Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
Reinette Chatre | 1f44780 | 2010-01-15 13:43:41 -0800 | [diff] [blame] | 3 | * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 4 | * |
| 5 | * Portions of this file are derived from the ipw3945 project, as well |
| 6 | * as portions of the ieee80211 subsystem header files. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of version 2 of the GNU General Public License as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along with |
| 18 | * this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| 20 | * |
| 21 | * The full GNU General Public License is included in this distribution in the |
| 22 | * file called LICENSE. |
| 23 | * |
| 24 | * Contact Information: |
Winkler, Tomas | 759ef89 | 2008-12-09 11:28:58 -0800 | [diff] [blame] | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | * |
| 28 | *****************************************************************************/ |
| 29 | |
| 30 | #include <net/mac80211.h> |
Tomas Winkler | 947b13a | 2008-04-16 16:34:48 -0700 | [diff] [blame] | 31 | #include <linux/etherdevice.h> |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 32 | #include <linux/sched.h> |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 33 | #include <linux/lockdep.h> |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 34 | |
Tomas Winkler | 3e0d4cb | 2008-04-24 11:55:38 -0700 | [diff] [blame] | 35 | #include "iwl-dev.h" |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 36 | #include "iwl-core.h" |
| 37 | #include "iwl-sta.h" |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 38 | |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 39 | /* priv->sta_lock must be held */ |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 40 | static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
| 41 | { |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 42 | |
| 43 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
| 44 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n", |
| 45 | sta_id, priv->stations[sta_id].sta.sta.addr); |
| 46 | |
| 47 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { |
| 48 | IWL_DEBUG_ASSOC(priv, |
| 49 | "STA id %u addr %pM already present in uCode (according to driver)\n", |
| 50 | sta_id, priv->stations[sta_id].sta.sta.addr); |
| 51 | } else { |
| 52 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; |
| 53 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", |
| 54 | sta_id, priv->stations[sta_id].sta.sta.addr); |
| 55 | } |
| 56 | } |
| 57 | |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 58 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, |
| 59 | struct iwl_addsta_cmd *addsta, |
| 60 | struct iwl_rx_packet *pkt, |
| 61 | bool sync) |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 62 | { |
| 63 | u8 sta_id = addsta->sta.sta_id; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 64 | unsigned long flags; |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 65 | int ret = -EIO; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 66 | |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 67 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
| 68 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", |
| 69 | pkt->hdr.flags); |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 70 | return ret; |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", |
| 74 | sta_id); |
| 75 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 76 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 77 | |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 78 | switch (pkt->u.add_sta.status) { |
| 79 | case ADD_STA_SUCCESS_MSK: |
| 80 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); |
| 81 | iwl_sta_ucode_activate(priv, sta_id); |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 82 | ret = 0; |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 83 | break; |
| 84 | case ADD_STA_NO_ROOM_IN_TABLE: |
| 85 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 86 | sta_id); |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 87 | break; |
| 88 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: |
| 89 | IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n", |
| 90 | sta_id); |
| 91 | break; |
| 92 | case ADD_STA_MODIFY_NON_EXIST_STA: |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 93 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 94 | sta_id); |
| 95 | break; |
| 96 | default: |
| 97 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", |
| 98 | pkt->u.add_sta.status); |
| 99 | break; |
| 100 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 101 | |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 102 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", |
| 103 | priv->stations[sta_id].sta.mode == |
| 104 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", |
| 105 | sta_id, priv->stations[sta_id].sta.sta.addr); |
| 106 | |
| 107 | /* |
| 108 | * XXX: The MAC address in the command buffer is often changed from |
| 109 | * the original sent to the device. That is, the MAC address |
| 110 | * written to the command buffer often is not the same MAC adress |
| 111 | * read from the command buffer when the command returns. This |
| 112 | * issue has not yet been resolved and this debugging is left to |
| 113 | * observe the problem. |
| 114 | */ |
| 115 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", |
| 116 | priv->stations[sta_id].sta.mode == |
| 117 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", |
| 118 | addsta->sta.addr); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 119 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 120 | |
| 121 | return ret; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 122 | } |
| 123 | |
Johannes Berg | 5696aea | 2009-07-24 11:13:06 -0700 | [diff] [blame] | 124 | static void iwl_add_sta_callback(struct iwl_priv *priv, |
| 125 | struct iwl_device_cmd *cmd, |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 126 | struct iwl_rx_packet *pkt) |
Tomas Winkler | 42132bc | 2008-05-29 16:35:03 +0800 | [diff] [blame] | 127 | { |
Tomas Winkler | 3257e5d | 2008-10-14 12:32:43 -0700 | [diff] [blame] | 128 | struct iwl_addsta_cmd *addsta = |
| 129 | (struct iwl_addsta_cmd *)cmd->cmd.payload; |
Tomas Winkler | 42132bc | 2008-05-29 16:35:03 +0800 | [diff] [blame] | 130 | |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 131 | iwl_process_add_sta_resp(priv, addsta, pkt, false); |
Tomas Winkler | 42132bc | 2008-05-29 16:35:03 +0800 | [diff] [blame] | 132 | |
Tomas Winkler | 42132bc | 2008-05-29 16:35:03 +0800 | [diff] [blame] | 133 | } |
| 134 | |
Samuel Ortiz | 17f841c | 2009-01-23 13:45:20 -0800 | [diff] [blame] | 135 | int iwl_send_add_sta(struct iwl_priv *priv, |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 136 | struct iwl_addsta_cmd *sta, u8 flags) |
| 137 | { |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 138 | struct iwl_rx_packet *pkt = NULL; |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 139 | int ret = 0; |
| 140 | u8 data[sizeof(*sta)]; |
| 141 | struct iwl_host_cmd cmd = { |
| 142 | .id = REPLY_ADD_STA, |
Johannes Berg | c2acea8 | 2009-07-24 11:13:05 -0700 | [diff] [blame] | 143 | .flags = flags, |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 144 | .data = data, |
| 145 | }; |
Reinette Chatre | f875f51 | 2010-04-05 10:43:10 -0700 | [diff] [blame] | 146 | u8 sta_id __maybe_unused = sta->sta.sta_id; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 147 | |
| 148 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", |
| 149 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 150 | |
Tomas Winkler | 42132bc | 2008-05-29 16:35:03 +0800 | [diff] [blame] | 151 | if (flags & CMD_ASYNC) |
Johannes Berg | c2acea8 | 2009-07-24 11:13:05 -0700 | [diff] [blame] | 152 | cmd.callback = iwl_add_sta_callback; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 153 | else { |
Johannes Berg | c2acea8 | 2009-07-24 11:13:05 -0700 | [diff] [blame] | 154 | cmd.flags |= CMD_WANT_SKB; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 155 | might_sleep(); |
| 156 | } |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 157 | |
| 158 | cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data); |
| 159 | ret = iwl_send_cmd(priv, &cmd); |
| 160 | |
| 161 | if (ret || (flags & CMD_ASYNC)) |
| 162 | return ret; |
| 163 | |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 164 | if (ret == 0) { |
Reinette Chatre | 1fa97aa | 2010-01-22 14:22:48 -0800 | [diff] [blame] | 165 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
Johannes Berg | 09034cb | 2010-06-14 08:32:38 -0700 | [diff] [blame] | 166 | ret = iwl_process_add_sta_resp(priv, sta, pkt, true); |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 167 | } |
Zhu Yi | 64a76b5 | 2009-12-10 14:37:21 -0800 | [diff] [blame] | 168 | iwl_free_pages(priv, cmd.reply_page); |
Tomas Winkler | 133636d | 2008-05-05 10:22:34 +0800 | [diff] [blame] | 169 | |
| 170 | return ret; |
| 171 | } |
Samuel Ortiz | 17f841c | 2009-01-23 13:45:20 -0800 | [diff] [blame] | 172 | EXPORT_SYMBOL(iwl_send_add_sta); |
Tomas Winkler | 947b13a | 2008-04-16 16:34:48 -0700 | [diff] [blame] | 173 | |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 174 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 175 | struct ieee80211_sta *sta, |
| 176 | struct iwl_rxon_context *ctx) |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 177 | { |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 178 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 179 | __le32 sta_flags; |
| 180 | u8 mimo_ps_mode; |
| 181 | |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 182 | if (!sta || !sta_ht_inf->ht_supported) |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 183 | goto done; |
| 184 | |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 185 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; |
Wey-Yi Guy | 3f3e037 | 2009-10-30 14:36:17 -0700 | [diff] [blame] | 186 | IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n", |
| 187 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? |
| 188 | "static" : |
| 189 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? |
| 190 | "dynamic" : "disabled"); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 191 | |
| 192 | sta_flags = priv->stations[index].sta.station_flags; |
| 193 | |
| 194 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); |
| 195 | |
| 196 | switch (mimo_ps_mode) { |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 197 | case WLAN_HT_CAP_SM_PS_STATIC: |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 198 | sta_flags |= STA_FLG_MIMO_DIS_MSK; |
| 199 | break; |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 200 | case WLAN_HT_CAP_SM_PS_DYNAMIC: |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 201 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
| 202 | break; |
Tomas Winkler | 00c5ae2 | 2008-09-03 11:26:42 +0800 | [diff] [blame] | 203 | case WLAN_HT_CAP_SM_PS_DISABLED: |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 204 | break; |
| 205 | default: |
Winkler, Tomas | 39aadf8 | 2008-12-19 10:37:32 +0800 | [diff] [blame] | 206 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 207 | break; |
| 208 | } |
| 209 | |
| 210 | sta_flags |= cpu_to_le32( |
| 211 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
| 212 | |
| 213 | sta_flags |= cpu_to_le32( |
| 214 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
| 215 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 216 | if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap)) |
Wey-Yi Guy | 7aafef1 | 2009-08-07 15:41:38 -0700 | [diff] [blame] | 217 | sta_flags |= STA_FLG_HT40_EN_MSK; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 218 | else |
Wey-Yi Guy | 7aafef1 | 2009-08-07 15:41:38 -0700 | [diff] [blame] | 219 | sta_flags &= ~STA_FLG_HT40_EN_MSK; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 220 | |
| 221 | priv->stations[index].sta.station_flags = sta_flags; |
| 222 | done: |
| 223 | return; |
| 224 | } |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 225 | |
| 226 | /** |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 227 | * iwl_prep_station - Prepare station information for addition |
| 228 | * |
| 229 | * should be called with sta_lock held |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 230 | */ |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 231 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 232 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 233 | { |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 234 | struct iwl_station_entry *station; |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 235 | int i; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 236 | u8 sta_id = IWL_INVALID_STATION; |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 237 | u16 rate; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 238 | |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 239 | if (is_ap) |
Johannes Berg | 2995baf | 2010-08-23 10:46:42 +0200 | [diff] [blame] | 240 | sta_id = ctx->ap_sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 241 | else if (is_broadcast_ether_addr(addr)) |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 242 | sta_id = ctx->bcast_sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 243 | else |
| 244 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { |
| 245 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
| 246 | addr)) { |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 247 | sta_id = i; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 248 | break; |
| 249 | } |
| 250 | |
| 251 | if (!priv->stations[i].used && |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 252 | sta_id == IWL_INVALID_STATION) |
| 253 | sta_id = i; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 254 | } |
| 255 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 256 | /* |
| 257 | * These two conditions have the same outcome, but keep them |
| 258 | * separate |
| 259 | */ |
| 260 | if (unlikely(sta_id == IWL_INVALID_STATION)) |
| 261 | return sta_id; |
| 262 | |
| 263 | /* |
| 264 | * uCode is not able to deal with multiple requests to add a |
| 265 | * station. Keep track if one is in progress so that we do not send |
| 266 | * another. |
| 267 | */ |
| 268 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { |
| 269 | IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n", |
| 270 | sta_id); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 271 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 272 | } |
| 273 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 274 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
| 275 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 276 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 277 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n", |
| 278 | sta_id, addr); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 279 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 280 | } |
| 281 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 282 | station = &priv->stations[sta_id]; |
| 283 | station->used = IWL_STA_DRIVER_ACTIVE; |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 284 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 285 | sta_id, addr); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 286 | priv->num_stations++; |
| 287 | |
| 288 | /* Set up the REPLY_ADD_STA command to send to device */ |
| 289 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); |
| 290 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
| 291 | station->sta.mode = 0; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 292 | station->sta.sta.sta_id = sta_id; |
Johannes Berg | 770e13b | 2010-08-23 10:46:44 +0200 | [diff] [blame] | 293 | station->sta.station_flags = ctx->station_flags; |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 294 | station->ctxid = ctx->ctxid; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 295 | |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 296 | if (sta) { |
| 297 | struct iwl_station_priv_common *sta_priv; |
| 298 | |
| 299 | sta_priv = (void *)sta->drv_priv; |
| 300 | sta_priv->ctx = ctx; |
| 301 | } |
| 302 | |
Johannes Berg | 63d4176 | 2010-04-30 11:30:50 -0700 | [diff] [blame] | 303 | /* |
| 304 | * OK to call unconditionally, since local stations (IBSS BSSID |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 305 | * STA and broadcast STA) pass in a NULL sta, and mac80211 |
Johannes Berg | 63d4176 | 2010-04-30 11:30:50 -0700 | [diff] [blame] | 306 | * doesn't allow HT IBSS. |
| 307 | */ |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 308 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 309 | |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 310 | /* 3945 only */ |
| 311 | rate = (priv->band == IEEE80211_BAND_5GHZ) ? |
| 312 | IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP; |
| 313 | /* Turn on both antennas for the station... */ |
| 314 | station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); |
| 315 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 316 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 317 | |
| 318 | } |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 319 | EXPORT_SYMBOL_GPL(iwl_prep_station); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 320 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 321 | #define STA_WAIT_TIMEOUT (HZ/2) |
| 322 | |
| 323 | /** |
| 324 | * iwl_add_station_common - |
| 325 | */ |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 326 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 327 | const u8 *addr, bool is_ap, |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 328 | struct ieee80211_sta *sta, u8 *sta_id_r) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 329 | { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 330 | unsigned long flags_spin; |
| 331 | int ret = 0; |
| 332 | u8 sta_id; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 333 | struct iwl_addsta_cmd sta_cmd; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 334 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 335 | *sta_id_r = 0; |
| 336 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 337 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 338 | if (sta_id == IWL_INVALID_STATION) { |
| 339 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", |
| 340 | addr); |
| 341 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 342 | return -EINVAL; |
| 343 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 344 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 345 | /* |
| 346 | * uCode is not able to deal with multiple requests to add a |
| 347 | * station. Keep track if one is in progress so that we do not send |
| 348 | * another. |
| 349 | */ |
| 350 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { |
| 351 | IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n", |
| 352 | sta_id); |
| 353 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 354 | return -EEXIST; |
| 355 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 356 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 357 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
| 358 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
| 359 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n", |
| 360 | sta_id, addr); |
| 361 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 362 | return -EEXIST; |
| 363 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 364 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 365 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 366 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 367 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 368 | |
| 369 | /* Add station to device's station table */ |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 370 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 371 | if (ret) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 372 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 373 | IWL_ERR(priv, "Adding station %pM failed.\n", |
| 374 | priv->stations[sta_id].sta.sta.addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 375 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
| 376 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 377 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 378 | } |
| 379 | *sta_id_r = sta_id; |
| 380 | return ret; |
| 381 | } |
| 382 | EXPORT_SYMBOL(iwl_add_station_common); |
| 383 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 384 | /** |
| 385 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station |
| 386 | * |
| 387 | * priv->sta_lock must be held |
| 388 | */ |
| 389 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) |
| 390 | { |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 391 | /* Ucode must be active and driver must be non active */ |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 392 | if ((priv->stations[sta_id].used & |
| 393 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 394 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 395 | |
| 396 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; |
| 397 | |
| 398 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 399 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 400 | } |
| 401 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 402 | static int iwl_send_remove_station(struct iwl_priv *priv, |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 403 | const u8 *addr, int sta_id) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 404 | { |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 405 | struct iwl_rx_packet *pkt; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 406 | int ret; |
| 407 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 408 | unsigned long flags_spin; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 409 | struct iwl_rem_sta_cmd rm_sta_cmd; |
| 410 | |
| 411 | struct iwl_host_cmd cmd = { |
| 412 | .id = REPLY_REMOVE_STA, |
| 413 | .len = sizeof(struct iwl_rem_sta_cmd), |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 414 | .flags = CMD_SYNC, |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 415 | .data = &rm_sta_cmd, |
| 416 | }; |
| 417 | |
| 418 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); |
| 419 | rm_sta_cmd.num_sta = 1; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 420 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 421 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 422 | cmd.flags |= CMD_WANT_SKB; |
| 423 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 424 | ret = iwl_send_cmd(priv, &cmd); |
| 425 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 426 | if (ret) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 427 | return ret; |
| 428 | |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 429 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
| 430 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 431 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 432 | pkt->hdr.flags); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 433 | ret = -EIO; |
| 434 | } |
| 435 | |
| 436 | if (!ret) { |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 437 | switch (pkt->u.rem_sta.status) { |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 438 | case REM_STA_SUCCESS_MSK: |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 439 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 440 | iwl_sta_ucode_deactivate(priv, sta_id); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 441 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 442 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 443 | break; |
| 444 | default: |
| 445 | ret = -EIO; |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 446 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 447 | break; |
| 448 | } |
| 449 | } |
Zhu Yi | 64a76b5 | 2009-12-10 14:37:21 -0800 | [diff] [blame] | 450 | iwl_free_pages(priv, cmd.reply_page); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 451 | |
| 452 | return ret; |
| 453 | } |
Emmanuel Grumbach | be1f3ab6 | 2008-06-12 09:47:18 +0800 | [diff] [blame] | 454 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 455 | /** |
| 456 | * iwl_remove_station - Remove driver's knowledge of station. |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 457 | */ |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 458 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, |
| 459 | const u8 *addr) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 460 | { |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 461 | unsigned long flags; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 462 | |
| 463 | if (!iwl_is_ready(priv)) { |
| 464 | IWL_DEBUG_INFO(priv, |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 465 | "Unable to remove station %pM, device not ready.\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 466 | addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 467 | /* |
| 468 | * It is typical for stations to be removed when we are |
| 469 | * going down. Return success since device will be down |
| 470 | * soon anyway |
| 471 | */ |
| 472 | return 0; |
| 473 | } |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 474 | |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 475 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 476 | sta_id, addr); |
| 477 | |
| 478 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) |
| 479 | return -EINVAL; |
| 480 | |
| 481 | spin_lock_irqsave(&priv->sta_lock, flags); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 482 | |
| 483 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 484 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 485 | addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 486 | goto out_err; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 487 | } |
| 488 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 489 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 490 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 491 | addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 492 | goto out_err; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 493 | } |
| 494 | |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 495 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { |
| 496 | kfree(priv->stations[sta_id].lq); |
| 497 | priv->stations[sta_id].lq = NULL; |
| 498 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 499 | |
| 500 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
| 501 | |
| 502 | priv->num_stations--; |
| 503 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 504 | BUG_ON(priv->num_stations < 0); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 505 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 506 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 507 | |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 508 | return iwl_send_remove_station(priv, addr, sta_id); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 509 | out_err: |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 510 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 511 | return -EINVAL; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 512 | } |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 513 | EXPORT_SYMBOL_GPL(iwl_remove_station); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 514 | |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 515 | /** |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 516 | * iwl_clear_ucode_stations - clear ucode station table bits |
| 517 | * |
| 518 | * This function clears all the bits in the driver indicating |
| 519 | * which stations are active in the ucode. Call when something |
| 520 | * other than explicit station management would cause this in |
| 521 | * the ucode, e.g. unassociated RXON. |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 522 | */ |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 523 | void iwl_clear_ucode_stations(struct iwl_priv *priv, |
| 524 | struct iwl_rxon_context *ctx) |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 525 | { |
Mohamed Abbas | 48676eb | 2009-03-11 11:17:59 -0700 | [diff] [blame] | 526 | int i; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 527 | unsigned long flags_spin; |
| 528 | bool cleared = false; |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 529 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 530 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); |
Mohamed Abbas | 48676eb | 2009-03-11 11:17:59 -0700 | [diff] [blame] | 531 | |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 532 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 533 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 534 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) |
| 535 | continue; |
| 536 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 537 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { |
| 538 | IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i); |
| 539 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
| 540 | cleared = true; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 541 | } |
| 542 | } |
| 543 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 544 | |
| 545 | if (!cleared) |
| 546 | IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n"); |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 547 | } |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 548 | EXPORT_SYMBOL(iwl_clear_ucode_stations); |
| 549 | |
| 550 | /** |
| 551 | * iwl_restore_stations() - Restore driver known stations to device |
| 552 | * |
| 553 | * All stations considered active by driver, but not present in ucode, is |
| 554 | * restored. |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 555 | * |
| 556 | * Function sleeps. |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 557 | */ |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 558 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 559 | { |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 560 | struct iwl_addsta_cmd sta_cmd; |
| 561 | struct iwl_link_quality_cmd lq; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 562 | unsigned long flags_spin; |
| 563 | int i; |
| 564 | bool found = false; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 565 | int ret; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 566 | bool send_lq; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 567 | |
| 568 | if (!iwl_is_ready(priv)) { |
| 569 | IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n"); |
| 570 | return; |
| 571 | } |
| 572 | |
| 573 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); |
| 574 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| 575 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 576 | if (ctx->ctxid != priv->stations[i].ctxid) |
| 577 | continue; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 578 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && |
| 579 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { |
| 580 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", |
| 581 | priv->stations[i].sta.sta.addr); |
| 582 | priv->stations[i].sta.mode = 0; |
| 583 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; |
| 584 | found = true; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
| 589 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 590 | memcpy(&sta_cmd, &priv->stations[i].sta, |
| 591 | sizeof(struct iwl_addsta_cmd)); |
| 592 | send_lq = false; |
| 593 | if (priv->stations[i].lq) { |
| 594 | memcpy(&lq, priv->stations[i].lq, |
| 595 | sizeof(struct iwl_link_quality_cmd)); |
| 596 | send_lq = true; |
| 597 | } |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 598 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 599 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 600 | if (ret) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 601 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 602 | IWL_ERR(priv, "Adding station %pM failed.\n", |
| 603 | priv->stations[i].sta.sta.addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 604 | priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE; |
| 605 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 606 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 607 | } |
| 608 | /* |
| 609 | * Rate scaling has already been initialized, send |
| 610 | * current LQ command |
| 611 | */ |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 612 | if (send_lq) |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 613 | iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 614 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 615 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 620 | if (!found) |
| 621 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n"); |
| 622 | else |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 623 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n"); |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 624 | } |
| 625 | EXPORT_SYMBOL(iwl_restore_stations); |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 626 | |
Abhijeet Kolekar | 6e21f15 | 2009-02-27 16:21:21 -0800 | [diff] [blame] | 627 | int iwl_get_free_ucode_key_index(struct iwl_priv *priv) |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 628 | { |
| 629 | int i; |
| 630 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 631 | for (i = 0; i < priv->sta_key_max_num; i++) |
Emmanuel Grumbach | 77bab60 | 2008-04-15 16:01:44 -0700 | [diff] [blame] | 632 | if (!test_and_set_bit(i, &priv->ucode_key_table)) |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 633 | return i; |
| 634 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 635 | return WEP_INVALID_OFFSET; |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 636 | } |
Abhijeet Kolekar | 6e21f15 | 2009-02-27 16:21:21 -0800 | [diff] [blame] | 637 | EXPORT_SYMBOL(iwl_get_free_ucode_key_index); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 638 | |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 639 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 640 | { |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 641 | unsigned long flags; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 642 | int i; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 643 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 644 | spin_lock_irqsave(&priv->sta_lock, flags); |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 645 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
| 646 | if (!(priv->stations[i].used & IWL_STA_BCAST)) |
| 647 | continue; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 648 | |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 649 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
| 650 | priv->num_stations--; |
| 651 | BUG_ON(priv->num_stations < 0); |
| 652 | kfree(priv->stations[i].lq); |
| 653 | priv->stations[i].lq = NULL; |
| 654 | } |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 655 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 656 | } |
Johannes Berg | a30e311 | 2010-09-22 18:02:01 +0200 | [diff] [blame^] | 657 | EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 658 | |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 659 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 660 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| 661 | struct iwl_link_quality_cmd *lq) |
| 662 | { |
| 663 | int i; |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 664 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); |
| 665 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 666 | lq->general_params.single_stream_ant_msk, |
| 667 | lq->general_params.dual_stream_ant_msk); |
| 668 | |
| 669 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 670 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 671 | i, lq->rs_table[i].rate_n_flags); |
| 672 | } |
| 673 | #else |
| 674 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| 675 | struct iwl_link_quality_cmd *lq) |
| 676 | { |
| 677 | } |
| 678 | #endif |
| 679 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 680 | /** |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 681 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity |
| 682 | * |
| 683 | * It sometimes happens when a HT rate has been in use and we |
| 684 | * loose connectivity with AP then mac80211 will first tell us that the |
| 685 | * current channel is not HT anymore before removing the station. In such a |
| 686 | * scenario the RXON flags will be updated to indicate we are not |
| 687 | * communicating HT anymore, but the LQ command may still contain HT rates. |
| 688 | * Test for this to prevent driver from sending LQ command between the time |
| 689 | * RXON flags are updated and when LQ command is updated. |
| 690 | */ |
| 691 | static bool is_lq_table_valid(struct iwl_priv *priv, |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 692 | struct iwl_rxon_context *ctx, |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 693 | struct iwl_link_quality_cmd *lq) |
| 694 | { |
| 695 | int i; |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 696 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 697 | if (ctx->ht.enabled) |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 698 | return true; |
| 699 | |
| 700 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", |
Johannes Berg | 246ed35 | 2010-08-23 10:46:32 +0200 | [diff] [blame] | 701 | ctx->active.channel); |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 702 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
| 703 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { |
| 704 | IWL_DEBUG_INFO(priv, |
| 705 | "index %d of LQ expects HT channel\n", |
| 706 | i); |
| 707 | return false; |
| 708 | } |
| 709 | } |
| 710 | return true; |
| 711 | } |
| 712 | |
| 713 | /** |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 714 | * iwl_send_lq_cmd() - Send link quality command |
| 715 | * @init: This command is sent as part of station initialization right |
| 716 | * after station has been added. |
| 717 | * |
| 718 | * The link quality command is sent as the last step of station creation. |
| 719 | * This is the special case in which init is set and we call a callback in |
| 720 | * this case to clear the state indicating that station creation is in |
| 721 | * progress. |
| 722 | */ |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 723 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 724 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 725 | { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 726 | int ret = 0; |
| 727 | unsigned long flags_spin; |
| 728 | |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 729 | struct iwl_host_cmd cmd = { |
| 730 | .id = REPLY_TX_LINK_QUALITY_CMD, |
| 731 | .len = sizeof(struct iwl_link_quality_cmd), |
Johannes Berg | c2acea8 | 2009-07-24 11:13:05 -0700 | [diff] [blame] | 732 | .flags = flags, |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 733 | .data = lq, |
| 734 | }; |
| 735 | |
Johannes Berg | 76c3c69 | 2010-03-30 02:46:29 -0700 | [diff] [blame] | 736 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 737 | return -EINVAL; |
| 738 | |
Tomas Winkler | 3ac7f14 | 2008-07-21 02:40:14 +0300 | [diff] [blame] | 739 | iwl_dump_lq_cmd(priv, lq); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 740 | BUG_ON(init && (cmd.flags & CMD_ASYNC)); |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 741 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame] | 742 | if (is_lq_table_valid(priv, ctx, lq)) |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 743 | ret = iwl_send_cmd(priv, &cmd); |
| 744 | else |
| 745 | ret = -EINVAL; |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 746 | |
| 747 | if (cmd.flags & CMD_ASYNC) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 748 | return ret; |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 749 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 750 | if (init) { |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 751 | IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n", |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 752 | lq->sta_id); |
| 753 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| 754 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 755 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 756 | } |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 757 | return ret; |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 758 | } |
| 759 | EXPORT_SYMBOL(iwl_send_lq_cmd); |
| 760 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 761 | int iwl_mac_sta_remove(struct ieee80211_hw *hw, |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 762 | struct ieee80211_vif *vif, |
| 763 | struct ieee80211_sta *sta) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 764 | { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 765 | struct iwl_priv *priv = hw->priv; |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 766 | struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv; |
| 767 | int ret; |
| 768 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 769 | IWL_DEBUG_INFO(priv, "received request to remove station %pM\n", |
| 770 | sta->addr); |
Reinette Chatre | da5ae1c | 2010-05-28 09:28:39 -0700 | [diff] [blame] | 771 | mutex_lock(&priv->mutex); |
| 772 | IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", |
| 773 | sta->addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 774 | ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 775 | if (ret) |
| 776 | IWL_ERR(priv, "Error removing station %pM\n", |
| 777 | sta->addr); |
Reinette Chatre | da5ae1c | 2010-05-28 09:28:39 -0700 | [diff] [blame] | 778 | mutex_unlock(&priv->mutex); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 779 | return ret; |
| 780 | } |
| 781 | EXPORT_SYMBOL(iwl_mac_sta_remove); |