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@@ -1,817 +0,0 @@
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-/******************************************************************************
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- *
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- * Copyright(c) 2003 - 2011 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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-
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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 <linux/export.h>
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-
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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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-
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-/* il->sta_lock must be held */
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-static void il_sta_ucode_activate(struct il_priv *il, u8 sta_id)
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-{
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-
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- if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE))
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- IL_ERR(
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- "ACTIVATE a non DRIVER active station id %u addr %pM\n",
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- sta_id, il->stations[sta_id].sta.sta.addr);
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-
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- if (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) {
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- D_ASSOC(
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- "STA id %u addr %pM already present"
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- " in uCode (according to driver)\n",
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- sta_id, il->stations[sta_id].sta.sta.addr);
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- } else {
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- il->stations[sta_id].used |= IL_STA_UCODE_ACTIVE;
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- D_ASSOC("Added STA id %u addr %pM to uCode\n",
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- sta_id, il->stations[sta_id].sta.sta.addr);
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- }
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-}
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-
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-static int il_process_add_sta_resp(struct il_priv *il,
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- struct il_addsta_cmd *addsta,
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- struct il_rx_pkt *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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-
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- if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
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- IL_ERR("Bad return from C_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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-
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- D_INFO("Processing response for adding station %u\n",
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- sta_id);
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-
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- spin_lock_irqsave(&il->sta_lock, flags);
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-
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- switch (pkt->u.add_sta.status) {
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- case ADD_STA_SUCCESS_MSK:
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- D_INFO("C_ADD_STA PASSED\n");
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- il_sta_ucode_activate(il, sta_id);
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- ret = 0;
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- break;
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- case ADD_STA_NO_ROOM_IN_TBL:
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- IL_ERR("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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- IL_ERR(
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- "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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- IL_ERR("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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- D_ASSOC("Received C_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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-
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- D_INFO("%s station id %u addr %pM\n",
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- il->stations[sta_id].sta.mode ==
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- STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
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- sta_id, il->stations[sta_id].sta.sta.addr);
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-
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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 address
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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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- D_INFO("%s station according to cmd buffer %pM\n",
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- il->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(&il->sta_lock, flags);
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-
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- return ret;
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-}
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-
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-static void il_add_sta_callback(struct il_priv *il,
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- struct il_device_cmd *cmd,
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- struct il_rx_pkt *pkt)
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-{
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- struct il_addsta_cmd *addsta =
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- (struct il_addsta_cmd *)cmd->cmd.payload;
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-
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- il_process_add_sta_resp(il, addsta, pkt, false);
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-
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-}
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-
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-int il_send_add_sta(struct il_priv *il,
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- struct il_addsta_cmd *sta, u8 flags)
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-{
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- struct il_rx_pkt *pkt = NULL;
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- int ret = 0;
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- u8 data[sizeof(*sta)];
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- struct il_host_cmd cmd = {
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- .id = C_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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-
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- D_INFO("Adding sta %u (%pM) %ssynchronously\n",
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- sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
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-
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- if (flags & CMD_ASYNC)
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- cmd.callback = il_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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-
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- cmd.len = il->cfg->ops->utils->build_addsta_hcmd(sta, data);
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- ret = il_send_cmd(il, &cmd);
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-
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- if (ret || (flags & CMD_ASYNC))
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- return ret;
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-
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- if (ret == 0) {
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- pkt = (struct il_rx_pkt *)cmd.reply_page;
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- ret = il_process_add_sta_resp(il, sta, pkt, true);
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- }
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- il_free_pages(il, cmd.reply_page);
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-
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- return ret;
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-}
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-EXPORT_SYMBOL(il_send_add_sta);
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-
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-static void il_set_ht_add_station(struct il_priv *il, u8 idx,
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- struct ieee80211_sta *sta,
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- struct il_rxon_context *ctx)
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-{
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- struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
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- __le32 sta_flags;
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- u8 mimo_ps_mode;
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-
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- if (!sta || !sta_ht_inf->ht_supported)
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- goto done;
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-
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- mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
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- D_ASSOC("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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-
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- sta_flags = il->stations[idx].sta.station_flags;
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-
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- sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
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-
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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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- IL_WARN("Invalid MIMO PS mode %d\n", mimo_ps_mode);
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- break;
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- }
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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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-
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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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-
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- if (il_is_ht40_tx_allowed(il, ctx, &sta->ht_cap))
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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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-
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- il->stations[idx].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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-/**
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- * il_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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-u8 il_prep_station(struct il_priv *il, struct il_rxon_context *ctx,
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- const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
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-{
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- struct il_station_entry *station;
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- int i;
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- u8 sta_id = IL_INVALID_STATION;
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- u16 rate;
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-
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- if (is_ap)
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- sta_id = ctx->ap_sta_id;
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- else if (is_broadcast_ether_addr(addr))
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- sta_id = ctx->bcast_sta_id;
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- else
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- for (i = IL_STA_ID; i < il->hw_params.max_stations; i++) {
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- if (!compare_ether_addr(il->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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-
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- if (!il->stations[i].used &&
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- sta_id == IL_INVALID_STATION)
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- sta_id = i;
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- }
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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 == IL_INVALID_STATION))
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- return sta_id;
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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 (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
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- D_INFO(
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- "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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-
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- if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
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- (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE) &&
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- !compare_ether_addr(il->stations[sta_id].sta.sta.addr, addr)) {
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- D_ASSOC(
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- "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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-
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- station = &il->stations[sta_id];
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- station->used = IL_STA_DRIVER_ACTIVE;
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- D_ASSOC("Add STA to driver ID %d: %pM\n",
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- sta_id, addr);
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- il->num_stations++;
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-
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- /* Set up the C_ADD_STA command to send to device */
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- memset(&station->sta, 0, sizeof(struct il_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 = ctx->station_flags;
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- station->ctxid = ctx->ctxid;
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-
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- if (sta) {
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- struct il_station_priv_common *sta_priv;
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-
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- sta_priv = (void *)sta->drv_priv;
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- sta_priv->ctx = ctx;
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- }
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-
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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 sta, and mac80211
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- * doesn't allow HT IBSS.
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- */
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- il_set_ht_add_station(il, sta_id, sta, ctx);
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-
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- /* 3945 only */
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- rate = (il->band == IEEE80211_BAND_5GHZ) ?
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- RATE_6M_PLCP : 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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-
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- return sta_id;
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-
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-}
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-EXPORT_SYMBOL_GPL(il_prep_station);
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-
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-#define STA_WAIT_TIMEOUT (HZ/2)
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-
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-/**
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- * il_add_station_common -
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- */
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-int
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-il_add_station_common(struct il_priv *il,
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- struct il_rxon_context *ctx,
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- const u8 *addr, bool is_ap,
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- struct ieee80211_sta *sta, 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 il_addsta_cmd sta_cmd;
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-
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|
|
- *sta_id_r = 0;
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- sta_id = il_prep_station(il, ctx, addr, is_ap, sta);
|
|
|
|
- if (sta_id == IL_INVALID_STATION) {
|
|
|
|
- IL_ERR("Unable to prepare station %pM for addition\n",
|
|
|
|
- addr);
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- return -EINVAL;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- /*
|
|
|
|
- * uCode is not able to deal with multiple requests to add a
|
|
|
|
- * station. Keep track if one is in progress so that we do not send
|
|
|
|
- * another.
|
|
|
|
- */
|
|
|
|
- if (il->stations[sta_id].used & IL_STA_UCODE_INPROGRESS) {
|
|
|
|
- D_INFO(
|
|
|
|
- "STA %d already in process of being added.\n",
|
|
|
|
- sta_id);
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- return -EEXIST;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if ((il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE) &&
|
|
|
|
- (il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
|
|
|
|
- D_ASSOC(
|
|
|
|
- "STA %d (%pM) already added, not adding again.\n",
|
|
|
|
- sta_id, addr);
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- return -EEXIST;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- il->stations[sta_id].used |= IL_STA_UCODE_INPROGRESS;
|
|
|
|
- memcpy(&sta_cmd, &il->stations[sta_id].sta,
|
|
|
|
- sizeof(struct il_addsta_cmd));
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
-
|
|
|
|
- /* Add station to device's station table */
|
|
|
|
- ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
|
|
|
|
- if (ret) {
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- IL_ERR("Adding station %pM failed.\n",
|
|
|
|
- il->stations[sta_id].sta.sta.addr);
|
|
|
|
- il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
|
|
|
|
- il->stations[sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- }
|
|
|
|
- *sta_id_r = sta_id;
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_add_station_common);
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_sta_ucode_deactivate - deactivate ucode status for a station
|
|
|
|
- *
|
|
|
|
- * il->sta_lock must be held
|
|
|
|
- */
|
|
|
|
-static void il_sta_ucode_deactivate(struct il_priv *il, u8 sta_id)
|
|
|
|
-{
|
|
|
|
- /* Ucode must be active and driver must be non active */
|
|
|
|
- if ((il->stations[sta_id].used &
|
|
|
|
- (IL_STA_UCODE_ACTIVE | IL_STA_DRIVER_ACTIVE)) !=
|
|
|
|
- IL_STA_UCODE_ACTIVE)
|
|
|
|
- IL_ERR("removed non active STA %u\n", sta_id);
|
|
|
|
-
|
|
|
|
- il->stations[sta_id].used &= ~IL_STA_UCODE_ACTIVE;
|
|
|
|
-
|
|
|
|
- memset(&il->stations[sta_id], 0, sizeof(struct il_station_entry));
|
|
|
|
- D_ASSOC("Removed STA %u\n", sta_id);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-static int il_send_remove_station(struct il_priv *il,
|
|
|
|
- const u8 *addr, int sta_id,
|
|
|
|
- bool temporary)
|
|
|
|
-{
|
|
|
|
- struct il_rx_pkt *pkt;
|
|
|
|
- int ret;
|
|
|
|
-
|
|
|
|
- unsigned long flags_spin;
|
|
|
|
- struct il_rem_sta_cmd rm_sta_cmd;
|
|
|
|
-
|
|
|
|
- struct il_host_cmd cmd = {
|
|
|
|
- .id = C_REM_STA,
|
|
|
|
- .len = sizeof(struct il_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 = il_send_cmd(il, &cmd);
|
|
|
|
-
|
|
|
|
- if (ret)
|
|
|
|
- return ret;
|
|
|
|
-
|
|
|
|
- pkt = (struct il_rx_pkt *)cmd.reply_page;
|
|
|
|
- if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
|
|
|
|
- IL_ERR("Bad return from C_REM_STA (0x%08X)\n",
|
|
|
|
- pkt->hdr.flags);
|
|
|
|
- ret = -EIO;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (!ret) {
|
|
|
|
- switch (pkt->u.rem_sta.status) {
|
|
|
|
- case REM_STA_SUCCESS_MSK:
|
|
|
|
- if (!temporary) {
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- il_sta_ucode_deactivate(il, sta_id);
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock,
|
|
|
|
- flags_spin);
|
|
|
|
- }
|
|
|
|
- D_ASSOC("C_REM_STA PASSED\n");
|
|
|
|
- break;
|
|
|
|
- default:
|
|
|
|
- ret = -EIO;
|
|
|
|
- IL_ERR("C_REM_STA failed\n");
|
|
|
|
- break;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- il_free_pages(il, cmd.reply_page);
|
|
|
|
-
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_remove_station - Remove driver's knowledge of station.
|
|
|
|
- */
|
|
|
|
-int il_remove_station(struct il_priv *il, const u8 sta_id,
|
|
|
|
- const u8 *addr)
|
|
|
|
-{
|
|
|
|
- unsigned long flags;
|
|
|
|
-
|
|
|
|
- if (!il_is_ready(il)) {
|
|
|
|
- D_INFO(
|
|
|
|
- "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;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- D_ASSOC("Removing STA from driver:%d %pM\n",
|
|
|
|
- sta_id, addr);
|
|
|
|
-
|
|
|
|
- if (WARN_ON(sta_id == IL_INVALID_STATION))
|
|
|
|
- return -EINVAL;
|
|
|
|
-
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags);
|
|
|
|
-
|
|
|
|
- if (!(il->stations[sta_id].used & IL_STA_DRIVER_ACTIVE)) {
|
|
|
|
- D_INFO("Removing %pM but non DRIVER active\n",
|
|
|
|
- addr);
|
|
|
|
- goto out_err;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (!(il->stations[sta_id].used & IL_STA_UCODE_ACTIVE)) {
|
|
|
|
- D_INFO("Removing %pM but non UCODE active\n",
|
|
|
|
- addr);
|
|
|
|
- goto out_err;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- if (il->stations[sta_id].used & IL_STA_LOCAL) {
|
|
|
|
- kfree(il->stations[sta_id].lq);
|
|
|
|
- il->stations[sta_id].lq = NULL;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- il->stations[sta_id].used &= ~IL_STA_DRIVER_ACTIVE;
|
|
|
|
-
|
|
|
|
- il->num_stations--;
|
|
|
|
-
|
|
|
|
- BUG_ON(il->num_stations < 0);
|
|
|
|
-
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
|
|
-
|
|
|
|
- return il_send_remove_station(il, addr, sta_id, false);
|
|
|
|
-out_err:
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
|
|
- return -EINVAL;
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL_GPL(il_remove_station);
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_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 il_clear_ucode_stations(struct il_priv *il,
|
|
|
|
- struct il_rxon_context *ctx)
|
|
|
|
-{
|
|
|
|
- int i;
|
|
|
|
- unsigned long flags_spin;
|
|
|
|
- bool cleared = false;
|
|
|
|
-
|
|
|
|
- D_INFO("Clearing ucode stations in driver\n");
|
|
|
|
-
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
|
|
- if (ctx && ctx->ctxid != il->stations[i].ctxid)
|
|
|
|
- continue;
|
|
|
|
-
|
|
|
|
- if (il->stations[i].used & IL_STA_UCODE_ACTIVE) {
|
|
|
|
- D_INFO(
|
|
|
|
- "Clearing ucode active for station %d\n", i);
|
|
|
|
- il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
|
|
|
|
- cleared = true;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
-
|
|
|
|
- if (!cleared)
|
|
|
|
- D_INFO(
|
|
|
|
- "No active stations found to be cleared\n");
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_clear_ucode_stations);
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_restore_stations() - Restore driver known stations to device
|
|
|
|
- *
|
|
|
|
- * All stations considered active by driver, but not present in ucode, is
|
|
|
|
- * restored.
|
|
|
|
- *
|
|
|
|
- * Function sleeps.
|
|
|
|
- */
|
|
|
|
-void
|
|
|
|
-il_restore_stations(struct il_priv *il, struct il_rxon_context *ctx)
|
|
|
|
-{
|
|
|
|
- struct il_addsta_cmd sta_cmd;
|
|
|
|
- struct il_link_quality_cmd lq;
|
|
|
|
- unsigned long flags_spin;
|
|
|
|
- int i;
|
|
|
|
- bool found = false;
|
|
|
|
- int ret;
|
|
|
|
- bool send_lq;
|
|
|
|
-
|
|
|
|
- if (!il_is_ready(il)) {
|
|
|
|
- D_INFO(
|
|
|
|
- "Not ready yet, not restoring any stations.\n");
|
|
|
|
- return;
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- D_ASSOC("Restoring all known stations ... start.\n");
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
|
|
- if (ctx->ctxid != il->stations[i].ctxid)
|
|
|
|
- continue;
|
|
|
|
- if ((il->stations[i].used & IL_STA_DRIVER_ACTIVE) &&
|
|
|
|
- !(il->stations[i].used & IL_STA_UCODE_ACTIVE)) {
|
|
|
|
- D_ASSOC("Restoring sta %pM\n",
|
|
|
|
- il->stations[i].sta.sta.addr);
|
|
|
|
- il->stations[i].sta.mode = 0;
|
|
|
|
- il->stations[i].used |= IL_STA_UCODE_INPROGRESS;
|
|
|
|
- found = true;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
|
|
- if ((il->stations[i].used & IL_STA_UCODE_INPROGRESS)) {
|
|
|
|
- memcpy(&sta_cmd, &il->stations[i].sta,
|
|
|
|
- sizeof(struct il_addsta_cmd));
|
|
|
|
- send_lq = false;
|
|
|
|
- if (il->stations[i].lq) {
|
|
|
|
- memcpy(&lq, il->stations[i].lq,
|
|
|
|
- sizeof(struct il_link_quality_cmd));
|
|
|
|
- send_lq = true;
|
|
|
|
- }
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- ret = il_send_add_sta(il, &sta_cmd, CMD_SYNC);
|
|
|
|
- if (ret) {
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- IL_ERR("Adding station %pM failed.\n",
|
|
|
|
- il->stations[i].sta.sta.addr);
|
|
|
|
- il->stations[i].used &=
|
|
|
|
- ~IL_STA_DRIVER_ACTIVE;
|
|
|
|
- il->stations[i].used &=
|
|
|
|
- ~IL_STA_UCODE_INPROGRESS;
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock,
|
|
|
|
- flags_spin);
|
|
|
|
- }
|
|
|
|
- /*
|
|
|
|
- * Rate scaling has already been initialized, send
|
|
|
|
- * current LQ command
|
|
|
|
- */
|
|
|
|
- if (send_lq)
|
|
|
|
- il_send_lq_cmd(il, ctx, &lq,
|
|
|
|
- CMD_SYNC, true);
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- il->stations[i].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
-
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- if (!found)
|
|
|
|
- D_INFO("Restoring all known stations"
|
|
|
|
- " .... no stations to be restored.\n");
|
|
|
|
- else
|
|
|
|
- D_INFO("Restoring all known stations"
|
|
|
|
- " .... complete.\n");
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_restore_stations);
|
|
|
|
-
|
|
|
|
-int il_get_free_ucode_key_idx(struct il_priv *il)
|
|
|
|
-{
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- for (i = 0; i < il->sta_key_max_num; i++)
|
|
|
|
- if (!test_and_set_bit(i, &il->ucode_key_table))
|
|
|
|
- return i;
|
|
|
|
-
|
|
|
|
- return WEP_INVALID_OFFSET;
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_get_free_ucode_key_idx);
|
|
|
|
-
|
|
|
|
-void il_dealloc_bcast_stations(struct il_priv *il)
|
|
|
|
-{
|
|
|
|
- unsigned long flags;
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags);
|
|
|
|
- for (i = 0; i < il->hw_params.max_stations; i++) {
|
|
|
|
- if (!(il->stations[i].used & IL_STA_BCAST))
|
|
|
|
- continue;
|
|
|
|
-
|
|
|
|
- il->stations[i].used &= ~IL_STA_UCODE_ACTIVE;
|
|
|
|
- il->num_stations--;
|
|
|
|
- BUG_ON(il->num_stations < 0);
|
|
|
|
- kfree(il->stations[i].lq);
|
|
|
|
- il->stations[i].lq = NULL;
|
|
|
|
- }
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags);
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL_GPL(il_dealloc_bcast_stations);
|
|
|
|
-
|
|
|
|
-#ifdef CONFIG_IWLEGACY_DEBUG
|
|
|
|
-static void il_dump_lq_cmd(struct il_priv *il,
|
|
|
|
- struct il_link_quality_cmd *lq)
|
|
|
|
-{
|
|
|
|
- int i;
|
|
|
|
- D_RATE("lq station id 0x%x\n", lq->sta_id);
|
|
|
|
- D_RATE("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++)
|
|
|
|
- D_RATE("lq idx %d 0x%X\n",
|
|
|
|
- i, lq->rs_table[i].rate_n_flags);
|
|
|
|
-}
|
|
|
|
-#else
|
|
|
|
-static inline void il_dump_lq_cmd(struct il_priv *il,
|
|
|
|
- struct il_link_quality_cmd *lq)
|
|
|
|
-{
|
|
|
|
-}
|
|
|
|
-#endif
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_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 il_is_lq_table_valid(struct il_priv *il,
|
|
|
|
- struct il_rxon_context *ctx,
|
|
|
|
- struct il_link_quality_cmd *lq)
|
|
|
|
-{
|
|
|
|
- int i;
|
|
|
|
-
|
|
|
|
- if (ctx->ht.enabled)
|
|
|
|
- return true;
|
|
|
|
-
|
|
|
|
- D_INFO("Channel %u is not an HT channel\n",
|
|
|
|
- ctx->active.channel);
|
|
|
|
- for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
|
|
|
|
- if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
|
|
|
|
- RATE_MCS_HT_MSK) {
|
|
|
|
- D_INFO(
|
|
|
|
- "idx %d of LQ expects HT channel\n",
|
|
|
|
- i);
|
|
|
|
- return false;
|
|
|
|
- }
|
|
|
|
- }
|
|
|
|
- return true;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-/**
|
|
|
|
- * il_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 il_send_lq_cmd(struct il_priv *il, struct il_rxon_context *ctx,
|
|
|
|
- struct il_link_quality_cmd *lq, u8 flags, bool init)
|
|
|
|
-{
|
|
|
|
- int ret = 0;
|
|
|
|
- unsigned long flags_spin;
|
|
|
|
-
|
|
|
|
- struct il_host_cmd cmd = {
|
|
|
|
- .id = C_TX_LINK_QUALITY_CMD,
|
|
|
|
- .len = sizeof(struct il_link_quality_cmd),
|
|
|
|
- .flags = flags,
|
|
|
|
- .data = lq,
|
|
|
|
- };
|
|
|
|
-
|
|
|
|
- if (WARN_ON(lq->sta_id == IL_INVALID_STATION))
|
|
|
|
- return -EINVAL;
|
|
|
|
-
|
|
|
|
-
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- if (!(il->stations[lq->sta_id].used & IL_STA_DRIVER_ACTIVE)) {
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- return -EINVAL;
|
|
|
|
- }
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
-
|
|
|
|
- il_dump_lq_cmd(il, lq);
|
|
|
|
- BUG_ON(init && (cmd.flags & CMD_ASYNC));
|
|
|
|
-
|
|
|
|
- if (il_is_lq_table_valid(il, ctx, lq))
|
|
|
|
- ret = il_send_cmd(il, &cmd);
|
|
|
|
- else
|
|
|
|
- ret = -EINVAL;
|
|
|
|
-
|
|
|
|
- if (cmd.flags & CMD_ASYNC)
|
|
|
|
- return ret;
|
|
|
|
-
|
|
|
|
- if (init) {
|
|
|
|
- D_INFO("init LQ command complete,"
|
|
|
|
- " clearing sta addition status for sta %d\n",
|
|
|
|
- lq->sta_id);
|
|
|
|
- spin_lock_irqsave(&il->sta_lock, flags_spin);
|
|
|
|
- il->stations[lq->sta_id].used &= ~IL_STA_UCODE_INPROGRESS;
|
|
|
|
- spin_unlock_irqrestore(&il->sta_lock, flags_spin);
|
|
|
|
- }
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_send_lq_cmd);
|
|
|
|
-
|
|
|
|
-int il_mac_sta_remove(struct ieee80211_hw *hw,
|
|
|
|
- struct ieee80211_vif *vif,
|
|
|
|
- struct ieee80211_sta *sta)
|
|
|
|
-{
|
|
|
|
- struct il_priv *il = hw->priv;
|
|
|
|
- struct il_station_priv_common *sta_common = (void *)sta->drv_priv;
|
|
|
|
- int ret;
|
|
|
|
-
|
|
|
|
- D_INFO("received request to remove station %pM\n",
|
|
|
|
- sta->addr);
|
|
|
|
- mutex_lock(&il->mutex);
|
|
|
|
- D_INFO("proceeding to remove station %pM\n",
|
|
|
|
- sta->addr);
|
|
|
|
- ret = il_remove_station(il, sta_common->sta_id, sta->addr);
|
|
|
|
- if (ret)
|
|
|
|
- IL_ERR("Error removing station %pM\n",
|
|
|
|
- sta->addr);
|
|
|
|
- mutex_unlock(&il->mutex);
|
|
|
|
- return ret;
|
|
|
|
-}
|
|
|
|
-EXPORT_SYMBOL(il_mac_sta_remove);
|
|
|