3
Broadcom B43 wireless driver
5
Transmission (TX/RX) related functions.
7
Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
8
Copyright (C) 2005 Stefano Brivio <stefano.brivio@polimi.it>
9
Copyright (C) 2005, 2006 Michael Buesch <mb@bu3sch.de>
10
Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
11
Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
13
This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
15
the Free Software Foundation; either version 2 of the License, or
16
(at your option) any later version.
18
This program is distributed in the hope that it will be useful,
19
but WITHOUT ANY WARRANTY; without even the implied warranty of
20
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21
GNU General Public License for more details.
23
You should have received a copy of the GNU General Public License
24
along with this program; see the file COPYING. If not, write to
25
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
31
#include "phy_common.h"
36
/* Extract the bitrate index out of a CCK PLCP header. */
37
static int b43_plcp_get_bitrate_idx_cck(struct b43_plcp_hdr6 *plcp)
39
switch (plcp->raw[0]) {
52
/* Extract the bitrate index out of an OFDM PLCP header. */
53
static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy)
55
int base = aphy ? 0 : 4;
57
switch (plcp->raw[0] & 0xF) {
78
u8 b43_plcp_get_ratecode_cck(const u8 bitrate)
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case B43_CCK_RATE_1MB:
83
case B43_CCK_RATE_2MB:
85
case B43_CCK_RATE_5MB:
87
case B43_CCK_RATE_11MB:
94
u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
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case B43_OFDM_RATE_6MB:
99
case B43_OFDM_RATE_9MB:
101
case B43_OFDM_RATE_12MB:
103
case B43_OFDM_RATE_18MB:
105
case B43_OFDM_RATE_24MB:
107
case B43_OFDM_RATE_36MB:
109
case B43_OFDM_RATE_48MB:
111
case B43_OFDM_RATE_54MB:
118
void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
119
const u16 octets, const u8 bitrate)
121
__u8 *raw = plcp->raw;
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if (b43_is_ofdm_rate(bitrate)) {
126
d = b43_plcp_get_ratecode_ofdm(bitrate);
127
B43_WARN_ON(octets & 0xF000);
129
plcp->data = cpu_to_le32(d);
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plen = octets * 16 / bitrate;
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if ((octets * 16 % bitrate) > 0) {
136
if ((bitrate == B43_CCK_RATE_11MB)
137
&& ((octets * 8 % 11) < 4)) {
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plcp->data |= cpu_to_le32(plen << 16);
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raw[0] = b43_plcp_get_ratecode_cck(bitrate);
148
static u8 b43_calc_fallback_rate(u8 bitrate)
151
case B43_CCK_RATE_1MB:
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return B43_CCK_RATE_1MB;
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case B43_CCK_RATE_2MB:
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return B43_CCK_RATE_1MB;
155
case B43_CCK_RATE_5MB:
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return B43_CCK_RATE_2MB;
157
case B43_CCK_RATE_11MB:
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return B43_CCK_RATE_5MB;
159
case B43_OFDM_RATE_6MB:
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return B43_CCK_RATE_5MB;
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case B43_OFDM_RATE_9MB:
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return B43_OFDM_RATE_6MB;
163
case B43_OFDM_RATE_12MB:
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return B43_OFDM_RATE_9MB;
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case B43_OFDM_RATE_18MB:
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return B43_OFDM_RATE_12MB;
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case B43_OFDM_RATE_24MB:
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return B43_OFDM_RATE_18MB;
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case B43_OFDM_RATE_36MB:
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return B43_OFDM_RATE_24MB;
171
case B43_OFDM_RATE_48MB:
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return B43_OFDM_RATE_36MB;
173
case B43_OFDM_RATE_54MB:
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return B43_OFDM_RATE_48MB;
180
/* Generate a TX data header. */
181
int b43_generate_txhdr(struct b43_wldev *dev,
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struct sk_buff *skb_frag,
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struct ieee80211_tx_info *info,
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const unsigned char *fragment_data = skb_frag->data;
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unsigned int fragment_len = skb_frag->len;
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struct b43_txhdr *txhdr = (struct b43_txhdr *)_txhdr;
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const struct b43_phy *phy = &dev->phy;
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const struct ieee80211_hdr *wlhdr =
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(const struct ieee80211_hdr *)fragment_data;
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int use_encryption = !!info->control.hw_key;
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__le16 fctl = wlhdr->frame_control;
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struct ieee80211_rate *fbrate;
197
int rate_ofdm, rate_fb_ofdm;
198
unsigned int plcp_fragment_len;
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struct ieee80211_rate *txrate;
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struct ieee80211_tx_rate *rates;
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memset(txhdr, 0, sizeof(*txhdr));
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txrate = ieee80211_get_tx_rate(dev->wl->hw, info);
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rate = txrate ? txrate->hw_value : B43_CCK_RATE_1MB;
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rate_ofdm = b43_is_ofdm_rate(rate);
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fbrate = ieee80211_get_alt_retry_rate(dev->wl->hw, info, 0) ? : txrate;
211
rate_fb = fbrate->hw_value;
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rate_fb_ofdm = b43_is_ofdm_rate(rate_fb);
215
txhdr->phy_rate = b43_plcp_get_ratecode_ofdm(rate);
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txhdr->phy_rate = b43_plcp_get_ratecode_cck(rate);
218
txhdr->mac_frame_ctl = wlhdr->frame_control;
219
memcpy(txhdr->tx_receiver, wlhdr->addr1, 6);
221
/* Calculate duration for fallback rate */
222
if ((rate_fb == rate) ||
223
(wlhdr->duration_id & cpu_to_le16(0x8000)) ||
224
(wlhdr->duration_id == cpu_to_le16(0))) {
225
/* If the fallback rate equals the normal rate or the
226
* dur_id field contains an AID, CFP magic or 0,
227
* use the original dur_id field. */
228
txhdr->dur_fb = wlhdr->duration_id;
230
txhdr->dur_fb = ieee80211_generic_frame_duration(
231
dev->wl->hw, info->control.vif, fragment_len, fbrate);
234
plcp_fragment_len = fragment_len + FCS_LEN;
235
if (use_encryption) {
236
u8 key_idx = info->control.hw_key->hw_key_idx;
241
B43_WARN_ON(key_idx >= ARRAY_SIZE(dev->key));
242
key = &(dev->key[key_idx]);
244
if (unlikely(!key->keyconf)) {
245
/* This key is invalid. This might only happen
246
* in a short timeframe after machine resume before
247
* we were able to reconfigure keys.
248
* Drop this packet completely. Do not transmit it
249
* unencrypted to avoid leaking information. */
253
/* Hardware appends ICV. */
254
plcp_fragment_len += info->control.hw_key->icv_len;
256
key_idx = b43_kidx_to_fw(dev, key_idx);
257
mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) &
259
mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) &
261
wlhdr_len = ieee80211_hdrlen(fctl);
262
if (key->algorithm == B43_SEC_ALGO_TKIP) {
265
/* we give the phase1key and iv16 here, the key is stored in
266
* shm. With that the hardware can do phase 2 and encryption.
268
ieee80211_get_tkip_key(info->control.hw_key, skb_frag,
269
IEEE80211_TKIP_P1_KEY, (u8*)phase1key);
270
/* phase1key is in host endian. Copy to little-endian txhdr->iv. */
271
for (i = 0; i < 5; i++) {
272
txhdr->iv[i * 2 + 0] = phase1key[i];
273
txhdr->iv[i * 2 + 1] = phase1key[i] >> 8;
276
memcpy(txhdr->iv + 10, ((u8 *) wlhdr) + wlhdr_len, 3);
278
iv_len = min((size_t) info->control.hw_key->iv_len,
279
ARRAY_SIZE(txhdr->iv));
280
memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
283
if (b43_is_old_txhdr_format(dev)) {
284
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp),
285
plcp_fragment_len, rate);
287
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
288
plcp_fragment_len, rate);
290
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
291
plcp_fragment_len, rate_fb);
293
/* Extra Frame Types */
295
extra_ft |= B43_TXH_EFT_FB_OFDM;
297
extra_ft |= B43_TXH_EFT_FB_CCK;
299
/* Set channel radio code. Note that the micrcode ORs 0x100 to
300
* this value before comparing it to the value in SHM, if this
303
txhdr->chan_radio_code = phy->channel;
305
/* PHY TX Control word */
307
phy_ctl |= B43_TXH_PHY_ENC_OFDM;
309
phy_ctl |= B43_TXH_PHY_ENC_CCK;
310
if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
311
phy_ctl |= B43_TXH_PHY_SHORTPRMBL;
313
switch (b43_ieee80211_antenna_sanitize(dev, info->antenna_sel_tx)) {
314
case 0: /* Default */
315
phy_ctl |= B43_TXH_PHY_ANT01AUTO;
317
case 1: /* Antenna 0 */
318
phy_ctl |= B43_TXH_PHY_ANT0;
320
case 2: /* Antenna 1 */
321
phy_ctl |= B43_TXH_PHY_ANT1;
323
case 3: /* Antenna 2 */
324
phy_ctl |= B43_TXH_PHY_ANT2;
326
case 4: /* Antenna 3 */
327
phy_ctl |= B43_TXH_PHY_ANT3;
333
rates = info->control.rates;
335
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
336
mac_ctl |= B43_TXH_MAC_ACK;
337
/* use hardware sequence counter as the non-TID counter */
338
if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
339
mac_ctl |= B43_TXH_MAC_HWSEQ;
340
if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
341
mac_ctl |= B43_TXH_MAC_STMSDU;
342
if (phy->type == B43_PHYTYPE_A)
343
mac_ctl |= B43_TXH_MAC_5GHZ;
345
/* Overwrite rates[0].count to make the retry calculation
346
* in the tx status easier. need the actual retry limit to
347
* detect whether the fallback rate was used.
349
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
350
(rates[0].count <= dev->wl->hw->conf.long_frame_max_tx_count)) {
351
rates[0].count = dev->wl->hw->conf.long_frame_max_tx_count;
352
mac_ctl |= B43_TXH_MAC_LONGFRAME;
354
rates[0].count = dev->wl->hw->conf.short_frame_max_tx_count;
357
/* Generate the RTS or CTS-to-self frame */
358
if ((rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) ||
359
(rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) {
361
struct ieee80211_hdr *hdr;
362
int rts_rate, rts_rate_fb;
363
int rts_rate_ofdm, rts_rate_fb_ofdm;
364
struct b43_plcp_hdr6 *plcp;
365
struct ieee80211_rate *rts_cts_rate;
367
rts_cts_rate = ieee80211_get_rts_cts_rate(dev->wl->hw, info);
369
rts_rate = rts_cts_rate ? rts_cts_rate->hw_value : B43_CCK_RATE_1MB;
370
rts_rate_ofdm = b43_is_ofdm_rate(rts_rate);
371
rts_rate_fb = b43_calc_fallback_rate(rts_rate);
372
rts_rate_fb_ofdm = b43_is_ofdm_rate(rts_rate_fb);
374
if (rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
375
struct ieee80211_cts *cts;
377
if (b43_is_old_txhdr_format(dev)) {
378
cts = (struct ieee80211_cts *)
379
(txhdr->old_format.rts_frame);
381
cts = (struct ieee80211_cts *)
382
(txhdr->new_format.rts_frame);
384
ieee80211_ctstoself_get(dev->wl->hw, info->control.vif,
385
fragment_data, fragment_len,
387
mac_ctl |= B43_TXH_MAC_SENDCTS;
388
len = sizeof(struct ieee80211_cts);
390
struct ieee80211_rts *rts;
392
if (b43_is_old_txhdr_format(dev)) {
393
rts = (struct ieee80211_rts *)
394
(txhdr->old_format.rts_frame);
396
rts = (struct ieee80211_rts *)
397
(txhdr->new_format.rts_frame);
399
ieee80211_rts_get(dev->wl->hw, info->control.vif,
400
fragment_data, fragment_len,
402
mac_ctl |= B43_TXH_MAC_SENDRTS;
403
len = sizeof(struct ieee80211_rts);
407
/* Generate the PLCP headers for the RTS/CTS frame */
408
if (b43_is_old_txhdr_format(dev))
409
plcp = &txhdr->old_format.rts_plcp;
411
plcp = &txhdr->new_format.rts_plcp;
412
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
414
plcp = &txhdr->rts_plcp_fb;
415
b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
418
if (b43_is_old_txhdr_format(dev)) {
419
hdr = (struct ieee80211_hdr *)
420
(&txhdr->old_format.rts_frame);
422
hdr = (struct ieee80211_hdr *)
423
(&txhdr->new_format.rts_frame);
425
txhdr->rts_dur_fb = hdr->duration_id;
428
extra_ft |= B43_TXH_EFT_RTS_OFDM;
429
txhdr->phy_rate_rts =
430
b43_plcp_get_ratecode_ofdm(rts_rate);
432
extra_ft |= B43_TXH_EFT_RTS_CCK;
433
txhdr->phy_rate_rts =
434
b43_plcp_get_ratecode_cck(rts_rate);
436
if (rts_rate_fb_ofdm)
437
extra_ft |= B43_TXH_EFT_RTSFB_OFDM;
439
extra_ft |= B43_TXH_EFT_RTSFB_CCK;
443
if (b43_is_old_txhdr_format(dev))
444
txhdr->old_format.cookie = cpu_to_le16(cookie);
446
txhdr->new_format.cookie = cpu_to_le16(cookie);
448
/* Apply the bitfields */
449
txhdr->mac_ctl = cpu_to_le32(mac_ctl);
450
txhdr->phy_ctl = cpu_to_le16(phy_ctl);
451
txhdr->extra_ft = extra_ft;
456
static s8 b43_rssi_postprocess(struct b43_wldev *dev,
457
u8 in_rssi, int ofdm,
458
int adjust_2053, int adjust_2050)
460
struct b43_phy *phy = &dev->phy;
461
struct b43_phy_g *gphy = phy->g;
464
switch (phy->radio_ver) {
477
if (dev->dev->bus->sprom.
478
boardflags_lo & B43_BFL_RSSI) {
481
B43_WARN_ON(phy->type != B43_PHYTYPE_G);
482
tmp = gphy->nrssi_lt[in_rssi];
494
if (phy->type == B43_PHYTYPE_G && adjust_2050)
520
static s8 b43_rssinoise_postprocess(struct b43_wldev *dev, u8 in_rssi)
522
struct b43_phy *phy = &dev->phy;
525
if (phy->type == B43_PHYTYPE_A) {
526
//TODO: Incomplete specs.
529
ret = b43_rssi_postprocess(dev, in_rssi, 0, 1, 1);
535
void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
537
struct ieee80211_rx_status status;
538
struct b43_plcp_hdr6 *plcp;
539
struct ieee80211_hdr *wlhdr;
540
const struct b43_rxhdr_fw4 *rxhdr = _rxhdr;
542
u16 phystat0, phystat3, chanstat, mactime;
548
memset(&status, 0, sizeof(status));
550
/* Get metadata about the frame from the header. */
551
phystat0 = le16_to_cpu(rxhdr->phy_status0);
552
phystat3 = le16_to_cpu(rxhdr->phy_status3);
553
macstat = le32_to_cpu(rxhdr->mac_status);
554
mactime = le16_to_cpu(rxhdr->mac_time);
555
chanstat = le16_to_cpu(rxhdr->channel);
556
phytype = chanstat & B43_RX_CHAN_PHYTYPE;
558
if (unlikely(macstat & B43_RX_MAC_FCSERR)) {
559
dev->wl->ieee_stats.dot11FCSErrorCount++;
560
status.flag |= RX_FLAG_FAILED_FCS_CRC;
562
if (unlikely(phystat0 & (B43_RX_PHYST0_PLCPHCF | B43_RX_PHYST0_PLCPFV)))
563
status.flag |= RX_FLAG_FAILED_PLCP_CRC;
564
if (phystat0 & B43_RX_PHYST0_SHORTPRMBL)
565
status.flag |= RX_FLAG_SHORTPRE;
566
if (macstat & B43_RX_MAC_DECERR) {
567
/* Decryption with the given key failed.
568
* Drop the packet. We also won't be able to decrypt it with
569
* the key in software. */
573
/* Skip PLCP and padding */
574
padding = (macstat & B43_RX_MAC_PADDING) ? 2 : 0;
575
if (unlikely(skb->len < (sizeof(struct b43_plcp_hdr6) + padding))) {
576
b43dbg(dev->wl, "RX: Packet size underrun (1)\n");
579
plcp = (struct b43_plcp_hdr6 *)(skb->data + padding);
580
skb_pull(skb, sizeof(struct b43_plcp_hdr6) + padding);
581
/* The skb contains the Wireless Header + payload data now */
582
if (unlikely(skb->len < (2 + 2 + 6 /*minimum hdr */ + FCS_LEN))) {
583
b43dbg(dev->wl, "RX: Packet size underrun (2)\n");
586
wlhdr = (struct ieee80211_hdr *)(skb->data);
587
fctl = wlhdr->frame_control;
589
if (macstat & B43_RX_MAC_DEC) {
593
keyidx = ((macstat & B43_RX_MAC_KEYIDX)
594
>> B43_RX_MAC_KEYIDX_SHIFT);
595
/* We must adjust the key index here. We want the "physical"
596
* key index, but the ucode passed it slightly different.
598
keyidx = b43_kidx_to_raw(dev, keyidx);
599
B43_WARN_ON(keyidx >= ARRAY_SIZE(dev->key));
601
if (dev->key[keyidx].algorithm != B43_SEC_ALGO_NONE) {
602
wlhdr_len = ieee80211_hdrlen(fctl);
603
if (unlikely(skb->len < (wlhdr_len + 3))) {
605
"RX: Packet size underrun (3)\n");
608
status.flag |= RX_FLAG_DECRYPTED;
612
/* Link quality statistics */
613
status.noise = dev->stats.link_noise;
614
if ((chanstat & B43_RX_CHAN_PHYTYPE) == B43_PHYTYPE_N) {
615
// s8 rssi = max(rxhdr->power0, rxhdr->power1);
616
//TODO: Find out what the rssi value is (dBm or percentage?)
617
// and also find out what the maximum possible value is.
618
// Fill status.ssi and status.signal fields.
620
status.signal = b43_rssi_postprocess(dev, rxhdr->jssi,
621
(phystat0 & B43_RX_PHYST0_OFDM),
622
(phystat0 & B43_RX_PHYST0_GAINCTL),
623
(phystat3 & B43_RX_PHYST3_TRSTATE));
626
if (phystat0 & B43_RX_PHYST0_OFDM)
627
status.rate_idx = b43_plcp_get_bitrate_idx_ofdm(plcp,
628
phytype == B43_PHYTYPE_A);
630
status.rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
631
if (unlikely(status.rate_idx == -1)) {
632
/* PLCP seems to be corrupted.
633
* Drop the frame, if we are not interested in corrupted frames. */
634
if (!(dev->wl->filter_flags & FIF_PLCPFAIL))
637
status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
640
* All frames on monitor interfaces and beacons always need a full
641
* 64-bit timestamp. Monitor interfaces need it for diagnostic
642
* purposes and beacons for IBSS merging.
643
* This code assumes we get to process the packet within 16 bits
644
* of timestamp, i.e. about 65 milliseconds after the PHY received
647
if (ieee80211_is_beacon(fctl) || dev->wl->radiotap_enabled) {
650
b43_tsf_read(dev, &status.mactime);
651
low_mactime_now = status.mactime;
652
status.mactime = status.mactime & ~0xFFFFULL;
653
status.mactime += mactime;
654
if (low_mactime_now <= mactime)
655
status.mactime -= 0x10000;
656
status.flag |= RX_FLAG_TSFT;
659
chanid = (chanstat & B43_RX_CHAN_ID) >> B43_RX_CHAN_ID_SHIFT;
660
switch (chanstat & B43_RX_CHAN_PHYTYPE) {
662
status.band = IEEE80211_BAND_5GHZ;
664
/* FIXME: We don't really know which value the "chanid" contains.
665
* So the following assignment might be wrong. */
666
status.freq = b43_channel_to_freq_5ghz(chanid);
669
status.band = IEEE80211_BAND_2GHZ;
670
/* chanid is the radio channel cookie value as used
671
* to tune the radio. */
672
status.freq = chanid + 2400;
676
/* chanid is the SHM channel cookie. Which is the plain
677
* channel number in b43. */
678
if (chanstat & B43_RX_CHAN_5GHZ) {
679
status.band = IEEE80211_BAND_5GHZ;
680
status.freq = b43_freq_to_channel_5ghz(chanid);
682
status.band = IEEE80211_BAND_2GHZ;
683
status.freq = b43_freq_to_channel_2ghz(chanid);
691
memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
692
ieee80211_rx_ni(dev->wl->hw, skb);
699
b43dbg(dev->wl, "RX: Packet dropped\n");
700
dev_kfree_skb_any(skb);
703
void b43_handle_txstatus(struct b43_wldev *dev,
704
const struct b43_txstatus *status)
706
b43_debugfs_log_txstat(dev, status);
708
if (status->intermediate)
710
if (status->for_ampdu)
713
dev->wl->ieee_stats.dot11ACKFailureCount++;
714
if (status->rts_count) {
715
if (status->rts_count == 0xF) //FIXME
716
dev->wl->ieee_stats.dot11RTSFailureCount++;
718
dev->wl->ieee_stats.dot11RTSSuccessCount++;
721
if (b43_using_pio_transfers(dev))
722
b43_pio_handle_txstatus(dev, status);
724
b43_dma_handle_txstatus(dev, status);
726
b43_phy_txpower_check(dev, 0);
729
/* Fill out the mac80211 TXstatus report based on the b43-specific
730
* txstatus report data. This returns a boolean whether the frame was
731
* successfully transmitted. */
732
bool b43_fill_txstatus_report(struct b43_wldev *dev,
733
struct ieee80211_tx_info *report,
734
const struct b43_txstatus *status)
736
bool frame_success = 1;
739
/* preserve the confiured retry limit before clearing the status
740
* The xmit function has overwritten the rc's value with the actual
741
* retry limit done by the hardware */
742
retry_limit = report->status.rates[0].count;
743
ieee80211_tx_info_clear_status(report);
746
/* The frame was ACKed. */
747
report->flags |= IEEE80211_TX_STAT_ACK;
749
/* The frame was not ACKed... */
750
if (!(report->flags & IEEE80211_TX_CTL_NO_ACK)) {
751
/* ...but we expected an ACK. */
755
if (status->frame_count == 0) {
756
/* The frame was not transmitted at all. */
757
report->status.rates[0].count = 0;
758
} else if (status->rts_count > dev->wl->hw->conf.short_frame_max_tx_count) {
760
* If the short retries (RTS, not data frame) have exceeded
761
* the limit, the hw will not have tried the selected rate,
762
* but will have used the fallback rate instead.
763
* Don't let the rate control count attempts for the selected
764
* rate in this case, otherwise the statistics will be off.
766
report->status.rates[0].count = 0;
767
report->status.rates[1].count = status->frame_count;
769
if (status->frame_count > retry_limit) {
770
report->status.rates[0].count = retry_limit;
771
report->status.rates[1].count = status->frame_count -
775
report->status.rates[0].count = status->frame_count;
776
report->status.rates[1].idx = -1;
780
return frame_success;
783
/* Stop any TX operation on the device (suspend the hardware queues) */
784
void b43_tx_suspend(struct b43_wldev *dev)
786
if (b43_using_pio_transfers(dev))
787
b43_pio_tx_suspend(dev);
789
b43_dma_tx_suspend(dev);
792
/* Resume any TX operation on the device (resume the hardware queues) */
793
void b43_tx_resume(struct b43_wldev *dev)
795
if (b43_using_pio_transfers(dev))
796
b43_pio_tx_resume(dev);
798
b43_dma_tx_resume(dev);