Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 197 insertions, 101 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index c6633fec8216..4a6686fa6b36 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -80,59 +80,109 @@ int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
 }
 EXPORT_SYMBOL(iwl_get_ra_sta_id);
 
+/* priv->sta_lock must be held */
 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
 {
-        unsigned long flags;
-
-        spin_lock_irqsave(&priv->sta_lock, flags);
 
         if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
-                IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
-                        sta_id);
-
-        priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
-        IWL_DEBUG_ASSOC(priv, "Added STA to Ucode: %pM\n",
-                        priv->stations[sta_id].sta.sta.addr);
+                IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
+                        sta_id, priv->stations[sta_id].sta.sta.addr);
 
-        spin_unlock_irqrestore(&priv->sta_lock, flags);
+        if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
+                IWL_DEBUG_ASSOC(priv,
+                                "STA id %u addr %pM already present in uCode (according to driver)\n",
+                                sta_id, priv->stations[sta_id].sta.sta.addr);
+        } else {
+                priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
+                IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
+                                sta_id, priv->stations[sta_id].sta.sta.addr);
+        }
 }
 
-static void iwl_add_sta_callback(struct iwl_priv *priv,
-                                 struct iwl_device_cmd *cmd,
-                                 struct sk_buff *skb)
+static void iwl_process_add_sta_resp(struct iwl_priv *priv,
+                                     struct iwl_addsta_cmd *addsta,
+                                     struct iwl_rx_packet *pkt,
+                                     bool sync)
 {
-        struct iwl_rx_packet *res = NULL;
-        struct iwl_addsta_cmd *addsta =
-                (struct iwl_addsta_cmd *)cmd->cmd.payload;
         u8 sta_id = addsta->sta.sta_id;
+        unsigned long flags;
 
-        if (!skb) {
-                IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
-                return;
-        }
-
-        res = (struct iwl_rx_packet *)skb->data;
-        if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+        if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
                 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-                          res->hdr.flags);
+                        pkt->hdr.flags);
                 return;
         }
 
-        switch (res->u.add_sta.status) {
+        IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
+                       sta_id);
+
+        spin_lock_irqsave(&priv->sta_lock, flags);
+
+        switch (pkt->u.add_sta.status) {
         case ADD_STA_SUCCESS_MSK:
+                IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
                 iwl_sta_ucode_activate(priv, sta_id);
-                 /* fall through */
+                break;
+        case ADD_STA_NO_ROOM_IN_TABLE:
+                IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
+                        sta_id);
+                break;
+        case ADD_STA_NO_BLOCK_ACK_RESOURCE:
+                IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
+                        sta_id);
+                break;
+        case ADD_STA_MODIFY_NON_EXIST_STA:
+                IWL_ERR(priv, "Attempting to modify non-existing station %d \n",
+                        sta_id);
+                break;
         default:
-                IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
-                             res->u.add_sta.status);
+                IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
+                                pkt->u.add_sta.status);
                 break;
         }
+
+        IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
+                       priv->stations[sta_id].sta.mode ==
+                       STA_CONTROL_MODIFY_MSK ?  "Modified" : "Added",
+                       sta_id, priv->stations[sta_id].sta.sta.addr);
+
+        /*
+         * XXX: The MAC address in the command buffer is often changed from
+         * the original sent to the device. That is, the MAC address
+         * written to the command buffer often is not the same MAC adress
+         * read from the command buffer when the command returns. This
+         * issue has not yet been resolved and this debugging is left to
+         * observe the problem.
+         */
+        IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
+                       priv->stations[sta_id].sta.mode ==
+                       STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
+                       addsta->sta.addr);
+
+        /*
+         * Determine if we wanted to modify or add a station,
+         * if adding a station succeeded we have some more initialization
+         * to do when using station notification. TODO
+         */
+
+        spin_unlock_irqrestore(&priv->sta_lock, flags);
+}
+
+static void iwl_add_sta_callback(struct iwl_priv *priv,
+                                 struct iwl_device_cmd *cmd,
+                                 struct iwl_rx_packet *pkt)
+{
+        struct iwl_addsta_cmd *addsta =
+                (struct iwl_addsta_cmd *)cmd->cmd.payload;
+
+        iwl_process_add_sta_resp(priv, addsta, pkt, false);
+
 }
 
 int iwl_send_add_sta(struct iwl_priv *priv,
                      struct iwl_addsta_cmd *sta, u8 flags)
 {
-        struct iwl_rx_packet *res = NULL;
+        struct iwl_rx_packet *pkt = NULL;
         int ret = 0;
         u8 data[sizeof(*sta)];
         struct iwl_host_cmd cmd = {
@@ -152,28 +202,11 @@ int iwl_send_add_sta(struct iwl_priv *priv,
         if (ret || (flags & CMD_ASYNC))
                 return ret;
 
-        res = (struct iwl_rx_packet *)cmd.reply_skb->data;
-        if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
-                IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
-                          res->hdr.flags);
-                ret = -EIO;
-        }
-
         if (ret == 0) {
-                switch (res->u.add_sta.status) {
-                case ADD_STA_SUCCESS_MSK:
-                        iwl_sta_ucode_activate(priv, sta->sta.sta_id);
-                        IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
-                        break;
-                default:
-                        ret = -EIO;
-                        IWL_WARN(priv, "REPLY_ADD_STA failed\n");
-                        break;
-                }
+                pkt = (struct iwl_rx_packet *)cmd.reply_page;
+                iwl_process_add_sta_resp(priv, sta, pkt, true);
         }
-
-        priv->alloc_rxb_skb--;
-        dev_kfree_skb_any(cmd.reply_skb);
+        iwl_free_pages(priv, cmd.reply_page);
 
         return ret;
 }
@@ -189,6 +222,11 @@ static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
                 goto done;
 
         mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
+        IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
+                        (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
+                        "static" :
+                        (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
+                        "dynamic" : "disabled");
 
         sta_flags = priv->stations[index].sta.station_flags;
 
@@ -301,7 +339,7 @@ u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
 }
 EXPORT_SYMBOL(iwl_add_station);
 
-static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
+static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const u8 *addr)
 {
         unsigned long flags;
         u8 sta_id = iwl_find_station(priv, addr);
@@ -324,26 +362,19 @@ static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
 
 static void iwl_remove_sta_callback(struct iwl_priv *priv,
                                     struct iwl_device_cmd *cmd,
-                                    struct sk_buff *skb)
+                                    struct iwl_rx_packet *pkt)
 {
-        struct iwl_rx_packet *res = NULL;
         struct iwl_rem_sta_cmd *rm_sta =
-                 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
-        const char *addr = rm_sta->addr;
-
-        if (!skb) {
-                IWL_ERR(priv, "Error: Response NULL in REPLY_REMOVE_STA.\n");
-                return;
-        }
+                        (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
+        const u8 *addr = rm_sta->addr;
 
-        res = (struct iwl_rx_packet *)skb->data;
-        if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+        if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
                 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
-                res->hdr.flags);
+                pkt->hdr.flags);
                 return;
         }
 
-        switch (res->u.rem_sta.status) {
+        switch (pkt->u.rem_sta.status) {
         case REM_STA_SUCCESS_MSK:
                 iwl_sta_ucode_deactivate(priv, addr);
                 break;
@@ -356,7 +387,7 @@ static void iwl_remove_sta_callback(struct iwl_priv *priv,
 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
                                    u8 flags)
 {
-        struct iwl_rx_packet *res = NULL;
+        struct iwl_rx_packet *pkt;
         int ret;
 
         struct iwl_rem_sta_cmd rm_sta_cmd;
@@ -381,15 +412,15 @@ static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
         if (ret || (flags & CMD_ASYNC))
                 return ret;
 
-        res = (struct iwl_rx_packet *)cmd.reply_skb->data;
-        if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
+        pkt = (struct iwl_rx_packet *)cmd.reply_page;
+        if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
                 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
-                          res->hdr.flags);
+                          pkt->hdr.flags);
                 ret = -EIO;
         }
 
         if (!ret) {
-                switch (res->u.rem_sta.status) {
+                switch (pkt->u.rem_sta.status) {
                 case REM_STA_SUCCESS_MSK:
                         iwl_sta_ucode_deactivate(priv, addr);
                         IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
@@ -400,9 +431,7 @@ static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
                         break;
                 }
         }
-
-        priv->alloc_rxb_skb--;
-        dev_kfree_skb_any(cmd.reply_skb);
+        iwl_free_pages(priv, cmd.reply_page);
 
         return ret;
 }
@@ -1016,24 +1045,19 @@ int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
         struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
         u8 sta_id;
 
-        /* Add station to device's station table */
-
         /*
-         * XXX: This check is definitely not correct, if we're an AP
-         *      it'll always be false which is not what we want, but
-         *      it doesn't look like iwlagn is prepared to be an HT
-         *      AP anyway.
+         * Set HT capabilities. It is ok to set this struct even if not using
+         * HT config: the priv->current_ht_config.is_ht flag will just be false
          */
-        if (priv->current_ht_config.is_ht) {
-                rcu_read_lock();
-                sta = ieee80211_find_sta(priv->hw, addr);
-                if (sta) {
-                        memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
-                        cur_ht_config = &ht_config;
-                }
-                rcu_read_unlock();
+        rcu_read_lock();
+        sta = ieee80211_find_sta(priv->vif, addr);
+        if (sta) {
+                memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
+                cur_ht_config = &ht_config;
         }
+        rcu_read_unlock();
 
+        /* Add station to device's station table */
         sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
 
         /* Set up default rate scaling table in device's station table */
@@ -1044,6 +1068,79 @@ int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
 EXPORT_SYMBOL(iwl_rxon_add_station);
 
 /**
+ * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
+ *
+ * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
+ *       calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
+ *       which requires station table entry to exist).
+ */
+static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
+{
+        int i, r;
+        struct iwl_link_quality_cmd link_cmd = {
+                .reserved1 = 0,
+        };
+        u32 rate_flags;
+
+        /* Set up the rate scaling to start at selected rate, fall back
+         * all the way down to 1M in IEEE order, and then spin on 1M */
+        if (priv->band == IEEE80211_BAND_5GHZ)
+                r = IWL_RATE_6M_INDEX;
+        else
+                r = IWL_RATE_1M_INDEX;
+
+        for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
+                rate_flags = 0;
+                if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
+                        rate_flags |= RATE_MCS_CCK_MSK;
+
+                rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
+                                RATE_MCS_ANT_POS;
+
+                link_cmd.rs_table[i].rate_n_flags =
+                        iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
+                r = iwl_get_prev_ieee_rate(r);
+        }
+
+        link_cmd.general_params.single_stream_ant_msk =
+                                first_antenna(priv->hw_params.valid_tx_ant);
+        link_cmd.general_params.dual_stream_ant_msk = 3;
+        link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
+        link_cmd.agg_params.agg_time_limit =
+                cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
+
+        /* Update the rate scaling for control frame Tx to AP */
+        link_cmd.sta_id = priv->hw_params.bcast_sta_id;
+
+        iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
+                               sizeof(link_cmd), &link_cmd, NULL);
+}
+
+
+/**
+ * iwl_add_bcast_station - add broadcast station into station table.
+ */
+void iwl_add_bcast_station(struct iwl_priv *priv)
+{
+        IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
+        iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
+
+        /* Set up default rate scaling table in device's station table */
+        iwl_sta_init_bcast_lq(priv);
+}
+EXPORT_SYMBOL(iwl_add_bcast_station);
+
+/**
+ * iwl3945_add_bcast_station - add broadcast station into station table.
+ */
+void iwl3945_add_bcast_station(struct iwl_priv *priv)
+{
+        IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
+        iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
+}
+EXPORT_SYMBOL(iwl3945_add_bcast_station);
+
+/**
  * iwl_get_sta_id - Find station's index within station table
  *
  * If new IBSS station, create new entry in station table
@@ -1163,7 +1260,7 @@ int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
 }
 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
 
-static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
+void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
 {
         unsigned long flags;
 
@@ -1171,27 +1268,26 @@ static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
         priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
         priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
         priv->stations[sta_id].sta.sta.modify_mask = 0;
+        priv->stations[sta_id].sta.sleep_tx_count = 0;
         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
         spin_unlock_irqrestore(&priv->sta_lock, flags);
 
         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 }
+EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
 
-void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
+void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
 {
-        /* FIXME: need locking over ps_status ??? */
-        u8 sta_id = iwl_find_station(priv, addr);
+        unsigned long flags;
 
-        if (sta_id != IWL_INVALID_STATION) {
-                u8 sta_awake = priv->stations[sta_id].
-                                ps_status == STA_PS_STATUS_WAKE;
+        spin_lock_irqsave(&priv->sta_lock, flags);
+        priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
+        priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
+        priv->stations[sta_id].sta.sta.modify_mask =
+                                        STA_MODIFY_SLEEP_TX_COUNT_MSK;
+        priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
+        priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+        spin_unlock_irqrestore(&priv->sta_lock, flags);
 
-                if (sta_awake && ps_bit)
-                        priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
-                else if (!sta_awake && !ps_bit) {
-                        iwl_sta_modify_ps_wake(priv, sta_id);
-                        priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
-                }
-        }
+        iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
 }
-