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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2008, cozybit Inc.4 * Copyright (C) 2003-2006, Marvell International Ltd.5 */6#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt7 8#include <linux/hardirq.h>9#include <linux/slab.h>10 11#include <linux/etherdevice.h>12#include <linux/module.h>13#include "libertas_tf.h"14 15/* thinfirm version: 5.132.X.pX */16#define LBTF_FW_VER_MIN 0x0584030017#define LBTF_FW_VER_MAX 0x0584ffff18 19/* Module parameters */20unsigned int lbtf_debug;21EXPORT_SYMBOL_GPL(lbtf_debug);22module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);23 24struct workqueue_struct *lbtf_wq;25 26static const struct ieee80211_channel lbtf_channels[] = {27 { .center_freq = 2412, .hw_value = 1 },28 { .center_freq = 2417, .hw_value = 2 },29 { .center_freq = 2422, .hw_value = 3 },30 { .center_freq = 2427, .hw_value = 4 },31 { .center_freq = 2432, .hw_value = 5 },32 { .center_freq = 2437, .hw_value = 6 },33 { .center_freq = 2442, .hw_value = 7 },34 { .center_freq = 2447, .hw_value = 8 },35 { .center_freq = 2452, .hw_value = 9 },36 { .center_freq = 2457, .hw_value = 10 },37 { .center_freq = 2462, .hw_value = 11 },38 { .center_freq = 2467, .hw_value = 12 },39 { .center_freq = 2472, .hw_value = 13 },40 { .center_freq = 2484, .hw_value = 14 },41};42 43/* This table contains the hardware specific values for the modulation rates. */44static const struct ieee80211_rate lbtf_rates[] = {45 { .bitrate = 10,46 .hw_value = 0, },47 { .bitrate = 20,48 .hw_value = 1,49 .flags = IEEE80211_RATE_SHORT_PREAMBLE },50 { .bitrate = 55,51 .hw_value = 2,52 .flags = IEEE80211_RATE_SHORT_PREAMBLE },53 { .bitrate = 110,54 .hw_value = 3,55 .flags = IEEE80211_RATE_SHORT_PREAMBLE },56 { .bitrate = 60,57 .hw_value = 5,58 .flags = 0 },59 { .bitrate = 90,60 .hw_value = 6,61 .flags = 0 },62 { .bitrate = 120,63 .hw_value = 7,64 .flags = 0 },65 { .bitrate = 180,66 .hw_value = 8,67 .flags = 0 },68 { .bitrate = 240,69 .hw_value = 9,70 .flags = 0 },71 { .bitrate = 360,72 .hw_value = 10,73 .flags = 0 },74 { .bitrate = 480,75 .hw_value = 11,76 .flags = 0 },77 { .bitrate = 540,78 .hw_value = 12,79 .flags = 0 },80};81 82static void lbtf_cmd_work(struct work_struct *work)83{84 struct lbtf_private *priv = container_of(work, struct lbtf_private,85 cmd_work);86 87 lbtf_deb_enter(LBTF_DEB_CMD);88 89 spin_lock_irq(&priv->driver_lock);90 /* command response? */91 if (priv->cmd_response_rxed) {92 priv->cmd_response_rxed = 0;93 spin_unlock_irq(&priv->driver_lock);94 lbtf_process_rx_command(priv);95 spin_lock_irq(&priv->driver_lock);96 }97 98 if (priv->cmd_timed_out && priv->cur_cmd) {99 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;100 101 if (++priv->nr_retries > 10) {102 lbtf_complete_command(priv, cmdnode,103 -ETIMEDOUT);104 priv->nr_retries = 0;105 } else {106 priv->cur_cmd = NULL;107 108 /* Stick it back at the _top_ of the pending109 * queue for immediate resubmission */110 list_add(&cmdnode->list, &priv->cmdpendingq);111 }112 }113 priv->cmd_timed_out = 0;114 spin_unlock_irq(&priv->driver_lock);115 116 /* Execute the next command */117 if (!priv->cur_cmd)118 lbtf_execute_next_command(priv);119 120 lbtf_deb_leave(LBTF_DEB_CMD);121}122 123/*124 * This function handles the timeout of command sending.125 * It will re-send the same command again.126 */127static void command_timer_fn(struct timer_list *t)128{129 struct lbtf_private *priv = from_timer(priv, t, command_timer);130 unsigned long flags;131 lbtf_deb_enter(LBTF_DEB_CMD);132 133 spin_lock_irqsave(&priv->driver_lock, flags);134 135 if (!priv->cur_cmd) {136 printk(KERN_DEBUG "libertastf: command timer expired; "137 "no pending command\n");138 goto out;139 }140 141 printk(KERN_DEBUG "libertas: command %x timed out\n",142 le16_to_cpu(priv->cur_cmd->cmdbuf->command));143 144 priv->cmd_timed_out = 1;145 queue_work(lbtf_wq, &priv->cmd_work);146out:147 spin_unlock_irqrestore(&priv->driver_lock, flags);148 lbtf_deb_leave(LBTF_DEB_CMD);149}150 151static int lbtf_init_adapter(struct lbtf_private *priv)152{153 lbtf_deb_enter(LBTF_DEB_MAIN);154 eth_broadcast_addr(priv->current_addr);155 mutex_init(&priv->lock);156 157 priv->vif = NULL;158 timer_setup(&priv->command_timer, command_timer_fn, 0);159 160 INIT_LIST_HEAD(&priv->cmdfreeq);161 INIT_LIST_HEAD(&priv->cmdpendingq);162 163 spin_lock_init(&priv->driver_lock);164 165 /* Allocate the command buffers */166 if (lbtf_allocate_cmd_buffer(priv))167 return -1;168 169 lbtf_deb_leave(LBTF_DEB_MAIN);170 return 0;171}172 173static void lbtf_free_adapter(struct lbtf_private *priv)174{175 lbtf_deb_enter(LBTF_DEB_MAIN);176 lbtf_free_cmd_buffer(priv);177 del_timer(&priv->command_timer);178 lbtf_deb_leave(LBTF_DEB_MAIN);179}180 181static void lbtf_op_tx(struct ieee80211_hw *hw,182 struct ieee80211_tx_control *control,183 struct sk_buff *skb)184{185 struct lbtf_private *priv = hw->priv;186 187 priv->skb_to_tx = skb;188 queue_work(lbtf_wq, &priv->tx_work);189 /*190 * queue will be restarted when we receive transmission feedback if191 * there are no buffered multicast frames to send192 */193 ieee80211_stop_queues(priv->hw);194}195 196static void lbtf_tx_work(struct work_struct *work)197{198 struct lbtf_private *priv = container_of(work, struct lbtf_private,199 tx_work);200 unsigned int len;201 struct ieee80211_tx_info *info;202 struct txpd *txpd;203 struct sk_buff *skb = NULL;204 int err;205 206 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);207 208 if ((priv->vif->type == NL80211_IFTYPE_AP) &&209 (!skb_queue_empty(&priv->bc_ps_buf)))210 skb = skb_dequeue(&priv->bc_ps_buf);211 else if (priv->skb_to_tx) {212 skb = priv->skb_to_tx;213 priv->skb_to_tx = NULL;214 } else {215 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);216 return;217 }218 219 len = skb->len;220 info = IEEE80211_SKB_CB(skb);221 txpd = skb_push(skb, sizeof(struct txpd));222 223 if (priv->surpriseremoved) {224 dev_kfree_skb_any(skb);225 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);226 return;227 }228 229 memset(txpd, 0, sizeof(struct txpd));230 /* Activate per-packet rate selection */231 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |232 ieee80211_get_tx_rate(priv->hw, info)->hw_value);233 234 /* copy destination address from 802.11 header */235 BUILD_BUG_ON(sizeof(txpd->tx_dest_addr) != ETH_ALEN);236 memcpy(&txpd->tx_dest_addr, skb->data + sizeof(struct txpd) + 4,237 ETH_ALEN);238 txpd->tx_packet_length = cpu_to_le16(len);239 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));240 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));241 BUG_ON(priv->tx_skb);242 spin_lock_irq(&priv->driver_lock);243 priv->tx_skb = skb;244 err = priv->ops->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);245 spin_unlock_irq(&priv->driver_lock);246 if (err) {247 dev_kfree_skb_any(skb);248 priv->tx_skb = NULL;249 pr_err("TX error: %d", err);250 }251 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);252}253 254static int lbtf_op_start(struct ieee80211_hw *hw)255{256 struct lbtf_private *priv = hw->priv;257 258 lbtf_deb_enter(LBTF_DEB_MACOPS);259 260 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;261 priv->radioon = RADIO_ON;262 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;263 lbtf_set_mac_control(priv);264 lbtf_set_radio_control(priv);265 266 lbtf_deb_leave(LBTF_DEB_MACOPS);267 return 0;268}269 270static void lbtf_op_stop(struct ieee80211_hw *hw, bool suspend)271{272 struct lbtf_private *priv = hw->priv;273 unsigned long flags;274 struct sk_buff *skb;275 276 struct cmd_ctrl_node *cmdnode;277 278 lbtf_deb_enter(LBTF_DEB_MACOPS);279 280 /* Flush pending command nodes */281 spin_lock_irqsave(&priv->driver_lock, flags);282 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {283 cmdnode->result = -ENOENT;284 cmdnode->cmdwaitqwoken = 1;285 wake_up_interruptible(&cmdnode->cmdwait_q);286 }287 288 spin_unlock_irqrestore(&priv->driver_lock, flags);289 cancel_work_sync(&priv->cmd_work);290 cancel_work_sync(&priv->tx_work);291 while ((skb = skb_dequeue(&priv->bc_ps_buf)))292 dev_kfree_skb_any(skb);293 priv->radioon = RADIO_OFF;294 lbtf_set_radio_control(priv);295 296 lbtf_deb_leave(LBTF_DEB_MACOPS);297}298 299static int lbtf_op_add_interface(struct ieee80211_hw *hw,300 struct ieee80211_vif *vif)301{302 struct lbtf_private *priv = hw->priv;303 lbtf_deb_enter(LBTF_DEB_MACOPS);304 if (priv->vif != NULL)305 return -EOPNOTSUPP;306 307 priv->vif = vif;308 switch (vif->type) {309 case NL80211_IFTYPE_MESH_POINT:310 case NL80211_IFTYPE_AP:311 lbtf_set_mode(priv, LBTF_AP_MODE);312 break;313 case NL80211_IFTYPE_STATION:314 lbtf_set_mode(priv, LBTF_STA_MODE);315 break;316 default:317 priv->vif = NULL;318 return -EOPNOTSUPP;319 }320 lbtf_set_mac_address(priv, (u8 *) vif->addr);321 lbtf_deb_leave(LBTF_DEB_MACOPS);322 return 0;323}324 325static void lbtf_op_remove_interface(struct ieee80211_hw *hw,326 struct ieee80211_vif *vif)327{328 struct lbtf_private *priv = hw->priv;329 lbtf_deb_enter(LBTF_DEB_MACOPS);330 331 if (priv->vif->type == NL80211_IFTYPE_AP ||332 priv->vif->type == NL80211_IFTYPE_MESH_POINT)333 lbtf_beacon_ctrl(priv, 0, 0);334 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);335 lbtf_set_bssid(priv, 0, NULL);336 priv->vif = NULL;337 lbtf_deb_leave(LBTF_DEB_MACOPS);338}339 340static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)341{342 struct lbtf_private *priv = hw->priv;343 struct ieee80211_conf *conf = &hw->conf;344 lbtf_deb_enter(LBTF_DEB_MACOPS);345 346 if (conf->chandef.chan->center_freq != priv->cur_freq) {347 priv->cur_freq = conf->chandef.chan->center_freq;348 lbtf_set_channel(priv, conf->chandef.chan->hw_value);349 }350 lbtf_deb_leave(LBTF_DEB_MACOPS);351 return 0;352}353 354static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,355 struct netdev_hw_addr_list *mc_list)356{357 struct lbtf_private *priv = hw->priv;358 int i;359 struct netdev_hw_addr *ha;360 int mc_count = netdev_hw_addr_list_count(mc_list);361 362 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)363 return mc_count;364 365 priv->nr_of_multicastmacaddr = mc_count;366 i = 0;367 netdev_hw_addr_list_for_each(ha, mc_list)368 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);369 370 return mc_count;371}372 373#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI374static void lbtf_op_configure_filter(struct ieee80211_hw *hw,375 unsigned int changed_flags,376 unsigned int *new_flags,377 u64 multicast)378{379 struct lbtf_private *priv = hw->priv;380 int old_mac_control = priv->mac_control;381 382 lbtf_deb_enter(LBTF_DEB_MACOPS);383 384 changed_flags &= SUPPORTED_FIF_FLAGS;385 *new_flags &= SUPPORTED_FIF_FLAGS;386 387 if (!changed_flags) {388 lbtf_deb_leave(LBTF_DEB_MACOPS);389 return;390 }391 392 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;393 if (*new_flags & (FIF_ALLMULTI) ||394 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {395 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;396 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;397 } else if (multicast) {398 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;399 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;400 lbtf_cmd_set_mac_multicast_addr(priv);401 } else {402 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |403 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);404 if (priv->nr_of_multicastmacaddr) {405 priv->nr_of_multicastmacaddr = 0;406 lbtf_cmd_set_mac_multicast_addr(priv);407 }408 }409 410 411 if (priv->mac_control != old_mac_control)412 lbtf_set_mac_control(priv);413 414 lbtf_deb_leave(LBTF_DEB_MACOPS);415}416 417static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,418 struct ieee80211_vif *vif,419 struct ieee80211_bss_conf *bss_conf,420 u64 changes)421{422 struct lbtf_private *priv = hw->priv;423 struct sk_buff *beacon;424 lbtf_deb_enter(LBTF_DEB_MACOPS);425 426 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {427 switch (priv->vif->type) {428 case NL80211_IFTYPE_AP:429 case NL80211_IFTYPE_MESH_POINT:430 beacon = ieee80211_beacon_get(hw, vif, 0);431 if (beacon) {432 lbtf_beacon_set(priv, beacon);433 kfree_skb(beacon);434 lbtf_beacon_ctrl(priv, 1,435 bss_conf->beacon_int);436 }437 break;438 default:439 break;440 }441 }442 443 if (changes & BSS_CHANGED_BSSID) {444 bool activate = !is_zero_ether_addr(bss_conf->bssid);445 lbtf_set_bssid(priv, activate, bss_conf->bssid);446 }447 448 if (changes & BSS_CHANGED_ERP_PREAMBLE) {449 if (bss_conf->use_short_preamble)450 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;451 else452 priv->preamble = CMD_TYPE_LONG_PREAMBLE;453 lbtf_set_radio_control(priv);454 }455 456 lbtf_deb_leave(LBTF_DEB_MACOPS);457}458 459static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,460 struct survey_info *survey)461{462 struct lbtf_private *priv = hw->priv;463 struct ieee80211_conf *conf = &hw->conf;464 465 if (idx != 0)466 return -ENOENT;467 468 survey->channel = conf->chandef.chan;469 survey->filled = SURVEY_INFO_NOISE_DBM;470 survey->noise = priv->noise;471 472 return 0;473}474 475static const struct ieee80211_ops lbtf_ops = {476 .add_chanctx = ieee80211_emulate_add_chanctx,477 .remove_chanctx = ieee80211_emulate_remove_chanctx,478 .change_chanctx = ieee80211_emulate_change_chanctx,479 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,480 .tx = lbtf_op_tx,481 .wake_tx_queue = ieee80211_handle_wake_tx_queue,482 .start = lbtf_op_start,483 .stop = lbtf_op_stop,484 .add_interface = lbtf_op_add_interface,485 .remove_interface = lbtf_op_remove_interface,486 .config = lbtf_op_config,487 .prepare_multicast = lbtf_op_prepare_multicast,488 .configure_filter = lbtf_op_configure_filter,489 .bss_info_changed = lbtf_op_bss_info_changed,490 .get_survey = lbtf_op_get_survey,491};492 493int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)494{495 struct ieee80211_rx_status stats;496 struct rxpd *prxpd;497 int need_padding;498 struct ieee80211_hdr *hdr;499 500 lbtf_deb_enter(LBTF_DEB_RX);501 502 if (priv->radioon != RADIO_ON) {503 lbtf_deb_rx("rx before we turned on the radio");504 goto done;505 }506 507 prxpd = (struct rxpd *) skb->data;508 509 memset(&stats, 0, sizeof(stats));510 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))511 stats.flag |= RX_FLAG_FAILED_FCS_CRC;512 stats.freq = priv->cur_freq;513 stats.band = NL80211_BAND_2GHZ;514 stats.signal = prxpd->snr - prxpd->nf;515 priv->noise = prxpd->nf;516 /* Marvell rate index has a hole at value 4 */517 if (prxpd->rx_rate > 4)518 --prxpd->rx_rate;519 stats.rate_idx = prxpd->rx_rate;520 skb_pull(skb, sizeof(struct rxpd));521 522 hdr = (struct ieee80211_hdr *)skb->data;523 524 need_padding = ieee80211_is_data_qos(hdr->frame_control);525 need_padding ^= ieee80211_has_a4(hdr->frame_control);526 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&527 (*ieee80211_get_qos_ctl(hdr) &528 IEEE80211_QOS_CTL_A_MSDU_PRESENT);529 530 if (need_padding) {531 memmove(skb->data + 2, skb->data, skb->len);532 skb_reserve(skb, 2);533 }534 535 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));536 537 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",538 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));539 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,540 min_t(unsigned int, skb->len, 100));541 542 ieee80211_rx_irqsafe(priv->hw, skb);543 544done:545 lbtf_deb_leave(LBTF_DEB_RX);546 return 0;547}548EXPORT_SYMBOL_GPL(lbtf_rx);549 550/*551 * lbtf_add_card: Add and initialize the card.552 *553 * Returns: pointer to struct lbtf_priv.554 */555struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev,556 const struct lbtf_ops *ops)557{558 struct ieee80211_hw *hw;559 struct lbtf_private *priv = NULL;560 561 lbtf_deb_enter(LBTF_DEB_MAIN);562 563 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);564 if (!hw)565 goto done;566 567 priv = hw->priv;568 if (lbtf_init_adapter(priv))569 goto err_init_adapter;570 571 priv->hw = hw;572 priv->card = card;573 priv->ops = ops;574 priv->tx_skb = NULL;575 priv->radioon = RADIO_OFF;576 577 hw->queues = 1;578 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);579 ieee80211_hw_set(hw, SIGNAL_DBM);580 hw->extra_tx_headroom = sizeof(struct txpd);581 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));582 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));583 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);584 priv->band.bitrates = priv->rates;585 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);586 priv->band.channels = priv->channels;587 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;588 hw->wiphy->interface_modes =589 BIT(NL80211_IFTYPE_STATION) |590 BIT(NL80211_IFTYPE_ADHOC);591 skb_queue_head_init(&priv->bc_ps_buf);592 593 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);594 595 SET_IEEE80211_DEV(hw, dmdev);596 597 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);598 INIT_WORK(&priv->tx_work, lbtf_tx_work);599 600 if (priv->ops->hw_prog_firmware(priv)) {601 lbtf_deb_usbd(dmdev, "Error programming the firmware\n");602 priv->ops->hw_reset_device(priv);603 goto err_init_adapter;604 }605 606 eth_broadcast_addr(priv->current_addr);607 if (lbtf_update_hw_spec(priv))608 goto err_init_adapter;609 610 if (priv->fwrelease < LBTF_FW_VER_MIN ||611 priv->fwrelease > LBTF_FW_VER_MAX) {612 goto err_init_adapter;613 }614 615 /* The firmware seems to start with the radio enabled. Turn it616 * off before an actual mac80211 start callback is invoked.617 */618 lbtf_set_radio_control(priv);619 620 if (ieee80211_register_hw(hw))621 goto err_init_adapter;622 623 dev_info(dmdev, "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");624 goto done;625 626err_init_adapter:627 lbtf_free_adapter(priv);628 ieee80211_free_hw(hw);629 priv = NULL;630 631done:632 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);633 return priv;634}635EXPORT_SYMBOL_GPL(lbtf_add_card);636 637 638int lbtf_remove_card(struct lbtf_private *priv)639{640 struct ieee80211_hw *hw = priv->hw;641 642 lbtf_deb_enter(LBTF_DEB_MAIN);643 644 priv->surpriseremoved = 1;645 del_timer(&priv->command_timer);646 lbtf_free_adapter(priv);647 priv->hw = NULL;648 ieee80211_unregister_hw(hw);649 ieee80211_free_hw(hw);650 651 lbtf_deb_leave(LBTF_DEB_MAIN);652 return 0;653}654EXPORT_SYMBOL_GPL(lbtf_remove_card);655 656void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)657{658 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);659 660 ieee80211_tx_info_clear_status(info);661 /*662 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211663 * default pid rc algorithm.664 *665 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;666 */667 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)668 info->flags |= IEEE80211_TX_STAT_ACK;669 skb_pull(priv->tx_skb, sizeof(struct txpd));670 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);671 priv->tx_skb = NULL;672 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))673 ieee80211_wake_queues(priv->hw);674 else675 queue_work(lbtf_wq, &priv->tx_work);676}677EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);678 679void lbtf_bcn_sent(struct lbtf_private *priv)680{681 struct sk_buff *skb = NULL;682 683 if (priv->vif->type != NL80211_IFTYPE_AP)684 return;685 686 if (skb_queue_empty(&priv->bc_ps_buf)) {687 bool tx_buff_bc = false;688 689 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {690 skb_queue_tail(&priv->bc_ps_buf, skb);691 tx_buff_bc = true;692 }693 if (tx_buff_bc) {694 ieee80211_stop_queues(priv->hw);695 queue_work(lbtf_wq, &priv->tx_work);696 }697 }698 699 skb = ieee80211_beacon_get(priv->hw, priv->vif, 0);700 701 if (skb) {702 lbtf_beacon_set(priv, skb);703 kfree_skb(skb);704 }705}706EXPORT_SYMBOL_GPL(lbtf_bcn_sent);707 708static int __init lbtf_init_module(void)709{710 lbtf_deb_enter(LBTF_DEB_MAIN);711 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0);712 if (lbtf_wq == NULL) {713 printk(KERN_ERR "libertastf: couldn't create workqueue\n");714 return -ENOMEM;715 }716 lbtf_deb_leave(LBTF_DEB_MAIN);717 return 0;718}719 720static void __exit lbtf_exit_module(void)721{722 lbtf_deb_enter(LBTF_DEB_MAIN);723 destroy_workqueue(lbtf_wq);724 lbtf_deb_leave(LBTF_DEB_MAIN);725}726 727module_init(lbtf_init_module);728module_exit(lbtf_exit_module);729 730MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");731MODULE_AUTHOR("Cozybit Inc.");732MODULE_LICENSE("GPL");733