forked from Minki/linux
278c2f6faa
The rate table in the bcast LQ is computed only when the station is allocated, and chooses the lowest rate for the band. Because of when this occurs, this is the 2.4 GHz band and uses the 0x420a (CCK, 1 Mbps) rate. In 5 GHz beaconing mode, this rate will prevent beacons from being sent and any other packets from being received. We can fix this by re-initializing the bcast station's LQ command when the channel is changed. Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
1441 lines
41 KiB
C
1441 lines
41 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <net/mac80211.h>
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#include <linux/etherdevice.h>
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#include <linux/sched.h>
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#include <linux/lockdep.h>
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-sta.h"
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/* priv->sta_lock must be held */
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static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
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{
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if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
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IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
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sta_id, priv->stations[sta_id].sta.sta.addr);
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if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
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IWL_DEBUG_ASSOC(priv,
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"STA id %u addr %pM already present in uCode (according to driver)\n",
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sta_id, priv->stations[sta_id].sta.sta.addr);
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} else {
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priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
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IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
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sta_id, priv->stations[sta_id].sta.sta.addr);
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}
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}
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static int iwl_process_add_sta_resp(struct iwl_priv *priv,
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struct iwl_addsta_cmd *addsta,
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struct iwl_rx_packet *pkt,
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bool sync)
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{
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u8 sta_id = addsta->sta.sta_id;
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unsigned long flags;
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int ret = -EIO;
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if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
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pkt->hdr.flags);
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return ret;
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}
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IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
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sta_id);
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spin_lock_irqsave(&priv->sta_lock, flags);
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switch (pkt->u.add_sta.status) {
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case ADD_STA_SUCCESS_MSK:
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IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
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iwl_sta_ucode_activate(priv, sta_id);
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ret = 0;
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break;
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case ADD_STA_NO_ROOM_IN_TABLE:
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IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
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sta_id);
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break;
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case ADD_STA_NO_BLOCK_ACK_RESOURCE:
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IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
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sta_id);
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break;
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case ADD_STA_MODIFY_NON_EXIST_STA:
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IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
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sta_id);
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break;
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default:
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IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
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pkt->u.add_sta.status);
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break;
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}
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IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
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priv->stations[sta_id].sta.mode ==
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STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
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sta_id, priv->stations[sta_id].sta.sta.addr);
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/*
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* XXX: The MAC address in the command buffer is often changed from
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* the original sent to the device. That is, the MAC address
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* written to the command buffer often is not the same MAC adress
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* read from the command buffer when the command returns. This
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* issue has not yet been resolved and this debugging is left to
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* observe the problem.
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*/
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IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
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priv->stations[sta_id].sta.mode ==
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STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
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addsta->sta.addr);
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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return ret;
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}
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static void iwl_add_sta_callback(struct iwl_priv *priv,
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struct iwl_device_cmd *cmd,
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struct iwl_rx_packet *pkt)
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{
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struct iwl_addsta_cmd *addsta =
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(struct iwl_addsta_cmd *)cmd->cmd.payload;
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iwl_process_add_sta_resp(priv, addsta, pkt, false);
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}
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int iwl_send_add_sta(struct iwl_priv *priv,
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struct iwl_addsta_cmd *sta, u8 flags)
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{
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struct iwl_rx_packet *pkt = NULL;
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int ret = 0;
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u8 data[sizeof(*sta)];
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struct iwl_host_cmd cmd = {
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.id = REPLY_ADD_STA,
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.flags = flags,
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.data = data,
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};
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u8 sta_id __maybe_unused = sta->sta.sta_id;
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IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
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sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
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if (flags & CMD_ASYNC)
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cmd.callback = iwl_add_sta_callback;
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else {
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cmd.flags |= CMD_WANT_SKB;
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might_sleep();
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}
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cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
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ret = iwl_send_cmd(priv, &cmd);
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if (ret || (flags & CMD_ASYNC))
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return ret;
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if (ret == 0) {
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pkt = (struct iwl_rx_packet *)cmd.reply_page;
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ret = iwl_process_add_sta_resp(priv, sta, pkt, true);
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}
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iwl_free_pages(priv, cmd.reply_page);
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return ret;
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}
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EXPORT_SYMBOL(iwl_send_add_sta);
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static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
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struct ieee80211_sta_ht_cap *sta_ht_inf)
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{
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__le32 sta_flags;
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u8 mimo_ps_mode;
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if (!sta_ht_inf || !sta_ht_inf->ht_supported)
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goto done;
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mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
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IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
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(mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
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"static" :
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(mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
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"dynamic" : "disabled");
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sta_flags = priv->stations[index].sta.station_flags;
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sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
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switch (mimo_ps_mode) {
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case WLAN_HT_CAP_SM_PS_STATIC:
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sta_flags |= STA_FLG_MIMO_DIS_MSK;
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break;
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case WLAN_HT_CAP_SM_PS_DYNAMIC:
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sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
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break;
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case WLAN_HT_CAP_SM_PS_DISABLED:
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break;
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default:
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IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
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break;
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}
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sta_flags |= cpu_to_le32(
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(u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
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sta_flags |= cpu_to_le32(
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(u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
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if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
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sta_flags |= STA_FLG_HT40_EN_MSK;
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else
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sta_flags &= ~STA_FLG_HT40_EN_MSK;
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priv->stations[index].sta.station_flags = sta_flags;
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done:
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return;
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}
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/**
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* iwl_prep_station - Prepare station information for addition
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*
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* should be called with sta_lock held
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*/
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static u8 iwl_prep_station(struct iwl_priv *priv, const u8 *addr,
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bool is_ap,
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struct ieee80211_sta_ht_cap *ht_info)
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{
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struct iwl_station_entry *station;
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int i;
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u8 sta_id = IWL_INVALID_STATION;
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u16 rate;
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if (is_ap)
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sta_id = IWL_AP_ID;
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else if (is_broadcast_ether_addr(addr))
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sta_id = priv->hw_params.bcast_sta_id;
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else
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for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
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if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
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addr)) {
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sta_id = i;
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break;
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}
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if (!priv->stations[i].used &&
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sta_id == IWL_INVALID_STATION)
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sta_id = i;
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}
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/*
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* These two conditions have the same outcome, but keep them
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* separate
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*/
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if (unlikely(sta_id == IWL_INVALID_STATION))
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return sta_id;
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/*
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* uCode is not able to deal with multiple requests to add a
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* station. Keep track if one is in progress so that we do not send
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* another.
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*/
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if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
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IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
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sta_id);
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return sta_id;
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}
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if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
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(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
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!compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
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IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
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sta_id, addr);
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return sta_id;
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}
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station = &priv->stations[sta_id];
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station->used = IWL_STA_DRIVER_ACTIVE;
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IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
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sta_id, addr);
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priv->num_stations++;
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/* Set up the REPLY_ADD_STA command to send to device */
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memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
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memcpy(station->sta.sta.addr, addr, ETH_ALEN);
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station->sta.mode = 0;
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station->sta.sta.sta_id = sta_id;
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station->sta.station_flags = 0;
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/*
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* OK to call unconditionally, since local stations (IBSS BSSID
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* STA and broadcast STA) pass in a NULL ht_info, and mac80211
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* doesn't allow HT IBSS.
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*/
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iwl_set_ht_add_station(priv, sta_id, ht_info);
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/* 3945 only */
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rate = (priv->band == IEEE80211_BAND_5GHZ) ?
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IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
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/* Turn on both antennas for the station... */
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station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
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return sta_id;
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}
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#define STA_WAIT_TIMEOUT (HZ/2)
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/**
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* iwl_add_station_common -
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*/
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int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
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bool is_ap,
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struct ieee80211_sta_ht_cap *ht_info,
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u8 *sta_id_r)
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{
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unsigned long flags_spin;
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int ret = 0;
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u8 sta_id;
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struct iwl_addsta_cmd sta_cmd;
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*sta_id_r = 0;
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spin_lock_irqsave(&priv->sta_lock, flags_spin);
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sta_id = iwl_prep_station(priv, addr, is_ap, ht_info);
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if (sta_id == IWL_INVALID_STATION) {
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IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
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addr);
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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return -EINVAL;
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}
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/*
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* uCode is not able to deal with multiple requests to add a
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* station. Keep track if one is in progress so that we do not send
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* another.
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*/
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if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
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IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
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sta_id);
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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return -EEXIST;
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}
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if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
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(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
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IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
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sta_id, addr);
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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return -EEXIST;
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}
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priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
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memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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/* Add station to device's station table */
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ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
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if (ret) {
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spin_lock_irqsave(&priv->sta_lock, flags_spin);
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IWL_ERR(priv, "Adding station %pM failed.\n",
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priv->stations[sta_id].sta.sta.addr);
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priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
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priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
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spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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}
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*sta_id_r = sta_id;
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return ret;
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}
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EXPORT_SYMBOL(iwl_add_station_common);
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static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
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u8 sta_id)
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{
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int i, r;
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struct iwl_link_quality_cmd *link_cmd;
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u32 rate_flags;
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link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
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if (!link_cmd) {
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IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
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return NULL;
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}
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/* Set up the rate scaling to start at selected rate, fall back
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* all the way down to 1M in IEEE order, and then spin on 1M */
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if (priv->band == IEEE80211_BAND_5GHZ)
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r = IWL_RATE_6M_INDEX;
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else
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r = IWL_RATE_1M_INDEX;
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for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
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rate_flags = 0;
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if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
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rate_flags |= RATE_MCS_CCK_MSK;
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rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
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RATE_MCS_ANT_POS;
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link_cmd->rs_table[i].rate_n_flags =
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iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
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r = iwl_get_prev_ieee_rate(r);
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}
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link_cmd->general_params.single_stream_ant_msk =
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first_antenna(priv->hw_params.valid_tx_ant);
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link_cmd->general_params.dual_stream_ant_msk =
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priv->hw_params.valid_tx_ant &
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~first_antenna(priv->hw_params.valid_tx_ant);
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if (!link_cmd->general_params.dual_stream_ant_msk) {
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link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
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} else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
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link_cmd->general_params.dual_stream_ant_msk =
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priv->hw_params.valid_tx_ant;
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}
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link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
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link_cmd->agg_params.agg_time_limit =
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cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
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link_cmd->sta_id = sta_id;
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return link_cmd;
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}
|
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|
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/*
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* iwl_add_bssid_station - Add the special IBSS BSSID station
|
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*
|
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* Function sleeps.
|
|
*/
|
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int iwl_add_bssid_station(struct iwl_priv *priv, const u8 *addr, bool init_rs,
|
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u8 *sta_id_r)
|
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{
|
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int ret;
|
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u8 sta_id;
|
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struct iwl_link_quality_cmd *link_cmd;
|
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unsigned long flags;
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|
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if (sta_id_r)
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*sta_id_r = IWL_INVALID_STATION;
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ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
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if (ret) {
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IWL_ERR(priv, "Unable to add station %pM\n", addr);
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return ret;
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}
|
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|
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if (sta_id_r)
|
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*sta_id_r = sta_id;
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|
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spin_lock_irqsave(&priv->sta_lock, flags);
|
|
priv->stations[sta_id].used |= IWL_STA_LOCAL;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
if (init_rs) {
|
|
/* Set up default rate scaling table in device's station table */
|
|
link_cmd = iwl_sta_alloc_lq(priv, 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, link_cmd, CMD_SYNC, true);
|
|
if (ret)
|
|
IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
priv->stations[sta_id].lq = link_cmd;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(iwl_add_bssid_station);
|
|
|
|
/**
|
|
* iwl_sta_ucode_deactivate - deactivate ucode status for a station
|
|
*
|
|
* priv->sta_lock must be held
|
|
*/
|
|
static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
|
|
{
|
|
/* 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)
|
|
{
|
|
struct iwl_rx_packet *pkt;
|
|
int ret;
|
|
|
|
unsigned long flags_spin;
|
|
struct iwl_rem_sta_cmd rm_sta_cmd;
|
|
|
|
struct iwl_host_cmd cmd = {
|
|
.id = REPLY_REMOVE_STA,
|
|
.len = sizeof(struct iwl_rem_sta_cmd),
|
|
.flags = CMD_SYNC,
|
|
.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_send_cmd(priv, &cmd);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
pkt = (struct iwl_rx_packet *)cmd.reply_page;
|
|
if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
|
|
IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
|
|
pkt->hdr.flags);
|
|
ret = -EIO;
|
|
}
|
|
|
|
if (!ret) {
|
|
switch (pkt->u.rem_sta.status) {
|
|
case REM_STA_SUCCESS_MSK:
|
|
spin_lock_irqsave(&priv->sta_lock, flags_spin);
|
|
iwl_sta_ucode_deactivate(priv, sta_id);
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
|
|
break;
|
|
default:
|
|
ret = -EIO;
|
|
IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
|
|
break;
|
|
}
|
|
}
|
|
iwl_free_pages(priv, cmd.reply_page);
|
|
|
|
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)
|
|
{
|
|
unsigned long flags;
|
|
|
|
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_irqsave(&priv->sta_lock, flags);
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
|
|
return iwl_send_remove_station(priv, addr, sta_id);
|
|
out_err:
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iwl_remove_station);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
int i;
|
|
unsigned long flags_spin;
|
|
bool cleared = false;
|
|
|
|
IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags_spin);
|
|
for (i = 0; i < priv->hw_params.max_stations; i++) {
|
|
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_irqrestore(&priv->sta_lock, flags_spin);
|
|
|
|
if (!cleared)
|
|
IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
|
|
}
|
|
EXPORT_SYMBOL(iwl_clear_ucode_stations);
|
|
|
|
/**
|
|
* 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_addsta_cmd sta_cmd;
|
|
struct iwl_link_quality_cmd lq;
|
|
unsigned long flags_spin;
|
|
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_irqsave(&priv->sta_lock, flags_spin);
|
|
for (i = 0; i < priv->hw_params.max_stations; i++) {
|
|
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 < priv->hw_params.max_stations; 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) {
|
|
memcpy(&lq, priv->stations[i].lq,
|
|
sizeof(struct iwl_link_quality_cmd));
|
|
send_lq = true;
|
|
}
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
if (ret) {
|
|
spin_lock_irqsave(&priv->sta_lock, flags_spin);
|
|
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;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
}
|
|
/*
|
|
* Rate scaling has already been initialized, send
|
|
* current LQ command
|
|
*/
|
|
if (send_lq)
|
|
iwl_send_lq_cmd(priv, &lq, CMD_SYNC, true);
|
|
spin_lock_irqsave(&priv->sta_lock, flags_spin);
|
|
priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
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");
|
|
}
|
|
EXPORT_SYMBOL(iwl_restore_stations);
|
|
|
|
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 WEP_INVALID_OFFSET;
|
|
}
|
|
EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
|
|
|
|
static 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,
|
|
.flags = CMD_SYNC,
|
|
};
|
|
|
|
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 (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;
|
|
}
|
|
|
|
int iwl_restore_default_wep_keys(struct iwl_priv *priv)
|
|
{
|
|
WARN_ON(!mutex_is_locked(&priv->mutex));
|
|
|
|
return iwl_send_static_wepkey_cmd(priv, 0);
|
|
}
|
|
EXPORT_SYMBOL(iwl_restore_default_wep_keys);
|
|
|
|
int iwl_remove_default_wep_key(struct iwl_priv *priv,
|
|
struct ieee80211_key_conf *keyconf)
|
|
{
|
|
int ret;
|
|
|
|
WARN_ON(!mutex_is_locked(&priv->mutex));
|
|
|
|
IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
|
|
keyconf->keyidx);
|
|
|
|
memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->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, 1);
|
|
IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
|
|
keyconf->keyidx, ret);
|
|
|
|
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;
|
|
|
|
WARN_ON(!mutex_is_locked(&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->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
|
|
keyconf->hw_key_idx = HW_KEY_DEFAULT;
|
|
priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
|
|
|
|
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(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
|
|
keyconf->keylen, keyconf->keyidx, ret);
|
|
|
|
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;
|
|
struct iwl_addsta_cmd sta_cmd;
|
|
|
|
lockdep_assert_held(&priv->mutex);
|
|
|
|
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. */
|
|
|
|
WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
|
|
"no space for a new key");
|
|
|
|
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;
|
|
|
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
|
|
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;
|
|
struct iwl_addsta_cmd sta_cmd;
|
|
|
|
lockdep_assert_held(&priv->mutex);
|
|
|
|
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. */
|
|
|
|
WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
|
|
"no space for a new key");
|
|
|
|
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;
|
|
|
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
|
|
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;
|
|
__le16 key_flags = 0;
|
|
|
|
key_flags |= (STA_KEY_FLG_TKIP | 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;
|
|
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. */
|
|
|
|
WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
|
|
"no space for a new key");
|
|
|
|
priv->stations[sta_id].sta.key.key_flags = key_flags;
|
|
|
|
|
|
/* 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;
|
|
}
|
|
|
|
void iwl_update_tkip_key(struct iwl_priv *priv,
|
|
struct ieee80211_key_conf *keyconf,
|
|
struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
|
|
{
|
|
u8 sta_id;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
if (iwl_scan_cancel(priv)) {
|
|
/* cancel scan failed, just live w/ bad key and rely
|
|
briefly on SW decryption */
|
|
return;
|
|
}
|
|
|
|
sta_id = iwl_sta_id_or_broadcast(priv, sta);
|
|
if (sta_id == IWL_INVALID_STATION)
|
|
return;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
|
|
priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
|
|
|
|
for (i = 0; i < 5; i++)
|
|
priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
|
|
cpu_to_le16(phase1key[i]);
|
|
|
|
priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
|
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
|
|
|
|
iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
|
|
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
}
|
|
EXPORT_SYMBOL(iwl_update_tkip_key);
|
|
|
|
int iwl_remove_dynamic_key(struct iwl_priv *priv,
|
|
struct ieee80211_key_conf *keyconf,
|
|
u8 sta_id)
|
|
{
|
|
unsigned long flags;
|
|
u16 key_flags;
|
|
u8 keyidx;
|
|
struct iwl_addsta_cmd sta_cmd;
|
|
|
|
lockdep_assert_held(&priv->mutex);
|
|
|
|
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(priv, "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 (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
|
|
IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
|
|
keyconf->keyidx, key_flags);
|
|
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_ERR(priv, "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;
|
|
|
|
if (iwl_is_rfkill(priv)) {
|
|
IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
return 0;
|
|
}
|
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
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;
|
|
|
|
lockdep_assert_held(&priv->mutex);
|
|
|
|
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_ERR(priv,
|
|
"Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
IWL_DEBUG_WEP(priv, "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(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_link_quality_cmd *lq)
|
|
{
|
|
int i;
|
|
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
|
|
|
|
if (ht_conf->is_ht)
|
|
return true;
|
|
|
|
IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
|
|
priv->active_rxon.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_link_quality_cmd *lq, u8 flags, bool init)
|
|
{
|
|
int ret = 0;
|
|
unsigned long flags_spin;
|
|
|
|
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;
|
|
|
|
iwl_dump_lq_cmd(priv, lq);
|
|
BUG_ON(init && (cmd.flags & CMD_ASYNC));
|
|
|
|
if (is_lq_table_valid(priv, lq))
|
|
ret = iwl_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_irqsave(&priv->sta_lock, flags_spin);
|
|
priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwl_send_lq_cmd);
|
|
|
|
/**
|
|
* iwl_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 iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq)
|
|
{
|
|
struct iwl_link_quality_cmd *link_cmd;
|
|
unsigned long flags;
|
|
u8 sta_id;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
sta_id = iwl_prep_station(priv, iwl_bcast_addr, false, NULL);
|
|
if (sta_id == IWL_INVALID_STATION) {
|
|
IWL_ERR(priv, "Unable to prepare broadcast station\n");
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
|
|
priv->stations[sta_id].used |= IWL_STA_BCAST;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
if (init_lq) {
|
|
link_cmd = iwl_sta_alloc_lq(priv, sta_id);
|
|
if (!link_cmd) {
|
|
IWL_ERR(priv,
|
|
"Unable to initialize rate scaling for bcast station.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
priv->stations[sta_id].lq = link_cmd;
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
unsigned long flags;
|
|
struct iwl_link_quality_cmd *link_cmd;
|
|
u8 sta_id = priv->hw_params.bcast_sta_id;
|
|
|
|
link_cmd = iwl_sta_alloc_lq(priv, sta_id);
|
|
if (!link_cmd) {
|
|
IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
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_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(iwl_update_bcast_station);
|
|
|
|
void iwl_dealloc_bcast_station(struct iwl_priv *priv)
|
|
{
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
for (i = 0; i < priv->hw_params.max_stations; i++) {
|
|
if (!(priv->stations[i].used & IWL_STA_BCAST))
|
|
continue;
|
|
|
|
priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
|
|
priv->num_stations--;
|
|
BUG_ON(priv->num_stations < 0);
|
|
kfree(priv->stations[i].lq);
|
|
priv->stations[i].lq = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_station);
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
unsigned long flags;
|
|
struct iwl_addsta_cmd sta_cmd;
|
|
|
|
lockdep_assert_held(&priv->mutex);
|
|
|
|
/* 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;
|
|
memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
|
|
|
|
int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
|
|
int tid, u16 ssn)
|
|
{
|
|
unsigned long flags;
|
|
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_irqsave(&priv->sta_lock, flags);
|
|
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_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
EXPORT_SYMBOL(iwl_sta_rx_agg_start);
|
|
|
|
int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
|
|
int tid)
|
|
{
|
|
unsigned long flags;
|
|
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_irqsave(&priv->sta_lock, flags);
|
|
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_irqrestore(&priv->sta_lock, flags);
|
|
|
|
return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
|
|
}
|
|
EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
|
|
|
|
void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
|
|
priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
|
|
priv->stations[sta_id].sta.sta.modify_mask = 0;
|
|
priv->stations[sta_id].sta.sleep_tx_count = 0;
|
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
|
|
iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
}
|
|
EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
|
|
|
|
void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&priv->sta_lock, flags);
|
|
priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
|
|
priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
|
|
priv->stations[sta_id].sta.sta.modify_mask =
|
|
STA_MODIFY_SLEEP_TX_COUNT_MSK;
|
|
priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
|
|
priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
|
|
iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
|
|
spin_unlock_irqrestore(&priv->sta_lock, flags);
|
|
|
|
}
|
|
EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
|
|
|
|
int iwl_mac_sta_remove(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
struct iwl_priv *priv = hw->priv;
|
|
struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv;
|
|
int ret;
|
|
|
|
IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
|
|
sta->addr);
|
|
mutex_lock(&priv->mutex);
|
|
IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
|
|
sta->addr);
|
|
ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr);
|
|
if (ret)
|
|
IWL_ERR(priv, "Error removing station %pM\n",
|
|
sta->addr);
|
|
mutex_unlock(&priv->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(iwl_mac_sta_remove);
|