/*- * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting * Copyright (c) 2004-2005 Atheros Communications, Inc. * Copyright (c) 2006 Devicescape Software, Inc. * Copyright (c) 2007 Jiri Slaby * Copyright (c) 2007 Luis R. Rodriguez * Copyright (c) 2010 Bruno Randolf * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGES. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include "ath5k.h" #include "base.h" #include "reg.h" /********************\ * Mac80211 functions * \********************/ static void ath5k_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { struct ath5k_hw *ah = hw->priv; u16 qnum = skb_get_queue_mapping(skb); if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { ieee80211_free_txskb(hw, skb); return; } ath5k_tx_queue(hw, skb, &ah->txqs[qnum], control); } static int ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ath5k_hw *ah = hw->priv; int ret; struct ath5k_vif *avf = (void *)vif->drv_priv; mutex_lock(&ah->lock); if ((vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { ret = -ELNRNG; goto end; } /* Don't allow other interfaces if one ad-hoc is configured. * TODO: Fix the problems with ad-hoc and multiple other interfaces. * We would need to operate the HW in ad-hoc mode to allow TSF updates * for the IBSS, but this breaks with additional AP or STA interfaces * at the moment. */ if (ah->num_adhoc_vifs || (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); ret = -ELNRNG; goto end; } switch (vif->type) { case NL80211_IFTYPE_AP: case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: avf->opmode = vif->type; break; default: ret = -EOPNOTSUPP; goto end; } ah->nvifs++; ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); /* Assign the vap/adhoc to a beacon xmit slot. */ if ((avf->opmode == NL80211_IFTYPE_AP) || (avf->opmode == NL80211_IFTYPE_ADHOC) || (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { int slot; WARN_ON(list_empty(&ah->bcbuf)); avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, list); list_del(&avf->bbuf->list); avf->bslot = 0; for (slot = 0; slot < ATH_BCBUF; slot++) { if (!ah->bslot[slot]) { avf->bslot = slot; break; } } BUG_ON(ah->bslot[avf->bslot] != NULL); ah->bslot[avf->bslot] = vif; if (avf->opmode == NL80211_IFTYPE_AP) ah->num_ap_vifs++; else if (avf->opmode == NL80211_IFTYPE_ADHOC) ah->num_adhoc_vifs++; else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) ah->num_mesh_vifs++; } /* Any MAC address is fine, all others are included through the * filter. */ ath5k_hw_set_lladdr(ah, vif->addr); ath5k_update_bssid_mask_and_opmode(ah, vif); ret = 0; end: mutex_unlock(&ah->lock); return ret; } static void ath5k_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ath5k_hw *ah = hw->priv; struct ath5k_vif *avf = (void *)vif->drv_priv; unsigned int i; mutex_lock(&ah->lock); ah->nvifs--; if (avf->bbuf) { ath5k_txbuf_free_skb(ah, avf->bbuf); list_add_tail(&avf->bbuf->list, &ah->bcbuf); for (i = 0; i < ATH_BCBUF; i++) { if (ah->bslot[i] == vif) { ah->bslot[i] = NULL; break; } } avf->bbuf = NULL; } if (avf->opmode == NL80211_IFTYPE_AP) ah->num_ap_vifs--; else if (avf->opmode == NL80211_IFTYPE_ADHOC) ah->num_adhoc_vifs--; else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) ah->num_mesh_vifs--; ath5k_update_bssid_mask_and_opmode(ah, NULL); mutex_unlock(&ah->lock); } /* * TODO: Phy disable/diversity etc */ static int ath5k_config(struct ieee80211_hw *hw, u32 changed) { struct ath5k_hw *ah = hw->priv; struct ieee80211_conf *conf = &hw->conf; int ret = 0; int i; mutex_lock(&ah->lock); if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { ret = ath5k_chan_set(ah, &conf->chandef); if (ret < 0) goto unlock; } if ((changed & IEEE80211_CONF_CHANGE_POWER) && (ah->ah_txpower.txp_requested != conf->power_level)) { ah->ah_txpower.txp_requested = conf->power_level; /* Half dB steps */ ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); } if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { ah->ah_retry_long = conf->long_frame_max_tx_count; ah->ah_retry_short = conf->short_frame_max_tx_count; for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) ath5k_hw_set_tx_retry_limits(ah, i); } /* TODO: * 1) Move this on config_interface and handle each case * separately eg. when we have only one STA vif, use * AR5K_ANTMODE_SINGLE_AP * * 2) Allow the user to change antenna mode eg. when only * one antenna is present * * 3) Allow the user to set default/tx antenna when possible * * 4) Default mode should handle 90% of the cases, together * with fixed a/b and single AP modes we should be able to * handle 99%. Sectored modes are extreme cases and i still * haven't found a usage for them. If we decide to support them, * then we must allow the user to set how many tx antennas we * have available */ ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); unlock: mutex_unlock(&ah->lock); return ret; } static void ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { struct ath5k_vif *avf = (void *)vif->drv_priv; struct ath5k_hw *ah = hw->priv; struct ath_common *common = ath5k_hw_common(ah); mutex_lock(&ah->lock); if (changes & BSS_CHANGED_BSSID) { /* Cache for later use during resets */ memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); common->curaid = 0; ath5k_hw_set_bssid(ah); mmiowb(); } if (changes & BSS_CHANGED_BEACON_INT) ah->bintval = bss_conf->beacon_int; if (changes & BSS_CHANGED_ERP_SLOT) { int slot_time; ah->ah_short_slot = bss_conf->use_short_slot; slot_time = ath5k_hw_get_default_slottime(ah) + 3 * ah->ah_coverage_class; ath5k_hw_set_ifs_intervals(ah, slot_time); } if (changes & BSS_CHANGED_ASSOC) { avf->assoc = bss_conf->assoc; if (bss_conf->assoc) ah->assoc = bss_conf->assoc; else ah->assoc = ath5k_any_vif_assoc(ah); if (ah->opmode == NL80211_IFTYPE_STATION) ath5k_set_beacon_filter(hw, ah->assoc); ath5k_hw_set_ledstate(ah, ah->assoc ? AR5K_LED_ASSOC : AR5K_LED_INIT); if (bss_conf->assoc) { ATH5K_DBG(ah, ATH5K_DEBUG_ANY, "Bss Info ASSOC %d, bssid: %pM\n", bss_conf->aid, common->curbssid); common->curaid = bss_conf->aid; ath5k_hw_set_bssid(ah); /* Once ANI is available you would start it here */ } } if (changes & BSS_CHANGED_BEACON) { spin_lock_bh(&ah->block); ath5k_beacon_update(hw, vif); spin_unlock_bh(&ah->block); } if (changes & BSS_CHANGED_BEACON_ENABLED) ah->enable_beacon = bss_conf->enable_beacon; if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON_INT)) ath5k_beacon_config(ah); mutex_unlock(&ah->lock); } static u64 ath5k_prepare_multicast(struct ieee80211_hw *hw, struct netdev_hw_addr_list *mc_list) { u32 mfilt[2], val; u8 pos; struct netdev_hw_addr *ha; mfilt[0] = 0; mfilt[1] = 0; netdev_hw_addr_list_for_each(ha, mc_list) { /* calculate XOR of eight 6-bit values */ val = get_unaligned_le32(ha->addr + 0); pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; val = get_unaligned_le32(ha->addr + 3); pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; pos &= 0x3f; mfilt[pos / 32] |= (1 << (pos % 32)); /* XXX: we might be able to just do this instead, * but not sure, needs testing, if we do use this we'd * need to inform below not to reset the mcast */ /* ath5k_hw_set_mcast_filterindex(ah, * ha->addr[5]); */ } return ((u64)(mfilt[1]) << 32) | mfilt[0]; } /* * o always accept unicast, broadcast, and multicast traffic * o multicast traffic for all BSSIDs will be enabled if mac80211 * says it should be * o maintain current state of phy ofdm or phy cck error reception. * If the hardware detects any of these type of errors then * ath5k_hw_get_rx_filter() will pass to us the respective * hardware filters to be able to receive these type of frames. * o probe request frames are accepted only when operating in * hostap, adhoc, or monitor modes * o enable promiscuous mode according to the interface state * o accept beacons: * - when operating in adhoc mode so the 802.11 layer creates * node table entries for peers, * - when operating in station mode for collecting rssi data when * the station is otherwise quiet, or * - when scanning */ static void ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *new_flags, u64 multicast) { #define SUPPORTED_FIF_FLAGS \ (FIF_ALLMULTI | FIF_FCSFAIL | \ FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ FIF_BCN_PRBRESP_PROMISC) struct ath5k_hw *ah = hw->priv; u32 mfilt[2], rfilt; struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ mutex_lock(&ah->lock); mfilt[0] = multicast; mfilt[1] = multicast >> 32; /* Only deal with supported flags */ changed_flags &= SUPPORTED_FIF_FLAGS; *new_flags &= SUPPORTED_FIF_FLAGS; /* If HW detects any phy or radar errors, leave those filters on. * Also, always enable Unicast, Broadcasts and Multicast * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | AR5K_RX_FILTER_MCAST); /* Note, AR5K_RX_FILTER_MCAST is already enabled */ if (*new_flags & FIF_ALLMULTI) { mfilt[0] = ~0; mfilt[1] = ~0; } /* This is the best we can do */ if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) rfilt |= AR5K_RX_FILTER_PHYERR; /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons * and probes for any BSSID */ if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) rfilt |= AR5K_RX_FILTER_BEACON; /* FIF_CONTROL doc says we should only pass on control frames for this * station. This needs testing. I believe right now this * enables *all* control frames, which is OK.. but * but we should see if we can improve on granularity */ if (*new_flags & FIF_CONTROL) rfilt |= AR5K_RX_FILTER_CONTROL; /* Additional settings per mode -- this is per ath5k */ /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ switch (ah->opmode) { case NL80211_IFTYPE_MESH_POINT: rfilt |= AR5K_RX_FILTER_CONTROL | AR5K_RX_FILTER_BEACON | AR5K_RX_FILTER_PROBEREQ | AR5K_RX_FILTER_PROM; break; case NL80211_IFTYPE_AP: case NL80211_IFTYPE_ADHOC: rfilt |= AR5K_RX_FILTER_PROBEREQ | AR5K_RX_FILTER_BEACON; break; case NL80211_IFTYPE_STATION: if (ah->assoc) rfilt |= AR5K_RX_FILTER_BEACON; default: break; } iter_data.hw_macaddr = NULL; iter_data.n_stas = 0; iter_data.need_set_hw_addr = false; ieee80211_iterate_active_interfaces_atomic( ah->hw, IEEE80211_IFACE_ITER_RESUME_ALL, ath5k_vif_iter, &iter_data); /* Set up RX Filter */ if (iter_data.n_stas > 1) { /* If you have multiple STA interfaces connected to * different APs, ARPs are not received (most of the time?) * Enabling PROMISC appears to fix that problem. */ rfilt |= AR5K_RX_FILTER_PROM; } /* Set filters */ ath5k_hw_set_rx_filter(ah, rfilt); /* Set multicast bits */ ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); /* Set the cached hw filter flags, this will later actually * be set in HW */ ah->filter_flags = rfilt; /* Store current FIF filter flags */ ah->fif_filter_flags = *new_flags; mutex_unlock(&ah->lock); } static int ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct ath5k_hw *ah = hw->priv; struct ath_common *common = ath5k_hw_common(ah); int ret = 0; if (ath5k_modparam_nohwcrypt) return -EOPNOTSUPP; if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) return -EOPNOTSUPP; if (vif->type == NL80211_IFTYPE_ADHOC && (key->cipher == WLAN_CIPHER_SUITE_TKIP || key->cipher == WLAN_CIPHER_SUITE_CCMP) && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { /* don't program group keys when using IBSS_RSN */ return -EOPNOTSUPP; } switch (key->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_WEP104: case WLAN_CIPHER_SUITE_TKIP: break; case WLAN_CIPHER_SUITE_CCMP: if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) break; return -EOPNOTSUPP; default: WARN_ON(1); return -EINVAL; } mutex_lock(&ah->lock); switch (cmd) { case SET_KEY: ret = ath_key_config(common, vif, sta, key); if (ret >= 0) { key->hw_key_idx = ret; /* push IV and Michael MIC generation to stack */ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; if (key->cipher == WLAN_CIPHER_SUITE_TKIP) key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; if (key->cipher == WLAN_CIPHER_SUITE_CCMP) key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; ret = 0; } break; case DISABLE_KEY: ath_key_delete(common, key); break; default: ret = -EINVAL; } mmiowb(); mutex_unlock(&ah->lock); return ret; } static void ath5k_sw_scan_start(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const u8 *mac_addr) { struct ath5k_hw *ah = hw->priv; if (!ah->assoc) ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); } static void ath5k_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ath5k_hw *ah = hw->priv; ath5k_hw_set_ledstate(ah, ah->assoc ? AR5K_LED_ASSOC : AR5K_LED_INIT); } static int ath5k_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats) { struct ath5k_hw *ah = hw->priv; /* Force update */ ath5k_hw_update_mib_counters(ah); stats->dot11ACKFailureCount = ah->stats.ack_fail; stats->dot11RTSFailureCount = ah->stats.rts_fail; stats->dot11RTSSuccessCount = ah->stats.rts_ok; stats->dot11FCSErrorCount = ah->stats.fcs_error; return 0; } static int ath5k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params) { struct ath5k_hw *ah = hw->priv; struct ath5k_txq_info qi; int ret = 0; if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) return 0; mutex_lock(&ah->lock); ath5k_hw_get_tx_queueprops(ah, queue, &qi); qi.tqi_aifs = params->aifs; qi.tqi_cw_min = params->cw_min; qi.tqi_cw_max = params->cw_max; qi.tqi_burst_time = params->txop * 32; ATH5K_DBG(ah, ATH5K_DEBUG_ANY, "Configure tx [queue %d], " "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", queue, params->aifs, params->cw_min, params->cw_max, params->txop); if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { ATH5K_ERR(ah, "Unable to update hardware queue %u!\n", queue); ret = -EIO; } else ath5k_hw_reset_tx_queue(ah, queue); mutex_unlock(&ah->lock); return ret; } static u64 ath5k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ath5k_hw *ah = hw->priv; return ath5k_hw_get_tsf64(ah); } static void ath5k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) { struct ath5k_hw *ah = hw->priv; ath5k_hw_set_tsf64(ah, tsf); } static void ath5k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct ath5k_hw *ah = hw->priv; /* * in IBSS mode we need to update the beacon timers too. * this will also reset the TSF if we call it with 0 */ if (ah->opmode == NL80211_IFTYPE_ADHOC) ath5k_beacon_update_timers(ah, 0); else ath5k_hw_reset_tsf(ah); } static int ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) { struct ath5k_hw *ah = hw->priv; struct ieee80211_conf *conf = &hw->conf; struct ath_common *common = ath5k_hw_common(ah); struct ath_cycle_counters *cc = &common->cc_survey; unsigned int div = common->clockrate * 1000; if (idx != 0) return -ENOENT; spin_lock_bh(&common->cc_lock); ath_hw_cycle_counters_update(common); if (cc->cycles > 0) { ah->survey.time += cc->cycles / div; ah->survey.time_busy += cc->rx_busy / div; ah->survey.time_rx += cc->rx_frame / div; ah->survey.time_tx += cc->tx_frame / div; } memset(cc, 0, sizeof(*cc)); spin_unlock_bh(&common->cc_lock); memcpy(survey, &ah->survey, sizeof(*survey)); survey->channel = conf->chandef.chan; survey->noise = ah->ah_noise_floor; survey->filled = SURVEY_INFO_NOISE_DBM | SURVEY_INFO_IN_USE | SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY | SURVEY_INFO_TIME_RX | SURVEY_INFO_TIME_TX; return 0; } /** * ath5k_set_coverage_class - Set IEEE 802.11 coverage class * * @hw: struct ieee80211_hw pointer * @coverage_class: IEEE 802.11 coverage class number * * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given * coverage class. The values are persistent, they are restored after device * reset. */ static void ath5k_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class) { struct ath5k_hw *ah = hw->priv; mutex_lock(&ah->lock); ath5k_hw_set_coverage_class(ah, coverage_class); mutex_unlock(&ah->lock); } static int ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) { struct ath5k_hw *ah = hw->priv; if (tx_ant == 1 && rx_ant == 1) ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); else if (tx_ant == 2 && rx_ant == 2) ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); else return -EINVAL; return 0; } static int ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) { struct ath5k_hw *ah = hw->priv; switch (ah->ah_ant_mode) { case AR5K_ANTMODE_FIXED_A: *tx_ant = 1; *rx_ant = 1; break; case AR5K_ANTMODE_FIXED_B: *tx_ant = 2; *rx_ant = 2; break; case AR5K_ANTMODE_DEFAULT: *tx_ant = 3; *rx_ant = 3; break; } return 0; } static void ath5k_get_ringparam(struct ieee80211_hw *hw, u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) { struct ath5k_hw *ah = hw->priv; *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; *tx_max = ATH5K_TXQ_LEN_MAX; *rx = *rx_max = ATH_RXBUF; } static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) { struct ath5k_hw *ah = hw->priv; u16 qnum; /* only support setting tx ring size for now */ if (rx != ATH_RXBUF) return -EINVAL; /* restrict tx ring size min/max */ if (!tx || tx > ATH5K_TXQ_LEN_MAX) return -EINVAL; for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { if (!ah->txqs[qnum].setup) continue; if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) continue; ah->txqs[qnum].txq_max = tx; if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); } return 0; } const struct ieee80211_ops ath5k_hw_ops = { .tx = ath5k_tx, .start = ath5k_start, .stop = ath5k_stop, .add_interface = ath5k_add_interface, /* .change_interface = not implemented */ .remove_interface = ath5k_remove_interface, .config = ath5k_config, .bss_info_changed = ath5k_bss_info_changed, .prepare_multicast = ath5k_prepare_multicast, .configure_filter = ath5k_configure_filter, /* .set_tim = not implemented */ .set_key = ath5k_set_key, /* .update_tkip_key = not implemented */ /* .hw_scan = not implemented */ .sw_scan_start = ath5k_sw_scan_start, .sw_scan_complete = ath5k_sw_scan_complete, .get_stats = ath5k_get_stats, /* .set_frag_threshold = not implemented */ /* .set_rts_threshold = not implemented */ /* .sta_add = not implemented */ /* .sta_remove = not implemented */ /* .sta_notify = not implemented */ .conf_tx = ath5k_conf_tx, .get_tsf = ath5k_get_tsf, .set_tsf = ath5k_set_tsf, .reset_tsf = ath5k_reset_tsf, /* .tx_last_beacon = not implemented */ /* .ampdu_action = not needed */ .get_survey = ath5k_get_survey, .set_coverage_class = ath5k_set_coverage_class, /* .rfkill_poll = not implemented */ /* .flush = not implemented */ /* .channel_switch = not implemented */ /* .napi_poll = not implemented */ .set_antenna = ath5k_set_antenna, .get_antenna = ath5k_get_antenna, .set_ringparam = ath5k_set_ringparam, .get_ringparam = ath5k_get_ringparam, };