tx.c revision 6f266e912c0733e77f63e9ad245db3c966b75942
1f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* 2f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This file is part of wl1271 3f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 4f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Copyright (C) 2009 Nokia Corporation 5f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 6f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Contact: Luciano Coelho <luciano.coelho@nokia.com> 7f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 8f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This program is free software; you can redistribute it and/or 9f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * modify it under the terms of the GNU General Public License 10f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * version 2 as published by the Free Software Foundation. 11f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 12f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * This program is distributed in the hope that it will be useful, but 13f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * WITHOUT ANY WARRANTY; without even the implied warranty of 14f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * General Public License for more details. 16f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 17f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * You should have received a copy of the GNU General Public License 18f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * along with this program; if not, write to the Free Software 19f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 02110-1301 USA 21f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho * 22f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho */ 23f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 24f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho#include <linux/kernel.h> 25f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho#include <linux/module.h> 26c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov#include <linux/etherdevice.h> 27f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 28c31be25a7144ebc9b7a22128909bac7654d4c46bLuciano Coelho#include "wlcore.h" 290f4e31222a2c0b93f25a87effd2033cb78c7a79cLuciano Coelho#include "debug.h" 3000d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "io.h" 3100d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "ps.h" 3200d201001bd4e8a46e3d03c970abcb72256c368bShahar Levi#include "tx.h" 3356d4f8f685c073c7ed7203b78c57f5d893d65102Arik Nemtsov#include "event.h" 34b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov#include "hw_ops.h" 35f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 3600782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho/* 3700782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho * TODO: this is here just for now, it must be removed when the data 3800782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho * operations are in place. 3900782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho */ 4000782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho#include "../wl12xx/reg.h" 4100782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho 42536129c8ad35de87ff2f864f205a54ac32bfebccEliad Pellerstatic int wl1271_set_default_wep_key(struct wl1271 *wl, 43536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct wl12xx_vif *wlvif, u8 id) 447f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov{ 457f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov int ret; 46536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); 477f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 487f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov if (is_ap) 49c690ec816f9fa2ab2b6200c5b79b6933acca49a4Eliad Peller ret = wl12xx_cmd_set_default_wep_key(wl, id, 50a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller wlvif->ap.bcast_hlid); 517f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov else 52154da67c7da14ffd8da292394f8cbc81cc5ea4e3Eliad Peller ret = wl12xx_cmd_set_default_wep_key(wl, id, wlvif->sta.hlid); 537f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 547f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov if (ret < 0) 557f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov return ret; 567f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 577f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov wl1271_debug(DEBUG_CRYPT, "default wep key idx: %d", (int)id); 587f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov return 0; 597f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov} 607f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 6125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yarivstatic int wl1271_alloc_tx_id(struct wl1271 *wl, struct sk_buff *skb) 62f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 6325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv int id; 6425eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv 6572b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov id = find_first_zero_bit(wl->tx_frames_map, wl->num_tx_desc); 6672b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (id >= wl->num_tx_desc) 6725eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv return -EBUSY; 6825eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv 6925eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv __set_bit(id, wl->tx_frames_map); 7025eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames[id] = skb; 7125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames_cnt++; 7225eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv return id; 7325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv} 74f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 7525eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yarivstatic void wl1271_free_tx_id(struct wl1271 *wl, int id) 7625eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv{ 7725eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv if (__test_and_clear_bit(id, wl->tx_frames_map)) { 7872b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (unlikely(wl->tx_frames_cnt == wl->num_tx_desc)) 79ef2e3004855e90d2919105e4a91d7df6ab9845a9Ido Yariv clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 80ef2e3004855e90d2919105e4a91d7df6ab9845a9Ido Yariv 8125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames[id] = NULL; 8225eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl->tx_frames_cnt--; 8325eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv } 84f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 85f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 8699a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsovstatic void wl1271_tx_ap_update_inconnection_sta(struct wl1271 *wl, 8799a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov struct sk_buff *skb) 8899a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov{ 8999a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov struct ieee80211_hdr *hdr; 9099a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 9199a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov /* 9299a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * add the station to the known list before transmitting the 9399a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * authentication response. this way it won't get de-authed by FW 9499a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov * when transmitting too soon. 9599a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov */ 9699a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov hdr = (struct ieee80211_hdr *)(skb->data + 9799a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov sizeof(struct wl1271_tx_hw_descr)); 9899a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov if (ieee80211_is_auth(hdr->frame_control)) 9999a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov wl1271_acx_set_inconnection_sta(wl, hdr->addr1); 10099a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov} 10199a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 102c7ffb902cca655e4d6bdda4156407008573bb214Eliad Pellerstatic void wl1271_tx_regulate_link(struct wl1271 *wl, 103c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller struct wl12xx_vif *wlvif, 104c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller u8 hlid) 105b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov{ 106da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov bool fw_ps, single_sta; 1079b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov u8 tx_pkts; 108b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 109c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller if (WARN_ON(!test_bit(hlid, wlvif->links_map))) 110b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov return; 111b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 112b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov fw_ps = test_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map); 1139b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov tx_pkts = wl->links[hlid].allocated_pkts; 114da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov single_sta = (wl->active_sta_count == 1); 115b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 116b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov /* 117b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov * if in FW PS and there is enough data in FW we can put the link 118b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov * into high-level PS and clean out its TX queues. 119da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov * Make an exception if this is the only connected station. In this 120da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov * case FW-memory congestion is not a problem. 121b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov */ 122da03209eaca9302e110925f84a515e03062aaa9eArik Nemtsov if (!single_sta && fw_ps && tx_pkts >= WL1271_PS_STA_MAX_PACKETS) 1236e8cd3310491b10db20d0f7eaf5713b05fa7b753Eliad Peller wl12xx_ps_link_start(wl, wlvif, hlid, true); 124b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov} 125b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov 126f8e0af6b8732b47c2531a280753d29a4ca2d114bArik Nemtsovbool wl12xx_is_dummy_packet(struct wl1271 *wl, struct sk_buff *skb) 127f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller{ 128f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->dummy_packet == skb; 129f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller} 130f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 131a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Pelleru8 wl12xx_tx_get_hlid_ap(struct wl1271 *wl, struct wl12xx_vif *wlvif, 132a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller struct sk_buff *skb) 133a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 134a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct ieee80211_tx_info *control = IEEE80211_SKB_CB(skb); 135a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 136a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov if (control->control.sta) { 137a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct wl1271_station *wl_sta; 138a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 139a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl_sta = (struct wl1271_station *) 140a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov control->control.sta->drv_priv; 141a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov return wl_sta->hlid; 142a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } else { 143a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct ieee80211_hdr *hdr; 144a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 14553d40d0b863e22b697f8d85e1f95cb6f9d2d95b1Eliad Peller if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) 146f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->system_hlid; 147f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 148a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov hdr = (struct ieee80211_hdr *)skb->data; 149a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov if (ieee80211_is_mgmt(hdr->frame_control)) 150a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller return wlvif->ap.global_hlid; 151a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov else 152a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller return wlvif->ap.bcast_hlid; 153a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 154a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 155a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 156d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pelleru8 wl12xx_tx_get_hlid(struct wl1271 *wl, struct wl12xx_vif *wlvif, 157d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb) 158f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller{ 159df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; 160df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller 1610f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!wlvif || wl12xx_is_dummy_packet(wl, skb)) 162f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller return wl->system_hlid; 163f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 164536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller if (wlvif->bss_type == BSS_TYPE_AP_BSS) 165a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller return wl12xx_tx_get_hlid_ap(wl, wlvif, skb); 166f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 167ba8447f64159927baf673d827e404605471d8f68Eliad Peller if ((test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) || 168eee514e3d6cecc7abdf1b27734169004fefb0941Eliad Peller test_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags)) && 169df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller !ieee80211_is_auth(hdr->frame_control) && 170df4c849f4608e8962f019fea6021ebd602a11641Eliad Peller !ieee80211_is_assoc_req(hdr->frame_control)) 171154da67c7da14ffd8da292394f8cbc81cc5ea4e3Eliad Peller return wlvif->sta.hlid; 172f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller else 173afaf8bdb2b08bbf493b03757243821df72b26c53Eliad Peller return wlvif->dev_hlid; 174f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller} 175f4df1bd525e027aa1975e00f87a420aec7bef4e0Eliad Peller 176b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsovunsigned int wlcore_calc_packet_alignment(struct wl1271 *wl, 177b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov unsigned int packet_length) 1780da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv{ 1796f7dd16cb125468a5393861c22fbecfb52dd9653Luciano Coelho if (wl->quirks & WLCORE_QUIRK_NO_BLOCKSIZE_ALIGNMENT) 1800da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv return ALIGN(packet_length, WL1271_TX_ALIGN_TO); 181ce39defb5c6312a89a0c7be48797d6fb8fe9abadLuciano Coelho else 182ce39defb5c6312a89a0c7be48797d6fb8fe9abadLuciano Coelho return ALIGN(packet_length, WL12XX_BUS_BLOCK_SIZE); 1830da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv} 184b3b4b4b812018a06221b6d7b88a5540fccae2940Arik NemtsovEXPORT_SYMBOL(wlcore_calc_packet_alignment); 1850da13da767cd568c1fe2a7b5b936e86e521b5ae7Ido Yariv 186a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic int wl1271_tx_allocate(struct wl1271 *wl, struct wl12xx_vif *wlvif, 187536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb, u32 extra, u32 buf_offset, 188536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller u8 hlid) 189f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 190f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_descr *desc; 191f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 total_len = skb->len + sizeof(struct wl1271_tx_hw_descr) + extra; 1925c9417f1656b0f415f4be5a7cd7195ecadd7dd1aJuuso Oikarinen u32 total_blocks; 193742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov int id, ret = -EBUSY, ac; 1943edab305dfd48415074a36f1cdd605dcae8463deArik Nemtsov u32 spare_blocks = wl->normal_tx_spare; 195a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller bool is_dummy = false; 196f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 197a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv if (buf_offset + total_len > WL1271_AGGR_BUFFER_SIZE) 1986c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv return -EAGAIN; 199a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv 200f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* allocate free identifier for the packet */ 20125eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv id = wl1271_alloc_tx_id(wl, skb); 202f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (id < 0) 203f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return id; 204f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 2053edab305dfd48415074a36f1cdd605dcae8463deArik Nemtsov if (unlikely(wl12xx_is_dummy_packet(wl, skb))) 206a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller is_dummy = true; 2073edab305dfd48415074a36f1cdd605dcae8463deArik Nemtsov else if (wlvif->is_gem) 2083edab305dfd48415074a36f1cdd605dcae8463deArik Nemtsov spare_blocks = wl->gem_tx_spare; 209e9eb8cbe77139470651c858b8b7a3d20d332cf47Guy Eilam 210b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov total_blocks = wlcore_hw_calc_tx_blocks(wl, total_len, spare_blocks); 21148a61477bdc04896bd96d259388a0c42a7019943Shahar Levi 212f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (total_blocks <= wl->tx_blocks_available) { 213f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc = (struct wl1271_tx_hw_descr *)skb_push( 214f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho skb, total_len - skb->len); 215f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 2164a3b97eea216135cd37e6d3a4a6c551c201a6615Arik Nemtsov wlcore_hw_set_tx_desc_blocks(wl, desc, total_blocks, 2174a3b97eea216135cd37e6d3a4a6c551c201a6615Arik Nemtsov spare_blocks); 218ae77eccf04f8c36769bdba334e1bbcc7bb9d3644Shahar Levi 219f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc->id = id; 220f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 221f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->tx_blocks_available -= total_blocks; 2227bb5d6ce9e6ebb3bb71915cb0224523d3c284b4fArik Nemtsov wl->tx_allocated_blocks += total_blocks; 223f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 22455df5afb13718cda49128fa5985556df91d07765Arik Nemtsov /* If the FW was empty before, arm the Tx watchdog */ 22555df5afb13718cda49128fa5985556df91d07765Arik Nemtsov if (wl->tx_allocated_blocks == total_blocks) 22655df5afb13718cda49128fa5985556df91d07765Arik Nemtsov wl12xx_rearm_tx_watchdog_locked(wl); 22755df5afb13718cda49128fa5985556df91d07765Arik Nemtsov 228742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 229742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov wl->tx_allocated_pkts[ac]++; 230bf54e301671a6ece6c94550294dc7faf14158cd3Arik Nemtsov 2310f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!is_dummy && wlvif && 2320f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller wlvif->bss_type == BSS_TYPE_AP_BSS && 233c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller test_bit(hlid, wlvif->ap.sta_hlid_map)) 2349b17f1b371c5aa5179b3e5392bc22132a3371da4Arik Nemtsov wl->links[hlid].allocated_pkts++; 23509039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov 236f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho ret = 0; 237f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 238f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_debug(DEBUG_TX, 239f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho "tx_allocate: size: %d, blocks: %d, id: %d", 240f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho total_len, total_blocks, id); 241781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } else { 24225eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl1271_free_tx_id(wl, id); 243781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 244f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 245f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 246f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 247f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 248a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic void wl1271_tx_fill_hdr(struct wl1271 *wl, struct wl12xx_vif *wlvif, 249536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb, u32 extra, 250536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct ieee80211_tx_info *control, u8 hlid) 251f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 252ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen struct timespec ts; 253f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_descr *desc; 2546f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov int ac, rate_idx; 255ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen s64 hosttime; 256cf00f379d82d170712150588accd2ebe316c2226John W. Linville u16 tx_attr = 0; 257f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller __le16 frame_control; 258f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller struct ieee80211_hdr *hdr; 259f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller u8 *frame_start; 260a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller bool is_dummy; 261f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 262f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho desc = (struct wl1271_tx_hw_descr *) skb->data; 263f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller frame_start = (u8 *)(desc + 1); 264f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller hdr = (struct ieee80211_hdr *)(frame_start + extra); 265f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller frame_control = hdr->frame_control; 266f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 2671e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* relocate space for security header */ 2681e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen if (extra) { 269f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller int hdrlen = ieee80211_hdrlen(frame_control); 270f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller memmove(frame_start, hdr, hdrlen); 2711e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen } 2721e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen 273f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* configure packet life time */ 274ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen getnstimeofday(&ts); 275ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen hosttime = (timespec_to_ns(&ts) >> 10); 276ac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23Juuso Oikarinen desc->start_time = cpu_to_le32(hosttime - wl->time_offset); 277c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 278a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller is_dummy = wl12xx_is_dummy_packet(wl, skb); 2790f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (is_dummy || !wlvif || wlvif->bss_type != BSS_TYPE_AP_BSS) 280c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU); 281c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov else 282c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov desc->life_time = cpu_to_le16(TX_HW_AP_MODE_PKT_LIFETIME_TU); 283f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 284db674d249c1fa20fd6731048f41646b3a2e8bdf5Eliad Peller /* queue */ 285c6999d831ab9ae5e368b20f3bc11b0ca9c17a7ecKalle Valo ac = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 286db674d249c1fa20fd6731048f41646b3a2e8bdf5Eliad Peller desc->tid = skb->priority; 287c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 288a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller if (is_dummy) { 289ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* 290ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * FW expects the dummy packet to have an invalid session id - 291ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * any session id that is different than the one set in the join 292ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi */ 29398b8625301e55bd3e4340f704edc378e4707e577Eliad Peller tx_attr = (SESSION_COUNTER_INVALID << 294ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi TX_HW_ATTR_OFST_SESSION_COUNTER) & 295ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi TX_HW_ATTR_SESSION_COUNTER; 296ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 297ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi tx_attr |= TX_HW_ATTR_TX_DUMMY_REQ; 2980f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller } else if (wlvif) { 299ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* configure the tx attributes */ 30098b8625301e55bd3e4340f704edc378e4707e577Eliad Peller tx_attr = wlvif->session_counter << 30198b8625301e55bd3e4340f704edc378e4707e577Eliad Peller TX_HW_ATTR_OFST_SESSION_COUNTER; 302ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 303ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 30479b122dc51797b650201f21360481a0450e9b7e4Eliad Peller desc->hlid = hlid; 3050f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (is_dummy || !wlvif) 306a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller rate_idx = 0; 307a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller else if (wlvif->bss_type != BSS_TYPE_AP_BSS) { 308c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov /* if the packets are destined for AP (have a STA entry) 309c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov send them with AP rate policies, otherwise use default 310c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov basic rates */ 3118a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller if (control->flags & IEEE80211_TX_CTL_NO_CCK_RATE) 3128a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller rate_idx = wlvif->sta.p2p_rate_idx; 3138a0f2ee37810aa4a4f46baf08b2ad587e138eb58Eliad Peller else if (control->control.sta) 314e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->sta.ap_rate_idx; 315c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov else 316e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->sta.basic_rate_idx; 317c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov } else { 318a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller if (hlid == wlvif->ap.global_hlid) 319e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.mgmt_rate_idx; 320a8ab39a4b588e8523be2fa75671bdc9612d3467aEliad Peller else if (hlid == wlvif->ap.bcast_hlid) 321e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.bcast_rate_idx; 322e51ae9be2e313b63a43f1f93578d9a71d38a77eaArik Nemtsov else 323e5a359f873f50cc123d5ca97637caa30fa095bb9Eliad Peller rate_idx = wlvif->ap.ucast_rate_idx[ac]; 324c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov } 325c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov 326c6c8a65de6d3aa8daa93beeac390f49a21d0be36Arik Nemtsov tx_attr |= rate_idx << TX_HW_ATTR_OFST_RATE_POLICY; 327d0f63b202146f3281800ee44823740c8bbf38f11Luciano Coelho 328f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller /* for WEP shared auth - no fw encryption is needed */ 329f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller if (ieee80211_is_auth(frame_control) && 330f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller ieee80211_has_protected(frame_control)) 331f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller tx_attr |= TX_HW_ATTR_HOST_ENCRYPT; 332f4f57943f265d80fe5f0fedf6964f8056e753cf3Eliad Peller 3336f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov desc->reserved = 0; 334d0f63b202146f3281800ee44823740c8bbf38f11Luciano Coelho desc->tx_attr = cpu_to_le16(tx_attr); 3356f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov 3366f266e912c0733e77f63e9ad245db3c966b75942Arik Nemtsov wlcore_hw_set_tx_desc_data_len(wl, desc, skb); 337f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 338f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 339f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* caller must hold wl->mutex */ 340a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic int wl1271_prepare_tx_frame(struct wl1271 *wl, struct wl12xx_vif *wlvif, 341a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller struct sk_buff *skb, u32 buf_offset) 342f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 343f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct ieee80211_tx_info *info; 344f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 extra = 0; 345f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int ret = 0; 346a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv u32 total_len; 34709039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov u8 hlid; 348536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller bool is_dummy; 349f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 350f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (!skb) 351f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return -EINVAL; 352f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 353f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info = IEEE80211_SKB_CB(skb); 354f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 355536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller /* TODO: handle dummy packets on multi-vifs */ 356536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller is_dummy = wl12xx_is_dummy_packet(wl, skb); 357536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller 358f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (info->control.hw_key && 35997359d1235eaf634fe706c9faa6e40181cc95fb8Johannes Berg info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) 3605ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller extra = WL1271_EXTRA_SPACE_TKIP; 361f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 362f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (info->control.hw_key) { 3637f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov bool is_wep; 3647f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov u8 idx = info->control.hw_key->hw_key_idx; 3657f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov u32 cipher = info->control.hw_key->cipher; 3667f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov 3677f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov is_wep = (cipher == WLAN_CIPHER_SUITE_WEP40) || 3687f179b468963564aa3faa5729fb3153c08b3d7c1Arik Nemtsov (cipher == WLAN_CIPHER_SUITE_WEP104); 369f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 370f75c753f3c77b758fa5ace90c15b2ea3b7a3d46dEliad Peller if (unlikely(is_wep && wlvif->default_key != idx)) { 371536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller ret = wl1271_set_default_wep_key(wl, wlvif, idx); 372f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (ret < 0) 373f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 374f75c753f3c77b758fa5ace90c15b2ea3b7a3d46dEliad Peller wlvif->default_key = idx; 375f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 376f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 377d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller hlid = wl12xx_tx_get_hlid(wl, wlvif, skb); 37879b122dc51797b650201f21360481a0450e9b7e4Eliad Peller if (hlid == WL12XX_INVALID_LINK_ID) { 379e0d62536d032db689adf9c8162a9d2caf4714f44Eliad Peller wl1271_error("invalid hlid. dropping skb 0x%p", skb); 38079b122dc51797b650201f21360481a0450e9b7e4Eliad Peller return -EINVAL; 38179b122dc51797b650201f21360481a0450e9b7e4Eliad Peller } 38209039f42a24084c10e7761ab28ef22932c62a46fArik Nemtsov 383a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller ret = wl1271_tx_allocate(wl, wlvif, skb, extra, buf_offset, hlid); 384f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (ret < 0) 385f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return ret; 386f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 387a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wl1271_tx_fill_hdr(wl, wlvif, skb, extra, info, hlid); 388fae2fd767e9d380ed0d05e4a5d6b1673e2c2d3dfArik Nemtsov 3890f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!is_dummy && wlvif && wlvif->bss_type == BSS_TYPE_AP_BSS) { 39099a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov wl1271_tx_ap_update_inconnection_sta(wl, skb); 391c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller wl1271_tx_regulate_link(wl, wlvif, hlid); 392b622d992c21a85ce590afe2c18977ed28b457e0eArik Nemtsov } 39399a2775d02a7accf4cc661a65c76fd7b379d1c7aArik Nemtsov 394a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv /* 39548a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * The length of each packet is stored in terms of 39648a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * words. Thus, we must pad the skb data to make sure its 39748a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * length is aligned. The number of padding bytes is computed 39848a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * and set in wl1271_tx_fill_hdr. 39948a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * In special cases, we want to align to a specific block size 40048a61477bdc04896bd96d259388a0c42a7019943Shahar Levi * (eg. for wl128x with SDIO we align to 256). 401a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv */ 402b3b4b4b812018a06221b6d7b88a5540fccae2940Arik Nemtsov total_len = wlcore_calc_packet_alignment(wl, skb->len); 40348a61477bdc04896bd96d259388a0c42a7019943Shahar Levi 404a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv memcpy(wl->aggr_buf + buf_offset, skb->data, skb->len); 405a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv memset(wl->aggr_buf + buf_offset + skb->len, 0, total_len - skb->len); 406f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 407990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv /* Revert side effects in the dummy packet skb, so it can be reused */ 408536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller if (is_dummy) 409990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 410990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 411a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv return total_len; 412f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 413f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 414af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Pelleru32 wl1271_tx_enabled_rates_get(struct wl1271 *wl, u32 rate_set, 415af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller enum ieee80211_band rate_band) 416830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen{ 417830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen struct ieee80211_supported_band *band; 418830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen u32 enabled_rates = 0; 419830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen int bit; 420830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 421af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller band = wl->hw->wiphy->bands[rate_band]; 422830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen for (bit = 0; bit < band->n_bitrates; bit++) { 423830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen if (rate_set & 0x1) 424830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen enabled_rates |= band->bitrates[bit].hw_value; 425830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen rate_set >>= 1; 426830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen } 427830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 42818357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi /* MCS rates indication are on bits 16 - 23 */ 42918357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi rate_set >>= HW_HT_RATES_OFFSET - band->n_bitrates; 43018357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi 43118357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi for (bit = 0; bit < 8; bit++) { 43218357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi if (rate_set & 0x1) 43318357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi enabled_rates |= (CONF_HW_BIT_RATE_MCS_0 << bit); 43418357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi rate_set >>= 1; 43518357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi } 43618357850b694ba3fa29363c7d86ccd8783f4a065Shahar Levi 437830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen return enabled_rates; 438830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen} 439830fb67b8e37fb03cf703b4e1217fe30ce32d579Juuso Oikarinen 440a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsovvoid wl1271_handle_tx_low_watermark(struct wl1271 *wl) 4412fe33e8cff354a3f320549544bffebbbab680145Ido Yariv{ 4422fe33e8cff354a3f320549544bffebbbab680145Ido Yariv unsigned long flags; 443708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov int i; 4442fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 445708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 446708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov if (test_bit(i, &wl->stopped_queues_map) && 447f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[i] <= WL1271_TX_QUEUE_LOW_WATERMARK) { 448708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov /* firmware buffer has space, restart queues */ 449708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 450708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov ieee80211_wake_queue(wl->hw, 451708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov wl1271_tx_get_mac80211_queue(i)); 452708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov clear_bit(i, &wl->stopped_queues_map); 453708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 454708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov } 4552fe33e8cff354a3f320549544bffebbbab680145Ido Yariv } 4562fe33e8cff354a3f320549544bffebbbab680145Ido Yariv} 4572fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 458742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsovstatic struct sk_buff_head *wl1271_select_queue(struct wl1271 *wl, 459742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov struct sk_buff_head *queues) 460742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov{ 461742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov int i, q = -1, ac; 462742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov u32 min_pkts = 0xffffffff; 463742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 464742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov /* 465742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * Find a non-empty ac where: 466742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 1. There are packets to transmit 467742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 2. The FW has the least allocated blocks 468742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * 469742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov * We prioritize the ACs according to VO>VI>BE>BK 470742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov */ 471742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 472742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov ac = wl1271_tx_get_queue(i); 473742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (!skb_queue_empty(&queues[ac]) && 474742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov (wl->tx_allocated_pkts[ac] < min_pkts)) { 475742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov q = ac; 476742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov min_pkts = wl->tx_allocated_pkts[q]; 477742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov } 478742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov } 479742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 480742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (q == -1) 481742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov return NULL; 482742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 483742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov return &queues[q]; 484742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov} 485742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 486d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic struct sk_buff *wl12xx_lnk_skb_dequeue(struct wl1271 *wl, 487d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct wl1271_link *lnk) 4886742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen{ 489d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb; 4906742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen unsigned long flags; 491742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov struct sk_buff_head *queue; 4926742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 493d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller queue = wl1271_select_queue(wl, lnk->tx_queue); 494742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov if (!queue) 495d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller return NULL; 496742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 497742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov skb = skb_dequeue(queue); 4986742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen if (skb) { 499f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 5006742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_lock_irqsave(&wl->wl_lock, flags); 5016246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 502f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]--; 5036742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_unlock_irqrestore(&wl->wl_lock, flags); 5046742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen } 5056742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 5066742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen return skb; 5076742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen} 5086742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 509d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic struct sk_buff *wl12xx_vif_skb_dequeue(struct wl1271 *wl, 510d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct wl12xx_vif *wlvif) 511a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 512a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct sk_buff *skb = NULL; 513a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov int i, h, start_hlid; 514a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 515a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* start from the link after the last one */ 5164438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller start_hlid = (wlvif->last_tx_hlid + 1) % WL12XX_MAX_LINKS; 517a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 518a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* dequeue according to AC, round robin on each link */ 519c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller for (i = 0; i < WL12XX_MAX_LINKS; i++) { 520c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller h = (start_hlid + i) % WL12XX_MAX_LINKS; 521a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 522742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov /* only consider connected stations */ 523c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller if (!test_bit(h, wlvif->links_map)) 524742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov continue; 525742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 526d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller skb = wl12xx_lnk_skb_dequeue(wl, &wl->links[h]); 527d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (!skb) 528742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov continue; 529742246f8bc16c3a1a556c68ca2fabca162d14c24Arik Nemtsov 530d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->last_tx_hlid = h; 531d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller break; 532a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 533a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 534d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (!skb) 5354438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller wlvif->last_tx_hlid = 0; 536a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 537a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov return skb; 538a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 539a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 540a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellerstatic struct sk_buff *wl1271_skb_dequeue(struct wl1271 *wl) 541a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 542990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv unsigned long flags; 543e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller struct wl12xx_vif *wlvif = wl->last_wlvif; 544990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv struct sk_buff *skb = NULL; 545990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 54649c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* continue from last wlvif (round robin) */ 547e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (wlvif) { 548e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl12xx_for_each_wlvif_continue(wl, wlvif) { 549e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller skb = wl12xx_vif_skb_dequeue(wl, wlvif); 550e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (skb) { 551e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl->last_wlvif = wlvif; 552e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller break; 553e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 554e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 555e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 556e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller 55749c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* dequeue from the system HLID before the restarting wlvif list */ 55849c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov if (!skb) 55949c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov skb = wl12xx_lnk_skb_dequeue(wl, &wl->links[wl->system_hlid]); 56049c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov 56149c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* do a new pass over the wlvif list */ 562e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (!skb) { 563e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl12xx_for_each_wlvif(wl, wlvif) { 564e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller skb = wl12xx_vif_skb_dequeue(wl, wlvif); 565e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller if (skb) { 566e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller wl->last_wlvif = wlvif; 567e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller break; 568e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 56949c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov 57049c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov /* 57149c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov * No need to continue after last_wlvif. The previous 57249c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov * pass should have found it. 57349c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov */ 57449c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov if (wlvif == wl->last_wlvif) 57549c9cd26445aa8bc8348c384c943b758c57c47a9Arik Nemtsov break; 576e4120df982c2051f3cfc02f6278798c5166a72f8Eliad Peller } 577a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller } 578a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller 579990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (!skb && 580990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv test_and_clear_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags)) { 581f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int q; 582f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov 583990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv skb = wl->dummy_packet; 584f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 585990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv spin_lock_irqsave(&wl->wl_lock, flags); 5866246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov WARN_ON_ONCE(wl->tx_queue_count[q] <= 0); 587f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]--; 588990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv spin_unlock_irqrestore(&wl->wl_lock, flags); 589990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv } 590990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv 591990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv return skb; 592a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 593a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 594d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellerstatic void wl1271_skb_queue_head(struct wl1271 *wl, struct wl12xx_vif *wlvif, 595536129c8ad35de87ff2f864f205a54ac32bfebccEliad Peller struct sk_buff *skb) 5966742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen{ 5976742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen unsigned long flags; 5986742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen int q = wl1271_tx_get_queue(skb_get_queue_mapping(skb)); 5996742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 600990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (wl12xx_is_dummy_packet(wl, skb)) { 601990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags); 602d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller } else { 603d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller u8 hlid = wl12xx_tx_get_hlid(wl, wlvif, skb); 604a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov skb_queue_head(&wl->links[hlid].tx_queue[q], skb); 605a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 606a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov /* make sure we dequeue the same packet next time */ 6074438aca9e16901d8d32a025ca27ad8284a117e09Eliad Peller wlvif->last_tx_hlid = (hlid + WL12XX_MAX_LINKS - 1) % 608d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller WL12XX_MAX_LINKS; 609a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 610a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 6116742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_lock_irqsave(&wl->wl_lock, flags); 612f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[q]++; 6136742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen spin_unlock_irqrestore(&wl->wl_lock, flags); 6146742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen} 6156742f554db14da94172da9eb1875a1aa944a827fJuuso Oikarinen 61677ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Pellerstatic bool wl1271_tx_is_data_present(struct sk_buff *skb) 61777ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller{ 61877ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); 61977ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller 62077ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller return ieee80211_is_data_present(hdr->frame_control); 62177ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller} 62277ddaa108f727b5ef3be004b952d2c3d3ffc48e5Eliad Peller 6239eb599e9c62dcfd4efece1936c385381b366b684Eliad Pellervoid wl12xx_rearm_rx_streaming(struct wl1271 *wl, unsigned long *active_hlids) 6249eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller{ 6259eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller struct wl12xx_vif *wlvif; 6269eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller u32 timeout; 6279eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller u8 hlid; 6289eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6299eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!wl->conf.rx_streaming.interval) 6309eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller return; 6319eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6329eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!wl->conf.rx_streaming.always && 6339eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)) 6349eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller return; 6359eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6369eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller timeout = wl->conf.rx_streaming.duration; 6379eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller wl12xx_for_each_wlvif_sta(wl, wlvif) { 6389eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller bool found = false; 6399eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller for_each_set_bit(hlid, active_hlids, WL12XX_MAX_LINKS) { 6409eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (test_bit(hlid, wlvif->links_map)) { 6419eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller found = true; 6429eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller break; 6439eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6449eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6459eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6469eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (!found) 6479eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller continue; 6489eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6499eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller /* enable rx streaming */ 6500744bdb60b51dce54553d5af9a6133f1fe419032Eliad Peller if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags)) 6519eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller ieee80211_queue_work(wl->hw, 6529eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller &wlvif->rx_streaming_enable_work); 6539eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 6549eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller mod_timer(&wlvif->rx_streaming_timer, 6559eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller jiffies + msecs_to_jiffies(timeout)); 6569eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 6579eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller} 6589eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 659a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Pellervoid wl1271_tx_work_locked(struct wl1271 *wl) 660f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 661a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller struct wl12xx_vif *wlvif; 662f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct sk_buff *skb; 6639eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller struct wl1271_tx_hw_descr *desc; 6646c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv u32 buf_offset = 0; 6656c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv bool sent_packets = false; 6669eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller unsigned long active_hlids[BITS_TO_LONGS(WL12XX_MAX_LINKS)] = {0}; 667f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int ret; 668f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 669f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (unlikely(wl->state == WL1271_STATE_OFF)) 670c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller return; 671f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 672a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller while ((skb = wl1271_skb_dequeue(wl))) { 6730f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 6749eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller bool has_data = false; 6759eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller 676a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wlvif = NULL; 6770f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller if (!wl12xx_is_dummy_packet(wl, skb) && info->control.vif) 6780f1680147ce2509383e053fa843020e0e9f3c6ceEliad Peller wlvif = wl12xx_vif_to_data(info->control.vif); 679a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller 6809eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller has_data = wlvif && wl1271_tx_is_data_present(skb); 681a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller ret = wl1271_prepare_tx_frame(wl, wlvif, skb, buf_offset); 6826c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv if (ret == -EAGAIN) { 683a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv /* 6846c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Aggregation buffer is full. 6856c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Flush buffer and try again. 6866c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv */ 687d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 68800782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf, 68900782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho buf_offset, true); 6906c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv sent_packets = true; 6916c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv buf_offset = 0; 6926c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv continue; 6936c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv } else if (ret == -EBUSY) { 6946c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv /* 6956c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv * Firmware buffer is full. 696a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv * Queue back last skb, and stop aggregating. 697a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv */ 698d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 699a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv /* No work left, avoid scheduling redundant tx work */ 700a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv set_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags); 701ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen goto out_ack; 702f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } else if (ret < 0) { 7035de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller if (wl12xx_is_dummy_packet(wl, skb)) 7045de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller /* 7055de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller * fw still expects dummy packet, 7065de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller * so re-enqueue it 7075de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller */ 7085de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller wl1271_skb_queue_head(wl, wlvif, skb); 7095de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller else 7105de8eef4fdd2044f6981ebf62330720bcdba8ee3Eliad Peller ieee80211_free_txskb(wl->hw, skb); 711ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen goto out_ack; 712f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 713a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv buf_offset += ret; 714a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv wl->tx_packets_count++; 7159eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller if (has_data) { 7169eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller desc = (struct wl1271_tx_hw_descr *) skb->data; 7179eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller __set_bit(desc->hlid, active_hlids); 7189eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller } 719f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 720f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 721ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinenout_ack: 722a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv if (buf_offset) { 72300782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wlcore_write_data(wl, REG_SLV_MEM_DATA, wl->aggr_buf, 72400782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho buf_offset, true); 7256c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv sent_packets = true; 7266c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv } 7276c6e669ed6282788d6045397ce0f201edc400d9dIdo Yariv if (sent_packets) { 728606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv /* 729606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv * Interrupt the firmware with the new packets. This is only 730606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv * required for older hardware revisions 731606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv */ 7326f7dd16cb125468a5393861c22fbecfb52dd9653Luciano Coelho if (wl->quirks & WLCORE_QUIRK_END_OF_TRANSACTION) 73300782136b4d6e2316e0a2a55f3b1fba160e9576eLuciano Coelho wl1271_write32(wl, WL12XX_HOST_WR_ACCESS, 734606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv wl->tx_packets_count); 735606ea9fa0b2c01ffafb6beae92ea8e2b1473520bIdo Yariv 736a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 737a19606b4333ff34e9b2863f37c20fe86b42be14cIdo Yariv } 7389eb599e9c62dcfd4efece1936c385381b366b684Eliad Peller wl12xx_rearm_rx_streaming(wl, active_hlids); 739a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv} 740f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 741a522550a283de31c7cfc30c7a129ce584e38c582Ido Yarivvoid wl1271_tx_work(struct work_struct *work) 742a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv{ 743a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv struct wl1271 *wl = container_of(work, struct wl1271, tx_work); 744c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller int ret; 745a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv 746a522550a283de31c7cfc30c7a129ce584e38c582Ido Yariv mutex_lock(&wl->mutex); 747c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller ret = wl1271_ps_elp_wakeup(wl); 748c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller if (ret < 0) 749c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller goto out; 750c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller 751a32d0cdfcb7e5d41f210e13cbc78dc86a5a85a08Eliad Peller wl1271_tx_work_locked(wl); 752c1b193eb6557279d037ab18c00ab628c6c78847fEliad Peller 753c75bbcdb200e2815c855e42a4685d170858af306Eliad Peller wl1271_ps_elp_sleep(wl); 754c1b193eb6557279d037ab18c00ab628c6c78847fEliad Pellerout: 755f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho mutex_unlock(&wl->mutex); 756f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 757f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 758d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchsstatic u8 wl1271_tx_get_rate_flags(u8 rate_class_index) 759d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs{ 760defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs u8 flags = 0; 761defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs 762d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs if (rate_class_index >= CONF_HW_RXTX_RATE_MCS_MIN && 763d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs rate_class_index <= CONF_HW_RXTX_RATE_MCS_MAX) 764defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs flags |= IEEE80211_TX_RC_MCS; 765defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs if (rate_class_index == CONF_HW_RXTX_RATE_MCS7_SGI) 766defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs flags |= IEEE80211_TX_RC_SHORT_GI; 767defe02c720d54fc9bda3e5e625be70adac347a61Pontus Fuchs return flags; 768d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs} 769d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs 770f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelhostatic void wl1271_tx_complete_packet(struct wl1271 *wl, 771f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_res_descr *result) 772f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 773f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct ieee80211_tx_info *info; 77448e93e402ad19f570bae323b07911bdf6562af8eEliad Peller struct ieee80211_vif *vif; 77548e93e402ad19f570bae323b07911bdf6562af8eEliad Peller struct wl12xx_vif *wlvif; 776f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct sk_buff *skb; 777f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int id = result->id; 77831627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen int rate = -1; 779d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs u8 rate_flags = 0; 78031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen u8 retries = 0; 781f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 782f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* check for id legality */ 78372b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov if (unlikely(id >= wl->num_tx_desc || wl->tx_frames[id] == NULL)) { 784f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_warning("TX result illegal id: %d", id); 785f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho return; 786f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 787f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 788f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho skb = wl->tx_frames[id]; 789f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info = IEEE80211_SKB_CB(skb); 790f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 791990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (wl12xx_is_dummy_packet(wl, skb)) { 792ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi wl1271_free_tx_id(wl, id); 793ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi return; 794ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 795ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi 79648e93e402ad19f570bae323b07911bdf6562af8eEliad Peller /* info->control is valid as long as we don't update info->status */ 79748e93e402ad19f570bae323b07911bdf6562af8eEliad Peller vif = info->control.vif; 79848e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif = wl12xx_vif_to_data(vif); 79948e93e402ad19f570bae323b07911bdf6562af8eEliad Peller 80031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen /* update the TX status info */ 80131627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen if (result->status == TX_SUCCESS) { 80231627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) 803f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho info->flags |= IEEE80211_TX_STAT_ACK; 8041b92f15ee0e0f06222d4fd36dc36960d217243b3Eliad Peller rate = wl1271_rate_to_idx(result->rate_class_index, 8051b92f15ee0e0f06222d4fd36dc36960d217243b3Eliad Peller wlvif->band); 806d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs rate_flags = wl1271_tx_get_rate_flags(result->rate_class_index); 80731627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen retries = result->ack_failures; 80831627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen } else if (result->status == TX_RETRY_EXCEEDED) { 80931627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen wl->stats.excessive_retries++; 81031627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen retries = result->ack_failures; 811f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 812f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 81331627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.rates[0].idx = rate; 81431627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.rates[0].count = retries; 815d2e2d769e3d328ba7cbf08e8ed85e3f817915843Pontus Fuchs info->status.rates[0].flags = rate_flags; 81631627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen info->status.ack_signal = -1; 81731627dc59b4a87c4198b4245a7de1b8ccf4424faJuuso Oikarinen 818f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->stats.retry_count += result->ack_failures; 819f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 820b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski /* 821b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * update sequence number only when relevant, i.e. only in 822b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * sessions of TKIP, AES and GEM (not in open or WEP sessions) 823b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski */ 824b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski if (info->control.hw_key && 825b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP || 826b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP || 827b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski info->control.hw_key->cipher == WL1271_CIPHER_SUITE_GEM)) { 828b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski u8 fw_lsb = result->tx_security_sequence_number_lsb; 82948e93e402ad19f570bae323b07911bdf6562af8eEliad Peller u8 cur_lsb = wlvif->tx_security_last_seq_lsb; 830b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski 831b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski /* 832b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * update security sequence number, taking care of potential 833b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski * wrap-around 834b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski */ 83548e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif->tx_security_seq += (fw_lsb - cur_lsb) & 0xff; 83648e93e402ad19f570bae323b07911bdf6562af8eEliad Peller wlvif->tx_security_last_seq_lsb = fw_lsb; 837b992c68228a3ccdf73ea4f57519e1663839a9cbeOz Krakowski } 838ac4e4ce54eb9cb4963a1d3d91fc65536d882ffb2Juuso Oikarinen 8391e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* remove private header from packet */ 8401e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 8411e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen 8421e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen /* remove TKIP header space if present */ 843f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho if (info->control.hw_key && 84497359d1235eaf634fe706c9faa6e40181cc95fb8Johannes Berg info->control.hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) { 8451e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 8465ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, skb->data, 8475ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller hdrlen); 8485ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 8491e2b79761d551c545225e1fa6e7d144f7e804898Juuso Oikarinen } 850f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 851f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_debug(DEBUG_TX, "tx status id %u skb 0x%p failures %u rate 0x%x" 852f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho " status 0x%x", 853f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result->id, skb, result->ack_failures, 854f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result->rate_class_index, result->status); 855f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 856f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* return the packet to the stack */ 857a620865edf62ea2d024bbfe62162244473badfcbIdo Yariv skb_queue_tail(&wl->deferred_tx_queue, skb); 85892ef8960aee2f840c6a54c968d40199843f015c0Eliad Peller queue_work(wl->freezable_wq, &wl->netstack_work); 85925eeb9e3876a161e3afcc820c6cb72e13f9b7c7eIdo Yariv wl1271_free_tx_id(wl, result->id); 860f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 861f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 862f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho/* Called upon reception of a TX complete interrupt */ 863ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinenvoid wl1271_tx_complete(struct wl1271 *wl) 864f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 865f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_acx_mem_map *memmap = 866f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho (struct wl1271_acx_mem_map *)wl->target_mem_map; 867ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen u32 count, fw_counter; 868f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u32 i; 869f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 870f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* read the tx results from the chipset */ 8717b048c52d7283ebf07c826a45c631a6ba225c057Teemu Paasikivi wl1271_read(wl, le32_to_cpu(memmap->tx_result), 8727b048c52d7283ebf07c826a45c631a6ba225c057Teemu Paasikivi wl->tx_res_if, sizeof(*wl->tx_res_if), false); 873ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen fw_counter = le32_to_cpu(wl->tx_res_if->tx_result_fw_counter); 874ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen 875ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen /* write host counter to chipset (to ack) */ 876ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen wl1271_write32(wl, le32_to_cpu(memmap->tx_result) + 877ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen offsetof(struct wl1271_tx_hw_res_if, 878ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen tx_result_host_counter), fw_counter); 879ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen 880ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen count = fw_counter - wl->tx_results_count; 88106f7bc7db79fabe6b2ec16eff0f59e4acc21eb72Juuso Oikarinen wl1271_debug(DEBUG_TX, "tx_complete received, packets: %d", count); 882f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 883f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* verify that the result buffer is not getting overrun */ 884ffb591cd0e32d817bdbd359dead3baa770b999f8Juuso Oikarinen if (unlikely(count > TX_HW_RESULT_QUEUE_LEN)) 885f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_warning("TX result overflow from chipset: %d", count); 886f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 887f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* process the results */ 888f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho for (i = 0; i < count; i++) { 889f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho struct wl1271_tx_hw_res_descr *result; 890f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho u8 offset = wl->tx_results_count & TX_HW_RESULT_QUEUE_LEN_MASK; 891f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 892f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* process the packet */ 893f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho result = &(wl->tx_res_if->tx_results_queue[offset]); 894f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl1271_tx_complete_packet(wl, result); 895f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 896f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho wl->tx_results_count++; 897f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 898f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 899f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 900a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsovvoid wl1271_tx_reset_link_queues(struct wl1271 *wl, u8 hlid) 901a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov{ 902a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov struct sk_buff *skb; 903f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int i; 904a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov unsigned long flags; 9051d36cd892c130a5a781acb282e083b94127f1c50Arik Nemtsov struct ieee80211_tx_info *info; 906f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov int total[NUM_TX_QUEUES]; 907a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 908a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) { 909f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov total[i] = 0; 910a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov while ((skb = skb_dequeue(&wl->links[hlid].tx_queue[i]))) { 911a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_debug(DEBUG_TX, "link freeing skb 0x%p", skb); 91279ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov 91379ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov if (!wl12xx_is_dummy_packet(wl, skb)) { 91479ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info = IEEE80211_SKB_CB(skb); 91579ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info->status.rates[0].idx = -1; 91679ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov info->status.rates[0].count = 0; 91779ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov ieee80211_tx_status_ni(wl->hw, skb); 91879ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov } 91979ebec76be4e7c2ebed9fb0b9510d10d599ed63eArik Nemtsov 920f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov total[i]++; 921a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 922a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov } 923a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 924a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov spin_lock_irqsave(&wl->wl_lock, flags); 925f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 926f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_queue_count[i] -= total[i]; 927a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov spin_unlock_irqrestore(&wl->wl_lock, flags); 928a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 929a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 930a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov} 931a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 9327dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov/* caller must hold wl->mutex and TX must be stopped */ 933d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellervoid wl12xx_tx_reset_wlvif(struct wl1271 *wl, struct wl12xx_vif *wlvif) 934f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho{ 935f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho int i; 936f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 937f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho /* TX failure */ 938d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller for_each_set_bit(i, wlvif->links_map, WL12XX_MAX_LINKS) { 939d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller if (wlvif->bss_type == BSS_TYPE_AP_BSS) 940c7ffb902cca655e4d6bdda4156407008573bb214Eliad Peller wl1271_free_sta(wl, wlvif, i); 941d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller else 942d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->sta.ba_rx_bitmap = 0; 943f1acea9a9d48174f982e14a7a488b208d39d825fArik Nemtsov 944d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl->links[i].allocated_pkts = 0; 945d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wl->links[i].prev_freed_pkts = 0; 946f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho } 947d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller wlvif->last_tx_hlid = 0; 948d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller 949d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller} 950d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller/* caller must hold wl->mutex and TX must be stopped */ 951d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Pellervoid wl12xx_tx_reset(struct wl1271 *wl, bool reset_tx_queues) 952d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller{ 953d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller int i; 954d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct sk_buff *skb; 955d6a3cc2ef962ad4392a2401cae513a18a6d35099Eliad Peller struct ieee80211_tx_info *info; 956a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov 9576246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov /* only reset the queues if something bad happened */ 9586246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov if (WARN_ON_ONCE(wl1271_tx_total_queue_count(wl) != 0)) { 9596246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov for (i = 0; i < WL12XX_MAX_LINKS; i++) 9606246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov wl1271_tx_reset_link_queues(wl, i); 9616246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov 9626246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov for (i = 0; i < NUM_TX_QUEUES; i++) 9636246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov wl->tx_queue_count[i] = 0; 9646246ca003f2560e30b9696757efc271284b809f6Arik Nemtsov } 965f1acea9a9d48174f982e14a7a488b208d39d825fArik Nemtsov 966708bb3cf58a9bc90f3171ba64f30601f690e5aaaArik Nemtsov wl->stopped_queues_map = 0; 967f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho 9682fe33e8cff354a3f320549544bffebbbab680145Ido Yariv /* 9692fe33e8cff354a3f320549544bffebbbab680145Ido Yariv * Make sure the driver is at a consistent state, in case this 9702fe33e8cff354a3f320549544bffebbbab680145Ido Yariv * function is called from a context other than interface removal. 9717dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov * This call will always wake the TX queues. 9722fe33e8cff354a3f320549544bffebbbab680145Ido Yariv */ 9737dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov if (reset_tx_queues) 9747dece1c8e1044287287d44ac183a946333b55fc3Arik Nemtsov wl1271_handle_tx_low_watermark(wl); 9752fe33e8cff354a3f320549544bffebbbab680145Ido Yariv 97672b0624fa5b766133fd0be9099724324b1f0d70eArik Nemtsov for (i = 0; i < wl->num_tx_desc; i++) { 97750e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv if (wl->tx_frames[i] == NULL) 97850e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv continue; 97950e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 98050e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv skb = wl->tx_frames[i]; 98150e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv wl1271_free_tx_id(wl, i); 98250e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv wl1271_debug(DEBUG_TX, "freeing skb 0x%p", skb); 98350e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 984990f5de7384f9e5922e4c7c7572cbf4f29a9441eIdo Yariv if (!wl12xx_is_dummy_packet(wl, skb)) { 985ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi /* 986ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * Remove private headers before passing the skb to 987ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi * mac80211 988ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi */ 989ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info = IEEE80211_SKB_CB(skb); 990ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi skb_pull(skb, sizeof(struct wl1271_tx_hw_descr)); 991ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi if (info->control.hw_key && 992ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->control.hw_key->cipher == 993ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi WLAN_CIPHER_SUITE_TKIP) { 994ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi int hdrlen = ieee80211_get_hdrlen_from_skb(skb); 9955ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller memmove(skb->data + WL1271_EXTRA_SPACE_TKIP, 996ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi skb->data, hdrlen); 9975ec8a448e0e978103bc5ca7136084b5e2b36989eEliad Peller skb_pull(skb, WL1271_EXTRA_SPACE_TKIP); 998ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 99950e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 1000ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->status.rates[0].idx = -1; 1001ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi info->status.rates[0].count = 0; 100250e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv 1003c27d3accb6f06b0afedfe472dfe0c8e7d87ff0a6Eliad Peller ieee80211_tx_status_ni(wl->hw, skb); 1004ae47c45fd02fdf88d57adc370e78e7a01e2bfcbcShahar Levi } 100550e9f746f63c9b881f2ca4a35dbdfd34b1a8a215Ido Yariv } 1006781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen} 1007781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1008781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen#define WL1271_TX_FLUSH_TIMEOUT 500000 1009781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1010781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen/* caller must *NOT* hold wl->mutex */ 1011781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinenvoid wl1271_tx_flush(struct wl1271 *wl) 1012781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen{ 1013781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen unsigned long timeout; 101418aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov int i; 1015781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen timeout = jiffies + usecs_to_jiffies(WL1271_TX_FLUSH_TIMEOUT); 1016781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1017781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen while (!time_after(jiffies, timeout)) { 1018781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_lock(&wl->mutex); 1019a8c0ddb5ba2889e1e11a033ccbadfc600f236a91Arik Nemtsov wl1271_debug(DEBUG_TX, "flushing tx buffer: %d %d", 1020f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl->tx_frames_cnt, 1021f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov wl1271_tx_total_queue_count(wl)); 1022f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov if ((wl->tx_frames_cnt == 0) && 1023f1a46384ad568f72c11edbe2a3ec284bf32f2dbdArik Nemtsov (wl1271_tx_total_queue_count(wl) == 0)) { 1024781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_unlock(&wl->mutex); 1025781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen return; 1026781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 1027781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen mutex_unlock(&wl->mutex); 1028781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen msleep(1); 1029781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen } 1030781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen 1031781608c41386b560b501404233fc43d8ef100c71Juuso Oikarinen wl1271_warning("Unable to flush all TX buffers, timed out."); 103218aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov 103318aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov /* forcibly flush all Tx buffers on our queues */ 103418aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov mutex_lock(&wl->mutex); 103518aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov for (i = 0; i < WL12XX_MAX_LINKS; i++) 103618aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov wl1271_tx_reset_link_queues(wl, i); 103718aa755b84715f36e2811734f95cb822bcacfd89Arik Nemtsov mutex_unlock(&wl->mutex); 1038f5fc0f86b02afef1119b523623b4cde41475bc8cLuciano Coelho} 1039e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov 1040af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Pelleru32 wl1271_tx_min_rate_get(struct wl1271 *wl, u32 rate_set) 1041e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov{ 1042af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller if (WARN_ON(!rate_set)) 1043af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller return 0; 1044e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov 1045af7fbb28efff0c0d8fc0852ad6622e5437a7611eEliad Peller return BIT(__ffs(rate_set)); 1046e0fe371b74326a85029fe8720506e021fe73905aArik Nemtsov} 1047