forked from Minki/linux
e666674eec
Key management can use sync commands instead of asynchronous ones to have better error checking. Also add checks that the commands all should have the mutex held. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
1407 lines
40 KiB
C
1407 lines
40 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 void 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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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;
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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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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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}
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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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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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*/
|
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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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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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spin_lock_irqsave(&priv->sta_lock, flags);
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priv->stations[sta_id].used |= IWL_STA_LOCAL;
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spin_unlock_irqrestore(&priv->sta_lock, flags);
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if (init_rs) {
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/* Set up default rate scaling table in device's station table */
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link_cmd = iwl_sta_alloc_lq(priv, sta_id);
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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);
|
|
|
|
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);
|