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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sta.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-sta.c712
1 files changed, 676 insertions, 36 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index e4fdfaa2b9b2..6d1467d0bd9d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -28,17 +28,446 @@
*****************************************************************************/
#include <net/mac80211.h>
+#include <linux/etherdevice.h>
-#include "iwl-eeprom.h"
-#include "iwl-4965.h"
+#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
-#include "iwl-io.h"
#include "iwl-helpers.h"
-#include "iwl-4965.h"
-#include "iwl-sta.h"
-int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
+
+#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;
@@ -91,6 +520,7 @@ int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
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)
@@ -107,10 +537,13 @@ int iwl_remove_default_wep_key(struct iwl_priv *priv,
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)
@@ -118,8 +551,14 @@ int iwl_set_default_wep_key(struct iwl_priv *priv,
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 = keyconf->keyidx;
+ keyconf->hw_key_idx = HW_KEY_DEFAULT;
priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
spin_lock_irqsave(&priv->sta_lock, flags);
@@ -134,10 +573,13 @@ int iwl_set_default_wep_key(struct iwl_priv *priv,
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,
@@ -148,7 +590,6 @@ static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
int ret;
keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
- keyconf->hw_key_idx = keyconf->keyidx;
key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
@@ -172,15 +613,18 @@ static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
memcpy(&priv->stations[sta_id].sta.key.key[3],
keyconf->key, keyconf->keylen);
- priv->stations[sta_id].sta.key.key_offset =
+ 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);
- priv->stations[sta_id].sta.key.key_flags = key_flags;
+ /* 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 = iwl4965_send_add_station(priv,
- &priv->stations[sta_id].sta, CMD_ASYNC);
+ ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
spin_unlock_irqrestore(&priv->sta_lock, flags);
@@ -202,7 +646,6 @@ static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
key_flags |= STA_KEY_MULTICAST_MSK;
keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
- keyconf->hw_key_idx = keyconf->keyidx;
spin_lock_irqsave(&priv->sta_lock, flags);
priv->stations[sta_id].keyinfo.alg = keyconf->alg;
@@ -214,8 +657,13 @@ static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
keyconf->keylen);
- priv->stations[sta_id].sta.key.key_offset =
- iwl_get_free_ucode_key_index(priv);
+ 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;
@@ -223,8 +671,7 @@ static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
spin_unlock_irqrestore(&priv->sta_lock, flags);
IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
- return iwl4965_send_add_station(priv,
- &priv->stations[sta_id].sta, CMD_ASYNC);
+ 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,
@@ -236,15 +683,18 @@ static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
- keyconf->hw_key_idx = keyconf->keyidx;
spin_lock_irqsave(&priv->sta_lock, flags);
priv->stations[sta_id].keyinfo.alg = keyconf->alg;
- priv->stations[sta_id].keyinfo.conf = keyconf;
priv->stations[sta_id].keyinfo.keylen = 16;
- priv->stations[sta_id].sta.key.key_offset =
+
+ 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);
@@ -256,54 +706,84 @@ static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
return ret;
}
-int iwl_remove_dynamic_key(struct iwl_priv *priv, u8 sta_id)
+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 = 0;
+ 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 iwl4965_hw_key));
+ 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;
+ 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;
- spin_unlock_irqrestore(&priv->sta_lock, flags);
- IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
- return iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
+ 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 *key, u8 sta_id)
+ struct ieee80211_key_conf *keyconf, u8 sta_id)
{
int ret;
- priv->key_mapping_key = 1;
+ priv->key_mapping_key++;
+ keyconf->hw_key_idx = HW_KEY_DYNAMIC;
- switch (key->alg) {
+ switch (keyconf->alg) {
case ALG_CCMP:
- ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
+ ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
break;
case ALG_TKIP:
- ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
+ ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
break;
case ALG_WEP:
- ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
+ ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
break;
default:
- IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
+ 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,
@@ -345,11 +825,171 @@ int iwl_send_lq_cmd(struct iwl_priv *priv,
iwl_dump_lq_cmd(priv,lq);
- if (iwl_is_associated(priv) && priv->assoc_station_added &&
- priv->lq_mngr.lq_ready)
+ 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);
+