ath9k_common: add new module to share 802.11n driver helpers (db86f07e) · Commits · 戴 / test

drivers/net/wireless/ath/ath9k/Kconfig

+3 −0

Original line number	Diff line number	Diff line
		config ATH9K_HW
		tristate
		config ATH9K_COMMON
		tristate

		config ATH9K
		tristate "Atheros 802.11n wireless cards support"
		@@ -8,6 +10,7 @@ config ATH9K
		select MAC80211_LEDS
		select LEDS_CLASS
		select NEW_LEDS
		select ATH9K_COMMON
		---help---
		This module adds support for wireless adapters based on
		Atheros IEEE 802.11n AR5008, AR9001 and AR9002 family

drivers/net/wireless/ath/ath9k/Makefile

+3 −0

Original line number	Diff line number	Diff line
		@@ -23,3 +23,6 @@ ath9k_hw-y:= hw.o \
		mac.o \

		obj-$(CONFIG_ATH9K_HW) += ath9k_hw.o

		obj-$(CONFIG_ATH9K_COMMON) += ath9k_common.o
		ath9k_common-y:= common.o

drivers/net/wireless/ath/ath9k/ath9k.h

+6 −89

Original line number	Diff line number	Diff line
		@@ -19,14 +19,16 @@

		#include <linux/etherdevice.h>
		#include <linux/device.h>
		#include <net/mac80211.h>
		#include <linux/leds.h>

		#include "hw.h"
		#include "rc.h"
		#include "debug.h"
		#include "../ath.h"
		#include "../debug.h"
		#include "common.h"

		/*
		* Header for the ath9k.ko driver core only -- hw code nor any other driver
		* should rely on this file or its contents.
		*/

		struct ath_node;

		@@ -99,18 +101,6 @@ enum buffer_type {
		BUF_XRETRY = BIT(5),
		};

		struct ath_buf_state {
		int bfs_nframes;
		u16 bfs_al;
		u16 bfs_frmlen;
		int bfs_seqno;
		int bfs_tidno;
		int bfs_retries;
		u8 bf_type;
		u32 bfs_keyix;
		enum ath9k_key_type bfs_keytype;
		};

		#define bf_nframes bf_state.bfs_nframes
		#define bf_al bf_state.bfs_al
		#define bf_frmlen bf_state.bfs_frmlen
		@@ -125,21 +115,6 @@ struct ath_buf_state {
		#define bf_isretried(bf) (bf->bf_state.bf_type & BUF_RETRY)
		#define bf_isxretried(bf) (bf->bf_state.bf_type & BUF_XRETRY)

		struct ath_buf {
		struct list_head list;
		struct ath_buf bf_lastbf; / last buf of this unit (a frame or
		an aggregate) */
		struct ath_buf bf_next; / next subframe in the aggregate */
		struct sk_buff bf_mpdu; / enclosing frame structure */
		struct ath_desc bf_desc; / virtual addr of desc */
		dma_addr_t bf_daddr; /* physical addr of desc */
		dma_addr_t bf_buf_addr; /* physical addr of data buffer */
		bool bf_stale;
		u16 bf_flags;
		struct ath_buf_state bf_state;
		dma_addr_t bf_dmacontext;
		};

		struct ath_descdma {
		struct ath_desc *dd_desc;
		dma_addr_t dd_desc_paddr;
		@@ -159,13 +134,9 @@ void ath_descdma_cleanup(struct ath_softc sc, struct ath_descdma dd,

		#define ATH_MAX_ANTENNA 3
		#define ATH_RXBUF 512
		#define WME_NUM_TID 16
		#define ATH_TXBUF 512
		#define ATH_TXMAXTRY 13
		#define ATH_MGT_TXMAXTRY 4
		#define WME_BA_BMP_SIZE 64
		#define WME_MAX_BA WME_BA_BMP_SIZE
		#define ATH_TID_MAX_BUFS (2 * WME_MAX_BA)

		#define TID_TO_WME_AC(_tid) \
		((((_tid) == 0) \|\| ((_tid) == 3)) ? WME_AC_BE : \
		@@ -173,12 +144,6 @@ void ath_descdma_cleanup(struct ath_softc sc, struct ath_descdma dd,
		(((_tid) == 4) \|\| ((_tid) == 5)) ? WME_AC_VI : \
		WME_AC_VO)

		#define WME_AC_BE 0
		#define WME_AC_BK 1
		#define WME_AC_VI 2
		#define WME_AC_VO 3
		#define WME_NUM_AC 4

		#define ADDBA_EXCHANGE_ATTEMPTS 10
		#define ATH_AGGR_DELIM_SZ 4
		#define ATH_AGGR_MINPLEN 256 /* in bytes, minimum packet length */
		@@ -252,30 +217,6 @@ struct ath_txq {
		#define AGGR_ADDBA_COMPLETE BIT(2)
		#define AGGR_ADDBA_PROGRESS BIT(3)

		struct ath_atx_tid {
		struct list_head list;
		struct list_head buf_q;
		struct ath_node *an;
		struct ath_atx_ac *ac;
		struct ath_buf *tx_buf[ATH_TID_MAX_BUFS];
		u16 seq_start;
		u16 seq_next;
		u16 baw_size;
		int tidno;
		int baw_head; /* first un-acked tx buffer */
		int baw_tail; /* next unused tx buffer slot */
		int sched;
		int paused;
		u8 state;
		};

		struct ath_atx_ac {
		int sched;
		int qnum;
		struct list_head list;
		struct list_head tid_q;
		};

		struct ath_tx_control {
		struct ath_txq *txq;
		int if_id;
		@@ -286,29 +227,6 @@ struct ath_tx_control {
		#define ATH_TX_XRETRY 0x02
		#define ATH_TX_BAR 0x04

		#define ATH_RSSI_LPF_LEN 10
		#define RSSI_LPF_THRESHOLD -20
		#define ATH_RSSI_EP_MULTIPLIER (1<<7)
		#define ATH_EP_MUL(x, mul) ((x) * (mul))
		#define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
		#define ATH_LPF_RSSI(x, y, len) \
		((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
		#define ATH_RSSI_LPF(x, y) do { \
		if ((y) >= RSSI_LPF_THRESHOLD) \
		x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
		} while (0)
		#define ATH_EP_RND(x, mul) \
		((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))

		struct ath_node {
		struct ath_softc *an_sc;
		struct ath_atx_tid tid[WME_NUM_TID];
		struct ath_atx_ac ac[WME_NUM_AC];
		u16 maxampdu;
		u8 mpdudensity;
		int last_rssi;
		};

		struct ath_tx {
		u16 seq_no;
		u32 txqsetup;
		@@ -493,7 +411,6 @@ struct ath_led {
		#define IEEE80211_WEP_NKID 4 /* number of key ids */

		#define ATH_TXPOWER_MAX 100 /* .5 dBm units */
		#define ATH_RSSI_DUMMY_MARKER 0x127
		#define ATH_RATE_DUMMY_MARKER 0

		#define SC_OP_INVALID BIT(0)

drivers/net/wireless/ath/ath9k/common.c

0 → 100644

+326 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2009 Atheros Communications Inc.
		*
		* Permission to use, copy, modify, and/or distribute this software for any
		* purpose with or without fee is hereby granted, provided that the above
		* copyright notice and this permission notice appear in all copies.
		*
		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		*/

		/*
		* Module for common driver code between ath9k and ath9k_htc
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>

		#include "common.h"

		MODULE_AUTHOR("Atheros Communications");
		MODULE_DESCRIPTION("Shared library for Atheros wireless 802.11n LAN cards.");
		MODULE_LICENSE("Dual BSD/GPL");

		/* Common RX processing */

		/* Assumes you've already done the endian to CPU conversion */
		static bool ath9k_rx_accept(struct ath_common *common,
		struct sk_buff *skb,
		struct ieee80211_rx_status *rxs,
		struct ath_rx_status *rx_stats,
		bool *decrypt_error)
		{
		struct ath_hw *ah = common->ah;
		struct ieee80211_hdr *hdr;
		__le16 fc;

		hdr = (struct ieee80211_hdr *) skb->data;
		fc = hdr->frame_control;

		if (!rx_stats->rs_datalen)
		return false;
		/*
		* rs_status follows rs_datalen so if rs_datalen is too large
		* we can take a hint that hardware corrupted it, so ignore
		* those frames.
		*/
		if (rx_stats->rs_datalen > common->rx_bufsize)
		return false;

		if (rx_stats->rs_more) {
		/*
		* Frame spans multiple descriptors; this cannot happen yet
		* as we don't support jumbograms. If not in monitor mode,
		* discard the frame. Enable this if you want to see
		* error frames in Monitor mode.
		*/
		if (ah->opmode != NL80211_IFTYPE_MONITOR)
		return false;
		} else if (rx_stats->rs_status != 0) {
		if (rx_stats->rs_status & ATH9K_RXERR_CRC)
		rxs->flag \|= RX_FLAG_FAILED_FCS_CRC;
		if (rx_stats->rs_status & ATH9K_RXERR_PHY)
		return false;

		if (rx_stats->rs_status & ATH9K_RXERR_DECRYPT) {
		*decrypt_error = true;
		} else if (rx_stats->rs_status & ATH9K_RXERR_MIC) {
		if (ieee80211_is_ctl(fc))
		/*
		* Sometimes, we get invalid
		* MIC failures on valid control frames.
		* Remove these mic errors.
		*/
		rx_stats->rs_status &= ~ATH9K_RXERR_MIC;
		else
		rxs->flag \|= RX_FLAG_MMIC_ERROR;
		}
		/*
		* Reject error frames with the exception of
		* decryption and MIC failures. For monitor mode,
		* we also ignore the CRC error.
		*/
		if (ah->opmode == NL80211_IFTYPE_MONITOR) {
		if (rx_stats->rs_status &
		~(ATH9K_RXERR_DECRYPT \| ATH9K_RXERR_MIC \|
		ATH9K_RXERR_CRC))
		return false;
		} else {
		if (rx_stats->rs_status &
		~(ATH9K_RXERR_DECRYPT \| ATH9K_RXERR_MIC)) {
		return false;
		}
		}
		}
		return true;
		}

		static u8 ath9k_process_rate(struct ath_common *common,
		struct ieee80211_hw *hw,
		struct ath_rx_status *rx_stats,
		struct ieee80211_rx_status *rxs,
		struct sk_buff *skb)
		{
		struct ieee80211_supported_band *sband;
		enum ieee80211_band band;
		unsigned int i = 0;

		band = hw->conf.channel->band;
		sband = hw->wiphy->bands[band];

		if (rx_stats->rs_rate & 0x80) {
		/* HT rate */
		rxs->flag \|= RX_FLAG_HT;
		if (rx_stats->rs_flags & ATH9K_RX_2040)
		rxs->flag \|= RX_FLAG_40MHZ;
		if (rx_stats->rs_flags & ATH9K_RX_GI)
		rxs->flag \|= RX_FLAG_SHORT_GI;
		return rx_stats->rs_rate & 0x7f;
		}

		for (i = 0; i < sband->n_bitrates; i++) {
		if (sband->bitrates[i].hw_value == rx_stats->rs_rate)
		return i;
		if (sband->bitrates[i].hw_value_short == rx_stats->rs_rate) {
		rxs->flag \|= RX_FLAG_SHORTPRE;
		return i;
		}
		}

		/* No valid hardware bitrate found -- we should not get here */
		ath_print(common, ATH_DBG_XMIT, "unsupported hw bitrate detected "
		"0x%02x using 1 Mbit\n", rx_stats->rs_rate);
		if ((common->debug_mask & ATH_DBG_XMIT))
		print_hex_dump_bytes("", DUMP_PREFIX_NONE, skb->data, skb->len);

		return 0;
		}

		/*
		* Theory for reporting quality:
		*
		* At a hardware RSSI of 45 you will be able to use MCS 7 reliably.
		* At a hardware RSSI of 45 you will be able to use MCS 15 reliably.
		* At a hardware RSSI of 35 you should be able use 54 Mbps reliably.
		*
		* MCS 7 is the highets MCS index usable by a 1-stream device.
		* MCS 15 is the highest MCS index usable by a 2-stream device.
		*
		* All ath9k devices are either 1-stream or 2-stream.
		*
		* How many bars you see is derived from the qual reporting.
		*
		* A more elaborate scheme can be used here but it requires tables
		* of SNR/throughput for each possible mode used. For the MCS table
		* you can refer to the wireless wiki:
		*
		* http://wireless.kernel.org/en/developers/Documentation/ieee80211/802.11n
		*
		*/
		static int ath9k_compute_qual(struct ieee80211_hw *hw,
		struct ath_rx_status *rx_stats)
		{
		int qual;

		if (conf_is_ht(&hw->conf))
		qual = rx_stats->rs_rssi * 100 / 45;
		else
		qual = rx_stats->rs_rssi * 100 / 35;

		/*
		* rssi can be more than 45 though, anything above that
		* should be considered at 100%
		*/
		if (qual > 100)
		qual = 100;

		return qual;
		}

		static void ath9k_process_rssi(struct ath_common *common,
		struct ieee80211_hw *hw,
		struct sk_buff *skb,
		struct ath_rx_status *rx_stats)
		{
		struct ath_hw *ah = common->ah;
		struct ieee80211_sta *sta;
		struct ieee80211_hdr *hdr;
		struct ath_node *an;
		int last_rssi = ATH_RSSI_DUMMY_MARKER;
		__le16 fc;

		hdr = (struct ieee80211_hdr *)skb->data;
		fc = hdr->frame_control;

		rcu_read_lock();
		/*
		* XXX: use ieee80211_find_sta! This requires quite a bit of work
		* under the current ath9k virtual wiphy implementation as we have
		* no way of tying a vif to wiphy. Typically vifs are attached to
		* at least one sdata of a wiphy on mac80211 but with ath9k virtual
		* wiphy you'd have to iterate over every wiphy and each sdata.
		*/
		sta = ieee80211_find_sta_by_hw(hw, hdr->addr2);
		if (sta) {
		an = (struct ath_node *) sta->drv_priv;
		if (rx_stats->rs_rssi != ATH9K_RSSI_BAD &&
		!rx_stats->rs_moreaggr)
		ATH_RSSI_LPF(an->last_rssi, rx_stats->rs_rssi);
		last_rssi = an->last_rssi;
		}
		rcu_read_unlock();

		if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
		rx_stats->rs_rssi = ATH_EP_RND(last_rssi,
		ATH_RSSI_EP_MULTIPLIER);
		if (rx_stats->rs_rssi < 0)
		rx_stats->rs_rssi = 0;
		else if (rx_stats->rs_rssi > 127)
		rx_stats->rs_rssi = 127;

		/* Update Beacon RSSI, this is used by ANI. */
		if (ieee80211_is_beacon(fc))
		ah->stats.avgbrssi = rx_stats->rs_rssi;
		}

		/*
		* For Decrypt or Demic errors, we only mark packet status here and always push
		* up the frame up to let mac80211 handle the actual error case, be it no
		* decryption key or real decryption error. This let us keep statistics there.
		*/
		int ath9k_cmn_rx_skb_preprocess(struct ath_common *common,
		struct ieee80211_hw *hw,
		struct sk_buff *skb,
		struct ath_rx_status *rx_stats,
		struct ieee80211_rx_status *rx_status,
		bool *decrypt_error)
		{
		struct ath_hw *ah = common->ah;

		if (!ath9k_rx_accept(common, skb, rx_status, rx_stats, decrypt_error))
		return -EINVAL;

		ath9k_process_rssi(common, hw, skb, rx_stats);

		rx_status->rate_idx = ath9k_process_rate(common, hw,
		rx_stats, rx_status, skb);
		rx_status->mactime = ath9k_hw_extend_tsf(ah, rx_stats->rs_tstamp);
		rx_status->band = hw->conf.channel->band;
		rx_status->freq = hw->conf.channel->center_freq;
		rx_status->noise = common->ani.noise_floor;
		rx_status->signal = ATH_DEFAULT_NOISE_FLOOR + rx_stats->rs_rssi;
		rx_status->antenna = rx_stats->rs_antenna;
		rx_status->qual = ath9k_compute_qual(hw, rx_stats);
		rx_status->flag \|= RX_FLAG_TSFT;

		return 0;
		}
		EXPORT_SYMBOL(ath9k_cmn_rx_skb_preprocess);

		void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
		struct sk_buff *skb,
		struct ath_rx_status *rx_stats,
		struct ieee80211_rx_status *rxs,
		bool decrypt_error)
		{
		struct ath_hw *ah = common->ah;
		struct ieee80211_hdr *hdr;
		int hdrlen, padsize;
		u8 keyix;
		__le16 fc;

		/* see if any padding is done by the hw and remove it */
		hdr = (struct ieee80211_hdr *) skb->data;
		hdrlen = ieee80211_get_hdrlen_from_skb(skb);
		fc = hdr->frame_control;

		/* The MAC header is padded to have 32-bit boundary if the
		* packet payload is non-zero. The general calculation for
		* padsize would take into account odd header lengths:
		* padsize = (4 - hdrlen % 4) % 4; However, since only
		* even-length headers are used, padding can only be 0 or 2
		* bytes and we can optimize this a bit. In addition, we must
		* not try to remove padding from short control frames that do
		* not have payload. */
		padsize = hdrlen & 3;
		if (padsize && hdrlen >= 24) {
		memmove(skb->data + padsize, skb->data, hdrlen);
		skb_pull(skb, padsize);
		}

		keyix = rx_stats->rs_keyix;

		if (!(keyix == ATH9K_RXKEYIX_INVALID) && !decrypt_error) {
		rxs->flag \|= RX_FLAG_DECRYPTED;
		} else if (ieee80211_has_protected(fc)
		&& !decrypt_error && skb->len >= hdrlen + 4) {
		keyix = skb->data[hdrlen + 3] >> 6;

		if (test_bit(keyix, common->keymap))
		rxs->flag \|= RX_FLAG_DECRYPTED;
		}
		if (ah->sw_mgmt_crypto &&
		(rxs->flag & RX_FLAG_DECRYPTED) &&
		ieee80211_is_mgmt(fc))
		/* Use software decrypt for management frames. */
		rxs->flag &= ~RX_FLAG_DECRYPTED;
		}
		EXPORT_SYMBOL(ath9k_cmn_rx_skb_postprocess);

		static int __init ath9k_cmn_init(void)
		{
		return 0;
		}
		module_init(ath9k_cmn_init);

		static void __exit ath9k_cmn_exit(void)
		{
		return;
		}
		module_exit(ath9k_cmn_exit);

drivers/net/wireless/ath/ath9k/common.h

0 → 100644

+123 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2009 Atheros Communications Inc.
		*
		* Permission to use, copy, modify, and/or distribute this software for any
		* purpose with or without fee is hereby granted, provided that the above
		* copyright notice and this permission notice appear in all copies.
		*
		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		*/

		#include <net/mac80211.h>

		#include "../ath.h"
		#include "../debug.h"

		#include "hw.h"

		/* Common header for Atheros 802.11n base driver cores */

		#define WME_NUM_TID 16
		#define WME_BA_BMP_SIZE 64
		#define WME_MAX_BA WME_BA_BMP_SIZE
		#define ATH_TID_MAX_BUFS (2 * WME_MAX_BA)

		#define WME_AC_BE 0
		#define WME_AC_BK 1
		#define WME_AC_VI 2
		#define WME_AC_VO 3
		#define WME_NUM_AC 4

		#define ATH_RSSI_DUMMY_MARKER 0x127
		#define ATH_RSSI_LPF_LEN 10
		#define RSSI_LPF_THRESHOLD -20
		#define ATH_RSSI_EP_MULTIPLIER (1<<7)
		#define ATH_EP_MUL(x, mul) ((x) * (mul))
		#define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
		#define ATH_LPF_RSSI(x, y, len) \
		((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
		#define ATH_RSSI_LPF(x, y) do { \
		if ((y) >= RSSI_LPF_THRESHOLD) \
		x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
		} while (0)
		#define ATH_EP_RND(x, mul) \
		((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))

		struct ath_atx_ac {
		int sched;
		int qnum;
		struct list_head list;
		struct list_head tid_q;
		};

		struct ath_buf_state {
		int bfs_nframes;
		u16 bfs_al;
		u16 bfs_frmlen;
		int bfs_seqno;
		int bfs_tidno;
		int bfs_retries;
		u8 bf_type;
		u32 bfs_keyix;
		enum ath9k_key_type bfs_keytype;
		};

		struct ath_buf {
		struct list_head list;
		struct ath_buf bf_lastbf; / last buf of this unit (a frame or
		an aggregate) */
		struct ath_buf bf_next; / next subframe in the aggregate */
		struct sk_buff bf_mpdu; / enclosing frame structure */
		struct ath_desc bf_desc; / virtual addr of desc */
		dma_addr_t bf_daddr; /* physical addr of desc */
		dma_addr_t bf_buf_addr; /* physical addr of data buffer */
		bool bf_stale;
		u16 bf_flags;
		struct ath_buf_state bf_state;
		dma_addr_t bf_dmacontext;
		};

		struct ath_atx_tid {
		struct list_head list;
		struct list_head buf_q;
		struct ath_node *an;
		struct ath_atx_ac *ac;
		struct ath_buf *tx_buf[ATH_TID_MAX_BUFS];
		u16 seq_start;
		u16 seq_next;
		u16 baw_size;
		int tidno;
		int baw_head; /* first un-acked tx buffer */
		int baw_tail; /* next unused tx buffer slot */
		int sched;
		int paused;
		u8 state;
		};

		struct ath_node {
		struct ath_common *common;
		struct ath_atx_tid tid[WME_NUM_TID];
		struct ath_atx_ac ac[WME_NUM_AC];
		u16 maxampdu;
		u8 mpdudensity;
		int last_rssi;
		};

		int ath9k_cmn_rx_skb_preprocess(struct ath_common *common,
		struct ieee80211_hw *hw,
		struct sk_buff *skb,
		struct ath_rx_status *rx_stats,
		struct ieee80211_rx_status *rx_status,
		bool *decrypt_error);

		void ath9k_cmn_rx_skb_postprocess(struct ath_common *common,
		struct sk_buff *skb,
		struct ath_rx_status *rx_stats,
		struct ieee80211_rx_status *rxs,
		bool decrypt_error);

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