1 files changed, 76 insertions, 133 deletions

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index ae62ad40ad63..fa0cc7a1e6b4 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -41,6 +41,8 @@
  */
 struct ieee80211_tx_status_rtap_hdr {
         struct ieee80211_radiotap_header hdr;
+        u8 rate;
+        u8 padding_for_rate;
         __le16 tx_flags;
         u8 data_retries;
 } __attribute__ ((packed));
@@ -197,129 +199,44 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed)
                                             &sdata->vif, &conf);
 }
 
-int ieee80211_hw_config(struct ieee80211_local *local)
+int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 {
         struct ieee80211_channel *chan;
         int ret = 0;
+        int power;
+
+        might_sleep();
 
         if (local->sw_scanning)
                 chan = local->scan_channel;
         else
                 chan = local->oper_channel;
 
-        local->hw.conf.channel = chan;
+        if (chan != local->hw.conf.channel) {
+                local->hw.conf.channel = chan;
+                changed |= IEEE80211_CONF_CHANGE_CHANNEL;
+        }
+
 
         if (!local->hw.conf.power_level)
-                local->hw.conf.power_level = chan->max_power;
+                power = chan->max_power;
         else
-                local->hw.conf.power_level = min(chan->max_power,
-                                               local->hw.conf.power_level);
-
-        local->hw.conf.max_antenna_gain = chan->max_antenna_gain;
-
-#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
-        printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n",
-               wiphy_name(local->hw.wiphy), chan->center_freq);
-#endif
-
-        if (local->open_count)
-                ret = local->ops->config(local_to_hw(local), &local->hw.conf);
-
-        return ret;
-}
-
-/**
- * ieee80211_handle_ht should be used only after legacy configuration
- * has been determined namely band, as ht configuration depends upon
- * the hardware's HT abilities for a _specific_ band.
- */
-u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
-                           struct ieee80211_ht_info *req_ht_cap,
-                           struct ieee80211_ht_bss_info *req_bss_cap)
-{
-        struct ieee80211_conf *conf = &local->hw.conf;
-        struct ieee80211_supported_band *sband;
-        struct ieee80211_ht_info ht_conf;
-        struct ieee80211_ht_bss_info ht_bss_conf;
-        u32 changed = 0;
-        int i;
-        u8 max_tx_streams = IEEE80211_HT_CAP_MAX_STREAMS;
-        u8 tx_mcs_set_cap;
-
-        sband = local->hw.wiphy->bands[conf->channel->band];
-
-        memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info));
-        memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info));
-
-        /* HT is not supported */
-        if (!sband->ht_info.ht_supported) {
-                conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
-                goto out;
+                power = min(chan->max_power, local->hw.conf.power_level);
+        if (local->hw.conf.power_level != power) {
+                changed |= IEEE80211_CONF_CHANGE_POWER;
+                local->hw.conf.power_level = power;
         }
 
-        /* disable HT */
-        if (!enable_ht) {
-                if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)
-                        changed |= BSS_CHANGED_HT;
-                conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
-                conf->ht_conf.ht_supported = 0;
-                goto out;
+        if (changed && local->open_count) {
+                ret = local->ops->config(local_to_hw(local), changed);
+                /*
+                 * HW reconfiguration should never fail, the driver has told
+                 * us what it can support so it should live up to that promise.
+                 */
+                WARN_ON(ret);
         }
 
-
-        if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE))
-                changed |= BSS_CHANGED_HT;
-
-        conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
-        ht_conf.ht_supported = 1;
-
-        ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
-        ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS);
-        ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS;
-        ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
-        ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
-        ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
-
-        ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
-        ht_conf.ampdu_density = req_ht_cap->ampdu_density;
-
-        /* Bits 96-100 */
-        tx_mcs_set_cap = sband->ht_info.supp_mcs_set[12];
-
-        /* configure suppoerted Tx MCS according to requested MCS
-         * (based in most cases on Rx capabilities of peer) and self
-         * Tx MCS capabilities (as defined by low level driver HW
-         * Tx capabilities) */
-        if (!(tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_DEFINED))
-                goto check_changed;
-
-        /* Counting from 0 therfore + 1 */
-        if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_RX_DIFF)
-                max_tx_streams = ((tx_mcs_set_cap &
-                                IEEE80211_HT_CAP_MCS_TX_STREAMS) >> 2) + 1;
-
-        for (i = 0; i < max_tx_streams; i++)
-                ht_conf.supp_mcs_set[i] =
-                        sband->ht_info.supp_mcs_set[i] &
-                                        req_ht_cap->supp_mcs_set[i];
-
-        if (tx_mcs_set_cap & IEEE80211_HT_CAP_MCS_TX_UEQM)
-                for (i = IEEE80211_SUPP_MCS_SET_UEQM;
-                     i < IEEE80211_SUPP_MCS_SET_LEN; i++)
-                        ht_conf.supp_mcs_set[i] =
-                                sband->ht_info.supp_mcs_set[i] &
-                                        req_ht_cap->supp_mcs_set[i];
-
-check_changed:
-        /* if bss configuration changed store the new one */
-        if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) ||
-            memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) {
-                changed |= BSS_CHANGED_HT;
-                memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf));
-                memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf));
-        }
-out:
-        return changed;
+        return ret;
 }
 
 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
@@ -336,15 +253,18 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
         if (local->ops->bss_info_changed)
                 local->ops->bss_info_changed(local_to_hw(local),
                                              &sdata->vif,
-                                             &sdata->bss_conf,
+                                             &sdata->vif.bss_conf,
                                              changed);
 }
 
 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata)
 {
-        sdata->bss_conf.use_cts_prot = 0;
-        sdata->bss_conf.use_short_preamble = 0;
-        return BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE;
+        sdata->vif.bss_conf.use_cts_prot = false;
+        sdata->vif.bss_conf.use_short_preamble = false;
+        sdata->vif.bss_conf.use_short_slot = false;
+        return BSS_CHANGED_ERP_CTS_PROT |
+               BSS_CHANGED_ERP_PREAMBLE |
+               BSS_CHANGED_ERP_SLOT;
 }
 
 void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
@@ -466,8 +386,6 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
                                             struct sta_info *sta,
                                             struct sk_buff *skb)
 {
-        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-
         sta->tx_filtered_count++;
 
         /*
@@ -514,10 +432,9 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
                 return;
         }
 
-        if (!test_sta_flags(sta, WLAN_STA_PS) &&
-            !(info->flags & IEEE80211_TX_CTL_REQUEUE)) {
+        if (!test_sta_flags(sta, WLAN_STA_PS) && !skb->requeue) {
                 /* Software retry the packet once */
-                info->flags |= IEEE80211_TX_CTL_REQUEUE;
+                skb->requeue = 1;
                 ieee80211_remove_tx_extra(local, sta->key, skb);
                 dev_queue_xmit(skb);
                 return;
@@ -547,13 +464,28 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         struct ieee80211_sub_if_data *sdata;
         struct net_device *prev_dev = NULL;
         struct sta_info *sta;
+        int retry_count = -1, i;
+
+        for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
+                /* the HW cannot have attempted that rate */
+                if (i >= hw->max_rates) {
+                        info->status.rates[i].idx = -1;
+                        info->status.rates[i].count = 0;
+                }
+
+                retry_count += info->status.rates[i].count;
+        }
+        if (retry_count < 0)
+                retry_count = 0;
 
         rcu_read_lock();
 
+        sband = local->hw.wiphy->bands[info->band];
+
         sta = sta_info_get(local, hdr->addr1);
 
         if (sta) {
-                if (info->status.excessive_retries &&
+                if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
                     test_sta_flags(sta, WLAN_STA_PS)) {
                         /*
                          * The STA is in power save mode, so assume
@@ -584,12 +516,11 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                         rcu_read_unlock();
                         return;
                 } else {
-                        if (info->status.excessive_retries)
+                        if (!(info->flags & IEEE80211_TX_STAT_ACK))
                                 sta->tx_retry_failed++;
-                        sta->tx_retry_count += info->status.retry_count;
+                        sta->tx_retry_count += retry_count;
                 }
 
-                sband = local->hw.wiphy->bands[info->band];
                 rate_control_tx_status(local, sband, sta, skb);
         }
 
@@ -610,9 +541,9 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                         local->dot11TransmittedFrameCount++;
                         if (is_multicast_ether_addr(hdr->addr1))
                                 local->dot11MulticastTransmittedFrameCount++;
-                        if (info->status.retry_count > 0)
+                        if (retry_count > 0)
                                 local->dot11RetryCount++;
-                        if (info->status.retry_count > 1)
+                        if (retry_count > 1)
                                 local->dot11MultipleRetryCount++;
                 }
 
@@ -656,19 +587,30 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
         rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
         rthdr->hdr.it_present =
                 cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) |
-                            (1 << IEEE80211_RADIOTAP_DATA_RETRIES));
+                            (1 << IEEE80211_RADIOTAP_DATA_RETRIES) |
+                            (1 << IEEE80211_RADIOTAP_RATE));
 
         if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
             !is_multicast_ether_addr(hdr->addr1))
                 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL);
 
-        if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) &&
-            (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
+        /*
+         * XXX: Once radiotap gets the bitmap reset thing the vendor
+         *      extensions proposal contains, we can actually report
+         *      the whole set of tries we did.
+         */
+        if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
+            (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT))
                 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS);
-        else if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
+        else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
                 rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS);
+        if (info->status.rates[0].idx >= 0 &&
+            !(info->status.rates[0].flags & IEEE80211_TX_RC_MCS))
+                rthdr->rate = sband->bitrates[
+                                info->status.rates[0].idx].bitrate / 5;
 
-        rthdr->data_retries = info->status.retry_count;
+        /* for now report the total retry_count */
+        rthdr->data_retries = retry_count;
 
         /* XXX: is this sufficient for BPF? */
         skb_set_mac_header(skb, 0);
@@ -753,13 +695,14 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
         BUG_ON(!ops->configure_filter);
         local->ops = ops;
 
-        local->hw.queues = 1; /* default */
-
+        /* 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->short_retry_limit = 7;
-        local->long_retry_limit = 4;
-        local->hw.conf.radio_enabled = 1;
+        local->hw.conf.long_frame_max_tx_count = 4;
+        local->hw.conf.short_frame_max_tx_count = 7;
+        local->hw.conf.radio_enabled = true;
 
         INIT_LIST_HEAD(&local->interfaces);
 
@@ -1013,7 +956,7 @@ static int __init ieee80211_init(void)
 
         BUILD_BUG_ON(sizeof(struct ieee80211_tx_info) > sizeof(skb->cb));
         BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, driver_data) +
-                     IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
+                     IEEE80211_TX_INFO_DRIVER_DATA_SIZE > sizeof(skb->cb));
 
         ret = rc80211_minstrel_init();
         if (ret)