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netdev_alloc_pcpu_stats: use less common iterator variable
[linux-2.6/btrfs-unstable.git] / drivers / target / iscsi / iscsi_target_parameters.c
blobd4f9e96456978eab75e280e123308db09f6e95d2
1 /*******************************************************************************
2 * This file contains main functions related to iSCSI Parameter negotiation.
3 *
4 * (c) Copyright 2007-2013 Datera, Inc.
5 *
6 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 ******************************************************************************/
18
19 #include <linux/slab.h>
20
21 #include <target/iscsi/iscsi_target_core.h>
22 #include "iscsi_target_util.h"
23 #include "iscsi_target_parameters.h"
24
25 int iscsi_login_rx_data(
26 struct iscsi_conn *conn,
27 char *buf,
28 int length)
29 {
30 int rx_got;
31 struct kvec iov;
32
33 memset(&iov, 0, sizeof(struct kvec));
34 iov.iov_len = length;
35 iov.iov_base = buf;
36
37 /*
38 * Initial Marker-less Interval.
39 * Add the values regardless of IFMarker/OFMarker, considering
40 * it may not be negoitated yet.
41 */
42 conn->of_marker += length;
43
44 rx_got = rx_data(conn, &iov, 1, length);
45 if (rx_got != length) {
46 pr_err("rx_data returned %d, expecting %d.\n",
47 rx_got, length);
48 return -1;
49 }
50
51 return 0 ;
52 }
53
54 int iscsi_login_tx_data(
55 struct iscsi_conn *conn,
56 char *pdu_buf,
57 char *text_buf,
58 int text_length)
59 {
60 int length, tx_sent, iov_cnt = 1;
61 struct kvec iov[2];
62
63 length = (ISCSI_HDR_LEN + text_length);
64
65 memset(&iov[0], 0, 2 * sizeof(struct kvec));
66 iov[0].iov_len = ISCSI_HDR_LEN;
67 iov[0].iov_base = pdu_buf;
68
69 if (text_buf && text_length) {
70 iov[1].iov_len = text_length;
71 iov[1].iov_base = text_buf;
72 iov_cnt++;
73 }
74
75 /*
76 * Initial Marker-less Interval.
77 * Add the values regardless of IFMarker/OFMarker, considering
78 * it may not be negoitated yet.
79 */
80 conn->if_marker += length;
81
82 tx_sent = tx_data(conn, &iov[0], iov_cnt, length);
83 if (tx_sent != length) {
84 pr_err("tx_data returned %d, expecting %d.\n",
85 tx_sent, length);
86 return -1;
87 }
88
89 return 0;
90 }
91
92 void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
93 {
94 pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
95 "CRC32C" : "None");
96 pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
97 "CRC32C" : "None");
98 pr_debug("MaxRecvDataSegmentLength: %u\n",
99 conn_ops->MaxRecvDataSegmentLength);
100 pr_debug("OFMarker: %s\n", (conn_ops->OFMarker) ? "Yes" : "No");
101 pr_debug("IFMarker: %s\n", (conn_ops->IFMarker) ? "Yes" : "No");
102 if (conn_ops->OFMarker)
103 pr_debug("OFMarkInt: %u\n", conn_ops->OFMarkInt);
104 if (conn_ops->IFMarker)
105 pr_debug("IFMarkInt: %u\n", conn_ops->IFMarkInt);
106 }
107
108 void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
109 {
110 pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName);
111 pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias);
112 pr_debug("TargetName: %s\n", sess_ops->TargetName);
113 pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias);
114 pr_debug("TargetPortalGroupTag: %hu\n",
115 sess_ops->TargetPortalGroupTag);
116 pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections);
117 pr_debug("InitialR2T: %s\n",
118 (sess_ops->InitialR2T) ? "Yes" : "No");
119 pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ?
120 "Yes" : "No");
121 pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength);
122 pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength);
123 pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait);
124 pr_debug("DefaultTime2Retain: %hu\n",
125 sess_ops->DefaultTime2Retain);
126 pr_debug("MaxOutstandingR2T: %hu\n",
127 sess_ops->MaxOutstandingR2T);
128 pr_debug("DataPDUInOrder: %s\n",
129 (sess_ops->DataPDUInOrder) ? "Yes" : "No");
130 pr_debug("DataSequenceInOrder: %s\n",
131 (sess_ops->DataSequenceInOrder) ? "Yes" : "No");
132 pr_debug("ErrorRecoveryLevel: %hu\n",
133 sess_ops->ErrorRecoveryLevel);
134 pr_debug("SessionType: %s\n", (sess_ops->SessionType) ?
135 "Discovery" : "Normal");
136 }
137
138 void iscsi_print_params(struct iscsi_param_list *param_list)
139 {
140 struct iscsi_param *param;
141
142 list_for_each_entry(param, &param_list->param_list, p_list)
143 pr_debug("%s: %s\n", param->name, param->value);
144 }
145
146 static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list,
147 char *name, char *value, u8 phase, u8 scope, u8 sender,
148 u16 type_range, u8 use)
149 {
150 struct iscsi_param *param = NULL;
151
152 param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
153 if (!param) {
154 pr_err("Unable to allocate memory for parameter.\n");
155 goto out;
156 }
157 INIT_LIST_HEAD(&param->p_list);
158
159 param->name = kstrdup(name, GFP_KERNEL);
160 if (!param->name) {
161 pr_err("Unable to allocate memory for parameter name.\n");
162 goto out;
163 }
164
165 param->value = kstrdup(value, GFP_KERNEL);
166 if (!param->value) {
167 pr_err("Unable to allocate memory for parameter value.\n");
168 goto out;
169 }
170
171 param->phase = phase;
172 param->scope = scope;
173 param->sender = sender;
174 param->use = use;
175 param->type_range = type_range;
176
177 switch (param->type_range) {
178 case TYPERANGE_BOOL_AND:
179 param->type = TYPE_BOOL_AND;
180 break;
181 case TYPERANGE_BOOL_OR:
182 param->type = TYPE_BOOL_OR;
183 break;
184 case TYPERANGE_0_TO_2:
185 case TYPERANGE_0_TO_3600:
186 case TYPERANGE_0_TO_32767:
187 case TYPERANGE_0_TO_65535:
188 case TYPERANGE_1_TO_65535:
189 case TYPERANGE_2_TO_3600:
190 case TYPERANGE_512_TO_16777215:
191 param->type = TYPE_NUMBER;
192 break;
193 case TYPERANGE_AUTH:
194 case TYPERANGE_DIGEST:
195 param->type = TYPE_VALUE_LIST | TYPE_STRING;
196 break;
197 case TYPERANGE_MARKINT:
198 param->type = TYPE_NUMBER_RANGE;
199 param->type_range |= TYPERANGE_1_TO_65535;
200 break;
201 case TYPERANGE_ISCSINAME:
202 case TYPERANGE_SESSIONTYPE:
203 case TYPERANGE_TARGETADDRESS:
204 case TYPERANGE_UTF8:
205 param->type = TYPE_STRING;
206 break;
207 default:
208 pr_err("Unknown type_range 0x%02x\n",
209 param->type_range);
210 goto out;
211 }
212 list_add_tail(&param->p_list, &param_list->param_list);
213
214 return param;
215 out:
216 if (param) {
217 kfree(param->value);
218 kfree(param->name);
219 kfree(param);
220 }
221
222 return NULL;
223 }
224
225 /* #warning Add extension keys */
226 int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
227 {
228 struct iscsi_param *param = NULL;
229 struct iscsi_param_list *pl;
230
231 pl = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
232 if (!pl) {
233 pr_err("Unable to allocate memory for"
234 " struct iscsi_param_list.\n");
235 return -1 ;
236 }
237 INIT_LIST_HEAD(&pl->param_list);
238 INIT_LIST_HEAD(&pl->extra_response_list);
239
240 /*
241 * The format for setting the initial parameter definitions are:
242 *
243 * Parameter name:
244 * Initial value:
245 * Allowable phase:
246 * Scope:
247 * Allowable senders:
248 * Typerange:
249 * Use:
250 */
251 param = iscsi_set_default_param(pl, AUTHMETHOD, INITIAL_AUTHMETHOD,
252 PHASE_SECURITY, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
253 TYPERANGE_AUTH, USE_INITIAL_ONLY);
254 if (!param)
255 goto out;
256
257 param = iscsi_set_default_param(pl, HEADERDIGEST, INITIAL_HEADERDIGEST,
258 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
259 TYPERANGE_DIGEST, USE_INITIAL_ONLY);
260 if (!param)
261 goto out;
262
263 param = iscsi_set_default_param(pl, DATADIGEST, INITIAL_DATADIGEST,
264 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
265 TYPERANGE_DIGEST, USE_INITIAL_ONLY);
266 if (!param)
267 goto out;
268
269 param = iscsi_set_default_param(pl, MAXCONNECTIONS,
270 INITIAL_MAXCONNECTIONS, PHASE_OPERATIONAL,
271 SCOPE_SESSION_WIDE, SENDER_BOTH,
272 TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
273 if (!param)
274 goto out;
275
276 param = iscsi_set_default_param(pl, SENDTARGETS, INITIAL_SENDTARGETS,
277 PHASE_FFP0, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
278 TYPERANGE_UTF8, 0);
279 if (!param)
280 goto out;
281
282 param = iscsi_set_default_param(pl, TARGETNAME, INITIAL_TARGETNAME,
283 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_BOTH,
284 TYPERANGE_ISCSINAME, USE_ALL);
285 if (!param)
286 goto out;
287
288 param = iscsi_set_default_param(pl, INITIATORNAME,
289 INITIAL_INITIATORNAME, PHASE_DECLARATIVE,
290 SCOPE_SESSION_WIDE, SENDER_INITIATOR,
291 TYPERANGE_ISCSINAME, USE_INITIAL_ONLY);
292 if (!param)
293 goto out;
294
295 param = iscsi_set_default_param(pl, TARGETALIAS, INITIAL_TARGETALIAS,
296 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
297 TYPERANGE_UTF8, USE_ALL);
298 if (!param)
299 goto out;
300
301 param = iscsi_set_default_param(pl, INITIATORALIAS,
302 INITIAL_INITIATORALIAS, PHASE_DECLARATIVE,
303 SCOPE_SESSION_WIDE, SENDER_INITIATOR, TYPERANGE_UTF8,
304 USE_ALL);
305 if (!param)
306 goto out;
307
308 param = iscsi_set_default_param(pl, TARGETADDRESS,
309 INITIAL_TARGETADDRESS, PHASE_DECLARATIVE,
310 SCOPE_SESSION_WIDE, SENDER_TARGET,
311 TYPERANGE_TARGETADDRESS, USE_ALL);
312 if (!param)
313 goto out;
314
315 param = iscsi_set_default_param(pl, TARGETPORTALGROUPTAG,
316 INITIAL_TARGETPORTALGROUPTAG,
317 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
318 TYPERANGE_0_TO_65535, USE_INITIAL_ONLY);
319 if (!param)
320 goto out;
321
322 param = iscsi_set_default_param(pl, INITIALR2T, INITIAL_INITIALR2T,
323 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
324 TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
325 if (!param)
326 goto out;
327
328 param = iscsi_set_default_param(pl, IMMEDIATEDATA,
329 INITIAL_IMMEDIATEDATA, PHASE_OPERATIONAL,
330 SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_AND,
331 USE_LEADING_ONLY);
332 if (!param)
333 goto out;
334
335 param = iscsi_set_default_param(pl, MAXXMITDATASEGMENTLENGTH,
336 INITIAL_MAXXMITDATASEGMENTLENGTH,
337 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
338 TYPERANGE_512_TO_16777215, USE_ALL);
339 if (!param)
340 goto out;
341
342 param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH,
343 INITIAL_MAXRECVDATASEGMENTLENGTH,
344 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
345 TYPERANGE_512_TO_16777215, USE_ALL);
346 if (!param)
347 goto out;
348
349 param = iscsi_set_default_param(pl, MAXBURSTLENGTH,
350 INITIAL_MAXBURSTLENGTH, PHASE_OPERATIONAL,
351 SCOPE_SESSION_WIDE, SENDER_BOTH,
352 TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
353 if (!param)
354 goto out;
355
356 param = iscsi_set_default_param(pl, FIRSTBURSTLENGTH,
357 INITIAL_FIRSTBURSTLENGTH,
358 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
359 TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
360 if (!param)
361 goto out;
362
363 param = iscsi_set_default_param(pl, DEFAULTTIME2WAIT,
364 INITIAL_DEFAULTTIME2WAIT,
365 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
366 TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
367 if (!param)
368 goto out;
369
370 param = iscsi_set_default_param(pl, DEFAULTTIME2RETAIN,
371 INITIAL_DEFAULTTIME2RETAIN,
372 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
373 TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
374 if (!param)
375 goto out;
376
377 param = iscsi_set_default_param(pl, MAXOUTSTANDINGR2T,
378 INITIAL_MAXOUTSTANDINGR2T,
379 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
380 TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
381 if (!param)
382 goto out;
383
384 param = iscsi_set_default_param(pl, DATAPDUINORDER,
385 INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL,
386 SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR,
387 USE_LEADING_ONLY);
388 if (!param)
389 goto out;
390
391 param = iscsi_set_default_param(pl, DATASEQUENCEINORDER,
392 INITIAL_DATASEQUENCEINORDER,
393 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
394 TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
395 if (!param)
396 goto out;
397
398 param = iscsi_set_default_param(pl, ERRORRECOVERYLEVEL,
399 INITIAL_ERRORRECOVERYLEVEL,
400 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
401 TYPERANGE_0_TO_2, USE_LEADING_ONLY);
402 if (!param)
403 goto out;
404
405 param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE,
406 PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
407 TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY);
408 if (!param)
409 goto out;
410
411 param = iscsi_set_default_param(pl, IFMARKER, INITIAL_IFMARKER,
412 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
413 TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
414 if (!param)
415 goto out;
416
417 param = iscsi_set_default_param(pl, OFMARKER, INITIAL_OFMARKER,
418 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
419 TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
420 if (!param)
421 goto out;
422
423 param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT,
424 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
425 TYPERANGE_MARKINT, USE_INITIAL_ONLY);
426 if (!param)
427 goto out;
428
429 param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT,
430 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
431 TYPERANGE_MARKINT, USE_INITIAL_ONLY);
432 if (!param)
433 goto out;
434 /*
435 * Extra parameters for ISER from RFC-5046
436 */
437 param = iscsi_set_default_param(pl, RDMAEXTENSIONS, INITIAL_RDMAEXTENSIONS,
438 PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
439 TYPERANGE_BOOL_AND, USE_LEADING_ONLY);
440 if (!param)
441 goto out;
442
443 param = iscsi_set_default_param(pl, INITIATORRECVDATASEGMENTLENGTH,
444 INITIAL_INITIATORRECVDATASEGMENTLENGTH,
445 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
446 TYPERANGE_512_TO_16777215, USE_ALL);
447 if (!param)
448 goto out;
449
450 param = iscsi_set_default_param(pl, TARGETRECVDATASEGMENTLENGTH,
451 INITIAL_TARGETRECVDATASEGMENTLENGTH,
452 PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
453 TYPERANGE_512_TO_16777215, USE_ALL);
454 if (!param)
455 goto out;
456
457 *param_list_ptr = pl;
458 return 0;
459 out:
460 iscsi_release_param_list(pl);
461 return -1;
462 }
463
464 int iscsi_set_keys_to_negotiate(
465 struct iscsi_param_list *param_list,
466 bool iser)
467 {
468 struct iscsi_param *param;
469
470 param_list->iser = iser;
471
472 list_for_each_entry(param, &param_list->param_list, p_list) {
473 param->state = 0;
474 if (!strcmp(param->name, AUTHMETHOD)) {
475 SET_PSTATE_NEGOTIATE(param);
476 } else if (!strcmp(param->name, HEADERDIGEST)) {
477 if (!iser)
478 SET_PSTATE_NEGOTIATE(param);
479 } else if (!strcmp(param->name, DATADIGEST)) {
480 if (!iser)
481 SET_PSTATE_NEGOTIATE(param);
482 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
483 SET_PSTATE_NEGOTIATE(param);
484 } else if (!strcmp(param->name, TARGETNAME)) {
485 continue;
486 } else if (!strcmp(param->name, INITIATORNAME)) {
487 continue;
488 } else if (!strcmp(param->name, TARGETALIAS)) {
489 if (param->value)
490 SET_PSTATE_NEGOTIATE(param);
491 } else if (!strcmp(param->name, INITIATORALIAS)) {
492 continue;
493 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
494 SET_PSTATE_NEGOTIATE(param);
495 } else if (!strcmp(param->name, INITIALR2T)) {
496 SET_PSTATE_NEGOTIATE(param);
497 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
498 SET_PSTATE_NEGOTIATE(param);
499 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
500 if (!iser)
501 SET_PSTATE_NEGOTIATE(param);
502 } else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
503 continue;
504 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
505 SET_PSTATE_NEGOTIATE(param);
506 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
507 SET_PSTATE_NEGOTIATE(param);
508 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
509 SET_PSTATE_NEGOTIATE(param);
510 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
511 SET_PSTATE_NEGOTIATE(param);
512 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
513 SET_PSTATE_NEGOTIATE(param);
514 } else if (!strcmp(param->name, DATAPDUINORDER)) {
515 SET_PSTATE_NEGOTIATE(param);
516 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
517 SET_PSTATE_NEGOTIATE(param);
518 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
519 SET_PSTATE_NEGOTIATE(param);
520 } else if (!strcmp(param->name, SESSIONTYPE)) {
521 SET_PSTATE_NEGOTIATE(param);
522 } else if (!strcmp(param->name, IFMARKER)) {
523 SET_PSTATE_NEGOTIATE(param);
524 } else if (!strcmp(param->name, OFMARKER)) {
525 SET_PSTATE_NEGOTIATE(param);
526 } else if (!strcmp(param->name, IFMARKINT)) {
527 SET_PSTATE_NEGOTIATE(param);
528 } else if (!strcmp(param->name, OFMARKINT)) {
529 SET_PSTATE_NEGOTIATE(param);
530 } else if (!strcmp(param->name, RDMAEXTENSIONS)) {
531 if (iser)
532 SET_PSTATE_NEGOTIATE(param);
533 } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
534 if (iser)
535 SET_PSTATE_NEGOTIATE(param);
536 } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
537 if (iser)
538 SET_PSTATE_NEGOTIATE(param);
539 }
540 }
541
542 return 0;
543 }
544
545 int iscsi_set_keys_irrelevant_for_discovery(
546 struct iscsi_param_list *param_list)
547 {
548 struct iscsi_param *param;
549
550 list_for_each_entry(param, &param_list->param_list, p_list) {
551 if (!strcmp(param->name, MAXCONNECTIONS))
552 param->state &= ~PSTATE_NEGOTIATE;
553 else if (!strcmp(param->name, INITIALR2T))
554 param->state &= ~PSTATE_NEGOTIATE;
555 else if (!strcmp(param->name, IMMEDIATEDATA))
556 param->state &= ~PSTATE_NEGOTIATE;
557 else if (!strcmp(param->name, MAXBURSTLENGTH))
558 param->state &= ~PSTATE_NEGOTIATE;
559 else if (!strcmp(param->name, FIRSTBURSTLENGTH))
560 param->state &= ~PSTATE_NEGOTIATE;
561 else if (!strcmp(param->name, MAXOUTSTANDINGR2T))
562 param->state &= ~PSTATE_NEGOTIATE;
563 else if (!strcmp(param->name, DATAPDUINORDER))
564 param->state &= ~PSTATE_NEGOTIATE;
565 else if (!strcmp(param->name, DATASEQUENCEINORDER))
566 param->state &= ~PSTATE_NEGOTIATE;
567 else if (!strcmp(param->name, ERRORRECOVERYLEVEL))
568 param->state &= ~PSTATE_NEGOTIATE;
569 else if (!strcmp(param->name, DEFAULTTIME2WAIT))
570 param->state &= ~PSTATE_NEGOTIATE;
571 else if (!strcmp(param->name, DEFAULTTIME2RETAIN))
572 param->state &= ~PSTATE_NEGOTIATE;
573 else if (!strcmp(param->name, IFMARKER))
574 param->state &= ~PSTATE_NEGOTIATE;
575 else if (!strcmp(param->name, OFMARKER))
576 param->state &= ~PSTATE_NEGOTIATE;
577 else if (!strcmp(param->name, IFMARKINT))
578 param->state &= ~PSTATE_NEGOTIATE;
579 else if (!strcmp(param->name, OFMARKINT))
580 param->state &= ~PSTATE_NEGOTIATE;
581 else if (!strcmp(param->name, RDMAEXTENSIONS))
582 param->state &= ~PSTATE_NEGOTIATE;
583 else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH))
584 param->state &= ~PSTATE_NEGOTIATE;
585 else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH))
586 param->state &= ~PSTATE_NEGOTIATE;
587 }
588
589 return 0;
590 }
591
592 int iscsi_copy_param_list(
593 struct iscsi_param_list **dst_param_list,
594 struct iscsi_param_list *src_param_list,
595 int leading)
596 {
597 struct iscsi_param *param = NULL;
598 struct iscsi_param *new_param = NULL;
599 struct iscsi_param_list *param_list = NULL;
600
601 param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
602 if (!param_list) {
603 pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
604 return -1;
605 }
606 INIT_LIST_HEAD(&param_list->param_list);
607 INIT_LIST_HEAD(&param_list->extra_response_list);
608
609 list_for_each_entry(param, &src_param_list->param_list, p_list) {
610 if (!leading && (param->scope & SCOPE_SESSION_WIDE)) {
611 if ((strcmp(param->name, "TargetName") != 0) &&
612 (strcmp(param->name, "InitiatorName") != 0) &&
613 (strcmp(param->name, "TargetPortalGroupTag") != 0))
614 continue;
615 }
616
617 new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
618 if (!new_param) {
619 pr_err("Unable to allocate memory for struct iscsi_param.\n");
620 goto err_out;
621 }
622
623 new_param->name = kstrdup(param->name, GFP_KERNEL);
624 new_param->value = kstrdup(param->value, GFP_KERNEL);
625 if (!new_param->value || !new_param->name) {
626 kfree(new_param->value);
627 kfree(new_param->name);
628 kfree(new_param);
629 pr_err("Unable to allocate memory for parameter name/value.\n");
630 goto err_out;
631 }
632
633 new_param->set_param = param->set_param;
634 new_param->phase = param->phase;
635 new_param->scope = param->scope;
636 new_param->sender = param->sender;
637 new_param->type = param->type;
638 new_param->use = param->use;
639 new_param->type_range = param->type_range;
640
641 list_add_tail(&new_param->p_list, &param_list->param_list);
642 }
643
644 if (!list_empty(&param_list->param_list)) {
645 *dst_param_list = param_list;
646 } else {
647 pr_err("No parameters allocated.\n");
648 goto err_out;
649 }
650
651 return 0;
652
653 err_out:
654 iscsi_release_param_list(param_list);
655 return -1;
656 }
657
658 static void iscsi_release_extra_responses(struct iscsi_param_list *param_list)
659 {
660 struct iscsi_extra_response *er, *er_tmp;
661
662 list_for_each_entry_safe(er, er_tmp, &param_list->extra_response_list,
663 er_list) {
664 list_del(&er->er_list);
665 kfree(er);
666 }
667 }
668
669 void iscsi_release_param_list(struct iscsi_param_list *param_list)
670 {
671 struct iscsi_param *param, *param_tmp;
672
673 list_for_each_entry_safe(param, param_tmp, &param_list->param_list,
674 p_list) {
675 list_del(&param->p_list);
676
677 kfree(param->name);
678 kfree(param->value);
679 kfree(param);
680 }
681
682 iscsi_release_extra_responses(param_list);
683
684 kfree(param_list);
685 }
686
687 struct iscsi_param *iscsi_find_param_from_key(
688 char *key,
689 struct iscsi_param_list *param_list)
690 {
691 struct iscsi_param *param;
692
693 if (!key || !param_list) {
694 pr_err("Key or parameter list pointer is NULL.\n");
695 return NULL;
696 }
697
698 list_for_each_entry(param, &param_list->param_list, p_list) {
699 if (!strcmp(key, param->name))
700 return param;
701 }
702
703 pr_err("Unable to locate key \"%s\".\n", key);
704 return NULL;
705 }
706
707 int iscsi_extract_key_value(char *textbuf, char **key, char **value)
708 {
709 *value = strchr(textbuf, '=');
710 if (!*value) {
711 pr_err("Unable to locate \"=\" separator for key,"
712 " ignoring request.\n");
713 return -1;
714 }
715
716 *key = textbuf;
717 **value = '\0';
718 *value = *value + 1;
719
720 return 0;
721 }
722
723 int iscsi_update_param_value(struct iscsi_param *param, char *value)
724 {
725 kfree(param->value);
726
727 param->value = kstrdup(value, GFP_KERNEL);
728 if (!param->value) {
729 pr_err("Unable to allocate memory for value.\n");
730 return -ENOMEM;
731 }
732
733 pr_debug("iSCSI Parameter updated to %s=%s\n",
734 param->name, param->value);
735 return 0;
736 }
737
738 static int iscsi_add_notunderstood_response(
739 char *key,
740 char *value,
741 struct iscsi_param_list *param_list)
742 {
743 struct iscsi_extra_response *extra_response;
744
745 if (strlen(value) > VALUE_MAXLEN) {
746 pr_err("Value for notunderstood key \"%s\" exceeds %d,"
747 " protocol error.\n", key, VALUE_MAXLEN);
748 return -1;
749 }
750
751 extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL);
752 if (!extra_response) {
753 pr_err("Unable to allocate memory for"
754 " struct iscsi_extra_response.\n");
755 return -1;
756 }
757 INIT_LIST_HEAD(&extra_response->er_list);
758
759 strlcpy(extra_response->key, key, sizeof(extra_response->key));
760 strlcpy(extra_response->value, NOTUNDERSTOOD,
761 sizeof(extra_response->value));
762
763 list_add_tail(&extra_response->er_list,
764 &param_list->extra_response_list);
765 return 0;
766 }
767
768 static int iscsi_check_for_auth_key(char *key)
769 {
770 /*
771 * RFC 1994
772 */
773 if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") ||
774 !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") ||
775 !strcmp(key, "CHAP_R"))
776 return 1;
777
778 /*
779 * RFC 2945
780 */
781 if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") ||
782 !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") ||
783 !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") ||
784 !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM"))
785 return 1;
786
787 return 0;
788 }
789
790 static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param)
791 {
792 if (IS_TYPE_BOOL_AND(param)) {
793 if (!strcmp(param->value, NO))
794 SET_PSTATE_REPLY_OPTIONAL(param);
795 } else if (IS_TYPE_BOOL_OR(param)) {
796 if (!strcmp(param->value, YES))
797 SET_PSTATE_REPLY_OPTIONAL(param);
798 /*
799 * Required for gPXE iSCSI boot client
800 */
801 if (!strcmp(param->name, IMMEDIATEDATA))
802 SET_PSTATE_REPLY_OPTIONAL(param);
803 } else if (IS_TYPE_NUMBER(param)) {
804 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
805 SET_PSTATE_REPLY_OPTIONAL(param);
806 /*
807 * The GlobalSAN iSCSI Initiator for MacOSX does
808 * not respond to MaxBurstLength, FirstBurstLength,
809 * DefaultTime2Wait or DefaultTime2Retain parameter keys.
810 * So, we set them to 'reply optional' here, and assume the
811 * the defaults from iscsi_parameters.h if the initiator
812 * is not RFC compliant and the keys are not negotiated.
813 */
814 if (!strcmp(param->name, MAXBURSTLENGTH))
815 SET_PSTATE_REPLY_OPTIONAL(param);
816 if (!strcmp(param->name, FIRSTBURSTLENGTH))
817 SET_PSTATE_REPLY_OPTIONAL(param);
818 if (!strcmp(param->name, DEFAULTTIME2WAIT))
819 SET_PSTATE_REPLY_OPTIONAL(param);
820 if (!strcmp(param->name, DEFAULTTIME2RETAIN))
821 SET_PSTATE_REPLY_OPTIONAL(param);
822 /*
823 * Required for gPXE iSCSI boot client
824 */
825 if (!strcmp(param->name, MAXCONNECTIONS))
826 SET_PSTATE_REPLY_OPTIONAL(param);
827 } else if (IS_PHASE_DECLARATIVE(param))
828 SET_PSTATE_REPLY_OPTIONAL(param);
829 }
830
831 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
832 {
833 if (strcmp(value, YES) && strcmp(value, NO)) {
834 pr_err("Illegal value for \"%s\", must be either"
835 " \"%s\" or \"%s\".\n", param->name, YES, NO);
836 return -1;
837 }
838
839 return 0;
840 }
841
842 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
843 {
844 char *tmpptr;
845 int value = 0;
846
847 value = simple_strtoul(value_ptr, &tmpptr, 0);
848
849 if (IS_TYPERANGE_0_TO_2(param)) {
850 if ((value < 0) || (value > 2)) {
851 pr_err("Illegal value for \"%s\", must be"
852 " between 0 and 2.\n", param->name);
853 return -1;
854 }
855 return 0;
856 }
857 if (IS_TYPERANGE_0_TO_3600(param)) {
858 if ((value < 0) || (value > 3600)) {
859 pr_err("Illegal value for \"%s\", must be"
860 " between 0 and 3600.\n", param->name);
861 return -1;
862 }
863 return 0;
864 }
865 if (IS_TYPERANGE_0_TO_32767(param)) {
866 if ((value < 0) || (value > 32767)) {
867 pr_err("Illegal value for \"%s\", must be"
868 " between 0 and 32767.\n", param->name);
869 return -1;
870 }
871 return 0;
872 }
873 if (IS_TYPERANGE_0_TO_65535(param)) {
874 if ((value < 0) || (value > 65535)) {
875 pr_err("Illegal value for \"%s\", must be"
876 " between 0 and 65535.\n", param->name);
877 return -1;
878 }
879 return 0;
880 }
881 if (IS_TYPERANGE_1_TO_65535(param)) {
882 if ((value < 1) || (value > 65535)) {
883 pr_err("Illegal value for \"%s\", must be"
884 " between 1 and 65535.\n", param->name);
885 return -1;
886 }
887 return 0;
888 }
889 if (IS_TYPERANGE_2_TO_3600(param)) {
890 if ((value < 2) || (value > 3600)) {
891 pr_err("Illegal value for \"%s\", must be"
892 " between 2 and 3600.\n", param->name);
893 return -1;
894 }
895 return 0;
896 }
897 if (IS_TYPERANGE_512_TO_16777215(param)) {
898 if ((value < 512) || (value > 16777215)) {
899 pr_err("Illegal value for \"%s\", must be"
900 " between 512 and 16777215.\n", param->name);
901 return -1;
902 }
903 return 0;
904 }
905
906 return 0;
907 }
908
909 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
910 {
911 char *left_val_ptr = NULL, *right_val_ptr = NULL;
912 char *tilde_ptr = NULL;
913 u32 left_val, right_val, local_left_val;
914
915 if (strcmp(param->name, IFMARKINT) &&
916 strcmp(param->name, OFMARKINT)) {
917 pr_err("Only parameters \"%s\" or \"%s\" may contain a"
918 " numerical range value.\n", IFMARKINT, OFMARKINT);
919 return -1;
920 }
921
922 if (IS_PSTATE_PROPOSER(param))
923 return 0;
924
925 tilde_ptr = strchr(value, '~');
926 if (!tilde_ptr) {
927 pr_err("Unable to locate numerical range indicator"
928 " \"~\" for \"%s\".\n", param->name);
929 return -1;
930 }
931 *tilde_ptr = '\0';
932
933 left_val_ptr = value;
934 right_val_ptr = value + strlen(left_val_ptr) + 1;
935
936 if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
937 return -1;
938 if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
939 return -1;
940
941 left_val = simple_strtoul(left_val_ptr, NULL, 0);
942 right_val = simple_strtoul(right_val_ptr, NULL, 0);
943 *tilde_ptr = '~';
944
945 if (right_val < left_val) {
946 pr_err("Numerical range for parameter \"%s\" contains"
947 " a right value which is less than the left.\n",
948 param->name);
949 return -1;
950 }
951
952 /*
953 * For now, enforce reasonable defaults for [I,O]FMarkInt.
954 */
955 tilde_ptr = strchr(param->value, '~');
956 if (!tilde_ptr) {
957 pr_err("Unable to locate numerical range indicator"
958 " \"~\" for \"%s\".\n", param->name);
959 return -1;
960 }
961 *tilde_ptr = '\0';
962
963 left_val_ptr = param->value;
964 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
965
966 local_left_val = simple_strtoul(left_val_ptr, NULL, 0);
967 *tilde_ptr = '~';
968
969 if (param->set_param) {
970 if ((left_val < local_left_val) ||
971 (right_val < local_left_val)) {
972 pr_err("Passed value range \"%u~%u\" is below"
973 " minimum left value \"%u\" for key \"%s\","
974 " rejecting.\n", left_val, right_val,
975 local_left_val, param->name);
976 return -1;
977 }
978 } else {
979 if ((left_val < local_left_val) &&
980 (right_val < local_left_val)) {
981 pr_err("Received value range \"%u~%u\" is"
982 " below minimum left value \"%u\" for key"
983 " \"%s\", rejecting.\n", left_val, right_val,
984 local_left_val, param->name);
985 SET_PSTATE_REJECT(param);
986 if (iscsi_update_param_value(param, REJECT) < 0)
987 return -1;
988 }
989 }
990
991 return 0;
992 }
993
994 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
995 {
996 if (IS_PSTATE_PROPOSER(param))
997 return 0;
998
999 if (IS_TYPERANGE_AUTH_PARAM(param)) {
1000 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
1001 strcmp(value, SPKM2) && strcmp(value, SRP) &&
1002 strcmp(value, CHAP) && strcmp(value, NONE)) {
1003 pr_err("Illegal value for \"%s\", must be"
1004 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
1005 " or \"%s\".\n", param->name, KRB5,
1006 SPKM1, SPKM2, SRP, CHAP, NONE);
1007 return -1;
1008 }
1009 }
1010 if (IS_TYPERANGE_DIGEST_PARAM(param)) {
1011 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
1012 pr_err("Illegal value for \"%s\", must be"
1013 " \"%s\" or \"%s\".\n", param->name,
1014 CRC32C, NONE);
1015 return -1;
1016 }
1017 }
1018 if (IS_TYPERANGE_SESSIONTYPE(param)) {
1019 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
1020 pr_err("Illegal value for \"%s\", must be"
1021 " \"%s\" or \"%s\".\n", param->name,
1022 DISCOVERY, NORMAL);
1023 return -1;
1024 }
1025 }
1026
1027 return 0;
1028 }
1029
1030 /*
1031 * This function is used to pick a value range number, currently just
1032 * returns the lesser of both right values.
1033 */
1034 static char *iscsi_get_value_from_number_range(
1035 struct iscsi_param *param,
1036 char *value)
1037 {
1038 char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1039 u32 acceptor_right_value, proposer_right_value;
1040
1041 tilde_ptr1 = strchr(value, '~');
1042 if (!tilde_ptr1)
1043 return NULL;
1044 *tilde_ptr1++ = '\0';
1045 proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1046
1047 tilde_ptr2 = strchr(param->value, '~');
1048 if (!tilde_ptr2)
1049 return NULL;
1050 *tilde_ptr2++ = '\0';
1051 acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1052
1053 return (acceptor_right_value >= proposer_right_value) ?
1054 tilde_ptr1 : tilde_ptr2;
1055 }
1056
1057 static char *iscsi_check_valuelist_for_support(
1058 struct iscsi_param *param,
1059 char *value)
1060 {
1061 char *tmp1 = NULL, *tmp2 = NULL;
1062 char *acceptor_values = NULL, *proposer_values = NULL;
1063
1064 acceptor_values = param->value;
1065 proposer_values = value;
1066
1067 do {
1068 if (!proposer_values)
1069 return NULL;
1070 tmp1 = strchr(proposer_values, ',');
1071 if (tmp1)
1072 *tmp1 = '\0';
1073 acceptor_values = param->value;
1074 do {
1075 if (!acceptor_values) {
1076 if (tmp1)
1077 *tmp1 = ',';
1078 return NULL;
1079 }
1080 tmp2 = strchr(acceptor_values, ',');
1081 if (tmp2)
1082 *tmp2 = '\0';
1083 if (!strcmp(acceptor_values, proposer_values)) {
1084 if (tmp2)
1085 *tmp2 = ',';
1086 goto out;
1087 }
1088 if (tmp2)
1089 *tmp2++ = ',';
1090
1091 acceptor_values = tmp2;
1092 } while (acceptor_values);
1093 if (tmp1)
1094 *tmp1++ = ',';
1095 proposer_values = tmp1;
1096 } while (proposer_values);
1097
1098 out:
1099 return proposer_values;
1100 }
1101
1102 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value,
1103 struct iscsi_conn *conn)
1104 {
1105 u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1106 char *negoitated_value = NULL;
1107
1108 if (IS_PSTATE_ACCEPTOR(param)) {
1109 pr_err("Received key \"%s\" twice, protocol error.\n",
1110 param->name);
1111 return -1;
1112 }
1113
1114 if (IS_PSTATE_REJECT(param))
1115 return 0;
1116
1117 if (IS_TYPE_BOOL_AND(param)) {
1118 if (!strcmp(value, YES))
1119 proposer_boolean_value = 1;
1120 if (!strcmp(param->value, YES))
1121 acceptor_boolean_value = 1;
1122 if (acceptor_boolean_value && proposer_boolean_value)
1123 do {} while (0);
1124 else {
1125 if (iscsi_update_param_value(param, NO) < 0)
1126 return -1;
1127 if (!proposer_boolean_value)
1128 SET_PSTATE_REPLY_OPTIONAL(param);
1129 }
1130 } else if (IS_TYPE_BOOL_OR(param)) {
1131 if (!strcmp(value, YES))
1132 proposer_boolean_value = 1;
1133 if (!strcmp(param->value, YES))
1134 acceptor_boolean_value = 1;
1135 if (acceptor_boolean_value || proposer_boolean_value) {
1136 if (iscsi_update_param_value(param, YES) < 0)
1137 return -1;
1138 if (proposer_boolean_value)
1139 SET_PSTATE_REPLY_OPTIONAL(param);
1140 }
1141 } else if (IS_TYPE_NUMBER(param)) {
1142 char *tmpptr, buf[11];
1143 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1144 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1145
1146 memset(buf, 0, sizeof(buf));
1147
1148 if (!strcmp(param->name, MAXCONNECTIONS) ||
1149 !strcmp(param->name, MAXBURSTLENGTH) ||
1150 !strcmp(param->name, FIRSTBURSTLENGTH) ||
1151 !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1152 !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1153 !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1154 if (proposer_value > acceptor_value) {
1155 sprintf(buf, "%u", acceptor_value);
1156 if (iscsi_update_param_value(param,
1157 &buf[0]) < 0)
1158 return -1;
1159 } else {
1160 if (iscsi_update_param_value(param, value) < 0)
1161 return -1;
1162 }
1163 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1164 if (acceptor_value > proposer_value) {
1165 sprintf(buf, "%u", acceptor_value);
1166 if (iscsi_update_param_value(param,
1167 &buf[0]) < 0)
1168 return -1;
1169 } else {
1170 if (iscsi_update_param_value(param, value) < 0)
1171 return -1;
1172 }
1173 } else {
1174 if (iscsi_update_param_value(param, value) < 0)
1175 return -1;
1176 }
1177
1178 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1179 struct iscsi_param *param_mxdsl;
1180 unsigned long long tmp;
1181 int rc;
1182
1183 rc = kstrtoull(param->value, 0, &tmp);
1184 if (rc < 0)
1185 return -1;
1186
1187 conn->conn_ops->MaxRecvDataSegmentLength = tmp;
1188 pr_debug("Saving op->MaxRecvDataSegmentLength from"
1189 " original initiator received value: %u\n",
1190 conn->conn_ops->MaxRecvDataSegmentLength);
1191
1192 param_mxdsl = iscsi_find_param_from_key(
1193 MAXXMITDATASEGMENTLENGTH,
1194 conn->param_list);
1195 if (!param_mxdsl)
1196 return -1;
1197
1198 rc = iscsi_update_param_value(param,
1199 param_mxdsl->value);
1200 if (rc < 0)
1201 return -1;
1202
1203 pr_debug("Updated %s to target MXDSL value: %s\n",
1204 param->name, param->value);
1205 }
1206
1207 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1208 negoitated_value = iscsi_get_value_from_number_range(
1209 param, value);
1210 if (!negoitated_value)
1211 return -1;
1212 if (iscsi_update_param_value(param, negoitated_value) < 0)
1213 return -1;
1214 } else if (IS_TYPE_VALUE_LIST(param)) {
1215 negoitated_value = iscsi_check_valuelist_for_support(
1216 param, value);
1217 if (!negoitated_value) {
1218 pr_err("Proposer's value list \"%s\" contains"
1219 " no valid values from Acceptor's value list"
1220 " \"%s\".\n", value, param->value);
1221 return -1;
1222 }
1223 if (iscsi_update_param_value(param, negoitated_value) < 0)
1224 return -1;
1225 } else if (IS_PHASE_DECLARATIVE(param)) {
1226 if (iscsi_update_param_value(param, value) < 0)
1227 return -1;
1228 SET_PSTATE_REPLY_OPTIONAL(param);
1229 }
1230
1231 return 0;
1232 }
1233
1234 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1235 {
1236 if (IS_PSTATE_RESPONSE_GOT(param)) {
1237 pr_err("Received key \"%s\" twice, protocol error.\n",
1238 param->name);
1239 return -1;
1240 }
1241
1242 if (IS_TYPE_NUMBER_RANGE(param)) {
1243 u32 left_val = 0, right_val = 0, recieved_value = 0;
1244 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1245 char *tilde_ptr = NULL;
1246
1247 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1248 if (iscsi_update_param_value(param, value) < 0)
1249 return -1;
1250 return 0;
1251 }
1252
1253 tilde_ptr = strchr(value, '~');
1254 if (tilde_ptr) {
1255 pr_err("Illegal \"~\" in response for \"%s\".\n",
1256 param->name);
1257 return -1;
1258 }
1259 tilde_ptr = strchr(param->value, '~');
1260 if (!tilde_ptr) {
1261 pr_err("Unable to locate numerical range"
1262 " indicator \"~\" for \"%s\".\n", param->name);
1263 return -1;
1264 }
1265 *tilde_ptr = '\0';
1266
1267 left_val_ptr = param->value;
1268 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1269 left_val = simple_strtoul(left_val_ptr, NULL, 0);
1270 right_val = simple_strtoul(right_val_ptr, NULL, 0);
1271 recieved_value = simple_strtoul(value, NULL, 0);
1272
1273 *tilde_ptr = '~';
1274
1275 if ((recieved_value < left_val) ||
1276 (recieved_value > right_val)) {
1277 pr_err("Illegal response \"%s=%u\", value must"
1278 " be between %u and %u.\n", param->name,
1279 recieved_value, left_val, right_val);
1280 return -1;
1281 }
1282 } else if (IS_TYPE_VALUE_LIST(param)) {
1283 char *comma_ptr = NULL, *tmp_ptr = NULL;
1284
1285 comma_ptr = strchr(value, ',');
1286 if (comma_ptr) {
1287 pr_err("Illegal \",\" in response for \"%s\".\n",
1288 param->name);
1289 return -1;
1290 }
1291
1292 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1293 if (!tmp_ptr)
1294 return -1;
1295 }
1296
1297 if (iscsi_update_param_value(param, value) < 0)
1298 return -1;
1299
1300 return 0;
1301 }
1302
1303 static int iscsi_check_value(struct iscsi_param *param, char *value)
1304 {
1305 char *comma_ptr = NULL;
1306
1307 if (!strcmp(value, REJECT)) {
1308 if (!strcmp(param->name, IFMARKINT) ||
1309 !strcmp(param->name, OFMARKINT)) {
1310 /*
1311 * Reject is not fatal for [I,O]FMarkInt, and causes
1312 * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1313 */
1314 SET_PSTATE_REJECT(param);
1315 return 0;
1316 }
1317 pr_err("Received %s=%s\n", param->name, value);
1318 return -1;
1319 }
1320 if (!strcmp(value, IRRELEVANT)) {
1321 pr_debug("Received %s=%s\n", param->name, value);
1322 SET_PSTATE_IRRELEVANT(param);
1323 return 0;
1324 }
1325 if (!strcmp(value, NOTUNDERSTOOD)) {
1326 if (!IS_PSTATE_PROPOSER(param)) {
1327 pr_err("Received illegal offer %s=%s\n",
1328 param->name, value);
1329 return -1;
1330 }
1331
1332 /* #warning FIXME: Add check for X-ExtensionKey here */
1333 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1334 " with \"%s\", protocol error.\n", param->name, value);
1335 return -1;
1336 }
1337
1338 do {
1339 comma_ptr = NULL;
1340 comma_ptr = strchr(value, ',');
1341
1342 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1343 pr_err("Detected value separator \",\", but"
1344 " key \"%s\" does not allow a value list,"
1345 " protocol error.\n", param->name);
1346 return -1;
1347 }
1348 if (comma_ptr)
1349 *comma_ptr = '\0';
1350
1351 if (strlen(value) > VALUE_MAXLEN) {
1352 pr_err("Value for key \"%s\" exceeds %d,"
1353 " protocol error.\n", param->name,
1354 VALUE_MAXLEN);
1355 return -1;
1356 }
1357
1358 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1359 if (iscsi_check_boolean_value(param, value) < 0)
1360 return -1;
1361 } else if (IS_TYPE_NUMBER(param)) {
1362 if (iscsi_check_numerical_value(param, value) < 0)
1363 return -1;
1364 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1365 if (iscsi_check_numerical_range_value(param, value) < 0)
1366 return -1;
1367 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1368 if (iscsi_check_string_or_list_value(param, value) < 0)
1369 return -1;
1370 } else {
1371 pr_err("Huh? 0x%02x\n", param->type);
1372 return -1;
1373 }
1374
1375 if (comma_ptr)
1376 *comma_ptr++ = ',';
1377
1378 value = comma_ptr;
1379 } while (value);
1380
1381 return 0;
1382 }
1383
1384 static struct iscsi_param *__iscsi_check_key(
1385 char *key,
1386 int sender,
1387 struct iscsi_param_list *param_list)
1388 {
1389 struct iscsi_param *param;
1390
1391 if (strlen(key) > KEY_MAXLEN) {
1392 pr_err("Length of key name \"%s\" exceeds %d.\n",
1393 key, KEY_MAXLEN);
1394 return NULL;
1395 }
1396
1397 param = iscsi_find_param_from_key(key, param_list);
1398 if (!param)
1399 return NULL;
1400
1401 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1402 pr_err("Key \"%s\" may not be sent to %s,"
1403 " protocol error.\n", param->name,
1404 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1405 return NULL;
1406 }
1407
1408 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1409 pr_err("Key \"%s\" may not be sent to %s,"
1410 " protocol error.\n", param->name,
1411 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1412 return NULL;
1413 }
1414
1415 return param;
1416 }
1417
1418 static struct iscsi_param *iscsi_check_key(
1419 char *key,
1420 int phase,
1421 int sender,
1422 struct iscsi_param_list *param_list)
1423 {
1424 struct iscsi_param *param;
1425 /*
1426 * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1427 */
1428 if (strlen(key) > KEY_MAXLEN) {
1429 pr_err("Length of key name \"%s\" exceeds %d.\n",
1430 key, KEY_MAXLEN);
1431 return NULL;
1432 }
1433
1434 param = iscsi_find_param_from_key(key, param_list);
1435 if (!param)
1436 return NULL;
1437
1438 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1439 pr_err("Key \"%s\" may not be sent to %s,"
1440 " protocol error.\n", param->name,
1441 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1442 return NULL;
1443 }
1444 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1445 pr_err("Key \"%s\" may not be sent to %s,"
1446 " protocol error.\n", param->name,
1447 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1448 return NULL;
1449 }
1450
1451 if (IS_PSTATE_ACCEPTOR(param)) {
1452 pr_err("Key \"%s\" received twice, protocol error.\n",
1453 key);
1454 return NULL;
1455 }
1456
1457 if (!phase)
1458 return param;
1459
1460 if (!(param->phase & phase)) {
1461 pr_err("Key \"%s\" may not be negotiated during ",
1462 param->name);
1463 switch (phase) {
1464 case PHASE_SECURITY:
1465 pr_debug("Security phase.\n");
1466 break;
1467 case PHASE_OPERATIONAL:
1468 pr_debug("Operational phase.\n");
1469 break;
1470 default:
1471 pr_debug("Unknown phase.\n");
1472 }
1473 return NULL;
1474 }
1475
1476 return param;
1477 }
1478
1479 static int iscsi_enforce_integrity_rules(
1480 u8 phase,
1481 struct iscsi_param_list *param_list)
1482 {
1483 char *tmpptr;
1484 u8 DataSequenceInOrder = 0;
1485 u8 ErrorRecoveryLevel = 0, SessionType = 0;
1486 u8 IFMarker = 0, OFMarker = 0;
1487 u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
1488 u32 FirstBurstLength = 0, MaxBurstLength = 0;
1489 struct iscsi_param *param = NULL;
1490
1491 list_for_each_entry(param, &param_list->param_list, p_list) {
1492 if (!(param->phase & phase))
1493 continue;
1494 if (!strcmp(param->name, SESSIONTYPE))
1495 if (!strcmp(param->value, NORMAL))
1496 SessionType = 1;
1497 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1498 ErrorRecoveryLevel = simple_strtoul(param->value,
1499 &tmpptr, 0);
1500 if (!strcmp(param->name, DATASEQUENCEINORDER))
1501 if (!strcmp(param->value, YES))
1502 DataSequenceInOrder = 1;
1503 if (!strcmp(param->name, MAXBURSTLENGTH))
1504 MaxBurstLength = simple_strtoul(param->value,
1505 &tmpptr, 0);
1506 if (!strcmp(param->name, IFMARKER))
1507 if (!strcmp(param->value, YES))
1508 IFMarker = 1;
1509 if (!strcmp(param->name, OFMARKER))
1510 if (!strcmp(param->value, YES))
1511 OFMarker = 1;
1512 if (!strcmp(param->name, IFMARKINT))
1513 if (!strcmp(param->value, REJECT))
1514 IFMarkInt_Reject = 1;
1515 if (!strcmp(param->name, OFMARKINT))
1516 if (!strcmp(param->value, REJECT))
1517 OFMarkInt_Reject = 1;
1518 }
1519
1520 list_for_each_entry(param, &param_list->param_list, p_list) {
1521 if (!(param->phase & phase))
1522 continue;
1523 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1524 (strcmp(param->name, IFMARKER) &&
1525 strcmp(param->name, OFMARKER) &&
1526 strcmp(param->name, IFMARKINT) &&
1527 strcmp(param->name, OFMARKINT))))
1528 continue;
1529 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1530 DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1531 if (strcmp(param->value, "1")) {
1532 if (iscsi_update_param_value(param, "1") < 0)
1533 return -1;
1534 pr_debug("Reset \"%s\" to \"%s\".\n",
1535 param->name, param->value);
1536 }
1537 }
1538 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1539 if (strcmp(param->value, "1")) {
1540 if (iscsi_update_param_value(param, "1") < 0)
1541 return -1;
1542 pr_debug("Reset \"%s\" to \"%s\".\n",
1543 param->name, param->value);
1544 }
1545 }
1546 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1547 FirstBurstLength = simple_strtoul(param->value,
1548 &tmpptr, 0);
1549 if (FirstBurstLength > MaxBurstLength) {
1550 char tmpbuf[11];
1551 memset(tmpbuf, 0, sizeof(tmpbuf));
1552 sprintf(tmpbuf, "%u", MaxBurstLength);
1553 if (iscsi_update_param_value(param, tmpbuf))
1554 return -1;
1555 pr_debug("Reset \"%s\" to \"%s\".\n",
1556 param->name, param->value);
1557 }
1558 }
1559 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1560 if (iscsi_update_param_value(param, NO) < 0)
1561 return -1;
1562 IFMarker = 0;
1563 pr_debug("Reset \"%s\" to \"%s\".\n",
1564 param->name, param->value);
1565 }
1566 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1567 if (iscsi_update_param_value(param, NO) < 0)
1568 return -1;
1569 OFMarker = 0;
1570 pr_debug("Reset \"%s\" to \"%s\".\n",
1571 param->name, param->value);
1572 }
1573 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1574 if (!strcmp(param->value, REJECT))
1575 continue;
1576 param->state &= ~PSTATE_NEGOTIATE;
1577 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1578 return -1;
1579 pr_debug("Reset \"%s\" to \"%s\".\n",
1580 param->name, param->value);
1581 }
1582 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1583 if (!strcmp(param->value, REJECT))
1584 continue;
1585 param->state &= ~PSTATE_NEGOTIATE;
1586 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1587 return -1;
1588 pr_debug("Reset \"%s\" to \"%s\".\n",
1589 param->name, param->value);
1590 }
1591 }
1592
1593 return 0;
1594 }
1595
1596 int iscsi_decode_text_input(
1597 u8 phase,
1598 u8 sender,
1599 char *textbuf,
1600 u32 length,
1601 struct iscsi_conn *conn)
1602 {
1603 struct iscsi_param_list *param_list = conn->param_list;
1604 char *tmpbuf, *start = NULL, *end = NULL;
1605
1606 tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1607 if (!tmpbuf) {
1608 pr_err("Unable to allocate %u + 1 bytes for tmpbuf.\n", length);
1609 return -1;
1610 }
1611
1612 memcpy(tmpbuf, textbuf, length);
1613 tmpbuf[length] = '\0';
1614 start = tmpbuf;
1615 end = (start + length);
1616
1617 while (start < end) {
1618 char *key, *value;
1619 struct iscsi_param *param;
1620
1621 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1622 kfree(tmpbuf);
1623 return -1;
1624 }
1625
1626 pr_debug("Got key: %s=%s\n", key, value);
1627
1628 if (phase & PHASE_SECURITY) {
1629 if (iscsi_check_for_auth_key(key) > 0) {
1630 kfree(tmpbuf);
1631 return 1;
1632 }
1633 }
1634
1635 param = iscsi_check_key(key, phase, sender, param_list);
1636 if (!param) {
1637 if (iscsi_add_notunderstood_response(key,
1638 value, param_list) < 0) {
1639 kfree(tmpbuf);
1640 return -1;
1641 }
1642 start += strlen(key) + strlen(value) + 2;
1643 continue;
1644 }
1645 if (iscsi_check_value(param, value) < 0) {
1646 kfree(tmpbuf);
1647 return -1;
1648 }
1649
1650 start += strlen(key) + strlen(value) + 2;
1651
1652 if (IS_PSTATE_PROPOSER(param)) {
1653 if (iscsi_check_proposer_state(param, value) < 0) {
1654 kfree(tmpbuf);
1655 return -1;
1656 }
1657 SET_PSTATE_RESPONSE_GOT(param);
1658 } else {
1659 if (iscsi_check_acceptor_state(param, value, conn) < 0) {
1660 kfree(tmpbuf);
1661 return -1;
1662 }
1663 SET_PSTATE_ACCEPTOR(param);
1664 }
1665 }
1666
1667 kfree(tmpbuf);
1668 return 0;
1669 }
1670
1671 int iscsi_encode_text_output(
1672 u8 phase,
1673 u8 sender,
1674 char *textbuf,
1675 u32 *length,
1676 struct iscsi_param_list *param_list)
1677 {
1678 char *output_buf = NULL;
1679 struct iscsi_extra_response *er;
1680 struct iscsi_param *param;
1681
1682 output_buf = textbuf + *length;
1683
1684 if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1685 return -1;
1686
1687 list_for_each_entry(param, &param_list->param_list, p_list) {
1688 if (!(param->sender & sender))
1689 continue;
1690 if (IS_PSTATE_ACCEPTOR(param) &&
1691 !IS_PSTATE_RESPONSE_SENT(param) &&
1692 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1693 (param->phase & phase)) {
1694 *length += sprintf(output_buf, "%s=%s",
1695 param->name, param->value);
1696 *length += 1;
1697 output_buf = textbuf + *length;
1698 SET_PSTATE_RESPONSE_SENT(param);
1699 pr_debug("Sending key: %s=%s\n",
1700 param->name, param->value);
1701 continue;
1702 }
1703 if (IS_PSTATE_NEGOTIATE(param) &&
1704 !IS_PSTATE_ACCEPTOR(param) &&
1705 !IS_PSTATE_PROPOSER(param) &&
1706 (param->phase & phase)) {
1707 *length += sprintf(output_buf, "%s=%s",
1708 param->name, param->value);
1709 *length += 1;
1710 output_buf = textbuf + *length;
1711 SET_PSTATE_PROPOSER(param);
1712 iscsi_check_proposer_for_optional_reply(param);
1713 pr_debug("Sending key: %s=%s\n",
1714 param->name, param->value);
1715 }
1716 }
1717
1718 list_for_each_entry(er, &param_list->extra_response_list, er_list) {
1719 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1720 *length += 1;
1721 output_buf = textbuf + *length;
1722 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1723 }
1724 iscsi_release_extra_responses(param_list);
1725
1726 return 0;
1727 }
1728
1729 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1730 {
1731 int ret = 0;
1732 struct iscsi_param *param;
1733
1734 list_for_each_entry(param, &param_list->param_list, p_list) {
1735 if (IS_PSTATE_NEGOTIATE(param) &&
1736 IS_PSTATE_PROPOSER(param) &&
1737 !IS_PSTATE_RESPONSE_GOT(param) &&
1738 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1739 !IS_PHASE_DECLARATIVE(param)) {
1740 pr_err("No response for proposed key \"%s\".\n",
1741 param->name);
1742 ret = -1;
1743 }
1744 }
1745
1746 return ret;
1747 }
1748
1749 int iscsi_change_param_value(
1750 char *keyvalue,
1751 struct iscsi_param_list *param_list,
1752 int check_key)
1753 {
1754 char *key = NULL, *value = NULL;
1755 struct iscsi_param *param;
1756 int sender = 0;
1757
1758 if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1759 return -1;
1760
1761 if (!check_key) {
1762 param = __iscsi_check_key(keyvalue, sender, param_list);
1763 if (!param)
1764 return -1;
1765 } else {
1766 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1767 if (!param)
1768 return -1;
1769
1770 param->set_param = 1;
1771 if (iscsi_check_value(param, value) < 0) {
1772 param->set_param = 0;
1773 return -1;
1774 }
1775 param->set_param = 0;
1776 }
1777
1778 if (iscsi_update_param_value(param, value) < 0)
1779 return -1;
1780
1781 return 0;
1782 }
1783
1784 void iscsi_set_connection_parameters(
1785 struct iscsi_conn_ops *ops,
1786 struct iscsi_param_list *param_list)
1787 {
1788 char *tmpptr;
1789 struct iscsi_param *param;
1790
1791 pr_debug("---------------------------------------------------"
1792 "---------------\n");
1793 list_for_each_entry(param, &param_list->param_list, p_list) {
1794 /*
1795 * Special case to set MAXXMITDATASEGMENTLENGTH from the
1796 * target requested MaxRecvDataSegmentLength, even though
1797 * this key is not sent over the wire.
1798 */
1799 if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
1800 ops->MaxXmitDataSegmentLength =
1801 simple_strtoul(param->value, &tmpptr, 0);
1802 pr_debug("MaxXmitDataSegmentLength: %s\n",
1803 param->value);
1804 }
1805
1806 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1807 continue;
1808 if (!strcmp(param->name, AUTHMETHOD)) {
1809 pr_debug("AuthMethod: %s\n",
1810 param->value);
1811 } else if (!strcmp(param->name, HEADERDIGEST)) {
1812 ops->HeaderDigest = !strcmp(param->value, CRC32C);
1813 pr_debug("HeaderDigest: %s\n",
1814 param->value);
1815 } else if (!strcmp(param->name, DATADIGEST)) {
1816 ops->DataDigest = !strcmp(param->value, CRC32C);
1817 pr_debug("DataDigest: %s\n",
1818 param->value);
1819 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1820 /*
1821 * At this point iscsi_check_acceptor_state() will have
1822 * set ops->MaxRecvDataSegmentLength from the original
1823 * initiator provided value.
1824 */
1825 pr_debug("MaxRecvDataSegmentLength: %u\n",
1826 ops->MaxRecvDataSegmentLength);
1827 } else if (!strcmp(param->name, OFMARKER)) {
1828 ops->OFMarker = !strcmp(param->value, YES);
1829 pr_debug("OFMarker: %s\n",
1830 param->value);
1831 } else if (!strcmp(param->name, IFMARKER)) {
1832 ops->IFMarker = !strcmp(param->value, YES);
1833 pr_debug("IFMarker: %s\n",
1834 param->value);
1835 } else if (!strcmp(param->name, OFMARKINT)) {
1836 ops->OFMarkInt =
1837 simple_strtoul(param->value, &tmpptr, 0);
1838 pr_debug("OFMarkInt: %s\n",
1839 param->value);
1840 } else if (!strcmp(param->name, IFMARKINT)) {
1841 ops->IFMarkInt =
1842 simple_strtoul(param->value, &tmpptr, 0);
1843 pr_debug("IFMarkInt: %s\n",
1844 param->value);
1845 } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
1846 ops->InitiatorRecvDataSegmentLength =
1847 simple_strtoul(param->value, &tmpptr, 0);
1848 pr_debug("InitiatorRecvDataSegmentLength: %s\n",
1849 param->value);
1850 ops->MaxRecvDataSegmentLength =
1851 ops->InitiatorRecvDataSegmentLength;
1852 pr_debug("Set MRDSL from InitiatorRecvDataSegmentLength\n");
1853 } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
1854 ops->TargetRecvDataSegmentLength =
1855 simple_strtoul(param->value, &tmpptr, 0);
1856 pr_debug("TargetRecvDataSegmentLength: %s\n",
1857 param->value);
1858 ops->MaxXmitDataSegmentLength =
1859 ops->TargetRecvDataSegmentLength;
1860 pr_debug("Set MXDSL from TargetRecvDataSegmentLength\n");
1861 }
1862 }
1863 pr_debug("----------------------------------------------------"
1864 "--------------\n");
1865 }
1866
1867 void iscsi_set_session_parameters(
1868 struct iscsi_sess_ops *ops,
1869 struct iscsi_param_list *param_list,
1870 int leading)
1871 {
1872 char *tmpptr;
1873 struct iscsi_param *param;
1874
1875 pr_debug("----------------------------------------------------"
1876 "--------------\n");
1877 list_for_each_entry(param, &param_list->param_list, p_list) {
1878 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1879 continue;
1880 if (!strcmp(param->name, INITIATORNAME)) {
1881 if (!param->value)
1882 continue;
1883 if (leading)
1884 snprintf(ops->InitiatorName,
1885 sizeof(ops->InitiatorName),
1886 "%s", param->value);
1887 pr_debug("InitiatorName: %s\n",
1888 param->value);
1889 } else if (!strcmp(param->name, INITIATORALIAS)) {
1890 if (!param->value)
1891 continue;
1892 snprintf(ops->InitiatorAlias,
1893 sizeof(ops->InitiatorAlias),
1894 "%s", param->value);
1895 pr_debug("InitiatorAlias: %s\n",
1896 param->value);
1897 } else if (!strcmp(param->name, TARGETNAME)) {
1898 if (!param->value)
1899 continue;
1900 if (leading)
1901 snprintf(ops->TargetName,
1902 sizeof(ops->TargetName),
1903 "%s", param->value);
1904 pr_debug("TargetName: %s\n",
1905 param->value);
1906 } else if (!strcmp(param->name, TARGETALIAS)) {
1907 if (!param->value)
1908 continue;
1909 snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1910 "%s", param->value);
1911 pr_debug("TargetAlias: %s\n",
1912 param->value);
1913 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1914 ops->TargetPortalGroupTag =
1915 simple_strtoul(param->value, &tmpptr, 0);
1916 pr_debug("TargetPortalGroupTag: %s\n",
1917 param->value);
1918 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1919 ops->MaxConnections =
1920 simple_strtoul(param->value, &tmpptr, 0);
1921 pr_debug("MaxConnections: %s\n",
1922 param->value);
1923 } else if (!strcmp(param->name, INITIALR2T)) {
1924 ops->InitialR2T = !strcmp(param->value, YES);
1925 pr_debug("InitialR2T: %s\n",
1926 param->value);
1927 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1928 ops->ImmediateData = !strcmp(param->value, YES);
1929 pr_debug("ImmediateData: %s\n",
1930 param->value);
1931 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1932 ops->MaxBurstLength =
1933 simple_strtoul(param->value, &tmpptr, 0);
1934 pr_debug("MaxBurstLength: %s\n",
1935 param->value);
1936 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1937 ops->FirstBurstLength =
1938 simple_strtoul(param->value, &tmpptr, 0);
1939 pr_debug("FirstBurstLength: %s\n",
1940 param->value);
1941 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1942 ops->DefaultTime2Wait =
1943 simple_strtoul(param->value, &tmpptr, 0);
1944 pr_debug("DefaultTime2Wait: %s\n",
1945 param->value);
1946 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1947 ops->DefaultTime2Retain =
1948 simple_strtoul(param->value, &tmpptr, 0);
1949 pr_debug("DefaultTime2Retain: %s\n",
1950 param->value);
1951 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1952 ops->MaxOutstandingR2T =
1953 simple_strtoul(param->value, &tmpptr, 0);
1954 pr_debug("MaxOutstandingR2T: %s\n",
1955 param->value);
1956 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1957 ops->DataPDUInOrder = !strcmp(param->value, YES);
1958 pr_debug("DataPDUInOrder: %s\n",
1959 param->value);
1960 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1961 ops->DataSequenceInOrder = !strcmp(param->value, YES);
1962 pr_debug("DataSequenceInOrder: %s\n",
1963 param->value);
1964 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1965 ops->ErrorRecoveryLevel =
1966 simple_strtoul(param->value, &tmpptr, 0);
1967 pr_debug("ErrorRecoveryLevel: %s\n",
1968 param->value);
1969 } else if (!strcmp(param->name, SESSIONTYPE)) {
1970 ops->SessionType = !strcmp(param->value, DISCOVERY);
1971 pr_debug("SessionType: %s\n",
1972 param->value);
1973 } else if (!strcmp(param->name, RDMAEXTENSIONS)) {
1974 ops->RDMAExtensions = !strcmp(param->value, YES);
1975 pr_debug("RDMAExtensions: %s\n",
1976 param->value);
1977 }
1978 }
1979 pr_debug("----------------------------------------------------"
1980 "--------------\n");
1981
1982 }
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