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 | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 231 | static u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 232 | const u8 *addr, bool is_ap, |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 233 | struct ieee80211_sta *sta) |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 234 | { |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 235 | struct iwl_station_entry *station; |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 236 | int i; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 237 | u8 sta_id = IWL_INVALID_STATION; |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 238 | u16 rate; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 239 | |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 240 | if (is_ap) |
Johannes Berg | 2995baf | 2010-08-23 10:46:42 +0200 | [diff] [blame] | 241 | sta_id = ctx->ap_sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 242 | else if (is_broadcast_ether_addr(addr)) |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 243 | sta_id = ctx->bcast_sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 244 | else |
| 245 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { |
| 246 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
| 247 | addr)) { |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 248 | sta_id = i; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 249 | break; |
| 250 | } |
| 251 | |
| 252 | if (!priv->stations[i].used && |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 253 | sta_id == IWL_INVALID_STATION) |
| 254 | sta_id = i; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 255 | } |
| 256 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 257 | /* |
| 258 | * These two conditions have the same outcome, but keep them |
| 259 | * separate |
| 260 | */ |
| 261 | if (unlikely(sta_id == IWL_INVALID_STATION)) |
| 262 | return sta_id; |
| 263 | |
| 264 | /* |
| 265 | * uCode is not able to deal with multiple requests to add a |
| 266 | * station. Keep track if one is in progress so that we do not send |
| 267 | * another. |
| 268 | */ |
| 269 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { |
| 270 | IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n", |
| 271 | sta_id); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 272 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 273 | } |
| 274 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 275 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
| 276 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 277 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 278 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n", |
| 279 | sta_id, addr); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 280 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 281 | } |
| 282 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 283 | station = &priv->stations[sta_id]; |
| 284 | station->used = IWL_STA_DRIVER_ACTIVE; |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 285 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 286 | sta_id, addr); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 287 | priv->num_stations++; |
| 288 | |
| 289 | /* Set up the REPLY_ADD_STA command to send to device */ |
| 290 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); |
| 291 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
| 292 | station->sta.mode = 0; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 293 | station->sta.sta.sta_id = sta_id; |
Johannes Berg | 770e13b | 2010-08-23 10:46:44 +0200 | [diff] [blame] | 294 | station->sta.station_flags = ctx->station_flags; |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 295 | station->ctxid = ctx->ctxid; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 296 | |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 297 | if (sta) { |
| 298 | struct iwl_station_priv_common *sta_priv; |
| 299 | |
| 300 | sta_priv = (void *)sta->drv_priv; |
| 301 | sta_priv->ctx = ctx; |
| 302 | } |
| 303 | |
Johannes Berg | 63d4176 | 2010-04-30 11:30:50 -0700 | [diff] [blame] | 304 | /* |
| 305 | * OK to call unconditionally, since local stations (IBSS BSSID |
Johannes Berg | 238d781 | 2010-08-23 10:46:45 +0200 | [diff] [blame] | 306 | * STA and broadcast STA) pass in a NULL sta, and mac80211 |
Johannes Berg | 63d4176 | 2010-04-30 11:30:50 -0700 | [diff] [blame] | 307 | * doesn't allow HT IBSS. |
| 308 | */ |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 309 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 310 | |
Tomas Winkler | c587de0 | 2009-06-03 11:44:07 -0700 | [diff] [blame] | 311 | /* 3945 only */ |
| 312 | rate = (priv->band == IEEE80211_BAND_5GHZ) ? |
| 313 | IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP; |
| 314 | /* Turn on both antennas for the station... */ |
| 315 | station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); |
| 316 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 317 | return sta_id; |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 318 | |
| 319 | } |
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 | |
Johannes Berg | a6a0345 | 2010-04-29 10:41:07 -0700 | [diff] [blame] | 384 | static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv, |
| 385 | u8 sta_id) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 386 | { |
| 387 | int i, r; |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 388 | struct iwl_link_quality_cmd *link_cmd; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 389 | u32 rate_flags; |
| 390 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 391 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); |
| 392 | if (!link_cmd) { |
| 393 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); |
| 394 | return NULL; |
| 395 | } |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 396 | /* Set up the rate scaling to start at selected rate, fall back |
| 397 | * all the way down to 1M in IEEE order, and then spin on 1M */ |
Johannes Berg | 156b70d | 2010-04-28 14:44:45 -0700 | [diff] [blame] | 398 | if (priv->band == IEEE80211_BAND_5GHZ) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 399 | r = IWL_RATE_6M_INDEX; |
| 400 | else |
| 401 | r = IWL_RATE_1M_INDEX; |
| 402 | |
| 403 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
| 404 | rate_flags = 0; |
| 405 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) |
| 406 | rate_flags |= RATE_MCS_CCK_MSK; |
| 407 | |
| 408 | rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << |
| 409 | RATE_MCS_ANT_POS; |
| 410 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 411 | link_cmd->rs_table[i].rate_n_flags = |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 412 | iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); |
| 413 | r = iwl_get_prev_ieee_rate(r); |
| 414 | } |
| 415 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 416 | link_cmd->general_params.single_stream_ant_msk = |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 417 | first_antenna(priv->hw_params.valid_tx_ant); |
Wey-Yi Guy | 3a23d69 | 2010-04-03 16:44:39 -0700 | [diff] [blame] | 418 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 419 | link_cmd->general_params.dual_stream_ant_msk = |
Wey-Yi Guy | 3a23d69 | 2010-04-03 16:44:39 -0700 | [diff] [blame] | 420 | priv->hw_params.valid_tx_ant & |
| 421 | ~first_antenna(priv->hw_params.valid_tx_ant); |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 422 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
| 423 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; |
Wey-Yi Guy | 3a23d69 | 2010-04-03 16:44:39 -0700 | [diff] [blame] | 424 | } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) { |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 425 | link_cmd->general_params.dual_stream_ant_msk = |
Wey-Yi Guy | 3a23d69 | 2010-04-03 16:44:39 -0700 | [diff] [blame] | 426 | priv->hw_params.valid_tx_ant; |
| 427 | } |
| 428 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 429 | link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; |
| 430 | link_cmd->agg_params.agg_time_limit = |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 431 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); |
| 432 | |
Johannes Berg | 156b70d | 2010-04-28 14:44:45 -0700 | [diff] [blame] | 433 | link_cmd->sta_id = sta_id; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 434 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 435 | return link_cmd; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /* |
Johannes Berg | 57f8db8 | 2010-04-30 11:30:49 -0700 | [diff] [blame] | 439 | * iwl_add_bssid_station - Add the special IBSS BSSID station |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 440 | * |
| 441 | * Function sleeps. |
| 442 | */ |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 443 | int iwl_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 444 | const u8 *addr, bool init_rs, u8 *sta_id_r) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 445 | { |
| 446 | int ret; |
| 447 | u8 sta_id; |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 448 | struct iwl_link_quality_cmd *link_cmd; |
| 449 | unsigned long flags; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 450 | |
Dan Carpenter | 96900c7 | 2010-05-14 16:53:46 +0200 | [diff] [blame] | 451 | if (sta_id_r) |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 452 | *sta_id_r = IWL_INVALID_STATION; |
| 453 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 454 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 455 | if (ret) { |
| 456 | IWL_ERR(priv, "Unable to add station %pM\n", addr); |
| 457 | return ret; |
| 458 | } |
| 459 | |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 460 | if (sta_id_r) |
| 461 | *sta_id_r = sta_id; |
| 462 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 463 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 464 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
| 465 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 466 | |
| 467 | if (init_rs) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 468 | /* Set up default rate scaling table in device's station table */ |
Johannes Berg | a6a0345 | 2010-04-29 10:41:07 -0700 | [diff] [blame] | 469 | link_cmd = iwl_sta_alloc_lq(priv, sta_id); |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 470 | if (!link_cmd) { |
| 471 | IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n", |
| 472 | addr); |
| 473 | return -ENOMEM; |
| 474 | } |
Johannes Berg | a6a0345 | 2010-04-29 10:41:07 -0700 | [diff] [blame] | 475 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 476 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); |
Johannes Berg | a6a0345 | 2010-04-29 10:41:07 -0700 | [diff] [blame] | 477 | if (ret) |
| 478 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); |
| 479 | |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 480 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 481 | priv->stations[sta_id].lq = link_cmd; |
| 482 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 483 | } |
| 484 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 485 | return 0; |
| 486 | } |
Johannes Berg | 57f8db8 | 2010-04-30 11:30:49 -0700 | [diff] [blame] | 487 | EXPORT_SYMBOL(iwl_add_bssid_station); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 488 | |
| 489 | /** |
| 490 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station |
| 491 | * |
| 492 | * priv->sta_lock must be held |
| 493 | */ |
| 494 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) |
| 495 | { |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 496 | /* Ucode must be active and driver must be non active */ |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 497 | if ((priv->stations[sta_id].used & |
| 498 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 499 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 500 | |
| 501 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; |
| 502 | |
| 503 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 504 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 505 | } |
| 506 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 507 | static int iwl_send_remove_station(struct iwl_priv *priv, |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 508 | const u8 *addr, int sta_id) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 509 | { |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 510 | struct iwl_rx_packet *pkt; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 511 | int ret; |
| 512 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 513 | unsigned long flags_spin; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 514 | struct iwl_rem_sta_cmd rm_sta_cmd; |
| 515 | |
| 516 | struct iwl_host_cmd cmd = { |
| 517 | .id = REPLY_REMOVE_STA, |
| 518 | .len = sizeof(struct iwl_rem_sta_cmd), |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 519 | .flags = CMD_SYNC, |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 520 | .data = &rm_sta_cmd, |
| 521 | }; |
| 522 | |
| 523 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); |
| 524 | rm_sta_cmd.num_sta = 1; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 525 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 526 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 527 | cmd.flags |= CMD_WANT_SKB; |
| 528 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 529 | ret = iwl_send_cmd(priv, &cmd); |
| 530 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 531 | if (ret) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 532 | return ret; |
| 533 | |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 534 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
| 535 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 536 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 537 | pkt->hdr.flags); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 538 | ret = -EIO; |
| 539 | } |
| 540 | |
| 541 | if (!ret) { |
Zhu Yi | 2f30122 | 2009-10-09 17:19:45 +0800 | [diff] [blame] | 542 | switch (pkt->u.rem_sta.status) { |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 543 | case REM_STA_SUCCESS_MSK: |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 544 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 545 | iwl_sta_ucode_deactivate(priv, sta_id); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 546 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 547 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 548 | break; |
| 549 | default: |
| 550 | ret = -EIO; |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 551 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 552 | break; |
| 553 | } |
| 554 | } |
Zhu Yi | 64a76b5 | 2009-12-10 14:37:21 -0800 | [diff] [blame] | 555 | iwl_free_pages(priv, cmd.reply_page); |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 556 | |
| 557 | return ret; |
| 558 | } |
Emmanuel Grumbach | be1f3ab6 | 2008-06-12 09:47:18 +0800 | [diff] [blame] | 559 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 560 | /** |
| 561 | * iwl_remove_station - Remove driver's knowledge of station. |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 562 | */ |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 563 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, |
| 564 | const u8 *addr) |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 565 | { |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 566 | unsigned long flags; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 567 | |
| 568 | if (!iwl_is_ready(priv)) { |
| 569 | IWL_DEBUG_INFO(priv, |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 570 | "Unable to remove station %pM, device not ready.\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 571 | addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 572 | /* |
| 573 | * It is typical for stations to be removed when we are |
| 574 | * going down. Return success since device will be down |
| 575 | * soon anyway |
| 576 | */ |
| 577 | return 0; |
| 578 | } |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 579 | |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 580 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 581 | sta_id, addr); |
| 582 | |
| 583 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) |
| 584 | return -EINVAL; |
| 585 | |
| 586 | spin_lock_irqsave(&priv->sta_lock, flags); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 587 | |
| 588 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 589 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 590 | addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 591 | goto out_err; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 592 | } |
| 593 | |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 594 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 595 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", |
Johannes Berg | c0222df | 2010-04-28 08:44:51 -0700 | [diff] [blame] | 596 | addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 597 | goto out_err; |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 598 | } |
| 599 | |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 600 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { |
| 601 | kfree(priv->stations[sta_id].lq); |
| 602 | priv->stations[sta_id].lq = NULL; |
| 603 | } |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 604 | |
| 605 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
| 606 | |
| 607 | priv->num_stations--; |
| 608 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 609 | BUG_ON(priv->num_stations < 0); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 610 | |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 611 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 612 | |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 613 | return iwl_send_remove_station(priv, addr, sta_id); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 614 | out_err: |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 615 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 616 | return -EINVAL; |
Tomas Winkler | 7a999bf | 2008-05-29 16:35:02 +0800 | [diff] [blame] | 617 | } |
Johannes Berg | 1fa61b2 | 2010-04-28 08:44:52 -0700 | [diff] [blame] | 618 | EXPORT_SYMBOL_GPL(iwl_remove_station); |
Emmanuel Grumbach | 24e5c40 | 2008-06-30 17:23:03 +0800 | [diff] [blame] | 619 | |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 620 | /** |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 621 | * iwl_clear_ucode_stations - clear ucode station table bits |
| 622 | * |
| 623 | * This function clears all the bits in the driver indicating |
| 624 | * which stations are active in the ucode. Call when something |
| 625 | * other than explicit station management would cause this in |
| 626 | * the ucode, e.g. unassociated RXON. |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 627 | */ |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 628 | void iwl_clear_ucode_stations(struct iwl_priv *priv, |
| 629 | struct iwl_rxon_context *ctx) |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 630 | { |
Mohamed Abbas | 48676eb | 2009-03-11 11:17:59 -0700 | [diff] [blame] | 631 | int i; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 632 | unsigned long flags_spin; |
| 633 | bool cleared = false; |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 634 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 635 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); |
Mohamed Abbas | 48676eb | 2009-03-11 11:17:59 -0700 | [diff] [blame] | 636 | |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 637 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 638 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 639 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) |
| 640 | continue; |
| 641 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 642 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { |
| 643 | IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i); |
| 644 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
| 645 | cleared = true; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 646 | } |
| 647 | } |
| 648 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 649 | |
| 650 | if (!cleared) |
| 651 | IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n"); |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 652 | } |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 653 | EXPORT_SYMBOL(iwl_clear_ucode_stations); |
| 654 | |
| 655 | /** |
| 656 | * iwl_restore_stations() - Restore driver known stations to device |
| 657 | * |
| 658 | * All stations considered active by driver, but not present in ucode, is |
| 659 | * restored. |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 660 | * |
| 661 | * Function sleeps. |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 662 | */ |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 663 | 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] | 664 | { |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 665 | struct iwl_addsta_cmd sta_cmd; |
| 666 | struct iwl_link_quality_cmd lq; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 667 | unsigned long flags_spin; |
| 668 | int i; |
| 669 | bool found = false; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 670 | int ret; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 671 | bool send_lq; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 672 | |
| 673 | if (!iwl_is_ready(priv)) { |
| 674 | IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n"); |
| 675 | return; |
| 676 | } |
| 677 | |
| 678 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); |
| 679 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| 680 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
Johannes Berg | dcef732 | 2010-08-27 08:55:52 -0700 | [diff] [blame] | 681 | if (ctx->ctxid != priv->stations[i].ctxid) |
| 682 | continue; |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 683 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && |
| 684 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { |
| 685 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", |
| 686 | priv->stations[i].sta.sta.addr); |
| 687 | priv->stations[i].sta.mode = 0; |
| 688 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; |
| 689 | found = true; |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
| 694 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 695 | memcpy(&sta_cmd, &priv->stations[i].sta, |
| 696 | sizeof(struct iwl_addsta_cmd)); |
| 697 | send_lq = false; |
| 698 | if (priv->stations[i].lq) { |
| 699 | memcpy(&lq, priv->stations[i].lq, |
| 700 | sizeof(struct iwl_link_quality_cmd)); |
| 701 | send_lq = true; |
| 702 | } |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 703 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 704 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 705 | if (ret) { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 706 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 707 | IWL_ERR(priv, "Adding station %pM failed.\n", |
| 708 | priv->stations[i].sta.sta.addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 709 | priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE; |
| 710 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 711 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 712 | } |
| 713 | /* |
| 714 | * Rate scaling has already been initialized, send |
| 715 | * current LQ command |
| 716 | */ |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 717 | if (send_lq) |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 718 | iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 719 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 720 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 725 | if (!found) |
| 726 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n"); |
| 727 | else |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 728 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n"); |
Reinette Chatre | 7e24619 | 2010-02-18 22:58:32 -0800 | [diff] [blame] | 729 | } |
| 730 | EXPORT_SYMBOL(iwl_restore_stations); |
Winkler, Tomas | 83dde8c | 2008-11-19 15:32:23 -0800 | [diff] [blame] | 731 | |
Abhijeet Kolekar | 6e21f15 | 2009-02-27 16:21:21 -0800 | [diff] [blame] | 732 | int iwl_get_free_ucode_key_index(struct iwl_priv *priv) |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 733 | { |
| 734 | int i; |
| 735 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 736 | for (i = 0; i < priv->sta_key_max_num; i++) |
Emmanuel Grumbach | 77bab60 | 2008-04-15 16:01:44 -0700 | [diff] [blame] | 737 | if (!test_and_set_bit(i, &priv->ucode_key_table)) |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 738 | return i; |
| 739 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 740 | return WEP_INVALID_OFFSET; |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 741 | } |
Abhijeet Kolekar | 6e21f15 | 2009-02-27 16:21:21 -0800 | [diff] [blame] | 742 | EXPORT_SYMBOL(iwl_get_free_ucode_key_index); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 743 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 744 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
| 745 | struct iwl_rxon_context *ctx, |
| 746 | bool send_if_empty) |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 747 | { |
| 748 | int i, not_empty = 0; |
| 749 | u8 buff[sizeof(struct iwl_wep_cmd) + |
| 750 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; |
| 751 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; |
| 752 | size_t cmd_size = sizeof(struct iwl_wep_cmd); |
| 753 | struct iwl_host_cmd cmd = { |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 754 | .id = ctx->wep_key_cmd, |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 755 | .data = wep_cmd, |
Johannes Berg | 72e15d7 | 2010-02-19 11:42:32 -0800 | [diff] [blame] | 756 | .flags = CMD_SYNC, |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 757 | }; |
| 758 | |
Johannes Berg | 72e15d7 | 2010-02-19 11:42:32 -0800 | [diff] [blame] | 759 | might_sleep(); |
| 760 | |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 761 | memset(wep_cmd, 0, cmd_size + |
| 762 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); |
| 763 | |
| 764 | for (i = 0; i < WEP_KEYS_MAX ; i++) { |
| 765 | wep_cmd->key[i].key_index = i; |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 766 | if (ctx->wep_keys[i].key_size) { |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 767 | wep_cmd->key[i].key_offset = i; |
| 768 | not_empty = 1; |
| 769 | } else { |
| 770 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; |
| 771 | } |
| 772 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 773 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; |
| 774 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, |
| 775 | ctx->wep_keys[i].key_size); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; |
| 779 | wep_cmd->num_keys = WEP_KEYS_MAX; |
| 780 | |
| 781 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; |
| 782 | |
| 783 | cmd.len = cmd_size; |
| 784 | |
| 785 | if (not_empty || send_if_empty) |
| 786 | return iwl_send_cmd(priv, &cmd); |
| 787 | else |
| 788 | return 0; |
| 789 | } |
Johannes Berg | 335348b | 2010-03-30 10:11:46 -0700 | [diff] [blame] | 790 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 791 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, |
| 792 | struct iwl_rxon_context *ctx) |
Johannes Berg | 335348b | 2010-03-30 10:11:46 -0700 | [diff] [blame] | 793 | { |
Johannes Berg | a24d52f | 2010-08-06 16:17:53 +0200 | [diff] [blame] | 794 | lockdep_assert_held(&priv->mutex); |
Johannes Berg | 335348b | 2010-03-30 10:11:46 -0700 | [diff] [blame] | 795 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 796 | return iwl_send_static_wepkey_cmd(priv, ctx, false); |
Johannes Berg | 335348b | 2010-03-30 10:11:46 -0700 | [diff] [blame] | 797 | } |
| 798 | EXPORT_SYMBOL(iwl_restore_default_wep_keys); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 799 | |
| 800 | int iwl_remove_default_wep_key(struct iwl_priv *priv, |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 801 | struct iwl_rxon_context *ctx, |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 802 | struct ieee80211_key_conf *keyconf) |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 803 | { |
| 804 | int ret; |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 805 | |
Johannes Berg | a24d52f | 2010-08-06 16:17:53 +0200 | [diff] [blame] | 806 | lockdep_assert_held(&priv->mutex); |
Johannes Berg | 72e15d7 | 2010-02-19 11:42:32 -0800 | [diff] [blame] | 807 | |
Reinette Chatre | 2d1bb9e | 2009-07-17 09:30:18 -0700 | [diff] [blame] | 808 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", |
| 809 | keyconf->keyidx); |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 810 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 811 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); |
Reinette Chatre | 2d1bb9e | 2009-07-17 09:30:18 -0700 | [diff] [blame] | 812 | if (iwl_is_rfkill(priv)) { |
| 813 | IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n"); |
Johannes Berg | 72e15d7 | 2010-02-19 11:42:32 -0800 | [diff] [blame] | 814 | /* but keys in device are clear anyway so return success */ |
Reinette Chatre | 2d1bb9e | 2009-07-17 09:30:18 -0700 | [diff] [blame] | 815 | return 0; |
| 816 | } |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 817 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 818 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 819 | keyconf->keyidx, ret); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 820 | |
| 821 | return ret; |
| 822 | } |
Tomas Winkler | 27aaba0 | 2008-05-05 10:22:44 +0800 | [diff] [blame] | 823 | EXPORT_SYMBOL(iwl_remove_default_wep_key); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 824 | |
| 825 | int iwl_set_default_wep_key(struct iwl_priv *priv, |
Johannes Berg | 2995baf | 2010-08-23 10:46:42 +0200 | [diff] [blame] | 826 | struct iwl_rxon_context *ctx, |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 827 | struct ieee80211_key_conf *keyconf) |
| 828 | { |
| 829 | int ret; |
Johannes Berg | 72e15d7 | 2010-02-19 11:42:32 -0800 | [diff] [blame] | 830 | |
Johannes Berg | a24d52f | 2010-08-06 16:17:53 +0200 | [diff] [blame] | 831 | lockdep_assert_held(&priv->mutex); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 832 | |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 833 | if (keyconf->keylen != WEP_KEY_LEN_128 && |
| 834 | keyconf->keylen != WEP_KEY_LEN_64) { |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 835 | IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen); |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 836 | return -EINVAL; |
| 837 | } |
| 838 | |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 839 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
Emmanuel Grumbach | ccc038a | 2008-05-15 13:54:09 +0800 | [diff] [blame] | 840 | keyconf->hw_key_idx = HW_KEY_DEFAULT; |
Johannes Berg | 2995baf | 2010-08-23 10:46:42 +0200 | [diff] [blame] | 841 | priv->stations[ctx->ap_sta_id].keyinfo.cipher = keyconf->cipher; |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 842 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 843 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; |
| 844 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 845 | keyconf->keylen); |
| 846 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 847 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 848 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 849 | keyconf->keylen, keyconf->keyidx, ret); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 850 | |
| 851 | return ret; |
| 852 | } |
Tomas Winkler | 27aaba0 | 2008-05-05 10:22:44 +0800 | [diff] [blame] | 853 | EXPORT_SYMBOL(iwl_set_default_wep_key); |
Emmanuel Grumbach | 6974e36 | 2008-04-14 21:16:06 -0700 | [diff] [blame] | 854 | |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 855 | static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv, |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 856 | struct iwl_rxon_context *ctx, |
| 857 | struct ieee80211_key_conf *keyconf, |
| 858 | u8 sta_id) |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 859 | { |
| 860 | unsigned long flags; |
| 861 | __le16 key_flags = 0; |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 862 | struct iwl_addsta_cmd sta_cmd; |
| 863 | |
| 864 | lockdep_assert_held(&priv->mutex); |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 865 | |
| 866 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 867 | |
| 868 | key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); |
| 869 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| 870 | key_flags &= ~STA_KEY_FLG_INVALID; |
| 871 | |
| 872 | if (keyconf->keylen == WEP_KEY_LEN_128) |
| 873 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; |
| 874 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 875 | if (sta_id == ctx->bcast_sta_id) |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 876 | key_flags |= STA_KEY_MULTICAST_MSK; |
| 877 | |
| 878 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 879 | |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 880 | priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 881 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| 882 | priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; |
| 883 | |
| 884 | memcpy(priv->stations[sta_id].keyinfo.key, |
| 885 | keyconf->key, keyconf->keylen); |
| 886 | |
| 887 | memcpy(&priv->stations[sta_id].sta.key.key[3], |
| 888 | keyconf->key, keyconf->keylen); |
| 889 | |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 890 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| 891 | == STA_KEY_FLG_NO_ENC) |
| 892 | priv->stations[sta_id].sta.key.key_offset = |
Emmanuel Grumbach | 80fb47a | 2008-04-14 21:16:08 -0700 | [diff] [blame] | 893 | iwl_get_free_ucode_key_index(priv); |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 894 | /* else, we are overriding an existing key => no need to allocated room |
| 895 | * in uCode. */ |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 896 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 897 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
Jiri Slaby | e724b8f | 2009-01-05 17:06:06 +0100 | [diff] [blame] | 898 | "no space for a new key"); |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 899 | |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 900 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 901 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| 902 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| 903 | |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 904 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 905 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 906 | |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 907 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Emmanuel Grumbach | 0211ddd | 2008-04-14 21:16:07 -0700 | [diff] [blame] | 908 | } |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 909 | |
| 910 | static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv, |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 911 | struct iwl_rxon_context *ctx, |
| 912 | struct ieee80211_key_conf *keyconf, |
| 913 | u8 sta_id) |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 914 | { |
| 915 | unsigned long flags; |
| 916 | __le16 key_flags = 0; |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 917 | struct iwl_addsta_cmd sta_cmd; |
| 918 | |
| 919 | lockdep_assert_held(&priv->mutex); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 920 | |
| 921 | key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); |
| 922 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| 923 | key_flags &= ~STA_KEY_FLG_INVALID; |
| 924 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 925 | if (sta_id == ctx->bcast_sta_id) |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 926 | key_flags |= STA_KEY_MULTICAST_MSK; |
| 927 | |
| 928 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 929 | |
| 930 | spin_lock_irqsave(&priv->sta_lock, flags); |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 931 | priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 932 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| 933 | |
| 934 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, |
| 935 | keyconf->keylen); |
| 936 | |
| 937 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, |
| 938 | keyconf->keylen); |
| 939 | |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 940 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| 941 | == STA_KEY_FLG_NO_ENC) |
| 942 | priv->stations[sta_id].sta.key.key_offset = |
| 943 | iwl_get_free_ucode_key_index(priv); |
| 944 | /* else, we are overriding an existing key => no need to allocated room |
| 945 | * in uCode. */ |
| 946 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 947 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
Jiri Slaby | e724b8f | 2009-01-05 17:06:06 +0100 | [diff] [blame] | 948 | "no space for a new key"); |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 949 | |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 950 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
| 951 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| 952 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| 953 | |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 954 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 955 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 956 | |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 957 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 958 | } |
| 959 | |
| 960 | static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv, |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 961 | struct iwl_rxon_context *ctx, |
| 962 | struct ieee80211_key_conf *keyconf, |
| 963 | u8 sta_id) |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 964 | { |
| 965 | unsigned long flags; |
| 966 | int ret = 0; |
Reinette Chatre | 299f546 | 2009-04-30 13:56:31 -0700 | [diff] [blame] | 967 | __le16 key_flags = 0; |
| 968 | |
| 969 | key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); |
| 970 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| 971 | key_flags &= ~STA_KEY_FLG_INVALID; |
| 972 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 973 | if (sta_id == ctx->bcast_sta_id) |
Reinette Chatre | 299f546 | 2009-04-30 13:56:31 -0700 | [diff] [blame] | 974 | key_flags |= STA_KEY_MULTICAST_MSK; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 975 | |
| 976 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| 977 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 978 | |
| 979 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 980 | |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 981 | priv->stations[sta_id].keyinfo.cipher = keyconf->cipher; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 982 | priv->stations[sta_id].keyinfo.keylen = 16; |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 983 | |
| 984 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| 985 | == STA_KEY_FLG_NO_ENC) |
| 986 | priv->stations[sta_id].sta.key.key_offset = |
Emmanuel Grumbach | 77bab60 | 2008-04-15 16:01:44 -0700 | [diff] [blame] | 987 | iwl_get_free_ucode_key_index(priv); |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 988 | /* else, we are overriding an existing key => no need to allocated room |
| 989 | * in uCode. */ |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 990 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 991 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
Jiri Slaby | e724b8f | 2009-01-05 17:06:06 +0100 | [diff] [blame] | 992 | "no space for a new key"); |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 993 | |
Reinette Chatre | 299f546 | 2009-04-30 13:56:31 -0700 | [diff] [blame] | 994 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
| 995 | |
| 996 | |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 997 | /* This copy is acutally not needed: we get the key with each TX */ |
| 998 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16); |
| 999 | |
| 1000 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16); |
| 1001 | |
| 1002 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1003 | |
| 1004 | return ret; |
| 1005 | } |
| 1006 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1007 | void iwl_update_tkip_key(struct iwl_priv *priv, |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1008 | struct iwl_rxon_context *ctx, |
| 1009 | struct ieee80211_key_conf *keyconf, |
| 1010 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1011 | { |
Johannes Berg | bdbb612 | 2010-04-30 13:53:37 -0700 | [diff] [blame] | 1012 | u8 sta_id; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1013 | unsigned long flags; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1014 | int i; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1015 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1016 | if (iwl_scan_cancel(priv)) { |
| 1017 | /* cancel scan failed, just live w/ bad key and rely |
| 1018 | briefly on SW decryption */ |
| 1019 | return; |
| 1020 | } |
| 1021 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1022 | sta_id = iwl_sta_id_or_broadcast(priv, ctx, sta); |
Johannes Berg | 0af8bca | 2010-04-30 14:08:00 -0700 | [diff] [blame] | 1023 | if (sta_id == IWL_INVALID_STATION) |
| 1024 | return; |
| 1025 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1026 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1027 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1028 | priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; |
| 1029 | |
| 1030 | for (i = 0; i < 5; i++) |
| 1031 | priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = |
| 1032 | cpu_to_le16(phase1key[i]); |
| 1033 | |
| 1034 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| 1035 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| 1036 | |
| 1037 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| 1038 | |
| 1039 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1040 | |
| 1041 | } |
| 1042 | EXPORT_SYMBOL(iwl_update_tkip_key); |
| 1043 | |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1044 | int iwl_remove_dynamic_key(struct iwl_priv *priv, |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 1045 | struct iwl_rxon_context *ctx, |
| 1046 | struct ieee80211_key_conf *keyconf, |
| 1047 | u8 sta_id) |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1048 | { |
| 1049 | unsigned long flags; |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1050 | u16 key_flags; |
| 1051 | u8 keyidx; |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 1052 | struct iwl_addsta_cmd sta_cmd; |
| 1053 | |
| 1054 | lockdep_assert_held(&priv->mutex); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1055 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 1056 | ctx->key_mapping_keys--; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1057 | |
| 1058 | spin_lock_irqsave(&priv->sta_lock, flags); |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1059 | key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags); |
| 1060 | keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; |
| 1061 | |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 1062 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 1063 | keyconf->keyidx, sta_id); |
| 1064 | |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1065 | if (keyconf->keyidx != keyidx) { |
| 1066 | /* We need to remove a key with index different that the one |
| 1067 | * in the uCode. This means that the key we need to remove has |
| 1068 | * been replaced by another one with different index. |
| 1069 | * Don't do anything and return ok |
| 1070 | */ |
| 1071 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1072 | return 0; |
| 1073 | } |
| 1074 | |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 1075 | if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) { |
Winkler, Tomas | 39aadf8 | 2008-12-19 10:37:32 +0800 | [diff] [blame] | 1076 | IWL_WARN(priv, "Removing wrong key %d 0x%x\n", |
Tomas Winkler | 40a9a82 | 2008-11-25 23:29:03 +0200 | [diff] [blame] | 1077 | keyconf->keyidx, key_flags); |
| 1078 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1079 | return 0; |
| 1080 | } |
| 1081 | |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1082 | if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset, |
| 1083 | &priv->ucode_key_table)) |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 1084 | IWL_ERR(priv, "index %d not used in uCode key table.\n", |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1085 | priv->stations[sta_id].sta.key.key_offset); |
| 1086 | memset(&priv->stations[sta_id].keyinfo, 0, |
Tomas Winkler | 6def976 | 2008-05-05 10:22:31 +0800 | [diff] [blame] | 1087 | sizeof(struct iwl_hw_key)); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1088 | memset(&priv->stations[sta_id].sta.key, 0, |
| 1089 | sizeof(struct iwl4965_keyinfo)); |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1090 | priv->stations[sta_id].sta.key.key_flags = |
| 1091 | STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; |
| 1092 | priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1093 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| 1094 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1095 | |
Reinette Chatre | 2d1bb9e | 2009-07-17 09:30:18 -0700 | [diff] [blame] | 1096 | if (iwl_is_rfkill(priv)) { |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 1097 | IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n"); |
Reinette Chatre | 2d1bb9e | 2009-07-17 09:30:18 -0700 | [diff] [blame] | 1098 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1099 | return 0; |
| 1100 | } |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 1101 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Emmanuel Grumbach | 3ec4773 | 2008-04-17 16:03:36 -0700 | [diff] [blame] | 1102 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 1103 | |
| 1104 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1105 | } |
Tomas Winkler | 27aaba0 | 2008-05-05 10:22:44 +0800 | [diff] [blame] | 1106 | EXPORT_SYMBOL(iwl_remove_dynamic_key); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1107 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1108 | int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 1109 | struct ieee80211_key_conf *keyconf, u8 sta_id) |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1110 | { |
| 1111 | int ret; |
| 1112 | |
Johannes Berg | e666674 | 2010-06-14 08:32:24 -0700 | [diff] [blame] | 1113 | lockdep_assert_held(&priv->mutex); |
| 1114 | |
Johannes Berg | c10afb6 | 2010-08-23 10:46:43 +0200 | [diff] [blame] | 1115 | ctx->key_mapping_keys++; |
Emmanuel Grumbach | ccc038a | 2008-05-15 13:54:09 +0800 | [diff] [blame] | 1116 | keyconf->hw_key_idx = HW_KEY_DYNAMIC; |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1117 | |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1118 | switch (keyconf->cipher) { |
| 1119 | case WLAN_CIPHER_SUITE_CCMP: |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1120 | ret = iwl_set_ccmp_dynamic_key_info(priv, ctx, keyconf, sta_id); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1121 | break; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1122 | case WLAN_CIPHER_SUITE_TKIP: |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1123 | ret = iwl_set_tkip_dynamic_key_info(priv, ctx, keyconf, sta_id); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1124 | break; |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1125 | case WLAN_CIPHER_SUITE_WEP40: |
| 1126 | case WLAN_CIPHER_SUITE_WEP104: |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1127 | ret = iwl_set_wep_dynamic_key_info(priv, ctx, keyconf, sta_id); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1128 | break; |
| 1129 | default: |
Winkler, Tomas | 15b1687 | 2008-12-19 10:37:33 +0800 | [diff] [blame] | 1130 | IWL_ERR(priv, |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1131 | "Unknown alg: %s cipher = %x\n", __func__, |
| 1132 | keyconf->cipher); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1133 | ret = -EINVAL; |
| 1134 | } |
| 1135 | |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 1136 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n", |
| 1137 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
Emmanuel Grumbach | 4564ce8 | 2008-06-12 09:47:09 +0800 | [diff] [blame] | 1138 | sta_id, ret); |
| 1139 | |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1140 | return ret; |
| 1141 | } |
Tomas Winkler | 27aaba0 | 2008-05-05 10:22:44 +0800 | [diff] [blame] | 1142 | EXPORT_SYMBOL(iwl_set_dynamic_key); |
Emmanuel Grumbach | 7480513 | 2008-04-14 21:16:09 -0700 | [diff] [blame] | 1143 | |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1144 | #ifdef CONFIG_IWLWIFI_DEBUG |
| 1145 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| 1146 | struct iwl_link_quality_cmd *lq) |
| 1147 | { |
| 1148 | int i; |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 1149 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); |
| 1150 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1151 | lq->general_params.single_stream_ant_msk, |
| 1152 | lq->general_params.dual_stream_ant_msk); |
| 1153 | |
| 1154 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
Tomas Winkler | e162344 | 2009-01-27 14:27:56 -0800 | [diff] [blame] | 1155 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1156 | i, lq->rs_table[i].rate_n_flags); |
| 1157 | } |
| 1158 | #else |
| 1159 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| 1160 | struct iwl_link_quality_cmd *lq) |
| 1161 | { |
| 1162 | } |
| 1163 | #endif |
| 1164 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1165 | /** |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1166 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity |
| 1167 | * |
| 1168 | * It sometimes happens when a HT rate has been in use and we |
| 1169 | * loose connectivity with AP then mac80211 will first tell us that the |
| 1170 | * current channel is not HT anymore before removing the station. In such a |
| 1171 | * scenario the RXON flags will be updated to indicate we are not |
| 1172 | * communicating HT anymore, but the LQ command may still contain HT rates. |
| 1173 | * Test for this to prevent driver from sending LQ command between the time |
| 1174 | * RXON flags are updated and when LQ command is updated. |
| 1175 | */ |
| 1176 | static bool is_lq_table_valid(struct iwl_priv *priv, |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 1177 | struct iwl_rxon_context *ctx, |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1178 | struct iwl_link_quality_cmd *lq) |
| 1179 | { |
| 1180 | int i; |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1181 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 1182 | if (ctx->ht.enabled) |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1183 | return true; |
| 1184 | |
| 1185 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", |
Johannes Berg | 246ed35 | 2010-08-23 10:46:32 +0200 | [diff] [blame] | 1186 | ctx->active.channel); |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1187 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
| 1188 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { |
| 1189 | IWL_DEBUG_INFO(priv, |
| 1190 | "index %d of LQ expects HT channel\n", |
| 1191 | i); |
| 1192 | return false; |
| 1193 | } |
| 1194 | } |
| 1195 | return true; |
| 1196 | } |
| 1197 | |
| 1198 | /** |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1199 | * iwl_send_lq_cmd() - Send link quality command |
| 1200 | * @init: This command is sent as part of station initialization right |
| 1201 | * after station has been added. |
| 1202 | * |
| 1203 | * The link quality command is sent as the last step of station creation. |
| 1204 | * This is the special case in which init is set and we call a callback in |
| 1205 | * this case to clear the state indicating that station creation is in |
| 1206 | * progress. |
| 1207 | */ |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 1208 | 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] | 1209 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1210 | { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1211 | int ret = 0; |
| 1212 | unsigned long flags_spin; |
| 1213 | |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1214 | struct iwl_host_cmd cmd = { |
| 1215 | .id = REPLY_TX_LINK_QUALITY_CMD, |
| 1216 | .len = sizeof(struct iwl_link_quality_cmd), |
Johannes Berg | c2acea8 | 2009-07-24 11:13:05 -0700 | [diff] [blame] | 1217 | .flags = flags, |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1218 | .data = lq, |
| 1219 | }; |
| 1220 | |
Johannes Berg | 76c3c69 | 2010-03-30 02:46:29 -0700 | [diff] [blame] | 1221 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1222 | return -EINVAL; |
| 1223 | |
Tomas Winkler | 3ac7f14 | 2008-07-21 02:40:14 +0300 | [diff] [blame] | 1224 | iwl_dump_lq_cmd(priv, lq); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1225 | BUG_ON(init && (cmd.flags & CMD_ASYNC)); |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1226 | |
Johannes Berg | 7e6a588 | 2010-08-23 10:46:46 +0200 | [diff] [blame^] | 1227 | if (is_lq_table_valid(priv, ctx, lq)) |
Reinette Chatre | 3bce606 | 2010-04-13 16:11:19 -0700 | [diff] [blame] | 1228 | ret = iwl_send_cmd(priv, &cmd); |
| 1229 | else |
| 1230 | ret = -EINVAL; |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 1231 | |
| 1232 | if (cmd.flags & CMD_ASYNC) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1233 | return ret; |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1234 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1235 | if (init) { |
Frans Pop | 91dd6c2 | 2010-03-24 14:19:58 -0700 | [diff] [blame] | 1236 | 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] | 1237 | lq->sta_id); |
| 1238 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| 1239 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
| 1240 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| 1241 | } |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 1242 | return ret; |
Tomas Winkler | 66c73db | 2008-04-15 16:01:40 -0700 | [diff] [blame] | 1243 | } |
| 1244 | EXPORT_SYMBOL(iwl_send_lq_cmd); |
| 1245 | |
Tomas Winkler | 4f40e4d | 2008-05-15 13:54:04 +0800 | [diff] [blame] | 1246 | /** |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1247 | * iwl_alloc_bcast_station - add broadcast station into driver's station table. |
| 1248 | * |
| 1249 | * This adds the broadcast station into the driver's station table |
| 1250 | * and marks it driver active, so that it will be restored to the |
| 1251 | * device at the next best time. |
Reinette Chatre | 9a9ca65 | 2009-10-30 14:36:12 -0700 | [diff] [blame] | 1252 | */ |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1253 | int iwl_alloc_bcast_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
| 1254 | bool init_lq) |
Reinette Chatre | 9a9ca65 | 2009-10-30 14:36:12 -0700 | [diff] [blame] | 1255 | { |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1256 | struct iwl_link_quality_cmd *link_cmd; |
| 1257 | unsigned long flags; |
| 1258 | u8 sta_id; |
Reinette Chatre | 9a9ca65 | 2009-10-30 14:36:12 -0700 | [diff] [blame] | 1259 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1260 | spin_lock_irqsave(&priv->sta_lock, flags); |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1261 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1262 | if (sta_id == IWL_INVALID_STATION) { |
| 1263 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); |
| 1264 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1265 | |
| 1266 | return -EINVAL; |
| 1267 | } |
| 1268 | |
| 1269 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; |
| 1270 | priv->stations[sta_id].used |= IWL_STA_BCAST; |
| 1271 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1272 | |
| 1273 | if (init_lq) { |
| 1274 | link_cmd = iwl_sta_alloc_lq(priv, sta_id); |
| 1275 | if (!link_cmd) { |
| 1276 | IWL_ERR(priv, |
| 1277 | "Unable to initialize rate scaling for bcast station.\n"); |
| 1278 | return -ENOMEM; |
| 1279 | } |
| 1280 | |
| 1281 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1282 | priv->stations[sta_id].lq = link_cmd; |
| 1283 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1284 | } |
| 1285 | |
| 1286 | return 0; |
| 1287 | } |
| 1288 | EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station); |
| 1289 | |
Daniel Halperin | 278c2f6 | 2010-06-14 13:10:29 -0700 | [diff] [blame] | 1290 | /** |
| 1291 | * iwl_update_bcast_station - update broadcast station's LQ command |
| 1292 | * |
| 1293 | * Only used by iwlagn. Placed here to have all bcast station management |
| 1294 | * code together. |
| 1295 | */ |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1296 | static int iwl_update_bcast_station(struct iwl_priv *priv, |
| 1297 | struct iwl_rxon_context *ctx) |
Daniel Halperin | 278c2f6 | 2010-06-14 13:10:29 -0700 | [diff] [blame] | 1298 | { |
| 1299 | unsigned long flags; |
| 1300 | struct iwl_link_quality_cmd *link_cmd; |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1301 | u8 sta_id = ctx->bcast_sta_id; |
Daniel Halperin | 278c2f6 | 2010-06-14 13:10:29 -0700 | [diff] [blame] | 1302 | |
| 1303 | link_cmd = iwl_sta_alloc_lq(priv, sta_id); |
| 1304 | if (!link_cmd) { |
| 1305 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); |
| 1306 | return -ENOMEM; |
| 1307 | } |
| 1308 | |
| 1309 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1310 | if (priv->stations[sta_id].lq) |
| 1311 | kfree(priv->stations[sta_id].lq); |
| 1312 | else |
| 1313 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); |
| 1314 | priv->stations[sta_id].lq = link_cmd; |
| 1315 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1316 | |
| 1317 | return 0; |
| 1318 | } |
Daniel Halperin | 278c2f6 | 2010-06-14 13:10:29 -0700 | [diff] [blame] | 1319 | |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1320 | int iwl_update_bcast_stations(struct iwl_priv *priv) |
| 1321 | { |
| 1322 | struct iwl_rxon_context *ctx; |
| 1323 | int ret = 0; |
| 1324 | |
| 1325 | for_each_context(priv, ctx) { |
| 1326 | ret = iwl_update_bcast_station(priv, ctx); |
| 1327 | if (ret) |
| 1328 | break; |
| 1329 | } |
| 1330 | |
| 1331 | return ret; |
| 1332 | } |
| 1333 | EXPORT_SYMBOL_GPL(iwl_update_bcast_stations); |
| 1334 | |
| 1335 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) |
Reinette Chatre | 3459ab5 | 2010-01-22 14:22:49 -0800 | [diff] [blame] | 1336 | { |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1337 | unsigned long flags; |
| 1338 | int i; |
Reinette Chatre | d2e210a | 2010-04-23 10:33:33 -0700 | [diff] [blame] | 1339 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1340 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1341 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
| 1342 | if (!(priv->stations[i].used & IWL_STA_BCAST)) |
| 1343 | continue; |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1344 | |
Johannes Berg | 2c810cc | 2010-04-29 00:53:29 -0700 | [diff] [blame] | 1345 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; |
| 1346 | priv->num_stations--; |
| 1347 | BUG_ON(priv->num_stations < 0); |
| 1348 | kfree(priv->stations[i].lq); |
| 1349 | priv->stations[i].lq = NULL; |
| 1350 | } |
| 1351 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Reinette Chatre | 3459ab5 | 2010-01-22 14:22:49 -0800 | [diff] [blame] | 1352 | } |
Johannes Berg | a194e32 | 2010-08-27 08:53:46 -0700 | [diff] [blame] | 1353 | EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations); |
Reinette Chatre | 3459ab5 | 2010-01-22 14:22:49 -0800 | [diff] [blame] | 1354 | |
| 1355 | /** |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1356 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table |
Tomas Winkler | 5083e56 | 2008-05-29 16:35:15 +0800 | [diff] [blame] | 1357 | */ |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1358 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) |
Tomas Winkler | 5083e56 | 2008-05-29 16:35:15 +0800 | [diff] [blame] | 1359 | { |
| 1360 | unsigned long flags; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1361 | struct iwl_addsta_cmd sta_cmd; |
| 1362 | |
| 1363 | lockdep_assert_held(&priv->mutex); |
Tomas Winkler | 5083e56 | 2008-05-29 16:35:15 +0800 | [diff] [blame] | 1364 | |
| 1365 | /* Remove "disable" flag, to enable Tx for this TID */ |
| 1366 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1367 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
| 1368 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); |
| 1369 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1370 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 1371 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1372 | |
| 1373 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Tomas Winkler | 5083e56 | 2008-05-29 16:35:15 +0800 | [diff] [blame] | 1374 | } |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1375 | EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid); |
| 1376 | |
Johannes Berg | 619753f | 2010-04-30 11:30:46 -0700 | [diff] [blame] | 1377 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, |
| 1378 | int tid, u16 ssn) |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1379 | { |
| 1380 | unsigned long flags; |
| 1381 | int sta_id; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1382 | struct iwl_addsta_cmd sta_cmd; |
| 1383 | |
| 1384 | lockdep_assert_held(&priv->mutex); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1385 | |
Johannes Berg | 619753f | 2010-04-30 11:30:46 -0700 | [diff] [blame] | 1386 | sta_id = iwl_sta_id(sta); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1387 | if (sta_id == IWL_INVALID_STATION) |
| 1388 | return -ENXIO; |
| 1389 | |
| 1390 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1391 | priv->stations[sta_id].sta.station_flags_msk = 0; |
| 1392 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; |
| 1393 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; |
| 1394 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); |
| 1395 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1396 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1397 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1398 | |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1399 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1400 | } |
| 1401 | EXPORT_SYMBOL(iwl_sta_rx_agg_start); |
| 1402 | |
Johannes Berg | 619753f | 2010-04-30 11:30:46 -0700 | [diff] [blame] | 1403 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, |
| 1404 | int tid) |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1405 | { |
| 1406 | unsigned long flags; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1407 | int sta_id; |
| 1408 | struct iwl_addsta_cmd sta_cmd; |
| 1409 | |
| 1410 | lockdep_assert_held(&priv->mutex); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1411 | |
Johannes Berg | 619753f | 2010-04-30 11:30:46 -0700 | [diff] [blame] | 1412 | sta_id = iwl_sta_id(sta); |
Wey-Yi Guy | a2f1cbe | 2009-03-17 21:51:52 -0700 | [diff] [blame] | 1413 | if (sta_id == IWL_INVALID_STATION) { |
| 1414 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1415 | return -ENXIO; |
Wey-Yi Guy | a2f1cbe | 2009-03-17 21:51:52 -0700 | [diff] [blame] | 1416 | } |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1417 | |
| 1418 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1419 | priv->stations[sta_id].sta.station_flags_msk = 0; |
| 1420 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; |
| 1421 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; |
| 1422 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1423 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1424 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1425 | |
Johannes Berg | 4620fef | 2010-06-16 03:30:27 -0700 | [diff] [blame] | 1426 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1427 | } |
| 1428 | EXPORT_SYMBOL(iwl_sta_rx_agg_stop); |
| 1429 | |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1430 | void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1431 | { |
| 1432 | unsigned long flags; |
| 1433 | |
| 1434 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1435 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; |
| 1436 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; |
| 1437 | priv->stations[sta_id].sta.sta.modify_mask = 0; |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1438 | priv->stations[sta_id].sta.sleep_tx_count = 0; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1439 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 1440 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1441 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 1442 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1443 | } |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1444 | EXPORT_SYMBOL(iwl_sta_modify_ps_wake); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1445 | |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1446 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1447 | { |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1448 | unsigned long flags; |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1449 | |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1450 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 1451 | priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; |
| 1452 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; |
| 1453 | priv->stations[sta_id].sta.sta.modify_mask = |
| 1454 | STA_MODIFY_SLEEP_TX_COUNT_MSK; |
| 1455 | priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); |
| 1456 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
Reinette Chatre | 9c5ac09 | 2010-05-05 02:26:06 -0700 | [diff] [blame] | 1457 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
Johannes Berg | 6ab10ff | 2009-11-13 11:56:37 -0800 | [diff] [blame] | 1458 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1459 | |
Tomas Winkler | 9f58671 | 2008-11-12 13:14:05 -0800 | [diff] [blame] | 1460 | } |
Wey-Yi Guy | 74bcdb3 | 2010-03-17 13:34:34 -0700 | [diff] [blame] | 1461 | EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1462 | |
| 1463 | int iwl_mac_sta_remove(struct ieee80211_hw *hw, |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 1464 | struct ieee80211_vif *vif, |
| 1465 | struct ieee80211_sta *sta) |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1466 | { |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1467 | struct iwl_priv *priv = hw->priv; |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 1468 | struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv; |
| 1469 | int ret; |
| 1470 | |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1471 | IWL_DEBUG_INFO(priv, "received request to remove station %pM\n", |
| 1472 | sta->addr); |
Reinette Chatre | da5ae1c | 2010-05-28 09:28:39 -0700 | [diff] [blame] | 1473 | mutex_lock(&priv->mutex); |
| 1474 | IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", |
| 1475 | sta->addr); |
Johannes Berg | fd1af15 | 2010-04-30 11:30:43 -0700 | [diff] [blame] | 1476 | ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1477 | if (ret) |
| 1478 | IWL_ERR(priv, "Error removing station %pM\n", |
| 1479 | sta->addr); |
Reinette Chatre | da5ae1c | 2010-05-28 09:28:39 -0700 | [diff] [blame] | 1480 | mutex_unlock(&priv->mutex); |
Reinette Chatre | fe6b23d | 2010-02-22 16:24:47 -0800 | [diff] [blame] | 1481 | return ret; |
| 1482 | } |
| 1483 | EXPORT_SYMBOL(iwl_mac_sta_remove); |