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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 | ||
583afd1e UK |
36 | static void housekeeping_init(struct zd_mac *mac); |
37 | static void housekeeping_enable(struct zd_mac *mac); | |
38 | static void housekeeping_disable(struct zd_mac *mac); | |
39 | ||
e85d0918 DD |
40 | int zd_mac_init(struct zd_mac *mac, |
41 | struct net_device *netdev, | |
42 | struct usb_interface *intf) | |
43 | { | |
44 | struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); | |
45 | ||
46 | memset(mac, 0, sizeof(*mac)); | |
47 | spin_lock_init(&mac->lock); | |
48 | mac->netdev = netdev; | |
49 | ||
50 | ieee_init(ieee); | |
51 | softmac_init(ieee80211_priv(netdev)); | |
52 | zd_chip_init(&mac->chip, netdev, intf); | |
583afd1e | 53 | housekeeping_init(mac); |
e85d0918 DD |
54 | return 0; |
55 | } | |
56 | ||
57 | static int reset_channel(struct zd_mac *mac) | |
58 | { | |
59 | int r; | |
60 | unsigned long flags; | |
61 | const struct channel_range *range; | |
62 | ||
63 | spin_lock_irqsave(&mac->lock, flags); | |
64 | range = zd_channel_range(mac->regdomain); | |
65 | if (!range->start) { | |
66 | r = -EINVAL; | |
67 | goto out; | |
68 | } | |
69 | mac->requested_channel = range->start; | |
70 | r = 0; | |
71 | out: | |
72 | spin_unlock_irqrestore(&mac->lock, flags); | |
73 | return r; | |
74 | } | |
75 | ||
76 | int zd_mac_init_hw(struct zd_mac *mac, u8 device_type) | |
77 | { | |
78 | int r; | |
79 | struct zd_chip *chip = &mac->chip; | |
80 | u8 addr[ETH_ALEN]; | |
81 | u8 default_regdomain; | |
82 | ||
83 | r = zd_chip_enable_int(chip); | |
84 | if (r) | |
85 | goto out; | |
86 | r = zd_chip_init_hw(chip, device_type); | |
87 | if (r) | |
88 | goto disable_int; | |
89 | ||
90 | zd_get_e2p_mac_addr(chip, addr); | |
91 | r = zd_write_mac_addr(chip, addr); | |
92 | if (r) | |
93 | goto disable_int; | |
94 | ZD_ASSERT(!irqs_disabled()); | |
95 | spin_lock_irq(&mac->lock); | |
96 | memcpy(mac->netdev->dev_addr, addr, ETH_ALEN); | |
97 | spin_unlock_irq(&mac->lock); | |
98 | ||
99 | r = zd_read_regdomain(chip, &default_regdomain); | |
100 | if (r) | |
101 | goto disable_int; | |
102 | if (!zd_regdomain_supported(default_regdomain)) { | |
103 | dev_dbg_f(zd_mac_dev(mac), | |
104 | "Regulatory Domain %#04x is not supported.\n", | |
105 | default_regdomain); | |
106 | r = -EINVAL; | |
107 | goto disable_int; | |
108 | } | |
109 | spin_lock_irq(&mac->lock); | |
110 | mac->regdomain = mac->default_regdomain = default_regdomain; | |
111 | spin_unlock_irq(&mac->lock); | |
112 | r = reset_channel(mac); | |
113 | if (r) | |
114 | goto disable_int; | |
115 | ||
40da08bc DD |
116 | /* We must inform the device that we are doing encryption/decryption in |
117 | * software at the moment. */ | |
118 | r = zd_set_encryption_type(chip, ENC_SNIFFER); | |
e85d0918 DD |
119 | if (r) |
120 | goto disable_int; | |
121 | ||
122 | r = zd_geo_init(zd_mac_to_ieee80211(mac), mac->regdomain); | |
123 | if (r) | |
124 | goto disable_int; | |
125 | ||
126 | r = 0; | |
127 | disable_int: | |
128 | zd_chip_disable_int(chip); | |
129 | out: | |
130 | return r; | |
131 | } | |
132 | ||
133 | void zd_mac_clear(struct zd_mac *mac) | |
134 | { | |
e85d0918 | 135 | zd_chip_clear(&mac->chip); |
c48cf125 UK |
136 | ZD_ASSERT(!spin_is_locked(&mac->lock)); |
137 | ZD_MEMCLEAR(mac, sizeof(struct zd_mac)); | |
e85d0918 DD |
138 | } |
139 | ||
140 | static int reset_mode(struct zd_mac *mac) | |
141 | { | |
142 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
143 | struct zd_ioreq32 ioreqs[3] = { | |
fde627b5 | 144 | { CR_RX_FILTER, STA_RX_FILTER }, |
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 | ||
583afd1e | 186 | housekeeping_enable(mac); |
e85d0918 DD |
187 | ieee80211softmac_start(netdev); |
188 | return 0; | |
189 | disable_rx: | |
190 | zd_chip_disable_rx(chip); | |
191 | disable_radio: | |
192 | zd_chip_switch_radio_off(chip); | |
193 | disable_int: | |
194 | zd_chip_disable_int(chip); | |
195 | out: | |
196 | return r; | |
197 | } | |
198 | ||
199 | int zd_mac_stop(struct net_device *netdev) | |
200 | { | |
201 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
202 | struct zd_chip *chip = &mac->chip; | |
203 | ||
c9a4b35d DD |
204 | netif_stop_queue(netdev); |
205 | ||
e85d0918 DD |
206 | /* |
207 | * The order here deliberately is a little different from the open() | |
208 | * method, since we need to make sure there is no opportunity for RX | |
209 | * frames to be processed by softmac after we have stopped it. | |
210 | */ | |
211 | ||
212 | zd_chip_disable_rx(chip); | |
583afd1e | 213 | housekeeping_disable(mac); |
e85d0918 DD |
214 | ieee80211softmac_stop(netdev); |
215 | ||
216 | zd_chip_disable_hwint(chip); | |
217 | zd_chip_switch_radio_off(chip); | |
218 | zd_chip_disable_int(chip); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | int zd_mac_set_mac_address(struct net_device *netdev, void *p) | |
224 | { | |
225 | int r; | |
226 | unsigned long flags; | |
227 | struct sockaddr *addr = p; | |
228 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
229 | struct zd_chip *chip = &mac->chip; | |
230 | ||
231 | if (!is_valid_ether_addr(addr->sa_data)) | |
232 | return -EADDRNOTAVAIL; | |
233 | ||
234 | dev_dbg_f(zd_mac_dev(mac), | |
235 | "Setting MAC to " MAC_FMT "\n", MAC_ARG(addr->sa_data)); | |
236 | ||
237 | r = zd_write_mac_addr(chip, addr->sa_data); | |
238 | if (r) | |
239 | return r; | |
240 | ||
241 | spin_lock_irqsave(&mac->lock, flags); | |
242 | memcpy(netdev->dev_addr, addr->sa_data, ETH_ALEN); | |
243 | spin_unlock_irqrestore(&mac->lock, flags); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
248 | int zd_mac_set_regdomain(struct zd_mac *mac, u8 regdomain) | |
249 | { | |
250 | int r; | |
251 | u8 channel; | |
252 | ||
253 | ZD_ASSERT(!irqs_disabled()); | |
254 | spin_lock_irq(&mac->lock); | |
255 | if (regdomain == 0) { | |
256 | regdomain = mac->default_regdomain; | |
257 | } | |
258 | if (!zd_regdomain_supported(regdomain)) { | |
259 | spin_unlock_irq(&mac->lock); | |
260 | return -EINVAL; | |
261 | } | |
262 | mac->regdomain = regdomain; | |
263 | channel = mac->requested_channel; | |
264 | spin_unlock_irq(&mac->lock); | |
265 | ||
266 | r = zd_geo_init(zd_mac_to_ieee80211(mac), regdomain); | |
267 | if (r) | |
268 | return r; | |
269 | if (!zd_regdomain_supports_channel(regdomain, channel)) { | |
270 | r = reset_channel(mac); | |
271 | if (r) | |
272 | return r; | |
273 | } | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | u8 zd_mac_get_regdomain(struct zd_mac *mac) | |
279 | { | |
280 | unsigned long flags; | |
281 | u8 regdomain; | |
282 | ||
283 | spin_lock_irqsave(&mac->lock, flags); | |
284 | regdomain = mac->regdomain; | |
285 | spin_unlock_irqrestore(&mac->lock, flags); | |
286 | return regdomain; | |
287 | } | |
288 | ||
289 | static void set_channel(struct net_device *netdev, u8 channel) | |
290 | { | |
291 | struct zd_mac *mac = zd_netdev_mac(netdev); | |
292 | ||
293 | dev_dbg_f(zd_mac_dev(mac), "channel %d\n", channel); | |
294 | ||
295 | zd_chip_set_channel(&mac->chip, channel); | |
296 | } | |
297 | ||
298 | /* TODO: Should not work in Managed mode. */ | |
299 | int zd_mac_request_channel(struct zd_mac *mac, u8 channel) | |
300 | { | |
301 | unsigned long lock_flags; | |
302 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
303 | ||
304 | if (ieee->iw_mode == IW_MODE_INFRA) | |
305 | return -EPERM; | |
306 | ||
307 | spin_lock_irqsave(&mac->lock, lock_flags); | |
308 | if (!zd_regdomain_supports_channel(mac->regdomain, channel)) { | |
309 | spin_unlock_irqrestore(&mac->lock, lock_flags); | |
310 | return -EINVAL; | |
311 | } | |
312 | mac->requested_channel = channel; | |
313 | spin_unlock_irqrestore(&mac->lock, lock_flags); | |
314 | if (netif_running(mac->netdev)) | |
315 | return zd_chip_set_channel(&mac->chip, channel); | |
316 | else | |
317 | return 0; | |
318 | } | |
319 | ||
320 | int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags) | |
321 | { | |
322 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
323 | ||
324 | *channel = zd_chip_get_channel(&mac->chip); | |
325 | if (ieee->iw_mode != IW_MODE_INFRA) { | |
326 | spin_lock_irq(&mac->lock); | |
327 | *flags = *channel == mac->requested_channel ? | |
328 | MAC_FIXED_CHANNEL : 0; | |
329 | spin_unlock(&mac->lock); | |
330 | } else { | |
331 | *flags = 0; | |
332 | } | |
333 | dev_dbg_f(zd_mac_dev(mac), "channel %u flags %u\n", *channel, *flags); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | /* If wrong rate is given, we are falling back to the slowest rate: 1MBit/s */ | |
338 | static u8 cs_typed_rate(u8 cs_rate) | |
339 | { | |
340 | static const u8 typed_rates[16] = { | |
341 | [ZD_CS_CCK_RATE_1M] = ZD_CS_CCK|ZD_CS_CCK_RATE_1M, | |
342 | [ZD_CS_CCK_RATE_2M] = ZD_CS_CCK|ZD_CS_CCK_RATE_2M, | |
343 | [ZD_CS_CCK_RATE_5_5M] = ZD_CS_CCK|ZD_CS_CCK_RATE_5_5M, | |
344 | [ZD_CS_CCK_RATE_11M] = ZD_CS_CCK|ZD_CS_CCK_RATE_11M, | |
345 | [ZD_OFDM_RATE_6M] = ZD_CS_OFDM|ZD_OFDM_RATE_6M, | |
346 | [ZD_OFDM_RATE_9M] = ZD_CS_OFDM|ZD_OFDM_RATE_9M, | |
347 | [ZD_OFDM_RATE_12M] = ZD_CS_OFDM|ZD_OFDM_RATE_12M, | |
348 | [ZD_OFDM_RATE_18M] = ZD_CS_OFDM|ZD_OFDM_RATE_18M, | |
349 | [ZD_OFDM_RATE_24M] = ZD_CS_OFDM|ZD_OFDM_RATE_24M, | |
350 | [ZD_OFDM_RATE_36M] = ZD_CS_OFDM|ZD_OFDM_RATE_36M, | |
351 | [ZD_OFDM_RATE_48M] = ZD_CS_OFDM|ZD_OFDM_RATE_48M, | |
352 | [ZD_OFDM_RATE_54M] = ZD_CS_OFDM|ZD_OFDM_RATE_54M, | |
353 | }; | |
354 | ||
355 | ZD_ASSERT(ZD_CS_RATE_MASK == 0x0f); | |
356 | return typed_rates[cs_rate & ZD_CS_RATE_MASK]; | |
357 | } | |
358 | ||
359 | /* Fallback to lowest rate, if rate is unknown. */ | |
360 | static u8 rate_to_cs_rate(u8 rate) | |
361 | { | |
362 | switch (rate) { | |
363 | case IEEE80211_CCK_RATE_2MB: | |
364 | return ZD_CS_CCK_RATE_2M; | |
365 | case IEEE80211_CCK_RATE_5MB: | |
366 | return ZD_CS_CCK_RATE_5_5M; | |
367 | case IEEE80211_CCK_RATE_11MB: | |
368 | return ZD_CS_CCK_RATE_11M; | |
369 | case IEEE80211_OFDM_RATE_6MB: | |
370 | return ZD_OFDM_RATE_6M; | |
371 | case IEEE80211_OFDM_RATE_9MB: | |
372 | return ZD_OFDM_RATE_9M; | |
373 | case IEEE80211_OFDM_RATE_12MB: | |
374 | return ZD_OFDM_RATE_12M; | |
375 | case IEEE80211_OFDM_RATE_18MB: | |
376 | return ZD_OFDM_RATE_18M; | |
377 | case IEEE80211_OFDM_RATE_24MB: | |
378 | return ZD_OFDM_RATE_24M; | |
379 | case IEEE80211_OFDM_RATE_36MB: | |
380 | return ZD_OFDM_RATE_36M; | |
381 | case IEEE80211_OFDM_RATE_48MB: | |
382 | return ZD_OFDM_RATE_48M; | |
383 | case IEEE80211_OFDM_RATE_54MB: | |
384 | return ZD_OFDM_RATE_54M; | |
385 | } | |
386 | return ZD_CS_CCK_RATE_1M; | |
387 | } | |
388 | ||
389 | int zd_mac_set_mode(struct zd_mac *mac, u32 mode) | |
390 | { | |
391 | struct ieee80211_device *ieee; | |
392 | ||
393 | switch (mode) { | |
394 | case IW_MODE_AUTO: | |
395 | case IW_MODE_ADHOC: | |
396 | case IW_MODE_INFRA: | |
397 | mac->netdev->type = ARPHRD_ETHER; | |
398 | break; | |
399 | case IW_MODE_MONITOR: | |
400 | mac->netdev->type = ARPHRD_IEEE80211_RADIOTAP; | |
401 | break; | |
402 | default: | |
403 | dev_dbg_f(zd_mac_dev(mac), "wrong mode %u\n", mode); | |
404 | return -EINVAL; | |
405 | } | |
406 | ||
407 | ieee = zd_mac_to_ieee80211(mac); | |
408 | ZD_ASSERT(!irqs_disabled()); | |
409 | spin_lock_irq(&ieee->lock); | |
410 | ieee->iw_mode = mode; | |
411 | spin_unlock_irq(&ieee->lock); | |
412 | ||
413 | if (netif_running(mac->netdev)) | |
414 | return reset_mode(mac); | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | int zd_mac_get_mode(struct zd_mac *mac, u32 *mode) | |
420 | { | |
421 | unsigned long flags; | |
422 | struct ieee80211_device *ieee; | |
423 | ||
424 | ieee = zd_mac_to_ieee80211(mac); | |
425 | spin_lock_irqsave(&ieee->lock, flags); | |
426 | *mode = ieee->iw_mode; | |
427 | spin_unlock_irqrestore(&ieee->lock, flags); | |
428 | return 0; | |
429 | } | |
430 | ||
431 | int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range) | |
432 | { | |
433 | int i; | |
434 | const struct channel_range *channel_range; | |
435 | u8 regdomain; | |
436 | ||
437 | memset(range, 0, sizeof(*range)); | |
438 | ||
439 | /* FIXME: Not so important and depends on the mode. For 802.11g | |
440 | * usually this value is used. It seems to be that Bit/s number is | |
441 | * given here. | |
442 | */ | |
443 | range->throughput = 27 * 1000 * 1000; | |
444 | ||
445 | range->max_qual.qual = 100; | |
446 | range->max_qual.level = 100; | |
447 | ||
448 | /* FIXME: Needs still to be tuned. */ | |
449 | range->avg_qual.qual = 71; | |
450 | range->avg_qual.level = 80; | |
451 | ||
452 | /* FIXME: depends on standard? */ | |
453 | range->min_rts = 256; | |
454 | range->max_rts = 2346; | |
455 | ||
456 | range->min_frag = MIN_FRAG_THRESHOLD; | |
457 | range->max_frag = MAX_FRAG_THRESHOLD; | |
458 | ||
459 | range->max_encoding_tokens = WEP_KEYS; | |
460 | range->num_encoding_sizes = 2; | |
461 | range->encoding_size[0] = 5; | |
462 | range->encoding_size[1] = WEP_KEY_LEN; | |
463 | ||
464 | range->we_version_compiled = WIRELESS_EXT; | |
465 | range->we_version_source = 20; | |
466 | ||
467 | ZD_ASSERT(!irqs_disabled()); | |
468 | spin_lock_irq(&mac->lock); | |
469 | regdomain = mac->regdomain; | |
470 | spin_unlock_irq(&mac->lock); | |
471 | channel_range = zd_channel_range(regdomain); | |
472 | ||
473 | range->num_channels = channel_range->end - channel_range->start; | |
474 | range->old_num_channels = range->num_channels; | |
475 | range->num_frequency = range->num_channels; | |
476 | range->old_num_frequency = range->num_frequency; | |
477 | ||
478 | for (i = 0; i < range->num_frequency; i++) { | |
479 | struct iw_freq *freq = &range->freq[i]; | |
480 | freq->i = channel_range->start + i; | |
481 | zd_channel_to_freq(freq, freq->i); | |
482 | } | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | static int zd_calc_tx_length_us(u8 *service, u8 cs_rate, u16 tx_length) | |
488 | { | |
489 | static const u8 rate_divisor[] = { | |
490 | [ZD_CS_CCK_RATE_1M] = 1, | |
491 | [ZD_CS_CCK_RATE_2M] = 2, | |
492 | [ZD_CS_CCK_RATE_5_5M] = 11, /* bits must be doubled */ | |
493 | [ZD_CS_CCK_RATE_11M] = 11, | |
494 | [ZD_OFDM_RATE_6M] = 6, | |
495 | [ZD_OFDM_RATE_9M] = 9, | |
496 | [ZD_OFDM_RATE_12M] = 12, | |
497 | [ZD_OFDM_RATE_18M] = 18, | |
498 | [ZD_OFDM_RATE_24M] = 24, | |
499 | [ZD_OFDM_RATE_36M] = 36, | |
500 | [ZD_OFDM_RATE_48M] = 48, | |
501 | [ZD_OFDM_RATE_54M] = 54, | |
502 | }; | |
503 | ||
504 | u32 bits = (u32)tx_length * 8; | |
505 | u32 divisor; | |
506 | ||
507 | divisor = rate_divisor[cs_rate]; | |
508 | if (divisor == 0) | |
509 | return -EINVAL; | |
510 | ||
511 | switch (cs_rate) { | |
512 | case ZD_CS_CCK_RATE_5_5M: | |
513 | bits = (2*bits) + 10; /* round up to the next integer */ | |
514 | break; | |
515 | case ZD_CS_CCK_RATE_11M: | |
516 | if (service) { | |
517 | u32 t = bits % 11; | |
518 | *service &= ~ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
519 | if (0 < t && t <= 3) { | |
520 | *service |= ZD_PLCP_SERVICE_LENGTH_EXTENSION; | |
521 | } | |
522 | } | |
523 | bits += 10; /* round up to the next integer */ | |
524 | break; | |
525 | } | |
526 | ||
527 | return bits/divisor; | |
528 | } | |
529 | ||
530 | enum { | |
531 | R2M_SHORT_PREAMBLE = 0x01, | |
532 | R2M_11A = 0x02, | |
533 | }; | |
534 | ||
535 | static u8 cs_rate_to_modulation(u8 cs_rate, int flags) | |
536 | { | |
537 | u8 modulation; | |
538 | ||
539 | modulation = cs_typed_rate(cs_rate); | |
540 | if (flags & R2M_SHORT_PREAMBLE) { | |
541 | switch (ZD_CS_RATE(modulation)) { | |
542 | case ZD_CS_CCK_RATE_2M: | |
543 | case ZD_CS_CCK_RATE_5_5M: | |
544 | case ZD_CS_CCK_RATE_11M: | |
545 | modulation |= ZD_CS_CCK_PREA_SHORT; | |
546 | return modulation; | |
547 | } | |
548 | } | |
549 | if (flags & R2M_11A) { | |
550 | if (ZD_CS_TYPE(modulation) == ZD_CS_OFDM) | |
551 | modulation |= ZD_CS_OFDM_MODE_11A; | |
552 | } | |
553 | return modulation; | |
554 | } | |
555 | ||
556 | static void cs_set_modulation(struct zd_mac *mac, struct zd_ctrlset *cs, | |
557 | struct ieee80211_hdr_4addr *hdr) | |
558 | { | |
559 | struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev); | |
560 | u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl)); | |
561 | u8 rate, cs_rate; | |
562 | int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0; | |
563 | ||
564 | /* FIXME: 802.11a? short preamble? */ | |
565 | rate = ieee80211softmac_suggest_txrate(softmac, | |
566 | is_multicast_ether_addr(hdr->addr1), is_mgt); | |
567 | ||
568 | cs_rate = rate_to_cs_rate(rate); | |
569 | cs->modulation = cs_rate_to_modulation(cs_rate, 0); | |
570 | } | |
571 | ||
572 | static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs, | |
573 | struct ieee80211_hdr_4addr *header) | |
574 | { | |
575 | unsigned int tx_length = le16_to_cpu(cs->tx_length); | |
576 | u16 fctl = le16_to_cpu(header->frame_ctl); | |
577 | u16 ftype = WLAN_FC_GET_TYPE(fctl); | |
578 | u16 stype = WLAN_FC_GET_STYPE(fctl); | |
579 | ||
580 | /* | |
581 | * CONTROL: | |
582 | * - start at 0x00 | |
583 | * - if fragment 0, enable bit 0 | |
584 | * - if backoff needed, enable bit 0 | |
585 | * - if burst (backoff not needed) disable bit 0 | |
586 | * - if multicast, enable bit 1 | |
587 | * - if PS-POLL frame, enable bit 2 | |
588 | * - if in INDEPENDENT_BSS mode and zd1205_DestPowerSave, then enable | |
589 | * bit 4 (FIXME: wtf) | |
590 | * - if frag_len > RTS threshold, set bit 5 as long if it isnt | |
591 | * multicast or mgt | |
592 | * - if bit 5 is set, and we are in OFDM mode, unset bit 5 and set bit | |
593 | * 7 | |
594 | */ | |
595 | ||
596 | cs->control = 0; | |
597 | ||
598 | /* First fragment */ | |
599 | if (WLAN_GET_SEQ_FRAG(le16_to_cpu(header->seq_ctl)) == 0) | |
600 | cs->control |= ZD_CS_NEED_RANDOM_BACKOFF; | |
601 | ||
602 | /* Multicast */ | |
603 | if (is_multicast_ether_addr(header->addr1)) | |
604 | cs->control |= ZD_CS_MULTICAST; | |
605 | ||
606 | /* PS-POLL */ | |
607 | if (stype == IEEE80211_STYPE_PSPOLL) | |
608 | cs->control |= ZD_CS_PS_POLL_FRAME; | |
609 | ||
610 | if (!is_multicast_ether_addr(header->addr1) && | |
611 | ftype != IEEE80211_FTYPE_MGMT && | |
612 | tx_length > zd_netdev_ieee80211(mac->netdev)->rts) | |
613 | { | |
614 | /* FIXME: check the logic */ | |
615 | if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM) { | |
616 | /* 802.11g */ | |
617 | cs->control |= ZD_CS_SELF_CTS; | |
618 | } else { /* 802.11b */ | |
619 | cs->control |= ZD_CS_RTS; | |
620 | } | |
621 | } | |
622 | ||
623 | /* FIXME: Management frame? */ | |
624 | } | |
625 | ||
626 | static int fill_ctrlset(struct zd_mac *mac, | |
627 | struct ieee80211_txb *txb, | |
628 | int frag_num) | |
629 | { | |
630 | int r; | |
631 | struct sk_buff *skb = txb->fragments[frag_num]; | |
632 | struct ieee80211_hdr_4addr *hdr = | |
633 | (struct ieee80211_hdr_4addr *) skb->data; | |
634 | unsigned int frag_len = skb->len + IEEE80211_FCS_LEN; | |
635 | unsigned int next_frag_len; | |
636 | unsigned int packet_length; | |
637 | struct zd_ctrlset *cs = (struct zd_ctrlset *) | |
638 | skb_push(skb, sizeof(struct zd_ctrlset)); | |
639 | ||
640 | if (frag_num+1 < txb->nr_frags) { | |
641 | next_frag_len = txb->fragments[frag_num+1]->len + | |
642 | IEEE80211_FCS_LEN; | |
643 | } else { | |
644 | next_frag_len = 0; | |
645 | } | |
646 | ZD_ASSERT(frag_len <= 0xffff); | |
647 | ZD_ASSERT(next_frag_len <= 0xffff); | |
648 | ||
649 | cs_set_modulation(mac, cs, hdr); | |
650 | ||
651 | cs->tx_length = cpu_to_le16(frag_len); | |
652 | ||
653 | cs_set_control(mac, cs, hdr); | |
654 | ||
655 | packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; | |
656 | ZD_ASSERT(packet_length <= 0xffff); | |
657 | /* ZD1211B: Computing the length difference this way, gives us | |
658 | * flexibility to compute the packet length. | |
659 | */ | |
660 | cs->packet_length = cpu_to_le16(mac->chip.is_zd1211b ? | |
661 | packet_length - frag_len : packet_length); | |
662 | ||
663 | /* | |
664 | * CURRENT LENGTH: | |
665 | * - transmit frame length in microseconds | |
666 | * - seems to be derived from frame length | |
667 | * - see Cal_Us_Service() in zdinlinef.h | |
668 | * - if macp->bTxBurstEnable is enabled, then multiply by 4 | |
669 | * - bTxBurstEnable is never set in the vendor driver | |
670 | * | |
671 | * SERVICE: | |
672 | * - "for PLCP configuration" | |
673 | * - always 0 except in some situations at 802.11b 11M | |
674 | * - see line 53 of zdinlinef.h | |
675 | */ | |
676 | cs->service = 0; | |
677 | r = zd_calc_tx_length_us(&cs->service, ZD_CS_RATE(cs->modulation), | |
678 | le16_to_cpu(cs->tx_length)); | |
679 | if (r < 0) | |
680 | return r; | |
681 | cs->current_length = cpu_to_le16(r); | |
682 | ||
683 | if (next_frag_len == 0) { | |
684 | cs->next_frame_length = 0; | |
685 | } else { | |
686 | r = zd_calc_tx_length_us(NULL, ZD_CS_RATE(cs->modulation), | |
687 | next_frag_len); | |
688 | if (r < 0) | |
689 | return r; | |
690 | cs->next_frame_length = cpu_to_le16(r); | |
691 | } | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | static int zd_mac_tx(struct zd_mac *mac, struct ieee80211_txb *txb, int pri) | |
697 | { | |
698 | int i, r; | |
699 | ||
700 | for (i = 0; i < txb->nr_frags; i++) { | |
701 | struct sk_buff *skb = txb->fragments[i]; | |
702 | ||
703 | r = fill_ctrlset(mac, txb, i); | |
704 | if (r) | |
705 | return r; | |
706 | r = zd_usb_tx(&mac->chip.usb, skb->data, skb->len); | |
707 | if (r) | |
708 | return r; | |
709 | } | |
710 | ||
711 | /* FIXME: shouldn't this be handled by the upper layers? */ | |
712 | mac->netdev->trans_start = jiffies; | |
713 | ||
714 | ieee80211_txb_free(txb); | |
715 | return 0; | |
716 | } | |
717 | ||
718 | struct zd_rt_hdr { | |
719 | struct ieee80211_radiotap_header rt_hdr; | |
720 | u8 rt_flags; | |
99f65f25 | 721 | u8 rt_rate; |
e85d0918 DD |
722 | u16 rt_channel; |
723 | u16 rt_chbitmask; | |
4e1bbd84 | 724 | }; |
e85d0918 DD |
725 | |
726 | static void fill_rt_header(void *buffer, struct zd_mac *mac, | |
727 | const struct ieee80211_rx_stats *stats, | |
728 | const struct rx_status *status) | |
729 | { | |
730 | struct zd_rt_hdr *hdr = buffer; | |
731 | ||
732 | hdr->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
733 | hdr->rt_hdr.it_pad = 0; | |
734 | hdr->rt_hdr.it_len = cpu_to_le16(sizeof(struct zd_rt_hdr)); | |
735 | hdr->rt_hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | | |
736 | (1 << IEEE80211_RADIOTAP_CHANNEL) | | |
737 | (1 << IEEE80211_RADIOTAP_RATE)); | |
738 | ||
739 | hdr->rt_flags = 0; | |
740 | if (status->decryption_type & (ZD_RX_WEP64|ZD_RX_WEP128|ZD_RX_WEP256)) | |
741 | hdr->rt_flags |= IEEE80211_RADIOTAP_F_WEP; | |
742 | ||
99f65f25 UK |
743 | hdr->rt_rate = stats->rate / 5; |
744 | ||
e85d0918 DD |
745 | /* FIXME: 802.11a */ |
746 | hdr->rt_channel = cpu_to_le16(ieee80211chan2mhz( | |
747 | _zd_chip_get_channel(&mac->chip))); | |
748 | hdr->rt_chbitmask = cpu_to_le16(IEEE80211_CHAN_2GHZ | | |
749 | ((status->frame_status & ZD_RX_FRAME_MODULATION_MASK) == | |
750 | ZD_RX_OFDM ? IEEE80211_CHAN_OFDM : IEEE80211_CHAN_CCK)); | |
e85d0918 DD |
751 | } |
752 | ||
753 | /* Returns 1 if the data packet is for us and 0 otherwise. */ | |
754 | static int is_data_packet_for_us(struct ieee80211_device *ieee, | |
755 | struct ieee80211_hdr_4addr *hdr) | |
756 | { | |
757 | struct net_device *netdev = ieee->dev; | |
758 | u16 fc = le16_to_cpu(hdr->frame_ctl); | |
759 | ||
760 | ZD_ASSERT(WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA); | |
761 | ||
762 | switch (ieee->iw_mode) { | |
763 | case IW_MODE_ADHOC: | |
764 | if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != 0 || | |
765 | memcmp(hdr->addr3, ieee->bssid, ETH_ALEN) != 0) | |
766 | return 0; | |
767 | break; | |
768 | case IW_MODE_AUTO: | |
769 | case IW_MODE_INFRA: | |
770 | if ((fc & (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS)) != | |
771 | IEEE80211_FCTL_FROMDS || | |
772 | memcmp(hdr->addr2, ieee->bssid, ETH_ALEN) != 0) | |
773 | return 0; | |
774 | break; | |
775 | default: | |
776 | ZD_ASSERT(ieee->iw_mode != IW_MODE_MONITOR); | |
777 | return 0; | |
778 | } | |
779 | ||
780 | return memcmp(hdr->addr1, netdev->dev_addr, ETH_ALEN) == 0 || | |
781 | is_multicast_ether_addr(hdr->addr1) || | |
782 | (netdev->flags & IFF_PROMISC); | |
783 | } | |
784 | ||
785 | /* Filters receiving packets. If it returns 1 send it to ieee80211_rx, if 0 | |
786 | * return. If an error is detected -EINVAL is returned. ieee80211_rx_mgt() is | |
787 | * called here. | |
788 | * | |
789 | * It has been based on ieee80211_rx_any. | |
790 | */ | |
791 | static int filter_rx(struct ieee80211_device *ieee, | |
792 | const u8 *buffer, unsigned int length, | |
793 | struct ieee80211_rx_stats *stats) | |
794 | { | |
795 | struct ieee80211_hdr_4addr *hdr; | |
796 | u16 fc; | |
797 | ||
798 | if (ieee->iw_mode == IW_MODE_MONITOR) | |
799 | return 1; | |
800 | ||
801 | hdr = (struct ieee80211_hdr_4addr *)buffer; | |
802 | fc = le16_to_cpu(hdr->frame_ctl); | |
803 | if ((fc & IEEE80211_FCTL_VERS) != 0) | |
804 | return -EINVAL; | |
805 | ||
806 | switch (WLAN_FC_GET_TYPE(fc)) { | |
807 | case IEEE80211_FTYPE_MGMT: | |
808 | if (length < sizeof(struct ieee80211_hdr_3addr)) | |
809 | return -EINVAL; | |
810 | ieee80211_rx_mgt(ieee, hdr, stats); | |
811 | return 0; | |
812 | case IEEE80211_FTYPE_CTL: | |
813 | /* Ignore invalid short buffers */ | |
814 | return 0; | |
815 | case IEEE80211_FTYPE_DATA: | |
816 | if (length < sizeof(struct ieee80211_hdr_3addr)) | |
817 | return -EINVAL; | |
818 | return is_data_packet_for_us(ieee, hdr); | |
819 | } | |
820 | ||
821 | return -EINVAL; | |
822 | } | |
823 | ||
db888aed UK |
824 | static void update_qual_rssi(struct zd_mac *mac, |
825 | const u8 *buffer, unsigned int length, | |
826 | u8 qual_percent, u8 rssi_percent) | |
e85d0918 DD |
827 | { |
828 | unsigned long flags; | |
db888aed UK |
829 | struct ieee80211_hdr_3addr *hdr; |
830 | int i; | |
831 | ||
832 | hdr = (struct ieee80211_hdr_3addr *)buffer; | |
833 | if (length < offsetof(struct ieee80211_hdr_3addr, addr3)) | |
834 | return; | |
835 | if (memcmp(hdr->addr2, zd_mac_to_ieee80211(mac)->bssid, ETH_ALEN) != 0) | |
836 | return; | |
e85d0918 DD |
837 | |
838 | spin_lock_irqsave(&mac->lock, flags); | |
db888aed UK |
839 | i = mac->stats_count % ZD_MAC_STATS_BUFFER_SIZE; |
840 | mac->qual_buffer[i] = qual_percent; | |
841 | mac->rssi_buffer[i] = rssi_percent; | |
842 | mac->stats_count++; | |
e85d0918 DD |
843 | spin_unlock_irqrestore(&mac->lock, flags); |
844 | } | |
845 | ||
846 | static int fill_rx_stats(struct ieee80211_rx_stats *stats, | |
847 | const struct rx_status **pstatus, | |
848 | struct zd_mac *mac, | |
849 | const u8 *buffer, unsigned int length) | |
850 | { | |
851 | const struct rx_status *status; | |
852 | ||
853 | *pstatus = status = zd_tail(buffer, length, sizeof(struct rx_status)); | |
854 | if (status->frame_status & ZD_RX_ERROR) { | |
855 | /* FIXME: update? */ | |
856 | return -EINVAL; | |
857 | } | |
858 | memset(stats, 0, sizeof(struct ieee80211_rx_stats)); | |
859 | stats->len = length - (ZD_PLCP_HEADER_SIZE + IEEE80211_FCS_LEN + | |
860 | + sizeof(struct rx_status)); | |
861 | /* FIXME: 802.11a */ | |
862 | stats->freq = IEEE80211_24GHZ_BAND; | |
863 | stats->received_channel = _zd_chip_get_channel(&mac->chip); | |
864 | stats->rssi = zd_rx_strength_percent(status->signal_strength); | |
865 | stats->signal = zd_rx_qual_percent(buffer, | |
866 | length - sizeof(struct rx_status), | |
867 | status); | |
868 | stats->mask = IEEE80211_STATMASK_RSSI | IEEE80211_STATMASK_SIGNAL; | |
869 | stats->rate = zd_rx_rate(buffer, status); | |
870 | if (stats->rate) | |
871 | stats->mask |= IEEE80211_STATMASK_RATE; | |
872 | ||
e85d0918 DD |
873 | return 0; |
874 | } | |
875 | ||
876 | int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length) | |
877 | { | |
878 | int r; | |
879 | struct ieee80211_device *ieee = zd_mac_to_ieee80211(mac); | |
880 | struct ieee80211_rx_stats stats; | |
881 | const struct rx_status *status; | |
882 | struct sk_buff *skb; | |
883 | ||
884 | if (length < ZD_PLCP_HEADER_SIZE + IEEE80211_1ADDR_LEN + | |
885 | IEEE80211_FCS_LEN + sizeof(struct rx_status)) | |
886 | return -EINVAL; | |
887 | ||
888 | r = fill_rx_stats(&stats, &status, mac, buffer, length); | |
889 | if (r) | |
890 | return r; | |
891 | ||
892 | length -= ZD_PLCP_HEADER_SIZE+IEEE80211_FCS_LEN+ | |
893 | sizeof(struct rx_status); | |
894 | buffer += ZD_PLCP_HEADER_SIZE; | |
895 | ||
db888aed UK |
896 | update_qual_rssi(mac, buffer, length, stats.signal, stats.rssi); |
897 | ||
e85d0918 DD |
898 | r = filter_rx(ieee, buffer, length, &stats); |
899 | if (r <= 0) | |
900 | return r; | |
901 | ||
902 | skb = dev_alloc_skb(sizeof(struct zd_rt_hdr) + length); | |
903 | if (!skb) | |
904 | return -ENOMEM; | |
905 | if (ieee->iw_mode == IW_MODE_MONITOR) | |
906 | fill_rt_header(skb_put(skb, sizeof(struct zd_rt_hdr)), mac, | |
907 | &stats, status); | |
908 | memcpy(skb_put(skb, length), buffer, length); | |
909 | ||
910 | r = ieee80211_rx(ieee, skb, &stats); | |
911 | if (!r) { | |
912 | ZD_ASSERT(in_irq()); | |
913 | dev_kfree_skb_irq(skb); | |
914 | } | |
915 | return 0; | |
916 | } | |
917 | ||
918 | static int netdev_tx(struct ieee80211_txb *txb, struct net_device *netdev, | |
919 | int pri) | |
920 | { | |
921 | return zd_mac_tx(zd_netdev_mac(netdev), txb, pri); | |
922 | } | |
923 | ||
924 | static void set_security(struct net_device *netdev, | |
925 | struct ieee80211_security *sec) | |
926 | { | |
927 | struct ieee80211_device *ieee = zd_netdev_ieee80211(netdev); | |
928 | struct ieee80211_security *secinfo = &ieee->sec; | |
929 | int keyidx; | |
930 | ||
931 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), "\n"); | |
932 | ||
933 | for (keyidx = 0; keyidx<WEP_KEYS; keyidx++) | |
934 | if (sec->flags & (1<<keyidx)) { | |
935 | secinfo->encode_alg[keyidx] = sec->encode_alg[keyidx]; | |
936 | secinfo->key_sizes[keyidx] = sec->key_sizes[keyidx]; | |
937 | memcpy(secinfo->keys[keyidx], sec->keys[keyidx], | |
938 | SCM_KEY_LEN); | |
939 | } | |
940 | ||
941 | if (sec->flags & SEC_ACTIVE_KEY) { | |
942 | secinfo->active_key = sec->active_key; | |
943 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
944 | " .active_key = %d\n", sec->active_key); | |
945 | } | |
946 | if (sec->flags & SEC_UNICAST_GROUP) { | |
947 | secinfo->unicast_uses_group = sec->unicast_uses_group; | |
948 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
949 | " .unicast_uses_group = %d\n", | |
950 | sec->unicast_uses_group); | |
951 | } | |
952 | if (sec->flags & SEC_LEVEL) { | |
953 | secinfo->level = sec->level; | |
954 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
955 | " .level = %d\n", sec->level); | |
956 | } | |
957 | if (sec->flags & SEC_ENABLED) { | |
958 | secinfo->enabled = sec->enabled; | |
959 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
960 | " .enabled = %d\n", sec->enabled); | |
961 | } | |
962 | if (sec->flags & SEC_ENCRYPT) { | |
963 | secinfo->encrypt = sec->encrypt; | |
964 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
965 | " .encrypt = %d\n", sec->encrypt); | |
966 | } | |
967 | if (sec->flags & SEC_AUTH_MODE) { | |
968 | secinfo->auth_mode = sec->auth_mode; | |
969 | dev_dbg_f(zd_mac_dev(zd_netdev_mac(netdev)), | |
970 | " .auth_mode = %d\n", sec->auth_mode); | |
971 | } | |
972 | } | |
973 | ||
974 | static void ieee_init(struct ieee80211_device *ieee) | |
975 | { | |
976 | ieee->mode = IEEE_B | IEEE_G; | |
977 | ieee->freq_band = IEEE80211_24GHZ_BAND; | |
978 | ieee->modulation = IEEE80211_OFDM_MODULATION | IEEE80211_CCK_MODULATION; | |
979 | ieee->tx_headroom = sizeof(struct zd_ctrlset); | |
980 | ieee->set_security = set_security; | |
981 | ieee->hard_start_xmit = netdev_tx; | |
982 | ||
983 | /* Software encryption/decryption for now */ | |
984 | ieee->host_build_iv = 0; | |
985 | ieee->host_encrypt = 1; | |
986 | ieee->host_decrypt = 1; | |
987 | ||
988 | /* FIXME: default to managed mode, until ieee80211 and zd1211rw can | |
989 | * correctly support AUTO */ | |
990 | ieee->iw_mode = IW_MODE_INFRA; | |
991 | } | |
992 | ||
993 | static void softmac_init(struct ieee80211softmac_device *sm) | |
994 | { | |
995 | sm->set_channel = set_channel; | |
996 | } | |
997 | ||
998 | struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev) | |
999 | { | |
1000 | struct zd_mac *mac = zd_netdev_mac(ndev); | |
1001 | struct iw_statistics *iw_stats = &mac->iw_stats; | |
db888aed | 1002 | unsigned int i, count, qual_total, rssi_total; |
e85d0918 DD |
1003 | |
1004 | memset(iw_stats, 0, sizeof(struct iw_statistics)); | |
1005 | /* We are not setting the status, because ieee->state is not updated | |
1006 | * at all and this driver doesn't track authentication state. | |
1007 | */ | |
1008 | spin_lock_irq(&mac->lock); | |
db888aed UK |
1009 | count = mac->stats_count < ZD_MAC_STATS_BUFFER_SIZE ? |
1010 | mac->stats_count : ZD_MAC_STATS_BUFFER_SIZE; | |
1011 | qual_total = rssi_total = 0; | |
1012 | for (i = 0; i < count; i++) { | |
1013 | qual_total += mac->qual_buffer[i]; | |
1014 | rssi_total += mac->rssi_buffer[i]; | |
1015 | } | |
e85d0918 | 1016 | spin_unlock_irq(&mac->lock); |
db888aed UK |
1017 | iw_stats->qual.updated = IW_QUAL_NOISE_INVALID; |
1018 | if (count > 0) { | |
1019 | iw_stats->qual.qual = qual_total / count; | |
1020 | iw_stats->qual.level = rssi_total / count; | |
1021 | iw_stats->qual.updated |= | |
1022 | IW_QUAL_QUAL_UPDATED|IW_QUAL_LEVEL_UPDATED; | |
1023 | } else { | |
1024 | iw_stats->qual.updated |= | |
1025 | IW_QUAL_QUAL_INVALID|IW_QUAL_LEVEL_INVALID; | |
1026 | } | |
e85d0918 DD |
1027 | /* TODO: update counter */ |
1028 | return iw_stats; | |
1029 | } | |
1030 | ||
1031 | #ifdef DEBUG | |
1032 | static const char* decryption_types[] = { | |
1033 | [ZD_RX_NO_WEP] = "none", | |
1034 | [ZD_RX_WEP64] = "WEP64", | |
1035 | [ZD_RX_TKIP] = "TKIP", | |
1036 | [ZD_RX_AES] = "AES", | |
1037 | [ZD_RX_WEP128] = "WEP128", | |
1038 | [ZD_RX_WEP256] = "WEP256", | |
1039 | }; | |
1040 | ||
1041 | static const char *decryption_type_string(u8 type) | |
1042 | { | |
1043 | const char *s; | |
1044 | ||
1045 | if (type < ARRAY_SIZE(decryption_types)) { | |
1046 | s = decryption_types[type]; | |
1047 | } else { | |
1048 | s = NULL; | |
1049 | } | |
1050 | return s ? s : "unknown"; | |
1051 | } | |
1052 | ||
1053 | static int is_ofdm(u8 frame_status) | |
1054 | { | |
1055 | return (frame_status & ZD_RX_OFDM); | |
1056 | } | |
1057 | ||
1058 | void zd_dump_rx_status(const struct rx_status *status) | |
1059 | { | |
1060 | const char* modulation; | |
1061 | u8 quality; | |
1062 | ||
1063 | if (is_ofdm(status->frame_status)) { | |
1064 | modulation = "ofdm"; | |
1065 | quality = status->signal_quality_ofdm; | |
1066 | } else { | |
1067 | modulation = "cck"; | |
1068 | quality = status->signal_quality_cck; | |
1069 | } | |
1070 | pr_debug("rx status %s strength %#04x qual %#04x decryption %s\n", | |
1071 | modulation, status->signal_strength, quality, | |
1072 | decryption_type_string(status->decryption_type)); | |
1073 | if (status->frame_status & ZD_RX_ERROR) { | |
1074 | pr_debug("rx error %s%s%s%s%s%s\n", | |
1075 | (status->frame_status & ZD_RX_TIMEOUT_ERROR) ? | |
1076 | "timeout " : "", | |
1077 | (status->frame_status & ZD_RX_FIFO_OVERRUN_ERROR) ? | |
1078 | "fifo " : "", | |
1079 | (status->frame_status & ZD_RX_DECRYPTION_ERROR) ? | |
1080 | "decryption " : "", | |
1081 | (status->frame_status & ZD_RX_CRC32_ERROR) ? | |
1082 | "crc32 " : "", | |
1083 | (status->frame_status & ZD_RX_NO_ADDR1_MATCH_ERROR) ? | |
1084 | "addr1 " : "", | |
1085 | (status->frame_status & ZD_RX_CRC16_ERROR) ? | |
1086 | "crc16" : ""); | |
1087 | } | |
1088 | } | |
1089 | #endif /* DEBUG */ | |
583afd1e UK |
1090 | |
1091 | #define LINK_LED_WORK_DELAY HZ | |
1092 | ||
1093 | static void link_led_handler(void *p) | |
1094 | { | |
1095 | struct zd_mac *mac = p; | |
1096 | struct zd_chip *chip = &mac->chip; | |
1097 | struct ieee80211softmac_device *sm = ieee80211_priv(mac->netdev); | |
1098 | int is_associated; | |
1099 | int r; | |
1100 | ||
1101 | spin_lock_irq(&mac->lock); | |
41072a1b | 1102 | is_associated = sm->associnfo.associated != 0; |
583afd1e UK |
1103 | spin_unlock_irq(&mac->lock); |
1104 | ||
1105 | r = zd_chip_control_leds(chip, | |
1106 | is_associated ? LED_ASSOCIATED : LED_SCANNING); | |
1107 | if (r) | |
1108 | dev_err(zd_mac_dev(mac), "zd_chip_control_leds error %d\n", r); | |
1109 | ||
1110 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
1111 | LINK_LED_WORK_DELAY); | |
1112 | } | |
1113 | ||
1114 | static void housekeeping_init(struct zd_mac *mac) | |
1115 | { | |
1116 | INIT_WORK(&mac->housekeeping.link_led_work, link_led_handler, mac); | |
1117 | } | |
1118 | ||
1119 | static void housekeeping_enable(struct zd_mac *mac) | |
1120 | { | |
1121 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
1122 | queue_delayed_work(zd_workqueue, &mac->housekeeping.link_led_work, | |
1123 | 0); | |
1124 | } | |
1125 | ||
1126 | static void housekeeping_disable(struct zd_mac *mac) | |
1127 | { | |
1128 | dev_dbg_f(zd_mac_dev(mac), "\n"); | |
1129 | cancel_rearming_delayed_workqueue(zd_workqueue, | |
1130 | &mac->housekeeping.link_led_work); | |
1131 | zd_chip_control_leds(&mac->chip, LED_OFF); | |
1132 | } |