Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6
[linux-2.6.git] / drivers / target / iscsi / iscsi_target_parameters.c
1 /*******************************************************************************
2  * This file contains main functions related to iSCSI Parameter negotiation.
3  *
4  * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
5  *
6  * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
7  *
8  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  ******************************************************************************/
20
21 #include <linux/slab.h>
22
23 #include "iscsi_target_core.h"
24 #include "iscsi_target_util.h"
25 #include "iscsi_target_parameters.h"
26
27 int iscsi_login_rx_data(
28         struct iscsi_conn *conn,
29         char *buf,
30         int length)
31 {
32         int rx_got;
33         struct kvec iov;
34
35         memset(&iov, 0, sizeof(struct kvec));
36         iov.iov_len     = length;
37         iov.iov_base    = buf;
38
39         /*
40          * Initial Marker-less Interval.
41          * Add the values regardless of IFMarker/OFMarker, considering
42          * it may not be negoitated yet.
43          */
44         conn->of_marker += length;
45
46         rx_got = rx_data(conn, &iov, 1, length);
47         if (rx_got != length) {
48                 pr_err("rx_data returned %d, expecting %d.\n",
49                                 rx_got, length);
50                 return -1;
51         }
52
53         return 0 ;
54 }
55
56 int iscsi_login_tx_data(
57         struct iscsi_conn *conn,
58         char *pdu_buf,
59         char *text_buf,
60         int text_length)
61 {
62         int length, tx_sent;
63         struct kvec iov[2];
64
65         length = (ISCSI_HDR_LEN + text_length);
66
67         memset(&iov[0], 0, 2 * sizeof(struct kvec));
68         iov[0].iov_len          = ISCSI_HDR_LEN;
69         iov[0].iov_base         = pdu_buf;
70         iov[1].iov_len          = text_length;
71         iov[1].iov_base         = text_buf;
72
73         /*
74          * Initial Marker-less Interval.
75          * Add the values regardless of IFMarker/OFMarker, considering
76          * it may not be negoitated yet.
77          */
78         conn->if_marker += length;
79
80         tx_sent = tx_data(conn, &iov[0], 2, length);
81         if (tx_sent != length) {
82                 pr_err("tx_data returned %d, expecting %d.\n",
83                                 tx_sent, length);
84                 return -1;
85         }
86
87         return 0;
88 }
89
90 void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops)
91 {
92         pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ?
93                                 "CRC32C" : "None");
94         pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ?
95                                 "CRC32C" : "None");
96         pr_debug("MaxRecvDataSegmentLength: %u\n",
97                                 conn_ops->MaxRecvDataSegmentLength);
98         pr_debug("OFMarker: %s\n", (conn_ops->OFMarker) ? "Yes" : "No");
99         pr_debug("IFMarker: %s\n", (conn_ops->IFMarker) ? "Yes" : "No");
100         if (conn_ops->OFMarker)
101                 pr_debug("OFMarkInt: %u\n", conn_ops->OFMarkInt);
102         if (conn_ops->IFMarker)
103                 pr_debug("IFMarkInt: %u\n", conn_ops->IFMarkInt);
104 }
105
106 void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops)
107 {
108         pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName);
109         pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias);
110         pr_debug("TargetName: %s\n", sess_ops->TargetName);
111         pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias);
112         pr_debug("TargetPortalGroupTag: %hu\n",
113                         sess_ops->TargetPortalGroupTag);
114         pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections);
115         pr_debug("InitialR2T: %s\n",
116                         (sess_ops->InitialR2T) ? "Yes" : "No");
117         pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ?
118                         "Yes" : "No");
119         pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength);
120         pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength);
121         pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait);
122         pr_debug("DefaultTime2Retain: %hu\n",
123                         sess_ops->DefaultTime2Retain);
124         pr_debug("MaxOutstandingR2T: %hu\n",
125                         sess_ops->MaxOutstandingR2T);
126         pr_debug("DataPDUInOrder: %s\n",
127                         (sess_ops->DataPDUInOrder) ? "Yes" : "No");
128         pr_debug("DataSequenceInOrder: %s\n",
129                         (sess_ops->DataSequenceInOrder) ? "Yes" : "No");
130         pr_debug("ErrorRecoveryLevel: %hu\n",
131                         sess_ops->ErrorRecoveryLevel);
132         pr_debug("SessionType: %s\n", (sess_ops->SessionType) ?
133                         "Discovery" : "Normal");
134 }
135
136 void iscsi_print_params(struct iscsi_param_list *param_list)
137 {
138         struct iscsi_param *param;
139
140         list_for_each_entry(param, &param_list->param_list, p_list)
141                 pr_debug("%s: %s\n", param->name, param->value);
142 }
143
144 static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list,
145                 char *name, char *value, u8 phase, u8 scope, u8 sender,
146                 u16 type_range, u8 use)
147 {
148         struct iscsi_param *param = NULL;
149
150         param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
151         if (!param) {
152                 pr_err("Unable to allocate memory for parameter.\n");
153                 goto out;
154         }
155         INIT_LIST_HEAD(&param->p_list);
156
157         param->name = kzalloc(strlen(name) + 1, GFP_KERNEL);
158         if (!param->name) {
159                 pr_err("Unable to allocate memory for parameter name.\n");
160                 goto out;
161         }
162
163         param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
164         if (!param->value) {
165                 pr_err("Unable to allocate memory for parameter value.\n");
166                 goto out;
167         }
168
169         memcpy(param->name, name, strlen(name));
170         param->name[strlen(name)] = '\0';
171         memcpy(param->value, value, strlen(value));
172         param->value[strlen(value)] = '\0';
173         param->phase            = phase;
174         param->scope            = scope;
175         param->sender           = sender;
176         param->use              = use;
177         param->type_range       = type_range;
178
179         switch (param->type_range) {
180         case TYPERANGE_BOOL_AND:
181                 param->type = TYPE_BOOL_AND;
182                 break;
183         case TYPERANGE_BOOL_OR:
184                 param->type = TYPE_BOOL_OR;
185                 break;
186         case TYPERANGE_0_TO_2:
187         case TYPERANGE_0_TO_3600:
188         case TYPERANGE_0_TO_32767:
189         case TYPERANGE_0_TO_65535:
190         case TYPERANGE_1_TO_65535:
191         case TYPERANGE_2_TO_3600:
192         case TYPERANGE_512_TO_16777215:
193                 param->type = TYPE_NUMBER;
194                 break;
195         case TYPERANGE_AUTH:
196         case TYPERANGE_DIGEST:
197                 param->type = TYPE_VALUE_LIST | TYPE_STRING;
198                 break;
199         case TYPERANGE_MARKINT:
200                 param->type = TYPE_NUMBER_RANGE;
201                 param->type_range |= TYPERANGE_1_TO_65535;
202                 break;
203         case TYPERANGE_ISCSINAME:
204         case TYPERANGE_SESSIONTYPE:
205         case TYPERANGE_TARGETADDRESS:
206         case TYPERANGE_UTF8:
207                 param->type = TYPE_STRING;
208                 break;
209         default:
210                 pr_err("Unknown type_range 0x%02x\n",
211                                 param->type_range);
212                 goto out;
213         }
214         list_add_tail(&param->p_list, &param_list->param_list);
215
216         return param;
217 out:
218         if (param) {
219                 kfree(param->value);
220                 kfree(param->name);
221                 kfree(param);
222         }
223
224         return NULL;
225 }
226
227 /* #warning Add extension keys */
228 int iscsi_create_default_params(struct iscsi_param_list **param_list_ptr)
229 {
230         struct iscsi_param *param = NULL;
231         struct iscsi_param_list *pl;
232
233         pl = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
234         if (!pl) {
235                 pr_err("Unable to allocate memory for"
236                                 " struct iscsi_param_list.\n");
237                 return -1 ;
238         }
239         INIT_LIST_HEAD(&pl->param_list);
240         INIT_LIST_HEAD(&pl->extra_response_list);
241
242         /*
243          * The format for setting the initial parameter definitions are:
244          *
245          * Parameter name:
246          * Initial value:
247          * Allowable phase:
248          * Scope:
249          * Allowable senders:
250          * Typerange:
251          * Use:
252          */
253         param = iscsi_set_default_param(pl, AUTHMETHOD, INITIAL_AUTHMETHOD,
254                         PHASE_SECURITY, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
255                         TYPERANGE_AUTH, USE_INITIAL_ONLY);
256         if (!param)
257                 goto out;
258
259         param = iscsi_set_default_param(pl, HEADERDIGEST, INITIAL_HEADERDIGEST,
260                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
261                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
262         if (!param)
263                 goto out;
264
265         param = iscsi_set_default_param(pl, DATADIGEST, INITIAL_DATADIGEST,
266                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
267                         TYPERANGE_DIGEST, USE_INITIAL_ONLY);
268         if (!param)
269                 goto out;
270
271         param = iscsi_set_default_param(pl, MAXCONNECTIONS,
272                         INITIAL_MAXCONNECTIONS, PHASE_OPERATIONAL,
273                         SCOPE_SESSION_WIDE, SENDER_BOTH,
274                         TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
275         if (!param)
276                 goto out;
277
278         param = iscsi_set_default_param(pl, SENDTARGETS, INITIAL_SENDTARGETS,
279                         PHASE_FFP0, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
280                         TYPERANGE_UTF8, 0);
281         if (!param)
282                 goto out;
283
284         param = iscsi_set_default_param(pl, TARGETNAME, INITIAL_TARGETNAME,
285                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_BOTH,
286                         TYPERANGE_ISCSINAME, USE_ALL);
287         if (!param)
288                 goto out;
289
290         param = iscsi_set_default_param(pl, INITIATORNAME,
291                         INITIAL_INITIATORNAME, PHASE_DECLARATIVE,
292                         SCOPE_SESSION_WIDE, SENDER_INITIATOR,
293                         TYPERANGE_ISCSINAME, USE_INITIAL_ONLY);
294         if (!param)
295                 goto out;
296
297         param = iscsi_set_default_param(pl, TARGETALIAS, INITIAL_TARGETALIAS,
298                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
299                         TYPERANGE_UTF8, USE_ALL);
300         if (!param)
301                 goto out;
302
303         param = iscsi_set_default_param(pl, INITIATORALIAS,
304                         INITIAL_INITIATORALIAS, PHASE_DECLARATIVE,
305                         SCOPE_SESSION_WIDE, SENDER_INITIATOR, TYPERANGE_UTF8,
306                         USE_ALL);
307         if (!param)
308                 goto out;
309
310         param = iscsi_set_default_param(pl, TARGETADDRESS,
311                         INITIAL_TARGETADDRESS, PHASE_DECLARATIVE,
312                         SCOPE_SESSION_WIDE, SENDER_TARGET,
313                         TYPERANGE_TARGETADDRESS, USE_ALL);
314         if (!param)
315                 goto out;
316
317         param = iscsi_set_default_param(pl, TARGETPORTALGROUPTAG,
318                         INITIAL_TARGETPORTALGROUPTAG,
319                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_TARGET,
320                         TYPERANGE_0_TO_65535, USE_INITIAL_ONLY);
321         if (!param)
322                 goto out;
323
324         param = iscsi_set_default_param(pl, INITIALR2T, INITIAL_INITIALR2T,
325                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
326                         TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
327         if (!param)
328                 goto out;
329
330         param = iscsi_set_default_param(pl, IMMEDIATEDATA,
331                         INITIAL_IMMEDIATEDATA, PHASE_OPERATIONAL,
332                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_AND,
333                         USE_LEADING_ONLY);
334         if (!param)
335                 goto out;
336
337         param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH,
338                         INITIAL_MAXRECVDATASEGMENTLENGTH,
339                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
340                         TYPERANGE_512_TO_16777215, USE_ALL);
341         if (!param)
342                 goto out;
343
344         param = iscsi_set_default_param(pl, MAXBURSTLENGTH,
345                         INITIAL_MAXBURSTLENGTH, PHASE_OPERATIONAL,
346                         SCOPE_SESSION_WIDE, SENDER_BOTH,
347                         TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
348         if (!param)
349                 goto out;
350
351         param = iscsi_set_default_param(pl, FIRSTBURSTLENGTH,
352                         INITIAL_FIRSTBURSTLENGTH,
353                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
354                         TYPERANGE_512_TO_16777215, USE_LEADING_ONLY);
355         if (!param)
356                 goto out;
357
358         param = iscsi_set_default_param(pl, DEFAULTTIME2WAIT,
359                         INITIAL_DEFAULTTIME2WAIT,
360                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
361                         TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
362         if (!param)
363                 goto out;
364
365         param = iscsi_set_default_param(pl, DEFAULTTIME2RETAIN,
366                         INITIAL_DEFAULTTIME2RETAIN,
367                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
368                         TYPERANGE_0_TO_3600, USE_LEADING_ONLY);
369         if (!param)
370                 goto out;
371
372         param = iscsi_set_default_param(pl, MAXOUTSTANDINGR2T,
373                         INITIAL_MAXOUTSTANDINGR2T,
374                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
375                         TYPERANGE_1_TO_65535, USE_LEADING_ONLY);
376         if (!param)
377                 goto out;
378
379         param = iscsi_set_default_param(pl, DATAPDUINORDER,
380                         INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL,
381                         SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR,
382                         USE_LEADING_ONLY);
383         if (!param)
384                 goto out;
385
386         param = iscsi_set_default_param(pl, DATASEQUENCEINORDER,
387                         INITIAL_DATASEQUENCEINORDER,
388                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
389                         TYPERANGE_BOOL_OR, USE_LEADING_ONLY);
390         if (!param)
391                 goto out;
392
393         param = iscsi_set_default_param(pl, ERRORRECOVERYLEVEL,
394                         INITIAL_ERRORRECOVERYLEVEL,
395                         PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH,
396                         TYPERANGE_0_TO_2, USE_LEADING_ONLY);
397         if (!param)
398                 goto out;
399
400         param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE,
401                         PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR,
402                         TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY);
403         if (!param)
404                 goto out;
405
406         param = iscsi_set_default_param(pl, IFMARKER, INITIAL_IFMARKER,
407                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
408                         TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
409         if (!param)
410                 goto out;
411
412         param = iscsi_set_default_param(pl, OFMARKER, INITIAL_OFMARKER,
413                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
414                         TYPERANGE_BOOL_AND, USE_INITIAL_ONLY);
415         if (!param)
416                 goto out;
417
418         param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT,
419                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
420                         TYPERANGE_MARKINT, USE_INITIAL_ONLY);
421         if (!param)
422                 goto out;
423
424         param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT,
425                         PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH,
426                         TYPERANGE_MARKINT, USE_INITIAL_ONLY);
427         if (!param)
428                 goto out;
429
430         *param_list_ptr = pl;
431         return 0;
432 out:
433         iscsi_release_param_list(pl);
434         return -1;
435 }
436
437 int iscsi_set_keys_to_negotiate(
438         int sessiontype,
439         struct iscsi_param_list *param_list)
440 {
441         struct iscsi_param *param;
442
443         list_for_each_entry(param, &param_list->param_list, p_list) {
444                 param->state = 0;
445                 if (!strcmp(param->name, AUTHMETHOD)) {
446                         SET_PSTATE_NEGOTIATE(param);
447                 } else if (!strcmp(param->name, HEADERDIGEST)) {
448                         SET_PSTATE_NEGOTIATE(param);
449                 } else if (!strcmp(param->name, DATADIGEST)) {
450                         SET_PSTATE_NEGOTIATE(param);
451                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
452                         SET_PSTATE_NEGOTIATE(param);
453                 } else if (!strcmp(param->name, TARGETNAME)) {
454                         continue;
455                 } else if (!strcmp(param->name, INITIATORNAME)) {
456                         continue;
457                 } else if (!strcmp(param->name, TARGETALIAS)) {
458                         if (param->value)
459                                 SET_PSTATE_NEGOTIATE(param);
460                 } else if (!strcmp(param->name, INITIATORALIAS)) {
461                         continue;
462                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
463                         SET_PSTATE_NEGOTIATE(param);
464                 } else if (!strcmp(param->name, INITIALR2T)) {
465                         SET_PSTATE_NEGOTIATE(param);
466                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
467                         SET_PSTATE_NEGOTIATE(param);
468                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
469                         SET_PSTATE_NEGOTIATE(param);
470                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
471                         SET_PSTATE_NEGOTIATE(param);
472                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
473                         SET_PSTATE_NEGOTIATE(param);
474                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
475                         SET_PSTATE_NEGOTIATE(param);
476                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
477                         SET_PSTATE_NEGOTIATE(param);
478                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
479                         SET_PSTATE_NEGOTIATE(param);
480                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
481                         SET_PSTATE_NEGOTIATE(param);
482                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
483                         SET_PSTATE_NEGOTIATE(param);
484                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
485                         SET_PSTATE_NEGOTIATE(param);
486                 } else if (!strcmp(param->name, SESSIONTYPE)) {
487                         SET_PSTATE_NEGOTIATE(param);
488                 } else if (!strcmp(param->name, IFMARKER)) {
489                         SET_PSTATE_NEGOTIATE(param);
490                 } else if (!strcmp(param->name, OFMARKER)) {
491                         SET_PSTATE_NEGOTIATE(param);
492                 } else if (!strcmp(param->name, IFMARKINT)) {
493                         SET_PSTATE_NEGOTIATE(param);
494                 } else if (!strcmp(param->name, OFMARKINT)) {
495                         SET_PSTATE_NEGOTIATE(param);
496                 }
497         }
498
499         return 0;
500 }
501
502 int iscsi_set_keys_irrelevant_for_discovery(
503         struct iscsi_param_list *param_list)
504 {
505         struct iscsi_param *param;
506
507         list_for_each_entry(param, &param_list->param_list, p_list) {
508                 if (!strcmp(param->name, MAXCONNECTIONS))
509                         param->state &= ~PSTATE_NEGOTIATE;
510                 else if (!strcmp(param->name, INITIALR2T))
511                         param->state &= ~PSTATE_NEGOTIATE;
512                 else if (!strcmp(param->name, IMMEDIATEDATA))
513                         param->state &= ~PSTATE_NEGOTIATE;
514                 else if (!strcmp(param->name, MAXBURSTLENGTH))
515                         param->state &= ~PSTATE_NEGOTIATE;
516                 else if (!strcmp(param->name, FIRSTBURSTLENGTH))
517                         param->state &= ~PSTATE_NEGOTIATE;
518                 else if (!strcmp(param->name, MAXOUTSTANDINGR2T))
519                         param->state &= ~PSTATE_NEGOTIATE;
520                 else if (!strcmp(param->name, DATAPDUINORDER))
521                         param->state &= ~PSTATE_NEGOTIATE;
522                 else if (!strcmp(param->name, DATASEQUENCEINORDER))
523                         param->state &= ~PSTATE_NEGOTIATE;
524                 else if (!strcmp(param->name, ERRORRECOVERYLEVEL))
525                         param->state &= ~PSTATE_NEGOTIATE;
526                 else if (!strcmp(param->name, DEFAULTTIME2WAIT))
527                         param->state &= ~PSTATE_NEGOTIATE;
528                 else if (!strcmp(param->name, DEFAULTTIME2RETAIN))
529                         param->state &= ~PSTATE_NEGOTIATE;
530                 else if (!strcmp(param->name, IFMARKER))
531                         param->state &= ~PSTATE_NEGOTIATE;
532                 else if (!strcmp(param->name, OFMARKER))
533                         param->state &= ~PSTATE_NEGOTIATE;
534                 else if (!strcmp(param->name, IFMARKINT))
535                         param->state &= ~PSTATE_NEGOTIATE;
536                 else if (!strcmp(param->name, OFMARKINT))
537                         param->state &= ~PSTATE_NEGOTIATE;
538         }
539
540         return 0;
541 }
542
543 int iscsi_copy_param_list(
544         struct iscsi_param_list **dst_param_list,
545         struct iscsi_param_list *src_param_list,
546         int leading)
547 {
548         struct iscsi_param *param = NULL;
549         struct iscsi_param *new_param = NULL;
550         struct iscsi_param_list *param_list = NULL;
551
552         param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL);
553         if (!param_list) {
554                 pr_err("Unable to allocate memory for struct iscsi_param_list.\n");
555                 goto err_out;
556         }
557         INIT_LIST_HEAD(&param_list->param_list);
558         INIT_LIST_HEAD(&param_list->extra_response_list);
559
560         list_for_each_entry(param, &src_param_list->param_list, p_list) {
561                 if (!leading && (param->scope & SCOPE_SESSION_WIDE)) {
562                         if ((strcmp(param->name, "TargetName") != 0) &&
563                             (strcmp(param->name, "InitiatorName") != 0) &&
564                             (strcmp(param->name, "TargetPortalGroupTag") != 0))
565                                 continue;
566                 }
567
568                 new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL);
569                 if (!new_param) {
570                         pr_err("Unable to allocate memory for struct iscsi_param.\n");
571                         goto err_out;
572                 }
573
574                 new_param->name = kstrdup(param->name, GFP_KERNEL);
575                 new_param->value = kstrdup(param->value, GFP_KERNEL);
576                 if (!new_param->value || !new_param->name) {
577                         kfree(new_param->value);
578                         kfree(new_param->name);
579                         kfree(new_param);
580                         pr_err("Unable to allocate memory for parameter name/value.\n");
581                         goto err_out;
582                 }
583
584                 new_param->set_param = param->set_param;
585                 new_param->phase = param->phase;
586                 new_param->scope = param->scope;
587                 new_param->sender = param->sender;
588                 new_param->type = param->type;
589                 new_param->use = param->use;
590                 new_param->type_range = param->type_range;
591
592                 list_add_tail(&new_param->p_list, &param_list->param_list);
593         }
594
595         if (!list_empty(&param_list->param_list)) {
596                 *dst_param_list = param_list;
597         } else {
598                 pr_err("No parameters allocated.\n");
599                 goto err_out;
600         }
601
602         return 0;
603
604 err_out:
605         iscsi_release_param_list(param_list);
606         return -1;
607 }
608
609 static void iscsi_release_extra_responses(struct iscsi_param_list *param_list)
610 {
611         struct iscsi_extra_response *er, *er_tmp;
612
613         list_for_each_entry_safe(er, er_tmp, &param_list->extra_response_list,
614                         er_list) {
615                 list_del(&er->er_list);
616                 kfree(er);
617         }
618 }
619
620 void iscsi_release_param_list(struct iscsi_param_list *param_list)
621 {
622         struct iscsi_param *param, *param_tmp;
623
624         list_for_each_entry_safe(param, param_tmp, &param_list->param_list,
625                         p_list) {
626                 list_del(&param->p_list);
627
628                 kfree(param->name);
629                 param->name = NULL;
630                 kfree(param->value);
631                 param->value = NULL;
632                 kfree(param);
633                 param = NULL;
634         }
635
636         iscsi_release_extra_responses(param_list);
637
638         kfree(param_list);
639 }
640
641 struct iscsi_param *iscsi_find_param_from_key(
642         char *key,
643         struct iscsi_param_list *param_list)
644 {
645         struct iscsi_param *param;
646
647         if (!key || !param_list) {
648                 pr_err("Key or parameter list pointer is NULL.\n");
649                 return NULL;
650         }
651
652         list_for_each_entry(param, &param_list->param_list, p_list) {
653                 if (!strcmp(key, param->name))
654                         return param;
655         }
656
657         pr_err("Unable to locate key \"%s\".\n", key);
658         return NULL;
659 }
660
661 int iscsi_extract_key_value(char *textbuf, char **key, char **value)
662 {
663         *value = strchr(textbuf, '=');
664         if (!*value) {
665                 pr_err("Unable to locate \"=\" seperator for key,"
666                                 " ignoring request.\n");
667                 return -1;
668         }
669
670         *key = textbuf;
671         **value = '\0';
672         *value = *value + 1;
673
674         return 0;
675 }
676
677 int iscsi_update_param_value(struct iscsi_param *param, char *value)
678 {
679         kfree(param->value);
680
681         param->value = kzalloc(strlen(value) + 1, GFP_KERNEL);
682         if (!param->value) {
683                 pr_err("Unable to allocate memory for value.\n");
684                 return -1;
685         }
686
687         memcpy(param->value, value, strlen(value));
688         param->value[strlen(value)] = '\0';
689
690         pr_debug("iSCSI Parameter updated to %s=%s\n",
691                         param->name, param->value);
692         return 0;
693 }
694
695 static int iscsi_add_notunderstood_response(
696         char *key,
697         char *value,
698         struct iscsi_param_list *param_list)
699 {
700         struct iscsi_extra_response *extra_response;
701
702         if (strlen(value) > VALUE_MAXLEN) {
703                 pr_err("Value for notunderstood key \"%s\" exceeds %d,"
704                         " protocol error.\n", key, VALUE_MAXLEN);
705                 return -1;
706         }
707
708         extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL);
709         if (!extra_response) {
710                 pr_err("Unable to allocate memory for"
711                         " struct iscsi_extra_response.\n");
712                 return -1;
713         }
714         INIT_LIST_HEAD(&extra_response->er_list);
715
716         strncpy(extra_response->key, key, strlen(key) + 1);
717         strncpy(extra_response->value, NOTUNDERSTOOD,
718                         strlen(NOTUNDERSTOOD) + 1);
719
720         list_add_tail(&extra_response->er_list,
721                         &param_list->extra_response_list);
722         return 0;
723 }
724
725 static int iscsi_check_for_auth_key(char *key)
726 {
727         /*
728          * RFC 1994
729          */
730         if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") ||
731             !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") ||
732             !strcmp(key, "CHAP_R"))
733                 return 1;
734
735         /*
736          * RFC 2945
737          */
738         if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") ||
739             !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") ||
740             !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") ||
741             !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM"))
742                 return 1;
743
744         return 0;
745 }
746
747 static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param)
748 {
749         if (IS_TYPE_BOOL_AND(param)) {
750                 if (!strcmp(param->value, NO))
751                         SET_PSTATE_REPLY_OPTIONAL(param);
752         } else if (IS_TYPE_BOOL_OR(param)) {
753                 if (!strcmp(param->value, YES))
754                         SET_PSTATE_REPLY_OPTIONAL(param);
755                  /*
756                   * Required for gPXE iSCSI boot client
757                   */
758                 if (!strcmp(param->name, IMMEDIATEDATA))
759                         SET_PSTATE_REPLY_OPTIONAL(param);
760         } else if (IS_TYPE_NUMBER(param)) {
761                 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
762                         SET_PSTATE_REPLY_OPTIONAL(param);
763                 /*
764                  * The GlobalSAN iSCSI Initiator for MacOSX does
765                  * not respond to MaxBurstLength, FirstBurstLength,
766                  * DefaultTime2Wait or DefaultTime2Retain parameter keys.
767                  * So, we set them to 'reply optional' here, and assume the
768                  * the defaults from iscsi_parameters.h if the initiator
769                  * is not RFC compliant and the keys are not negotiated.
770                  */
771                 if (!strcmp(param->name, MAXBURSTLENGTH))
772                         SET_PSTATE_REPLY_OPTIONAL(param);
773                 if (!strcmp(param->name, FIRSTBURSTLENGTH))
774                         SET_PSTATE_REPLY_OPTIONAL(param);
775                 if (!strcmp(param->name, DEFAULTTIME2WAIT))
776                         SET_PSTATE_REPLY_OPTIONAL(param);
777                 if (!strcmp(param->name, DEFAULTTIME2RETAIN))
778                         SET_PSTATE_REPLY_OPTIONAL(param);
779                 /*
780                  * Required for gPXE iSCSI boot client
781                  */
782                 if (!strcmp(param->name, MAXCONNECTIONS))
783                         SET_PSTATE_REPLY_OPTIONAL(param);
784         } else if (IS_PHASE_DECLARATIVE(param))
785                 SET_PSTATE_REPLY_OPTIONAL(param);
786 }
787
788 static int iscsi_check_boolean_value(struct iscsi_param *param, char *value)
789 {
790         if (strcmp(value, YES) && strcmp(value, NO)) {
791                 pr_err("Illegal value for \"%s\", must be either"
792                         " \"%s\" or \"%s\".\n", param->name, YES, NO);
793                 return -1;
794         }
795
796         return 0;
797 }
798
799 static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr)
800 {
801         char *tmpptr;
802         int value = 0;
803
804         value = simple_strtoul(value_ptr, &tmpptr, 0);
805
806 /* #warning FIXME: Fix this */
807 #if 0
808         if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) {
809                 pr_err("Illegal value \"%s\" for \"%s\".\n",
810                         value, param->name);
811                 return -1;
812         }
813 #endif
814         if (IS_TYPERANGE_0_TO_2(param)) {
815                 if ((value < 0) || (value > 2)) {
816                         pr_err("Illegal value for \"%s\", must be"
817                                 " between 0 and 2.\n", param->name);
818                         return -1;
819                 }
820                 return 0;
821         }
822         if (IS_TYPERANGE_0_TO_3600(param)) {
823                 if ((value < 0) || (value > 3600)) {
824                         pr_err("Illegal value for \"%s\", must be"
825                                 " between 0 and 3600.\n", param->name);
826                         return -1;
827                 }
828                 return 0;
829         }
830         if (IS_TYPERANGE_0_TO_32767(param)) {
831                 if ((value < 0) || (value > 32767)) {
832                         pr_err("Illegal value for \"%s\", must be"
833                                 " between 0 and 32767.\n", param->name);
834                         return -1;
835                 }
836                 return 0;
837         }
838         if (IS_TYPERANGE_0_TO_65535(param)) {
839                 if ((value < 0) || (value > 65535)) {
840                         pr_err("Illegal value for \"%s\", must be"
841                                 " between 0 and 65535.\n", param->name);
842                         return -1;
843                 }
844                 return 0;
845         }
846         if (IS_TYPERANGE_1_TO_65535(param)) {
847                 if ((value < 1) || (value > 65535)) {
848                         pr_err("Illegal value for \"%s\", must be"
849                                 " between 1 and 65535.\n", param->name);
850                         return -1;
851                 }
852                 return 0;
853         }
854         if (IS_TYPERANGE_2_TO_3600(param)) {
855                 if ((value < 2) || (value > 3600)) {
856                         pr_err("Illegal value for \"%s\", must be"
857                                 " between 2 and 3600.\n", param->name);
858                         return -1;
859                 }
860                 return 0;
861         }
862         if (IS_TYPERANGE_512_TO_16777215(param)) {
863                 if ((value < 512) || (value > 16777215)) {
864                         pr_err("Illegal value for \"%s\", must be"
865                                 " between 512 and 16777215.\n", param->name);
866                         return -1;
867                 }
868                 return 0;
869         }
870
871         return 0;
872 }
873
874 static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value)
875 {
876         char *left_val_ptr = NULL, *right_val_ptr = NULL;
877         char *tilde_ptr = NULL, *tmp_ptr = NULL;
878         u32 left_val, right_val, local_left_val, local_right_val;
879
880         if (strcmp(param->name, IFMARKINT) &&
881             strcmp(param->name, OFMARKINT)) {
882                 pr_err("Only parameters \"%s\" or \"%s\" may contain a"
883                        " numerical range value.\n", IFMARKINT, OFMARKINT);
884                 return -1;
885         }
886
887         if (IS_PSTATE_PROPOSER(param))
888                 return 0;
889
890         tilde_ptr = strchr(value, '~');
891         if (!tilde_ptr) {
892                 pr_err("Unable to locate numerical range indicator"
893                         " \"~\" for \"%s\".\n", param->name);
894                 return -1;
895         }
896         *tilde_ptr = '\0';
897
898         left_val_ptr = value;
899         right_val_ptr = value + strlen(left_val_ptr) + 1;
900
901         if (iscsi_check_numerical_value(param, left_val_ptr) < 0)
902                 return -1;
903         if (iscsi_check_numerical_value(param, right_val_ptr) < 0)
904                 return -1;
905
906         left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
907         right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
908         *tilde_ptr = '~';
909
910         if (right_val < left_val) {
911                 pr_err("Numerical range for parameter \"%s\" contains"
912                         " a right value which is less than the left.\n",
913                                 param->name);
914                 return -1;
915         }
916
917         /*
918          * For now,  enforce reasonable defaults for [I,O]FMarkInt.
919          */
920         tilde_ptr = strchr(param->value, '~');
921         if (!tilde_ptr) {
922                 pr_err("Unable to locate numerical range indicator"
923                         " \"~\" for \"%s\".\n", param->name);
924                 return -1;
925         }
926         *tilde_ptr = '\0';
927
928         left_val_ptr = param->value;
929         right_val_ptr = param->value + strlen(left_val_ptr) + 1;
930
931         local_left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
932         local_right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
933         *tilde_ptr = '~';
934
935         if (param->set_param) {
936                 if ((left_val < local_left_val) ||
937                     (right_val < local_left_val)) {
938                         pr_err("Passed value range \"%u~%u\" is below"
939                                 " minimum left value \"%u\" for key \"%s\","
940                                 " rejecting.\n", left_val, right_val,
941                                 local_left_val, param->name);
942                         return -1;
943                 }
944         } else {
945                 if ((left_val < local_left_val) &&
946                     (right_val < local_left_val)) {
947                         pr_err("Received value range \"%u~%u\" is"
948                                 " below minimum left value \"%u\" for key"
949                                 " \"%s\", rejecting.\n", left_val, right_val,
950                                 local_left_val, param->name);
951                         SET_PSTATE_REJECT(param);
952                         if (iscsi_update_param_value(param, REJECT) < 0)
953                                 return -1;
954                 }
955         }
956
957         return 0;
958 }
959
960 static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value)
961 {
962         if (IS_PSTATE_PROPOSER(param))
963                 return 0;
964
965         if (IS_TYPERANGE_AUTH_PARAM(param)) {
966                 if (strcmp(value, KRB5) && strcmp(value, SPKM1) &&
967                     strcmp(value, SPKM2) && strcmp(value, SRP) &&
968                     strcmp(value, CHAP) && strcmp(value, NONE)) {
969                         pr_err("Illegal value for \"%s\", must be"
970                                 " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\""
971                                 " or \"%s\".\n", param->name, KRB5,
972                                         SPKM1, SPKM2, SRP, CHAP, NONE);
973                         return -1;
974                 }
975         }
976         if (IS_TYPERANGE_DIGEST_PARAM(param)) {
977                 if (strcmp(value, CRC32C) && strcmp(value, NONE)) {
978                         pr_err("Illegal value for \"%s\", must be"
979                                 " \"%s\" or \"%s\".\n", param->name,
980                                         CRC32C, NONE);
981                         return -1;
982                 }
983         }
984         if (IS_TYPERANGE_SESSIONTYPE(param)) {
985                 if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) {
986                         pr_err("Illegal value for \"%s\", must be"
987                                 " \"%s\" or \"%s\".\n", param->name,
988                                         DISCOVERY, NORMAL);
989                         return -1;
990                 }
991         }
992
993         return 0;
994 }
995
996 /*
997  *      This function is used to pick a value range number,  currently just
998  *      returns the lesser of both right values.
999  */
1000 static char *iscsi_get_value_from_number_range(
1001         struct iscsi_param *param,
1002         char *value)
1003 {
1004         char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL;
1005         u32 acceptor_right_value, proposer_right_value;
1006
1007         tilde_ptr1 = strchr(value, '~');
1008         if (!tilde_ptr1)
1009                 return NULL;
1010         *tilde_ptr1++ = '\0';
1011         proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0);
1012
1013         tilde_ptr2 = strchr(param->value, '~');
1014         if (!tilde_ptr2)
1015                 return NULL;
1016         *tilde_ptr2++ = '\0';
1017         acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0);
1018
1019         return (acceptor_right_value >= proposer_right_value) ?
1020                 tilde_ptr1 : tilde_ptr2;
1021 }
1022
1023 static char *iscsi_check_valuelist_for_support(
1024         struct iscsi_param *param,
1025         char *value)
1026 {
1027         char *tmp1 = NULL, *tmp2 = NULL;
1028         char *acceptor_values = NULL, *proposer_values = NULL;
1029
1030         acceptor_values = param->value;
1031         proposer_values = value;
1032
1033         do {
1034                 if (!proposer_values)
1035                         return NULL;
1036                 tmp1 = strchr(proposer_values, ',');
1037                 if (tmp1)
1038                         *tmp1 = '\0';
1039                 acceptor_values = param->value;
1040                 do {
1041                         if (!acceptor_values) {
1042                                 if (tmp1)
1043                                         *tmp1 = ',';
1044                                 return NULL;
1045                         }
1046                         tmp2 = strchr(acceptor_values, ',');
1047                         if (tmp2)
1048                                 *tmp2 = '\0';
1049                         if (!acceptor_values || !proposer_values) {
1050                                 if (tmp1)
1051                                         *tmp1 = ',';
1052                                 if (tmp2)
1053                                         *tmp2 = ',';
1054                                 return NULL;
1055                         }
1056                         if (!strcmp(acceptor_values, proposer_values)) {
1057                                 if (tmp2)
1058                                         *tmp2 = ',';
1059                                 goto out;
1060                         }
1061                         if (tmp2)
1062                                 *tmp2++ = ',';
1063
1064                         acceptor_values = tmp2;
1065                         if (!acceptor_values)
1066                                 break;
1067                 } while (acceptor_values);
1068                 if (tmp1)
1069                         *tmp1++ = ',';
1070                 proposer_values = tmp1;
1071         } while (proposer_values);
1072
1073 out:
1074         return proposer_values;
1075 }
1076
1077 static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value)
1078 {
1079         u8 acceptor_boolean_value = 0, proposer_boolean_value = 0;
1080         char *negoitated_value = NULL;
1081
1082         if (IS_PSTATE_ACCEPTOR(param)) {
1083                 pr_err("Received key \"%s\" twice, protocol error.\n",
1084                                 param->name);
1085                 return -1;
1086         }
1087
1088         if (IS_PSTATE_REJECT(param))
1089                 return 0;
1090
1091         if (IS_TYPE_BOOL_AND(param)) {
1092                 if (!strcmp(value, YES))
1093                         proposer_boolean_value = 1;
1094                 if (!strcmp(param->value, YES))
1095                         acceptor_boolean_value = 1;
1096                 if (acceptor_boolean_value && proposer_boolean_value)
1097                         do {} while (0);
1098                 else {
1099                         if (iscsi_update_param_value(param, NO) < 0)
1100                                 return -1;
1101                         if (!proposer_boolean_value)
1102                                 SET_PSTATE_REPLY_OPTIONAL(param);
1103                 }
1104         } else if (IS_TYPE_BOOL_OR(param)) {
1105                 if (!strcmp(value, YES))
1106                         proposer_boolean_value = 1;
1107                 if (!strcmp(param->value, YES))
1108                         acceptor_boolean_value = 1;
1109                 if (acceptor_boolean_value || proposer_boolean_value) {
1110                         if (iscsi_update_param_value(param, YES) < 0)
1111                                 return -1;
1112                         if (proposer_boolean_value)
1113                                 SET_PSTATE_REPLY_OPTIONAL(param);
1114                 }
1115         } else if (IS_TYPE_NUMBER(param)) {
1116                 char *tmpptr, buf[10];
1117                 u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0);
1118                 u32 proposer_value = simple_strtoul(value, &tmpptr, 0);
1119
1120                 memset(buf, 0, 10);
1121
1122                 if (!strcmp(param->name, MAXCONNECTIONS) ||
1123                     !strcmp(param->name, MAXBURSTLENGTH) ||
1124                     !strcmp(param->name, FIRSTBURSTLENGTH) ||
1125                     !strcmp(param->name, MAXOUTSTANDINGR2T) ||
1126                     !strcmp(param->name, DEFAULTTIME2RETAIN) ||
1127                     !strcmp(param->name, ERRORRECOVERYLEVEL)) {
1128                         if (proposer_value > acceptor_value) {
1129                                 sprintf(buf, "%u", acceptor_value);
1130                                 if (iscsi_update_param_value(param,
1131                                                 &buf[0]) < 0)
1132                                         return -1;
1133                         } else {
1134                                 if (iscsi_update_param_value(param, value) < 0)
1135                                         return -1;
1136                         }
1137                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1138                         if (acceptor_value > proposer_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 {
1148                         if (iscsi_update_param_value(param, value) < 0)
1149                                 return -1;
1150                 }
1151
1152                 if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH))
1153                         SET_PSTATE_REPLY_OPTIONAL(param);
1154         } else if (IS_TYPE_NUMBER_RANGE(param)) {
1155                 negoitated_value = iscsi_get_value_from_number_range(
1156                                         param, value);
1157                 if (!negoitated_value)
1158                         return -1;
1159                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1160                         return -1;
1161         } else if (IS_TYPE_VALUE_LIST(param)) {
1162                 negoitated_value = iscsi_check_valuelist_for_support(
1163                                         param, value);
1164                 if (!negoitated_value) {
1165                         pr_err("Proposer's value list \"%s\" contains"
1166                                 " no valid values from Acceptor's value list"
1167                                 " \"%s\".\n", value, param->value);
1168                         return -1;
1169                 }
1170                 if (iscsi_update_param_value(param, negoitated_value) < 0)
1171                         return -1;
1172         } else if (IS_PHASE_DECLARATIVE(param)) {
1173                 if (iscsi_update_param_value(param, value) < 0)
1174                         return -1;
1175                 SET_PSTATE_REPLY_OPTIONAL(param);
1176         }
1177
1178         return 0;
1179 }
1180
1181 static int iscsi_check_proposer_state(struct iscsi_param *param, char *value)
1182 {
1183         if (IS_PSTATE_RESPONSE_GOT(param)) {
1184                 pr_err("Received key \"%s\" twice, protocol error.\n",
1185                                 param->name);
1186                 return -1;
1187         }
1188
1189         if (IS_TYPE_NUMBER_RANGE(param)) {
1190                 u32 left_val = 0, right_val = 0, recieved_value = 0;
1191                 char *left_val_ptr = NULL, *right_val_ptr = NULL;
1192                 char *tilde_ptr = NULL, *tmp_ptr = NULL;
1193
1194                 if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) {
1195                         if (iscsi_update_param_value(param, value) < 0)
1196                                 return -1;
1197                         return 0;
1198                 }
1199
1200                 tilde_ptr = strchr(value, '~');
1201                 if (tilde_ptr) {
1202                         pr_err("Illegal \"~\" in response for \"%s\".\n",
1203                                         param->name);
1204                         return -1;
1205                 }
1206                 tilde_ptr = strchr(param->value, '~');
1207                 if (!tilde_ptr) {
1208                         pr_err("Unable to locate numerical range"
1209                                 " indicator \"~\" for \"%s\".\n", param->name);
1210                         return -1;
1211                 }
1212                 *tilde_ptr = '\0';
1213
1214                 left_val_ptr = param->value;
1215                 right_val_ptr = param->value + strlen(left_val_ptr) + 1;
1216                 left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0);
1217                 right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0);
1218                 recieved_value = simple_strtoul(value, &tmp_ptr, 0);
1219
1220                 *tilde_ptr = '~';
1221
1222                 if ((recieved_value < left_val) ||
1223                     (recieved_value > right_val)) {
1224                         pr_err("Illegal response \"%s=%u\", value must"
1225                                 " be between %u and %u.\n", param->name,
1226                                 recieved_value, left_val, right_val);
1227                         return -1;
1228                 }
1229         } else if (IS_TYPE_VALUE_LIST(param)) {
1230                 char *comma_ptr = NULL, *tmp_ptr = NULL;
1231
1232                 comma_ptr = strchr(value, ',');
1233                 if (comma_ptr) {
1234                         pr_err("Illegal \",\" in response for \"%s\".\n",
1235                                         param->name);
1236                         return -1;
1237                 }
1238
1239                 tmp_ptr = iscsi_check_valuelist_for_support(param, value);
1240                 if (!tmp_ptr)
1241                         return -1;
1242         }
1243
1244         if (iscsi_update_param_value(param, value) < 0)
1245                 return -1;
1246
1247         return 0;
1248 }
1249
1250 static int iscsi_check_value(struct iscsi_param *param, char *value)
1251 {
1252         char *comma_ptr = NULL;
1253
1254         if (!strcmp(value, REJECT)) {
1255                 if (!strcmp(param->name, IFMARKINT) ||
1256                     !strcmp(param->name, OFMARKINT)) {
1257                         /*
1258                          * Reject is not fatal for [I,O]FMarkInt,  and causes
1259                          * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2)
1260                          */
1261                         SET_PSTATE_REJECT(param);
1262                         return 0;
1263                 }
1264                 pr_err("Received %s=%s\n", param->name, value);
1265                 return -1;
1266         }
1267         if (!strcmp(value, IRRELEVANT)) {
1268                 pr_debug("Received %s=%s\n", param->name, value);
1269                 SET_PSTATE_IRRELEVANT(param);
1270                 return 0;
1271         }
1272         if (!strcmp(value, NOTUNDERSTOOD)) {
1273                 if (!IS_PSTATE_PROPOSER(param)) {
1274                         pr_err("Received illegal offer %s=%s\n",
1275                                 param->name, value);
1276                         return -1;
1277                 }
1278
1279 /* #warning FIXME: Add check for X-ExtensionKey here */
1280                 pr_err("Standard iSCSI key \"%s\" cannot be answered"
1281                         " with \"%s\", protocol error.\n", param->name, value);
1282                 return -1;
1283         }
1284
1285         do {
1286                 comma_ptr = NULL;
1287                 comma_ptr = strchr(value, ',');
1288
1289                 if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) {
1290                         pr_err("Detected value seperator \",\", but"
1291                                 " key \"%s\" does not allow a value list,"
1292                                 " protocol error.\n", param->name);
1293                         return -1;
1294                 }
1295                 if (comma_ptr)
1296                         *comma_ptr = '\0';
1297
1298                 if (strlen(value) > VALUE_MAXLEN) {
1299                         pr_err("Value for key \"%s\" exceeds %d,"
1300                                 " protocol error.\n", param->name,
1301                                 VALUE_MAXLEN);
1302                         return -1;
1303                 }
1304
1305                 if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) {
1306                         if (iscsi_check_boolean_value(param, value) < 0)
1307                                 return -1;
1308                 } else if (IS_TYPE_NUMBER(param)) {
1309                         if (iscsi_check_numerical_value(param, value) < 0)
1310                                 return -1;
1311                 } else if (IS_TYPE_NUMBER_RANGE(param)) {
1312                         if (iscsi_check_numerical_range_value(param, value) < 0)
1313                                 return -1;
1314                 } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) {
1315                         if (iscsi_check_string_or_list_value(param, value) < 0)
1316                                 return -1;
1317                 } else {
1318                         pr_err("Huh? 0x%02x\n", param->type);
1319                         return -1;
1320                 }
1321
1322                 if (comma_ptr)
1323                         *comma_ptr++ = ',';
1324
1325                 value = comma_ptr;
1326         } while (value);
1327
1328         return 0;
1329 }
1330
1331 static struct iscsi_param *__iscsi_check_key(
1332         char *key,
1333         int sender,
1334         struct iscsi_param_list *param_list)
1335 {
1336         struct iscsi_param *param;
1337
1338         if (strlen(key) > KEY_MAXLEN) {
1339                 pr_err("Length of key name \"%s\" exceeds %d.\n",
1340                         key, KEY_MAXLEN);
1341                 return NULL;
1342         }
1343
1344         param = iscsi_find_param_from_key(key, param_list);
1345         if (!param)
1346                 return NULL;
1347
1348         if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) {
1349                 pr_err("Key \"%s\" may not be sent to %s,"
1350                         " protocol error.\n", param->name,
1351                         (sender & SENDER_RECEIVER) ? "target" : "initiator");
1352                 return NULL;
1353         }
1354
1355         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1356                 pr_err("Key \"%s\" may not be sent to %s,"
1357                         " protocol error.\n", param->name,
1358                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1359                 return NULL;
1360         }
1361
1362         return param;
1363 }
1364
1365 static struct iscsi_param *iscsi_check_key(
1366         char *key,
1367         int phase,
1368         int sender,
1369         struct iscsi_param_list *param_list)
1370 {
1371         struct iscsi_param *param;
1372         /*
1373          * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1)
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         if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) {
1392                 pr_err("Key \"%s\" may not be sent to %s,"
1393                                 " protocol error.\n", param->name,
1394                         (sender & SENDER_RECEIVER) ? "initiator" : "target");
1395                 return NULL;
1396         }
1397
1398         if (IS_PSTATE_ACCEPTOR(param)) {
1399                 pr_err("Key \"%s\" received twice, protocol error.\n",
1400                                 key);
1401                 return NULL;
1402         }
1403
1404         if (!phase)
1405                 return param;
1406
1407         if (!(param->phase & phase)) {
1408                 pr_err("Key \"%s\" may not be negotiated during ",
1409                                 param->name);
1410                 switch (phase) {
1411                 case PHASE_SECURITY:
1412                         pr_debug("Security phase.\n");
1413                         break;
1414                 case PHASE_OPERATIONAL:
1415                         pr_debug("Operational phase.\n");
1416                 default:
1417                         pr_debug("Unknown phase.\n");
1418                 }
1419                 return NULL;
1420         }
1421
1422         return param;
1423 }
1424
1425 static int iscsi_enforce_integrity_rules(
1426         u8 phase,
1427         struct iscsi_param_list *param_list)
1428 {
1429         char *tmpptr;
1430         u8 DataSequenceInOrder = 0;
1431         u8 ErrorRecoveryLevel = 0, SessionType = 0;
1432         u8 IFMarker = 0, OFMarker = 0;
1433         u8 IFMarkInt_Reject = 0, OFMarkInt_Reject = 0;
1434         u32 FirstBurstLength = 0, MaxBurstLength = 0;
1435         struct iscsi_param *param = NULL;
1436
1437         list_for_each_entry(param, &param_list->param_list, p_list) {
1438                 if (!(param->phase & phase))
1439                         continue;
1440                 if (!strcmp(param->name, SESSIONTYPE))
1441                         if (!strcmp(param->value, NORMAL))
1442                                 SessionType = 1;
1443                 if (!strcmp(param->name, ERRORRECOVERYLEVEL))
1444                         ErrorRecoveryLevel = simple_strtoul(param->value,
1445                                         &tmpptr, 0);
1446                 if (!strcmp(param->name, DATASEQUENCEINORDER))
1447                         if (!strcmp(param->value, YES))
1448                                 DataSequenceInOrder = 1;
1449                 if (!strcmp(param->name, MAXBURSTLENGTH))
1450                         MaxBurstLength = simple_strtoul(param->value,
1451                                         &tmpptr, 0);
1452                 if (!strcmp(param->name, IFMARKER))
1453                         if (!strcmp(param->value, YES))
1454                                 IFMarker = 1;
1455                 if (!strcmp(param->name, OFMARKER))
1456                         if (!strcmp(param->value, YES))
1457                                 OFMarker = 1;
1458                 if (!strcmp(param->name, IFMARKINT))
1459                         if (!strcmp(param->value, REJECT))
1460                                 IFMarkInt_Reject = 1;
1461                 if (!strcmp(param->name, OFMARKINT))
1462                         if (!strcmp(param->value, REJECT))
1463                                 OFMarkInt_Reject = 1;
1464         }
1465
1466         list_for_each_entry(param, &param_list->param_list, p_list) {
1467                 if (!(param->phase & phase))
1468                         continue;
1469                 if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) &&
1470                      (strcmp(param->name, IFMARKER) &&
1471                       strcmp(param->name, OFMARKER) &&
1472                       strcmp(param->name, IFMARKINT) &&
1473                       strcmp(param->name, OFMARKINT))))
1474                         continue;
1475                 if (!strcmp(param->name, MAXOUTSTANDINGR2T) &&
1476                     DataSequenceInOrder && (ErrorRecoveryLevel > 0)) {
1477                         if (strcmp(param->value, "1")) {
1478                                 if (iscsi_update_param_value(param, "1") < 0)
1479                                         return -1;
1480                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1481                                         param->name, param->value);
1482                         }
1483                 }
1484                 if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) {
1485                         if (strcmp(param->value, "1")) {
1486                                 if (iscsi_update_param_value(param, "1") < 0)
1487                                         return -1;
1488                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1489                                         param->name, param->value);
1490                         }
1491                 }
1492                 if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1493                         FirstBurstLength = simple_strtoul(param->value,
1494                                         &tmpptr, 0);
1495                         if (FirstBurstLength > MaxBurstLength) {
1496                                 char tmpbuf[10];
1497                                 memset(tmpbuf, 0, 10);
1498                                 sprintf(tmpbuf, "%u", MaxBurstLength);
1499                                 if (iscsi_update_param_value(param, tmpbuf))
1500                                         return -1;
1501                                 pr_debug("Reset \"%s\" to \"%s\".\n",
1502                                         param->name, param->value);
1503                         }
1504                 }
1505                 if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) {
1506                         if (iscsi_update_param_value(param, NO) < 0)
1507                                 return -1;
1508                         IFMarker = 0;
1509                         pr_debug("Reset \"%s\" to \"%s\".\n",
1510                                         param->name, param->value);
1511                 }
1512                 if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) {
1513                         if (iscsi_update_param_value(param, NO) < 0)
1514                                 return -1;
1515                         OFMarker = 0;
1516                         pr_debug("Reset \"%s\" to \"%s\".\n",
1517                                          param->name, param->value);
1518                 }
1519                 if (!strcmp(param->name, IFMARKINT) && !IFMarker) {
1520                         if (!strcmp(param->value, REJECT))
1521                                 continue;
1522                         param->state &= ~PSTATE_NEGOTIATE;
1523                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1524                                 return -1;
1525                         pr_debug("Reset \"%s\" to \"%s\".\n",
1526                                         param->name, param->value);
1527                 }
1528                 if (!strcmp(param->name, OFMARKINT) && !OFMarker) {
1529                         if (!strcmp(param->value, REJECT))
1530                                 continue;
1531                         param->state &= ~PSTATE_NEGOTIATE;
1532                         if (iscsi_update_param_value(param, IRRELEVANT) < 0)
1533                                 return -1;
1534                         pr_debug("Reset \"%s\" to \"%s\".\n",
1535                                         param->name, param->value);
1536                 }
1537         }
1538
1539         return 0;
1540 }
1541
1542 int iscsi_decode_text_input(
1543         u8 phase,
1544         u8 sender,
1545         char *textbuf,
1546         u32 length,
1547         struct iscsi_param_list *param_list)
1548 {
1549         char *tmpbuf, *start = NULL, *end = NULL;
1550
1551         tmpbuf = kzalloc(length + 1, GFP_KERNEL);
1552         if (!tmpbuf) {
1553                 pr_err("Unable to allocate memory for tmpbuf.\n");
1554                 return -1;
1555         }
1556
1557         memcpy(tmpbuf, textbuf, length);
1558         tmpbuf[length] = '\0';
1559         start = tmpbuf;
1560         end = (start + length);
1561
1562         while (start < end) {
1563                 char *key, *value;
1564                 struct iscsi_param *param;
1565
1566                 if (iscsi_extract_key_value(start, &key, &value) < 0) {
1567                         kfree(tmpbuf);
1568                         return -1;
1569                 }
1570
1571                 pr_debug("Got key: %s=%s\n", key, value);
1572
1573                 if (phase & PHASE_SECURITY) {
1574                         if (iscsi_check_for_auth_key(key) > 0) {
1575                                 char *tmpptr = key + strlen(key);
1576                                 *tmpptr = '=';
1577                                 kfree(tmpbuf);
1578                                 return 1;
1579                         }
1580                 }
1581
1582                 param = iscsi_check_key(key, phase, sender, param_list);
1583                 if (!param) {
1584                         if (iscsi_add_notunderstood_response(key,
1585                                         value, param_list) < 0) {
1586                                 kfree(tmpbuf);
1587                                 return -1;
1588                         }
1589                         start += strlen(key) + strlen(value) + 2;
1590                         continue;
1591                 }
1592                 if (iscsi_check_value(param, value) < 0) {
1593                         kfree(tmpbuf);
1594                         return -1;
1595                 }
1596
1597                 start += strlen(key) + strlen(value) + 2;
1598
1599                 if (IS_PSTATE_PROPOSER(param)) {
1600                         if (iscsi_check_proposer_state(param, value) < 0) {
1601                                 kfree(tmpbuf);
1602                                 return -1;
1603                         }
1604                         SET_PSTATE_RESPONSE_GOT(param);
1605                 } else {
1606                         if (iscsi_check_acceptor_state(param, value) < 0) {
1607                                 kfree(tmpbuf);
1608                                 return -1;
1609                         }
1610                         SET_PSTATE_ACCEPTOR(param);
1611                 }
1612         }
1613
1614         kfree(tmpbuf);
1615         return 0;
1616 }
1617
1618 int iscsi_encode_text_output(
1619         u8 phase,
1620         u8 sender,
1621         char *textbuf,
1622         u32 *length,
1623         struct iscsi_param_list *param_list)
1624 {
1625         char *output_buf = NULL;
1626         struct iscsi_extra_response *er;
1627         struct iscsi_param *param;
1628
1629         output_buf = textbuf + *length;
1630
1631         if (iscsi_enforce_integrity_rules(phase, param_list) < 0)
1632                 return -1;
1633
1634         list_for_each_entry(param, &param_list->param_list, p_list) {
1635                 if (!(param->sender & sender))
1636                         continue;
1637                 if (IS_PSTATE_ACCEPTOR(param) &&
1638                     !IS_PSTATE_RESPONSE_SENT(param) &&
1639                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1640                     (param->phase & phase)) {
1641                         *length += sprintf(output_buf, "%s=%s",
1642                                 param->name, param->value);
1643                         *length += 1;
1644                         output_buf = textbuf + *length;
1645                         SET_PSTATE_RESPONSE_SENT(param);
1646                         pr_debug("Sending key: %s=%s\n",
1647                                 param->name, param->value);
1648                         continue;
1649                 }
1650                 if (IS_PSTATE_NEGOTIATE(param) &&
1651                     !IS_PSTATE_ACCEPTOR(param) &&
1652                     !IS_PSTATE_PROPOSER(param) &&
1653                     (param->phase & phase)) {
1654                         *length += sprintf(output_buf, "%s=%s",
1655                                 param->name, param->value);
1656                         *length += 1;
1657                         output_buf = textbuf + *length;
1658                         SET_PSTATE_PROPOSER(param);
1659                         iscsi_check_proposer_for_optional_reply(param);
1660                         pr_debug("Sending key: %s=%s\n",
1661                                 param->name, param->value);
1662                 }
1663         }
1664
1665         list_for_each_entry(er, &param_list->extra_response_list, er_list) {
1666                 *length += sprintf(output_buf, "%s=%s", er->key, er->value);
1667                 *length += 1;
1668                 output_buf = textbuf + *length;
1669                 pr_debug("Sending key: %s=%s\n", er->key, er->value);
1670         }
1671         iscsi_release_extra_responses(param_list);
1672
1673         return 0;
1674 }
1675
1676 int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list)
1677 {
1678         int ret = 0;
1679         struct iscsi_param *param;
1680
1681         list_for_each_entry(param, &param_list->param_list, p_list) {
1682                 if (IS_PSTATE_NEGOTIATE(param) &&
1683                     IS_PSTATE_PROPOSER(param) &&
1684                     !IS_PSTATE_RESPONSE_GOT(param) &&
1685                     !IS_PSTATE_REPLY_OPTIONAL(param) &&
1686                     !IS_PHASE_DECLARATIVE(param)) {
1687                         pr_err("No response for proposed key \"%s\".\n",
1688                                         param->name);
1689                         ret = -1;
1690                 }
1691         }
1692
1693         return ret;
1694 }
1695
1696 int iscsi_change_param_value(
1697         char *keyvalue,
1698         struct iscsi_param_list *param_list,
1699         int check_key)
1700 {
1701         char *key = NULL, *value = NULL;
1702         struct iscsi_param *param;
1703         int sender = 0;
1704
1705         if (iscsi_extract_key_value(keyvalue, &key, &value) < 0)
1706                 return -1;
1707
1708         if (!check_key) {
1709                 param = __iscsi_check_key(keyvalue, sender, param_list);
1710                 if (!param)
1711                         return -1;
1712         } else {
1713                 param = iscsi_check_key(keyvalue, 0, sender, param_list);
1714                 if (!param)
1715                         return -1;
1716
1717                 param->set_param = 1;
1718                 if (iscsi_check_value(param, value) < 0) {
1719                         param->set_param = 0;
1720                         return -1;
1721                 }
1722                 param->set_param = 0;
1723         }
1724
1725         if (iscsi_update_param_value(param, value) < 0)
1726                 return -1;
1727
1728         return 0;
1729 }
1730
1731 void iscsi_set_connection_parameters(
1732         struct iscsi_conn_ops *ops,
1733         struct iscsi_param_list *param_list)
1734 {
1735         char *tmpptr;
1736         struct iscsi_param *param;
1737
1738         pr_debug("---------------------------------------------------"
1739                         "---------------\n");
1740         list_for_each_entry(param, &param_list->param_list, p_list) {
1741                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1742                         continue;
1743                 if (!strcmp(param->name, AUTHMETHOD)) {
1744                         pr_debug("AuthMethod:                   %s\n",
1745                                 param->value);
1746                 } else if (!strcmp(param->name, HEADERDIGEST)) {
1747                         ops->HeaderDigest = !strcmp(param->value, CRC32C);
1748                         pr_debug("HeaderDigest:                 %s\n",
1749                                 param->value);
1750                 } else if (!strcmp(param->name, DATADIGEST)) {
1751                         ops->DataDigest = !strcmp(param->value, CRC32C);
1752                         pr_debug("DataDigest:                   %s\n",
1753                                 param->value);
1754                 } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) {
1755                         ops->MaxRecvDataSegmentLength =
1756                                 simple_strtoul(param->value, &tmpptr, 0);
1757                         pr_debug("MaxRecvDataSegmentLength:     %s\n",
1758                                 param->value);
1759                 } else if (!strcmp(param->name, OFMARKER)) {
1760                         ops->OFMarker = !strcmp(param->value, YES);
1761                         pr_debug("OFMarker:                     %s\n",
1762                                 param->value);
1763                 } else if (!strcmp(param->name, IFMARKER)) {
1764                         ops->IFMarker = !strcmp(param->value, YES);
1765                         pr_debug("IFMarker:                     %s\n",
1766                                 param->value);
1767                 } else if (!strcmp(param->name, OFMARKINT)) {
1768                         ops->OFMarkInt =
1769                                 simple_strtoul(param->value, &tmpptr, 0);
1770                         pr_debug("OFMarkInt:                    %s\n",
1771                                 param->value);
1772                 } else if (!strcmp(param->name, IFMARKINT)) {
1773                         ops->IFMarkInt =
1774                                 simple_strtoul(param->value, &tmpptr, 0);
1775                         pr_debug("IFMarkInt:                    %s\n",
1776                                 param->value);
1777                 }
1778         }
1779         pr_debug("----------------------------------------------------"
1780                         "--------------\n");
1781 }
1782
1783 void iscsi_set_session_parameters(
1784         struct iscsi_sess_ops *ops,
1785         struct iscsi_param_list *param_list,
1786         int leading)
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                 if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param))
1795                         continue;
1796                 if (!strcmp(param->name, INITIATORNAME)) {
1797                         if (!param->value)
1798                                 continue;
1799                         if (leading)
1800                                 snprintf(ops->InitiatorName,
1801                                                 sizeof(ops->InitiatorName),
1802                                                 "%s", param->value);
1803                         pr_debug("InitiatorName:                %s\n",
1804                                 param->value);
1805                 } else if (!strcmp(param->name, INITIATORALIAS)) {
1806                         if (!param->value)
1807                                 continue;
1808                         snprintf(ops->InitiatorAlias,
1809                                                 sizeof(ops->InitiatorAlias),
1810                                                 "%s", param->value);
1811                         pr_debug("InitiatorAlias:               %s\n",
1812                                 param->value);
1813                 } else if (!strcmp(param->name, TARGETNAME)) {
1814                         if (!param->value)
1815                                 continue;
1816                         if (leading)
1817                                 snprintf(ops->TargetName,
1818                                                 sizeof(ops->TargetName),
1819                                                 "%s", param->value);
1820                         pr_debug("TargetName:                   %s\n",
1821                                 param->value);
1822                 } else if (!strcmp(param->name, TARGETALIAS)) {
1823                         if (!param->value)
1824                                 continue;
1825                         snprintf(ops->TargetAlias, sizeof(ops->TargetAlias),
1826                                         "%s", param->value);
1827                         pr_debug("TargetAlias:                  %s\n",
1828                                 param->value);
1829                 } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) {
1830                         ops->TargetPortalGroupTag =
1831                                 simple_strtoul(param->value, &tmpptr, 0);
1832                         pr_debug("TargetPortalGroupTag:         %s\n",
1833                                 param->value);
1834                 } else if (!strcmp(param->name, MAXCONNECTIONS)) {
1835                         ops->MaxConnections =
1836                                 simple_strtoul(param->value, &tmpptr, 0);
1837                         pr_debug("MaxConnections:               %s\n",
1838                                 param->value);
1839                 } else if (!strcmp(param->name, INITIALR2T)) {
1840                         ops->InitialR2T = !strcmp(param->value, YES);
1841                          pr_debug("InitialR2T:                   %s\n",
1842                                 param->value);
1843                 } else if (!strcmp(param->name, IMMEDIATEDATA)) {
1844                         ops->ImmediateData = !strcmp(param->value, YES);
1845                         pr_debug("ImmediateData:                %s\n",
1846                                 param->value);
1847                 } else if (!strcmp(param->name, MAXBURSTLENGTH)) {
1848                         ops->MaxBurstLength =
1849                                 simple_strtoul(param->value, &tmpptr, 0);
1850                         pr_debug("MaxBurstLength:               %s\n",
1851                                 param->value);
1852                 } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) {
1853                         ops->FirstBurstLength =
1854                                 simple_strtoul(param->value, &tmpptr, 0);
1855                         pr_debug("FirstBurstLength:             %s\n",
1856                                 param->value);
1857                 } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) {
1858                         ops->DefaultTime2Wait =
1859                                 simple_strtoul(param->value, &tmpptr, 0);
1860                         pr_debug("DefaultTime2Wait:             %s\n",
1861                                 param->value);
1862                 } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) {
1863                         ops->DefaultTime2Retain =
1864                                 simple_strtoul(param->value, &tmpptr, 0);
1865                         pr_debug("DefaultTime2Retain:           %s\n",
1866                                 param->value);
1867                 } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) {
1868                         ops->MaxOutstandingR2T =
1869                                 simple_strtoul(param->value, &tmpptr, 0);
1870                         pr_debug("MaxOutstandingR2T:            %s\n",
1871                                 param->value);
1872                 } else if (!strcmp(param->name, DATAPDUINORDER)) {
1873                         ops->DataPDUInOrder = !strcmp(param->value, YES);
1874                         pr_debug("DataPDUInOrder:               %s\n",
1875                                 param->value);
1876                 } else if (!strcmp(param->name, DATASEQUENCEINORDER)) {
1877                         ops->DataSequenceInOrder = !strcmp(param->value, YES);
1878                         pr_debug("DataSequenceInOrder:          %s\n",
1879                                 param->value);
1880                 } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) {
1881                         ops->ErrorRecoveryLevel =
1882                                 simple_strtoul(param->value, &tmpptr, 0);
1883                         pr_debug("ErrorRecoveryLevel:           %s\n",
1884                                 param->value);
1885                 } else if (!strcmp(param->name, SESSIONTYPE)) {
1886                         ops->SessionType = !strcmp(param->value, DISCOVERY);
1887                         pr_debug("SessionType:                  %s\n",
1888                                 param->value);
1889                 }
1890         }
1891         pr_debug("----------------------------------------------------"
1892                         "--------------\n");
1893
1894 }