diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sta.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sta.c | 995 |
1 files changed, 0 insertions, 995 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c deleted file mode 100644 index 6d1467d0bd9..00000000000 --- a/drivers/net/wireless/iwlwifi/iwl-sta.c +++ /dev/null @@ -1,995 +0,0 @@ -/****************************************************************************** - * - * 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; - DECLARE_MAC_BUF(mac); - - if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) || - (priv->iw_mode == IEEE80211_IF_TYPE_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 %s total %d\n", - print_mac(mac, 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 == IEEE80211_IF_TYPE_STA) { - 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; - DECLARE_MAC_BUF(mac); - - 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: %s\n", - print_mac(mac, 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; - u8 sta_id = cmd->cmd.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_ht_info *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_MIMO_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_MIMO_PS_STATIC: - sta_flags |= STA_FLG_MIMO_DIS_MSK; - break; - case WLAN_HT_CAP_MIMO_PS_DYNAMIC: - sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; - break; - case WLAN_HT_CAP_MIMO_PS_DISABLED: - break; - default: - IWL_WARNING("Invalid MIMO PS mode %d", 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_ht_info *ht_info) -{ - int i; - int sta_id = IWL_INVALID_STATION; - struct iwl_station_entry *station; - unsigned long flags_spin; - DECLARE_MAC_BUF(mac); - - 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: %s\n", - sta_id, print_mac(mac, 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 != IEEE80211_IF_TYPE_IBSS) - 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; - DECLARE_MAC_BUF(mac); - - u8 sta_id = iwl_find_station(priv, addr); - - BUG_ON(sta_id == IWL_INVALID_STATION); - - IWL_DEBUG_ASSOC("Removed STA from Ucode: %s\n", - print_mac(mac, 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; - const char *addr = cmd->cmd.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; - DECLARE_MAC_BUF(mac); - - 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 %s\n", - sta_id, print_mac(mac, addr)); - - if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { - IWL_ERROR("Removing %s but non DRIVER active\n", - print_mac(mac, addr)); - goto out; - } - - if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { - IWL_ERROR("Removing %s but non UCODE active\n", - print_mac(mac, 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 acutally 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 dta 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 == IEEE80211_IF_TYPE_IBSS)) - 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-4965-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, - }; - u16 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; - - /* Use Tx antenna B only */ - rate_flags |= RATE_MCS_ANT_B_MSK; /*FIXME:RS*/ - - 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 = 2; - 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 fnction - */ -int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) -{ - u8 sta_id; - - /* Add station to device's station table */ - struct ieee80211_conf *conf = &priv->hw->conf; - struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf; - - if ((is_ap) && - (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) && - (priv->iw_mode == IEEE80211_IF_TYPE_STA)) - sta_id = iwl_add_station_flags(priv, addr, is_ap, - 0, cur_ht_config); - else - sta_id = iwl_add_station_flags(priv, addr, is_ap, - 0, NULL); - - /* 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); - DECLARE_MAC_BUF(mac); - - /* 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 IEEE80211_IF_TYPE_STA: - return IWL_AP_ID; - - /* If we are an AP, then find the station, or use BCAST */ - case IEEE80211_IF_TYPE_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 IEEE80211_IF_TYPE_IBSS: - 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 %s not in station map. " - "Defaulting to broadcast...\n", - print_mac(mac, hdr->addr1)); - iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); - return priv->hw_params.bcast_sta_id; - - default: - IWL_WARNING("Unknown mode of operation: %d", 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); - |