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[openwrt.git] / package / libertas / src / 11d.c
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; region[i] && i < COUNTRY_CODE_LEN; 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 band, 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, u8 band)
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 ieeetypes_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 band, 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, band, &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 ieeetypes_countryinfofullset*
306 countryinfo,
307 u8 band,
308 struct parsed_region_chan_11d *
309 parsed_region_chan)
310 {
311 u8 nr_subband, nrchan;
312 u8 lastchan, firstchan;
313 u8 region;
314 u8 curchan = 0;
315
316 u8 idx = 0; /*chan index in parsed_region_chan */
317
318 u8 j, i;
319
320 lbs_deb_enter(LBS_DEB_11D);
321
322 /*validation Rules:
323 1. valid region Code
324 2. First Chan increment
325 3. channel range no overlap
326 4. channel is valid?
327 5. channel is supported by region?
328 6. Others
329 */
330
331 lbs_deb_hex(LBS_DEB_11D, "countryinfo", (u8 *) countryinfo, 30);
332
333 if ((*(countryinfo->countrycode)) == 0
334 || (countryinfo->len <= COUNTRY_CODE_LEN)) {
335 /* No region Info or Wrong region info: treat as No 11D info */
336 goto done;
337 }
338
339 /*Step1: check region_code */
340 parsed_region_chan->region = region =
341 lbs_region_2_code(countryinfo->countrycode);
342
343 lbs_deb_11d("regioncode=%x\n", (u8) parsed_region_chan->region);
344 lbs_deb_hex(LBS_DEB_11D, "countrycode", (char *)countryinfo->countrycode,
345 COUNTRY_CODE_LEN);
346
347 parsed_region_chan->band = band;
348
349 memcpy(parsed_region_chan->countrycode, countryinfo->countrycode,
350 COUNTRY_CODE_LEN);
351
352 nr_subband = (countryinfo->len - COUNTRY_CODE_LEN) /
353 sizeof(struct ieeetypes_subbandset);
354
355 for (j = 0, lastchan = 0; j < nr_subband; j++) {
356
357 if (countryinfo->subband[j].firstchan <= lastchan) {
358 /*Step2&3. Check First Chan Num increment and no overlap */
359 lbs_deb_11d("chan %d>%d, overlap\n",
360 countryinfo->subband[j].firstchan, lastchan);
361 continue;
362 }
363
364 firstchan = countryinfo->subband[j].firstchan;
365 nrchan = countryinfo->subband[j].nrchan;
366
367 for (i = 0; idx < MAX_NO_OF_CHAN && i < nrchan; i++) {
368 /*step4: channel is supported? */
369
370 if (!lbs_get_chan_11d(band, firstchan, i, &curchan)) {
371 /* Chan is not found in UN table */
372 lbs_deb_11d("chan is not supported: %d \n", i);
373 break;
374 }
375
376 lastchan = curchan;
377
378 if (lbs_region_chan_supported_11d
379 (region, band, curchan)) {
380 /*step5: Check if curchan is supported by mrvl in region */
381 parsed_region_chan->chanpwr[idx].chan = curchan;
382 parsed_region_chan->chanpwr[idx].pwr =
383 countryinfo->subband[j].maxtxpwr;
384 idx++;
385 } else {
386 /*not supported and ignore the chan */
387 lbs_deb_11d(
388 "i %d, chan %d unsupported in region %x, band %d\n",
389 i, curchan, region, band);
390 }
391 }
392
393 /*Step6: Add other checking if any */
394
395 }
396
397 parsed_region_chan->nr_chan = idx;
398
399 lbs_deb_11d("nrchan=%x\n", parsed_region_chan->nr_chan);
400 lbs_deb_hex(LBS_DEB_11D, "parsed_region_chan", (u8 *) parsed_region_chan,
401 2 + COUNTRY_CODE_LEN + sizeof(struct parsed_region_chan_11d) * idx);
402
403 done:
404 lbs_deb_enter(LBS_DEB_11D);
405 return 0;
406 }
407
408 /**
409 * @brief This function calculates the scan type for channels
410 * @param chan chan number
411 * @param parsed_region_chan pointer to parsed_region_chan_11d
412 * @return PASSIVE if chan is unknown; ACTIVE if chan is known
413 */
414 u8 lbs_get_scan_type_11d(u8 chan,
415 struct parsed_region_chan_11d * parsed_region_chan)
416 {
417 u8 scan_type = CMD_SCAN_TYPE_PASSIVE;
418
419 lbs_deb_enter(LBS_DEB_11D);
420
421 if (lbs_channel_known_11d(chan, parsed_region_chan)) {
422 lbs_deb_11d("found, do active scan\n");
423 scan_type = CMD_SCAN_TYPE_ACTIVE;
424 } else {
425 lbs_deb_11d("not found, do passive scan\n");
426 }
427
428 lbs_deb_leave_args(LBS_DEB_11D, "ret scan_type %d", scan_type);
429 return scan_type;
430
431 }
432
433 void lbs_init_11d(struct lbs_private *priv)
434 {
435 priv->enable11d = 0;
436 memset(&(priv->parsed_region_chan), 0,
437 sizeof(struct parsed_region_chan_11d));
438 return;
439 }
440
441 /**
442 * @brief This function sets DOMAIN INFO to FW
443 * @param priv pointer to struct lbs_private
444 * @return 0; -1
445 */
446 static int set_domain_info_11d(struct lbs_private *priv)
447 {
448 int ret;
449
450 if (!priv->enable11d) {
451 lbs_deb_11d("dnld domain Info with 11d disabled\n");
452 return 0;
453 }
454
455 ret = lbs_prepare_and_send_command(priv, CMD_802_11D_DOMAIN_INFO,
456 CMD_ACT_SET,
457 CMD_OPTION_WAITFORRSP, 0, NULL);
458 if (ret)
459 lbs_deb_11d("fail to dnld domain info\n");
460
461 return ret;
462 }
463
464 /**
465 * @brief This function setups scan channels
466 * @param priv pointer to struct lbs_private
467 * @param band band
468 * @return 0
469 */
470 int lbs_set_universaltable(struct lbs_private *priv, u8 band)
471 {
472 u16 size = sizeof(struct chan_freq_power);
473 u16 i = 0;
474
475 memset(priv->universal_channel, 0,
476 sizeof(priv->universal_channel));
477
478 priv->universal_channel[i].nrcfp =
479 sizeof(channel_freq_power_UN_BG) / size;
480 lbs_deb_11d("BG-band nrcfp %d\n",
481 priv->universal_channel[i].nrcfp);
482
483 priv->universal_channel[i].CFP = channel_freq_power_UN_BG;
484 priv->universal_channel[i].valid = 1;
485 priv->universal_channel[i].region = UNIVERSAL_REGION_CODE;
486 priv->universal_channel[i].band = band;
487 i++;
488
489 return 0;
490 }
491
492 /**
493 * @brief This function implements command CMD_802_11D_DOMAIN_INFO
494 * @param priv pointer to struct lbs_private
495 * @param cmd pointer to cmd buffer
496 * @param cmdno cmd ID
497 * @param cmdOption cmd action
498 * @return 0
499 */
500 int lbs_cmd_802_11d_domain_info(struct lbs_private *priv,
501 struct cmd_ds_command *cmd, u16 cmdno,
502 u16 cmdoption)
503 {
504 struct cmd_ds_802_11d_domain_info *pdomaininfo =
505 &cmd->params.domaininfo;
506 struct mrvlietypes_domainparamset *domain = &pdomaininfo->domain;
507 u8 nr_subband = priv->domainreg.nr_subband;
508
509 lbs_deb_enter(LBS_DEB_11D);
510
511 lbs_deb_11d("nr_subband=%x\n", nr_subband);
512
513 cmd->command = cpu_to_le16(cmdno);
514 pdomaininfo->action = cpu_to_le16(cmdoption);
515 if (cmdoption == CMD_ACT_GET) {
516 cmd->size =
517 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
518 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
519 le16_to_cpu(cmd->size));
520 goto done;
521 }
522
523 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
524 memcpy(domain->countrycode, priv->domainreg.countrycode,
525 sizeof(domain->countrycode));
526
527 domain->header.len =
528 cpu_to_le16(nr_subband * sizeof(struct ieeetypes_subbandset) +
529 sizeof(domain->countrycode));
530
531 if (nr_subband) {
532 memcpy(domain->subband, priv->domainreg.subband,
533 nr_subband * sizeof(struct ieeetypes_subbandset));
534
535 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
536 le16_to_cpu(domain->header.len) +
537 sizeof(struct mrvlietypesheader) +
538 S_DS_GEN);
539 } else {
540 cmd->size =
541 cpu_to_le16(sizeof(pdomaininfo->action) + S_DS_GEN);
542 }
543
544 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd, le16_to_cpu(cmd->size));
545
546 done:
547 lbs_deb_enter(LBS_DEB_11D);
548 return 0;
549 }
550
551 /**
552 * @brief This function parses countryinfo from AP and download country info to FW
553 * @param priv pointer to struct lbs_private
554 * @param resp pointer to command response buffer
555 * @return 0; -1
556 */
557 int lbs_ret_802_11d_domain_info(struct lbs_private *priv,
558 struct cmd_ds_command *resp)
559 {
560 struct cmd_ds_802_11d_domain_info *domaininfo = &resp->params.domaininforesp;
561 struct mrvlietypes_domainparamset *domain = &domaininfo->domain;
562 u16 action = le16_to_cpu(domaininfo->action);
563 s16 ret = 0;
564 u8 nr_subband = 0;
565
566 lbs_deb_enter(LBS_DEB_11D);
567
568 lbs_deb_hex(LBS_DEB_11D, "domain info resp", (u8 *) resp,
569 (int)le16_to_cpu(resp->size));
570
571 nr_subband = (le16_to_cpu(domain->header.len) - COUNTRY_CODE_LEN) /
572 sizeof(struct ieeetypes_subbandset);
573
574 lbs_deb_11d("domain info resp: nr_subband %d\n", nr_subband);
575
576 if (nr_subband > MRVDRV_MAX_SUBBAND_802_11D) {
577 lbs_deb_11d("Invalid Numrer of Subband returned!!\n");
578 return -1;
579 }
580
581 switch (action) {
582 case CMD_ACT_SET: /*Proc Set action */
583 break;
584
585 case CMD_ACT_GET:
586 break;
587 default:
588 lbs_deb_11d("Invalid action:%d\n", domaininfo->action);
589 ret = -1;
590 break;
591 }
592
593 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
594 return ret;
595 }
596
597 /**
598 * @brief This function parses countryinfo from AP and download country info to FW
599 * @param priv pointer to struct lbs_private
600 * @return 0; -1
601 */
602 int lbs_parse_dnld_countryinfo_11d(struct lbs_private *priv,
603 struct bss_descriptor * bss)
604 {
605 int ret;
606
607 lbs_deb_enter(LBS_DEB_11D);
608 if (priv->enable11d) {
609 memset(&priv->parsed_region_chan, 0,
610 sizeof(struct parsed_region_chan_11d));
611 ret = parse_domain_info_11d(&bss->countryinfo, 0,
612 &priv->parsed_region_chan);
613
614 if (ret == -1) {
615 lbs_deb_11d("error parsing domain_info from AP\n");
616 goto done;
617 }
618
619 memset(&priv->domainreg, 0,
620 sizeof(struct lbs_802_11d_domain_reg));
621 generate_domain_info_11d(&priv->parsed_region_chan,
622 &priv->domainreg);
623
624 ret = set_domain_info_11d(priv);
625
626 if (ret) {
627 lbs_deb_11d("error setting domain info\n");
628 goto done;
629 }
630 }
631 ret = 0;
632
633 done:
634 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
635 return ret;
636 }
637
638 /**
639 * @brief This function generates 11D info from user specified regioncode and download to FW
640 * @param priv pointer to struct lbs_private
641 * @return 0; -1
642 */
643 int lbs_create_dnld_countryinfo_11d(struct lbs_private *priv)
644 {
645 int ret;
646 struct region_channel *region_chan;
647 u8 j;
648
649 lbs_deb_enter(LBS_DEB_11D);
650 lbs_deb_11d("curbssparams.band %d\n", priv->curbssparams.band);
651
652 if (priv->enable11d) {
653 /* update parsed_region_chan_11; dnld domaininf to FW */
654
655 for (j = 0; j < ARRAY_SIZE(priv->region_channel); j++) {
656 region_chan = &priv->region_channel[j];
657
658 lbs_deb_11d("%d region_chan->band %d\n", j,
659 region_chan->band);
660
661 if (!region_chan || !region_chan->valid
662 || !region_chan->CFP)
663 continue;
664 if (region_chan->band != priv->curbssparams.band)
665 continue;
666 break;
667 }
668
669 if (j >= ARRAY_SIZE(priv->region_channel)) {
670 lbs_deb_11d("region_chan not found, band %d\n",
671 priv->curbssparams.band);
672 ret = -1;
673 goto done;
674 }
675
676 memset(&priv->parsed_region_chan, 0,
677 sizeof(struct parsed_region_chan_11d));
678 lbs_generate_parsed_region_chan_11d(region_chan,
679 &priv->
680 parsed_region_chan);
681
682 memset(&priv->domainreg, 0,
683 sizeof(struct lbs_802_11d_domain_reg));
684 generate_domain_info_11d(&priv->parsed_region_chan,
685 &priv->domainreg);
686
687 ret = set_domain_info_11d(priv);
688
689 if (ret) {
690 lbs_deb_11d("error setting domain info\n");
691 goto done;
692 }
693
694 }
695 ret = 0;
696
697 done:
698 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
699 return ret;
700 }
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