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mac80211: make tx() operation return void
[deliverable/linux.git] / drivers / net / wireless / libertas_tf / main.c
CommitLineData
06b16ae5
LCC		 1/*
2 * Copyright (C) 2008, cozybit Inc.
3 * Copyright (C) 2003-2006, Marvell International Ltd.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 */
edfcba15
JL		 10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
5a0e3ad6
TH		 12#include <linux/slab.h>
13
edfcba15 14#include <linux/etherdevice.h>
06b16ae5 15#include "libertas_tf.h"
06b16ae5
LCC		 16
17#define DRIVER_RELEASE_VERSION "004.p0"
18/* thinfirm version: 5.132.X.pX */
19#define LBTF_FW_VER_MIN 0x05840300
20#define LBTF_FW_VER_MAX 0x0584ffff
21#define QOS_CONTROL_LEN 2
22
e9bd5bcd
S		 23/* Module parameters */
24unsigned int lbtf_debug;
25EXPORT_SYMBOL_GPL(lbtf_debug);
26module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
27
28static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
29#ifdef DEBUG
30 "-dbg"
31#endif
32 "";
33
06b16ae5
LCC		 34struct workqueue_struct *lbtf_wq;
35
36static const struct ieee80211_channel lbtf_channels[] = {
37 { .center_freq = 2412, .hw_value = 1 },
38 { .center_freq = 2417, .hw_value = 2 },
39 { .center_freq = 2422, .hw_value = 3 },
40 { .center_freq = 2427, .hw_value = 4 },
41 { .center_freq = 2432, .hw_value = 5 },
42 { .center_freq = 2437, .hw_value = 6 },
43 { .center_freq = 2442, .hw_value = 7 },
44 { .center_freq = 2447, .hw_value = 8 },
45 { .center_freq = 2452, .hw_value = 9 },
46 { .center_freq = 2457, .hw_value = 10 },
47 { .center_freq = 2462, .hw_value = 11 },
48 { .center_freq = 2467, .hw_value = 12 },
49 { .center_freq = 2472, .hw_value = 13 },
50 { .center_freq = 2484, .hw_value = 14 },
51};
52
53/* This table contains the hardware specific values for the modulation rates. */
54static const struct ieee80211_rate lbtf_rates[] = {
55 { .bitrate = 10,
56 .hw_value = 0, },
57 { .bitrate = 20,
58 .hw_value = 1,
59 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
60 { .bitrate = 55,
61 .hw_value = 2,
62 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
63 { .bitrate = 110,
64 .hw_value = 3,
65 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
66 { .bitrate = 60,
67 .hw_value = 5,
68 .flags = 0 },
69 { .bitrate = 90,
70 .hw_value = 6,
71 .flags = 0 },
72 { .bitrate = 120,
73 .hw_value = 7,
74 .flags = 0 },
75 { .bitrate = 180,
76 .hw_value = 8,
77 .flags = 0 },
78 { .bitrate = 240,
79 .hw_value = 9,
80 .flags = 0 },
81 { .bitrate = 360,
82 .hw_value = 10,
83 .flags = 0 },
84 { .bitrate = 480,
85 .hw_value = 11,
86 .flags = 0 },
87 { .bitrate = 540,
88 .hw_value = 12,
89 .flags = 0 },
90};
91
92static void lbtf_cmd_work(struct work_struct *work)
93{
94 struct lbtf_private *priv = container_of(work, struct lbtf_private,
95 cmd_work);
e9bd5bcd
S		 96
97 lbtf_deb_enter(LBTF_DEB_CMD);
98
06b16ae5
LCC		 99 spin_lock_irq(&priv->driver_lock);
100 /* command response? */
101 if (priv->cmd_response_rxed) {
102 priv->cmd_response_rxed = 0;
103 spin_unlock_irq(&priv->driver_lock);
104 lbtf_process_rx_command(priv);
105 spin_lock_irq(&priv->driver_lock);
106 }
107
108 if (priv->cmd_timed_out && priv->cur_cmd) {
109 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
110
111 if (++priv->nr_retries > 10) {
112 lbtf_complete_command(priv, cmdnode,
113 -ETIMEDOUT);
114 priv->nr_retries = 0;
115 } else {
116 priv->cur_cmd = NULL;
117
118 /* Stick it back at the _top_ of the pending
119 * queue for immediate resubmission */
120 list_add(&cmdnode->list, &priv->cmdpendingq);
121 }
122 }
123 priv->cmd_timed_out = 0;
124 spin_unlock_irq(&priv->driver_lock);
125
e9bd5bcd
S		 126 if (!priv->fw_ready) {
127 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
06b16ae5 128 return;
e9bd5bcd
S		 129 }
130
06b16ae5
LCC		 131 /* Execute the next command */
132 if (!priv->cur_cmd)
133 lbtf_execute_next_command(priv);
e9bd5bcd
S		 134
135 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 136}
137
138/**
139 * lbtf_setup_firmware: initialize firmware.
140 *
141 * @priv A pointer to struct lbtf_private structure
142 *
143 * Returns: 0 on success.
144 */
145static int lbtf_setup_firmware(struct lbtf_private *priv)
146{
147 int ret = -1;
148
e9bd5bcd 149 lbtf_deb_enter(LBTF_DEB_FW);
06b16ae5
LCC		 150 /*
151 * Read priv address from HW
152 */
153 memset(priv->current_addr, 0xff, ETH_ALEN);
154 ret = lbtf_update_hw_spec(priv);
155 if (ret) {
156 ret = -1;
157 goto done;
158 }
159
160 lbtf_set_mac_control(priv);
161 lbtf_set_radio_control(priv);
162
163 ret = 0;
164done:
e9bd5bcd 165 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
06b16ae5
LCC		 166 return ret;
167}
168
169/**
170 * This function handles the timeout of command sending.
171 * It will re-send the same command again.
172 */
173static void command_timer_fn(unsigned long data)
174{
175 struct lbtf_private *priv = (struct lbtf_private *)data;
176 unsigned long flags;
e9bd5bcd 177 lbtf_deb_enter(LBTF_DEB_CMD);
06b16ae5
LCC		 178
179 spin_lock_irqsave(&priv->driver_lock, flags);
180
181 if (!priv->cur_cmd) {
182 printk(KERN_DEBUG "libertastf: command timer expired; "
183 "no pending command\n");
184 goto out;
185 }
186
187 printk(KERN_DEBUG "libertas: command %x timed out\n",
188 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
189
190 priv->cmd_timed_out = 1;
191 queue_work(lbtf_wq, &priv->cmd_work);
192out:
193 spin_unlock_irqrestore(&priv->driver_lock, flags);
e9bd5bcd 194 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 195}
196
197static int lbtf_init_adapter(struct lbtf_private *priv)
198{
e9bd5bcd 199 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 200 memset(priv->current_addr, 0xff, ETH_ALEN);
201 mutex_init(&priv->lock);
202
203 priv->vif = NULL;
204 setup_timer(&priv->command_timer, command_timer_fn,
205 (unsigned long)priv);
206
207 INIT_LIST_HEAD(&priv->cmdfreeq);
208 INIT_LIST_HEAD(&priv->cmdpendingq);
209
210 spin_lock_init(&priv->driver_lock);
211
212 /* Allocate the command buffers */
213 if (lbtf_allocate_cmd_buffer(priv))
214 return -1;
215
e9bd5bcd 216 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 217 return 0;
218}
219
220static void lbtf_free_adapter(struct lbtf_private *priv)
221{
e9bd5bcd 222 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 223 lbtf_free_cmd_buffer(priv);
224 del_timer(&priv->command_timer);
e9bd5bcd 225 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 226}
227
7bb45683 228static void lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
06b16ae5
LCC		 229{
230 struct lbtf_private *priv = hw->priv;
231
232 priv->skb_to_tx = skb;
233 queue_work(lbtf_wq, &priv->tx_work);
234 /*
235 * queue will be restarted when we receive transmission feedback if
236 * there are no buffered multicast frames to send
237 */
238 ieee80211_stop_queues(priv->hw);
06b16ae5
LCC		 239}
240
241static void lbtf_tx_work(struct work_struct *work)
242{
243 struct lbtf_private *priv = container_of(work, struct lbtf_private,
244 tx_work);
245 unsigned int len;
246 struct ieee80211_tx_info *info;
247 struct txpd *txpd;
248 struct sk_buff *skb = NULL;
249 int err;
250
e9bd5bcd
S		 251 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
252
05c914fe 253 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
06b16ae5
LCC		 254 (!skb_queue_empty(&priv->bc_ps_buf)))
255 skb = skb_dequeue(&priv->bc_ps_buf);
256 else if (priv->skb_to_tx) {
257 skb = priv->skb_to_tx;
258 priv->skb_to_tx = NULL;
e9bd5bcd
S		 259 } else {
260 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5 261 return;
e9bd5bcd 262 }
06b16ae5
LCC		 263
264 len = skb->len;
265 info = IEEE80211_SKB_CB(skb);
266 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
267
268 if (priv->surpriseremoved) {
269 dev_kfree_skb_any(skb);
e9bd5bcd 270 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 271 return;
272 }
273
274 memset(txpd, 0, sizeof(struct txpd));
275 /* Activate per-packet rate selection */
276 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
277 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
278
279 /* copy destination address from 802.11 header */
280 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
281 ETH_ALEN);
282 txpd->tx_packet_length = cpu_to_le16(len);
283 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
e9bd5bcd 284 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
06b16ae5
LCC		 285 BUG_ON(priv->tx_skb);
286 spin_lock_irq(&priv->driver_lock);
287 priv->tx_skb = skb;
288 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
289 spin_unlock_irq(&priv->driver_lock);
290 if (err) {
291 dev_kfree_skb_any(skb);
292 priv->tx_skb = NULL;
e9bd5bcd 293 pr_err("TX error: %d", err);
06b16ae5 294 }
e9bd5bcd 295 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 296}
297
298static int lbtf_op_start(struct ieee80211_hw *hw)
299{
300 struct lbtf_private *priv = hw->priv;
301 void *card = priv->card;
302 int ret = -1;
303
e9bd5bcd
S		 304 lbtf_deb_enter(LBTF_DEB_MACOPS);
305
06b16ae5
LCC		 306 if (!priv->fw_ready)
307 /* Upload firmware */
308 if (priv->hw_prog_firmware(card))
309 goto err_prog_firmware;
310
311 /* poke the firmware */
312 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
313 priv->radioon = RADIO_ON;
314 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
315 ret = lbtf_setup_firmware(priv);
316 if (ret)
317 goto err_prog_firmware;
318
319 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
320 (priv->fwrelease > LBTF_FW_VER_MAX)) {
321 ret = -1;
322 goto err_prog_firmware;
323 }
324
325 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
e9bd5bcd 326 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 327 return 0;
328
329err_prog_firmware:
330 priv->hw_reset_device(card);
e9bd5bcd 331 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret);
06b16ae5
LCC		 332 return ret;
333}
334
335static void lbtf_op_stop(struct ieee80211_hw *hw)
336{
337 struct lbtf_private *priv = hw->priv;
338 unsigned long flags;
339 struct sk_buff *skb;
340
341 struct cmd_ctrl_node *cmdnode;
e9bd5bcd
S		 342
343 lbtf_deb_enter(LBTF_DEB_MACOPS);
344
06b16ae5
LCC		 345 /* Flush pending command nodes */
346 spin_lock_irqsave(&priv->driver_lock, flags);
347 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
348 cmdnode->result = -ENOENT;
349 cmdnode->cmdwaitqwoken = 1;
350 wake_up_interruptible(&cmdnode->cmdwait_q);
351 }
352
353 spin_unlock_irqrestore(&priv->driver_lock, flags);
354 cancel_work_sync(&priv->cmd_work);
355 cancel_work_sync(&priv->tx_work);
356 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
357 dev_kfree_skb_any(skb);
358 priv->radioon = RADIO_OFF;
359 lbtf_set_radio_control(priv);
360
e9bd5bcd 361 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 362}
363
364static int lbtf_op_add_interface(struct ieee80211_hw *hw,
1ed32e4f 365 struct ieee80211_vif *vif)
06b16ae5
LCC		 366{
367 struct lbtf_private *priv = hw->priv;
e9bd5bcd 368 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5
LCC		 369 if (priv->vif != NULL)
370 return -EOPNOTSUPP;
371
1ed32e4f
JB		 372 priv->vif = vif;
373 switch (vif->type) {
05c914fe
JB		 374 case NL80211_IFTYPE_MESH_POINT:
375 case NL80211_IFTYPE_AP:
06b16ae5
LCC		 376 lbtf_set_mode(priv, LBTF_AP_MODE);
377 break;
05c914fe 378 case NL80211_IFTYPE_STATION:
06b16ae5
LCC		 379 lbtf_set_mode(priv, LBTF_STA_MODE);
380 break;
381 default:
382 priv->vif = NULL;
383 return -EOPNOTSUPP;
384 }
1ed32e4f 385 lbtf_set_mac_address(priv, (u8 *) vif->addr);
e9bd5bcd 386 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 387 return 0;
388}
389
390static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
1ed32e4f 391 struct ieee80211_vif *vif)
06b16ae5
LCC		 392{
393 struct lbtf_private *priv = hw->priv;
e9bd5bcd 394 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5 395
05c914fe
JB		 396 if (priv->vif->type == NL80211_IFTYPE_AP ||
397 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
06b16ae5
LCC		 398 lbtf_beacon_ctrl(priv, 0, 0);
399 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
400 lbtf_set_bssid(priv, 0, NULL);
401 priv->vif = NULL;
e9bd5bcd 402 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 403}
404
e8975581 405static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
06b16ae5
LCC		 406{
407 struct lbtf_private *priv = hw->priv;
e8975581 408 struct ieee80211_conf *conf = &hw->conf;
e9bd5bcd 409 lbtf_deb_enter(LBTF_DEB_MACOPS);
e8975581 410
06b16ae5
LCC		 411 if (conf->channel->center_freq != priv->cur_freq) {
412 priv->cur_freq = conf->channel->center_freq;
413 lbtf_set_channel(priv, conf->channel->hw_value);
414 }
e9bd5bcd 415 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 416 return 0;
417}
418
3ac64bee 419static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
22bedad3 420 struct netdev_hw_addr_list *mc_list)
3ac64bee
JB		 421{
422 struct lbtf_private *priv = hw->priv;
423 int i;
22bedad3
JP		 424 struct netdev_hw_addr *ha;
425 int mc_count = netdev_hw_addr_list_count(mc_list);
3ac64bee
JB		 426
427 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
428 return mc_count;
429
430 priv->nr_of_multicastmacaddr = mc_count;
22bedad3
JP		 431 i = 0;
432 netdev_hw_addr_list_for_each(ha, mc_list)
433 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
3ac64bee
JB		 434
435 return mc_count;
436}
437
06b16ae5
LCC		 438#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
439static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
440 unsigned int changed_flags,
441 unsigned int *new_flags,
3ac64bee 442 u64 multicast)
06b16ae5
LCC		 443{
444 struct lbtf_private *priv = hw->priv;
445 int old_mac_control = priv->mac_control;
e9bd5bcd
S		 446
447 lbtf_deb_enter(LBTF_DEB_MACOPS);
448
06b16ae5
LCC		 449 changed_flags &= SUPPORTED_FIF_FLAGS;
450 *new_flags &= SUPPORTED_FIF_FLAGS;
451
e9bd5bcd
S		 452 if (!changed_flags) {
453 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5 454 return;
e9bd5bcd 455 }
06b16ae5
LCC		 456
457 if (*new_flags & (FIF_PROMISC_IN_BSS))
458 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
459 else
460 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
461 if (*new_flags & (FIF_ALLMULTI) ||
3ac64bee 462 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
06b16ae5
LCC		 463 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
464 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
3ac64bee 465 } else if (multicast) {
06b16ae5
LCC		 466 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
467 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
06b16ae5
LCC		 468 lbtf_cmd_set_mac_multicast_addr(priv);
469 } else {
470 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
471 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
472 if (priv->nr_of_multicastmacaddr) {
473 priv->nr_of_multicastmacaddr = 0;
474 lbtf_cmd_set_mac_multicast_addr(priv);
475 }
476 }
477
478
479 if (priv->mac_control != old_mac_control)
480 lbtf_set_mac_control(priv);
e9bd5bcd
S		 481
482 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 483}
484
485static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
486 struct ieee80211_vif *vif,
487 struct ieee80211_bss_conf *bss_conf,
488 u32 changes)
489{
490 struct lbtf_private *priv = hw->priv;
2d0ddec5 491 struct sk_buff *beacon;
e9bd5bcd 492 lbtf_deb_enter(LBTF_DEB_MACOPS);
2d0ddec5
JB		 493
494 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
495 switch (priv->vif->type) {
496 case NL80211_IFTYPE_AP:
497 case NL80211_IFTYPE_MESH_POINT:
498 beacon = ieee80211_beacon_get(hw, vif);
499 if (beacon) {
500 lbtf_beacon_set(priv, beacon);
501 kfree_skb(beacon);
502 lbtf_beacon_ctrl(priv, 1,
503 bss_conf->beacon_int);
504 }
505 break;
506 default:
507 break;
508 }
509 }
510
511 if (changes & BSS_CHANGED_BSSID) {
512 bool activate = !is_zero_ether_addr(bss_conf->bssid);
513 lbtf_set_bssid(priv, activate, bss_conf->bssid);
514 }
06b16ae5
LCC		 515
516 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
517 if (bss_conf->use_short_preamble)
518 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
519 else
520 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
521 lbtf_set_radio_control(priv);
522 }
e9bd5bcd
S		 523
524 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 525}
526
bef9cb58
JL		 527static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
528 struct survey_info *survey)
529{
530 struct lbtf_private *priv = hw->priv;
531 struct ieee80211_conf *conf = &hw->conf;
532
533 if (idx != 0)
534 return -ENOENT;
535
536 survey->channel = conf->channel;
537 survey->filled = SURVEY_INFO_NOISE_DBM;
538 survey->noise = priv->noise;
539
540 return 0;
541}
542
06b16ae5
LCC		 543static const struct ieee80211_ops lbtf_ops = {
544 .tx = lbtf_op_tx,
545 .start = lbtf_op_start,
546 .stop = lbtf_op_stop,
547 .add_interface = lbtf_op_add_interface,
548 .remove_interface = lbtf_op_remove_interface,
549 .config = lbtf_op_config,
3ac64bee 550 .prepare_multicast = lbtf_op_prepare_multicast,
06b16ae5
LCC		 551 .configure_filter = lbtf_op_configure_filter,
552 .bss_info_changed = lbtf_op_bss_info_changed,
bef9cb58 553 .get_survey = lbtf_op_get_survey,
06b16ae5
LCC		 554};
555
556int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
557{
558 struct ieee80211_rx_status stats;
559 struct rxpd *prxpd;
de9cc7a4 560 int need_padding;
06b16ae5 561 unsigned int flags;
de9cc7a4 562 struct ieee80211_hdr *hdr;
06b16ae5 563
e9bd5bcd
S		 564 lbtf_deb_enter(LBTF_DEB_RX);
565
06b16ae5
LCC		 566 prxpd = (struct rxpd *) skb->data;
567
13deb23a 568 memset(&stats, 0, sizeof(stats));
06b16ae5
LCC		 569 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
570 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
571 stats.freq = priv->cur_freq;
572 stats.band = IEEE80211_BAND_2GHZ;
573 stats.signal = prxpd->snr;
bef9cb58 574 priv->noise = prxpd->nf;
06b16ae5
LCC		 575 /* Marvell rate index has a hole at value 4 */
576 if (prxpd->rx_rate > 4)
577 --prxpd->rx_rate;
578 stats.rate_idx = prxpd->rx_rate;
579 skb_pull(skb, sizeof(struct rxpd));
580
de9cc7a4 581 hdr = (struct ieee80211_hdr *)skb->data;
06b16ae5
LCC		 582 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
583
de9cc7a4
HH		 584 need_padding = ieee80211_is_data_qos(hdr->frame_control);
585 need_padding ^= ieee80211_has_a4(hdr->frame_control);
586 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
587 (*ieee80211_get_qos_ctl(hdr) &
588 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
06b16ae5 589
06b16ae5
LCC		 590 if (need_padding) {
591 memmove(skb->data + 2, skb->data, skb->len);
592 skb_reserve(skb, 2);
593 }
594
f1d58c25 595 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
e9bd5bcd
S		 596
597 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
598 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
599 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
600 min_t(unsigned int, skb->len, 100));
601
f1d58c25 602 ieee80211_rx_irqsafe(priv->hw, skb);
e9bd5bcd
S		 603
604 lbtf_deb_leave(LBTF_DEB_RX);
06b16ae5
LCC		 605 return 0;
606}
607EXPORT_SYMBOL_GPL(lbtf_rx);
608
609/**
610 * lbtf_add_card: Add and initialize the card, no fw upload yet.
611 *
612 * @card A pointer to card
613 *
614 * Returns: pointer to struct lbtf_priv.
615 */
616struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
617{
618 struct ieee80211_hw *hw;
619 struct lbtf_private *priv = NULL;
620
e9bd5bcd
S		 621 lbtf_deb_enter(LBTF_DEB_MAIN);
622
06b16ae5
LCC		 623 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
624 if (!hw)
625 goto done;
626
627 priv = hw->priv;
628 if (lbtf_init_adapter(priv))
629 goto err_init_adapter;
630
631 priv->hw = hw;
632 priv->card = card;
633 priv->tx_skb = NULL;
634
635 hw->queues = 1;
636 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
637 hw->extra_tx_headroom = sizeof(struct txpd);
638 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
639 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
640 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
641 priv->band.bitrates = priv->rates;
642 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
643 priv->band.channels = priv->channels;
644 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
f3233831
DS		 645 hw->wiphy->interface_modes =
646 BIT(NL80211_IFTYPE_STATION) |
647 BIT(NL80211_IFTYPE_ADHOC);
06b16ae5
LCC		 648 skb_queue_head_init(&priv->bc_ps_buf);
649
650 SET_IEEE80211_DEV(hw, dmdev);
651
652 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
653 INIT_WORK(&priv->tx_work, lbtf_tx_work);
654 if (ieee80211_register_hw(hw))
655 goto err_init_adapter;
656
657 goto done;
658
659err_init_adapter:
660 lbtf_free_adapter(priv);
661 ieee80211_free_hw(hw);
662 priv = NULL;
663
664done:
e9bd5bcd 665 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
06b16ae5
LCC		 666 return priv;
667}
668EXPORT_SYMBOL_GPL(lbtf_add_card);
669
670
671int lbtf_remove_card(struct lbtf_private *priv)
672{
673 struct ieee80211_hw *hw = priv->hw;
674
e9bd5bcd
S		 675 lbtf_deb_enter(LBTF_DEB_MAIN);
676
06b16ae5
LCC		 677 priv->surpriseremoved = 1;
678 del_timer(&priv->command_timer);
679 lbtf_free_adapter(priv);
680 priv->hw = NULL;
681 ieee80211_unregister_hw(hw);
682 ieee80211_free_hw(hw);
683
e9bd5bcd 684 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 685 return 0;
686}
687EXPORT_SYMBOL_GPL(lbtf_remove_card);
688
689void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
690{
691 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
e6a9854b
JB		 692
693 ieee80211_tx_info_clear_status(info);
06b16ae5
LCC		 694 /*
695 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
696 * default pid rc algorithm.
697 *
698 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
699 */
06b16ae5
LCC		 700 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
701 info->flags |= IEEE80211_TX_STAT_ACK;
702 skb_pull(priv->tx_skb, sizeof(struct txpd));
703 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
704 priv->tx_skb = NULL;
705 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
706 ieee80211_wake_queues(priv->hw);
707 else
708 queue_work(lbtf_wq, &priv->tx_work);
709}
710EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
711
712void lbtf_bcn_sent(struct lbtf_private *priv)
713{
714 struct sk_buff *skb = NULL;
715
05c914fe 716 if (priv->vif->type != NL80211_IFTYPE_AP)
06b16ae5
LCC		 717 return;
718
719 if (skb_queue_empty(&priv->bc_ps_buf)) {
720 bool tx_buff_bc = 0;
721
722 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
723 skb_queue_tail(&priv->bc_ps_buf, skb);
724 tx_buff_bc = 1;
725 }
726 if (tx_buff_bc) {
727 ieee80211_stop_queues(priv->hw);
728 queue_work(lbtf_wq, &priv->tx_work);
729 }
730 }
731
732 skb = ieee80211_beacon_get(priv->hw, priv->vif);
733
734 if (skb) {
735 lbtf_beacon_set(priv, skb);
736 kfree_skb(skb);
737 }
738}
739EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
740
741static int __init lbtf_init_module(void)
742{
e9bd5bcd 743 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 744 lbtf_wq = create_workqueue("libertastf");
745 if (lbtf_wq == NULL) {
746 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
747 return -ENOMEM;
748 }
e9bd5bcd 749 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 750 return 0;
751}
752
753static void __exit lbtf_exit_module(void)
754{
e9bd5bcd 755 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5 756 destroy_workqueue(lbtf_wq);
e9bd5bcd 757 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 758}
759
760module_init(lbtf_init_module);
761module_exit(lbtf_exit_module);
762
763MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
764MODULE_AUTHOR("Cozybit Inc.");
765MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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