linux/drivers/net/wireless/ath/ath9k/common-beacon.c

/*
 * Copyright (c) 2008-2011 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 "common.h"

#define FUDGE …

static u32 ath9k_get_next_tbtt(struct ath_hw *ah, u64 tsf,
			       unsigned int interval)
{ … }

/*
 * This sets up the beacon timers according to the timestamp of the last
 * received beacon and the current TSF, configures PCF and DTIM
 * handling, programs the sleep registers so the hardware will wakeup in
 * time to receive beacons, and configures the beacon miss handling so
 * we'll receive a BMISS interrupt when we stop seeing beacons from the AP
 * we've associated with.
 */
int ath9k_cmn_beacon_config_sta(struct ath_hw *ah,
				 struct ath_beacon_config *conf,
				 struct ath9k_beacon_state *bs)
{ … }
EXPORT_SYMBOL(…);

void ath9k_cmn_beacon_config_adhoc(struct ath_hw *ah,
				   struct ath_beacon_config *conf)
{ … }
EXPORT_SYMBOL(…);

/*
 * For multi-bss ap support beacons are either staggered evenly over N slots or
 * burst together.  For the former arrange for the SWBA to be delivered for each
 * slot. Slots that are not occupied will generate nothing.
 */
void ath9k_cmn_beacon_config_ap(struct ath_hw *ah,
				struct ath_beacon_config *conf,
				unsigned int bc_buf)
{ … }
EXPORT_SYMBOL(…);