| /****************************************************************************** |
| * |
| * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. |
| * |
| * Portions of this file are derived from the ipw3945 project, as well |
| * as portions of the ieee80211 subsystem header files. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| * |
| * The full GNU General Public License is included in this distribution in the |
| * file called LICENSE. |
| * |
| * Contact Information: |
| * James P. Ketrenos <ipw2100-admin@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #include <net/mac80211.h> |
| #include <linux/etherdevice.h> |
| |
| #include "iwl-dev.h" |
| #include "iwl-core.h" |
| #include "iwl-sta.h" |
| #include "iwl-helpers.h" |
| |
| |
| #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ |
| #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ |
| |
| u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr) |
| { |
| int i; |
| int start = 0; |
| int ret = IWL_INVALID_STATION; |
| unsigned long flags; |
| |
| if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) || |
| (priv->iw_mode == NL80211_IFTYPE_AP)) |
| start = IWL_STA_ID; |
| |
| if (is_broadcast_ether_addr(addr)) |
| return priv->hw_params.bcast_sta_id; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| for (i = start; i < priv->hw_params.max_stations; i++) |
| if (priv->stations[i].used && |
| (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
| addr))) { |
| ret = i; |
| goto out; |
| } |
| |
| IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n", |
| addr, priv->num_stations); |
| |
| out: |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_find_station); |
| |
| int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) |
| { |
| if (priv->iw_mode == NL80211_IFTYPE_STATION) { |
| return IWL_AP_ID; |
| } else { |
| u8 *da = ieee80211_get_DA(hdr); |
| return iwl_find_station(priv, da); |
| } |
| } |
| EXPORT_SYMBOL(iwl_get_ra_sta_id); |
| |
| static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
| IWL_ERROR("ACTIVATE a non DRIVER active station %d\n", sta_id); |
| |
| priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; |
| IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n", |
| priv->stations[sta_id].sta.sta.addr); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| } |
| |
| static int iwl_add_sta_callback(struct iwl_priv *priv, |
| struct iwl_cmd *cmd, struct sk_buff *skb) |
| { |
| struct iwl_rx_packet *res = NULL; |
| struct iwl_addsta_cmd *addsta = |
| (struct iwl_addsta_cmd *)cmd->cmd.payload; |
| u8 sta_id = addsta->sta.sta_id; |
| |
| if (!skb) { |
| IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n"); |
| return 1; |
| } |
| |
| res = (struct iwl_rx_packet *)skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", |
| res->hdr.flags); |
| return 1; |
| } |
| |
| switch (res->u.add_sta.status) { |
| case ADD_STA_SUCCESS_MSK: |
| iwl_sta_ucode_activate(priv, sta_id); |
| /* fall through */ |
| default: |
| IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n", |
| res->u.add_sta.status); |
| break; |
| } |
| |
| /* We didn't cache the SKB; let the caller free it */ |
| return 1; |
| } |
| |
| int iwl_send_add_sta(struct iwl_priv *priv, |
| struct iwl_addsta_cmd *sta, u8 flags) |
| { |
| struct iwl_rx_packet *res = NULL; |
| int ret = 0; |
| u8 data[sizeof(*sta)]; |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_ADD_STA, |
| .meta.flags = flags, |
| .data = data, |
| }; |
| |
| if (flags & CMD_ASYNC) |
| cmd.meta.u.callback = iwl_add_sta_callback; |
| else |
| cmd.meta.flags |= CMD_WANT_SKB; |
| |
| cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data); |
| ret = iwl_send_cmd(priv, &cmd); |
| |
| if (ret || (flags & CMD_ASYNC)) |
| return ret; |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", |
| res->hdr.flags); |
| ret = -EIO; |
| } |
| |
| if (ret == 0) { |
| switch (res->u.add_sta.status) { |
| case ADD_STA_SUCCESS_MSK: |
| iwl_sta_ucode_activate(priv, sta->sta.sta_id); |
| IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n"); |
| break; |
| default: |
| ret = -EIO; |
| IWL_WARNING("REPLY_ADD_STA failed\n"); |
| break; |
| } |
| } |
| |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_send_add_sta); |
| |
| static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, |
| struct ieee80211_sta_ht_cap *sta_ht_inf) |
| { |
| __le32 sta_flags; |
| u8 mimo_ps_mode; |
| |
| if (!sta_ht_inf || !sta_ht_inf->ht_supported) |
| goto done; |
| |
| mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; |
| |
| sta_flags = priv->stations[index].sta.station_flags; |
| |
| sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); |
| |
| switch (mimo_ps_mode) { |
| case WLAN_HT_CAP_SM_PS_STATIC: |
| sta_flags |= STA_FLG_MIMO_DIS_MSK; |
| break; |
| case WLAN_HT_CAP_SM_PS_DYNAMIC: |
| sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
| break; |
| case WLAN_HT_CAP_SM_PS_DISABLED: |
| break; |
| default: |
| IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode); |
| break; |
| } |
| |
| sta_flags |= cpu_to_le32( |
| (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
| |
| sta_flags |= cpu_to_le32( |
| (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
| |
| if (iwl_is_fat_tx_allowed(priv, sta_ht_inf)) |
| sta_flags |= STA_FLG_FAT_EN_MSK; |
| else |
| sta_flags &= ~STA_FLG_FAT_EN_MSK; |
| |
| priv->stations[index].sta.station_flags = sta_flags; |
| done: |
| return; |
| } |
| |
| /** |
| * iwl_add_station_flags - Add station to tables in driver and device |
| */ |
| u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap, |
| u8 flags, struct ieee80211_sta_ht_cap *ht_info) |
| { |
| int i; |
| int sta_id = IWL_INVALID_STATION; |
| struct iwl_station_entry *station; |
| unsigned long flags_spin; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags_spin); |
| if (is_ap) |
| sta_id = IWL_AP_ID; |
| else if (is_broadcast_ether_addr(addr)) |
| sta_id = priv->hw_params.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { |
| if (!compare_ether_addr(priv->stations[i].sta.sta.addr, |
| addr)) { |
| sta_id = i; |
| break; |
| } |
| |
| if (!priv->stations[i].used && |
| sta_id == IWL_INVALID_STATION) |
| sta_id = i; |
| } |
| |
| /* These two conditions have the same outcome, but keep them separate |
| since they have different meanings */ |
| if (unlikely(sta_id == IWL_INVALID_STATION)) { |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| return sta_id; |
| } |
| |
| if (priv->stations[sta_id].used && |
| !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| return sta_id; |
| } |
| |
| |
| station = &priv->stations[sta_id]; |
| station->used = IWL_STA_DRIVER_ACTIVE; |
| IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n", |
| sta_id, addr); |
| priv->num_stations++; |
| |
| /* Set up the REPLY_ADD_STA command to send to device */ |
| memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); |
| memcpy(station->sta.sta.addr, addr, ETH_ALEN); |
| station->sta.mode = 0; |
| station->sta.sta.sta_id = sta_id; |
| station->sta.station_flags = 0; |
| |
| /* BCAST station and IBSS stations do not work in HT mode */ |
| if (sta_id != priv->hw_params.bcast_sta_id && |
| priv->iw_mode != NL80211_IFTYPE_ADHOC) |
| iwl_set_ht_add_station(priv, sta_id, ht_info); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
| |
| /* Add station to device's station table */ |
| iwl_send_add_sta(priv, &station->sta, flags); |
| return sta_id; |
| |
| } |
| EXPORT_SYMBOL(iwl_add_station_flags); |
| |
| static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr) |
| { |
| unsigned long flags; |
| u8 sta_id = iwl_find_station(priv, addr); |
| |
| BUG_ON(sta_id == IWL_INVALID_STATION); |
| |
| IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr); |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| /* Ucode must be active and driver must be non active */ |
| if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE) |
| IWL_ERROR("removed non active STA %d\n", sta_id); |
| |
| priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; |
| |
| memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| } |
| |
| static int iwl_remove_sta_callback(struct iwl_priv *priv, |
| struct iwl_cmd *cmd, struct sk_buff *skb) |
| { |
| struct iwl_rx_packet *res = NULL; |
| struct iwl_rem_sta_cmd *rm_sta = |
| (struct iwl_rem_sta_cmd *)cmd->cmd.payload; |
| const char *addr = rm_sta->addr; |
| |
| if (!skb) { |
| IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n"); |
| return 1; |
| } |
| |
| res = (struct iwl_rx_packet *)skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n", |
| res->hdr.flags); |
| return 1; |
| } |
| |
| switch (res->u.rem_sta.status) { |
| case REM_STA_SUCCESS_MSK: |
| iwl_sta_ucode_deactivate(priv, addr); |
| break; |
| default: |
| IWL_ERROR("REPLY_REMOVE_STA failed\n"); |
| break; |
| } |
| |
| /* We didn't cache the SKB; let the caller free it */ |
| return 1; |
| } |
| |
| static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr, |
| u8 flags) |
| { |
| struct iwl_rx_packet *res = NULL; |
| int ret; |
| |
| struct iwl_rem_sta_cmd rm_sta_cmd; |
| |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_REMOVE_STA, |
| .len = sizeof(struct iwl_rem_sta_cmd), |
| .meta.flags = flags, |
| .data = &rm_sta_cmd, |
| }; |
| |
| memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); |
| rm_sta_cmd.num_sta = 1; |
| memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN); |
| |
| if (flags & CMD_ASYNC) |
| cmd.meta.u.callback = iwl_remove_sta_callback; |
| else |
| cmd.meta.flags |= CMD_WANT_SKB; |
| ret = iwl_send_cmd(priv, &cmd); |
| |
| if (ret || (flags & CMD_ASYNC)) |
| return ret; |
| |
| res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; |
| if (res->hdr.flags & IWL_CMD_FAILED_MSK) { |
| IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n", |
| res->hdr.flags); |
| ret = -EIO; |
| } |
| |
| if (!ret) { |
| switch (res->u.rem_sta.status) { |
| case REM_STA_SUCCESS_MSK: |
| iwl_sta_ucode_deactivate(priv, addr); |
| IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n"); |
| break; |
| default: |
| ret = -EIO; |
| IWL_ERROR("REPLY_REMOVE_STA failed\n"); |
| break; |
| } |
| } |
| |
| priv->alloc_rxb_skb--; |
| dev_kfree_skb_any(cmd.meta.u.skb); |
| |
| return ret; |
| } |
| |
| /** |
| * iwl_remove_station - Remove driver's knowledge of station. |
| */ |
| int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
| { |
| int sta_id = IWL_INVALID_STATION; |
| int i, ret = -EINVAL; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| if (is_ap) |
| sta_id = IWL_AP_ID; |
| else if (is_broadcast_ether_addr(addr)) |
| sta_id = priv->hw_params.bcast_sta_id; |
| else |
| for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) |
| if (priv->stations[i].used && |
| !compare_ether_addr(priv->stations[i].sta.sta.addr, |
| addr)) { |
| sta_id = i; |
| break; |
| } |
| |
| if (unlikely(sta_id == IWL_INVALID_STATION)) |
| goto out; |
| |
| IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n", |
| sta_id, addr); |
| |
| if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
| IWL_ERROR("Removing %pM but non DRIVER active\n", |
| addr); |
| goto out; |
| } |
| |
| if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { |
| IWL_ERROR("Removing %pM but non UCODE active\n", |
| addr); |
| goto out; |
| } |
| |
| |
| priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
| |
| priv->num_stations--; |
| |
| BUG_ON(priv->num_stations < 0); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| ret = iwl_send_remove_station(priv, addr, CMD_ASYNC); |
| return ret; |
| out: |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_remove_station); |
| |
| static int iwl_get_free_ucode_key_index(struct iwl_priv *priv) |
| { |
| int i; |
| |
| for (i = 0; i < STA_KEY_MAX_NUM; i++) |
| if (!test_and_set_bit(i, &priv->ucode_key_table)) |
| return i; |
| |
| return -1; |
| } |
| |
| int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty) |
| { |
| int i, not_empty = 0; |
| u8 buff[sizeof(struct iwl_wep_cmd) + |
| sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; |
| struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; |
| size_t cmd_size = sizeof(struct iwl_wep_cmd); |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_WEPKEY, |
| .data = wep_cmd, |
| .meta.flags = CMD_ASYNC, |
| }; |
| |
| memset(wep_cmd, 0, cmd_size + |
| (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); |
| |
| for (i = 0; i < WEP_KEYS_MAX ; i++) { |
| wep_cmd->key[i].key_index = i; |
| if (priv->wep_keys[i].key_size) { |
| wep_cmd->key[i].key_offset = i; |
| not_empty = 1; |
| } else { |
| wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; |
| } |
| |
| wep_cmd->key[i].key_size = priv->wep_keys[i].key_size; |
| memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key, |
| priv->wep_keys[i].key_size); |
| } |
| |
| wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; |
| wep_cmd->num_keys = WEP_KEYS_MAX; |
| |
| cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; |
| |
| cmd.len = cmd_size; |
| |
| if (not_empty || send_if_empty) |
| return iwl_send_cmd(priv, &cmd); |
| else |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_send_static_wepkey_cmd); |
| |
| int iwl_remove_default_wep_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf) |
| { |
| int ret; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table)) |
| IWL_ERROR("index %d not used in uCode key table.\n", |
| keyconf->keyidx); |
| |
| priv->default_wep_key--; |
| memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0])); |
| ret = iwl_send_static_wepkey_cmd(priv, 1); |
| IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n", |
| keyconf->keyidx, ret); |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_remove_default_wep_key); |
| |
| int iwl_set_default_wep_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf) |
| { |
| int ret; |
| unsigned long flags; |
| |
| if (keyconf->keylen != WEP_KEY_LEN_128 && |
| keyconf->keylen != WEP_KEY_LEN_64) { |
| IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen); |
| return -EINVAL; |
| } |
| |
| keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
| keyconf->hw_key_idx = HW_KEY_DEFAULT; |
| priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| priv->default_wep_key++; |
| |
| if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table)) |
| IWL_ERROR("index %d already used in uCode key table.\n", |
| keyconf->keyidx); |
| |
| priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; |
| memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key, |
| keyconf->keylen); |
| |
| ret = iwl_send_static_wepkey_cmd(priv, 0); |
| IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n", |
| keyconf->keylen, keyconf->keyidx, ret); |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_set_default_wep_key); |
| |
| static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| __le16 key_flags = 0; |
| int ret; |
| |
| keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
| |
| key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); |
| key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| key_flags &= ~STA_KEY_FLG_INVALID; |
| |
| if (keyconf->keylen == WEP_KEY_LEN_128) |
| key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; |
| |
| if (sta_id == priv->hw_params.bcast_sta_id) |
| key_flags |= STA_KEY_MULTICAST_MSK; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| priv->stations[sta_id].keyinfo.alg = keyconf->alg; |
| priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; |
| |
| memcpy(priv->stations[sta_id].keyinfo.key, |
| keyconf->key, keyconf->keylen); |
| |
| memcpy(&priv->stations[sta_id].sta.key.key[3], |
| keyconf->key, keyconf->keylen); |
| |
| if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| == STA_KEY_FLG_NO_ENC) |
| priv->stations[sta_id].sta.key.key_offset = |
| iwl_get_free_ucode_key_index(priv); |
| /* else, we are overriding an existing key => no need to allocated room |
| * in uCode. */ |
| |
| priv->stations[sta_id].sta.key.key_flags = key_flags; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| return ret; |
| } |
| |
| static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| __le16 key_flags = 0; |
| |
| key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); |
| key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
| key_flags &= ~STA_KEY_FLG_INVALID; |
| |
| if (sta_id == priv->hw_params.bcast_sta_id) |
| key_flags |= STA_KEY_MULTICAST_MSK; |
| |
| keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| priv->stations[sta_id].keyinfo.alg = keyconf->alg; |
| priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; |
| |
| memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, |
| keyconf->keylen); |
| |
| memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, |
| keyconf->keylen); |
| |
| if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| == STA_KEY_FLG_NO_ENC) |
| priv->stations[sta_id].sta.key.key_offset = |
| iwl_get_free_ucode_key_index(priv); |
| /* else, we are overriding an existing key => no need to allocated room |
| * in uCode. */ |
| |
| priv->stations[sta_id].sta.key.key_flags = key_flags; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n"); |
| return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| |
| static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| int ret = 0; |
| |
| keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| |
| priv->stations[sta_id].keyinfo.alg = keyconf->alg; |
| priv->stations[sta_id].keyinfo.keylen = 16; |
| |
| if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
| == STA_KEY_FLG_NO_ENC) |
| priv->stations[sta_id].sta.key.key_offset = |
| iwl_get_free_ucode_key_index(priv); |
| /* else, we are overriding an existing key => no need to allocated room |
| * in uCode. */ |
| |
| /* This copy is actually not needed: we get the key with each TX */ |
| memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16); |
| |
| memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16); |
| |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| return ret; |
| } |
| |
| int iwl_remove_dynamic_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, |
| u8 sta_id) |
| { |
| unsigned long flags; |
| int ret = 0; |
| u16 key_flags; |
| u8 keyidx; |
| |
| priv->key_mapping_key--; |
| |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags); |
| keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; |
| |
| IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n", |
| keyconf->keyidx, sta_id); |
| |
| if (keyconf->keyidx != keyidx) { |
| /* We need to remove a key with index different that the one |
| * in the uCode. This means that the key we need to remove has |
| * been replaced by another one with different index. |
| * Don't do anything and return ok |
| */ |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return 0; |
| } |
| |
| if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset, |
| &priv->ucode_key_table)) |
| IWL_ERROR("index %d not used in uCode key table.\n", |
| priv->stations[sta_id].sta.key.key_offset); |
| memset(&priv->stations[sta_id].keyinfo, 0, |
| sizeof(struct iwl_hw_key)); |
| memset(&priv->stations[sta_id].sta.key, 0, |
| sizeof(struct iwl4965_keyinfo)); |
| priv->stations[sta_id].sta.key.key_flags = |
| STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; |
| priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET; |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| |
| ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_remove_dynamic_key); |
| |
| int iwl_set_dynamic_key(struct iwl_priv *priv, |
| struct ieee80211_key_conf *keyconf, u8 sta_id) |
| { |
| int ret; |
| |
| priv->key_mapping_key++; |
| keyconf->hw_key_idx = HW_KEY_DYNAMIC; |
| |
| switch (keyconf->alg) { |
| case ALG_CCMP: |
| ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| case ALG_TKIP: |
| ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| case ALG_WEP: |
| ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id); |
| break; |
| default: |
| IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, keyconf->alg); |
| ret = -EINVAL; |
| } |
| |
| IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n", |
| keyconf->alg, keyconf->keylen, keyconf->keyidx, |
| sta_id, ret); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(iwl_set_dynamic_key); |
| |
| #ifdef CONFIG_IWLWIFI_DEBUG |
| static void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| struct iwl_link_quality_cmd *lq) |
| { |
| int i; |
| IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id); |
| IWL_DEBUG_RATE("lq ant 0x%X 0x%X\n", |
| lq->general_params.single_stream_ant_msk, |
| lq->general_params.dual_stream_ant_msk); |
| |
| for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) |
| IWL_DEBUG_RATE("lq index %d 0x%X\n", |
| i, lq->rs_table[i].rate_n_flags); |
| } |
| #else |
| static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, |
| struct iwl_link_quality_cmd *lq) |
| { |
| } |
| #endif |
| |
| int iwl_send_lq_cmd(struct iwl_priv *priv, |
| struct iwl_link_quality_cmd *lq, u8 flags) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_TX_LINK_QUALITY_CMD, |
| .len = sizeof(struct iwl_link_quality_cmd), |
| .meta.flags = flags, |
| .data = lq, |
| }; |
| |
| if ((lq->sta_id == 0xFF) && |
| (priv->iw_mode == NL80211_IFTYPE_ADHOC)) |
| return -EINVAL; |
| |
| if (lq->sta_id == 0xFF) |
| lq->sta_id = IWL_AP_ID; |
| |
| iwl_dump_lq_cmd(priv, lq); |
| |
| if (iwl_is_associated(priv) && priv->assoc_station_added) |
| return iwl_send_cmd(priv, &cmd); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(iwl_send_lq_cmd); |
| |
| /** |
| * iwl_sta_init_lq - Initialize a station's hardware rate table |
| * |
| * The uCode's station table contains a table of fallback rates |
| * for automatic fallback during transmission. |
| * |
| * NOTE: This sets up a default set of values. These will be replaced later |
| * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of |
| * rc80211_simple. |
| * |
| * NOTE: Run REPLY_ADD_STA command to set up station table entry, before |
| * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD, |
| * which requires station table entry to exist). |
| */ |
| static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap) |
| { |
| int i, r; |
| struct iwl_link_quality_cmd link_cmd = { |
| .reserved1 = 0, |
| }; |
| u32 rate_flags; |
| |
| /* Set up the rate scaling to start at selected rate, fall back |
| * all the way down to 1M in IEEE order, and then spin on 1M */ |
| if (is_ap) |
| r = IWL_RATE_54M_INDEX; |
| else if (priv->band == IEEE80211_BAND_5GHZ) |
| r = IWL_RATE_6M_INDEX; |
| else |
| r = IWL_RATE_1M_INDEX; |
| |
| for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
| rate_flags = 0; |
| if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) |
| rate_flags |= RATE_MCS_CCK_MSK; |
| |
| rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << |
| RATE_MCS_ANT_POS; |
| |
| link_cmd.rs_table[i].rate_n_flags = |
| iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); |
| r = iwl4965_get_prev_ieee_rate(r); |
| } |
| |
| link_cmd.general_params.single_stream_ant_msk = |
| first_antenna(priv->hw_params.valid_tx_ant); |
| link_cmd.general_params.dual_stream_ant_msk = 3; |
| link_cmd.agg_params.agg_dis_start_th = 3; |
| link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000); |
| |
| /* Update the rate scaling for control frame Tx to AP */ |
| link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id; |
| |
| iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD, |
| sizeof(link_cmd), &link_cmd, NULL); |
| } |
| |
| /** |
| * iwl_rxon_add_station - add station into station table. |
| * |
| * there is only one AP station with id= IWL_AP_ID |
| * NOTE: mutex must be held before calling this function |
| */ |
| int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
| { |
| struct ieee80211_sta *sta; |
| struct ieee80211_sta_ht_cap ht_config; |
| struct ieee80211_sta_ht_cap *cur_ht_config = NULL; |
| u8 sta_id; |
| |
| /* Add station to device's station table */ |
| |
| /* |
| * XXX: This check is definitely not correct, if we're an AP |
| * it'll always be false which is not what we want, but |
| * it doesn't look like iwlagn is prepared to be an HT |
| * AP anyway. |
| */ |
| if (priv->current_ht_config.is_ht) { |
| rcu_read_lock(); |
| sta = ieee80211_find_sta(priv->hw, addr); |
| if (sta) { |
| memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config)); |
| cur_ht_config = &ht_config; |
| } |
| rcu_read_unlock(); |
| } |
| |
| sta_id = iwl_add_station_flags(priv, addr, is_ap, |
| 0, cur_ht_config); |
| |
| /* Set up default rate scaling table in device's station table */ |
| iwl_sta_init_lq(priv, addr, is_ap); |
| |
| return sta_id; |
| } |
| EXPORT_SYMBOL(iwl_rxon_add_station); |
| |
| /** |
| * iwl_get_sta_id - Find station's index within station table |
| * |
| * If new IBSS station, create new entry in station table |
| */ |
| int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) |
| { |
| int sta_id; |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| |
| /* If this frame is broadcast or management, use broadcast station id */ |
| if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || |
| is_multicast_ether_addr(hdr->addr1)) |
| return priv->hw_params.bcast_sta_id; |
| |
| switch (priv->iw_mode) { |
| |
| /* If we are a client station in a BSS network, use the special |
| * AP station entry (that's the only station we communicate with) */ |
| case NL80211_IFTYPE_STATION: |
| return IWL_AP_ID; |
| |
| /* If we are an AP, then find the station, or use BCAST */ |
| case NL80211_IFTYPE_AP: |
| sta_id = iwl_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| return priv->hw_params.bcast_sta_id; |
| |
| /* If this frame is going out to an IBSS network, find the station, |
| * or create a new station table entry */ |
| case NL80211_IFTYPE_ADHOC: |
| sta_id = iwl_find_station(priv, hdr->addr1); |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| |
| /* Create new station table entry */ |
| sta_id = iwl_add_station_flags(priv, hdr->addr1, |
| 0, CMD_ASYNC, NULL); |
| |
| if (sta_id != IWL_INVALID_STATION) |
| return sta_id; |
| |
| IWL_DEBUG_DROP("Station %pM not in station map. " |
| "Defaulting to broadcast...\n", |
| hdr->addr1); |
| iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
| return priv->hw_params.bcast_sta_id; |
| |
| /* If we are in monitor mode, use BCAST. This is required for |
| * packet injection. */ |
| case NL80211_IFTYPE_MONITOR: |
| return priv->hw_params.bcast_sta_id; |
| |
| default: |
| IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode); |
| return priv->hw_params.bcast_sta_id; |
| } |
| } |
| EXPORT_SYMBOL(iwl_get_sta_id); |
| |
| /** |
| * iwl_sta_modify_enable_tid_tx - Enable Tx for this TID in station table |
| */ |
| void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv, int sta_id, int tid) |
| { |
| unsigned long flags; |
| |
| /* Remove "disable" flag, to enable Tx for this TID */ |
| spin_lock_irqsave(&priv->sta_lock, flags); |
| priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
| priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); |
| priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| |
| iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| EXPORT_SYMBOL(iwl_sta_modify_enable_tid_tx); |
| |