void ieee80211_dynamic_ps_timer(unsigned long data)
{
struct ieee80211_local *local = (void *) data;
queue_work(local->hw.workqueue, &local->dynamic_ps_enable_work);
}
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
int powersave)
{
struct sk_buff *skb;
struct ieee80211_hdr *nullfunc;
__le16 fc;
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
return;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for nullfunc "
"frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
nullfunc = (struct ieee80211_hdr *) skb_put(skb, 24);
memset(nullfunc, 0, 24);
fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_TODS);
if (powersave)
fc |= cpu_to_le16(IEEE80211_FCTL_PM);
nullfunc->frame_control = fc;
memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
memcpy(nullfunc->addr2, sdata->dev->dev_addr, ETH_ALEN);
memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
ieee80211_tx_skb(sdata, skb, 0);
return 0;
}

121
net/mac80211/pm.c
View File

@@ -72,119 +72,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
return 0;
}
int __ieee80211_resume(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_init_conf conf;
struct sta_info *sta;
unsigned long flags;
int res;
/* restart hardware */
if (local->open_count) {
res = local->ops->start(hw);
ieee80211_led_radio(local, hw->conf.radio_enabled);
}
/* add interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_MONITOR &&
netif_running(sdata->dev)) {
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = sdata->dev->dev_addr;
res = local->ops->add_interface(hw, &conf);
}
}
/* add STAs back */
if (local->ops->sta_notify) {
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry(sta, &local->sta_list, list) {
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
sdata = container_of(sdata->bss,
struct ieee80211_sub_if_data,
u.ap);
local->ops->sta_notify(hw, &sdata->vif,
STA_NOTIFY_ADD, &sta->sta);
}
spin_unlock_irqrestore(&local->sta_lock, flags);
}
/* Clear Suspend state so that ADDBA requests can be processed */
rcu_read_lock();
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
list_for_each_entry_rcu(sta, &local->sta_list, list) {
clear_sta_flags(sta, WLAN_STA_SUSPEND);
}
}
rcu_read_unlock();
/* add back keys */
list_for_each_entry(sdata, &local->interfaces, list)
if (netif_running(sdata->dev))
ieee80211_enable_keys(sdata);
/* setup RTS threshold */
if (local->ops->set_rts_threshold)
local->ops->set_rts_threshold(hw, local->rts_threshold);
/* reconfigure hardware */
ieee80211_hw_config(local, ~0);
netif_addr_lock_bh(local->mdev);
ieee80211_configure_filter(local);
netif_addr_unlock_bh(local->mdev);
/* Finally also reconfigure all the BSS information */
list_for_each_entry(sdata, &local->interfaces, list) {
u32 changed = ~0;
if (!netif_running(sdata->dev))
continue;
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
/* disable beacon change bits */
changed &= ~IEEE80211_IFCC_BEACON;
/* fall through */
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_MESH_POINT:
/*
* Driver's config_interface can fail if rfkill is
* enabled. Accommodate this return code.
* FIXME: When mac80211 has knowledge of rfkill
* state the code below can change back to:
* WARN(ieee80211_if_config(sdata, changed));
* ieee80211_bss_info_change_notify(sdata, ~0);
*/
if (ieee80211_if_config(sdata, changed))
printk(KERN_DEBUG "%s: failed to configure interface during resume\n",
sdata->dev->name);
else
ieee80211_bss_info_change_notify(sdata, ~0);
break;
case NL80211_IFTYPE_WDS:
break;
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MONITOR:
/* ignore virtual */
break;
case NL80211_IFTYPE_UNSPECIFIED:
case __NL80211_IFTYPE_AFTER_LAST:
WARN_ON(1);
break;
}
}
ieee80211_wake_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);
return 0;
}
/*
* __ieee80211_resume() is a static inline which just calls
* ieee80211_reconfig(), which is also needed for hardware
* hang/firmware failure/etc. recovery.
*/

2
net/mac80211/rx.c
View File

@@ -1932,7 +1932,7 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev,
!ieee80211_is_auth(hdr->frame_control))
goto ignore;
mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr);
mac80211_ev_michael_mic_failure(rx->sdata, keyidx, hdr, NULL);
ignore:
dev_kfree_skb(rx->skb);
rx->skb = NULL;

28
net/mac80211/scan.c
View File

@@ -253,7 +253,7 @@ static void ieee80211_scan_ps_disable(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
if (!local->powersave)
if (!local->ps_sdata)
ieee80211_send_nullfunc(local, sdata, 0);
else {
/*
@@ -285,12 +285,16 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
if (WARN_ON(!local->scan_req))
return;
if (local->hw_scanning) {
kfree(local->scan_req->ie);
local->scan_req->ie = local->orig_ies;
local->scan_req->ie_len = local->orig_ies_len;
}
if (local->scan_req != &local->int_scan_req)
cfg80211_scan_done(local->scan_req, aborted);
local->scan_req = NULL;
local->last_scan_completed = jiffies;
if (local->hw_scanning) {
local->hw_scanning = false;
/*
@@ -457,12 +461,28 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
}
if (local->ops->hw_scan) {
int rc;
u8 *ies;
int rc, ielen;
ies = kmalloc(2 + IEEE80211_MAX_SSID_LEN +
local->scan_ies_len + req->ie_len, GFP_KERNEL);
if (!ies)
return -ENOMEM;
ielen = ieee80211_build_preq_ies(local, ies,
req->ie, req->ie_len);
local->orig_ies = req->ie;
local->orig_ies_len = req->ie_len;
req->ie = ies;
req->ie_len = ielen;
local->hw_scanning = true;
rc = local->ops->hw_scan(local_to_hw(local), req);
if (rc) {
local->hw_scanning = false;
kfree(ies);
req->ie_len = local->orig_ies_len;
req->ie = local->orig_ies;
return rc;
}
local->scan_sdata = scan_sdata;

2
net/mac80211/spectmgmt.c
View File

@@ -15,7 +15,7 @@
*/
#include <linux/ieee80211.h>
#include <net/wireless.h>
#include <net/cfg80211.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "sta_info.h"

71
net/mac80211/sta_info.c
View File

@@ -686,41 +686,10 @@ static void sta_info_debugfs_add_work(struct work_struct *work)
}
#endif
static void __ieee80211_run_pending_flush(struct ieee80211_local *local)
{
struct sta_info *sta;
unsigned long flags;
ASSERT_RTNL();
spin_lock_irqsave(&local->sta_lock, flags);
while (!list_empty(&local->sta_flush_list)) {
sta = list_first_entry(&local->sta_flush_list,
struct sta_info, list);
list_del(&sta->list);
spin_unlock_irqrestore(&local->sta_lock, flags);
sta_info_destroy(sta);
spin_lock_irqsave(&local->sta_lock, flags);
}
spin_unlock_irqrestore(&local->sta_lock, flags);
}
static void ieee80211_sta_flush_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, sta_flush_work);
rtnl_lock();
__ieee80211_run_pending_flush(local);
rtnl_unlock();
}
void sta_info_init(struct ieee80211_local *local)
{
spin_lock_init(&local->sta_lock);
INIT_LIST_HEAD(&local->sta_list);
INIT_LIST_HEAD(&local->sta_flush_list);
INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work);
setup_timer(&local->sta_cleanup, sta_info_cleanup,
(unsigned long)local);
@@ -741,7 +710,6 @@ int sta_info_start(struct ieee80211_local *local)
void sta_info_stop(struct ieee80211_local *local)
{
del_timer(&local->sta_cleanup);
cancel_work_sync(&local->sta_flush_work);
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* Make sure the debugfs adding work isn't pending after this
@@ -752,10 +720,7 @@ void sta_info_stop(struct ieee80211_local *local)
cancel_work_sync(&local->sta_debugfs_add);
#endif
rtnl_lock();
sta_info_flush(local, NULL);
__ieee80211_run_pending_flush(local);
rtnl_unlock();
}
/**
@@ -767,7 +732,7 @@ void sta_info_stop(struct ieee80211_local *local)
* @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs
*/
int sta_info_flush(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
struct ieee80211_sub_if_data *sdata)
{
struct sta_info *sta, *tmp;
LIST_HEAD(tmp_list);
@@ -775,7 +740,6 @@ int sta_info_flush(struct ieee80211_local *local,
unsigned long flags;
might_sleep();
ASSERT_RTNL();
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
@@ -795,39 +759,6 @@ int sta_info_flush(struct ieee80211_local *local,
return ret;
}
/**
* sta_info_flush_delayed - flush matching STA entries from the STA table
*
* This function unlinks all stations for a given interface and queues
* them for freeing. Note that the workqueue function scheduled here has
* to run before any new keys can be added to the system to avoid set_key()
* callback ordering issues.
*
* @sdata: the interface
*/
void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta, *tmp;
unsigned long flags;
bool work = false;
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
if (sdata == sta->sdata) {
__sta_info_unlink(&sta);
if (sta) {
list_add_tail(&sta->list,
&local->sta_flush_list);
work = true;
}
}
}
if (work)
schedule_work(&local->sta_flush_work);
spin_unlock_irqrestore(&local->sta_lock, flags);
}
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time)
{

3
net/mac80211/sta_info.h
View File

@@ -442,8 +442,7 @@ void sta_info_init(struct ieee80211_local *local);
int sta_info_start(struct ieee80211_local *local);
void sta_info_stop(struct ieee80211_local *local);
int sta_info_flush(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata);
struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time);

35
net/mac80211/tx.c
View File

@@ -409,8 +409,24 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
sta->sta.addr);
}
#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
clear_sta_flags(sta, WLAN_STA_PSPOLL);
if (test_and_clear_sta_flags(sta, WLAN_STA_PSPOLL)) {
/*
* The sleeping station with pending data is now snoozing.
* It queried us for its buffered frames and will go back
* to deep sleep once it got everything.
*
* inform the driver, in case the hardware does powersave
* frame filtering and keeps a station blacklist on its own
* (e.g: p54), so that frames can be delivered unimpeded.
*
* Note: It should be save to disable the filter now.
* As, it is really unlikely that we still have any pending
* frame for this station in the hw's buffers/fifos left,
* that is not rejected with a unsuccessful tx_status yet.
*/
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
}
return TX_CONTINUE;
}
@@ -429,7 +445,7 @@ ieee80211_tx_h_ps_buf(struct ieee80211_tx_data *tx)
static ieee80211_tx_result debug_noinline
ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
{
struct ieee80211_key *key;
struct ieee80211_key *key = NULL;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
@@ -500,7 +516,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
sband = tx->local->hw.wiphy->bands[tx->channel->band];
len = min_t(int, tx->skb->len + FCS_LEN,
tx->local->fragmentation_threshold);
tx->local->hw.wiphy->frag_threshold);
/* set up the tx rate control struct we give the RC algo */
txrc.hw = local_to_hw(tx->local);
@@ -511,8 +527,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
txrc.max_rate_idx = tx->sdata->max_ratectrl_rateidx;
/* set up RTS protection if desired */
if (tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD &&
len > tx->local->rts_threshold) {
if (len > tx->local->hw.wiphy->rts_threshold) {
txrc.rts = rts = true;
}
@@ -754,7 +769,7 @@ ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx)
struct sk_buff *skb = tx->skb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (void *)skb->data;
int frag_threshold = tx->local->fragmentation_threshold;
int frag_threshold = tx->local->hw.wiphy->frag_threshold;
int hdrlen;
int fragnum;
@@ -1072,7 +1087,7 @@ __ieee80211_tx_prepare(struct ieee80211_tx_data *tx,
if (tx->flags & IEEE80211_TX_FRAGMENTED) {
if ((tx->flags & IEEE80211_TX_UNICAST) &&
skb->len + FCS_LEN > local->fragmentation_threshold &&
skb->len + FCS_LEN > local->hw.wiphy->frag_threshold &&
!(info->flags & IEEE80211_TX_CTL_AMPDU))
tx->flags |= IEEE80211_TX_FRAGMENTED;
else
@@ -2086,18 +2101,18 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_hdr *hdr;
struct sk_buff *presp = rcu_dereference(ifibss->presp);
if (!ifibss->probe_resp)
if (!presp)
goto out;
skb = skb_copy(ifibss->probe_resp, GFP_ATOMIC);
skb = skb_copy(presp, GFP_ATOMIC);
if (!skb)
goto out;
hdr = (struct ieee80211_hdr *) skb->data;
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_BEACON);
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
struct ieee80211_mgmt *mgmt;
u8 *pos;

240
net/mac80211/util.c
View File

@@ -20,6 +20,7 @@
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <linux/bitmap.h>
#include <linux/crc32.h>
#include <net/net_namespace.h>
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
@@ -28,6 +29,7 @@
#include "rate.h"
#include "mesh.h"
#include "wme.h"
#include "led.h"
/* privid for wiphys to determine whether they belong to us or not */
void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
@@ -535,9 +537,17 @@ EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems)
{
ieee802_11_parse_elems_crc(start, len, elems, 0, 0);
}
u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
struct ieee802_11_elems *elems,
u64 filter, u32 crc)
{
size_t left = len;
u8 *pos = start;
bool calc_crc = filter != 0;
memset(elems, 0, sizeof(*elems));
elems->ie_start = start;
@@ -551,7 +561,10 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
left -= 2;
if (elen > left)
return;
break;
if (calc_crc && id < 64 && (filter & BIT(id)))
crc = crc32_be(crc, pos - 2, elen + 2);
switch (id) {
case WLAN_EID_SSID:
@@ -575,8 +588,10 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
elems->cf_params_len = elen;
break;
case WLAN_EID_TIM:
elems->tim = pos;
elems->tim_len = elen;
if (elen >= sizeof(struct ieee80211_tim_ie)) {
elems->tim = (void *)pos;
elems->tim_len = elen;
}
break;
case WLAN_EID_IBSS_PARAMS:
elems->ibss_params = pos;
@@ -586,15 +601,20 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
elems->challenge = pos;
elems->challenge_len = elen;
break;
case WLAN_EID_WPA:
case WLAN_EID_VENDOR_SPECIFIC:
if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
pos[2] == 0xf2) {
/* Microsoft OUI (00:50:F2) */
if (calc_crc)
crc = crc32_be(crc, pos - 2, elen + 2);
if (pos[3] == 1) {
/* OUI Type 1 - WPA IE */
elems->wpa = pos;
elems->wpa_len = elen;
} else if (elen >= 5 && pos[3] == 2) {
/* OUI Type 2 - WMM IE */
if (pos[4] == 0) {
elems->wmm_info = pos;
elems->wmm_info_len = elen;
@@ -679,6 +699,8 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
left -= elen;
pos += elen;
}
return crc;
}
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
@@ -831,16 +853,73 @@ void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
ieee80211_tx_skb(sdata, skb, encrypt);
}
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
const u8 *ie, size_t ie_len)
{
struct ieee80211_supported_band *sband;
u8 *pos, *supp_rates_len, *esupp_rates_len = NULL;
int i;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
pos = buffer;
*pos++ = WLAN_EID_SUPP_RATES;
supp_rates_len = pos;
*pos++ = 0;
for (i = 0; i < sband->n_bitrates; i++) {
struct ieee80211_rate *rate = &sband->bitrates[i];
if (esupp_rates_len) {
*esupp_rates_len += 1;
} else if (*supp_rates_len == 8) {
*pos++ = WLAN_EID_EXT_SUPP_RATES;
esupp_rates_len = pos;
*pos++ = 1;
} else
*supp_rates_len += 1;
*pos++ = rate->bitrate / 5;
}
if (sband->ht_cap.ht_supported) {
__le16 tmp = cpu_to_le16(sband->ht_cap.cap);
*pos++ = WLAN_EID_HT_CAPABILITY;
*pos++ = sizeof(struct ieee80211_ht_cap);
memset(pos, 0, sizeof(struct ieee80211_ht_cap));
memcpy(pos, &tmp, sizeof(u16));
pos += sizeof(u16);
/* TODO: needs a define here for << 2 */
*pos++ = sband->ht_cap.ampdu_factor |
(sband->ht_cap.ampdu_density << 2);
memcpy(pos, &sband->ht_cap.mcs, sizeof(sband->ht_cap.mcs));
pos += sizeof(sband->ht_cap.mcs);
pos += 2 + 4 + 1; /* ext info, BF cap, antsel */
}
/*
* If adding more here, adjust code in main.c
* that calculates local->scan_ies_len.
*/
if (ie) {
memcpy(pos, ie, ie_len);
pos += ie_len;
}
return pos - buffer;
}
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len,
u8 *ie, size_t ie_len)
const u8 *ssid, size_t ssid_len,
const u8 *ie, size_t ie_len)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos, *supp_rates, *esupp_rates = NULL;
int i;
u8 *pos;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 +
ie_len);
@@ -867,31 +946,9 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
*pos++ = WLAN_EID_SSID;
*pos++ = ssid_len;
memcpy(pos, ssid, ssid_len);
pos += ssid_len;
supp_rates = skb_put(skb, 2);
supp_rates[0] = WLAN_EID_SUPP_RATES;
supp_rates[1] = 0;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
for (i = 0; i < sband->n_bitrates; i++) {
struct ieee80211_rate *rate = &sband->bitrates[i];
if (esupp_rates) {
pos = skb_put(skb, 1);
esupp_rates[1]++;
} else if (supp_rates[1] == 8) {
esupp_rates = skb_put(skb, 3);
esupp_rates[0] = WLAN_EID_EXT_SUPP_RATES;
esupp_rates[1] = 1;
pos = &esupp_rates[2];
} else {
pos = skb_put(skb, 1);
supp_rates[1]++;
}
*pos = rate->bitrate / 5;
}
if (ie)
memcpy(skb_put(skb, ie_len), ie, ie_len);
skb_put(skb, ieee80211_build_preq_ies(local, pos, ie, ie_len));
ieee80211_tx_skb(sdata, skb, 0);
}
@@ -931,3 +988,120 @@ u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
}
return supp_rates;
}
int ieee80211_reconfig(struct ieee80211_local *local)
{
struct ieee80211_hw *hw = &local->hw;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_init_conf conf;
struct sta_info *sta;
unsigned long flags;
int res;
/* restart hardware */
if (local->open_count) {
res = local->ops->start(hw);
ieee80211_led_radio(local, hw->conf.radio_enabled);
}
/* add interfaces */
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_MONITOR &&
netif_running(sdata->dev)) {
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;
conf.mac_addr = sdata->dev->dev_addr;
res = local->ops->add_interface(hw, &conf);
}
}
/* add STAs back */
if (local->ops->sta_notify) {
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry(sta, &local->sta_list, list) {
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
sdata = container_of(sdata->bss,
struct ieee80211_sub_if_data,
u.ap);
local->ops->sta_notify(hw, &sdata->vif,
STA_NOTIFY_ADD, &sta->sta);
}
spin_unlock_irqrestore(&local->sta_lock, flags);
}
/* Clear Suspend state so that ADDBA requests can be processed */
rcu_read_lock();
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
list_for_each_entry_rcu(sta, &local->sta_list, list) {
clear_sta_flags(sta, WLAN_STA_SUSPEND);
}
}
rcu_read_unlock();
/* setup RTS threshold */
if (local->ops->set_rts_threshold)
local->ops->set_rts_threshold(hw, hw->wiphy->rts_threshold);
/* reconfigure hardware */
ieee80211_hw_config(local, ~0);
netif_addr_lock_bh(local->mdev);
ieee80211_configure_filter(local);
netif_addr_unlock_bh(local->mdev);
/* Finally also reconfigure all the BSS information */
list_for_each_entry(sdata, &local->interfaces, list) {
u32 changed = ~0;
if (!netif_running(sdata->dev))
continue;
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
/* disable beacon change bits */
changed &= ~IEEE80211_IFCC_BEACON;
/* fall through */
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_MESH_POINT:
/*
* Driver's config_interface can fail if rfkill is
* enabled. Accommodate this return code.
* FIXME: When mac80211 has knowledge of rfkill
* state the code below can change back to:
* WARN(ieee80211_if_config(sdata, changed));
* ieee80211_bss_info_change_notify(sdata, ~0);
*/
if (ieee80211_if_config(sdata, changed))
printk(KERN_DEBUG "%s: failed to configure interface during resume\n",
sdata->dev->name);
else
ieee80211_bss_info_change_notify(sdata, ~0);
break;
case NL80211_IFTYPE_WDS:
break;
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MONITOR:
/* ignore virtual */
break;
case NL80211_IFTYPE_UNSPECIFIED:
case __NL80211_IFTYPE_AFTER_LAST:
WARN_ON(1);
break;
}
}
/* add back keys */
list_for_each_entry(sdata, &local->interfaces, list)
if (netif_running(sdata->dev))
ieee80211_enable_keys(sdata);
ieee80211_wake_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);
return 0;
}

270
net/mac80211/wext.c
View File

@@ -149,17 +149,14 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL;
return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
if (freq->e == 0) {
if (freq->m < 0) {
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->u.ibss.flags |=
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags |=
IEEE80211_STA_AUTO_CHANNEL_SEL;
return 0;
@@ -183,6 +180,10 @@ static int ieee80211_ioctl_giwfreq(struct net_device *dev,
struct iw_freq *freq, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
freq->m = local->hw.conf.channel->center_freq;
freq->e = 6;
@@ -195,15 +196,17 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
size_t len = data->length;
int ret;
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
/* iwconfig uses nul termination in SSID.. */
if (len > 0 && ssid[len - 1] == '\0')
len--;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (data->flags)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
@@ -217,8 +220,7 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev,
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return ieee80211_ibss_set_ssid(sdata, ssid, len);
}
return -EOPNOTSUPP;
}
@@ -229,9 +231,13 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
size_t len;
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
if (res == 0) {
@@ -240,14 +246,6 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev,
} else
data->flags = 0;
return res;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
int res = ieee80211_ibss_get_ssid(sdata, ssid, &len);
if (res == 0) {
data->length = len;
data->flags = 1;
} else
data->flags = 0;
return res;
}
return -EOPNOTSUPP;
@@ -258,9 +256,11 @@ static int ieee80211_ioctl_siwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int ret;
@@ -277,16 +277,6 @@ static int ieee80211_ioctl_siwap(struct net_device *dev,
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL;
else
sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL;
return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
/*
* If it is necessary to update the WDS peer address
@@ -312,9 +302,11 @@ static int ieee80211_ioctl_giwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
ap_addr->sa_family = ARPHRD_ETHER;
@@ -322,13 +314,6 @@ static int ieee80211_ioctl_giwap(struct net_device *dev,
} else
memset(&ap_addr->sa_data, 0, ETH_ALEN);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN);
} else
memset(&ap_addr->sa_data, 0, ETH_ALEN);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);
@@ -487,155 +472,6 @@ static int ieee80211_ioctl_giwtxpower(struct net_device *dev,
return 0;
}
static int ieee80211_ioctl_siwrts(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rts, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (rts->disabled)
local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
else if (!rts->fixed)
/* if the rts value is not fixed, then take default */
local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
else if (rts->value < 0 || rts->value > IEEE80211_MAX_RTS_THRESHOLD)
return -EINVAL;
else
local->rts_threshold = rts->value;
/* If the wlan card performs RTS/CTS in hardware/firmware,
* configure it here */
if (local->ops->set_rts_threshold)
local->ops->set_rts_threshold(local_to_hw(local),
local->rts_threshold);
return 0;
}
static int ieee80211_ioctl_giwrts(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *rts, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
rts->value = local->rts_threshold;
rts->disabled = (rts->value >= IEEE80211_MAX_RTS_THRESHOLD);
rts->fixed = 1;
return 0;
}
static int ieee80211_ioctl_siwfrag(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *frag, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (frag->disabled)
local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
else if (!frag->fixed)
local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
else if (frag->value < 256 ||
frag->value > IEEE80211_MAX_FRAG_THRESHOLD)
return -EINVAL;
else {
/* Fragment length must be even, so strip LSB. */
local->fragmentation_threshold = frag->value & ~0x1;
}
return 0;
}
static int ieee80211_ioctl_giwfrag(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *frag, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
frag->value = local->fragmentation_threshold;
frag->disabled = (frag->value >= IEEE80211_MAX_FRAG_THRESHOLD);
frag->fixed = 1;
return 0;
}
static int ieee80211_ioctl_siwretry(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *retry, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (retry->disabled ||
(retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
return -EINVAL;
if (retry->flags & IW_RETRY_MAX) {
local->hw.conf.long_frame_max_tx_count = retry->value;
} else if (retry->flags & IW_RETRY_MIN) {
local->hw.conf.short_frame_max_tx_count = retry->value;
} else {
local->hw.conf.long_frame_max_tx_count = retry->value;
local->hw.conf.short_frame_max_tx_count = retry->value;
}
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
return 0;
}
static int ieee80211_ioctl_giwretry(struct net_device *dev,
struct iw_request_info *info,
struct iw_param *retry, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
retry->disabled = 0;
if (retry->flags == 0 || retry->flags & IW_RETRY_MIN) {
/* first return min value, iwconfig will ask max value
* later if needed */
retry->flags |= IW_RETRY_LIMIT;
retry->value = local->hw.conf.short_frame_max_tx_count;
if (local->hw.conf.long_frame_max_tx_count !=
local->hw.conf.short_frame_max_tx_count)
retry->flags |= IW_RETRY_MIN;
return 0;
}
if (retry->flags & IW_RETRY_MAX) {
retry->flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
retry->value = local->hw.conf.long_frame_max_tx_count;
}
return 0;
}
static int ieee80211_ioctl_siwmlme(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *extra)
{
struct ieee80211_sub_if_data *sdata;
struct iw_mlme *mlme = (struct iw_mlme *) extra;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (!(sdata->vif.type == NL80211_IFTYPE_STATION))
return -EINVAL;
switch (mlme->cmd) {
case IW_MLME_DEAUTH:
/* TODO: mlme->addr.sa_data */
return ieee80211_sta_deauthenticate(sdata, mlme->reason_code);
case IW_MLME_DISASSOC:
/* TODO: mlme->addr.sa_data */
return ieee80211_sta_disassociate(sdata, mlme->reason_code);
default:
return -EOPNOTSUPP;
}
}
static int ieee80211_ioctl_siwencode(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *erq, char *keybuf)
@@ -675,7 +511,7 @@ static int ieee80211_ioctl_siwencode(struct net_device *dev,
!sdata->default_key,
keybuf, erq->length);
if (!ret) {
if (!ret && sdata->vif.type == NL80211_IFTYPE_STATION) {
if (remove)
sdata->u.mgd.flags &= ~IEEE80211_STA_TKIP_WEP_USED;
else
@@ -747,7 +583,7 @@ static int ieee80211_ioctl_siwpower(struct net_device *dev,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_conf *conf = &local->hw.conf;
int ret = 0, timeout = 0;
int timeout = 0;
bool ps;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
@@ -779,42 +615,18 @@ static int ieee80211_ioctl_siwpower(struct net_device *dev,
timeout = wrq->value / 1000;
set:
if (ps == local->powersave && timeout == conf->dynamic_ps_timeout)
return ret;
if (ps == sdata->u.mgd.powersave && timeout == conf->dynamic_ps_timeout)
return 0;
local->powersave = ps;
sdata->u.mgd.powersave = ps;
conf->dynamic_ps_timeout = timeout;
if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
ret = ieee80211_hw_config(local,
IEEE80211_CONF_CHANGE_DYNPS_TIMEOUT);
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
if (!(sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED))
return ret;
ieee80211_recalc_ps(local, -1);
if (conf->dynamic_ps_timeout > 0 &&
!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
mod_timer(&local->dynamic_ps_timer, jiffies +
msecs_to_jiffies(conf->dynamic_ps_timeout));
} else {
if (local->powersave) {
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 1);
conf->flags |= IEEE80211_CONF_PS;
ret = ieee80211_hw_config(local,
IEEE80211_CONF_CHANGE_PS);
} else {
conf->flags &= ~IEEE80211_CONF_PS;
ret = ieee80211_hw_config(local,
IEEE80211_CONF_CHANGE_PS);
if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
ieee80211_send_nullfunc(local, sdata, 0);
del_timer_sync(&local->dynamic_ps_timer);
cancel_work_sync(&local->dynamic_ps_enable_work);
}
}
return ret;
return 0;
}
static int ieee80211_ioctl_giwpower(struct net_device *dev,
@@ -822,9 +634,9 @@ static int ieee80211_ioctl_giwpower(struct net_device *dev,
union iwreq_data *wrqu,
char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
wrqu->power.disabled = !local->powersave;
wrqu->power.disabled = !sdata->u.mgd.powersave;
return 0;
}
@@ -1099,7 +911,7 @@ static const iw_handler ieee80211_handler[] =
(iw_handler) NULL, /* SIOCGIWTHRSPY */
(iw_handler) ieee80211_ioctl_siwap, /* SIOCSIWAP */
(iw_handler) ieee80211_ioctl_giwap, /* SIOCGIWAP */
(iw_handler) ieee80211_ioctl_siwmlme, /* SIOCSIWMLME */
(iw_handler) cfg80211_wext_siwmlme, /* SIOCSIWMLME */
(iw_handler) NULL, /* SIOCGIWAPLIST */
(iw_handler) cfg80211_wext_siwscan, /* SIOCSIWSCAN */
(iw_handler) cfg80211_wext_giwscan, /* SIOCGIWSCAN */
@@ -1111,14 +923,14 @@ static const iw_handler ieee80211_handler[] =
(iw_handler) NULL, /* -- hole -- */
(iw_handler) ieee80211_ioctl_siwrate, /* SIOCSIWRATE */
(iw_handler) ieee80211_ioctl_giwrate, /* SIOCGIWRATE */
(iw_handler) ieee80211_ioctl_siwrts, /* SIOCSIWRTS */
(iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */
(iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */
(iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */
(iw_handler) cfg80211_wext_siwrts, /* SIOCSIWRTS */
(iw_handler) cfg80211_wext_giwrts, /* SIOCGIWRTS */
(iw_handler) cfg80211_wext_siwfrag, /* SIOCSIWFRAG */
(iw_handler) cfg80211_wext_giwfrag, /* SIOCGIWFRAG */
(iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */
(iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */
(iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */
(iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */
(iw_handler) cfg80211_wext_siwretry, /* SIOCSIWRETRY */
(iw_handler) cfg80211_wext_giwretry, /* SIOCGIWRETRY */
(iw_handler) ieee80211_ioctl_siwencode, /* SIOCSIWENCODE */
(iw_handler) ieee80211_ioctl_giwencode, /* SIOCGIWENCODE */
(iw_handler) ieee80211_ioctl_siwpower, /* SIOCSIWPOWER */

2
net/mac80211/wpa.c
View File

@@ -122,7 +122,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
return RX_DROP_UNUSABLE;
mac80211_ev_michael_mic_failure(rx->sdata, rx->key->conf.keyidx,
(void *) skb->data);
(void *) skb->data, NULL);
return RX_DROP_UNUSABLE;
}