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 "iscsi_target_core.h"
22 #include "iscsi_target_util.h"
23 #include "iscsi_target_parameters.h"
24
iscsi_login_rx_data(struct iscsi_conn * conn,char * buf,int length)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
iscsi_login_tx_data(struct iscsi_conn * conn,char * pdu_buf,char * text_buf,int text_length)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
iscsi_dump_conn_ops(struct iscsi_conn_ops * conn_ops)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
iscsi_dump_sess_ops(struct iscsi_sess_ops * sess_ops)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
iscsi_print_params(struct iscsi_param_list * param_list)138 void iscsi_print_params(struct iscsi_param_list *param_list)
139 {
140 struct iscsi_param *param;
141
142 list_for_each_entry(param, ¶m_list->param_list, p_list)
143 pr_debug("%s: %s\n", param->name, param->value);
144 }
145
iscsi_set_default_param(struct iscsi_param_list * param_list,char * name,char * value,u8 phase,u8 scope,u8 sender,u16 type_range,u8 use)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(¶m->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(¶m->p_list, ¶m_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 */
iscsi_create_default_params(struct iscsi_param_list ** param_list_ptr)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
iscsi_set_keys_to_negotiate(struct iscsi_param_list * param_list,bool iser)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, ¶m_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
iscsi_set_keys_irrelevant_for_discovery(struct iscsi_param_list * param_list)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, ¶m_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
iscsi_copy_param_list(struct iscsi_param_list ** dst_param_list,struct iscsi_param_list * src_param_list,int leading)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(¶m_list->param_list);
607 INIT_LIST_HEAD(¶m_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, ¶m_list->param_list);
642 }
643
644 if (!list_empty(¶m_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
iscsi_release_extra_responses(struct iscsi_param_list * param_list)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, ¶m_list->extra_response_list,
663 er_list) {
664 list_del(&er->er_list);
665 kfree(er);
666 }
667 }
668
iscsi_release_param_list(struct iscsi_param_list * param_list)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, ¶m_list->param_list,
674 p_list) {
675 list_del(¶m->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
iscsi_find_param_from_key(char * key,struct iscsi_param_list * param_list)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, ¶m_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
iscsi_extract_key_value(char * textbuf,char ** key,char ** value)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
iscsi_update_param_value(struct iscsi_param * param,char * value)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
iscsi_add_notunderstood_response(char * key,char * value,struct iscsi_param_list * param_list)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 ¶m_list->extra_response_list);
765 return 0;
766 }
767
iscsi_check_for_auth_key(char * key)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
iscsi_check_proposer_for_optional_reply(struct iscsi_param * param)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 * Required for gPXE iSCSI boot client
808 */
809 if (!strcmp(param->name, MAXCONNECTIONS))
810 SET_PSTATE_REPLY_OPTIONAL(param);
811 } else if (IS_PHASE_DECLARATIVE(param))
812 SET_PSTATE_REPLY_OPTIONAL(param);
813 }
814
iscsi_check_boolean_value(struct iscsi_param * param,char * value)815 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
816 {
817 if (strcmp(value, YES) && strcmp(value, NO)) {
818 pr_err("Illegal value for \"%s\", must be either"
819 " \"%s\" or \"%s\".\n", param->name, YES, NO);
820 return -1;
821 }
822
823 return 0;
824 }
825
iscsi_check_numerical_value(struct iscsi_param * param,char * value_ptr)826 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
827 {
828 char *tmpptr;
829 int value = 0;
830
831 value = simple_strtoul(value_ptr, &tmpptr, 0);
832
833 if (IS_TYPERANGE_0_TO_2(param)) {
834 if ((value < 0) || (value > 2)) {
835 pr_err("Illegal value for \"%s\", must be"
836 " between 0 and 2.\n", param->name);
837 return -1;
838 }
839 return 0;
840 }
841 if (IS_TYPERANGE_0_TO_3600(param)) {
842 if ((value < 0) || (value > 3600)) {
843 pr_err("Illegal value for \"%s\", must be"
844 " between 0 and 3600.\n", param->name);
845 return -1;
846 }
847 return 0;
848 }
849 if (IS_TYPERANGE_0_TO_32767(param)) {
850 if ((value < 0) || (value > 32767)) {
851 pr_err("Illegal value for \"%s\", must be"
852 " between 0 and 32767.\n", param->name);
853 return -1;
854 }
855 return 0;
856 }
857 if (IS_TYPERANGE_0_TO_65535(param)) {
858 if ((value < 0) || (value > 65535)) {
859 pr_err("Illegal value for \"%s\", must be"
860 " between 0 and 65535.\n", param->name);
861 return -1;
862 }
863 return 0;
864 }
865 if (IS_TYPERANGE_1_TO_65535(param)) {
866 if ((value < 1) || (value > 65535)) {
867 pr_err("Illegal value for \"%s\", must be"
868 " between 1 and 65535.\n", param->name);
869 return -1;
870 }
871 return 0;
872 }
873 if (IS_TYPERANGE_2_TO_3600(param)) {
874 if ((value < 2) || (value > 3600)) {
875 pr_err("Illegal value for \"%s\", must be"
876 " between 2 and 3600.\n", param->name);
877 return -1;
878 }
879 return 0;
880 }
881 if (IS_TYPERANGE_512_TO_16777215(param)) {
882 if ((value < 512) || (value > 16777215)) {
883 pr_err("Illegal value for \"%s\", must be"
884 " between 512 and 16777215.\n", param->name);
885 return -1;
886 }
887 return 0;
888 }
889
890 return 0;
891 }
892
iscsi_check_numerical_range_value(struct iscsi_param * param,char * value)893 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
894 {
895 char *left_val_ptr = NULL, *right_val_ptr = NULL;
896 char *tilde_ptr = NULL;
897 u32 left_val, right_val, local_left_val;
898
899 if (strcmp(param->name, IFMARKINT) &&
900 strcmp(param->name, OFMARKINT)) {
901 pr_err("Only parameters \"%s\" or \"%s\" may contain a"
902 " numerical range value.\n", IFMARKINT, OFMARKINT);
903 return -1;
904 }
905
906 if (IS_PSTATE_PROPOSER(param))
907 return 0;
908
909 tilde_ptr = strchr(value, '~');
910 if (!tilde_ptr) {
911 pr_err("Unable to locate numerical range indicator"
912 " \"~\" for \"%s\".\n", param->name);
913 return -1;
914 }
915 *tilde_ptr = '\0';
916
917 left_val_ptr = value;
918 right_val_ptr = value + strlen(left_val_ptr) + 1;
919
920 if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
921 return -1;
922 if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
923 return -1;
924
925 left_val = simple_strtoul(left_val_ptr, NULL, 0);
926 right_val = simple_strtoul(right_val_ptr, NULL, 0);
927 *tilde_ptr = '~';
928
929 if (right_val < left_val) {
930 pr_err("Numerical range for parameter \"%s\" contains"
931 " a right value which is less than the left.\n",
932 param->name);
933 return -1;
934 }
935
936 /*
937 * For now, enforce reasonable defaults for [I,O]FMarkInt.
938 */
939 tilde_ptr = strchr(param->value, '~');
940 if (!tilde_ptr) {
941 pr_err("Unable to locate numerical range indicator"
942 " \"~\" for \"%s\".\n", param->name);
943 return -1;
944 }
945 *tilde_ptr = '\0';
946
947 left_val_ptr = param->value;
948 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
949
950 local_left_val = simple_strtoul(left_val_ptr, NULL, 0);
951 *tilde_ptr = '~';
952
953 if (param->set_param) {
954 if ((left_val < local_left_val) ||
955 (right_val < local_left_val)) {
956 pr_err("Passed value range \"%u~%u\" is below"
957 " minimum left value \"%u\" for key \"%s\","
958 " rejecting.\n", left_val, right_val,
959 local_left_val, param->name);
960 return -1;
961 }
962 } else {
963 if ((left_val < local_left_val) &&
964 (right_val < local_left_val)) {
965 pr_err("Received value range \"%u~%u\" is"
966 " below minimum left value \"%u\" for key"
967 " \"%s\", rejecting.\n", left_val, right_val,
968 local_left_val, param->name);
969 SET_PSTATE_REJECT(param);
970 if (iscsi_update_param_value(param, REJECT) < 0)
971 return -1;
972 }
973 }
974
975 return 0;
976 }
977
iscsi_check_string_or_list_value(struct iscsi_param * param,char * value)978 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
979 {
980 if (IS_PSTATE_PROPOSER(param))
981 return 0;
982
983 if (IS_TYPERANGE_AUTH_PARAM(param)) {
984 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
985 strcmp(value, SPKM2) && strcmp(value, SRP) &&
986 strcmp(value, CHAP) && strcmp(value, NONE)) {
987 pr_err("Illegal value for \"%s\", must be"
988 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
989 " or \"%s\".\n", param->name, KRB5,
990 SPKM1, SPKM2, SRP, CHAP, NONE);
991 return -1;
992 }
993 }
994 if (IS_TYPERANGE_DIGEST_PARAM(param)) {
995 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
996 pr_err("Illegal value for \"%s\", must be"
997 " \"%s\" or \"%s\".\n", param->name,
998 CRC32C, NONE);
999 return -1;
1000 }
1001 }
1002 if (IS_TYPERANGE_SESSIONTYPE(param)) {
1003 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
1004 pr_err("Illegal value for \"%s\", must be"
1005 " \"%s\" or \"%s\".\n", param->name,
1006 DISCOVERY, NORMAL);
1007 return -1;
1008 }
1009 }
1010
1011 return 0;
1012 }
1013
1014 /*
1015 * This function is used to pick a value range number, currently just
1016 * returns the lesser of both right values.
1017 */
iscsi_get_value_from_number_range(struct iscsi_param * param,char * value)1018 static char *iscsi_get_value_from_number_range(
1019 struct iscsi_param *param,
1020 char *value)
1021 {
1022 char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1023 u32 acceptor_right_value, proposer_right_value;
1024
1025 tilde_ptr1 = strchr(value, '~');
1026 if (!tilde_ptr1)
1027 return NULL;
1028 *tilde_ptr1++ = '\0';
1029 proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1030
1031 tilde_ptr2 = strchr(param->value, '~');
1032 if (!tilde_ptr2)
1033 return NULL;
1034 *tilde_ptr2++ = '\0';
1035 acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1036
1037 return (acceptor_right_value >= proposer_right_value) ?
1038 tilde_ptr1 : tilde_ptr2;
1039 }
1040
iscsi_check_valuelist_for_support(struct iscsi_param * param,char * value)1041 static char *iscsi_check_valuelist_for_support(
1042 struct iscsi_param *param,
1043 char *value)
1044 {
1045 char *tmp1 = NULL, *tmp2 = NULL;
1046 char *acceptor_values = NULL, *proposer_values = NULL;
1047
1048 acceptor_values = param->value;
1049 proposer_values = value;
1050
1051 do {
1052 if (!proposer_values)
1053 return NULL;
1054 tmp1 = strchr(proposer_values, ',');
1055 if (tmp1)
1056 *tmp1 = '\0';
1057 acceptor_values = param->value;
1058 do {
1059 if (!acceptor_values) {
1060 if (tmp1)
1061 *tmp1 = ',';
1062 return NULL;
1063 }
1064 tmp2 = strchr(acceptor_values, ',');
1065 if (tmp2)
1066 *tmp2 = '\0';
1067 if (!strcmp(acceptor_values, proposer_values)) {
1068 if (tmp2)
1069 *tmp2 = ',';
1070 goto out;
1071 }
1072 if (tmp2)
1073 *tmp2++ = ',';
1074
1075 acceptor_values = tmp2;
1076 } while (acceptor_values);
1077 if (tmp1)
1078 *tmp1++ = ',';
1079 proposer_values = tmp1;
1080 } while (proposer_values);
1081
1082 out:
1083 return proposer_values;
1084 }
1085
iscsi_check_acceptor_state(struct iscsi_param * param,char * value,struct iscsi_conn * conn)1086 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value,
1087 struct iscsi_conn *conn)
1088 {
1089 u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1090 char *negoitated_value = NULL;
1091
1092 if (IS_PSTATE_ACCEPTOR(param)) {
1093 pr_err("Received key \"%s\" twice, protocol error.\n",
1094 param->name);
1095 return -1;
1096 }
1097
1098 if (IS_PSTATE_REJECT(param))
1099 return 0;
1100
1101 if (IS_TYPE_BOOL_AND(param)) {
1102 if (!strcmp(value, YES))
1103 proposer_boolean_value = 1;
1104 if (!strcmp(param->value, YES))
1105 acceptor_boolean_value = 1;
1106 if (acceptor_boolean_value && proposer_boolean_value)
1107 do {} while (0);
1108 else {
1109 if (iscsi_update_param_value(param, NO) < 0)
1110 return -1;
1111 if (!proposer_boolean_value)
1112 SET_PSTATE_REPLY_OPTIONAL(param);
1113 }
1114 } else if (IS_TYPE_BOOL_OR(param)) {
1115 if (!strcmp(value, YES))
1116 proposer_boolean_value = 1;
1117 if (!strcmp(param->value, YES))
1118 acceptor_boolean_value = 1;
1119 if (acceptor_boolean_value || proposer_boolean_value) {
1120 if (iscsi_update_param_value(param, YES) < 0)
1121 return -1;
1122 if (proposer_boolean_value)
1123 SET_PSTATE_REPLY_OPTIONAL(param);
1124 }
1125 } else if (IS_TYPE_NUMBER(param)) {
1126 char *tmpptr, buf[11];
1127 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1128 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1129
1130 memset(buf, 0, sizeof(buf));
1131
1132 if (!strcmp(param->name, MAXCONNECTIONS) ||
1133 !strcmp(param->name, MAXBURSTLENGTH) ||
1134 !strcmp(param->name, FIRSTBURSTLENGTH) ||
1135 !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1136 !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1137 !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1138 if (proposer_value > acceptor_value) {
1139 sprintf(buf, "%u", acceptor_value);
1140 if (iscsi_update_param_value(param,
1141 &buf[0]) < 0)
1142 return -1;
1143 } else {
1144 if (iscsi_update_param_value(param, value) < 0)
1145 return -1;
1146 }
1147 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1148 if (acceptor_value > proposer_value) {
1149 sprintf(buf, "%u", acceptor_value);
1150 if (iscsi_update_param_value(param,
1151 &buf[0]) < 0)
1152 return -1;
1153 } else {
1154 if (iscsi_update_param_value(param, value) < 0)
1155 return -1;
1156 }
1157 } else {
1158 if (iscsi_update_param_value(param, value) < 0)
1159 return -1;
1160 }
1161
1162 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1163 struct iscsi_param *param_mxdsl;
1164 unsigned long long tmp;
1165 int rc;
1166
1167 rc = kstrtoull(param->value, 0, &tmp);
1168 if (rc < 0)
1169 return -1;
1170
1171 conn->conn_ops->MaxRecvDataSegmentLength = tmp;
1172 pr_debug("Saving op->MaxRecvDataSegmentLength from"
1173 " original initiator received value: %u\n",
1174 conn->conn_ops->MaxRecvDataSegmentLength);
1175
1176 param_mxdsl = iscsi_find_param_from_key(
1177 MAXXMITDATASEGMENTLENGTH,
1178 conn->param_list);
1179 if (!param_mxdsl)
1180 return -1;
1181
1182 rc = iscsi_update_param_value(param,
1183 param_mxdsl->value);
1184 if (rc < 0)
1185 return -1;
1186
1187 pr_debug("Updated %s to target MXDSL value: %s\n",
1188 param->name, param->value);
1189 }
1190
1191 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1192 negoitated_value = iscsi_get_value_from_number_range(
1193 param, value);
1194 if (!negoitated_value)
1195 return -1;
1196 if (iscsi_update_param_value(param, negoitated_value) < 0)
1197 return -1;
1198 } else if (IS_TYPE_VALUE_LIST(param)) {
1199 negoitated_value = iscsi_check_valuelist_for_support(
1200 param, value);
1201 if (!negoitated_value) {
1202 pr_err("Proposer's value list \"%s\" contains"
1203 " no valid values from Acceptor's value list"
1204 " \"%s\".\n", value, param->value);
1205 return -1;
1206 }
1207 if (iscsi_update_param_value(param, negoitated_value) < 0)
1208 return -1;
1209 } else if (IS_PHASE_DECLARATIVE(param)) {
1210 if (iscsi_update_param_value(param, value) < 0)
1211 return -1;
1212 SET_PSTATE_REPLY_OPTIONAL(param);
1213 }
1214
1215 return 0;
1216 }
1217
iscsi_check_proposer_state(struct iscsi_param * param,char * value)1218 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1219 {
1220 if (IS_PSTATE_RESPONSE_GOT(param)) {
1221 pr_err("Received key \"%s\" twice, protocol error.\n",
1222 param->name);
1223 return -1;
1224 }
1225
1226 if (IS_TYPE_NUMBER_RANGE(param)) {
1227 u32 left_val = 0, right_val = 0, recieved_value = 0;
1228 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1229 char *tilde_ptr = NULL;
1230
1231 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1232 if (iscsi_update_param_value(param, value) < 0)
1233 return -1;
1234 return 0;
1235 }
1236
1237 tilde_ptr = strchr(value, '~');
1238 if (tilde_ptr) {
1239 pr_err("Illegal \"~\" in response for \"%s\".\n",
1240 param->name);
1241 return -1;
1242 }
1243 tilde_ptr = strchr(param->value, '~');
1244 if (!tilde_ptr) {
1245 pr_err("Unable to locate numerical range"
1246 " indicator \"~\" for \"%s\".\n", param->name);
1247 return -1;
1248 }
1249 *tilde_ptr = '\0';
1250
1251 left_val_ptr = param->value;
1252 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1253 left_val = simple_strtoul(left_val_ptr, NULL, 0);
1254 right_val = simple_strtoul(right_val_ptr, NULL, 0);
1255 recieved_value = simple_strtoul(value, NULL, 0);
1256
1257 *tilde_ptr = '~';
1258
1259 if ((recieved_value < left_val) ||
1260 (recieved_value > right_val)) {
1261 pr_err("Illegal response \"%s=%u\", value must"
1262 " be between %u and %u.\n", param->name,
1263 recieved_value, left_val, right_val);
1264 return -1;
1265 }
1266 } else if (IS_TYPE_VALUE_LIST(param)) {
1267 char *comma_ptr = NULL, *tmp_ptr = NULL;
1268
1269 comma_ptr = strchr(value, ',');
1270 if (comma_ptr) {
1271 pr_err("Illegal \",\" in response for \"%s\".\n",
1272 param->name);
1273 return -1;
1274 }
1275
1276 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1277 if (!tmp_ptr)
1278 return -1;
1279 }
1280
1281 if (iscsi_update_param_value(param, value) < 0)
1282 return -1;
1283
1284 return 0;
1285 }
1286
iscsi_check_value(struct iscsi_param * param,char * value)1287 static int iscsi_check_value(struct iscsi_param *param, char *value)
1288 {
1289 char *comma_ptr = NULL;
1290
1291 if (!strcmp(value, REJECT)) {
1292 if (!strcmp(param->name, IFMARKINT) ||
1293 !strcmp(param->name, OFMARKINT)) {
1294 /*
1295 * Reject is not fatal for [I,O]FMarkInt, and causes
1296 * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1297 */
1298 SET_PSTATE_REJECT(param);
1299 return 0;
1300 }
1301 pr_err("Received %s=%s\n", param->name, value);
1302 return -1;
1303 }
1304 if (!strcmp(value, IRRELEVANT)) {
1305 pr_debug("Received %s=%s\n", param->name, value);
1306 SET_PSTATE_IRRELEVANT(param);
1307 return 0;
1308 }
1309 if (!strcmp(value, NOTUNDERSTOOD)) {
1310 if (!IS_PSTATE_PROPOSER(param)) {
1311 pr_err("Received illegal offer %s=%s\n",
1312 param->name, value);
1313 return -1;
1314 }
1315
1316 /* #warning FIXME: Add check for X-ExtensionKey here */
1317 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1318 " with \"%s\", protocol error.\n", param->name, value);
1319 return -1;
1320 }
1321
1322 do {
1323 comma_ptr = NULL;
1324 comma_ptr = strchr(value, ',');
1325
1326 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1327 pr_err("Detected value separator \",\", but"
1328 " key \"%s\" does not allow a value list,"
1329 " protocol error.\n", param->name);
1330 return -1;
1331 }
1332 if (comma_ptr)
1333 *comma_ptr = '\0';
1334
1335 if (strlen(value) > VALUE_MAXLEN) {
1336 pr_err("Value for key \"%s\" exceeds %d,"
1337 " protocol error.\n", param->name,
1338 VALUE_MAXLEN);
1339 return -1;
1340 }
1341
1342 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1343 if (iscsi_check_boolean_value(param, value) < 0)
1344 return -1;
1345 } else if (IS_TYPE_NUMBER(param)) {
1346 if (iscsi_check_numerical_value(param, value) < 0)
1347 return -1;
1348 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1349 if (iscsi_check_numerical_range_value(param, value) < 0)
1350 return -1;
1351 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1352 if (iscsi_check_string_or_list_value(param, value) < 0)
1353 return -1;
1354 } else {
1355 pr_err("Huh? 0x%02x\n", param->type);
1356 return -1;
1357 }
1358
1359 if (comma_ptr)
1360 *comma_ptr++ = ',';
1361
1362 value = comma_ptr;
1363 } while (value);
1364
1365 return 0;
1366 }
1367
__iscsi_check_key(char * key,int sender,struct iscsi_param_list * param_list)1368 static struct iscsi_param *__iscsi_check_key(
1369 char *key,
1370 int sender,
1371 struct iscsi_param_list *param_list)
1372 {
1373 struct iscsi_param *param;
1374
1375 if (strlen(key) > KEY_MAXLEN) {
1376 pr_err("Length of key name \"%s\" exceeds %d.\n",
1377 key, KEY_MAXLEN);
1378 return NULL;
1379 }
1380
1381 param = iscsi_find_param_from_key(key, param_list);
1382 if (!param)
1383 return NULL;
1384
1385 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1386 pr_err("Key \"%s\" may not be sent to %s,"
1387 " protocol error.\n", param->name,
1388 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1389 return NULL;
1390 }
1391
1392 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1393 pr_err("Key \"%s\" may not be sent to %s,"
1394 " protocol error.\n", param->name,
1395 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1396 return NULL;
1397 }
1398
1399 return param;
1400 }
1401
iscsi_check_key(char * key,int phase,int sender,struct iscsi_param_list * param_list)1402 static struct iscsi_param *iscsi_check_key(
1403 char *key,
1404 int phase,
1405 int sender,
1406 struct iscsi_param_list *param_list)
1407 {
1408 struct iscsi_param *param;
1409 /*
1410 * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
1411 */
1412 if (strlen(key) > KEY_MAXLEN) {
1413 pr_err("Length of key name \"%s\" exceeds %d.\n",
1414 key, KEY_MAXLEN);
1415 return NULL;
1416 }
1417
1418 param = iscsi_find_param_from_key(key, param_list);
1419 if (!param)
1420 return NULL;
1421
1422 if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1423 pr_err("Key \"%s\" may not be sent to %s,"
1424 " protocol error.\n", param->name,
1425 (sender & SENDER_RECEIVER) ? "target" : "initiator");
1426 return NULL;
1427 }
1428 if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1429 pr_err("Key \"%s\" may not be sent to %s,"
1430 " protocol error.\n", param->name,
1431 (sender & SENDER_RECEIVER) ? "initiator" : "target");
1432 return NULL;
1433 }
1434
1435 if (IS_PSTATE_ACCEPTOR(param)) {
1436 pr_err("Key \"%s\" received twice, protocol error.\n",
1437 key);
1438 return NULL;
1439 }
1440
1441 if (!phase)
1442 return param;
1443
1444 if (!(param->phase & phase)) {
1445 pr_err("Key \"%s\" may not be negotiated during ",
1446 param->name);
1447 switch (phase) {
1448 case PHASE_SECURITY:
1449 pr_debug("Security phase.\n");
1450 break;
1451 case PHASE_OPERATIONAL:
1452 pr_debug("Operational phase.\n");
1453 break;
1454 default:
1455 pr_debug("Unknown phase.\n");
1456 }
1457 return NULL;
1458 }
1459
1460 return param;
1461 }
1462
iscsi_enforce_integrity_rules(u8 phase,struct iscsi_param_list * param_list)1463 static int iscsi_enforce_integrity_rules(
1464 u8 phase,
1465 struct iscsi_param_list *param_list)
1466 {
1467 char *tmpptr;
1468 u8 DataSequenceInOrder = 0;
1469 u8 ErrorRecoveryLevel = 0, SessionType = 0;
1470 u8 IFMarker = 0, OFMarker = 0;
1471 u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1;
1472 u32 FirstBurstLength = 0, MaxBurstLength = 0;
1473 struct iscsi_param *param = NULL;
1474
1475 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1476 if (!(param->phase & phase))
1477 continue;
1478 if (!strcmp(param->name, SESSIONTYPE))
1479 if (!strcmp(param->value, NORMAL))
1480 SessionType = 1;
1481 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1482 ErrorRecoveryLevel = simple_strtoul(param->value,
1483 &tmpptr, 0);
1484 if (!strcmp(param->name, DATASEQUENCEINORDER))
1485 if (!strcmp(param->value, YES))
1486 DataSequenceInOrder = 1;
1487 if (!strcmp(param->name, MAXBURSTLENGTH))
1488 MaxBurstLength = simple_strtoul(param->value,
1489 &tmpptr, 0);
1490 if (!strcmp(param->name, IFMARKER))
1491 if (!strcmp(param->value, YES))
1492 IFMarker = 1;
1493 if (!strcmp(param->name, OFMARKER))
1494 if (!strcmp(param->value, YES))
1495 OFMarker = 1;
1496 if (!strcmp(param->name, IFMARKINT))
1497 if (!strcmp(param->value, REJECT))
1498 IFMarkInt_Reject = 1;
1499 if (!strcmp(param->name, OFMARKINT))
1500 if (!strcmp(param->value, REJECT))
1501 OFMarkInt_Reject = 1;
1502 }
1503
1504 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1505 if (!(param->phase & phase))
1506 continue;
1507 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1508 (strcmp(param->name, IFMARKER) &&
1509 strcmp(param->name, OFMARKER) &&
1510 strcmp(param->name, IFMARKINT) &&
1511 strcmp(param->name, OFMARKINT))))
1512 continue;
1513 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1514 DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1515 if (strcmp(param->value, "1")) {
1516 if (iscsi_update_param_value(param, "1") < 0)
1517 return -1;
1518 pr_debug("Reset \"%s\" to \"%s\".\n",
1519 param->name, param->value);
1520 }
1521 }
1522 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1523 if (strcmp(param->value, "1")) {
1524 if (iscsi_update_param_value(param, "1") < 0)
1525 return -1;
1526 pr_debug("Reset \"%s\" to \"%s\".\n",
1527 param->name, param->value);
1528 }
1529 }
1530 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1531 FirstBurstLength = simple_strtoul(param->value,
1532 &tmpptr, 0);
1533 if (FirstBurstLength > MaxBurstLength) {
1534 char tmpbuf[11];
1535 memset(tmpbuf, 0, sizeof(tmpbuf));
1536 sprintf(tmpbuf, "%u", MaxBurstLength);
1537 if (iscsi_update_param_value(param, tmpbuf))
1538 return -1;
1539 pr_debug("Reset \"%s\" to \"%s\".\n",
1540 param->name, param->value);
1541 }
1542 }
1543 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1544 if (iscsi_update_param_value(param, NO) < 0)
1545 return -1;
1546 IFMarker = 0;
1547 pr_debug("Reset \"%s\" to \"%s\".\n",
1548 param->name, param->value);
1549 }
1550 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1551 if (iscsi_update_param_value(param, NO) < 0)
1552 return -1;
1553 OFMarker = 0;
1554 pr_debug("Reset \"%s\" to \"%s\".\n",
1555 param->name, param->value);
1556 }
1557 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1558 if (!strcmp(param->value, REJECT))
1559 continue;
1560 param->state &= ~PSTATE_NEGOTIATE;
1561 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1562 return -1;
1563 pr_debug("Reset \"%s\" to \"%s\".\n",
1564 param->name, param->value);
1565 }
1566 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1567 if (!strcmp(param->value, REJECT))
1568 continue;
1569 param->state &= ~PSTATE_NEGOTIATE;
1570 if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1571 return -1;
1572 pr_debug("Reset \"%s\" to \"%s\".\n",
1573 param->name, param->value);
1574 }
1575 }
1576
1577 return 0;
1578 }
1579
iscsi_decode_text_input(u8 phase,u8 sender,char * textbuf,u32 length,struct iscsi_conn * conn)1580 int iscsi_decode_text_input(
1581 u8 phase,
1582 u8 sender,
1583 char *textbuf,
1584 u32 length,
1585 struct iscsi_conn *conn)
1586 {
1587 struct iscsi_param_list *param_list = conn->param_list;
1588 char *tmpbuf, *start = NULL, *end = NULL;
1589
1590 tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1591 if (!tmpbuf) {
1592 pr_err("Unable to allocate %u + 1 bytes for tmpbuf.\n", length);
1593 return -1;
1594 }
1595
1596 memcpy(tmpbuf, textbuf, length);
1597 tmpbuf[length] = '\0';
1598 start = tmpbuf;
1599 end = (start + length);
1600
1601 while (start < end) {
1602 char *key, *value;
1603 struct iscsi_param *param;
1604
1605 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1606 kfree(tmpbuf);
1607 return -1;
1608 }
1609
1610 pr_debug("Got key: %s=%s\n", key, value);
1611
1612 if (phase & PHASE_SECURITY) {
1613 if (iscsi_check_for_auth_key(key) > 0) {
1614 kfree(tmpbuf);
1615 return 1;
1616 }
1617 }
1618
1619 param = iscsi_check_key(key, phase, sender, param_list);
1620 if (!param) {
1621 if (iscsi_add_notunderstood_response(key,
1622 value, param_list) < 0) {
1623 kfree(tmpbuf);
1624 return -1;
1625 }
1626 start += strlen(key) + strlen(value) + 2;
1627 continue;
1628 }
1629 if (iscsi_check_value(param, value) < 0) {
1630 kfree(tmpbuf);
1631 return -1;
1632 }
1633
1634 start += strlen(key) + strlen(value) + 2;
1635
1636 if (IS_PSTATE_PROPOSER(param)) {
1637 if (iscsi_check_proposer_state(param, value) < 0) {
1638 kfree(tmpbuf);
1639 return -1;
1640 }
1641 SET_PSTATE_RESPONSE_GOT(param);
1642 } else {
1643 if (iscsi_check_acceptor_state(param, value, conn) < 0) {
1644 kfree(tmpbuf);
1645 return -1;
1646 }
1647 SET_PSTATE_ACCEPTOR(param);
1648 }
1649 }
1650
1651 kfree(tmpbuf);
1652 return 0;
1653 }
1654
iscsi_encode_text_output(u8 phase,u8 sender,char * textbuf,u32 * length,struct iscsi_param_list * param_list)1655 int iscsi_encode_text_output(
1656 u8 phase,
1657 u8 sender,
1658 char *textbuf,
1659 u32 *length,
1660 struct iscsi_param_list *param_list)
1661 {
1662 char *output_buf = NULL;
1663 struct iscsi_extra_response *er;
1664 struct iscsi_param *param;
1665
1666 output_buf = textbuf + *length;
1667
1668 if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1669 return -1;
1670
1671 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1672 if (!(param->sender & sender))
1673 continue;
1674 if (IS_PSTATE_ACCEPTOR(param) &&
1675 !IS_PSTATE_RESPONSE_SENT(param) &&
1676 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1677 (param->phase & phase)) {
1678 *length += sprintf(output_buf, "%s=%s",
1679 param->name, param->value);
1680 *length += 1;
1681 output_buf = textbuf + *length;
1682 SET_PSTATE_RESPONSE_SENT(param);
1683 pr_debug("Sending key: %s=%s\n",
1684 param->name, param->value);
1685 continue;
1686 }
1687 if (IS_PSTATE_NEGOTIATE(param) &&
1688 !IS_PSTATE_ACCEPTOR(param) &&
1689 !IS_PSTATE_PROPOSER(param) &&
1690 (param->phase & phase)) {
1691 *length += sprintf(output_buf, "%s=%s",
1692 param->name, param->value);
1693 *length += 1;
1694 output_buf = textbuf + *length;
1695 SET_PSTATE_PROPOSER(param);
1696 iscsi_check_proposer_for_optional_reply(param);
1697 pr_debug("Sending key: %s=%s\n",
1698 param->name, param->value);
1699 }
1700 }
1701
1702 list_for_each_entry(er, ¶m_list->extra_response_list, er_list) {
1703 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1704 *length += 1;
1705 output_buf = textbuf + *length;
1706 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1707 }
1708 iscsi_release_extra_responses(param_list);
1709
1710 return 0;
1711 }
1712
iscsi_check_negotiated_keys(struct iscsi_param_list * param_list)1713 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1714 {
1715 int ret = 0;
1716 struct iscsi_param *param;
1717
1718 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1719 if (IS_PSTATE_NEGOTIATE(param) &&
1720 IS_PSTATE_PROPOSER(param) &&
1721 !IS_PSTATE_RESPONSE_GOT(param) &&
1722 !IS_PSTATE_REPLY_OPTIONAL(param) &&
1723 !IS_PHASE_DECLARATIVE(param)) {
1724 pr_err("No response for proposed key \"%s\".\n",
1725 param->name);
1726 ret = -1;
1727 }
1728 }
1729
1730 return ret;
1731 }
1732
iscsi_change_param_value(char * keyvalue,struct iscsi_param_list * param_list,int check_key)1733 int iscsi_change_param_value(
1734 char *keyvalue,
1735 struct iscsi_param_list *param_list,
1736 int check_key)
1737 {
1738 char *key = NULL, *value = NULL;
1739 struct iscsi_param *param;
1740 int sender = 0;
1741
1742 if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1743 return -1;
1744
1745 if (!check_key) {
1746 param = __iscsi_check_key(keyvalue, sender, param_list);
1747 if (!param)
1748 return -1;
1749 } else {
1750 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1751 if (!param)
1752 return -1;
1753
1754 param->set_param = 1;
1755 if (iscsi_check_value(param, value) < 0) {
1756 param->set_param = 0;
1757 return -1;
1758 }
1759 param->set_param = 0;
1760 }
1761
1762 if (iscsi_update_param_value(param, value) < 0)
1763 return -1;
1764
1765 return 0;
1766 }
1767
iscsi_set_connection_parameters(struct iscsi_conn_ops * ops,struct iscsi_param_list * param_list)1768 void iscsi_set_connection_parameters(
1769 struct iscsi_conn_ops *ops,
1770 struct iscsi_param_list *param_list)
1771 {
1772 char *tmpptr;
1773 struct iscsi_param *param;
1774
1775 pr_debug("---------------------------------------------------"
1776 "---------------\n");
1777 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1778 /*
1779 * Special case to set MAXXMITDATASEGMENTLENGTH from the
1780 * target requested MaxRecvDataSegmentLength, even though
1781 * this key is not sent over the wire.
1782 */
1783 if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) {
1784 ops->MaxXmitDataSegmentLength =
1785 simple_strtoul(param->value, &tmpptr, 0);
1786 pr_debug("MaxXmitDataSegmentLength: %s\n",
1787 param->value);
1788 }
1789
1790 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1791 continue;
1792 if (!strcmp(param->name, AUTHMETHOD)) {
1793 pr_debug("AuthMethod: %s\n",
1794 param->value);
1795 } else if (!strcmp(param->name, HEADERDIGEST)) {
1796 ops->HeaderDigest = !strcmp(param->value, CRC32C);
1797 pr_debug("HeaderDigest: %s\n",
1798 param->value);
1799 } else if (!strcmp(param->name, DATADIGEST)) {
1800 ops->DataDigest = !strcmp(param->value, CRC32C);
1801 pr_debug("DataDigest: %s\n",
1802 param->value);
1803 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1804 /*
1805 * At this point iscsi_check_acceptor_state() will have
1806 * set ops->MaxRecvDataSegmentLength from the original
1807 * initiator provided value.
1808 */
1809 pr_debug("MaxRecvDataSegmentLength: %u\n",
1810 ops->MaxRecvDataSegmentLength);
1811 } else if (!strcmp(param->name, OFMARKER)) {
1812 ops->OFMarker = !strcmp(param->value, YES);
1813 pr_debug("OFMarker: %s\n",
1814 param->value);
1815 } else if (!strcmp(param->name, IFMARKER)) {
1816 ops->IFMarker = !strcmp(param->value, YES);
1817 pr_debug("IFMarker: %s\n",
1818 param->value);
1819 } else if (!strcmp(param->name, OFMARKINT)) {
1820 ops->OFMarkInt =
1821 simple_strtoul(param->value, &tmpptr, 0);
1822 pr_debug("OFMarkInt: %s\n",
1823 param->value);
1824 } else if (!strcmp(param->name, IFMARKINT)) {
1825 ops->IFMarkInt =
1826 simple_strtoul(param->value, &tmpptr, 0);
1827 pr_debug("IFMarkInt: %s\n",
1828 param->value);
1829 } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) {
1830 ops->InitiatorRecvDataSegmentLength =
1831 simple_strtoul(param->value, &tmpptr, 0);
1832 pr_debug("InitiatorRecvDataSegmentLength: %s\n",
1833 param->value);
1834 ops->MaxRecvDataSegmentLength =
1835 ops->InitiatorRecvDataSegmentLength;
1836 pr_debug("Set MRDSL from InitiatorRecvDataSegmentLength\n");
1837 } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) {
1838 ops->TargetRecvDataSegmentLength =
1839 simple_strtoul(param->value, &tmpptr, 0);
1840 pr_debug("TargetRecvDataSegmentLength: %s\n",
1841 param->value);
1842 ops->MaxXmitDataSegmentLength =
1843 ops->TargetRecvDataSegmentLength;
1844 pr_debug("Set MXDSL from TargetRecvDataSegmentLength\n");
1845 }
1846 }
1847 pr_debug("----------------------------------------------------"
1848 "--------------\n");
1849 }
1850
iscsi_set_session_parameters(struct iscsi_sess_ops * ops,struct iscsi_param_list * param_list,int leading)1851 void iscsi_set_session_parameters(
1852 struct iscsi_sess_ops *ops,
1853 struct iscsi_param_list *param_list,
1854 int leading)
1855 {
1856 char *tmpptr;
1857 struct iscsi_param *param;
1858
1859 pr_debug("----------------------------------------------------"
1860 "--------------\n");
1861 list_for_each_entry(param, ¶m_list->param_list, p_list) {
1862 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1863 continue;
1864 if (!strcmp(param->name, INITIATORNAME)) {
1865 if (!param->value)
1866 continue;
1867 if (leading)
1868 snprintf(ops->InitiatorName,
1869 sizeof(ops->InitiatorName),
1870 "%s", param->value);
1871 pr_debug("InitiatorName: %s\n",
1872 param->value);
1873 } else if (!strcmp(param->name, INITIATORALIAS)) {
1874 if (!param->value)
1875 continue;
1876 snprintf(ops->InitiatorAlias,
1877 sizeof(ops->InitiatorAlias),
1878 "%s", param->value);
1879 pr_debug("InitiatorAlias: %s\n",
1880 param->value);
1881 } else if (!strcmp(param->name, TARGETNAME)) {
1882 if (!param->value)
1883 continue;
1884 if (leading)
1885 snprintf(ops->TargetName,
1886 sizeof(ops->TargetName),
1887 "%s", param->value);
1888 pr_debug("TargetName: %s\n",
1889 param->value);
1890 } else if (!strcmp(param->name, TARGETALIAS)) {
1891 if (!param->value)
1892 continue;
1893 snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1894 "%s", param->value);
1895 pr_debug("TargetAlias: %s\n",
1896 param->value);
1897 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1898 ops->TargetPortalGroupTag =
1899 simple_strtoul(param->value, &tmpptr, 0);
1900 pr_debug("TargetPortalGroupTag: %s\n",
1901 param->value);
1902 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1903 ops->MaxConnections =
1904 simple_strtoul(param->value, &tmpptr, 0);
1905 pr_debug("MaxConnections: %s\n",
1906 param->value);
1907 } else if (!strcmp(param->name, INITIALR2T)) {
1908 ops->InitialR2T = !strcmp(param->value, YES);
1909 pr_debug("InitialR2T: %s\n",
1910 param->value);
1911 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1912 ops->ImmediateData = !strcmp(param->value, YES);
1913 pr_debug("ImmediateData: %s\n",
1914 param->value);
1915 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1916 ops->MaxBurstLength =
1917 simple_strtoul(param->value, &tmpptr, 0);
1918 pr_debug("MaxBurstLength: %s\n",
1919 param->value);
1920 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1921 ops->FirstBurstLength =
1922 simple_strtoul(param->value, &tmpptr, 0);
1923 pr_debug("FirstBurstLength: %s\n",
1924 param->value);
1925 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1926 ops->DefaultTime2Wait =
1927 simple_strtoul(param->value, &tmpptr, 0);
1928 pr_debug("DefaultTime2Wait: %s\n",
1929 param->value);
1930 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1931 ops->DefaultTime2Retain =
1932 simple_strtoul(param->value, &tmpptr, 0);
1933 pr_debug("DefaultTime2Retain: %s\n",
1934 param->value);
1935 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1936 ops->MaxOutstandingR2T =
1937 simple_strtoul(param->value, &tmpptr, 0);
1938 pr_debug("MaxOutstandingR2T: %s\n",
1939 param->value);
1940 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1941 ops->DataPDUInOrder = !strcmp(param->value, YES);
1942 pr_debug("DataPDUInOrder: %s\n",
1943 param->value);
1944 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1945 ops->DataSequenceInOrder = !strcmp(param->value, YES);
1946 pr_debug("DataSequenceInOrder: %s\n",
1947 param->value);
1948 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1949 ops->ErrorRecoveryLevel =
1950 simple_strtoul(param->value, &tmpptr, 0);
1951 pr_debug("ErrorRecoveryLevel: %s\n",
1952 param->value);
1953 } else if (!strcmp(param->name, SESSIONTYPE)) {
1954 ops->SessionType = !strcmp(param->value, DISCOVERY);
1955 pr_debug("SessionType: %s\n",
1956 param->value);
1957 } else if (!strcmp(param->name, RDMAEXTENSIONS)) {
1958 ops->RDMAExtensions = !strcmp(param->value, YES);
1959 pr_debug("RDMAExtensions: %s\n",
1960 param->value);
1961 }
1962 }
1963 pr_debug("----------------------------------------------------"
1964 "--------------\n");
1965
1966 }
1967