2 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
3 * Copyright (c) 2004-2005 Atheros Communications, Inc.
4 * Copyright (c) 2006 Devicescape Software, Inc.
5 * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
6 * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
7 * Copyright (c) 2010 Bruno Randolf <br1@einfach.org>
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
19 * redistribution must be conditioned upon including a substantially
20 * similar Disclaimer requirement for further binary redistribution.
21 * 3. Neither the names of the above-listed copyright holders nor the names
22 * of any contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * Alternatively, this software may be distributed under the terms of the
26 * GNU General Public License ("GPL") version 2 as published by the Free
27 * Software Foundation.
30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
32 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
33 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
34 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
35 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
38 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
40 * THE POSSIBILITY OF SUCH DAMAGES.
44 #include <asm/unaligned.h>
49 /********************\
50 * Mac80211 functions *
51 \********************/
54 ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
56 struct ath5k_hw *ah = hw->priv;
57 u16 qnum = skb_get_queue_mapping(skb);
59 if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) {
60 dev_kfree_skb_any(skb);
64 ath5k_tx_queue(hw, skb, &ah->txqs[qnum]);
69 ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
71 struct ath5k_hw *ah = hw->priv;
73 struct ath5k_vif *avf = (void *)vif->drv_priv;
75 mutex_lock(&ah->lock);
77 if ((vif->type == NL80211_IFTYPE_AP ||
78 vif->type == NL80211_IFTYPE_ADHOC)
79 && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) {
84 /* Don't allow other interfaces if one ad-hoc is configured.
85 * TODO: Fix the problems with ad-hoc and multiple other interfaces.
86 * We would need to operate the HW in ad-hoc mode to allow TSF updates
87 * for the IBSS, but this breaks with additional AP or STA interfaces
89 if (ah->num_adhoc_vifs ||
90 (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
91 ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n");
97 case NL80211_IFTYPE_AP:
98 case NL80211_IFTYPE_STATION:
99 case NL80211_IFTYPE_ADHOC:
100 case NL80211_IFTYPE_MESH_POINT:
101 avf->opmode = vif->type;
109 ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode);
111 /* Assign the vap/adhoc to a beacon xmit slot. */
112 if ((avf->opmode == NL80211_IFTYPE_AP) ||
113 (avf->opmode == NL80211_IFTYPE_ADHOC) ||
114 (avf->opmode == NL80211_IFTYPE_MESH_POINT)) {
117 WARN_ON(list_empty(&ah->bcbuf));
118 avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf,
120 list_del(&avf->bbuf->list);
123 for (slot = 0; slot < ATH_BCBUF; slot++) {
124 if (!ah->bslot[slot]) {
129 BUG_ON(ah->bslot[avf->bslot] != NULL);
130 ah->bslot[avf->bslot] = vif;
131 if (avf->opmode == NL80211_IFTYPE_AP)
133 else if (avf->opmode == NL80211_IFTYPE_ADHOC)
134 ah->num_adhoc_vifs++;
137 /* Any MAC address is fine, all others are included through the
140 memcpy(&ah->lladdr, vif->addr, ETH_ALEN);
141 ath5k_hw_set_lladdr(ah, vif->addr);
143 memcpy(&avf->lladdr, vif->addr, ETH_ALEN);
145 ath5k_update_bssid_mask_and_opmode(ah, vif);
148 mutex_unlock(&ah->lock);
154 ath5k_remove_interface(struct ieee80211_hw *hw,
155 struct ieee80211_vif *vif)
157 struct ath5k_hw *ah = hw->priv;
158 struct ath5k_vif *avf = (void *)vif->drv_priv;
161 mutex_lock(&ah->lock);
165 ath5k_txbuf_free_skb(ah, avf->bbuf);
166 list_add_tail(&avf->bbuf->list, &ah->bcbuf);
167 for (i = 0; i < ATH_BCBUF; i++) {
168 if (ah->bslot[i] == vif) {
175 if (avf->opmode == NL80211_IFTYPE_AP)
177 else if (avf->opmode == NL80211_IFTYPE_ADHOC)
178 ah->num_adhoc_vifs--;
180 ath5k_update_bssid_mask_and_opmode(ah, NULL);
181 mutex_unlock(&ah->lock);
186 * TODO: Phy disable/diversity etc
189 ath5k_config(struct ieee80211_hw *hw, u32 changed)
191 struct ath5k_hw *ah = hw->priv;
192 struct ieee80211_conf *conf = &hw->conf;
196 mutex_lock(&ah->lock);
198 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
199 ret = ath5k_chan_set(ah, conf->channel);
204 if ((changed & IEEE80211_CONF_CHANGE_POWER) &&
205 (ah->power_level != conf->power_level)) {
206 ah->power_level = conf->power_level;
209 ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2));
212 if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
213 ah->ah_retry_long = conf->long_frame_max_tx_count;
214 ah->ah_retry_short = conf->short_frame_max_tx_count;
216 for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++)
217 ath5k_hw_set_tx_retry_limits(ah, i);
221 * 1) Move this on config_interface and handle each case
222 * separately eg. when we have only one STA vif, use
223 * AR5K_ANTMODE_SINGLE_AP
225 * 2) Allow the user to change antenna mode eg. when only
226 * one antenna is present
228 * 3) Allow the user to set default/tx antenna when possible
230 * 4) Default mode should handle 90% of the cases, together
231 * with fixed a/b and single AP modes we should be able to
232 * handle 99%. Sectored modes are extreme cases and i still
233 * haven't found a usage for them. If we decide to support them,
234 * then we must allow the user to set how many tx antennas we
237 ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
240 mutex_unlock(&ah->lock);
246 ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
247 struct ieee80211_bss_conf *bss_conf, u32 changes)
249 struct ath5k_vif *avf = (void *)vif->drv_priv;
250 struct ath5k_hw *ah = hw->priv;
251 struct ath_common *common = ath5k_hw_common(ah);
254 mutex_lock(&ah->lock);
256 if (changes & BSS_CHANGED_BSSID) {
257 /* Cache for later use during resets */
258 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
260 ath5k_hw_set_bssid(ah);
264 if (changes & BSS_CHANGED_BEACON_INT)
265 ah->bintval = bss_conf->beacon_int;
267 if (changes & BSS_CHANGED_ERP_SLOT) {
270 ah->ah_short_slot = bss_conf->use_short_slot;
271 slot_time = ath5k_hw_get_default_slottime(ah) +
272 3 * ah->ah_coverage_class;
273 ath5k_hw_set_ifs_intervals(ah, slot_time);
276 if (changes & BSS_CHANGED_ASSOC) {
277 avf->assoc = bss_conf->assoc;
279 ah->assoc = bss_conf->assoc;
281 ah->assoc = ath5k_any_vif_assoc(ah);
283 if (ah->opmode == NL80211_IFTYPE_STATION)
284 ath5k_set_beacon_filter(hw, ah->assoc);
285 ath5k_hw_set_ledstate(ah, ah->assoc ?
286 AR5K_LED_ASSOC : AR5K_LED_INIT);
287 if (bss_conf->assoc) {
288 ATH5K_DBG(ah, ATH5K_DEBUG_ANY,
289 "Bss Info ASSOC %d, bssid: %pM\n",
290 bss_conf->aid, common->curbssid);
291 common->curaid = bss_conf->aid;
292 ath5k_hw_set_bssid(ah);
293 /* Once ANI is available you would start it here */
297 if (changes & BSS_CHANGED_BEACON) {
298 spin_lock_irqsave(&ah->block, flags);
299 ath5k_beacon_update(hw, vif);
300 spin_unlock_irqrestore(&ah->block, flags);
303 if (changes & BSS_CHANGED_BEACON_ENABLED)
304 ah->enable_beacon = bss_conf->enable_beacon;
306 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED |
307 BSS_CHANGED_BEACON_INT))
308 ath5k_beacon_config(ah);
310 mutex_unlock(&ah->lock);
315 ath5k_prepare_multicast(struct ieee80211_hw *hw,
316 struct netdev_hw_addr_list *mc_list)
320 struct netdev_hw_addr *ha;
325 netdev_hw_addr_list_for_each(ha, mc_list) {
326 /* calculate XOR of eight 6-bit values */
327 val = get_unaligned_le32(ha->addr + 0);
328 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
329 val = get_unaligned_le32(ha->addr + 3);
330 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
332 mfilt[pos / 32] |= (1 << (pos % 32));
333 /* XXX: we might be able to just do this instead,
334 * but not sure, needs testing, if we do use this we'd
335 * need to inform below not to reset the mcast */
336 /* ath5k_hw_set_mcast_filterindex(ah,
340 return ((u64)(mfilt[1]) << 32) | mfilt[0];
345 * o always accept unicast, broadcast, and multicast traffic
346 * o multicast traffic for all BSSIDs will be enabled if mac80211
348 * o maintain current state of phy ofdm or phy cck error reception.
349 * If the hardware detects any of these type of errors then
350 * ath5k_hw_get_rx_filter() will pass to us the respective
351 * hardware filters to be able to receive these type of frames.
352 * o probe request frames are accepted only when operating in
353 * hostap, adhoc, or monitor modes
354 * o enable promiscuous mode according to the interface state
356 * - when operating in adhoc mode so the 802.11 layer creates
357 * node table entries for peers,
358 * - when operating in station mode for collecting rssi data when
359 * the station is otherwise quiet, or
363 ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
364 unsigned int *new_flags, u64 multicast)
366 #define SUPPORTED_FIF_FLAGS \
367 (FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \
368 FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \
369 FIF_BCN_PRBRESP_PROMISC)
371 struct ath5k_hw *ah = hw->priv;
373 struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */
375 mutex_lock(&ah->lock);
377 mfilt[0] = multicast;
378 mfilt[1] = multicast >> 32;
380 /* Only deal with supported flags */
381 changed_flags &= SUPPORTED_FIF_FLAGS;
382 *new_flags &= SUPPORTED_FIF_FLAGS;
384 /* If HW detects any phy or radar errors, leave those filters on.
385 * Also, always enable Unicast, Broadcasts and Multicast
386 * XXX: move unicast, bssid broadcasts and multicast to mac80211 */
387 rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) |
388 (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST |
389 AR5K_RX_FILTER_MCAST);
391 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
392 if (*new_flags & FIF_PROMISC_IN_BSS)
393 __set_bit(ATH_STAT_PROMISC, ah->status);
395 __clear_bit(ATH_STAT_PROMISC, ah->status);
398 if (test_bit(ATH_STAT_PROMISC, ah->status))
399 rfilt |= AR5K_RX_FILTER_PROM;
401 /* Note, AR5K_RX_FILTER_MCAST is already enabled */
402 if (*new_flags & FIF_ALLMULTI) {
407 /* This is the best we can do */
408 if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL))
409 rfilt |= AR5K_RX_FILTER_PHYERR;
411 /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons
412 * and probes for any BSSID */
413 if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1))
414 rfilt |= AR5K_RX_FILTER_BEACON;
416 /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not
417 * set we should only pass on control frames for this
418 * station. This needs testing. I believe right now this
419 * enables *all* control frames, which is OK.. but
420 * but we should see if we can improve on granularity */
421 if (*new_flags & FIF_CONTROL)
422 rfilt |= AR5K_RX_FILTER_CONTROL;
424 /* Additional settings per mode -- this is per ath5k */
426 /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */
428 switch (ah->opmode) {
429 case NL80211_IFTYPE_MESH_POINT:
430 rfilt |= AR5K_RX_FILTER_CONTROL |
431 AR5K_RX_FILTER_BEACON |
432 AR5K_RX_FILTER_PROBEREQ |
435 case NL80211_IFTYPE_AP:
436 case NL80211_IFTYPE_ADHOC:
437 rfilt |= AR5K_RX_FILTER_PROBEREQ |
438 AR5K_RX_FILTER_BEACON;
440 case NL80211_IFTYPE_STATION:
442 rfilt |= AR5K_RX_FILTER_BEACON;
447 iter_data.hw_macaddr = NULL;
448 iter_data.n_stas = 0;
449 iter_data.need_set_hw_addr = false;
450 ieee80211_iterate_active_interfaces_atomic(ah->hw, ath5k_vif_iter,
453 /* Set up RX Filter */
454 if (iter_data.n_stas > 1) {
455 /* If you have multiple STA interfaces connected to
456 * different APs, ARPs are not received (most of the time?)
457 * Enabling PROMISC appears to fix that problem.
459 rfilt |= AR5K_RX_FILTER_PROM;
463 ath5k_hw_set_rx_filter(ah, rfilt);
465 /* Set multicast bits */
466 ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]);
467 /* Set the cached hw filter flags, this will later actually
469 ah->filter_flags = rfilt;
471 mutex_unlock(&ah->lock);
476 ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
477 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
478 struct ieee80211_key_conf *key)
480 struct ath5k_hw *ah = hw->priv;
481 struct ath_common *common = ath5k_hw_common(ah);
484 if (ath5k_modparam_nohwcrypt)
487 switch (key->cipher) {
488 case WLAN_CIPHER_SUITE_WEP40:
489 case WLAN_CIPHER_SUITE_WEP104:
490 case WLAN_CIPHER_SUITE_TKIP:
492 case WLAN_CIPHER_SUITE_CCMP:
493 if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM)
501 mutex_lock(&ah->lock);
505 ret = ath_key_config(common, vif, sta, key);
507 key->hw_key_idx = ret;
508 /* push IV and Michael MIC generation to stack */
509 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
510 if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
511 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
512 if (key->cipher == WLAN_CIPHER_SUITE_CCMP)
513 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
518 ath_key_delete(common, key);
525 mutex_unlock(&ah->lock);
531 ath5k_sw_scan_start(struct ieee80211_hw *hw)
533 struct ath5k_hw *ah = hw->priv;
535 ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN);
540 ath5k_sw_scan_complete(struct ieee80211_hw *hw)
542 struct ath5k_hw *ah = hw->priv;
543 ath5k_hw_set_ledstate(ah, ah->assoc ?
544 AR5K_LED_ASSOC : AR5K_LED_INIT);
549 ath5k_get_stats(struct ieee80211_hw *hw,
550 struct ieee80211_low_level_stats *stats)
552 struct ath5k_hw *ah = hw->priv;
555 ath5k_hw_update_mib_counters(ah);
557 stats->dot11ACKFailureCount = ah->stats.ack_fail;
558 stats->dot11RTSFailureCount = ah->stats.rts_fail;
559 stats->dot11RTSSuccessCount = ah->stats.rts_ok;
560 stats->dot11FCSErrorCount = ah->stats.fcs_error;
567 ath5k_conf_tx(struct ieee80211_hw *hw, u16 queue,
568 const struct ieee80211_tx_queue_params *params)
570 struct ath5k_hw *ah = hw->priv;
571 struct ath5k_txq_info qi;
574 if (queue >= ah->ah_capabilities.cap_queues.q_tx_num)
577 mutex_lock(&ah->lock);
579 ath5k_hw_get_tx_queueprops(ah, queue, &qi);
581 qi.tqi_aifs = params->aifs;
582 qi.tqi_cw_min = params->cw_min;
583 qi.tqi_cw_max = params->cw_max;
584 qi.tqi_burst_time = params->txop;
586 ATH5K_DBG(ah, ATH5K_DEBUG_ANY,
587 "Configure tx [queue %d], "
588 "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
589 queue, params->aifs, params->cw_min,
590 params->cw_max, params->txop);
592 if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) {
594 "Unable to update hardware queue %u!\n", queue);
597 ath5k_hw_reset_tx_queue(ah, queue);
599 mutex_unlock(&ah->lock);
606 ath5k_get_tsf(struct ieee80211_hw *hw)
608 struct ath5k_hw *ah = hw->priv;
610 return ath5k_hw_get_tsf64(ah);
615 ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
617 struct ath5k_hw *ah = hw->priv;
619 ath5k_hw_set_tsf64(ah, tsf);
624 ath5k_reset_tsf(struct ieee80211_hw *hw)
626 struct ath5k_hw *ah = hw->priv;
629 * in IBSS mode we need to update the beacon timers too.
630 * this will also reset the TSF if we call it with 0
632 if (ah->opmode == NL80211_IFTYPE_ADHOC)
633 ath5k_beacon_update_timers(ah, 0);
635 ath5k_hw_reset_tsf(ah);
640 ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey)
642 struct ath5k_hw *ah = hw->priv;
643 struct ieee80211_conf *conf = &hw->conf;
644 struct ath_common *common = ath5k_hw_common(ah);
645 struct ath_cycle_counters *cc = &common->cc_survey;
646 unsigned int div = common->clockrate * 1000;
651 spin_lock_bh(&common->cc_lock);
652 ath_hw_cycle_counters_update(common);
653 if (cc->cycles > 0) {
654 ah->survey.channel_time += cc->cycles / div;
655 ah->survey.channel_time_busy += cc->rx_busy / div;
656 ah->survey.channel_time_rx += cc->rx_frame / div;
657 ah->survey.channel_time_tx += cc->tx_frame / div;
659 memset(cc, 0, sizeof(*cc));
660 spin_unlock_bh(&common->cc_lock);
662 memcpy(survey, &ah->survey, sizeof(*survey));
664 survey->channel = conf->channel;
665 survey->noise = ah->ah_noise_floor;
666 survey->filled = SURVEY_INFO_NOISE_DBM |
667 SURVEY_INFO_CHANNEL_TIME |
668 SURVEY_INFO_CHANNEL_TIME_BUSY |
669 SURVEY_INFO_CHANNEL_TIME_RX |
670 SURVEY_INFO_CHANNEL_TIME_TX;
677 * ath5k_set_coverage_class - Set IEEE 802.11 coverage class
679 * @hw: struct ieee80211_hw pointer
680 * @coverage_class: IEEE 802.11 coverage class number
682 * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given
683 * coverage class. The values are persistent, they are restored after device
687 ath5k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
689 struct ath5k_hw *ah = hw->priv;
691 mutex_lock(&ah->lock);
692 ath5k_hw_set_coverage_class(ah, coverage_class);
693 mutex_unlock(&ah->lock);
698 ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
700 struct ath5k_hw *ah = hw->priv;
702 if (tx_ant == 1 && rx_ant == 1)
703 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A);
704 else if (tx_ant == 2 && rx_ant == 2)
705 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B);
706 else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3)
707 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
715 ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
717 struct ath5k_hw *ah = hw->priv;
719 switch (ah->ah_ant_mode) {
720 case AR5K_ANTMODE_FIXED_A:
721 *tx_ant = 1; *rx_ant = 1; break;
722 case AR5K_ANTMODE_FIXED_B:
723 *tx_ant = 2; *rx_ant = 2; break;
724 case AR5K_ANTMODE_DEFAULT:
725 *tx_ant = 3; *rx_ant = 3; break;
731 static void ath5k_get_ringparam(struct ieee80211_hw *hw,
732 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
734 struct ath5k_hw *ah = hw->priv;
736 *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max;
738 *tx_max = ATH5K_TXQ_LEN_MAX;
739 *rx = *rx_max = ATH_RXBUF;
743 static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx)
745 struct ath5k_hw *ah = hw->priv;
748 /* only support setting tx ring size for now */
752 /* restrict tx ring size min/max */
753 if (!tx || tx > ATH5K_TXQ_LEN_MAX)
756 for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) {
757 if (!ah->txqs[qnum].setup)
759 if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN ||
760 ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX)
763 ah->txqs[qnum].txq_max = tx;
764 if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max)
765 ieee80211_stop_queue(hw, ah->txqs[qnum].qnum);
772 const struct ieee80211_ops ath5k_hw_ops = {
774 .start = ath5k_start,
776 .add_interface = ath5k_add_interface,
777 /* .change_interface = not implemented */
778 .remove_interface = ath5k_remove_interface,
779 .config = ath5k_config,
780 .bss_info_changed = ath5k_bss_info_changed,
781 .prepare_multicast = ath5k_prepare_multicast,
782 .configure_filter = ath5k_configure_filter,
783 /* .set_tim = not implemented */
784 .set_key = ath5k_set_key,
785 /* .update_tkip_key = not implemented */
786 /* .hw_scan = not implemented */
787 .sw_scan_start = ath5k_sw_scan_start,
788 .sw_scan_complete = ath5k_sw_scan_complete,
789 .get_stats = ath5k_get_stats,
790 /* .get_tkip_seq = not implemented */
791 /* .set_frag_threshold = not implemented */
792 /* .set_rts_threshold = not implemented */
793 /* .sta_add = not implemented */
794 /* .sta_remove = not implemented */
795 /* .sta_notify = not implemented */
796 .conf_tx = ath5k_conf_tx,
797 .get_tsf = ath5k_get_tsf,
798 .set_tsf = ath5k_set_tsf,
799 .reset_tsf = ath5k_reset_tsf,
800 /* .tx_last_beacon = not implemented */
801 /* .ampdu_action = not needed */
802 .get_survey = ath5k_get_survey,
803 .set_coverage_class = ath5k_set_coverage_class,
804 /* .rfkill_poll = not implemented */
805 /* .flush = not implemented */
806 /* .channel_switch = not implemented */
807 /* .napi_poll = not implemented */
808 .set_antenna = ath5k_set_antenna,
809 .get_antenna = ath5k_get_antenna,
810 .set_ringparam = ath5k_set_ringparam,
811 .get_ringparam = ath5k_get_ringparam,