+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2003 - 2014 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:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- *****************************************************************************/
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-#include "iwl-trans.h"
-#include "dev.h"
-#include "agn.h"
-
-const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
-
-static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
-{
- lockdep_assert_held(&priv->sta_lock);
-
- if (sta_id >= IWLAGN_STATION_COUNT) {
- IWL_ERR(priv, "invalid sta_id %u\n", sta_id);
- return -EINVAL;
- }
- if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
- IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u "
- "addr %pM\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
-
- if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
- IWL_DEBUG_ASSOC(priv,
- "STA id %u addr %pM already present in uCode "
- "(according to driver)\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
- } else {
- priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
- IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
- sta_id, priv->stations[sta_id].sta.sta.addr);
- }
- return 0;
-}
-
-static void iwl_process_add_sta_resp(struct iwl_priv *priv,
- struct iwl_rx_packet *pkt)
-{
- struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data;
-
- IWL_DEBUG_INFO(priv, "Processing response for adding station\n");
-
- spin_lock_bh(&priv->sta_lock);
-
- switch (add_sta_resp->status) {
- case ADD_STA_SUCCESS_MSK:
- IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
- break;
- case ADD_STA_NO_ROOM_IN_TABLE:
- IWL_ERR(priv, "Adding station failed, no room in table.\n");
- break;
- case ADD_STA_NO_BLOCK_ACK_RESOURCE:
- IWL_ERR(priv,
- "Adding station failed, no block ack resource.\n");
- break;
- case ADD_STA_MODIFY_NON_EXIST_STA:
- IWL_ERR(priv, "Attempting to modify non-existing station\n");
- break;
- default:
- IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
- add_sta_resp->status);
- break;
- }
-
- spin_unlock_bh(&priv->sta_lock);
-}
-
-void iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = rxb_addr(rxb);
-
- iwl_process_add_sta_resp(priv, pkt);
-}
-
-int iwl_send_add_sta(struct iwl_priv *priv,
- struct iwl_addsta_cmd *sta, u8 flags)
-{
- int ret = 0;
- struct iwl_host_cmd cmd = {
- .id = REPLY_ADD_STA,
- .flags = flags,
- .data = { sta, },
- .len = { sizeof(*sta), },
- };
- u8 sta_id __maybe_unused = sta->sta.sta_id;
- struct iwl_rx_packet *pkt;
- struct iwl_add_sta_resp *add_sta_resp;
-
- IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
- sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
-
- if (!(flags & CMD_ASYNC)) {
- cmd.flags |= CMD_WANT_SKB;
- might_sleep();
- }
-
- ret = iwl_dvm_send_cmd(priv, &cmd);
-
- if (ret || (flags & CMD_ASYNC))
- return ret;
-
- pkt = cmd.resp_pkt;
- add_sta_resp = (void *)pkt->data;
-
- /* debug messages are printed in the handler */
- if (add_sta_resp->status == ADD_STA_SUCCESS_MSK) {
- spin_lock_bh(&priv->sta_lock);
- ret = iwl_sta_ucode_activate(priv, sta_id);
- spin_unlock_bh(&priv->sta_lock);
- } else {
- ret = -EIO;
- }
-
- iwl_free_resp(&cmd);
-
- return ret;
-}
-
-bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_sta *sta)
-{
- if (!ctx->ht.enabled || !ctx->ht.is_40mhz)
- return false;
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (priv->disable_ht40)
- return false;
-#endif
-
- /* special case for RXON */
- if (!sta)
- return true;
-
- return sta->bandwidth >= IEEE80211_STA_RX_BW_40;
-}
-
-static void iwl_sta_calc_ht_flags(struct iwl_priv *priv,
- struct ieee80211_sta *sta,
- struct iwl_rxon_context *ctx,
- __le32 *flags, __le32 *mask)
-{
- struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
-
- *mask = STA_FLG_RTS_MIMO_PROT_MSK |
- STA_FLG_MIMO_DIS_MSK |
- STA_FLG_HT40_EN_MSK |
- STA_FLG_MAX_AGG_SIZE_MSK |
- STA_FLG_AGG_MPDU_DENSITY_MSK;
- *flags = 0;
-
- if (!sta || !sta_ht_inf->ht_supported)
- return;
-
- IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n",
- sta->addr,
- (sta->smps_mode == IEEE80211_SMPS_STATIC) ?
- "static" :
- (sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ?
- "dynamic" : "disabled");
-
- switch (sta->smps_mode) {
- case IEEE80211_SMPS_STATIC:
- *flags |= STA_FLG_MIMO_DIS_MSK;
- break;
- case IEEE80211_SMPS_DYNAMIC:
- *flags |= STA_FLG_RTS_MIMO_PROT_MSK;
- break;
- case IEEE80211_SMPS_OFF:
- break;
- default:
- IWL_WARN(priv, "Invalid MIMO PS mode %d\n", sta->smps_mode);
- break;
- }
-
- *flags |= cpu_to_le32(
- (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
-
- *flags |= cpu_to_le32(
- (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
-
- if (iwl_is_ht40_tx_allowed(priv, ctx, sta))
- *flags |= STA_FLG_HT40_EN_MSK;
-}
-
-int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- struct ieee80211_sta *sta)
-{
- u8 sta_id = iwl_sta_id(sta);
- __le32 flags, mask;
- struct iwl_addsta_cmd cmd;
-
- if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION))
- return -EINVAL;
-
- iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask);
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].sta.station_flags &= ~mask;
- priv->stations[sta_id].sta.station_flags |= flags;
- spin_unlock_bh(&priv->sta_lock);
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.mode = STA_CONTROL_MODIFY_MSK;
- cmd.station_flags_msk = mask;
- cmd.station_flags = flags;
- cmd.sta.sta_id = sta_id;
-
- return iwl_send_add_sta(priv, &cmd, 0);
-}
-
-static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
- struct ieee80211_sta *sta,
- struct iwl_rxon_context *ctx)
-{
- __le32 flags, mask;
-
- iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask);
-
- lockdep_assert_held(&priv->sta_lock);
- priv->stations[index].sta.station_flags &= ~mask;
- priv->stations[index].sta.station_flags |= flags;
-}
-
-/**
- * iwl_prep_station - Prepare station information for addition
- *
- * should be called with sta_lock held
- */
-u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
-{
- struct iwl_station_entry *station;
- int i;
- u8 sta_id = IWL_INVALID_STATION;
-
- if (is_ap)
- sta_id = ctx->ap_sta_id;
- else if (is_broadcast_ether_addr(addr))
- sta_id = ctx->bcast_sta_id;
- else
- for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
- if (ether_addr_equal(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
- */
- if (unlikely(sta_id == IWL_INVALID_STATION))
- return sta_id;
-
- /*
- * uCode is not able to deal with multiple requests to add a
- * station. Keep track if one is in progress so that we do not send
- * another.
- */
- if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
- IWL_DEBUG_INFO(priv, "STA %d already in process of being "
- "added.\n", sta_id);
- return sta_id;
- }
-
- if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
- (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
- ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) {
- IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
- "adding again.\n", sta_id, addr);
- return sta_id;
- }
-
- station = &priv->stations[sta_id];
- station->used = IWL_STA_DRIVER_ACTIVE;
- IWL_DEBUG_ASSOC(priv, "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 = ctx->station_flags;
- station->ctxid = ctx->ctxid;
-
- if (sta) {
- struct iwl_station_priv *sta_priv;
-
- sta_priv = (void *)sta->drv_priv;
- sta_priv->ctx = ctx;
- }
-
- /*
- * OK to call unconditionally, since local stations (IBSS BSSID
- * STA and broadcast STA) pass in a NULL sta, and mac80211
- * doesn't allow HT IBSS.
- */
- iwl_set_ht_add_station(priv, sta_id, sta, ctx);
-
- return sta_id;
-
-}
-
-#define STA_WAIT_TIMEOUT (HZ/2)
-
-/**
- * iwl_add_station_common -
- */
-int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- const u8 *addr, bool is_ap,
- struct ieee80211_sta *sta, u8 *sta_id_r)
-{
- int ret = 0;
- u8 sta_id;
- struct iwl_addsta_cmd sta_cmd;
-
- *sta_id_r = 0;
- spin_lock_bh(&priv->sta_lock);
- sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
- if (sta_id == IWL_INVALID_STATION) {
- IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
- addr);
- spin_unlock_bh(&priv->sta_lock);
- return -EINVAL;
- }
-
- /*
- * uCode is not able to deal with multiple requests to add a
- * station. Keep track if one is in progress so that we do not send
- * another.
- */
- if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
- IWL_DEBUG_INFO(priv, "STA %d already in process of being "
- "added.\n", sta_id);
- spin_unlock_bh(&priv->sta_lock);
- return -EEXIST;
- }
-
- if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
- (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
- IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
- "adding again.\n", sta_id, addr);
- spin_unlock_bh(&priv->sta_lock);
- return -EEXIST;
- }
-
- priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
- memcpy(&sta_cmd, &priv->stations[sta_id].sta,
- sizeof(struct iwl_addsta_cmd));
- spin_unlock_bh(&priv->sta_lock);
-
- /* Add station to device's station table */
- ret = iwl_send_add_sta(priv, &sta_cmd, 0);
- if (ret) {
- spin_lock_bh(&priv->sta_lock);
- IWL_ERR(priv, "Adding station %pM failed.\n",
- priv->stations[sta_id].sta.sta.addr);
- priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
- priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
- spin_unlock_bh(&priv->sta_lock);
- }
- *sta_id_r = sta_id;
- return ret;
-}
-
-/**
- * iwl_sta_ucode_deactivate - deactivate ucode status for a station
- */
-static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
-{
- lockdep_assert_held(&priv->sta_lock);
-
- /* Ucode must be active and driver must be non active */
- if ((priv->stations[sta_id].used &
- (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) !=
- IWL_STA_UCODE_ACTIVE)
- IWL_ERR(priv, "removed non active STA %u\n", sta_id);
-
- priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
-
- memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
- IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
-}
-
-static int iwl_send_remove_station(struct iwl_priv *priv,
- const u8 *addr, int sta_id,
- bool temporary)
-{
- struct iwl_rx_packet *pkt;
- int ret;
- struct iwl_rem_sta_cmd rm_sta_cmd;
- struct iwl_rem_sta_resp *rem_sta_resp;
-
- struct iwl_host_cmd cmd = {
- .id = REPLY_REMOVE_STA,
- .len = { sizeof(struct iwl_rem_sta_cmd), },
- .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);
-
- cmd.flags |= CMD_WANT_SKB;
-
- ret = iwl_dvm_send_cmd(priv, &cmd);
-
- if (ret)
- return ret;
-
- pkt = cmd.resp_pkt;
- rem_sta_resp = (void *)pkt->data;
-
- switch (rem_sta_resp->status) {
- case REM_STA_SUCCESS_MSK:
- if (!temporary) {
- spin_lock_bh(&priv->sta_lock);
- iwl_sta_ucode_deactivate(priv, sta_id);
- spin_unlock_bh(&priv->sta_lock);
- }
- IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
- break;
- default:
- ret = -EIO;
- IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
- break;
- }
-
- iwl_free_resp(&cmd);
-
- return ret;
-}
-
-/**
- * iwl_remove_station - Remove driver's knowledge of station.
- */
-int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
- const u8 *addr)
-{
- u8 tid;
-
- if (!iwl_is_ready(priv)) {
- IWL_DEBUG_INFO(priv,
- "Unable to remove station %pM, device not ready.\n",
- addr);
- /*
- * It is typical for stations to be removed when we are
- * going down. Return success since device will be down
- * soon anyway
- */
- return 0;
- }
-
- IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
- sta_id, addr);
-
- if (WARN_ON(sta_id == IWL_INVALID_STATION))
- return -EINVAL;
-
- spin_lock_bh(&priv->sta_lock);
-
- if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
- IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
- addr);
- goto out_err;
- }
-
- if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
- IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
- addr);
- goto out_err;
- }
-
- if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
- kfree(priv->stations[sta_id].lq);
- priv->stations[sta_id].lq = NULL;
- }
-
- for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
- memset(&priv->tid_data[sta_id][tid], 0,
- sizeof(priv->tid_data[sta_id][tid]));
-
- priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
-
- priv->num_stations--;
-
- if (WARN_ON(priv->num_stations < 0))
- priv->num_stations = 0;
-
- spin_unlock_bh(&priv->sta_lock);
-
- return iwl_send_remove_station(priv, addr, sta_id, false);
-out_err:
- spin_unlock_bh(&priv->sta_lock);
- return -EINVAL;
-}
-
-void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id,
- const u8 *addr)
-{
- u8 tid;
-
- if (!iwl_is_ready(priv)) {
- IWL_DEBUG_INFO(priv,
- "Unable to remove station %pM, device not ready.\n",
- addr);
- return;
- }
-
- IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id);
-
- if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION))
- return;
-
- spin_lock_bh(&priv->sta_lock);
-
- WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE));
-
- for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
- memset(&priv->tid_data[sta_id][tid], 0,
- sizeof(priv->tid_data[sta_id][tid]));
-
- priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
- priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
-
- priv->num_stations--;
-
- if (WARN_ON_ONCE(priv->num_stations < 0))
- priv->num_stations = 0;
-
- spin_unlock_bh(&priv->sta_lock);
-}
-
-static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- u8 sta_id, struct iwl_link_quality_cmd *link_cmd)
-{
- int i, r;
- u32 rate_flags = 0;
- __le32 rate_n_flags;
-
- lockdep_assert_held(&priv->mutex);
-
- memset(link_cmd, 0, sizeof(*link_cmd));
-
- /* 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 (priv->band == IEEE80211_BAND_5GHZ)
- r = IWL_RATE_6M_INDEX;
- else if (ctx && ctx->vif && ctx->vif->p2p)
- r = IWL_RATE_6M_INDEX;
- else
- r = IWL_RATE_1M_INDEX;
-
- if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
- rate_flags |= RATE_MCS_CCK_MSK;
-
- rate_flags |= first_antenna(priv->nvm_data->valid_tx_ant) <<
- RATE_MCS_ANT_POS;
- rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
- for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
- link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
-
- link_cmd->general_params.single_stream_ant_msk =
- first_antenna(priv->nvm_data->valid_tx_ant);
-
- link_cmd->general_params.dual_stream_ant_msk =
- priv->nvm_data->valid_tx_ant &
- ~first_antenna(priv->nvm_data->valid_tx_ant);
- if (!link_cmd->general_params.dual_stream_ant_msk) {
- link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
- } else if (num_of_ant(priv->nvm_data->valid_tx_ant) == 2) {
- link_cmd->general_params.dual_stream_ant_msk =
- priv->nvm_data->valid_tx_ant;
- }
-
- link_cmd->agg_params.agg_dis_start_th =
- LINK_QUAL_AGG_DISABLE_START_DEF;
- link_cmd->agg_params.agg_time_limit =
- cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
-
- link_cmd->sta_id = sta_id;
-}
-
-/**
- * iwl_clear_ucode_stations - clear ucode station table bits
- *
- * This function clears all the bits in the driver indicating
- * which stations are active in the ucode. Call when something
- * other than explicit station management would cause this in
- * the ucode, e.g. unassociated RXON.
- */
-void iwl_clear_ucode_stations(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- int i;
- bool cleared = false;
-
- IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
-
- spin_lock_bh(&priv->sta_lock);
- for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
- if (ctx && ctx->ctxid != priv->stations[i].ctxid)
- continue;
-
- if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
- IWL_DEBUG_INFO(priv,
- "Clearing ucode active for station %d\n", i);
- priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
- cleared = true;
- }
- }
- spin_unlock_bh(&priv->sta_lock);
-
- if (!cleared)
- IWL_DEBUG_INFO(priv,
- "No active stations found to be cleared\n");
-}
-
-/**
- * iwl_restore_stations() - Restore driver known stations to device
- *
- * All stations considered active by driver, but not present in ucode, is
- * restored.
- *
- * Function sleeps.
- */
-void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
-{
- struct iwl_addsta_cmd sta_cmd;
- static const struct iwl_link_quality_cmd zero_lq = {};
- struct iwl_link_quality_cmd lq;
- int i;
- bool found = false;
- int ret;
- bool send_lq;
-
- if (!iwl_is_ready(priv)) {
- IWL_DEBUG_INFO(priv,
- "Not ready yet, not restoring any stations.\n");
- return;
- }
-
- IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
- spin_lock_bh(&priv->sta_lock);
- for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
- if (ctx->ctxid != priv->stations[i].ctxid)
- continue;
- if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
- !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
- IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
- priv->stations[i].sta.sta.addr);
- priv->stations[i].sta.mode = 0;
- priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
- found = true;
- }
- }
-
- for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
- if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
- memcpy(&sta_cmd, &priv->stations[i].sta,
- sizeof(struct iwl_addsta_cmd));
- send_lq = false;
- if (priv->stations[i].lq) {
- if (priv->wowlan)
- iwl_sta_fill_lq(priv, ctx, i, &lq);
- else
- memcpy(&lq, priv->stations[i].lq,
- sizeof(struct iwl_link_quality_cmd));
-
- if (memcmp(&lq, &zero_lq, sizeof(lq)))
- send_lq = true;
- }
- spin_unlock_bh(&priv->sta_lock);
- ret = iwl_send_add_sta(priv, &sta_cmd, 0);
- if (ret) {
- spin_lock_bh(&priv->sta_lock);
- IWL_ERR(priv, "Adding station %pM failed.\n",
- priv->stations[i].sta.sta.addr);
- priv->stations[i].used &=
- ~IWL_STA_DRIVER_ACTIVE;
- priv->stations[i].used &=
- ~IWL_STA_UCODE_INPROGRESS;
- continue;
- }
- /*
- * Rate scaling has already been initialized, send
- * current LQ command
- */
- if (send_lq)
- iwl_send_lq_cmd(priv, ctx, &lq, 0, true);
- spin_lock_bh(&priv->sta_lock);
- priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
- }
- }
-
- spin_unlock_bh(&priv->sta_lock);
- if (!found)
- IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
- "no stations to be restored.\n");
- else
- IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
- "complete.\n");
-}
-
-int iwl_get_free_ucode_key_offset(struct iwl_priv *priv)
-{
- int i;
-
- for (i = 0; i < priv->sta_key_max_num; i++)
- if (!test_and_set_bit(i, &priv->ucode_key_table))
- return i;
-
- return WEP_INVALID_OFFSET;
-}
-
-void iwl_dealloc_bcast_stations(struct iwl_priv *priv)
-{
- int i;
-
- spin_lock_bh(&priv->sta_lock);
- for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
- if (!(priv->stations[i].used & IWL_STA_BCAST))
- continue;
-
- priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
- priv->num_stations--;
- if (WARN_ON(priv->num_stations < 0))
- priv->num_stations = 0;
- kfree(priv->stations[i].lq);
- priv->stations[i].lq = NULL;
- }
- spin_unlock_bh(&priv->sta_lock);
-}
-
-#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(priv, "lq station id 0x%x\n", lq->sta_id);
- IWL_DEBUG_RATE(priv, "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(priv, "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
-
-/**
- * is_lq_table_valid() - Test one aspect of LQ cmd for validity
- *
- * It sometimes happens when a HT rate has been in use and we
- * loose connectivity with AP then mac80211 will first tell us that the
- * current channel is not HT anymore before removing the station. In such a
- * scenario the RXON flags will be updated to indicate we are not
- * communicating HT anymore, but the LQ command may still contain HT rates.
- * Test for this to prevent driver from sending LQ command between the time
- * RXON flags are updated and when LQ command is updated.
- */
-static bool is_lq_table_valid(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct iwl_link_quality_cmd *lq)
-{
- int i;
-
- if (ctx->ht.enabled)
- return true;
-
- IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
- ctx->active.channel);
- for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
- if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
- RATE_MCS_HT_MSK) {
- IWL_DEBUG_INFO(priv,
- "index %d of LQ expects HT channel\n",
- i);
- return false;
- }
- }
- return true;
-}
-
-/**
- * iwl_send_lq_cmd() - Send link quality command
- * @init: This command is sent as part of station initialization right
- * after station has been added.
- *
- * The link quality command is sent as the last step of station creation.
- * This is the special case in which init is set and we call a callback in
- * this case to clear the state indicating that station creation is in
- * progress.
- */
-int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- struct iwl_link_quality_cmd *lq, u8 flags, bool init)
-{
- int ret = 0;
- struct iwl_host_cmd cmd = {
- .id = REPLY_TX_LINK_QUALITY_CMD,
- .len = { sizeof(struct iwl_link_quality_cmd), },
- .flags = flags,
- .data = { lq, },
- };
-
- if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
- return -EINVAL;
-
-
- spin_lock_bh(&priv->sta_lock);
- if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
- spin_unlock_bh(&priv->sta_lock);
- return -EINVAL;
- }
- spin_unlock_bh(&priv->sta_lock);
-
- iwl_dump_lq_cmd(priv, lq);
- if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
- return -EINVAL;
-
- if (is_lq_table_valid(priv, ctx, lq))
- ret = iwl_dvm_send_cmd(priv, &cmd);
- else
- ret = -EINVAL;
-
- if (cmd.flags & CMD_ASYNC)
- return ret;
-
- if (init) {
- IWL_DEBUG_INFO(priv, "init LQ command complete, "
- "clearing sta addition status for sta %d\n",
- lq->sta_id);
- spin_lock_bh(&priv->sta_lock);
- priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
- spin_unlock_bh(&priv->sta_lock);
- }
- return ret;
-}
-
-
-static struct iwl_link_quality_cmd *
-iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
- u8 sta_id)
-{
- struct iwl_link_quality_cmd *link_cmd;
-
- link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
- if (!link_cmd) {
- IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
- return NULL;
- }
-
- iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd);
-
- return link_cmd;
-}
-
-/*
- * iwlagn_add_bssid_station - Add the special IBSS BSSID station
- *
- * Function sleeps.
- */
-int iwlagn_add_bssid_station(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- const u8 *addr, u8 *sta_id_r)
-{
- int ret;
- u8 sta_id;
- struct iwl_link_quality_cmd *link_cmd;
-
- if (sta_id_r)
- *sta_id_r = IWL_INVALID_STATION;
-
- ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
- if (ret) {
- IWL_ERR(priv, "Unable to add station %pM\n", addr);
- return ret;
- }
-
- if (sta_id_r)
- *sta_id_r = sta_id;
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].used |= IWL_STA_LOCAL;
- spin_unlock_bh(&priv->sta_lock);
-
- /* Set up default rate scaling table in device's station table */
- link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
- if (!link_cmd) {
- IWL_ERR(priv,
- "Unable to initialize rate scaling for station %pM.\n",
- addr);
- return -ENOMEM;
- }
-
- ret = iwl_send_lq_cmd(priv, ctx, link_cmd, 0, true);
- if (ret)
- IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].lq = link_cmd;
- spin_unlock_bh(&priv->sta_lock);
-
- return 0;
-}
-
-/*
- * static WEP keys
- *
- * For each context, the device has a table of 4 static WEP keys
- * (one for each key index) that is updated with the following
- * commands.
- */
-
-static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- bool 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 = ctx->wep_key_cmd,
- .data = { wep_cmd, },
- };
-
- might_sleep();
-
- 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 (ctx->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 = ctx->wep_keys[i].key_size;
- memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
- ctx->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[0] = cmd_size;
-
- if (not_empty || send_if_empty)
- return iwl_dvm_send_cmd(priv, &cmd);
- else
- return 0;
-}
-
-int iwl_restore_default_wep_keys(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- lockdep_assert_held(&priv->mutex);
-
- return iwl_send_static_wepkey_cmd(priv, ctx, false);
-}
-
-int iwl_remove_default_wep_key(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_key_conf *keyconf)
-{
- int ret;
-
- lockdep_assert_held(&priv->mutex);
-
- IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
- keyconf->keyidx);
-
- memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
- if (iwl_is_rfkill(priv)) {
- IWL_DEBUG_WEP(priv,
- "Not sending REPLY_WEPKEY command due to RFKILL.\n");
- /* but keys in device are clear anyway so return success */
- return 0;
- }
- ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
- IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
- keyconf->keyidx, ret);
-
- return ret;
-}
-
-int iwl_set_default_wep_key(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_key_conf *keyconf)
-{
- int ret;
-
- lockdep_assert_held(&priv->mutex);
-
- if (keyconf->keylen != WEP_KEY_LEN_128 &&
- keyconf->keylen != WEP_KEY_LEN_64) {
- IWL_DEBUG_WEP(priv,
- "Bad WEP key length %d\n", keyconf->keylen);
- return -EINVAL;
- }
-
- keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT;
-
- ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
- memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
- keyconf->keylen);
-
- ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
- IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
- keyconf->keylen, keyconf->keyidx, ret);
-
- return ret;
-}
-
-/*
- * dynamic (per-station) keys
- *
- * The dynamic keys are a little more complicated. The device has
- * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys.
- * These are linked to stations by a table that contains an index
- * into the key table for each station/key index/{mcast,unicast},
- * i.e. it's basically an array of pointers like this:
- * key_offset_t key_mapping[NUM_STATIONS][4][2];
- * (it really works differently, but you can think of it as such)
- *
- * The key uploading and linking happens in the same command, the
- * add station command with STA_MODIFY_KEY_MASK.
- */
-
-static u8 iwlagn_key_sta_id(struct iwl_priv *priv,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
-
- if (sta)
- return iwl_sta_id(sta);
-
- /*
- * The device expects GTKs for station interfaces to be
- * installed as GTKs for the AP station. If we have no
- * station ID, then use the ap_sta_id in that case.
- */
- if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx)
- return vif_priv->ctx->ap_sta_id;
-
- return IWL_INVALID_STATION;
-}
-
-static int iwlagn_send_sta_key(struct iwl_priv *priv,
- struct ieee80211_key_conf *keyconf,
- u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
- u32 cmd_flags)
-{
- __le16 key_flags;
- struct iwl_addsta_cmd sta_cmd;
- int i;
-
- spin_lock_bh(&priv->sta_lock);
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
- spin_unlock_bh(&priv->sta_lock);
-
- key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
- key_flags |= STA_KEY_FLG_MAP_KEY_MSK;
-
- switch (keyconf->cipher) {
- case WLAN_CIPHER_SUITE_CCMP:
- key_flags |= STA_KEY_FLG_CCMP;
- memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- key_flags |= STA_KEY_FLG_TKIP;
- sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32;
- for (i = 0; i < 5; i++)
- sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
- memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
- break;
- case WLAN_CIPHER_SUITE_WEP104:
- key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
- /* fall through */
- case WLAN_CIPHER_SUITE_WEP40:
- key_flags |= STA_KEY_FLG_WEP;
- memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen);
- break;
- default:
- WARN_ON(1);
- return -EINVAL;
- }
-
- if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
- key_flags |= STA_KEY_MULTICAST_MSK;
-
- /* key pointer (offset) */
- sta_cmd.key.key_offset = keyconf->hw_key_idx;
-
- sta_cmd.key.key_flags = key_flags;
- sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
- sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
-
- return iwl_send_add_sta(priv, &sta_cmd, cmd_flags);
-}
-
-void iwl_update_tkip_key(struct iwl_priv *priv,
- struct ieee80211_vif *vif,
- struct ieee80211_key_conf *keyconf,
- struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
-{
- u8 sta_id = iwlagn_key_sta_id(priv, vif, sta);
-
- if (sta_id == IWL_INVALID_STATION)
- return;
-
- if (iwl_scan_cancel(priv)) {
- /* cancel scan failed, just live w/ bad key and rely
- briefly on SW decryption */
- return;
- }
-
- iwlagn_send_sta_key(priv, keyconf, sta_id,
- iv32, phase1key, CMD_ASYNC);
-}
-
-int iwl_remove_dynamic_key(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_key_conf *keyconf,
- struct ieee80211_sta *sta)
-{
- struct iwl_addsta_cmd sta_cmd;
- u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
- __le16 key_flags;
-
- /* if station isn't there, neither is the key */
- if (sta_id == IWL_INVALID_STATION)
- return -ENOENT;
-
- spin_lock_bh(&priv->sta_lock);
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
- if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE))
- sta_id = IWL_INVALID_STATION;
- spin_unlock_bh(&priv->sta_lock);
-
- if (sta_id == IWL_INVALID_STATION)
- return 0;
-
- lockdep_assert_held(&priv->mutex);
-
- ctx->key_mapping_keys--;
-
- IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
- keyconf->keyidx, sta_id);
-
- if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table))
- IWL_ERR(priv, "offset %d not used in uCode key table.\n",
- keyconf->hw_key_idx);
-
- key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
- key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC |
- STA_KEY_FLG_INVALID;
-
- if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
- key_flags |= STA_KEY_MULTICAST_MSK;
-
- sta_cmd.key.key_flags = key_flags;
- sta_cmd.key.key_offset = keyconf->hw_key_idx;
- sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
- sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
-
- return iwl_send_add_sta(priv, &sta_cmd, 0);
-}
-
-int iwl_set_dynamic_key(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx,
- struct ieee80211_key_conf *keyconf,
- struct ieee80211_sta *sta)
-{
- struct ieee80211_key_seq seq;
- u16 p1k[5];
- int ret;
- u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
- const u8 *addr;
-
- if (sta_id == IWL_INVALID_STATION)
- return -EINVAL;
-
- lockdep_assert_held(&priv->mutex);
-
- keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv);
- if (keyconf->hw_key_idx == WEP_INVALID_OFFSET)
- return -ENOSPC;
-
- ctx->key_mapping_keys++;
-
- switch (keyconf->cipher) {
- case WLAN_CIPHER_SUITE_TKIP:
- if (sta)
- addr = sta->addr;
- else /* station mode case only */
- addr = ctx->active.bssid_addr;
-
- /* pre-fill phase 1 key into device cache */
- ieee80211_get_key_rx_seq(keyconf, 0, &seq);
- ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
- ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
- seq.tkip.iv32, p1k, 0);
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
- 0, NULL, 0);
- break;
- default:
- IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher);
- ret = -EINVAL;
- }
-
- if (ret) {
- ctx->key_mapping_keys--;
- clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table);
- }
-
- IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
- keyconf->cipher, keyconf->keylen, keyconf->keyidx,
- sta ? sta->addr : NULL, ret);
-
- return ret;
-}
-
-/**
- * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
- *
- * This adds the broadcast station into the driver's station table
- * and marks it driver active, so that it will be restored to the
- * device at the next best time.
- */
-int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- struct iwl_link_quality_cmd *link_cmd;
- u8 sta_id;
-
- spin_lock_bh(&priv->sta_lock);
- sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
- if (sta_id == IWL_INVALID_STATION) {
- IWL_ERR(priv, "Unable to prepare broadcast station\n");
- spin_unlock_bh(&priv->sta_lock);
-
- return -EINVAL;
- }
-
- priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
- priv->stations[sta_id].used |= IWL_STA_BCAST;
- spin_unlock_bh(&priv->sta_lock);
-
- link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
- if (!link_cmd) {
- IWL_ERR(priv,
- "Unable to initialize rate scaling for bcast station.\n");
- return -ENOMEM;
- }
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].lq = link_cmd;
- spin_unlock_bh(&priv->sta_lock);
-
- return 0;
-}
-
-/**
- * iwl_update_bcast_station - update broadcast station's LQ command
- *
- * Only used by iwlagn. Placed here to have all bcast station management
- * code together.
- */
-int iwl_update_bcast_station(struct iwl_priv *priv,
- struct iwl_rxon_context *ctx)
-{
- struct iwl_link_quality_cmd *link_cmd;
- u8 sta_id = ctx->bcast_sta_id;
-
- link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
- if (!link_cmd) {
- IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
- return -ENOMEM;
- }
-
- spin_lock_bh(&priv->sta_lock);
- if (priv->stations[sta_id].lq)
- kfree(priv->stations[sta_id].lq);
- else
- IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
- priv->stations[sta_id].lq = link_cmd;
- spin_unlock_bh(&priv->sta_lock);
-
- return 0;
-}
-
-int iwl_update_bcast_stations(struct iwl_priv *priv)
-{
- struct iwl_rxon_context *ctx;
- int ret = 0;
-
- for_each_context(priv, ctx) {
- ret = iwl_update_bcast_station(priv, ctx);
- if (ret)
- break;
- }
-
- return ret;
-}
-
-/**
- * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
- */
-int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
-{
- struct iwl_addsta_cmd sta_cmd;
-
- lockdep_assert_held(&priv->mutex);
-
- /* Remove "disable" flag, to enable Tx for this TID */
- spin_lock_bh(&priv->sta_lock);
- 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;
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
- spin_unlock_bh(&priv->sta_lock);
-
- return iwl_send_add_sta(priv, &sta_cmd, 0);
-}
-
-int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
- int tid, u16 ssn)
-{
- int sta_id;
- struct iwl_addsta_cmd sta_cmd;
-
- lockdep_assert_held(&priv->mutex);
-
- sta_id = iwl_sta_id(sta);
- if (sta_id == IWL_INVALID_STATION)
- return -ENXIO;
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].sta.station_flags_msk = 0;
- priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
- priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
- priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
- priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
- spin_unlock_bh(&priv->sta_lock);
-
- return iwl_send_add_sta(priv, &sta_cmd, 0);
-}
-
-int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
- int tid)
-{
- int sta_id;
- struct iwl_addsta_cmd sta_cmd;
-
- lockdep_assert_held(&priv->mutex);
-
- sta_id = iwl_sta_id(sta);
- if (sta_id == IWL_INVALID_STATION) {
- IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
- return -ENXIO;
- }
-
- spin_lock_bh(&priv->sta_lock);
- priv->stations[sta_id].sta.station_flags_msk = 0;
- priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
- priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
- priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
- memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
- spin_unlock_bh(&priv->sta_lock);
-
- return iwl_send_add_sta(priv, &sta_cmd, 0);
-}
-
-
-
-void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
-{
- struct iwl_addsta_cmd cmd = {
- .mode = STA_CONTROL_MODIFY_MSK,
- .station_flags = STA_FLG_PWR_SAVE_MSK,
- .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
- .sta.sta_id = sta_id,
- .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK,
- .sleep_tx_count = cpu_to_le16(cnt),
- };
-
- iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
-}
projects / cascardo / linux.git / blobdiff