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e85d0918 DD |
1 | /* zd_mac.c |
2 | * | |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2 of the License, or | |
6 | * (at your option) any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
16 | */ | |
17 | ||
18 | #include <linux/netdevice.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/wireless.h> | |
21 | #include <linux/usb.h> | |
22 | #include <linux/jiffies.h> | |
23 | #include <net/ieee80211_radiotap.h> | |
24 | ||
25 | #include "zd_def.h" | |
26 | #include "zd_chip.h" | |
27 | #include "zd_mac.h" | |
28 | #include "zd_ieee80211.h" | |
29 | #include "zd_netdev.h" | |
30 | #include "zd_rf.h" | |
31 | #include "zd_util.h" | |
32 | ||
33 | static void ieee_init(struct ieee80211_device *ieee); | |
34 | static void softmac_init(struct ieee80211softmac_device *sm); | |
35 | ||
36 | int zd_mac_init(struct zd_mac *mac, | |
37 | struct net_device *netdev, | |
38 | struct usb_interface *intf) | |
39 | { | |
40 | struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); | |
41 | ||
42 | memset(mac, 0, sizeof(*mac)); | |
43 | spin_lock_init(&mac->lock); | |
44 | mac->netdev = netdev; | |
45 | ||
46 | ieee_init(ieee); | |
47 | softmac_init(ieee80211_priv(netdev)); | |
48 | zd_chip_init(&mac->chip, netdev, intf); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | static int reset_channel(struct zd_mac *mac) | |
53 | { | |
54 | int r; | |
55 | unsigned long flags; | |
56 | const struct channel_range *range; | |
57 | ||
58 | spin_lock_irqsave(&mac->lock, flags); | |
59 | range = zd_channel_range(mac->regdomain); | |
60 | if (!range->start) { | |
61 | r = -EINVAL; | |
62 | goto out; | |
63 | } | |
64 | mac->requested_channel = range->start; | |
65 | r = 0; | |
66 | out: | |
67 | spin_unlock_irqrestore(&mac->lock, flags); | |
68 | return r; | |
69 | } | |
70 | ||
71 | int zd_mac_init_hw(struct zd_mac *mac, u8 device_type) | |
72 | { | |
73 | int r; | |
74 | struct zd_chip *chip = &mac->chip; | |
75 | u8 addr[ETH_ALEN]; | |
76 | u8 default_regdomain; | |
77 | ||
78 | r = zd_chip_enable_int(chip); | |
79 | if (r) | |
80 | goto out; | |
81 | r = zd_chip_init_hw(chip, device_type); | |
82 | if (r) | |
83 | goto disable_int; | |
84 | ||
85 | zd_get_e2p_mac_addr(chip, addr); | |
86 | r = zd_write_mac_addr(chip, addr); | |
87 | if (r) | |
88 | goto disable_int; | |
89 | ZD_ASSERT(!irqs_disabled()); | |
90 | spin_lock_irq(&mac->lock); | |
91 | memcpy(mac->netdev->dev_addr, addr, ETH_ALEN); | |
92 | spin_unlock_irq(&mac->lock); | |
93 | ||
94 | r = zd_read_regdomain(chip, &default_regdomain); | |
95 | if (r) | |
96 | goto disable_int; | |
97 | if (!zd_regdomain_supported(default_regdomain)) { | |
98 | dev_dbg_f(zd_mac_dev(mac), | |
99 | "Regulatory Domain %#04x is not supported.\n", | |
100 | default_regdomain); | |
101 | r = -EINVAL; | |
102 | goto disable_int; | |
103 | } | |
104 | spin_lock_irq(&mac->lock); | |
105 | mac->regdomain = mac->default_regdomain = default_regdomain; | |
106 | spin_unlock_irq(&mac->lock); | |
107 | r = reset_channel(mac); | |
108 | if (r) | |
109 | goto disable_int; | |
110 | ||
40da08bc DD |
111 | /* We must inform the device that we are doing encryption/decryption in |
112 | * software at the moment. */ | |
113 | r = zd_set_encryption_type(chip, ENC_SNIFFER); | |
e85d0918 DD |
114 | if (r) |
115 | goto disable_int; | |
116 | ||
117 | r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain); | |
118 | if (r) | |
119 | goto disable_int; | |
120 | ||
121 | r = 0; | |
122 | disable_int: | |
123 | zd_chip_disable_int(chip); | |
124 | out: | |
125 | return r; | |
126 | } | |
127 | ||
128 | void zd_mac_clear(struct zd_mac *mac) | |
129 | { | |
130 | /* Aquire the lock. */ | |
131 | spin_lock(&mac->lock); | |
132 | spin_unlock(&mac->lock); | |
133 | zd_chip_clear(&mac->chip); | |
134 | memset(mac, 0, sizeof(*mac)); | |
135 | } | |
136 | ||
137 | static int reset_mode(struct zd_mac *mac) | |
138 | { | |
139 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
140 | struct zd_ioreq32 ioreqs[3] = { | |
71eae25e DD |
141 | { CR_RX_FILTER, RX_FILTER_BEACON | RX_FILTER_PROBE_RESPONSE | |
142 | RX_FILTER_AUTH | RX_FILTER_ASSOC_RESPONSE | | |
143 | RX_FILTER_REASSOC_RESPONSE | | |
144 | RX_FILTER_DISASSOC }, | |
e85d0918 | 145 | { CR_SNIFFER_ON, 0U }, |
e85d0918 DD |
146 | }; |
147 | ||
148 | if (ieee->iw_mode == IW_MODE_MONITOR) { | |
149 | ioreqs[0].value = 0xffffffff; | |
150 | ioreqs[1].value = 0x1; | |
151 | ioreqs[2].value = ENC_SNIFFER; | |
152 | } | |
153 | ||
154 | return zd_iowrite32a(&mac->chip, ioreqs, 3); | |
155 | } | |
156 | ||
157 | int zd_mac_open(struct net_device *netdev) | |
158 | { | |
159 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
160 | struct zd_chip *chip = &mac->chip; | |
161 | int r; | |
162 | ||
163 | r = zd_chip_enable_int(chip); | |
164 | if (r < 0) | |
165 | goto out; | |
166 | ||
167 | r = zd_chip_set_basic_rates(chip, CR_RATES_80211B | CR_RATES_80211G); | |
168 | if (r < 0) | |
169 | goto disable_int; | |
170 | r = reset_mode(mac); | |
171 | if (r) | |
172 | goto disable_int; | |
173 | r = zd_chip_switch_radio_on(chip); | |
174 | if (r < 0) | |
175 | goto disable_int; | |
176 | r = zd_chip_set_channel(chip, mac->requested_channel); | |
177 | if (r < 0) | |
178 | goto disable_radio; | |
179 | r = zd_chip_enable_rx(chip); | |
180 | if (r < 0) | |
181 | goto disable_radio; | |
182 | r = zd_chip_enable_hwint(chip); | |
183 | if (r < 0) | |
184 | goto disable_rx; | |
185 | ||
186 | ieee80211softmac_start(netdev); | |
187 | return 0; | |
188 | disable_rx: | |
189 | zd_chip_disable_rx(chip); | |
190 | disable_radio: | |
191 | zd_chip_switch_radio_off(chip); | |
192 | disable_int: | |
193 | zd_chip_disable_int(chip); | |
194 | out: | |
195 | return r; | |
196 | } | |
197 | ||
198 | int zd_mac_stop(struct net_device *netdev) | |
199 | { | |
200 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
201 | struct zd_chip *chip = &mac->chip; | |
202 | ||
c9a4b35d DD |
203 | netif_stop_queue(netdev); |
204 | ||
e85d0918 DD |
205 | /* |
206 | * The order here deliberately is a little different from the open() | |
207 | * method, since we need to make sure there is no opportunity for RX | |
208 | * frames to be processed by softmac after we have stopped it. | |
209 | */ | |
210 | ||
211 | zd_chip_disable_rx(chip); | |
212 | ieee80211softmac_stop(netdev); | |
213 | ||
214 | zd_chip_disable_hwint(chip); | |
215 | zd_chip_switch_radio_off(chip); | |
216 | zd_chip_disable_int(chip); | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
221 | int zd_mac_set_mac_address(struct net_device *netdev, void *p) | |
222 | { | |
223 | int r; | |
224 | unsigned long flags; | |
225 | struct sockaddr *addr = p; | |
226 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
227 | struct zd_chip *chip = &mac->chip; | |
228 | ||
229 | if (!is_valid_ether_addr(addr->sa_data)) | |
230 | return -EADDRNOTAVAIL; | |
231 | ||
232 | dev_dbg_f(zd_mac_dev(mac), | |
233 | "Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data)); | |
234 | ||
235 | r = zd_write_mac_addr(chip, addr->sa_data); | |
236 | if (r) | |
237 | return r; | |
238 | ||
239 | spin_lock_irqsave(&mac->lock, flags); | |
240 | memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN); | |
241 | spin_unlock_irqrestore(&mac->lock, flags); | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | int zd_mac_set_regdomain(struct zd_mac *mac, u8 regdomain) | |
247 | { | |
248 | int r; | |
249 | u8 channel; | |
250 | ||
251 | ZD_ASSERT(!irqs_disabled()); | |
252 | spin_lock_irq(&mac->lock); | |
253 | if (regdomain == 0) { | |
254 | regdomain = mac->default_regdomain; | |
255 | } | |
256 | if (!zd_regdomain_supported(regdomain)) { | |
257 | spin_unlock_irq(&mac->lock); | |
258 | return -EINVAL; | |
259 | } | |
260 | mac->regdomain = regdomain; | |
261 | channel = mac->requested_channel; | |
262 | spin_unlock_irq(&mac->lock); | |
263 | ||
264 | r = zd_geo_init(zd_mac_to_ieee80211(mac), regdomain); | |
265 | if (r) | |
266 | return r; | |
267 | if (!zd_regdomain_supports_channel(regdomain, channel)) { | |
268 | r = reset_channel(mac); | |
269 | if (r) | |
270 | return r; | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | u8 zd_mac_get_regdomain(struct zd_mac *mac) | |
277 | { | |
278 | unsigned long flags; | |
279 | u8 regdomain; | |
280 | ||
281 | spin_lock_irqsave(&mac->lock, flags); | |
282 | regdomain = mac->regdomain; | |
283 | spin_unlock_irqrestore(&mac->lock, flags); | |
284 | return regdomain; | |
285 | } | |
286 | ||
287 | static void set_channel(struct net_device *netdev, u8 channel) | |
288 | { | |
289 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
290 | ||
291 | dev_dbg_f(zd_mac_dev(mac), "channel %d\n", channel); | |
292 | ||
293 | zd_chip_set_channel(&mac->chip, channel); | |
294 | } | |
295 | ||
296 | /* TODO: Should not work in Managed mode. */ | |
297 | int zd_mac_request_channel(struct zd_mac *mac, u8 channel) | |
298 | { | |
299 | unsigned long lock_flags; | |
300 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
301 | ||
302 | if (ieee->iw_mode == IW_MODE_INFRA) | |
303 | return -EPERM; | |
304 | ||
305 | spin_lock_irqsave(&mac->lock, lock_flags); | |
306 | if (!zd_regdomain_supports_channel(mac->regdomain, channel)) { | |
307 | spin_unlock_irqrestore(&mac->lock, lock_flags); | |
308 | return -EINVAL; | |
309 | } | |
310 | mac->requested_channel = channel; | |
311 | spin_unlock_irqrestore(&mac->lock, lock_flags); | |
312 | if (netif_running(mac->netdev)) | |
313 | return zd_chip_set_channel(&mac->chip, channel); | |
314 | else | |
315 | return 0; | |
316 | } | |
317 | ||
318 | int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags) | |
319 | { | |
320 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
321 | ||
322 | *channel = zd_chip_get_channel(&mac->chip); | |
323 | if (ieee->iw_mode != IW_MODE_INFRA) { | |
324 | spin_lock_irq(&mac->lock); | |
325 | *flags = *channel == mac->requested_channel ? | |
326 | MAC_FIXED_CHANNEL : 0; | |
327 | spin_unlock(&mac->lock); | |
328 | } else { | |
329 | *flags = 0; | |
330 | } | |
331 | dev_dbg_f(zd_mac_dev(mac), "channel %u flags %u\n", *channel, *flags); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */ | |
336 | static u8 cs_typed_rate(u8 cs_rate) | |
337 | { | |
338 | static const u8 typed_rates[16] = { | |
339 | [ZD_CS_CCK_RATE_1M] = ZD_CS_CCK|ZD_CS_CCK_RATE_1M, | |
340 | [ZD_CS_CCK_RATE_2M] = ZD_CS_CCK|ZD_CS_CCK_RATE_2M, | |
341 | [ZD_CS_CCK_RATE_5_5M] = ZD_CS_CCK|ZD_CS_CCK_RATE_5_5M, | |
342 | [ZD_CS_CCK_RATE_11M] = ZD_CS_CCK|ZD_CS_CCK_RATE_11M, | |
343 | [ZD_OFDM_RATE_6M] = ZD_CS_OFDM|ZD_OFDM_RATE_6M, | |
344 | [ZD_OFDM_RATE_9M] = ZD_CS_OFDM|ZD_OFDM_RATE_9M, | |
345 | [ZD_OFDM_RATE_12M] = ZD_CS_OFDM|ZD_OFDM_RATE_12M, | |
346 | [ZD_OFDM_RATE_18M] = ZD_CS_OFDM|ZD_OFDM_RATE_18M, | |
347 | [ZD_OFDM_RATE_24M] = ZD_CS_OFDM|ZD_OFDM_RATE_24M, | |
348 | [ZD_OFDM_RATE_36M] = ZD_CS_OFDM|ZD_OFDM_RATE_36M, | |
349 | [ZD_OFDM_RATE_48M] = ZD_CS_OFDM|ZD_OFDM_RATE_48M, | |
350 | [ZD_OFDM_RATE_54M] = ZD_CS_OFDM|ZD_OFDM_RATE_54M, | |
351 | }; | |
352 | ||
353 | ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f); | |
354 | return typed_rates[cs_rate & ZD_CS_RATE_MASK]; | |
355 | } | |
356 | ||
357 | /* Fallback to lowest rate, if rate is unknown. */ | |
358 | static u8 rate_to_cs_rate(u8 rate) | |
359 | { | |
360 | switch (rate) { | |
361 | case IEEE80211_CCK_RATE_2MB: | |
362 | return ZD_CS_CCK_RATE_2M; | |
363 | case IEEE80211_CCK_RATE_5MB: | |
364 | return ZD_CS_CCK_RATE_5_5M; | |
365 | case IEEE80211_CCK_RATE_11MB: | |
366 | return ZD_CS_CCK_RATE_11M; | |
367 | case IEEE80211_OFDM_RATE_6MB: | |
368 | return ZD_OFDM_RATE_6M; | |
369 | case IEEE80211_OFDM_RATE_9MB: | |
370 | return ZD_OFDM_RATE_9M; | |
371 | case IEEE80211_OFDM_RATE_12MB: | |
372 | return ZD_OFDM_RATE_12M; | |
373 | case IEEE80211_OFDM_RATE_18MB: | |
374 | return ZD_OFDM_RATE_18M; | |
375 | case IEEE80211_OFDM_RATE_24MB: | |
376 | return ZD_OFDM_RATE_24M; | |
377 | case IEEE80211_OFDM_RATE_36MB: | |
378 | return ZD_OFDM_RATE_36M; | |
379 | case IEEE80211_OFDM_RATE_48MB: | |
380 | return ZD_OFDM_RATE_48M; | |
381 | case IEEE80211_OFDM_RATE_54MB: | |
382 | return ZD_OFDM_RATE_54M; | |
383 | } | |
384 | return ZD_CS_CCK_RATE_1M; | |
385 | } | |
386 | ||
387 | int zd_mac_set_mode(struct zd_mac *mac, u32 mode) | |
388 | { | |
389 | struct ieee80211_device *ieee; | |
390 | ||
391 | switch (mode) { | |
392 | case IW_MODE_AUTO: | |
393 | case IW_MODE_ADHOC: | |
394 | case IW_MODE_INFRA: | |
395 | mac->netdev->type = ARPHRD_ETHER; | |
396 | break; | |
397 | case IW_MODE_MONITOR: | |
398 | mac->netdev->type = ARPHRD_IEEE80211_RADIOTAP; | |
399 | break; | |
400 | default: | |
401 | dev_dbg_f(zd_mac_dev(mac), "wrong mode %u\n", mode); | |
402 | return -EINVAL; | |
403 | } | |
404 | ||
405 | ieee = zd_mac_to_ieee80211(mac); | |
406 | ZD_ASSERT(!irqs_disabled()); | |
407 | spin_lock_irq(&ieee->lock); | |
408 | ieee->iw_mode = mode; | |
409 | spin_unlock_irq(&ieee->lock); | |
410 | ||
411 | if (netif_running(mac->netdev)) | |
412 | return reset_mode(mac); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | int zd_mac_get_mode(struct zd_mac *mac, u32 *mode) | |
418 | { | |
419 | unsigned long flags; | |
420 | struct ieee80211_device *ieee; | |
421 | ||
422 | ieee = zd_mac_to_ieee80211(mac); | |
423 | spin_lock_irqsave(&ieee->lock, flags); | |
424 | *mode = ieee->iw_mode; | |
425 | spin_unlock_irqrestore(&ieee->lock, flags); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range) | |
430 | { | |
431 | int i; | |
432 | const struct channel_range *channel_range; | |
433 | u8 regdomain; | |
434 | ||
435 | memset(range, 0, sizeof(*range)); | |
436 | ||
437 | /* FIXME: Not so important and depends on the mode. For 802.11g | |
438 | * usually this value is used. It seems to be that Bit/s number is | |
439 | * given here. | |
440 | */ | |
441 | range->throughput = 27 * 1000 * 1000; | |
442 | ||
443 | range->max_qual.qual = 100; | |
444 | range->max_qual.level = 100; | |
445 | ||
446 | /* FIXME: Needs still to be tuned. */ | |
447 | range->avg_qual.qual = 71; | |
448 | range->avg_qual.level = 80; | |
449 | ||
450 | /* FIXME: depends on standard? */ | |
451 | range->min_rts = 256; | |
452 | range->max_rts = 2346; | |
453 | ||
454 | range->min_frag = MIN_FRAG_THRESHOLD; | |
455 | range->max_frag = MAX_FRAG_THRESHOLD; | |
456 | ||
457 | range->max_encoding_tokens = WEP_KEYS; | |
458 | range->num_encoding_sizes = 2; | |
459 | range->encoding_size[0] = 5; | |
460 | range->encoding_size[1] = WEP_KEY_LEN; | |
461 | ||
462 | range->we_version_compiled = WIRELESS_EXT; | |
463 | range->we_version_source = 20; | |
464 | ||
465 | ZD_ASSERT(!irqs_disabled()); | |
466 | spin_lock_irq(&mac->lock); | |
467 | regdomain = mac->regdomain; | |
468 | spin_unlock_irq(&mac->lock); | |
469 | channel_range = zd_channel_range(regdomain); | |
470 | ||
471 | range->num_channels = channel_range->end - channel_range->start; | |
472 | range->old_num_channels = range->num_channels; | |
473 | range->num_frequency = range->num_channels; | |
474 | range->old_num_frequency = range->num_frequency; | |
475 | ||
476 | for (i = 0; i < range->num_frequency; i++) { | |
477 | struct iw_freq *freq = &range->freq[i]; | |
478 | freq->i = channel_range->start + i; | |
479 | zd_channel_to_freq(freq, freq->i); | |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | static int zd_calc_tx_length_us(u8 *service, u8 cs_rate, u16 tx_length) | |
486 | { | |
487 | static const u8 rate_divisor[] = { | |
488 | [ZD_CS_CCK_RATE_1M] = 1, | |
489 | [ZD_CS_CCK_RATE_2M] = 2, | |
490 | [ZD_CS_CCK_RATE_5_5M] = 11, /* bits must be doubled */ | |
491 | [ZD_CS_CCK_RATE_11M] = 11, | |
492 | [ZD_OFDM_RATE_6M] = 6, | |
493 | [ZD_OFDM_RATE_9M] = 9, | |
494 | [ZD_OFDM_RATE_12M] = 12, | |
495 | [ZD_OFDM_RATE_18M] = 18, | |
496 | [ZD_OFDM_RATE_24M] = 24, | |
497 | [ZD_OFDM_RATE_36M] = 36, | |
498 | [ZD_OFDM_RATE_48M] = 48, | |
499 | [ZD_OFDM_RATE_54M] = 54, | |
500 | }; | |
501 | ||
502 | u32 bits = (u32)tx_length * 8; | |
503 | u32 divisor; | |
504 | ||
505 | divisor = rate_divisor[cs_rate]; | |
506 | if (divisor == 0) | |
507 | return -EINVAL; | |
508 | ||
509 | switch (cs_rate) { | |
510 | case ZD_CS_CCK_RATE_5_5M: | |
511 | bits = (2*bits) + 10; /* round up to the next integer */ | |
512 | break; | |
513 | case ZD_CS_CCK_RATE_11M: | |
514 | if (service) { | |
515 | u32 t = bits % 11; | |
516 | *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
517 | if (0 < t && t <= 3) { | |
518 | *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
519 | } | |
520 | } | |
521 | bits += 10; /* round up to the next integer */ | |
522 | break; | |
523 | } | |
524 | ||
525 | return bits/divisor; | |
526 | } | |
527 | ||
528 | enum { | |
529 | R2M_SHORT_PREAMBLE = 0x01, | |
530 | R2M_11A = 0x02, | |
531 | }; | |
532 | ||
533 | static u8 cs_rate_to_modulation(u8 cs_rate, int flags) | |
534 | { | |
535 | u8 modulation; | |
536 | ||
537 | modulation = cs_typed_rate(cs_rate); | |
538 | if (flags & R2M_SHORT_PREAMBLE) { | |
539 | switch (ZD_CS_RATE(modulation)) { | |
540 | case ZD_CS_CCK_RATE_2M: | |
541 | case ZD_CS_CCK_RATE_5_5M: | |
542 | case ZD_CS_CCK_RATE_11M: | |
543 | modulation |= ZD_CS_CCK_PREA_SHORT; | |
544 | return modulation; | |
545 | } | |
546 | } | |
547 | if (flags & R2M_11A) { | |
548 | if (ZD_CS_TYPE(modulation) == ZD_CS_OFDM) | |
549 | modulation |= ZD_CS_OFDM_MODE_11A; | |
550 | } | |
551 | return modulation; | |
552 | } | |
553 | ||
554 | static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs, | |
555 | struct ieee80211_hdr_4addr *hdr) | |
556 | { | |
557 | struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); | |
558 | u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl)); | |
559 | u8 rate, cs_rate; | |
560 | int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0; | |
561 | ||
562 | /* FIXME: 802.11a? short preamble? */ | |
563 | rate = ieee80211softmac_suggest_txrate(softmac, | |
564 | is_multicast_ether_addr(hdr->addr1), is_mgt); | |
565 | ||
566 | cs_rate = rate_to_cs_rate(rate); | |
567 | cs->modulation = cs_rate_to_modulation(cs_rate, 0); | |
568 | } | |
569 | ||
570 | static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, | |
571 | struct ieee80211_hdr_4addr *header) | |
572 | { | |
573 | unsigned int tx_length = le16_to_cpu(cs->tx_length); | |
574 | u16 fctl = le16_to_cpu(header->frame_ctl); | |
575 | u16 ftype = WLAN_FC_GET_TYPE(fctl); | |
576 | u16 stype = WLAN_FC_GET_STYPE(fctl); | |
577 | ||
578 | /* | |
579 | * CONTROL: | |
580 | * - start at 0x00 | |
581 | * - if fragment 0, enable bit 0 | |
582 | * - if backoff needed, enable bit 0 | |
583 | * - if burst (backoff not needed) disable bit 0 | |
584 | * - if multicast, enable bit 1 | |
585 | * - if PS-POLL frame, enable bit 2 | |
586 | * - if in INDEPENDENT_BSS mode and zd1205_DestPowerSave, then enable | |
587 | * bit 4 (FIXME: wtf) | |
588 | * - if frag_len > RTS threshold, set bit 5 as long if it isnt | |
589 | * multicast or mgt | |
590 | * - if bit 5 is set, and we are in OFDM mode, unset bit 5 and set bit | |
591 | * 7 | |
592 | */ | |
593 | ||
594 | cs->control = 0; | |
595 | ||
596 | /* First fragment */ | |
597 | if (WLAN_GET_SEQ_FRAG(le16_to_cpu(header->seq_ctl)) == 0) | |
598 | cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; | |
599 | ||
600 | /* Multicast */ | |
601 | if (is_multicast_ether_addr(header->addr1)) | |
602 | cs->control |= ZD_CS_MULTICAST; | |
603 | ||
604 | /* PS-POLL */ | |
605 | if (stype == IEEE80211_STYPE_PSPOLL) | |
606 | cs->control |= ZD_CS_PS_POLL_FRAME; | |
607 | ||
608 | if (!is_multicast_ether_addr(header->addr1) && | |
609 | ftype != IEEE80211_FTYPE_MGMT && | |
610 | tx_length > zd_netdev_ieee80211(mac->netdev)->rts) | |
611 | { | |
612 | /* FIXME: check the logic */ | |
613 | if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM) { | |
614 | /* 802.11g */ | |
615 | cs->control |= ZD_CS_SELF_CTS; | |
616 | } else { /* 802.11b */ | |
617 | cs->control |= ZD_CS_RTS; | |
618 | } | |
619 | } | |
620 | ||
621 | /* FIXME: Management frame? */ | |
622 | } | |
623 | ||
624 | static int fill_ctrlset(struct zd_mac *mac, | |
625 | struct ieee80211_txb *txb, | |
626 | int frag_num) | |
627 | { | |
628 | int r; | |
629 | struct sk_buff *skb = txb->fragments[frag_num]; | |
630 | struct ieee80211_hdr_4addr *hdr = | |
631 | (struct ieee80211_hdr_4addr *) skb->data; | |
632 | unsigned int frag_len = skb->len + IEEE80211_FCS_LEN; | |
633 | unsigned int next_frag_len; | |
634 | unsigned int packet_length; | |
635 | struct zd_ctrlset *cs = (struct zd_ctrlset *) | |
636 | skb_push(skb, sizeof(struct zd_ctrlset)); | |
637 | ||
638 | if (frag_num+1 < txb->nr_frags) { | |
639 | next_frag_len = txb->fragments[frag_num+1]->len + | |
640 | IEEE80211_FCS_LEN; | |
641 | } else { | |
642 | next_frag_len = 0; | |
643 | } | |
644 | ZD_ASSERT(frag_len <= 0xffff); | |
645 | ZD_ASSERT(next_frag_len <= 0xffff); | |
646 | ||
647 | cs_set_modulation(mac, cs, hdr); | |
648 | ||
649 | cs->tx_length = cpu_to_le16(frag_len); | |
650 | ||
651 | cs_set_control(mac, cs, hdr); | |
652 | ||
653 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; | |
654 | ZD_ASSERT(packet_length <= 0xffff); | |
655 | /* ZD1211B: Computing the length difference this way, gives us | |
656 | * flexibility to compute the packet length. | |
657 | */ | |
658 | cs->packet_length = cpu_to_le16(mac->chip.is_zd1211b ? | |
659 | packet_length - frag_len : packet_length); | |
660 | ||
661 | /* | |
662 | * CURRENT LENGTH: | |
663 | * - transmit frame length in microseconds | |
664 | * - seems to be derived from frame length | |
665 | * - see Cal_Us_Service() in zdinlinef.h | |
666 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 | |
667 | * - bTxBurstEnable is never set in the vendor driver | |
668 | * | |
669 | * SERVICE: | |
670 | * - "for PLCP configuration" | |
671 | * - always 0 except in some situations at 802.11b 11M | |
672 | * - see line 53 of zdinlinef.h | |
673 | */ | |
674 | cs->service = 0; | |
675 | r = zd_calc_tx_length_us(&cs->service, ZD_CS_RATE(cs->modulation), | |
676 | le16_to_cpu(cs->tx_length)); | |
677 | if (r < 0) | |
678 | return r; | |
679 | cs->current_length = cpu_to_le16(r); | |
680 | ||
681 | if (next_frag_len == 0) { | |
682 | cs->next_frame_length = 0; | |
683 | } else { | |
684 | r = zd_calc_tx_length_us(NULL, ZD_CS_RATE(cs->modulation), | |
685 | next_frag_len); | |
686 | if (r < 0) | |
687 | return r; | |
688 | cs->next_frame_length = cpu_to_le16(r); | |
689 | } | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri) | |
695 | { | |
696 | int i, r; | |
697 | ||
698 | for (i = 0; i < txb->nr_frags; i++) { | |
699 | struct sk_buff *skb = txb->fragments[i]; | |
700 | ||
701 | r = fill_ctrlset(mac, txb, i); | |
702 | if (r) | |
703 | return r; | |
704 | r = zd_usb_tx(&mac->chip.usb, skb->data, skb->len); | |
705 | if (r) | |
706 | return r; | |
707 | } | |
708 | ||
709 | /* FIXME: shouldn't this be handled by the upper layers? */ | |
710 | mac->netdev->trans_start = jiffies; | |
711 | ||
712 | ieee80211_txb_free(txb); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | struct zd_rt_hdr { | |
717 | struct ieee80211_radiotap_header rt_hdr; | |
718 | u8 rt_flags; | |
99f65f25 | 719 | u8 rt_rate; |
e85d0918 DD |
720 | u16 rt_channel; |
721 | u16 rt_chbitmask; | |
99f65f25 | 722 | } __attribute__((packed)); |
e85d0918 DD |
723 | |
724 | static void fill_rt_header(void *buffer, struct zd_mac *mac, | |
725 | const struct ieee80211_rx_stats *stats, | |
726 | const struct rx_status *status) | |
727 | { | |
728 | struct zd_rt_hdr *hdr = buffer; | |
729 | ||
730 | hdr->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
731 | hdr->rt_hdr.it_pad = 0; | |
732 | hdr->rt_hdr.it_len = cpu_to_le16(sizeof(struct zd_rt_hdr)); | |
733 | hdr->rt_hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | | |
734 | (1 << IEEE80211_RADIOTAP_CHANNEL) | | |
735 | (1 << IEEE80211_RADIOTAP_RATE)); | |
736 | ||
737 | hdr->rt_flags = 0; | |
738 | if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256)) | |
739 | hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP; | |
740 | ||
99f65f25 UK |
741 | hdr->rt_rate = stats->rate / 5; |
742 | ||
e85d0918 DD |
743 | /* FIXME: 802.11a */ |
744 | hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz( | |
745 | _zd_chip_get_channel(&mac->chip))); | |
746 | hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ | | |
747 | ((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) == | |
748 | ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK)); | |
e85d0918 DD |
749 | } |
750 | ||
751 | /* Returns 1 if the data packet is for us and 0 otherwise. */ | |
752 | static int is_data_packet_for_us(struct ieee80211_device *ieee, | |
753 | struct ieee80211_hdr_4addr *hdr) | |
754 | { | |
755 | struct net_device *netdev = ieee->dev; | |
756 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
757 | ||
758 | ZD_ASSERT(WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA); | |
759 | ||
760 | switch (ieee->iw_mode) { | |
761 | case IW_MODE_ADHOC: | |
762 | if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != 0 || | |
763 | memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) != 0) | |
764 | return 0; | |
765 | break; | |
766 | case IW_MODE_AUTO: | |
767 | case IW_MODE_INFRA: | |
768 | if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != | |
769 | IEEE80211_FCTL_FROMDS || | |
770 | memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) != 0) | |
771 | return 0; | |
772 | break; | |
773 | default: | |
774 | ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR); | |
775 | return 0; | |
776 | } | |
777 | ||
778 | return memcmp(hdr->addr1, netdev->dev_addr, ETH_ALEN) == 0 || | |
779 | is_multicast_ether_addr(hdr->addr1) || | |
780 | (netdev->flags & IFF_PROMISC); | |
781 | } | |
782 | ||
783 | /* Filters receiving packets. If it returns 1 send it to ieee80211_rx, if 0 | |
784 | * return. If an error is detected -EINVAL is returned. ieee80211_rx_mgt() is | |
785 | * called here. | |
786 | * | |
787 | * It has been based on ieee80211_rx_any. | |
788 | */ | |
789 | static int filter_rx(struct ieee80211_device *ieee, | |
790 | const u8 *buffer, unsigned int length, | |
791 | struct ieee80211_rx_stats *stats) | |
792 | { | |
793 | struct ieee80211_hdr_4addr *hdr; | |
794 | u16 fc; | |
795 | ||
796 | if (ieee->iw_mode == IW_MODE_MONITOR) | |
797 | return 1; | |
798 | ||
799 | hdr = (struct ieee80211_hdr_4addr *)buffer; | |
800 | fc = le16_to_cpu(hdr->frame_ctl); | |
801 | if ((fc & IEEE80211_FCTL_VERS) != 0) | |
802 | return -EINVAL; | |
803 | ||
804 | switch (WLAN_FC_GET_TYPE(fc)) { | |
805 | case IEEE80211_FTYPE_MGMT: | |
806 | if (length < sizeof(struct ieee80211_hdr_3addr)) | |
807 | return -EINVAL; | |
808 | ieee80211_rx_mgt(ieee, hdr, stats); | |
809 | return 0; | |
810 | case IEEE80211_FTYPE_CTL: | |
811 | /* Ignore invalid short buffers */ | |
812 | return 0; | |
813 | case IEEE80211_FTYPE_DATA: | |
814 | if (length < sizeof(struct ieee80211_hdr_3addr)) | |
815 | return -EINVAL; | |
816 | return is_data_packet_for_us(ieee, hdr); | |
817 | } | |
818 | ||
819 | return -EINVAL; | |
820 | } | |
821 | ||
822 | static void update_qual_rssi(struct zd_mac *mac, u8 qual_percent, u8 rssi) | |
823 | { | |
824 | unsigned long flags; | |
825 | ||
826 | spin_lock_irqsave(&mac->lock, flags); | |
827 | mac->qual_average = (7 * mac->qual_average + qual_percent) / 8; | |
828 | mac->rssi_average = (7 * mac->rssi_average + rssi) / 8; | |
829 | spin_unlock_irqrestore(&mac->lock, flags); | |
830 | } | |
831 | ||
832 | static int fill_rx_stats(struct ieee80211_rx_stats *stats, | |
833 | const struct rx_status **pstatus, | |
834 | struct zd_mac *mac, | |
835 | const u8 *buffer, unsigned int length) | |
836 | { | |
837 | const struct rx_status *status; | |
838 | ||
839 | *pstatus = status = zd_tail(buffer, length, sizeof(struct rx_status)); | |
840 | if (status->frame_status & ZD_RX_ERROR) { | |
841 | /* FIXME: update? */ | |
842 | return -EINVAL; | |
843 | } | |
844 | memset(stats, 0, sizeof(struct ieee80211_rx_stats)); | |
845 | stats->len = length - (ZD_PLCP_HEADER_SIZE + IEEE80211_FCS_LEN + | |
846 | + sizeof(struct rx_status)); | |
847 | /* FIXME: 802.11a */ | |
848 | stats->freq = IEEE80211_24GHZ_BAND; | |
849 | stats->received_channel = _zd_chip_get_channel(&mac->chip); | |
850 | stats->rssi = zd_rx_strength_percent(status->signal_strength); | |
851 | stats->signal = zd_rx_qual_percent(buffer, | |
852 | length - sizeof(struct rx_status), | |
853 | status); | |
854 | stats->mask = IEEE80211_STATMASK_RSSI | IEEE80211_STATMASK_SIGNAL; | |
855 | stats->rate = zd_rx_rate(buffer, status); | |
856 | if (stats->rate) | |
857 | stats->mask |= IEEE80211_STATMASK_RATE; | |
858 | ||
859 | update_qual_rssi(mac, stats->signal, stats->rssi); | |
860 | return 0; | |
861 | } | |
862 | ||
863 | int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length) | |
864 | { | |
865 | int r; | |
866 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
867 | struct ieee80211_rx_stats stats; | |
868 | const struct rx_status *status; | |
869 | struct sk_buff *skb; | |
870 | ||
871 | if (length < ZD_PLCP_HEADER_SIZE + IEEE80211_1ADDR_LEN + | |
872 | IEEE80211_FCS_LEN + sizeof(struct rx_status)) | |
873 | return -EINVAL; | |
874 | ||
875 | r = fill_rx_stats(&stats, &status, mac, buffer, length); | |
876 | if (r) | |
877 | return r; | |
878 | ||
879 | length -= ZD_PLCP_HEADER_SIZE+IEEE80211_FCS_LEN+ | |
880 | sizeof(struct rx_status); | |
881 | buffer += ZD_PLCP_HEADER_SIZE; | |
882 | ||
883 | r = filter_rx(ieee, buffer, length, &stats); | |
884 | if (r <= 0) | |
885 | return r; | |
886 | ||
887 | skb = dev_alloc_skb(sizeof(struct zd_rt_hdr) + length); | |
888 | if (!skb) | |
889 | return -ENOMEM; | |
890 | if (ieee->iw_mode == IW_MODE_MONITOR) | |
891 | fill_rt_header(skb_put(skb, sizeof(struct zd_rt_hdr)), mac, | |
892 | &stats, status); | |
893 | memcpy(skb_put(skb, length), buffer, length); | |
894 | ||
895 | r = ieee80211_rx(ieee, skb, &stats); | |
896 | if (!r) { | |
897 | ZD_ASSERT(in_irq()); | |
898 | dev_kfree_skb_irq(skb); | |
899 | } | |
900 | return 0; | |
901 | } | |
902 | ||
903 | static int netdev_tx(struct ieee80211_txb *txb, struct net_device *netdev, | |
904 | int pri) | |
905 | { | |
906 | return zd_mac_tx(zd_netdev_mac(netdev), txb, pri); | |
907 | } | |
908 | ||
909 | static void set_security(struct net_device *netdev, | |
910 | struct ieee80211_security *sec) | |
911 | { | |
912 | struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); | |
913 | struct ieee80211_security *secinfo = &ieee->sec; | |
914 | int keyidx; | |
915 | ||
916 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), "\n"); | |
917 | ||
918 | for (keyidx = 0; keyidx<WEP_KEYS; keyidx++) | |
919 | if (sec->flags & (1<<keyidx)) { | |
920 | secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx]; | |
921 | secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx]; | |
922 | memcpy(secinfo->keys[keyidx], sec->keys[keyidx], | |
923 | SCM_KEY_LEN); | |
924 | } | |
925 | ||
926 | if (sec->flags & SEC_ACTIVE_KEY) { | |
927 | secinfo->active_key = sec->active_key; | |
928 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
929 | " .active_key = %d\n", sec->active_key); | |
930 | } | |
931 | if (sec->flags & SEC_UNICAST_GROUP) { | |
932 | secinfo->unicast_uses_group = sec->unicast_uses_group; | |
933 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
934 | " .unicast_uses_group = %d\n", | |
935 | sec->unicast_uses_group); | |
936 | } | |
937 | if (sec->flags & SEC_LEVEL) { | |
938 | secinfo->level = sec->level; | |
939 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
940 | " .level = %d\n", sec->level); | |
941 | } | |
942 | if (sec->flags & SEC_ENABLED) { | |
943 | secinfo->enabled = sec->enabled; | |
944 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
945 | " .enabled = %d\n", sec->enabled); | |
946 | } | |
947 | if (sec->flags & SEC_ENCRYPT) { | |
948 | secinfo->encrypt = sec->encrypt; | |
949 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
950 | " .encrypt = %d\n", sec->encrypt); | |
951 | } | |
952 | if (sec->flags & SEC_AUTH_MODE) { | |
953 | secinfo->auth_mode = sec->auth_mode; | |
954 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
955 | " .auth_mode = %d\n", sec->auth_mode); | |
956 | } | |
957 | } | |
958 | ||
959 | static void ieee_init(struct ieee80211_device *ieee) | |
960 | { | |
961 | ieee->mode = IEEE_B | IEEE_G; | |
962 | ieee->freq_band = IEEE80211_24GHZ_BAND; | |
963 | ieee->modulation = IEEE80211_OFDM_MODULATION | IEEE80211_CCK_MODULATION; | |
964 | ieee->tx_headroom = sizeof(struct zd_ctrlset); | |
965 | ieee->set_security = set_security; | |
966 | ieee->hard_start_xmit = netdev_tx; | |
967 | ||
968 | /* Software encryption/decryption for now */ | |
969 | ieee->host_build_iv = 0; | |
970 | ieee->host_encrypt = 1; | |
971 | ieee->host_decrypt = 1; | |
972 | ||
973 | /* FIXME: default to managed mode, until ieee80211 and zd1211rw can | |
974 | * correctly support AUTO */ | |
975 | ieee->iw_mode = IW_MODE_INFRA; | |
976 | } | |
977 | ||
978 | static void softmac_init(struct ieee80211softmac_device *sm) | |
979 | { | |
980 | sm->set_channel = set_channel; | |
981 | } | |
982 | ||
983 | struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev) | |
984 | { | |
985 | struct zd_mac *mac = zd_netdev_mac(ndev); | |
986 | struct iw_statistics *iw_stats = &mac->iw_stats; | |
987 | ||
988 | memset(iw_stats, 0, sizeof(struct iw_statistics)); | |
989 | /* We are not setting the status, because ieee->state is not updated | |
990 | * at all and this driver doesn't track authentication state. | |
991 | */ | |
992 | spin_lock_irq(&mac->lock); | |
993 | iw_stats->qual.qual = mac->qual_average; | |
994 | iw_stats->qual.level = mac->rssi_average; | |
995 | iw_stats->qual.updated = IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED| | |
996 | IW_QUAL_NOISE_INVALID; | |
997 | spin_unlock_irq(&mac->lock); | |
998 | /* TODO: update counter */ | |
999 | return iw_stats; | |
1000 | } | |
1001 | ||
1002 | #ifdef DEBUG | |
1003 | static const char* decryption_types[] = { | |
1004 | [ZD_RX_NO_WEP] = "none", | |
1005 | [ZD_RX_WEP64] = "WEP64", | |
1006 | [ZD_RX_TKIP] = "TKIP", | |
1007 | [ZD_RX_AES] = "AES", | |
1008 | [ZD_RX_WEP128] = "WEP128", | |
1009 | [ZD_RX_WEP256] = "WEP256", | |
1010 | }; | |
1011 | ||
1012 | static const char *decryption_type_string(u8 type) | |
1013 | { | |
1014 | const char *s; | |
1015 | ||
1016 | if (type < ARRAY_SIZE(decryption_types)) { | |
1017 | s = decryption_types[type]; | |
1018 | } else { | |
1019 | s = NULL; | |
1020 | } | |
1021 | return s ? s : "unknown"; | |
1022 | } | |
1023 | ||
1024 | static int is_ofdm(u8 frame_status) | |
1025 | { | |
1026 | return (frame_status & ZD_RX_OFDM); | |
1027 | } | |
1028 | ||
1029 | void zd_dump_rx_status(const struct rx_status *status) | |
1030 | { | |
1031 | const char* modulation; | |
1032 | u8 quality; | |
1033 | ||
1034 | if (is_ofdm(status->frame_status)) { | |
1035 | modulation = "ofdm"; | |
1036 | quality = status->signal_quality_ofdm; | |
1037 | } else { | |
1038 | modulation = "cck"; | |
1039 | quality = status->signal_quality_cck; | |
1040 | } | |
1041 | pr_debug("rx status %s strength %#04x qual %#04x decryption %s\n", | |
1042 | modulation, status->signal_strength, quality, | |
1043 | decryption_type_string(status->decryption_type)); | |
1044 | if (status->frame_status & ZD_RX_ERROR) { | |
1045 | pr_debug("rx error %s%s%s%s%s%s\n", | |
1046 | (status->frame_status & ZD_RX_TIMEOUT_ERROR) ? | |
1047 | "timeout " : "", | |
1048 | (status->frame_status & ZD_RX_FIFO_OVERRUN_ERROR) ? | |
1049 | "fifo " : "", | |
1050 | (status->frame_status & ZD_RX_DECRYPTION_ERROR) ? | |
1051 | "decryption " : "", | |
1052 | (status->frame_status & ZD_RX_CRC32_ERROR) ? | |
1053 | "crc32 " : "", | |
1054 | (status->frame_status & ZD_RX_NO_ADDR1_MATCH_ERROR) ? | |
1055 | "addr1 " : "", | |
1056 | (status->frame_status & ZD_RX_CRC16_ERROR) ? | |
1057 | "crc16" : ""); | |
1058 | } | |
1059 | } | |
1060 | #endif /* DEBUG */ |