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-rw-r--r--net/mac80211/mlme.c1712
1 files changed, 1175 insertions, 537 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 295be92f7c7..576fb25456d 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -30,6 +30,12 @@
#include "rate.h"
#include "led.h"
+#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
+#define IEEE80211_AUTH_MAX_TRIES 3
+#define IEEE80211_AUTH_WAIT_ASSOC (HZ * 5)
+#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
+#define IEEE80211_ASSOC_MAX_TRIES 3
+
static int max_nullfunc_tries = 2;
module_param(max_nullfunc_tries, int, 0644);
MODULE_PARM_DESC(max_nullfunc_tries,
@@ -82,6 +88,8 @@ MODULE_PARM_DESC(probe_wait_ms,
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
+#define DEAUTH_DISASSOC_LEN (24 /* hdr */ + 2 /* reason */)
+
/*
* All cfg80211 functions have to be called outside a locked
* section so that they can acquire a lock themselves... This
@@ -97,6 +105,15 @@ enum rx_mgmt_action {
/* caller must call cfg80211_send_disassoc() */
RX_MGMT_CFG80211_DISASSOC,
+
+ /* caller must call cfg80211_send_rx_auth() */
+ RX_MGMT_CFG80211_RX_AUTH,
+
+ /* caller must call cfg80211_send_rx_assoc() */
+ RX_MGMT_CFG80211_RX_ASSOC,
+
+ /* caller must call cfg80211_send_assoc_timeout() */
+ RX_MGMT_CFG80211_ASSOC_TIMEOUT,
};
/* utils */
@@ -115,8 +132,7 @@ static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
* has happened -- the work that runs from this timer will
* do that.
*/
-static void run_again(struct ieee80211_if_managed *ifmgd,
- unsigned long timeout)
+static void run_again(struct ieee80211_if_managed *ifmgd, unsigned long timeout)
{
ASSERT_MGD_MTX(ifmgd);
@@ -127,7 +143,7 @@ static void run_again(struct ieee80211_if_managed *ifmgd,
void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
{
- if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER)
+ if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
return;
mod_timer(&sdata->u.mgd.bcn_mon_timer,
@@ -173,40 +189,35 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
u16 ht_opmode;
bool enable_ht = true;
enum nl80211_channel_type prev_chantype;
- enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
+ enum nl80211_channel_type rx_channel_type = NL80211_CHAN_NO_HT;
+ enum nl80211_channel_type tx_channel_type;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
-
prev_chantype = sdata->vif.bss_conf.channel_type;
- /* HT is not supported */
- if (!sband->ht_cap.ht_supported)
- enable_ht = false;
- if (enable_ht) {
- hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan,
- sband->band);
- /* check that channel matches the right operating channel */
- if (local->hw.conf.channel->center_freq != hti_cfreq) {
- /* Some APs mess this up, evidently.
- * Netgear WNDR3700 sometimes reports 4 higher than
- * the actual channel, for instance.
- */
- printk(KERN_DEBUG
- "%s: Wrong control channel in association"
- " response: configured center-freq: %d"
- " hti-cfreq: %d hti->control_chan: %d"
- " band: %d. Disabling HT.\n",
- sdata->name,
- local->hw.conf.channel->center_freq,
- hti_cfreq, hti->control_chan,
- sband->band);
- enable_ht = false;
- }
+ hti_cfreq = ieee80211_channel_to_frequency(hti->control_chan,
+ sband->band);
+ /* check that channel matches the right operating channel */
+ if (local->hw.conf.channel->center_freq != hti_cfreq) {
+ /* Some APs mess this up, evidently.
+ * Netgear WNDR3700 sometimes reports 4 higher than
+ * the actual channel, for instance.
+ */
+ printk(KERN_DEBUG
+ "%s: Wrong control channel in association"
+ " response: configured center-freq: %d"
+ " hti-cfreq: %d hti->control_chan: %d"
+ " band: %d. Disabling HT.\n",
+ sdata->name,
+ local->hw.conf.channel->center_freq,
+ hti_cfreq, hti->control_chan,
+ sband->band);
+ enable_ht = false;
}
if (enable_ht) {
- channel_type = NL80211_CHAN_HT20;
+ rx_channel_type = NL80211_CHAN_HT20;
if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
!ieee80111_cfg_override_disables_ht40(sdata) &&
@@ -214,29 +225,28 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
(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:
- if (!(local->hw.conf.channel->flags &
- IEEE80211_CHAN_NO_HT40PLUS))
- channel_type = NL80211_CHAN_HT40PLUS;
+ rx_channel_type = NL80211_CHAN_HT40PLUS;
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
- if (!(local->hw.conf.channel->flags &
- IEEE80211_CHAN_NO_HT40MINUS))
- channel_type = NL80211_CHAN_HT40MINUS;
+ rx_channel_type = NL80211_CHAN_HT40MINUS;
break;
}
}
}
+ tx_channel_type = ieee80211_get_tx_channel_type(local, rx_channel_type);
+
if (local->tmp_channel)
- local->tmp_channel_type = channel_type;
+ local->tmp_channel_type = rx_channel_type;
- if (!ieee80211_set_channel_type(local, sdata, channel_type)) {
+ if (!ieee80211_set_channel_type(local, sdata, rx_channel_type)) {
/* can only fail due to HT40+/- mismatch */
- channel_type = NL80211_CHAN_HT20;
- WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
+ rx_channel_type = NL80211_CHAN_HT20;
+ WARN_ON(!ieee80211_set_channel_type(local, sdata,
+ rx_channel_type));
}
- if (beacon_htcap_ie && (prev_chantype != channel_type)) {
+ if (beacon_htcap_ie && (prev_chantype != rx_channel_type)) {
/*
* Whenever the AP announces the HT mode change that can be
* 40MHz intolerant or etc., it would be safer to stop tx
@@ -254,13 +264,13 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
/* channel_type change automatically detected */
ieee80211_hw_config(local, 0);
- if (prev_chantype != channel_type) {
+ if (prev_chantype != tx_channel_type) {
rcu_read_lock();
sta = sta_info_get(sdata, bssid);
if (sta)
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED,
- channel_type);
+ tx_channel_type);
rcu_read_unlock();
if (beacon_htcap_ie)
@@ -273,7 +283,7 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
/* if bss configuration changed store the new one */
if (sdata->ht_opmode_valid != enable_ht ||
sdata->vif.bss_conf.ht_operation_mode != ht_opmode ||
- prev_chantype != channel_type) {
+ prev_chantype != rx_channel_type) {
changed |= BSS_CHANGED_HT;
sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
sdata->ht_opmode_valid = enable_ht;
@@ -284,48 +294,351 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
/* frame sending functions */
-static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
- const u8 *bssid, u16 stype, u16 reason,
- void *cookie, bool send_frame)
+static int ieee80211_compatible_rates(const u8 *supp_rates, int supp_rates_len,
+ struct ieee80211_supported_band *sband,
+ u32 *rates)
+{
+ int i, j, count;
+ *rates = 0;
+ count = 0;
+ for (i = 0; i < supp_rates_len; i++) {
+ int rate = (supp_rates[i] & 0x7F) * 5;
+
+ for (j = 0; j < sband->n_bitrates; j++)
+ if (sband->bitrates[j].bitrate == rate) {
+ *rates |= BIT(j);
+ count++;
+ break;
+ }
+ }
+
+ return count;
+}
+
+static void ieee80211_add_ht_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb, const u8 *ht_info_ie,
+ struct ieee80211_supported_band *sband,
+ struct ieee80211_channel *channel,
+ enum ieee80211_smps_mode smps)
+{
+ struct ieee80211_ht_info *ht_info;
+ u8 *pos;
+ u32 flags = channel->flags;
+ u16 cap;
+ struct ieee80211_sta_ht_cap ht_cap;
+
+ BUILD_BUG_ON(sizeof(ht_cap) != sizeof(sband->ht_cap));
+
+ if (!ht_info_ie)
+ return;
+
+ if (ht_info_ie[1] < sizeof(struct ieee80211_ht_info))
+ return;
+
+ memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
+ ieee80211_apply_htcap_overrides(sdata, &ht_cap);
+
+ ht_info = (struct ieee80211_ht_info *)(ht_info_ie + 2);
+
+ /* determine capability flags */
+ cap = ht_cap.cap;
+
+ switch (ht_info->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
+ case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
+ if (flags & IEEE80211_CHAN_NO_HT40PLUS) {
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+ break;
+ case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
+ if (flags & IEEE80211_CHAN_NO_HT40MINUS) {
+ cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+ break;
+ }
+
+ /* set SM PS mode properly */
+ cap &= ~IEEE80211_HT_CAP_SM_PS;
+ switch (smps) {
+ case IEEE80211_SMPS_AUTOMATIC:
+ case IEEE80211_SMPS_NUM_MODES:
+ WARN_ON(1);
+ case IEEE80211_SMPS_OFF:
+ cap |= WLAN_HT_CAP_SM_PS_DISABLED <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ case IEEE80211_SMPS_STATIC:
+ cap |= WLAN_HT_CAP_SM_PS_STATIC <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ case IEEE80211_SMPS_DYNAMIC:
+ cap |= WLAN_HT_CAP_SM_PS_DYNAMIC <<
+ IEEE80211_HT_CAP_SM_PS_SHIFT;
+ break;
+ }
+
+ /* reserve and fill IE */
+ pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
+ ieee80211_ie_build_ht_cap(pos, &ht_cap, cap);
+}
+
+static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
+ u8 *pos, qos_info;
+ size_t offset = 0, noffset;
+ int i, count, rates_len, supp_rates_len;
+ u16 capab;
+ struct ieee80211_supported_band *sband;
+ u32 rates = 0;
+
+ lockdep_assert_held(&ifmgd->mtx);
+
+ sband = local->hw.wiphy->bands[local->oper_channel->band];
- skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
+ if (assoc_data->supp_rates_len) {
+ /*
+ * Get all rates supported by the device and the AP as
+ * some APs don't like getting a superset of their rates
+ * in the association request (e.g. D-Link DAP 1353 in
+ * b-only mode)...
+ */
+ rates_len = ieee80211_compatible_rates(assoc_data->supp_rates,
+ assoc_data->supp_rates_len,
+ sband, &rates);
+ } else {
+ /*
+ * In case AP not provide any supported rates information
+ * before association, we send information element(s) with
+ * all rates that we support.
+ */
+ rates = ~0;
+ rates_len = sband->n_bitrates;
+ }
+
+ skb = alloc_skb(local->hw.extra_tx_headroom +
+ sizeof(*mgmt) + /* bit too much but doesn't matter */
+ 2 + assoc_data->ssid_len + /* SSID */
+ 4 + rates_len + /* (extended) rates */
+ 4 + /* power capability */
+ 2 + 2 * sband->n_channels + /* supported channels */
+ 2 + sizeof(struct ieee80211_ht_cap) + /* HT */
+ assoc_data->ie_len + /* extra IEs */
+ 9, /* WMM */
+ GFP_KERNEL);
if (!skb)
return;
skb_reserve(skb, local->hw.extra_tx_headroom);
+ capab = WLAN_CAPABILITY_ESS;
+
+ if (sband->band == IEEE80211_BAND_2GHZ) {
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+ if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
+ capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
+ }
+
+ if (assoc_data->capability & WLAN_CAPABILITY_PRIVACY)
+ capab |= WLAN_CAPABILITY_PRIVACY;
+
+ if ((assoc_data->capability & WLAN_CAPABILITY_SPECTRUM_MGMT) &&
+ (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT))
+ capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
+
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
memset(mgmt, 0, 24);
+ memcpy(mgmt->da, assoc_data->bss->bssid, ETH_ALEN);
+ memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
+ memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
+
+ if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
+ skb_put(skb, 10);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_REASSOC_REQ);
+ mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.reassoc_req.listen_interval =
+ cpu_to_le16(local->hw.conf.listen_interval);
+ memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
+ ETH_ALEN);
+ } else {
+ skb_put(skb, 4);
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ IEEE80211_STYPE_ASSOC_REQ);
+ mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
+ mgmt->u.assoc_req.listen_interval =
+ cpu_to_le16(local->hw.conf.listen_interval);
+ }
+
+ /* SSID */
+ pos = skb_put(skb, 2 + assoc_data->ssid_len);
+ *pos++ = WLAN_EID_SSID;
+ *pos++ = assoc_data->ssid_len;
+ memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
+
+ /* add all rates which were marked to be used above */
+ supp_rates_len = rates_len;
+ if (supp_rates_len > 8)
+ supp_rates_len = 8;
+
+ pos = skb_put(skb, supp_rates_len + 2);
+ *pos++ = WLAN_EID_SUPP_RATES;
+ *pos++ = supp_rates_len;
+
+ count = 0;
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (BIT(i) & rates) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ if (++count == 8)
+ break;
+ }
+ }
+
+ if (rates_len > count) {
+ pos = skb_put(skb, rates_len - count + 2);
+ *pos++ = WLAN_EID_EXT_SUPP_RATES;
+ *pos++ = rates_len - count;
+
+ for (i++; i < sband->n_bitrates; i++) {
+ if (BIT(i) & rates) {
+ int rate = sband->bitrates[i].bitrate;
+ *pos++ = (u8) (rate / 5);
+ }
+ }
+ }
+
+ if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT) {
+ /* 1. power capabilities */
+ pos = skb_put(skb, 4);
+ *pos++ = WLAN_EID_PWR_CAPABILITY;
+ *pos++ = 2;
+ *pos++ = 0; /* min tx power */
+ *pos++ = local->oper_channel->max_power; /* max tx power */
+
+ /* 2. supported channels */
+ /* TODO: get this in reg domain format */
+ pos = skb_put(skb, 2 * sband->n_channels + 2);
+ *pos++ = WLAN_EID_SUPPORTED_CHANNELS;
+ *pos++ = 2 * sband->n_channels;
+ for (i = 0; i < sband->n_channels; i++) {
+ *pos++ = ieee80211_frequency_to_channel(
+ sband->channels[i].center_freq);
+ *pos++ = 1; /* one channel in the subband*/
+ }
+ }
+
+ /* if present, add any custom IEs that go before HT */
+ if (assoc_data->ie_len && assoc_data->ie) {
+ static const u8 before_ht[] = {
+ WLAN_EID_SSID,
+ WLAN_EID_SUPP_RATES,
+ WLAN_EID_EXT_SUPP_RATES,
+ WLAN_EID_PWR_CAPABILITY,
+ WLAN_EID_SUPPORTED_CHANNELS,
+ WLAN_EID_RSN,
+ WLAN_EID_QOS_CAPA,
+ WLAN_EID_RRM_ENABLED_CAPABILITIES,
+ WLAN_EID_MOBILITY_DOMAIN,
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ };
+ noffset = ieee80211_ie_split(assoc_data->ie, assoc_data->ie_len,
+ before_ht, ARRAY_SIZE(before_ht),
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, assoc_data->ie + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
+ ieee80211_add_ht_ie(sdata, skb, assoc_data->ht_information_ie,
+ sband, local->oper_channel, ifmgd->ap_smps);
+
+ /* if present, add any custom non-vendor IEs that go after HT */
+ if (assoc_data->ie_len && assoc_data->ie) {
+ noffset = ieee80211_ie_split_vendor(assoc_data->ie,
+ assoc_data->ie_len,
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, assoc_data->ie + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ if (assoc_data->wmm) {
+ if (assoc_data->uapsd) {
+ qos_info = ifmgd->uapsd_queues;
+ qos_info |= (ifmgd->uapsd_max_sp_len <<
+ IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT);
+ } else {
+ qos_info = 0;
+ }
+
+ pos = skb_put(skb, 9);
+ *pos++ = WLAN_EID_VENDOR_SPECIFIC;
+ *pos++ = 7; /* len */
+ *pos++ = 0x00; /* Microsoft OUI 00:50:F2 */
+ *pos++ = 0x50;
+ *pos++ = 0xf2;
+ *pos++ = 2; /* WME */
+ *pos++ = 0; /* WME info */
+ *pos++ = 1; /* WME ver */
+ *pos++ = qos_info;
+ }
+
+ /* add any remaining custom (i.e. vendor specific here) IEs */
+ if (assoc_data->ie_len && assoc_data->ie) {
+ noffset = assoc_data->ie_len;
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, assoc_data->ie + offset, noffset - offset);
+ }
+
+ IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ ieee80211_tx_skb(sdata, skb);
+}
+
+static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+ const u8 *bssid, u16 stype,
+ u16 reason, bool send_frame,
+ u8 *frame_buf)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct sk_buff *skb;
+ struct ieee80211_mgmt *mgmt = (void *)frame_buf;
+
+ /* build frame */
+ mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
+ mgmt->duration = 0; /* initialize only */
+ mgmt->seq_ctrl = 0; /* initialize only */
memcpy(mgmt->da, bssid, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt->bssid, bssid, ETH_ALEN);
- mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
- skb_put(skb, 2);
/* u.deauth.reason_code == u.disassoc.reason_code */
mgmt->u.deauth.reason_code = cpu_to_le16(reason);
- if (stype == IEEE80211_STYPE_DEAUTH)
- if (cookie)
- __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
- else
- cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
- else
- if (cookie)
- __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
- else
- cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
- if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED))
- IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
+ if (send_frame) {
+ skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+ DEAUTH_DISASSOC_LEN);
+ if (!skb)
+ return;
- if (send_frame)
+ skb_reserve(skb, local->hw.extra_tx_headroom);
+
+ /* copy in frame */
+ memcpy(skb_put(skb, DEAUTH_DISASSOC_LEN),
+ mgmt, DEAUTH_DISASSOC_LEN);
+
+ if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED))
+ IEEE80211_SKB_CB(skb)->flags |=
+ IEEE80211_TX_INTFL_DONT_ENCRYPT;
ieee80211_tx_skb(sdata, skb);
- else
- kfree_skb(skb);
+ }
}
void ieee80211_send_pspoll(struct ieee80211_local *local,
@@ -547,7 +860,7 @@ static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
if (pwr_constr_elem_len != 1)
return;
- if ((*pwr_constr_elem <= conf->channel->max_power) &&
+ if ((*pwr_constr_elem <= conf->channel->max_reg_power) &&
(*pwr_constr_elem != sdata->local->power_constr_level)) {
sdata->local->power_constr_level = *pwr_constr_elem;
ieee80211_hw_config(sdata->local, 0);
@@ -879,7 +1192,7 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
return;
if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
- uapsd_queues = local->uapsd_queues;
+ uapsd_queues = ifmgd->uapsd_queues;
count = wmm_param[6] & 0x0f;
if (count == ifmgd->wmm_last_param_set)
@@ -953,7 +1266,6 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
/* enable WMM or activate new settings */
sdata->vif.bss_conf.qos = true;
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
}
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
@@ -1006,7 +1318,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
bss_info_changed |= BSS_CHANGED_ASSOC;
/* set timing information */
bss_conf->beacon_int = cbss->beacon_interval;
- bss_conf->timestamp = cbss->tsf;
+ bss_conf->last_tsf = cbss->tsf;
bss_info_changed |= BSS_CHANGED_BEACON_INT;
bss_info_changed |= ieee80211_handle_bss_capability(sdata,
@@ -1032,18 +1344,9 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
bss_conf->dtim_period = 0;
bss_conf->assoc = 1;
- /*
- * For now just always ask the driver to update the basic rateset
- * when we have associated, we aren't checking whether it actually
- * changed or not.
- */
- bss_info_changed |= BSS_CHANGED_BASIC_RATES;
-
- /* And the BSSID changed - we're associated now */
- bss_info_changed |= BSS_CHANGED_BSSID;
/* Tell the driver to monitor connection quality (if supported) */
- if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) &&
+ if (sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI &&
bss_conf->cqm_rssi_thold)
bss_info_changed |= BSS_CHANGED_CQM;
@@ -1065,16 +1368,20 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
}
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
- bool remove_sta, bool tx)
+ u16 stype, u16 reason, bool tx,
+ u8 *frame_buf)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
- u32 changed = 0, config_changed = 0;
+ u32 changed = 0;
u8 bssid[ETH_ALEN];
ASSERT_MGD_MTX(ifmgd);
+ if (WARN_ON_ONCE(tx && !frame_buf))
+ return;
+
if (WARN_ON(!ifmgd->associated))
return;
@@ -1108,17 +1415,25 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&local->sta_mtx);
+ /* deauthenticate/disassociate now */
+ if (tx || frame_buf)
+ ieee80211_send_deauth_disassoc(sdata, bssid, stype, reason,
+ tx, frame_buf);
+
+ /* flush out frame */
+ if (tx)
+ drv_flush(local, false);
+
+ /* remove AP and TDLS peers */
+ sta_info_flush(local, sdata);
+
+ /* finally reset all BSS / config parameters */
changed |= ieee80211_reset_erp_info(sdata);
ieee80211_led_assoc(local, 0);
changed |= BSS_CHANGED_ASSOC;
sdata->vif.bss_conf.assoc = false;
- ieee80211_set_wmm_default(sdata);
-
- /* channel(_type) changes are handled by ieee80211_hw_config */
- WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
-
/* on the next assoc, re-program HT parameters */
sdata->ht_opmode_valid = false;
memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
@@ -1131,25 +1446,29 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
if (local->hw.conf.flags & IEEE80211_CONF_PS) {
local->hw.conf.flags &= ~IEEE80211_CONF_PS;
- config_changed |= IEEE80211_CONF_CHANGE_PS;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
}
local->ps_sdata = NULL;
- ieee80211_hw_config(local, config_changed);
-
/* Disable ARP filtering */
if (sdata->vif.bss_conf.arp_filter_enabled) {
sdata->vif.bss_conf.arp_filter_enabled = false;
changed |= BSS_CHANGED_ARP_FILTER;
}
+ sdata->vif.bss_conf.qos = false;
+ changed |= BSS_CHANGED_QOS;
+
/* The BSSID (not really interesting) and HT changed */
changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ieee80211_bss_info_change_notify(sdata, changed);
- /* remove AP and TDLS peers */
- if (remove_sta)
- sta_info_flush(local, sdata);
+ /* channel(_type) changes are handled by ieee80211_hw_config */
+ WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
+ ieee80211_hw_config(local, 0);
+
+ /* disassociated - set to defaults now */
+ ieee80211_set_wmm_default(sdata, false);
del_timer_sync(&sdata->u.mgd.conn_mon_timer);
del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
@@ -1347,6 +1666,7 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
u8 bssid[ETH_ALEN];
+ u8 frame_buf[DEAUTH_DISASSOC_LEN];
mutex_lock(&ifmgd->mtx);
if (!ifmgd->associated) {
@@ -1359,17 +1679,16 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "%s: Connection to AP %pM lost.\n",
sdata->name, bssid);
- ieee80211_set_disassoc(sdata, true, true);
+ ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
+ WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
+ false, frame_buf);
mutex_unlock(&ifmgd->mtx);
/*
* must be outside lock due to cfg80211,
* but that's not a problem.
*/
- ieee80211_send_deauth_disassoc(sdata, bssid,
- IEEE80211_STYPE_DEAUTH,
- WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
- NULL, true);
+ cfg80211_send_deauth(sdata->dev, frame_buf, DEAUTH_DISASSOC_LEN);
mutex_lock(&local->mtx);
ieee80211_recalc_idle(local);
@@ -1423,6 +1742,126 @@ void ieee80211_connection_loss(struct ieee80211_vif *vif)
EXPORT_SYMBOL(ieee80211_connection_loss);
+static void ieee80211_destroy_auth_data(struct ieee80211_sub_if_data *sdata,
+ bool assoc)
+{
+ struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
+
+ lockdep_assert_held(&sdata->u.mgd.mtx);
+
+ if (!assoc) {
+ sta_info_destroy_addr(sdata, auth_data->bss->bssid);
+
+ memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
+ }
+
+ cfg80211_put_bss(auth_data->bss);
+ kfree(auth_data);
+ sdata->u.mgd.auth_data = NULL;
+}
+
+static void ieee80211_auth_challenge(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_mgd_auth_data *auth_data = sdata->u.mgd.auth_data;
+ u8 *pos;
+ struct ieee802_11_elems elems;
+
+ pos = mgmt->u.auth.variable;
+ ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
+ if (!elems.challenge)
+ return;
+ auth_data->expected_transaction = 4;
+ ieee80211_send_auth(sdata, 3, auth_data->algorithm,
+ elems.challenge - 2, elems.challenge_len + 2,
+ auth_data->bss->bssid, auth_data->bss->bssid,
+ auth_data->key, auth_data->key_len,
+ auth_data->key_idx);
+}
+
+static enum rx_mgmt_action __must_check
+ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u8 bssid[ETH_ALEN];
+ u16 auth_alg, auth_transaction, status_code;
+ struct sta_info *sta;
+
+ lockdep_assert_held(&ifmgd->mtx);
+
+ if (len < 24 + 6)
+ return RX_MGMT_NONE;
+
+ if (!ifmgd->auth_data || ifmgd->auth_data->done)
+ return RX_MGMT_NONE;
+
+ memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
+
+ if (compare_ether_addr(bssid, mgmt->bssid))
+ return RX_MGMT_NONE;
+
+ auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
+ auth_transaction = le16_to_cpu(mgmt->u.auth.auth_transaction);
+ status_code = le16_to_cpu(mgmt->u.auth.status_code);
+
+ if (auth_alg != ifmgd->auth_data->algorithm ||
+ auth_transaction != ifmgd->auth_data->expected_transaction)
+ return RX_MGMT_NONE;
+
+ if (status_code != WLAN_STATUS_SUCCESS) {
+ printk(KERN_DEBUG "%s: %pM denied authentication (status %d)\n",
+ sdata->name, mgmt->sa, status_code);
+ goto out;
+ }
+
+ switch (ifmgd->auth_data->algorithm) {
+ case WLAN_AUTH_OPEN:
+ case WLAN_AUTH_LEAP:
+ case WLAN_AUTH_FT:
+ break;
+ case WLAN_AUTH_SHARED_KEY:
+ if (ifmgd->auth_data->expected_transaction != 4) {
+ ieee80211_auth_challenge(sdata, mgmt, len);
+ /* need another frame */
+ return RX_MGMT_NONE;
+ }
+ break;
+ default:
+ WARN_ONCE(1, "invalid auth alg %d",
+ ifmgd->auth_data->algorithm);
+ return RX_MGMT_NONE;
+ }
+
+ printk(KERN_DEBUG "%s: authenticated\n", sdata->name);
+ out:
+ ifmgd->auth_data->done = true;
+ ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
+ run_again(ifmgd, ifmgd->auth_data->timeout);
+
+ /* move station state to auth */
+ mutex_lock(&sdata->local->sta_mtx);
+ sta = sta_info_get(sdata, bssid);
+ if (!sta) {
+ WARN_ONCE(1, "%s: STA %pM not found", sdata->name, bssid);
+ goto out_err;
+ }
+ if (sta_info_move_state(sta, IEEE80211_STA_AUTH)) {
+ printk(KERN_DEBUG "%s: failed moving %pM to auth\n",
+ sdata->name, bssid);
+ goto out_err;
+ }
+ mutex_unlock(&sdata->local->sta_mtx);
+
+ return RX_MGMT_CFG80211_RX_AUTH;
+ out_err:
+ mutex_unlock(&sdata->local->sta_mtx);
+ /* ignore frame -- wait for timeout */
+ return RX_MGMT_NONE;
+}
+
+
static enum rx_mgmt_action __must_check
ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len)
@@ -1431,10 +1870,14 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
const u8 *bssid = NULL;
u16 reason_code;
+ lockdep_assert_held(&ifmgd->mtx);
+
if (len < 24 + 2)
return RX_MGMT_NONE;
- ASSERT_MGD_MTX(ifmgd);
+ if (!ifmgd->associated ||
+ compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
+ return RX_MGMT_NONE;
bssid = ifmgd->associated->bssid;
@@ -1443,7 +1886,8 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n",
sdata->name, bssid, reason_code);
- ieee80211_set_disassoc(sdata, true, false);
+ ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
+
mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
mutex_unlock(&sdata->local->mtx);
@@ -1459,15 +1903,13 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u16 reason_code;
- if (len < 24 + 2)
- return RX_MGMT_NONE;
-
- ASSERT_MGD_MTX(ifmgd);
+ lockdep_assert_held(&ifmgd->mtx);
- if (WARN_ON(!ifmgd->associated))
+ if (len < 24 + 2)
return RX_MGMT_NONE;
- if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN)))
+ if (!ifmgd->associated ||
+ compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
return RX_MGMT_NONE;
reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
@@ -1475,10 +1917,12 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n",
sdata->name, mgmt->sa, reason_code);
- ieee80211_set_disassoc(sdata, true, false);
+ ieee80211_set_disassoc(sdata, 0, 0, false, NULL);
+
mutex_lock(&sdata->local->mtx);
ieee80211_recalc_idle(sdata->local);
mutex_unlock(&sdata->local->mtx);
+
return RX_MGMT_CFG80211_DISASSOC;
}
@@ -1524,25 +1968,39 @@ static void ieee80211_get_rates(struct ieee80211_supported_band *sband,
}
}
-static bool ieee80211_assoc_success(struct ieee80211_work *wk,
+static void ieee80211_destroy_assoc_data(struct ieee80211_sub_if_data *sdata,
+ bool assoc)
+{
+ struct ieee80211_mgd_assoc_data *assoc_data = sdata->u.mgd.assoc_data;
+
+ lockdep_assert_held(&sdata->u.mgd.mtx);
+
+ if (!assoc) {
+ sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
+
+ memset(sdata->u.mgd.bssid, 0, ETH_ALEN);
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
+ }
+
+ kfree(assoc_data);
+ sdata->u.mgd.assoc_data = NULL;
+}
+
+static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_bss *cbss,
struct ieee80211_mgmt *mgmt, size_t len)
{
- struct ieee80211_sub_if_data *sdata = wk->sdata;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct sta_info *sta;
- struct cfg80211_bss *cbss = wk->assoc.bss;
u8 *pos;
- u32 rates, basic_rates;
u16 capab_info, aid;
struct ieee802_11_elems elems;
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
u32 changed = 0;
int err;
- bool have_higher_than_11mbit = false;
u16 ap_ht_cap_flags;
- int min_rate = INT_MAX, min_rate_index = -1;
/* AssocResp and ReassocResp have identical structure */
@@ -1581,49 +2039,13 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
* station info was already allocated and inserted before
* the association and should be available to us
*/
- sta = sta_info_get_rx(sdata, cbss->bssid);
+ sta = sta_info_get(sdata, cbss->bssid);
if (WARN_ON(!sta)) {
mutex_unlock(&sdata->local->sta_mtx);
return false;
}
- sta_info_move_state(sta, IEEE80211_STA_AUTH);
- sta_info_move_state(sta, IEEE80211_STA_ASSOC);
- if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
- sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
-
- rates = 0;
- basic_rates = 0;
- sband = local->hw.wiphy->bands[wk->chan->band];
-
- ieee80211_get_rates(sband, elems.supp_rates, elems.supp_rates_len,
- &rates, &basic_rates, &have_higher_than_11mbit,
- &min_rate, &min_rate_index);
-
- ieee80211_get_rates(sband, elems.ext_supp_rates,
- elems.ext_supp_rates_len, &rates, &basic_rates,
- &have_higher_than_11mbit,
- &min_rate, &min_rate_index);
-
- /*
- * some buggy APs don't advertise basic_rates. use the lowest
- * supported rate instead.
- */
- if (unlikely(!basic_rates) && min_rate_index >= 0) {
- printk(KERN_DEBUG "%s: No basic rates in AssocResp. "
- "Using min supported rate instead.\n", sdata->name);
- basic_rates = BIT(min_rate_index);
- }
-
- sta->sta.supp_rates[wk->chan->band] = rates;
- sdata->vif.bss_conf.basic_rates = basic_rates;
-
- /* cf. IEEE 802.11 9.2.12 */
- if (wk->chan->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+ sband = local->hw.wiphy->bands[local->oper_channel->band];
if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
@@ -1639,15 +2061,22 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
if (elems.wmm_param)
set_sta_flag(sta, WLAN_STA_WME);
- /* sta_info_reinsert will also unlock the mutex lock */
- err = sta_info_reinsert(sta);
- sta = NULL;
+ err = sta_info_move_state(sta, IEEE80211_STA_AUTH);
+ if (!err)
+ err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
+ if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
+ err = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
if (err) {
- printk(KERN_DEBUG "%s: failed to insert STA entry for"
- " the AP (error %d)\n", sdata->name, err);
+ printk(KERN_DEBUG
+ "%s: failed to move station %pM to desired state\n",
+ sdata->name, sta->sta.addr);
+ WARN_ON(__sta_info_destroy(sta));
+ mutex_unlock(&sdata->local->sta_mtx);
return false;
}
+ mutex_unlock(&sdata->local->sta_mtx);
+
/*
* Always handle WMM once after association regardless
* of the first value the AP uses. Setting -1 here has
@@ -1660,12 +2089,10 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
elems.wmm_param_len);
else
- ieee80211_set_wmm_default(sdata);
-
- local->oper_channel = wk->chan;
+ ieee80211_set_wmm_default(sdata, false);
+ changed |= BSS_CHANGED_QOS;
if (elems.ht_info_elem && elems.wmm_param &&
- (sdata->local->hw.queues >= 4) &&
!(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
cbss->bssid, ap_ht_cap_flags,
@@ -1694,7 +2121,88 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
return true;
}
+static enum rx_mgmt_action __must_check
+ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ struct cfg80211_bss **bss)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+ u16 capab_info, status_c