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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / net / wireless / libertas / 11d.c
blob5c6968101f0d1ce8dea7d50802175e1d940827b5
1 /**
2 * This file contains functions for 802.11D.
3 */
4 #include <linux/ctype.h>
5 #include <linux/kernel.h>
6 #include <linux/wireless.h>
7
8 #include "host.h"
9 #include "decl.h"
10 #include "11d.h"
11 #include "dev.h"
12 #include "wext.h"
13
14 #define TX_PWR_DEFAULT 10
15
16 static struct region_code_mapping region_code_mapping[] = {
17 {"US ", 0x10}, /* US FCC */
18 {"CA ", 0x10}, /* IC Canada */
19 {"SG ", 0x10}, /* Singapore */
20 {"EU ", 0x30}, /* ETSI */
21 {"AU ", 0x30}, /* Australia */
22 {"KR ", 0x30}, /* Republic Of Korea */
23 {"ES ", 0x31}, /* Spain */
24 {"FR ", 0x32}, /* France */
25 {"JP ", 0x40}, /* Japan */
26 };
27
28 /* Following 2 structure defines the supported channels */
29 static struct chan_freq_power channel_freq_power_UN_BG[] = {
30 {1, 2412, TX_PWR_DEFAULT},
31 {2, 2417, TX_PWR_DEFAULT},
32 {3, 2422, TX_PWR_DEFAULT},
33 {4, 2427, TX_PWR_DEFAULT},
34 {5, 2432, TX_PWR_DEFAULT},
35 {6, 2437, TX_PWR_DEFAULT},
36 {7, 2442, TX_PWR_DEFAULT},
37 {8, 2447, TX_PWR_DEFAULT},
38 {9, 2452, TX_PWR_DEFAULT},
39 {10, 2457, TX_PWR_DEFAULT},
40 {11, 2462, TX_PWR_DEFAULT},
41 {12, 2467, TX_PWR_DEFAULT},
42 {13, 2472, TX_PWR_DEFAULT},
43 {14, 2484, TX_PWR_DEFAULT}
44 };
45
46 static u8 lbs_region_2_code(u8 *region)
47 {
48 u8 i;
49
50 for (i = 0; i < COUNTRY_CODE_LEN && region[i]; i++)
51 region[i] = toupper(region[i]);
52
53 for (i = 0; i < ARRAY_SIZE(region_code_mapping); i++) {
54 if (!memcmp(region, region_code_mapping[i].region,
55 COUNTRY_CODE_LEN))
56 return (region_code_mapping[i].code);
57 }
58
59 /* default is US */
60 return (region_code_mapping[0].code);
61 }
62
63 static u8 *lbs_code_2_region(u8 code)
64 {
65 u8 i;
66
67 for (i = 0; i < ARRAY_SIZE(region_code_mapping); i++) {
68 if (region_code_mapping[i].code == code)
69 return (region_code_mapping[i].region);
70 }
71 /* default is US */
72 return (region_code_mapping[0].region);
73 }
74
75 /**
76 * @brief This function finds the nrchan-th chan after the firstchan
77 * @param band band
78 * @param firstchan first channel number
79 * @param nrchan number of channels
80 * @return the nrchan-th chan number
81 */
82 static u8 lbs_get_chan_11d(u8 firstchan, u8 nrchan, u8 *chan)
83 /*find the nrchan-th chan after the firstchan*/
84 {
85 u8 i;
86 struct chan_freq_power *cfp;
87 u8 cfp_no;
88
89 cfp = channel_freq_power_UN_BG;
90 cfp_no = ARRAY_SIZE(channel_freq_power_UN_BG);
91
92 for (i = 0; i < cfp_no; i++) {
93 if ((cfp + i)->channel == firstchan) {
94 lbs_deb_11d("firstchan found\n");
95 break;
96 }
97 }
98
99 if (i < cfp_no) {
100 /*if beyond the boundary */
101 if (i + nrchan < cfp_no) {
102 *chan = (cfp + i + nrchan)->channel;
103 return 1;
104 }
105 }
106
107 return 0;
108 }
109
110 /**
111 * @brief This function Checks if chan txpwr is learned from AP/IBSS
112 * @param chan chan number
113 * @param parsed_region_chan pointer to parsed_region_chan_11d
114 * @return TRUE; FALSE
115 */
116 static u8 lbs_channel_known_11d(u8 chan,
117 struct parsed_region_chan_11d * parsed_region_chan)
118 {
119 struct chan_power_11d *chanpwr = parsed_region_chan->chanpwr;
120 u8 nr_chan = parsed_region_chan->nr_chan;
121 u8 i = 0;
122
123 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)chanpwr,
124 sizeof(struct chan_power_11d) * nr_chan);
125
126 for (i = 0; i < nr_chan; i++) {
127 if (chan == chanpwr[i].chan) {
128 lbs_deb_11d("found chan %d\n", chan);
129 return 1;
130 }
131 }
132
133 lbs_deb_11d("chan %d not found\n", chan);
134 return 0;
135 }
136
137 u32 lbs_chan_2_freq(u8 chan)
138 {
139 struct chan_freq_power *cf;
140 u16 i;
141 u32 freq = 0;
142
143 cf = channel_freq_power_UN_BG;
144
145 for (i = 0; i < ARRAY_SIZE(channel_freq_power_UN_BG); i++) {
146 if (chan == cf[i].channel)
147 freq = cf[i].freq;
148 }
149
150 return freq;
151 }
152
153 static int generate_domain_info_11d(struct parsed_region_chan_11d
154 *parsed_region_chan,
155 struct lbs_802_11d_domain_reg *domaininfo)
156 {
157 u8 nr_subband = 0;
158
159 u8 nr_chan = parsed_region_chan->nr_chan;
160 u8 nr_parsedchan = 0;
161
162 u8 firstchan = 0, nextchan = 0, maxpwr = 0;
163
164 u8 i, flag = 0;
165
166 memcpy(domaininfo->countrycode, parsed_region_chan->countrycode,
167 COUNTRY_CODE_LEN);
168
169 lbs_deb_11d("nrchan %d\n", nr_chan);
170 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (char *)parsed_region_chan,
171 sizeof(struct parsed_region_chan_11d));
172
173 for (i = 0; i < nr_chan; i++) {
174 if (!flag) {
175 flag = 1;
176 nextchan = firstchan =
177 parsed_region_chan->chanpwr[i].chan;
178 maxpwr = parsed_region_chan->chanpwr[i].pwr;
179 nr_parsedchan = 1;
180 continue;
181 }
182
183 if (parsed_region_chan->chanpwr[i].chan == nextchan + 1 &&
184 parsed_region_chan->chanpwr[i].pwr == maxpwr) {
185 nextchan++;
186 nr_parsedchan++;
187 } else {
188 domaininfo->subband[nr_subband].firstchan = firstchan;
189 domaininfo->subband[nr_subband].nrchan =
190 nr_parsedchan;
191 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
192 nr_subband++;
193 nextchan = firstchan =
194 parsed_region_chan->chanpwr[i].chan;
195 maxpwr = parsed_region_chan->chanpwr[i].pwr;
196 }
197 }
198
199 if (flag) {
200 domaininfo->subband[nr_subband].firstchan = firstchan;
201 domaininfo->subband[nr_subband].nrchan = nr_parsedchan;
202 domaininfo->subband[nr_subband].maxtxpwr = maxpwr;
203 nr_subband++;
204 }
205 domaininfo->nr_subband = nr_subband;
206
207 lbs_deb_11d("nr_subband=%x\n", domaininfo->nr_subband);
208 lbs_deb_hex(LBS_DEB_11D, "domaininfo", (char *)domaininfo,
209 COUNTRY_CODE_LEN + 1 +
210 sizeof(struct ieee_subbandset) * nr_subband);
211 return 0;
212 }
213
214 /**
215 * @brief This function generates parsed_region_chan from Domain Info learned from AP/IBSS
216 * @param region_chan pointer to struct region_channel
217 * @param *parsed_region_chan pointer to parsed_region_chan_11d
218 * @return N/A
219 */
220 static void lbs_generate_parsed_region_chan_11d(struct region_channel *region_chan,
221 struct parsed_region_chan_11d *
222 parsed_region_chan)
223 {
224 u8 i;
225 struct chan_freq_power *cfp;
226
227 if (region_chan == NULL) {
228 lbs_deb_11d("region_chan is NULL\n");
229 return;
230 }
231
232 cfp = region_chan->CFP;
233 if (cfp == NULL) {
234 lbs_deb_11d("cfp is NULL \n");
235 return;
236 }
237
238 parsed_region_chan->band = region_chan->band;
239 parsed_region_chan->region = region_chan->region;
240 memcpy(parsed_region_chan->countrycode,
241 lbs_code_2_region(region_chan->region), COUNTRY_CODE_LEN);
242
243 lbs_deb_11d("region 0x%x, band %d\n", parsed_region_chan->region,
244 parsed_region_chan->band);
245
246 for (i = 0; i < region_chan->nrcfp; i++, cfp++) {
247 parsed_region_chan->chanpwr[i].chan = cfp->channel;
248 parsed_region_chan->chanpwr[i].pwr = cfp->maxtxpower;
249 lbs_deb_11d("chan %d, pwr %d\n",
250 parsed_region_chan->chanpwr[i].chan,
251 parsed_region_chan->chanpwr[i].pwr);
252 }
253 parsed_region_chan->nr_chan = region_chan->nrcfp;
254
255 lbs_deb_11d("nrchan %d\n", parsed_region_chan->nr_chan);
256
257 return;
258 }
259
260 /**
261 * @brief generate parsed_region_chan from Domain Info learned from AP/IBSS
262 * @param region region ID
263 * @param band band
264 * @param chan chan
265 * @return TRUE;FALSE
266 */
267 static u8 lbs_region_chan_supported_11d(u8 region, u8 chan)
268 {
269 struct chan_freq_power *cfp;
270 int cfp_no;
271 u8 idx;
272 int ret = 0;
273
274 lbs_deb_enter(LBS_DEB_11D);
275
276 cfp = lbs_get_region_cfp_table(region, &cfp_no);
277 if (cfp == NULL)
278 return 0;
279
280 for (idx = 0; idx < cfp_no; idx++) {
281 if (chan == (cfp + idx)->channel) {
282 /* If Mrvl Chip Supported? */
283 if ((cfp + idx)->unsupported) {
284 ret = 0;
285 } else {
286 ret = 1;
287 }
288 goto done;
289 }
290 }
291
292 /*chan is not in the region table */
293
294 done:
295 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
296 return ret;
297 }
298
299 /**
300 * @brief This function checks if chan txpwr is learned from AP/IBSS
301 * @param chan chan number
302 * @param parsed_region_chan pointer to parsed_region_chan_11d
303 * @return 0
304 */
305 static int parse_domain_info_11d(struct ieee_ie_country_info_full_set *countryinfo,
306 u8 band,
307 struct parsed_region_chan_11d *parsed_region_chan)
308 {
309 u8 nr_subband, nrchan;
310 u8 lastchan, firstchan;
311 u8 region;
312 u8 curchan = 0;
313
314 u8 idx = 0; /*chan index in parsed_region_chan */
315
316 u8 j, i;
317
318 lbs_deb_enter(LBS_DEB_11D);
319
320 /*validation Rules:
321 1. valid region Code
322 2. First Chan increment
323 3. channel range no overlap
324 4. channel is valid?
325 5. channel is supported by region?
326 6. Others
327 */
328
329 lbs_deb_hex(LBS_DEB_11D, "countryinfo", (u8 *) countryinfo, 30);
330
331 if ((*(countryinfo->countrycode)) == 0
332 || (countryinfo->header.len <= COUNTRY_CODE_LEN)) {
333 /* No region Info or Wrong region info: treat as No 11D info */
334 goto done;
335 }
336
337 /*Step1: check region_code */
338 parsed_region_chan->region = region =
339 lbs_region_2_code(countryinfo->countrycode);
340
341 lbs_deb_11d("regioncode=%x\n", (u8) parsed_region_chan->region);
342 lbs_deb_hex(LBS_DEB_11D, "countrycode", (char *)countryinfo->countrycode,
343 COUNTRY_CODE_LEN);
344
345 parsed_region_chan->band = band;
346
347 memcpy(parsed_region_chan->countrycode, countryinfo->countrycode,
348 COUNTRY_CODE_LEN);
349
350 nr_subband = (countryinfo->header.len - COUNTRY_CODE_LEN) /
351 sizeof(struct ieee_subbandset);
352
353 for (j = 0, lastchan = 0; j < nr_subband; j++) {
354
355 if (countryinfo->subband[j].firstchan <= lastchan) {
356 /*Step2&3. Check First Chan Num increment and no overlap */
357 lbs_deb_11d("chan %d>%d, overlap\n",
358 countryinfo->subband[j].firstchan, lastchan);
359 continue;
360 }
361
362 firstchan = countryinfo->subband[j].firstchan;
363 nrchan = countryinfo->subband[j].nrchan;
364
365 for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) {
366 /*step4: channel is supported? */
367
368 if (!lbs_get_chan_11d(firstchan, i, &curchan)) {
369 /* Chan is not found in UN table */
370 lbs_deb_11d("chan is not supported: %d \n", i);
371 break;
372 }
373
374 lastchan = curchan;
375
376 if (lbs_region_chan_supported_11d(region, curchan)) {
377 /*step5: Check if curchan is supported by mrvl in region */
378 parsed_region_chan->chanpwr[idx].chan = curchan;
379 parsed_region_chan->chanpwr[idx].pwr =
380 countryinfo->subband[j].maxtxpwr;
381 idx++;
382 } else {
383 /*not supported and ignore the chan */
384 lbs_deb_11d(
385 "i %d, chan %d unsupported in region %x, band %d\n",
386 i, curchan, region, band);
387 }
388 }
389
390 /*Step6: Add other checking if any */
391
392 }
393
394 parsed_region_chan->nr_chan = idx;
395
396 lbs_deb_11d("nrchan=%x\n", parsed_region_chan->nr_chan);
397 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (u8 *) parsed_region_chan,
398 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx);
399
400 done:
401 lbs_deb_enter(LBS_DEB_11D);
402 return 0;
403 }
404
405 /**
406 * @brief This function calculates the scan type for channels
407 * @param chan chan number
408 * @param parsed_region_chan pointer to parsed_region_chan_11d
409 * @return PASSIVE if chan is unknown; ACTIVE if chan is known
410 */
411 u8 lbs_get_scan_type_11d(u8 chan,
412 struct parsed_region_chan_11d * parsed_region_chan)
413 {
414 u8 scan_type = CMD_SCAN_TYPE_PASSIVE;
415
416 lbs_deb_enter(LBS_DEB_11D);
417
418 if (lbs_channel_known_11d(chan, parsed_region_chan)) {
419 lbs_deb_11d("found, do active scan\n");
420 scan_type = CMD_SCAN_TYPE_ACTIVE;
421 } else {
422 lbs_deb_11d("not found, do passive scan\n");
423 }
424
425 lbs_deb_leave_args(LBS_DEB_11D, "ret scan_type %d", scan_type);
426 return scan_type;
427
428 }
429
430 void lbs_init_11d(struct lbs_private *priv)
431 {
432 priv->enable11d = 0;
433 memset(&(priv->parsed_region_chan), 0,
434 sizeof(struct parsed_region_chan_11d));
435 return;
436 }
437
438 /**
439 * @brief This function sets DOMAIN INFO to FW
440 * @param priv pointer to struct lbs_private
441 * @return 0; -1
442 */
443 static int set_domain_info_11d(struct lbs_private *priv)
444 {
445 int ret;
446
447 if (!priv->enable11d) {
448 lbs_deb_11d("dnld domain Info with 11d disabled\n");
449 return 0;
450 }
451
452 ret = lbs_prepare_and_send_command(priv, CMD_802_11D_DOMAIN_INFO,
453 CMD_ACT_SET,
454 CMD_OPTION_WAITFORRSP, 0, NULL);
455 if (ret)
456 lbs_deb_11d("fail to dnld domain info\n");
457
458 return ret;
459 }
460
461 /**
462 * @brief This function setups scan channels
463 * @param priv pointer to struct lbs_private
464 * @param band band
465 * @return 0
466 */
467 int lbs_set_universaltable(struct lbs_private *priv, u8 band)
468 {
469 u16 size = sizeof(struct chan_freq_power);
470 u16 i = 0;
471
472 memset(priv->universal_channel, 0,
473 sizeof(priv->universal_channel));
474
475 priv->universal_channel[i].nrcfp =
476 sizeof(channel_freq_power_UN_BG) / size;
477 lbs_deb_11d("BG-band nrcfp %d\n",
478 priv->universal_channel[i].nrcfp);
479
480 priv->universal_channel[i].CFP = channel_freq_power_UN_BG;
481 priv->universal_channel[i].valid = 1;
482 priv->universal_channel[i].region = UNIVERSAL_REGION_CODE;
483 priv->universal_channel[i].band = band;
484 i++;
485
486 return 0;
487 }
488
489 /**
490 * @brief This function implements command CMD_802_11D_DOMAIN_INFO
491 * @param priv pointer to struct lbs_private
492 * @param cmd pointer to cmd buffer
493 * @param cmdno cmd ID
494 * @param cmdOption cmd action
495 * @return 0
496 */
497 int lbs_cmd_802_11d_domain_info(struct lbs_private *priv,
498 struct cmd_ds_command *cmd, u16 cmdno,
499 u16 cmdoption)
500 {
501 struct cmd_ds_802_11d_domain_info *pdomaininfo =
502 &cmd->params.domaininfo;
503 struct mrvl_ie_domain_param_set *domain = &pdomaininfo->domain;
504 u8 nr_subband = priv->domainreg.nr_subband;
505
506 lbs_deb_enter(LBS_DEB_11D);
507
508 lbs_deb_11d("nr_subband=%x\n", nr_subband);
509
510 cmd->command = cpu_to_le16(cmdno);
511 pdomaininfo->action = cpu_to_le16(cmdoption);
512 if (cmdoption == CMD_ACT_GET) {
513 cmd->size =
514 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
515 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
516 le16_to_cpu(cmd->size));
517 goto done;
518 }
519
520 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
521 memcpy(domain->countrycode, priv->domainreg.countrycode,
522 sizeof(domain->countrycode));
523
524 domain->header.len =
525 cpu_to_le16(nr_subband * sizeof(struct ieee_subbandset) +
526 sizeof(domain->countrycode));
527
528 if (nr_subband) {
529 memcpy(domain->subband, priv->domainreg.subband,
530 nr_subband * sizeof(struct ieee_subbandset));
531
532 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
533 le16_to_cpu(domain->header.len) +
534 sizeof(struct mrvl_ie_header) +
535 S_DS_GEN);
536 } else {
537 cmd->size =
538 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
539 }
540
541 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, le16_to_cpu(cmd->size));
542
543 done:
544 lbs_deb_enter(LBS_DEB_11D);
545 return 0;
546 }
547
548 /**
549 * @brief This function parses countryinfo from AP and download country info to FW
550 * @param priv pointer to struct lbs_private
551 * @param resp pointer to command response buffer
552 * @return 0; -1
553 */
554 int lbs_ret_802_11d_domain_info(struct cmd_ds_command *resp)
555 {
556 struct cmd_ds_802_11d_domain_info *domaininfo = &resp->params.domaininforesp;
557 struct mrvl_ie_domain_param_set *domain = &domaininfo->domain;
558 u16 action = le16_to_cpu(domaininfo->action);
559 s16 ret = 0;
560 u8 nr_subband = 0;
561
562 lbs_deb_enter(LBS_DEB_11D);
563
564 lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
565 (int)le16_to_cpu(resp->size));
566
567 nr_subband = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
568 sizeof(struct ieee_subbandset);
569
570 lbs_deb_11d("domain info resp: nr_subband %d\n", nr_subband);
571
572 if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) {
573 lbs_deb_11d("Invalid Numrer of Subband returned!!\n");
574 return -1;
575 }
576
577 switch (action) {
578 case CMD_ACT_SET: /*Proc Set action */
579 break;
580
581 case CMD_ACT_GET:
582 break;
583 default:
584 lbs_deb_11d("Invalid action:%d\n", domaininfo->action);
585 ret = -1;
586 break;
587 }
588
589 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
590 return ret;
591 }
592
593 /**
594 * @brief This function parses countryinfo from AP and download country info to FW
595 * @param priv pointer to struct lbs_private
596 * @return 0; -1
597 */
598 int lbs_parse_dnld_countryinfo_11d(struct lbs_private *priv,
599 struct bss_descriptor * bss)
600 {
601 int ret;
602
603 lbs_deb_enter(LBS_DEB_11D);
604 if (priv->enable11d) {
605 memset(&priv->parsed_region_chan, 0,
606 sizeof(struct parsed_region_chan_11d));
607 ret = parse_domain_info_11d(&bss->countryinfo, 0,
608 &priv->parsed_region_chan);
609
610 if (ret == -1) {
611 lbs_deb_11d("error parsing domain_info from AP\n");
612 goto done;
613 }
614
615 memset(&priv->domainreg, 0,
616 sizeof(struct lbs_802_11d_domain_reg));
617 generate_domain_info_11d(&priv->parsed_region_chan,
618 &priv->domainreg);
619
620 ret = set_domain_info_11d(priv);
621
622 if (ret) {
623 lbs_deb_11d("error setting domain info\n");
624 goto done;
625 }
626 }
627 ret = 0;
628
629 done:
630 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
631 return ret;
632 }
633
634 /**
635 * @brief This function generates 11D info from user specified regioncode and download to FW
636 * @param priv pointer to struct lbs_private
637 * @return 0; -1
638 */
639 int lbs_create_dnld_countryinfo_11d(struct lbs_private *priv)
640 {
641 int ret;
642 struct region_channel *region_chan;
643 u8 j;
644
645 lbs_deb_enter(LBS_DEB_11D);
646 lbs_deb_11d("curbssparams.band %d\n", priv->curbssparams.band);
647
648 if (priv->enable11d) {
649 /* update parsed_region_chan_11; dnld domaininf to FW */
650
651 for (j = 0; j < ARRAY_SIZE(priv->region_channel); j++) {
652 region_chan = &priv->region_channel[j];
653
654 lbs_deb_11d("%d region_chan->band %d\n", j,
655 region_chan->band);
656
657 if (!region_chan || !region_chan->valid
658 || !region_chan->CFP)
659 continue;
660 if (region_chan->band != priv->curbssparams.band)
661 continue;
662 break;
663 }
664
665 if (j >= ARRAY_SIZE(priv->region_channel)) {
666 lbs_deb_11d("region_chan not found, band %d\n",
667 priv->curbssparams.band);
668 ret = -1;
669 goto done;
670 }
671
672 memset(&priv->parsed_region_chan, 0,
673 sizeof(struct parsed_region_chan_11d));
674 lbs_generate_parsed_region_chan_11d(region_chan,
675 &priv->
676 parsed_region_chan);
677
678 memset(&priv->domainreg, 0,
679 sizeof(struct lbs_802_11d_domain_reg));
680 generate_domain_info_11d(&priv->parsed_region_chan,
681 &priv->domainreg);
682
683 ret = set_domain_info_11d(priv);
684
685 if (ret) {
686 lbs_deb_11d("error setting domain info\n");
687 goto done;
688 }
689
690 }
691 ret = 0;
692
693 done:
694 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
695 return ret;
696 }
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