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21#include <linux/etherdevice.h>
22#include "device.h"
23#include "rxtx.h"
24#include "card.h"
25#include "mac.h"
26#include "rf.h"
27#include "usbpipe.h"
28
29static const u16 vnt_time_stampoff[2][MAX_RATE] = {
30
31 {384, 288, 226, 209, 54, 43, 37, 31, 28, 25, 24, 23},
32
33
34 {384, 192, 130, 113, 54, 43, 37, 31, 28, 25, 24, 23},
35};
36
37#define DATADUR_B 10
38#define DATADUR_A 11
39
40static const u8 vnt_phy_signal[] = {
41 0x00,
42 0x01,
43 0x02,
44 0x03,
45 0x8b,
46 0x8f,
47 0x8a,
48 0x8e,
49 0x89,
50 0x8d,
51 0x88,
52 0x8c
53};
54
55static struct vnt_usb_send_context
56 *vnt_get_free_context(struct vnt_private *priv)
57{
58 struct vnt_usb_send_context *context = NULL;
59 int ii;
60
61 dev_dbg(&priv->usb->dev, "%s\n", __func__);
62
63 for (ii = 0; ii < priv->num_tx_context; ii++) {
64 if (!priv->tx_context[ii])
65 return NULL;
66
67 context = priv->tx_context[ii];
68 if (!context->in_use) {
69 context->in_use = true;
70 return context;
71 }
72 }
73
74 if (ii == priv->num_tx_context) {
75 dev_dbg(&priv->usb->dev, "%s No Free Tx Context\n", __func__);
76
77 ieee80211_stop_queues(priv->hw);
78 }
79
80 return NULL;
81}
82
83
84static void vnt_get_phy_field(struct vnt_private *priv, u32 frame_length,
85 u16 tx_rate, u8 pkt_type,
86 struct vnt_phy_field *phy)
87{
88 u32 bit_count;
89 u32 count = 0;
90 u32 tmp;
91 int ext_bit;
92 int i;
93 u8 mask = 0;
94 u8 preamble_type = priv->preamble_type;
95
96 bit_count = frame_length * 8;
97 ext_bit = false;
98
99 switch (tx_rate) {
100 case RATE_1M:
101 count = bit_count;
102 break;
103 case RATE_2M:
104 count = bit_count / 2;
105 break;
106 case RATE_5M:
107 count = DIV_ROUND_UP(bit_count * 10, 55);
108 break;
109 case RATE_11M:
110 count = bit_count / 11;
111 tmp = count * 11;
112
113 if (tmp != bit_count) {
114 count++;
115
116 if ((bit_count - tmp) <= 3)
117 ext_bit = true;
118 }
119
120 break;
121 }
122
123 if (tx_rate > RATE_11M) {
124 if (pkt_type == PK_TYPE_11A)
125 mask = BIT(4);
126 } else if (tx_rate > RATE_1M) {
127 if (preamble_type == PREAMBLE_SHORT)
128 mask = BIT(3);
129 }
130
131 i = tx_rate > RATE_54M ? RATE_54M : tx_rate;
132 phy->signal = vnt_phy_signal[i] | mask;
133 phy->service = 0x00;
134
135 if (pkt_type == PK_TYPE_11B) {
136 if (ext_bit)
137 phy->service |= 0x80;
138 phy->len = cpu_to_le16((u16)count);
139 } else {
140 phy->len = cpu_to_le16((u16)frame_length);
141 }
142}
143
144static __le16 vnt_time_stamp_off(struct vnt_private *priv, u16 rate)
145{
146 return cpu_to_le16(vnt_time_stampoff[priv->preamble_type % 2]
147 [rate % MAX_RATE]);
148}
149
150static __le16 vnt_rxtx_rsvtime_le16(struct vnt_usb_send_context *context)
151{
152 struct vnt_private *priv = context->priv;
153 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
154 struct ieee80211_rate *rate = ieee80211_get_tx_rate(priv->hw, info);
155
156 return ieee80211_generic_frame_duration(priv->hw,
157 info->control.vif, info->band,
158 context->frame_len,
159 rate);
160}
161
162static __le16 vnt_get_rts_duration(struct vnt_usb_send_context *context)
163{
164 struct vnt_private *priv = context->priv;
165 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
166
167 return ieee80211_rts_duration(priv->hw, priv->vif,
168 context->frame_len, info);
169}
170
171static __le16 vnt_get_cts_duration(struct vnt_usb_send_context *context)
172{
173 struct vnt_private *priv = context->priv;
174 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(context->skb);
175
176 return ieee80211_ctstoself_duration(priv->hw, priv->vif,
177 context->frame_len, info);
178}
179
180static void vnt_rxtx_datahead_g(struct vnt_usb_send_context *tx_context,
181 struct vnt_tx_datahead_g *buf)
182{
183 struct vnt_private *priv = tx_context->priv;
184 struct ieee80211_hdr *hdr =
185 (struct ieee80211_hdr *)tx_context->skb->data;
186 u32 frame_len = tx_context->frame_len;
187 u16 rate = tx_context->tx_rate;
188
189
190 vnt_get_phy_field(priv, frame_len, rate, tx_context->pkt_type, &buf->a);
191 vnt_get_phy_field(priv, frame_len, priv->top_cck_basic_rate,
192 PK_TYPE_11B, &buf->b);
193
194
195 buf->duration_a = hdr->duration_id;
196 buf->duration_b = hdr->duration_id;
197 buf->time_stamp_off_a = vnt_time_stamp_off(priv, rate);
198 buf->time_stamp_off_b = vnt_time_stamp_off(priv,
199 priv->top_cck_basic_rate);
200}
201
202static void vnt_rxtx_datahead_ab(struct vnt_usb_send_context *tx_context,
203 struct vnt_tx_datahead_ab *buf)
204{
205 struct vnt_private *priv = tx_context->priv;
206 struct ieee80211_hdr *hdr =
207 (struct ieee80211_hdr *)tx_context->skb->data;
208 u32 frame_len = tx_context->frame_len;
209 u16 rate = tx_context->tx_rate;
210
211
212 vnt_get_phy_field(priv, frame_len, rate,
213 tx_context->pkt_type, &buf->ab);
214
215
216 buf->duration = hdr->duration_id;
217 buf->time_stamp_off = vnt_time_stamp_off(priv, rate);
218}
219
220static void vnt_fill_ieee80211_rts(struct vnt_usb_send_context *tx_context,
221 struct ieee80211_rts *rts, __le16 duration)
222{
223 struct ieee80211_hdr *hdr =
224 (struct ieee80211_hdr *)tx_context->skb->data;
225
226 rts->duration = duration;
227 rts->frame_control =
228 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
229
230 ether_addr_copy(rts->ra, hdr->addr1);
231 ether_addr_copy(rts->ta, hdr->addr2);
232}
233
234static void vnt_rxtx_rts_g_head(struct vnt_usb_send_context *tx_context,
235 struct vnt_rts_g *buf)
236{
237 struct vnt_private *priv = tx_context->priv;
238 u16 rts_frame_len = 20;
239
240 vnt_get_phy_field(priv, rts_frame_len, priv->top_cck_basic_rate,
241 PK_TYPE_11B, &buf->b);
242 vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate,
243 tx_context->pkt_type, &buf->a);
244
245 buf->duration_bb = vnt_get_rts_duration(tx_context);
246 buf->duration_aa = buf->duration_bb;
247 buf->duration_ba = buf->duration_bb;
248
249 vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration_aa);
250
251 vnt_rxtx_datahead_g(tx_context, &buf->data_head);
252}
253
254static void vnt_rxtx_rts_ab_head(struct vnt_usb_send_context *tx_context,
255 struct vnt_rts_ab *buf)
256{
257 struct vnt_private *priv = tx_context->priv;
258 u16 rts_frame_len = 20;
259
260 vnt_get_phy_field(priv, rts_frame_len, priv->top_ofdm_basic_rate,
261 tx_context->pkt_type, &buf->ab);
262
263 buf->duration = vnt_get_rts_duration(tx_context);
264
265 vnt_fill_ieee80211_rts(tx_context, &buf->data, buf->duration);
266
267 vnt_rxtx_datahead_ab(tx_context, &buf->data_head);
268}
269
270static void vnt_fill_cts_head(struct vnt_usb_send_context *tx_context,
271 union vnt_tx_data_head *head)
272{
273 struct vnt_private *priv = tx_context->priv;
274 struct vnt_cts *buf = &head->cts_g;
275 u32 cts_frame_len = 14;
276
277
278 vnt_get_phy_field(priv, cts_frame_len, priv->top_cck_basic_rate,
279 PK_TYPE_11B, &buf->b);
280
281 buf->duration_ba = vnt_get_cts_duration(tx_context);
282
283 buf->data.duration = buf->duration_ba;
284 buf->data.frame_control =
285 cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
286
287 ether_addr_copy(buf->data.ra, priv->current_net_addr);
288
289 vnt_rxtx_datahead_g(tx_context, &buf->data_head);
290}
291
292
293static bool vnt_fill_txkey(struct vnt_tx_buffer *tx_buffer, struct sk_buff *skb)
294{
295 struct vnt_tx_fifo_head *fifo = &tx_buffer->fifo_head;
296 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
297 struct ieee80211_key_conf *tx_key = info->control.hw_key;
298 struct vnt_mic_hdr *mic_hdr;
299 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
300 u64 pn64;
301 u16 payload_len = skb->len;
302 u8 *iv = ((u8 *)hdr + ieee80211_get_hdrlen_from_skb(skb));
303
304
305 payload_len -= ieee80211_get_hdrlen_from_skb(skb);
306 payload_len -= tx_key->icv_len;
307
308 switch (tx_key->cipher) {
309 case WLAN_CIPHER_SUITE_WEP40:
310 case WLAN_CIPHER_SUITE_WEP104:
311 memcpy(fifo->tx_key, iv, 3);
312 memcpy(fifo->tx_key + 3, tx_key->key, tx_key->keylen);
313
314 if (tx_key->keylen == WLAN_KEY_LEN_WEP40) {
315 memcpy(fifo->tx_key + 8, iv, 3);
316 memcpy(fifo->tx_key + 11,
317 tx_key->key, WLAN_KEY_LEN_WEP40);
318 }
319
320 fifo->frag_ctl |= cpu_to_le16(FRAGCTL_LEGACY);
321 break;
322 case WLAN_CIPHER_SUITE_TKIP:
323 ieee80211_get_tkip_p2k(tx_key, skb, fifo->tx_key);
324
325 fifo->frag_ctl |= cpu_to_le16(FRAGCTL_TKIP);
326 break;
327 case WLAN_CIPHER_SUITE_CCMP:
328 if (info->control.use_cts_prot) {
329 if (info->control.use_rts)
330 mic_hdr = &tx_buffer->tx_head.tx_rts.tx.mic.hdr;
331 else
332 mic_hdr = &tx_buffer->tx_head.tx_cts.tx.mic.hdr;
333 } else {
334 mic_hdr = &tx_buffer->tx_head.tx_ab.tx.mic.hdr;
335 }
336
337 mic_hdr->id = 0x59;
338 mic_hdr->payload_len = cpu_to_be16(payload_len);
339 ether_addr_copy(mic_hdr->mic_addr2, hdr->addr2);
340
341 pn64 = atomic64_read(&tx_key->tx_pn);
342 mic_hdr->ccmp_pn[5] = pn64;
343 mic_hdr->ccmp_pn[4] = pn64 >> 8;
344 mic_hdr->ccmp_pn[3] = pn64 >> 16;
345 mic_hdr->ccmp_pn[2] = pn64 >> 24;
346 mic_hdr->ccmp_pn[1] = pn64 >> 32;
347 mic_hdr->ccmp_pn[0] = pn64 >> 40;
348
349 if (ieee80211_has_a4(hdr->frame_control))
350 mic_hdr->hlen = cpu_to_be16(28);
351 else
352 mic_hdr->hlen = cpu_to_be16(22);
353
354 ether_addr_copy(mic_hdr->addr1, hdr->addr1);
355 ether_addr_copy(mic_hdr->addr2, hdr->addr2);
356 ether_addr_copy(mic_hdr->addr3, hdr->addr3);
357
358 mic_hdr->frame_control = cpu_to_le16(
359 le16_to_cpu(hdr->frame_control) & 0xc78f);
360 mic_hdr->seq_ctrl = cpu_to_le16(
361 le16_to_cpu(hdr->seq_ctrl) & 0xf);
362
363 if (ieee80211_has_a4(hdr->frame_control))
364 ether_addr_copy(mic_hdr->addr4, hdr->addr4);
365
366 memcpy(fifo->tx_key, tx_key->key, WLAN_KEY_LEN_CCMP);
367
368 fifo->frag_ctl |= cpu_to_le16(FRAGCTL_AES);
369 return true;
370 default:
371 break;
372 }
373
374 return false;
375}
376
377static void vnt_rxtx_rts(struct vnt_usb_send_context *tx_context)
378{
379 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
380 struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
381 union vnt_tx_head *tx_head = &tx_buffer->tx_head;
382 struct vnt_rrv_time_rts *buf = &tx_head->tx_rts.rts;
383 union vnt_tx_data_head *head = &tx_head->tx_rts.tx.head;
384
385 buf->rts_rrv_time_aa = vnt_get_rts_duration(tx_context);
386 buf->rts_rrv_time_ba = buf->rts_rrv_time_aa;
387 buf->rts_rrv_time_bb = buf->rts_rrv_time_aa;
388
389 buf->rrv_time_a = vnt_rxtx_rsvtime_le16(tx_context);
390 buf->rrv_time_b = buf->rrv_time_a;
391
392 if (info->control.hw_key) {
393 if (vnt_fill_txkey(tx_buffer, tx_context->skb))
394 head = &tx_head->tx_rts.tx.mic.head;
395 }
396
397 vnt_rxtx_rts_g_head(tx_context, &head->rts_g);
398}
399
400static void vnt_rxtx_cts(struct vnt_usb_send_context *tx_context)
401{
402 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
403 struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
404 union vnt_tx_head *tx_head = &tx_buffer->tx_head;
405 struct vnt_rrv_time_cts *buf = &tx_head->tx_cts.cts;
406 union vnt_tx_data_head *head = &tx_head->tx_cts.tx.head;
407
408 buf->rrv_time_a = vnt_rxtx_rsvtime_le16(tx_context);
409 buf->rrv_time_b = buf->rrv_time_a;
410
411 buf->cts_rrv_time_ba = vnt_get_cts_duration(tx_context);
412
413 if (info->control.hw_key) {
414 if (vnt_fill_txkey(tx_buffer, tx_context->skb))
415 head = &tx_head->tx_cts.tx.mic.head;
416 }
417
418 vnt_fill_cts_head(tx_context, head);
419}
420
421static void vnt_rxtx_ab(struct vnt_usb_send_context *tx_context)
422{
423 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
424 struct vnt_tx_buffer *tx_buffer = tx_context->tx_buffer;
425 union vnt_tx_head *tx_head = &tx_buffer->tx_head;
426 struct vnt_rrv_time_ab *buf = &tx_head->tx_ab.ab;
427 union vnt_tx_data_head *head = &tx_head->tx_ab.tx.head;
428
429 buf->rrv_time = vnt_rxtx_rsvtime_le16(tx_context);
430
431 if (info->control.hw_key) {
432 if (vnt_fill_txkey(tx_buffer, tx_context->skb))
433 head = &tx_head->tx_ab.tx.mic.head;
434 }
435
436 if (info->control.use_rts) {
437 buf->rts_rrv_time = vnt_get_rts_duration(tx_context);
438
439 vnt_rxtx_rts_ab_head(tx_context, &head->rts_ab);
440
441 return;
442 }
443
444 vnt_rxtx_datahead_ab(tx_context, &head->data_head_ab);
445}
446
447static void vnt_generate_tx_parameter(struct vnt_usb_send_context *tx_context)
448{
449 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_context->skb);
450
451 if (info->control.use_cts_prot) {
452 if (info->control.use_rts) {
453 vnt_rxtx_rts(tx_context);
454
455 return;
456 }
457
458 vnt_rxtx_cts(tx_context);
459
460 return;
461 }
462
463 vnt_rxtx_ab(tx_context);
464}
465
466static u16 vnt_get_hdr_size(struct ieee80211_tx_info *info)
467{
468 u16 size = sizeof(struct vnt_tx_datahead_ab);
469
470 if (info->control.use_cts_prot) {
471 if (info->control.use_rts)
472 size = sizeof(struct vnt_rts_g);
473 else
474 size = sizeof(struct vnt_cts);
475 } else if (info->control.use_rts) {
476 size = sizeof(struct vnt_rts_ab);
477 }
478
479 if (info->control.hw_key) {
480 if (info->control.hw_key->cipher == WLAN_CIPHER_SUITE_CCMP)
481 size += sizeof(struct vnt_mic_hdr);
482 }
483
484
485 if (info->control.use_cts_prot) {
486 if (info->control.use_rts)
487 size += sizeof(struct vnt_rrv_time_rts);
488 else
489 size += sizeof(struct vnt_rrv_time_cts);
490 } else {
491 size += sizeof(struct vnt_rrv_time_ab);
492 }
493
494 size += sizeof(struct vnt_tx_fifo_head);
495
496 return size;
497}
498
499int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
500{
501 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
502 struct ieee80211_tx_rate *tx_rate = &info->control.rates[0];
503 struct ieee80211_rate *rate;
504 struct ieee80211_hdr *hdr;
505 struct vnt_tx_buffer *tx_buffer;
506 struct vnt_tx_fifo_head *tx_buffer_head;
507 struct vnt_usb_send_context *tx_context;
508 unsigned long flags;
509 u8 pkt_type;
510
511 hdr = (struct ieee80211_hdr *)(skb->data);
512
513 rate = ieee80211_get_tx_rate(priv->hw, info);
514
515 if (rate->hw_value > RATE_11M) {
516 if (info->band == NL80211_BAND_5GHZ) {
517 pkt_type = PK_TYPE_11A;
518 } else {
519 if (tx_rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
520 if (priv->basic_rates & VNT_B_RATES)
521 pkt_type = PK_TYPE_11GB;
522 else
523 pkt_type = PK_TYPE_11GA;
524 } else {
525 pkt_type = PK_TYPE_11A;
526 }
527 }
528 } else {
529 pkt_type = PK_TYPE_11B;
530 }
531
532 spin_lock_irqsave(&priv->lock, flags);
533
534 tx_context = vnt_get_free_context(priv);
535 if (!tx_context) {
536 dev_dbg(&priv->usb->dev, "%s No free context\n", __func__);
537 spin_unlock_irqrestore(&priv->lock, flags);
538 return -ENOMEM;
539 }
540
541 tx_context->pkt_type = pkt_type;
542 tx_context->frame_len = skb->len + 4;
543 tx_context->tx_rate = rate->hw_value;
544
545 spin_unlock_irqrestore(&priv->lock, flags);
546
547 tx_context->skb = skb_clone(skb, GFP_ATOMIC);
548 if (!tx_context->skb) {
549 tx_context->in_use = false;
550 return -ENOMEM;
551 }
552
553 tx_buffer = skb_push(skb, vnt_get_hdr_size(info));
554 tx_context->tx_buffer = tx_buffer;
555 tx_buffer_head = &tx_buffer->fifo_head;
556
557 tx_context->type = CONTEXT_DATA_PACKET;
558
559
560 if (pkt_type == PK_TYPE_11A)
561 tx_buffer_head->fifo_ctl = 0;
562 else if (pkt_type == PK_TYPE_11B)
563 tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11B);
564 else if (pkt_type == PK_TYPE_11GB)
565 tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GB);
566 else if (pkt_type == PK_TYPE_11GA)
567 tx_buffer_head->fifo_ctl = cpu_to_le16(FIFOCTL_11GA);
568
569 if (!ieee80211_is_data(hdr->frame_control)) {
570 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_GENINT |
571 FIFOCTL_ISDMA0);
572 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_TMOEN);
573
574 tx_buffer_head->time_stamp =
575 cpu_to_le16(DEFAULT_MGN_LIFETIME_RES_64us);
576 } else {
577 tx_buffer_head->time_stamp =
578 cpu_to_le16(DEFAULT_MSDU_LIFETIME_RES_64us);
579 }
580
581 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
582 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_NEEDACK);
583
584 if (ieee80211_has_retry(hdr->frame_control))
585 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LRETRY);
586
587 if (info->control.use_rts)
588 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_RTS);
589
590 if (ieee80211_has_a4(hdr->frame_control))
591 tx_buffer_head->fifo_ctl |= cpu_to_le16(FIFOCTL_LHEAD);
592
593 tx_buffer_head->frag_ctl =
594 cpu_to_le16(ieee80211_hdrlen(hdr->frame_control) << 10);
595
596 if (info->control.hw_key)
597 tx_context->frame_len += info->control.hw_key->icv_len;
598
599 tx_buffer_head->current_rate = cpu_to_le16(rate->hw_value);
600
601 vnt_generate_tx_parameter(tx_context);
602
603 tx_buffer_head->frag_ctl |= cpu_to_le16(FRAGCTL_NONFRAG);
604
605 priv->seq_counter = (le16_to_cpu(hdr->seq_ctrl) &
606 IEEE80211_SCTL_SEQ) >> 4;
607
608 spin_lock_irqsave(&priv->lock, flags);
609
610 if (vnt_tx_context(priv, tx_context, skb)) {
611 dev_kfree_skb(tx_context->skb);
612 spin_unlock_irqrestore(&priv->lock, flags);
613 return -EIO;
614 }
615
616 dev_kfree_skb(skb);
617
618 spin_unlock_irqrestore(&priv->lock, flags);
619
620 return 0;
621}
622
623static int vnt_beacon_xmit(struct vnt_private *priv, struct sk_buff *skb)
624{
625 struct vnt_tx_short_buf_head *short_head;
626 struct ieee80211_tx_info *info;
627 struct vnt_usb_send_context *context;
628 struct ieee80211_mgmt *mgmt_hdr;
629 unsigned long flags;
630 u32 frame_size = skb->len + 4;
631 u16 current_rate;
632
633 spin_lock_irqsave(&priv->lock, flags);
634
635 context = vnt_get_free_context(priv);
636 if (!context) {
637 dev_dbg(&priv->usb->dev, "%s No free context!\n", __func__);
638 spin_unlock_irqrestore(&priv->lock, flags);
639 return -ENOMEM;
640 }
641
642 context->skb = skb;
643
644 spin_unlock_irqrestore(&priv->lock, flags);
645
646 mgmt_hdr = (struct ieee80211_mgmt *)skb->data;
647 short_head = skb_push(skb, sizeof(*short_head));
648
649 if (priv->bb_type == BB_TYPE_11A) {
650 current_rate = RATE_6M;
651
652
653 vnt_get_phy_field(priv, frame_size, current_rate,
654 PK_TYPE_11A, &short_head->ab);
655
656
657 short_head->time_stamp_off =
658 vnt_time_stamp_off(priv, current_rate);
659 } else {
660 current_rate = RATE_1M;
661 short_head->fifo_ctl |= cpu_to_le16(FIFOCTL_11B);
662
663
664 vnt_get_phy_field(priv, frame_size, current_rate,
665 PK_TYPE_11B, &short_head->ab);
666
667
668 short_head->time_stamp_off =
669 vnt_time_stamp_off(priv, current_rate);
670 }
671
672
673 short_head->duration = mgmt_hdr->duration;
674
675
676 mgmt_hdr->u.beacon.timestamp = 0;
677
678 info = IEEE80211_SKB_CB(skb);
679 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
680 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)mgmt_hdr;
681
682 hdr->duration_id = 0;
683 hdr->seq_ctrl = cpu_to_le16(priv->seq_counter << 4);
684 }
685
686 priv->seq_counter++;
687 if (priv->seq_counter > 0x0fff)
688 priv->seq_counter = 0;
689
690 context->type = CONTEXT_BEACON_PACKET;
691
692 spin_lock_irqsave(&priv->lock, flags);
693
694 if (vnt_tx_context(priv, context, skb))
695 ieee80211_free_txskb(priv->hw, context->skb);
696
697 spin_unlock_irqrestore(&priv->lock, flags);
698
699 return 0;
700}
701
702int vnt_beacon_make(struct vnt_private *priv, struct ieee80211_vif *vif)
703{
704 struct sk_buff *beacon;
705
706 beacon = ieee80211_beacon_get(priv->hw, vif);
707 if (!beacon)
708 return -ENOMEM;
709
710 if (vnt_beacon_xmit(priv, beacon)) {
711 ieee80211_free_txskb(priv->hw, beacon);
712 return -ENODEV;
713 }
714
715 return 0;
716}
717
718int vnt_beacon_enable(struct vnt_private *priv, struct ieee80211_vif *vif,
719 struct ieee80211_bss_conf *conf)
720{
721 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
722
723 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
724
725 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
726
727 vnt_clear_current_tsf(priv);
728
729 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
730
731 vnt_reset_next_tbtt(priv, conf->beacon_int);
732
733 return vnt_beacon_make(priv, vif);
734}
735
