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668 lines
18 KiB
668 lines
18 KiB
/* |
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* Atheros CARL9170 driver |
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* |
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* Driver specific definitions |
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* |
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* Copyright 2008, Johannes Berg <[email protected]> |
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* Copyright 2009, 2010, Christian Lamparter <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; see the file COPYING. If not, see |
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* http://www.gnu.org/licenses/. |
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* |
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* This file incorporates work covered by the following copyright and |
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* permission notice: |
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* Copyright (c) 2007-2008 Atheros Communications, Inc. |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifndef __CARL9170_H |
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#define __CARL9170_H |
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|
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#include <linux/kernel.h> |
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#include <linux/firmware.h> |
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#include <linux/completion.h> |
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#include <linux/spinlock.h> |
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#include <linux/hw_random.h> |
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#include <net/cfg80211.h> |
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#include <net/mac80211.h> |
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#include <linux/usb.h> |
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#ifdef CONFIG_CARL9170_LEDS |
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#include <linux/leds.h> |
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#endif /* CONFIG_CARL9170_LEDS */ |
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#ifdef CONFIG_CARL9170_WPC |
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#include <linux/input.h> |
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#endif /* CONFIG_CARL9170_WPC */ |
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#include "eeprom.h" |
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#include "wlan.h" |
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#include "hw.h" |
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#include "fwdesc.h" |
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#include "fwcmd.h" |
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#include "../regd.h" |
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|
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#ifdef CONFIG_CARL9170_DEBUGFS |
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#include "debug.h" |
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#endif /* CONFIG_CARL9170_DEBUGFS */ |
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|
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#define CARL9170FW_NAME "carl9170-1.fw" |
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|
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#define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1) |
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|
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static inline u8 ar9170_qmap(u8 idx) |
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{ |
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return 3 - idx; /* { 3, 2, 1, 0 } */ |
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} |
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#define CARL9170_MAX_RX_BUFFER_SIZE 8192 |
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|
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enum carl9170_device_state { |
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CARL9170_UNKNOWN_STATE, |
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CARL9170_STOPPED, |
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CARL9170_IDLE, |
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CARL9170_STARTED, |
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}; |
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|
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#define WME_BA_BMP_SIZE 64 |
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#define CARL9170_TX_USER_RATE_TRIES 3 |
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|
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#define TID_TO_WME_AC(_tid) \ |
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((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \ |
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(((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \ |
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(((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \ |
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IEEE80211_AC_VO) |
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|
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#define SEQ_DIFF(_start, _seq) \ |
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(((_start) - (_seq)) & 0x0fff) |
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#define SEQ_PREV(_seq) \ |
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(((_seq) - 1) & 0x0fff) |
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#define SEQ_NEXT(_seq) \ |
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(((_seq) + 1) & 0x0fff) |
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#define BAW_WITHIN(_start, _bawsz, _seqno) \ |
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((((_seqno) - (_start)) & 0xfff) < (_bawsz)) |
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|
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enum carl9170_tid_state { |
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CARL9170_TID_STATE_INVALID, |
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CARL9170_TID_STATE_KILLED, |
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CARL9170_TID_STATE_SHUTDOWN, |
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CARL9170_TID_STATE_SUSPEND, |
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CARL9170_TID_STATE_PROGRESS, |
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CARL9170_TID_STATE_IDLE, |
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CARL9170_TID_STATE_XMIT, |
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}; |
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#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE) |
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#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS)) |
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#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE)) |
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struct carl9170_sta_tid { |
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/* must be the first entry! */ |
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struct list_head list; |
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|
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/* temporary list for RCU unlink procedure */ |
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struct list_head tmp_list; |
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|
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/* lock for the following data structures */ |
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spinlock_t lock; |
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|
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unsigned int counter; |
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enum carl9170_tid_state state; |
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u8 tid; /* TID number ( 0 - 15 ) */ |
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u16 max; /* max. AMPDU size */ |
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|
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u16 snx; /* awaiting _next_ frame */ |
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u16 hsn; /* highest _queued_ sequence */ |
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u16 bsn; /* base of the tx/agg bitmap */ |
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unsigned long bitmap[CARL9170_BAW_SIZE]; |
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|
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/* Preaggregation reorder queue */ |
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struct sk_buff_head queue; |
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struct ieee80211_sta *sta; |
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struct ieee80211_vif *vif; |
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}; |
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#define CARL9170_QUEUE_TIMEOUT 256 |
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#define CARL9170_BUMP_QUEUE 1000 |
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#define CARL9170_TX_TIMEOUT 2500 |
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#define CARL9170_JANITOR_DELAY 128 |
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#define CARL9170_QUEUE_STUCK_TIMEOUT 5500 |
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#define CARL9170_STAT_WORK 30000 |
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#define CARL9170_NUM_TX_AGG_MAX 30 |
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|
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/* |
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* Tradeoff between stability/latency and speed. |
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* |
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* AR9170_TXQ_DEPTH is devised by dividing the amount of available |
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* tx buffers with the size of a full ethernet frame + overhead. |
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* |
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* Naturally: The higher the limit, the faster the device CAN send. |
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* However, even a slight over-commitment at the wrong time and the |
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* hardware is doomed to send all already-queued frames at suboptimal |
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* rates. This in turn leads to an enormous amount of unsuccessful |
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* retries => Latency goes up, whereas the throughput goes down. CRASH! |
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*/ |
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#define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2) |
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#define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH) |
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struct carl9170_tx_queue_stats { |
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unsigned int count; |
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unsigned int limit; |
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unsigned int len; |
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}; |
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struct carl9170_vif { |
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unsigned int id; |
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struct ieee80211_vif __rcu *vif; |
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}; |
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struct carl9170_vif_info { |
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struct list_head list; |
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bool active; |
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unsigned int id; |
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struct sk_buff *beacon; |
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bool enable_beacon; |
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}; |
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#define AR9170_NUM_RX_URBS 16 |
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#define AR9170_NUM_RX_URBS_MUL 2 |
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#define AR9170_NUM_TX_URBS 8 |
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#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS) |
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enum carl9170_device_features { |
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CARL9170_WPS_BUTTON = BIT(0), |
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CARL9170_ONE_LED = BIT(1), |
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}; |
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#ifdef CONFIG_CARL9170_LEDS |
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struct ar9170; |
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struct carl9170_led { |
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struct ar9170 *ar; |
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struct led_classdev l; |
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char name[32]; |
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unsigned int toggled; |
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bool last_state; |
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bool registered; |
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}; |
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#endif /* CONFIG_CARL9170_LEDS */ |
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enum carl9170_restart_reasons { |
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CARL9170_RR_NO_REASON = 0, |
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CARL9170_RR_FATAL_FIRMWARE_ERROR, |
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CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS, |
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CARL9170_RR_WATCHDOG, |
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CARL9170_RR_STUCK_TX, |
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CARL9170_RR_UNRESPONSIVE_DEVICE, |
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CARL9170_RR_COMMAND_TIMEOUT, |
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CARL9170_RR_TOO_MANY_PHY_ERRORS, |
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CARL9170_RR_LOST_RSP, |
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CARL9170_RR_INVALID_RSP, |
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CARL9170_RR_USER_REQUEST, |
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__CARL9170_RR_LAST, |
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}; |
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enum carl9170_erp_modes { |
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CARL9170_ERP_INVALID, |
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CARL9170_ERP_AUTO, |
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CARL9170_ERP_MAC80211, |
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CARL9170_ERP_OFF, |
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CARL9170_ERP_CTS, |
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CARL9170_ERP_RTS, |
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__CARL9170_ERP_NUM, |
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}; |
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struct ar9170 { |
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struct ath_common common; |
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struct ieee80211_hw *hw; |
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struct mutex mutex; |
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enum carl9170_device_state state; |
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spinlock_t state_lock; |
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enum carl9170_restart_reasons last_reason; |
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bool registered; |
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/* USB */ |
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struct usb_device *udev; |
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struct usb_interface *intf; |
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struct usb_anchor rx_anch; |
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struct usb_anchor rx_work; |
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struct usb_anchor rx_pool; |
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struct usb_anchor tx_wait; |
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struct usb_anchor tx_anch; |
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struct usb_anchor tx_cmd; |
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struct usb_anchor tx_err; |
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struct tasklet_struct usb_tasklet; |
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atomic_t tx_cmd_urbs; |
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atomic_t tx_anch_urbs; |
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atomic_t rx_anch_urbs; |
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atomic_t rx_work_urbs; |
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atomic_t rx_pool_urbs; |
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kernel_ulong_t features; |
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bool usb_ep_cmd_is_bulk; |
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/* firmware settings */ |
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struct completion fw_load_wait; |
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struct completion fw_boot_wait; |
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struct { |
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const struct carl9170fw_desc_head *desc; |
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const struct firmware *fw; |
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unsigned int offset; |
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unsigned int address; |
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unsigned int cmd_bufs; |
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unsigned int api_version; |
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unsigned int vif_num; |
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unsigned int err_counter; |
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unsigned int bug_counter; |
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u32 beacon_addr; |
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unsigned int beacon_max_len; |
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bool rx_stream; |
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bool tx_stream; |
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bool rx_filter; |
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bool hw_counters; |
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unsigned int mem_blocks; |
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unsigned int mem_block_size; |
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unsigned int rx_size; |
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unsigned int tx_seq_table; |
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bool ba_filter; |
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bool disable_offload_fw; |
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} fw; |
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/* interface configuration combinations */ |
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struct ieee80211_iface_limit if_comb_limits[1]; |
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struct ieee80211_iface_combination if_combs[1]; |
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/* reset / stuck frames/queue detection */ |
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struct work_struct restart_work; |
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struct work_struct ping_work; |
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unsigned int restart_counter; |
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unsigned long queue_stop_timeout[__AR9170_NUM_TXQ]; |
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unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ]; |
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bool needs_full_reset; |
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bool force_usb_reset; |
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atomic_t pending_restarts; |
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|
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/* interface mode settings */ |
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struct list_head vif_list; |
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unsigned long vif_bitmap; |
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unsigned int vifs; |
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struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC]; |
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/* beaconing */ |
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spinlock_t beacon_lock; |
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unsigned int global_pretbtt; |
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unsigned int global_beacon_int; |
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struct carl9170_vif_info __rcu *beacon_iter; |
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unsigned int beacon_enabled; |
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/* cryptographic engine */ |
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u64 usedkeys; |
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bool rx_software_decryption; |
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bool disable_offload; |
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/* filter settings */ |
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u64 cur_mc_hash; |
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u32 cur_filter; |
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unsigned int filter_state; |
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unsigned int rx_filter_caps; |
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bool sniffer_enabled; |
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/* MAC */ |
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enum carl9170_erp_modes erp_mode; |
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/* PHY */ |
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struct ieee80211_channel *channel; |
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unsigned int num_channels; |
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int noise[4]; |
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unsigned int chan_fail; |
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unsigned int total_chan_fail; |
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u8 heavy_clip; |
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u8 ht_settings; |
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struct { |
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u64 active; /* usec */ |
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u64 cca; /* usec */ |
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u64 tx_time; /* usec */ |
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u64 rx_total; |
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u64 rx_overrun; |
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} tally; |
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struct delayed_work stat_work; |
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struct survey_info *survey; |
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/* power calibration data */ |
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u8 power_5G_leg[4]; |
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u8 power_2G_cck[4]; |
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u8 power_2G_ofdm[4]; |
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u8 power_5G_ht20[8]; |
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u8 power_5G_ht40[8]; |
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u8 power_2G_ht20[8]; |
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u8 power_2G_ht40[8]; |
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#ifdef CONFIG_CARL9170_LEDS |
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/* LED */ |
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struct delayed_work led_work; |
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struct carl9170_led leds[AR9170_NUM_LEDS]; |
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#endif /* CONFIG_CARL9170_LEDS */ |
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|
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/* qos queue settings */ |
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spinlock_t tx_stats_lock; |
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struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ]; |
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struct ieee80211_tx_queue_params edcf[5]; |
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struct completion tx_flush; |
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/* CMD */ |
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int cmd_seq; |
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int readlen; |
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u8 *readbuf; |
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spinlock_t cmd_lock; |
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struct completion cmd_wait; |
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union { |
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__le32 cmd_buf[PAYLOAD_MAX + 1]; |
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struct carl9170_cmd cmd; |
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struct carl9170_rsp rsp; |
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}; |
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/* statistics */ |
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unsigned int tx_dropped; |
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unsigned int tx_ack_failures; |
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unsigned int tx_fcs_errors; |
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unsigned int rx_dropped; |
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/* EEPROM */ |
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struct ar9170_eeprom eeprom; |
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/* tx queuing */ |
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struct sk_buff_head tx_pending[__AR9170_NUM_TXQ]; |
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struct sk_buff_head tx_status[__AR9170_NUM_TXQ]; |
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struct delayed_work tx_janitor; |
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unsigned long tx_janitor_last_run; |
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bool tx_schedule; |
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|
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/* tx ampdu */ |
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struct work_struct ampdu_work; |
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spinlock_t tx_ampdu_list_lock; |
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struct carl9170_sta_tid __rcu *tx_ampdu_iter; |
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struct list_head tx_ampdu_list; |
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atomic_t tx_ampdu_upload; |
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atomic_t tx_ampdu_scheduler; |
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atomic_t tx_total_pending; |
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atomic_t tx_total_queued; |
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unsigned int tx_ampdu_list_len; |
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int current_density; |
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int current_factor; |
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bool tx_ampdu_schedule; |
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|
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/* internal memory management */ |
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spinlock_t mem_lock; |
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unsigned long *mem_bitmap; |
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atomic_t mem_free_blocks; |
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atomic_t mem_allocs; |
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/* rxstream mpdu merge */ |
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struct ar9170_rx_head rx_plcp; |
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bool rx_has_plcp; |
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struct sk_buff *rx_failover; |
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int rx_failover_missing; |
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u32 ampdu_ref; |
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/* FIFO for collecting outstanding BlockAckRequest */ |
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struct list_head bar_list[__AR9170_NUM_TXQ]; |
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spinlock_t bar_list_lock[__AR9170_NUM_TXQ]; |
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#ifdef CONFIG_CARL9170_WPC |
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struct { |
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bool pbc_state; |
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struct input_dev *pbc; |
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char name[32]; |
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char phys[32]; |
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} wps; |
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#endif /* CONFIG_CARL9170_WPC */ |
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#ifdef CONFIG_CARL9170_DEBUGFS |
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struct carl9170_debug debug; |
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struct dentry *debug_dir; |
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#endif /* CONFIG_CARL9170_DEBUGFS */ |
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|
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/* PSM */ |
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struct work_struct ps_work; |
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struct { |
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unsigned int dtim_counter; |
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unsigned long last_beacon; |
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unsigned long last_action; |
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unsigned long last_slept; |
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unsigned int sleep_ms; |
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unsigned int off_override; |
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bool state; |
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} ps; |
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#ifdef CONFIG_CARL9170_HWRNG |
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# define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN |
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struct { |
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struct hwrng rng; |
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bool initialized; |
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char name[30 + 1]; |
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u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; |
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unsigned int cache_idx; |
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} rng; |
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#endif /* CONFIG_CARL9170_HWRNG */ |
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}; |
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enum carl9170_ps_off_override_reasons { |
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PS_OFF_VIF = BIT(0), |
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PS_OFF_BCN = BIT(1), |
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}; |
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struct carl9170_bar_list_entry { |
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struct list_head list; |
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struct rcu_head head; |
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struct sk_buff *skb; |
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}; |
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struct carl9170_ba_stats { |
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u8 ampdu_len; |
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u8 ampdu_ack_len; |
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bool clear; |
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bool req; |
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}; |
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struct carl9170_sta_info { |
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bool ht_sta; |
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bool sleeping; |
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atomic_t pending_frames; |
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unsigned int ampdu_max_len; |
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struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS]; |
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struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS]; |
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}; |
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struct carl9170_tx_info { |
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unsigned long timeout; |
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struct ar9170 *ar; |
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struct kref ref; |
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}; |
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#define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s)) |
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#define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED)) |
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#define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE)) |
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#define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED)) |
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static inline void __carl9170_set_state(struct ar9170 *ar, |
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enum carl9170_device_state newstate) |
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{ |
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ar->state = newstate; |
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} |
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static inline void carl9170_set_state(struct ar9170 *ar, |
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enum carl9170_device_state newstate) |
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{ |
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unsigned long flags; |
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|
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spin_lock_irqsave(&ar->state_lock, flags); |
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__carl9170_set_state(ar, newstate); |
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spin_unlock_irqrestore(&ar->state_lock, flags); |
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} |
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static inline void carl9170_set_state_when(struct ar9170 *ar, |
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enum carl9170_device_state min, enum carl9170_device_state newstate) |
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{ |
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unsigned long flags; |
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|
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spin_lock_irqsave(&ar->state_lock, flags); |
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if (CHK_DEV_STATE(ar, min)) |
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__carl9170_set_state(ar, newstate); |
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spin_unlock_irqrestore(&ar->state_lock, flags); |
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} |
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|
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/* exported interface */ |
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void *carl9170_alloc(size_t priv_size); |
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int carl9170_register(struct ar9170 *ar); |
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void carl9170_unregister(struct ar9170 *ar); |
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void carl9170_free(struct ar9170 *ar); |
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void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r); |
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void carl9170_ps_check(struct ar9170 *ar); |
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|
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/* USB back-end */ |
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int carl9170_usb_open(struct ar9170 *ar); |
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void carl9170_usb_stop(struct ar9170 *ar); |
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void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb); |
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void carl9170_usb_handle_tx_err(struct ar9170 *ar); |
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int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids, |
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u32 plen, void *payload, u32 rlen, void *resp); |
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int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, |
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const bool free_buf); |
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int carl9170_usb_restart(struct ar9170 *ar); |
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void carl9170_usb_reset(struct ar9170 *ar); |
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|
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/* MAC */ |
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int carl9170_init_mac(struct ar9170 *ar); |
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int carl9170_set_qos(struct ar9170 *ar); |
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int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast); |
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int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id, |
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const u8 *mac); |
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int carl9170_set_operating_mode(struct ar9170 *ar); |
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int carl9170_set_beacon_timers(struct ar9170 *ar); |
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int carl9170_set_dyn_sifs_ack(struct ar9170 *ar); |
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int carl9170_set_rts_cts_rate(struct ar9170 *ar); |
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int carl9170_set_ampdu_settings(struct ar9170 *ar); |
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int carl9170_set_slot_time(struct ar9170 *ar); |
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int carl9170_set_mac_rates(struct ar9170 *ar); |
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int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry); |
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int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac, |
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const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen); |
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int carl9170_disable_key(struct ar9170 *ar, const u8 id); |
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int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel); |
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/* RX */ |
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void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len); |
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void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len); |
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/* TX */ |
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void carl9170_op_tx(struct ieee80211_hw *hw, |
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struct ieee80211_tx_control *control, |
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struct sk_buff *skb); |
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void carl9170_tx_janitor(struct work_struct *work); |
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void carl9170_tx_process_status(struct ar9170 *ar, |
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const struct carl9170_rsp *cmd); |
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void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb, |
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const bool success); |
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void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb); |
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void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb); |
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void carl9170_tx_scheduler(struct ar9170 *ar); |
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void carl9170_tx_get_skb(struct sk_buff *skb); |
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int carl9170_tx_put_skb(struct sk_buff *skb); |
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int carl9170_update_beacon(struct ar9170 *ar, const bool submit); |
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/* LEDs */ |
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#ifdef CONFIG_CARL9170_LEDS |
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int carl9170_led_register(struct ar9170 *ar); |
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void carl9170_led_unregister(struct ar9170 *ar); |
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#endif /* CONFIG_CARL9170_LEDS */ |
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int carl9170_led_init(struct ar9170 *ar); |
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int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state); |
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/* PHY / RF */ |
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int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel, |
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enum nl80211_channel_type bw); |
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int carl9170_get_noisefloor(struct ar9170 *ar); |
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/* FW */ |
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int carl9170_parse_firmware(struct ar9170 *ar); |
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extern struct ieee80211_rate __carl9170_ratetable[]; |
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extern int modparam_noht; |
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static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif) |
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{ |
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return container_of(carl_vif, struct ar9170, |
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vif_priv[carl_vif->id]); |
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} |
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static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb) |
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{ |
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return (void *)((struct _carl9170_tx_superframe *) |
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skb->data)->frame_data; |
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} |
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static inline u16 get_seq_h(struct ieee80211_hdr *hdr) |
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{ |
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return le16_to_cpu(hdr->seq_ctrl) >> 4; |
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} |
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static inline u16 carl9170_get_seq(struct sk_buff *skb) |
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{ |
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return get_seq_h(carl9170_get_hdr(skb)); |
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} |
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static inline u16 carl9170_get_tid(struct sk_buff *skb) |
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{ |
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return ieee80211_get_tid(carl9170_get_hdr(skb)); |
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} |
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static inline struct ieee80211_vif * |
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carl9170_get_vif(struct carl9170_vif_info *priv) |
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{ |
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return container_of((void *)priv, struct ieee80211_vif, drv_priv); |
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} |
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/* Protected by ar->mutex or RCU */ |
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static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar) |
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{ |
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struct carl9170_vif_info *cvif; |
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list_for_each_entry_rcu(cvif, &ar->vif_list, list) { |
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if (cvif->active) |
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return carl9170_get_vif(cvif); |
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} |
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return NULL; |
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} |
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static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif) |
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{ |
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bool ret; |
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rcu_read_lock(); |
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ret = (carl9170_get_main_vif(ar) == vif); |
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rcu_read_unlock(); |
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return ret; |
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} |
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#endif /* __CARL9170_H */
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