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e48354ce NB |
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 | { | |
baa4d64b | 62 | int length, tx_sent, iov_cnt = 1; |
e48354ce NB |
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; | |
baa4d64b NB |
70 | |
71 | if (text_buf && text_length) { | |
72 | iov[1].iov_len = text_length; | |
73 | iov[1].iov_base = text_buf; | |
74 | iov_cnt++; | |
75 | } | |
e48354ce NB |
76 | |
77 | /* | |
78 | * Initial Marker-less Interval. | |
79 | * Add the values regardless of IFMarker/OFMarker, considering | |
80 | * it may not be negoitated yet. | |
81 | */ | |
82 | conn->if_marker += length; | |
83 | ||
baa4d64b | 84 | tx_sent = tx_data(conn, &iov[0], iov_cnt, length); |
e48354ce NB |
85 | if (tx_sent != length) { |
86 | pr_err("tx_data returned %d, expecting %d.\n", | |
87 | tx_sent, length); | |
88 | return -1; | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | void iscsi_dump_conn_ops(struct iscsi_conn_ops *conn_ops) | |
95 | { | |
96 | pr_debug("HeaderDigest: %s\n", (conn_ops->HeaderDigest) ? | |
97 | "CRC32C" : "None"); | |
98 | pr_debug("DataDigest: %s\n", (conn_ops->DataDigest) ? | |
99 | "CRC32C" : "None"); | |
100 | pr_debug("MaxRecvDataSegmentLength: %u\n", | |
101 | conn_ops->MaxRecvDataSegmentLength); | |
102 | pr_debug("OFMarker: %s\n", (conn_ops->OFMarker) ? "Yes" : "No"); | |
103 | pr_debug("IFMarker: %s\n", (conn_ops->IFMarker) ? "Yes" : "No"); | |
104 | if (conn_ops->OFMarker) | |
105 | pr_debug("OFMarkInt: %u\n", conn_ops->OFMarkInt); | |
106 | if (conn_ops->IFMarker) | |
107 | pr_debug("IFMarkInt: %u\n", conn_ops->IFMarkInt); | |
108 | } | |
109 | ||
110 | void iscsi_dump_sess_ops(struct iscsi_sess_ops *sess_ops) | |
111 | { | |
112 | pr_debug("InitiatorName: %s\n", sess_ops->InitiatorName); | |
113 | pr_debug("InitiatorAlias: %s\n", sess_ops->InitiatorAlias); | |
114 | pr_debug("TargetName: %s\n", sess_ops->TargetName); | |
115 | pr_debug("TargetAlias: %s\n", sess_ops->TargetAlias); | |
116 | pr_debug("TargetPortalGroupTag: %hu\n", | |
117 | sess_ops->TargetPortalGroupTag); | |
118 | pr_debug("MaxConnections: %hu\n", sess_ops->MaxConnections); | |
119 | pr_debug("InitialR2T: %s\n", | |
120 | (sess_ops->InitialR2T) ? "Yes" : "No"); | |
121 | pr_debug("ImmediateData: %s\n", (sess_ops->ImmediateData) ? | |
122 | "Yes" : "No"); | |
123 | pr_debug("MaxBurstLength: %u\n", sess_ops->MaxBurstLength); | |
124 | pr_debug("FirstBurstLength: %u\n", sess_ops->FirstBurstLength); | |
125 | pr_debug("DefaultTime2Wait: %hu\n", sess_ops->DefaultTime2Wait); | |
126 | pr_debug("DefaultTime2Retain: %hu\n", | |
127 | sess_ops->DefaultTime2Retain); | |
128 | pr_debug("MaxOutstandingR2T: %hu\n", | |
129 | sess_ops->MaxOutstandingR2T); | |
130 | pr_debug("DataPDUInOrder: %s\n", | |
131 | (sess_ops->DataPDUInOrder) ? "Yes" : "No"); | |
132 | pr_debug("DataSequenceInOrder: %s\n", | |
133 | (sess_ops->DataSequenceInOrder) ? "Yes" : "No"); | |
134 | pr_debug("ErrorRecoveryLevel: %hu\n", | |
135 | sess_ops->ErrorRecoveryLevel); | |
136 | pr_debug("SessionType: %s\n", (sess_ops->SessionType) ? | |
137 | "Discovery" : "Normal"); | |
138 | } | |
139 | ||
140 | void iscsi_print_params(struct iscsi_param_list *param_list) | |
141 | { | |
142 | struct iscsi_param *param; | |
143 | ||
144 | list_for_each_entry(param, ¶m_list->param_list, p_list) | |
145 | pr_debug("%s: %s\n", param->name, param->value); | |
146 | } | |
147 | ||
148 | static struct iscsi_param *iscsi_set_default_param(struct iscsi_param_list *param_list, | |
149 | char *name, char *value, u8 phase, u8 scope, u8 sender, | |
150 | u16 type_range, u8 use) | |
151 | { | |
152 | struct iscsi_param *param = NULL; | |
153 | ||
154 | param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL); | |
155 | if (!param) { | |
156 | pr_err("Unable to allocate memory for parameter.\n"); | |
157 | goto out; | |
158 | } | |
159 | INIT_LIST_HEAD(¶m->p_list); | |
160 | ||
ed72a4d5 | 161 | param->name = kstrdup(name, GFP_KERNEL); |
e48354ce NB |
162 | if (!param->name) { |
163 | pr_err("Unable to allocate memory for parameter name.\n"); | |
164 | goto out; | |
165 | } | |
166 | ||
ed72a4d5 | 167 | param->value = kstrdup(value, GFP_KERNEL); |
e48354ce NB |
168 | if (!param->value) { |
169 | pr_err("Unable to allocate memory for parameter value.\n"); | |
170 | goto out; | |
171 | } | |
172 | ||
e48354ce NB |
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(¶m->p_list, ¶m_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 | ||
e004cb25 NB |
337 | param = iscsi_set_default_param(pl, MAXXMITDATASEGMENTLENGTH, |
338 | INITIAL_MAXXMITDATASEGMENTLENGTH, | |
339 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
340 | TYPERANGE_512_TO_16777215, USE_ALL); | |
341 | if (!param) | |
342 | goto out; | |
343 | ||
e48354ce NB |
344 | param = iscsi_set_default_param(pl, MAXRECVDATASEGMENTLENGTH, |
345 | INITIAL_MAXRECVDATASEGMENTLENGTH, | |
346 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
347 | TYPERANGE_512_TO_16777215, USE_ALL); | |
348 | if (!param) | |
349 | goto out; | |
350 | ||
351 | param = iscsi_set_default_param(pl, MAXBURSTLENGTH, | |
352 | INITIAL_MAXBURSTLENGTH, PHASE_OPERATIONAL, | |
353 | 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, FIRSTBURSTLENGTH, | |
359 | INITIAL_FIRSTBURSTLENGTH, | |
360 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, | |
361 | TYPERANGE_512_TO_16777215, USE_LEADING_ONLY); | |
362 | if (!param) | |
363 | goto out; | |
364 | ||
365 | param = iscsi_set_default_param(pl, DEFAULTTIME2WAIT, | |
366 | INITIAL_DEFAULTTIME2WAIT, | |
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, DEFAULTTIME2RETAIN, | |
373 | INITIAL_DEFAULTTIME2RETAIN, | |
374 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, | |
375 | TYPERANGE_0_TO_3600, USE_LEADING_ONLY); | |
376 | if (!param) | |
377 | goto out; | |
378 | ||
379 | param = iscsi_set_default_param(pl, MAXOUTSTANDINGR2T, | |
380 | INITIAL_MAXOUTSTANDINGR2T, | |
381 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, | |
382 | TYPERANGE_1_TO_65535, USE_LEADING_ONLY); | |
383 | if (!param) | |
384 | goto out; | |
385 | ||
386 | param = iscsi_set_default_param(pl, DATAPDUINORDER, | |
387 | INITIAL_DATAPDUINORDER, PHASE_OPERATIONAL, | |
388 | SCOPE_SESSION_WIDE, SENDER_BOTH, TYPERANGE_BOOL_OR, | |
389 | USE_LEADING_ONLY); | |
390 | if (!param) | |
391 | goto out; | |
392 | ||
393 | param = iscsi_set_default_param(pl, DATASEQUENCEINORDER, | |
394 | INITIAL_DATASEQUENCEINORDER, | |
395 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, | |
396 | TYPERANGE_BOOL_OR, USE_LEADING_ONLY); | |
397 | if (!param) | |
398 | goto out; | |
399 | ||
400 | param = iscsi_set_default_param(pl, ERRORRECOVERYLEVEL, | |
401 | INITIAL_ERRORRECOVERYLEVEL, | |
402 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, | |
403 | TYPERANGE_0_TO_2, USE_LEADING_ONLY); | |
404 | if (!param) | |
405 | goto out; | |
406 | ||
407 | param = iscsi_set_default_param(pl, SESSIONTYPE, INITIAL_SESSIONTYPE, | |
408 | PHASE_DECLARATIVE, SCOPE_SESSION_WIDE, SENDER_INITIATOR, | |
409 | TYPERANGE_SESSIONTYPE, USE_LEADING_ONLY); | |
410 | if (!param) | |
411 | goto out; | |
412 | ||
413 | param = iscsi_set_default_param(pl, IFMARKER, INITIAL_IFMARKER, | |
414 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
415 | TYPERANGE_BOOL_AND, USE_INITIAL_ONLY); | |
416 | if (!param) | |
417 | goto out; | |
418 | ||
419 | param = iscsi_set_default_param(pl, OFMARKER, INITIAL_OFMARKER, | |
420 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
421 | TYPERANGE_BOOL_AND, USE_INITIAL_ONLY); | |
422 | if (!param) | |
423 | goto out; | |
424 | ||
425 | param = iscsi_set_default_param(pl, IFMARKINT, INITIAL_IFMARKINT, | |
426 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
427 | TYPERANGE_MARKINT, USE_INITIAL_ONLY); | |
428 | if (!param) | |
429 | goto out; | |
430 | ||
431 | param = iscsi_set_default_param(pl, OFMARKINT, INITIAL_OFMARKINT, | |
432 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
433 | TYPERANGE_MARKINT, USE_INITIAL_ONLY); | |
434 | if (!param) | |
435 | goto out; | |
03aa2070 NB |
436 | /* |
437 | * Extra parameters for ISER from RFC-5046 | |
438 | */ | |
af40bb0b | 439 | param = iscsi_set_default_param(pl, RDMAEXTENSIONS, INITIAL_RDMAEXTENSIONS, |
03aa2070 NB |
440 | PHASE_OPERATIONAL, SCOPE_SESSION_WIDE, SENDER_BOTH, |
441 | TYPERANGE_BOOL_AND, USE_LEADING_ONLY); | |
442 | if (!param) | |
443 | goto out; | |
444 | ||
445 | param = iscsi_set_default_param(pl, INITIATORRECVDATASEGMENTLENGTH, | |
446 | INITIAL_INITIATORRECVDATASEGMENTLENGTH, | |
447 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
448 | TYPERANGE_512_TO_16777215, USE_ALL); | |
449 | if (!param) | |
450 | goto out; | |
451 | ||
452 | param = iscsi_set_default_param(pl, TARGETRECVDATASEGMENTLENGTH, | |
453 | INITIAL_TARGETRECVDATASEGMENTLENGTH, | |
454 | PHASE_OPERATIONAL, SCOPE_CONNECTION_ONLY, SENDER_BOTH, | |
455 | TYPERANGE_512_TO_16777215, USE_ALL); | |
456 | if (!param) | |
457 | goto out; | |
e48354ce NB |
458 | |
459 | *param_list_ptr = pl; | |
460 | return 0; | |
461 | out: | |
462 | iscsi_release_param_list(pl); | |
463 | return -1; | |
464 | } | |
465 | ||
466 | int iscsi_set_keys_to_negotiate( | |
03aa2070 NB |
467 | struct iscsi_param_list *param_list, |
468 | bool iser) | |
e48354ce NB |
469 | { |
470 | struct iscsi_param *param; | |
471 | ||
03aa2070 NB |
472 | param_list->iser = iser; |
473 | ||
e48354ce NB |
474 | list_for_each_entry(param, ¶m_list->param_list, p_list) { |
475 | param->state = 0; | |
476 | if (!strcmp(param->name, AUTHMETHOD)) { | |
477 | SET_PSTATE_NEGOTIATE(param); | |
478 | } else if (!strcmp(param->name, HEADERDIGEST)) { | |
03aa2070 NB |
479 | if (iser == false) |
480 | SET_PSTATE_NEGOTIATE(param); | |
e48354ce | 481 | } else if (!strcmp(param->name, DATADIGEST)) { |
03aa2070 NB |
482 | if (iser == false) |
483 | SET_PSTATE_NEGOTIATE(param); | |
e48354ce NB |
484 | } else if (!strcmp(param->name, MAXCONNECTIONS)) { |
485 | SET_PSTATE_NEGOTIATE(param); | |
486 | } else if (!strcmp(param->name, TARGETNAME)) { | |
487 | continue; | |
488 | } else if (!strcmp(param->name, INITIATORNAME)) { | |
489 | continue; | |
490 | } else if (!strcmp(param->name, TARGETALIAS)) { | |
491 | if (param->value) | |
492 | SET_PSTATE_NEGOTIATE(param); | |
493 | } else if (!strcmp(param->name, INITIATORALIAS)) { | |
494 | continue; | |
495 | } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) { | |
496 | SET_PSTATE_NEGOTIATE(param); | |
497 | } else if (!strcmp(param->name, INITIALR2T)) { | |
498 | SET_PSTATE_NEGOTIATE(param); | |
499 | } else if (!strcmp(param->name, IMMEDIATEDATA)) { | |
500 | SET_PSTATE_NEGOTIATE(param); | |
501 | } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { | |
03aa2070 NB |
502 | if (iser == false) |
503 | SET_PSTATE_NEGOTIATE(param); | |
e004cb25 NB |
504 | } else if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) { |
505 | continue; | |
e48354ce NB |
506 | } else if (!strcmp(param->name, MAXBURSTLENGTH)) { |
507 | SET_PSTATE_NEGOTIATE(param); | |
508 | } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) { | |
509 | SET_PSTATE_NEGOTIATE(param); | |
510 | } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) { | |
511 | SET_PSTATE_NEGOTIATE(param); | |
512 | } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) { | |
513 | SET_PSTATE_NEGOTIATE(param); | |
514 | } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) { | |
515 | SET_PSTATE_NEGOTIATE(param); | |
516 | } else if (!strcmp(param->name, DATAPDUINORDER)) { | |
517 | SET_PSTATE_NEGOTIATE(param); | |
518 | } else if (!strcmp(param->name, DATASEQUENCEINORDER)) { | |
519 | SET_PSTATE_NEGOTIATE(param); | |
520 | } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) { | |
521 | SET_PSTATE_NEGOTIATE(param); | |
522 | } else if (!strcmp(param->name, SESSIONTYPE)) { | |
523 | SET_PSTATE_NEGOTIATE(param); | |
524 | } else if (!strcmp(param->name, IFMARKER)) { | |
525 | SET_PSTATE_NEGOTIATE(param); | |
526 | } else if (!strcmp(param->name, OFMARKER)) { | |
527 | SET_PSTATE_NEGOTIATE(param); | |
528 | } else if (!strcmp(param->name, IFMARKINT)) { | |
529 | SET_PSTATE_NEGOTIATE(param); | |
530 | } else if (!strcmp(param->name, OFMARKINT)) { | |
531 | SET_PSTATE_NEGOTIATE(param); | |
af40bb0b | 532 | } else if (!strcmp(param->name, RDMAEXTENSIONS)) { |
03aa2070 NB |
533 | if (iser == true) |
534 | SET_PSTATE_NEGOTIATE(param); | |
535 | } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) { | |
536 | if (iser == true) | |
537 | SET_PSTATE_NEGOTIATE(param); | |
538 | } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) { | |
539 | if (iser == true) | |
540 | SET_PSTATE_NEGOTIATE(param); | |
e48354ce NB |
541 | } |
542 | } | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | int iscsi_set_keys_irrelevant_for_discovery( | |
548 | struct iscsi_param_list *param_list) | |
549 | { | |
550 | struct iscsi_param *param; | |
551 | ||
552 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
553 | if (!strcmp(param->name, MAXCONNECTIONS)) | |
554 | param->state &= ~PSTATE_NEGOTIATE; | |
555 | else if (!strcmp(param->name, INITIALR2T)) | |
556 | param->state &= ~PSTATE_NEGOTIATE; | |
557 | else if (!strcmp(param->name, IMMEDIATEDATA)) | |
558 | param->state &= ~PSTATE_NEGOTIATE; | |
559 | else if (!strcmp(param->name, MAXBURSTLENGTH)) | |
560 | param->state &= ~PSTATE_NEGOTIATE; | |
561 | else if (!strcmp(param->name, FIRSTBURSTLENGTH)) | |
562 | param->state &= ~PSTATE_NEGOTIATE; | |
563 | else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) | |
564 | param->state &= ~PSTATE_NEGOTIATE; | |
565 | else if (!strcmp(param->name, DATAPDUINORDER)) | |
566 | param->state &= ~PSTATE_NEGOTIATE; | |
567 | else if (!strcmp(param->name, DATASEQUENCEINORDER)) | |
568 | param->state &= ~PSTATE_NEGOTIATE; | |
569 | else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) | |
570 | param->state &= ~PSTATE_NEGOTIATE; | |
571 | else if (!strcmp(param->name, DEFAULTTIME2WAIT)) | |
572 | param->state &= ~PSTATE_NEGOTIATE; | |
573 | else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) | |
574 | param->state &= ~PSTATE_NEGOTIATE; | |
575 | else if (!strcmp(param->name, IFMARKER)) | |
576 | param->state &= ~PSTATE_NEGOTIATE; | |
577 | else if (!strcmp(param->name, OFMARKER)) | |
578 | param->state &= ~PSTATE_NEGOTIATE; | |
579 | else if (!strcmp(param->name, IFMARKINT)) | |
580 | param->state &= ~PSTATE_NEGOTIATE; | |
581 | else if (!strcmp(param->name, OFMARKINT)) | |
582 | param->state &= ~PSTATE_NEGOTIATE; | |
af40bb0b | 583 | else if (!strcmp(param->name, RDMAEXTENSIONS)) |
03aa2070 NB |
584 | param->state &= ~PSTATE_NEGOTIATE; |
585 | else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) | |
586 | param->state &= ~PSTATE_NEGOTIATE; | |
587 | else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) | |
588 | param->state &= ~PSTATE_NEGOTIATE; | |
e48354ce NB |
589 | } |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | int iscsi_copy_param_list( | |
595 | struct iscsi_param_list **dst_param_list, | |
596 | struct iscsi_param_list *src_param_list, | |
597 | int leading) | |
598 | { | |
9be08c58 JJ |
599 | struct iscsi_param *param = NULL; |
600 | struct iscsi_param *new_param = NULL; | |
e48354ce NB |
601 | struct iscsi_param_list *param_list = NULL; |
602 | ||
603 | param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL); | |
604 | if (!param_list) { | |
9be08c58 | 605 | pr_err("Unable to allocate memory for struct iscsi_param_list.\n"); |
c9049bb0 | 606 | return -1; |
e48354ce NB |
607 | } |
608 | INIT_LIST_HEAD(¶m_list->param_list); | |
609 | INIT_LIST_HEAD(¶m_list->extra_response_list); | |
610 | ||
611 | list_for_each_entry(param, &src_param_list->param_list, p_list) { | |
612 | if (!leading && (param->scope & SCOPE_SESSION_WIDE)) { | |
613 | if ((strcmp(param->name, "TargetName") != 0) && | |
614 | (strcmp(param->name, "InitiatorName") != 0) && | |
615 | (strcmp(param->name, "TargetPortalGroupTag") != 0)) | |
616 | continue; | |
617 | } | |
618 | ||
619 | new_param = kzalloc(sizeof(struct iscsi_param), GFP_KERNEL); | |
620 | if (!new_param) { | |
9be08c58 JJ |
621 | pr_err("Unable to allocate memory for struct iscsi_param.\n"); |
622 | goto err_out; | |
623 | } | |
624 | ||
625 | new_param->name = kstrdup(param->name, GFP_KERNEL); | |
626 | new_param->value = kstrdup(param->value, GFP_KERNEL); | |
627 | if (!new_param->value || !new_param->name) { | |
628 | kfree(new_param->value); | |
629 | kfree(new_param->name); | |
630 | kfree(new_param); | |
631 | pr_err("Unable to allocate memory for parameter name/value.\n"); | |
e48354ce NB |
632 | goto err_out; |
633 | } | |
634 | ||
635 | new_param->set_param = param->set_param; | |
636 | new_param->phase = param->phase; | |
637 | new_param->scope = param->scope; | |
638 | new_param->sender = param->sender; | |
639 | new_param->type = param->type; | |
640 | new_param->use = param->use; | |
641 | new_param->type_range = param->type_range; | |
642 | ||
e48354ce NB |
643 | list_add_tail(&new_param->p_list, ¶m_list->param_list); |
644 | } | |
645 | ||
9be08c58 | 646 | if (!list_empty(¶m_list->param_list)) { |
e48354ce | 647 | *dst_param_list = param_list; |
9be08c58 | 648 | } else { |
e48354ce NB |
649 | pr_err("No parameters allocated.\n"); |
650 | goto err_out; | |
651 | } | |
652 | ||
653 | return 0; | |
654 | ||
655 | err_out: | |
656 | iscsi_release_param_list(param_list); | |
657 | return -1; | |
658 | } | |
659 | ||
660 | static void iscsi_release_extra_responses(struct iscsi_param_list *param_list) | |
661 | { | |
662 | struct iscsi_extra_response *er, *er_tmp; | |
663 | ||
664 | list_for_each_entry_safe(er, er_tmp, ¶m_list->extra_response_list, | |
665 | er_list) { | |
666 | list_del(&er->er_list); | |
667 | kfree(er); | |
668 | } | |
669 | } | |
670 | ||
671 | void iscsi_release_param_list(struct iscsi_param_list *param_list) | |
672 | { | |
673 | struct iscsi_param *param, *param_tmp; | |
674 | ||
675 | list_for_each_entry_safe(param, param_tmp, ¶m_list->param_list, | |
676 | p_list) { | |
677 | list_del(¶m->p_list); | |
678 | ||
679 | kfree(param->name); | |
e48354ce | 680 | kfree(param->value); |
e48354ce | 681 | kfree(param); |
e48354ce NB |
682 | } |
683 | ||
684 | iscsi_release_extra_responses(param_list); | |
685 | ||
686 | kfree(param_list); | |
687 | } | |
688 | ||
689 | struct iscsi_param *iscsi_find_param_from_key( | |
690 | char *key, | |
691 | struct iscsi_param_list *param_list) | |
692 | { | |
693 | struct iscsi_param *param; | |
694 | ||
695 | if (!key || !param_list) { | |
696 | pr_err("Key or parameter list pointer is NULL.\n"); | |
697 | return NULL; | |
698 | } | |
699 | ||
700 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
701 | if (!strcmp(key, param->name)) | |
702 | return param; | |
703 | } | |
704 | ||
705 | pr_err("Unable to locate key \"%s\".\n", key); | |
706 | return NULL; | |
707 | } | |
708 | ||
709 | int iscsi_extract_key_value(char *textbuf, char **key, char **value) | |
710 | { | |
711 | *value = strchr(textbuf, '='); | |
712 | if (!*value) { | |
59e13d48 | 713 | pr_err("Unable to locate \"=\" separator for key," |
e48354ce NB |
714 | " ignoring request.\n"); |
715 | return -1; | |
716 | } | |
717 | ||
718 | *key = textbuf; | |
719 | **value = '\0'; | |
720 | *value = *value + 1; | |
721 | ||
722 | return 0; | |
723 | } | |
724 | ||
725 | int iscsi_update_param_value(struct iscsi_param *param, char *value) | |
726 | { | |
727 | kfree(param->value); | |
728 | ||
ed72a4d5 | 729 | param->value = kstrdup(value, GFP_KERNEL); |
e48354ce NB |
730 | if (!param->value) { |
731 | pr_err("Unable to allocate memory for value.\n"); | |
617a0c2e | 732 | return -ENOMEM; |
e48354ce NB |
733 | } |
734 | ||
e48354ce NB |
735 | pr_debug("iSCSI Parameter updated to %s=%s\n", |
736 | param->name, param->value); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static int iscsi_add_notunderstood_response( | |
741 | char *key, | |
742 | char *value, | |
743 | struct iscsi_param_list *param_list) | |
744 | { | |
745 | struct iscsi_extra_response *extra_response; | |
746 | ||
747 | if (strlen(value) > VALUE_MAXLEN) { | |
748 | pr_err("Value for notunderstood key \"%s\" exceeds %d," | |
749 | " protocol error.\n", key, VALUE_MAXLEN); | |
750 | return -1; | |
751 | } | |
752 | ||
753 | extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL); | |
754 | if (!extra_response) { | |
755 | pr_err("Unable to allocate memory for" | |
756 | " struct iscsi_extra_response.\n"); | |
757 | return -1; | |
758 | } | |
759 | INIT_LIST_HEAD(&extra_response->er_list); | |
760 | ||
cea4dcfd KC |
761 | strlcpy(extra_response->key, key, sizeof(extra_response->key)); |
762 | strlcpy(extra_response->value, NOTUNDERSTOOD, | |
763 | sizeof(extra_response->value)); | |
e48354ce NB |
764 | |
765 | list_add_tail(&extra_response->er_list, | |
766 | ¶m_list->extra_response_list); | |
767 | return 0; | |
768 | } | |
769 | ||
770 | static int iscsi_check_for_auth_key(char *key) | |
771 | { | |
772 | /* | |
773 | * RFC 1994 | |
774 | */ | |
775 | if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") || | |
776 | !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") || | |
777 | !strcmp(key, "CHAP_R")) | |
778 | return 1; | |
779 | ||
780 | /* | |
781 | * RFC 2945 | |
782 | */ | |
783 | if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") || | |
784 | !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") || | |
785 | !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") || | |
786 | !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM")) | |
787 | return 1; | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param) | |
793 | { | |
794 | if (IS_TYPE_BOOL_AND(param)) { | |
795 | if (!strcmp(param->value, NO)) | |
796 | SET_PSTATE_REPLY_OPTIONAL(param); | |
797 | } else if (IS_TYPE_BOOL_OR(param)) { | |
798 | if (!strcmp(param->value, YES)) | |
799 | SET_PSTATE_REPLY_OPTIONAL(param); | |
800 | /* | |
801 | * Required for gPXE iSCSI boot client | |
802 | */ | |
803 | if (!strcmp(param->name, IMMEDIATEDATA)) | |
804 | SET_PSTATE_REPLY_OPTIONAL(param); | |
805 | } else if (IS_TYPE_NUMBER(param)) { | |
806 | if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) | |
807 | SET_PSTATE_REPLY_OPTIONAL(param); | |
e48354ce NB |
808 | /* |
809 | * Required for gPXE iSCSI boot client | |
810 | */ | |
811 | if (!strcmp(param->name, MAXCONNECTIONS)) | |
812 | SET_PSTATE_REPLY_OPTIONAL(param); | |
813 | } else if (IS_PHASE_DECLARATIVE(param)) | |
814 | SET_PSTATE_REPLY_OPTIONAL(param); | |
815 | } | |
816 | ||
817 | static int iscsi_check_boolean_value(struct iscsi_param *param, char *value) | |
818 | { | |
819 | if (strcmp(value, YES) && strcmp(value, NO)) { | |
820 | pr_err("Illegal value for \"%s\", must be either" | |
821 | " \"%s\" or \"%s\".\n", param->name, YES, NO); | |
822 | return -1; | |
823 | } | |
824 | ||
825 | return 0; | |
826 | } | |
827 | ||
828 | static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr) | |
829 | { | |
830 | char *tmpptr; | |
831 | int value = 0; | |
832 | ||
833 | value = simple_strtoul(value_ptr, &tmpptr, 0); | |
834 | ||
e48354ce NB |
835 | if (IS_TYPERANGE_0_TO_2(param)) { |
836 | if ((value < 0) || (value > 2)) { | |
837 | pr_err("Illegal value for \"%s\", must be" | |
838 | " between 0 and 2.\n", param->name); | |
839 | return -1; | |
840 | } | |
841 | return 0; | |
842 | } | |
843 | if (IS_TYPERANGE_0_TO_3600(param)) { | |
844 | if ((value < 0) || (value > 3600)) { | |
845 | pr_err("Illegal value for \"%s\", must be" | |
846 | " between 0 and 3600.\n", param->name); | |
847 | return -1; | |
848 | } | |
849 | return 0; | |
850 | } | |
851 | if (IS_TYPERANGE_0_TO_32767(param)) { | |
852 | if ((value < 0) || (value > 32767)) { | |
853 | pr_err("Illegal value for \"%s\", must be" | |
854 | " between 0 and 32767.\n", param->name); | |
855 | return -1; | |
856 | } | |
857 | return 0; | |
858 | } | |
859 | if (IS_TYPERANGE_0_TO_65535(param)) { | |
860 | if ((value < 0) || (value > 65535)) { | |
861 | pr_err("Illegal value for \"%s\", must be" | |
862 | " between 0 and 65535.\n", param->name); | |
863 | return -1; | |
864 | } | |
865 | return 0; | |
866 | } | |
867 | if (IS_TYPERANGE_1_TO_65535(param)) { | |
868 | if ((value < 1) || (value > 65535)) { | |
869 | pr_err("Illegal value for \"%s\", must be" | |
870 | " between 1 and 65535.\n", param->name); | |
871 | return -1; | |
872 | } | |
873 | return 0; | |
874 | } | |
875 | if (IS_TYPERANGE_2_TO_3600(param)) { | |
876 | if ((value < 2) || (value > 3600)) { | |
877 | pr_err("Illegal value for \"%s\", must be" | |
878 | " between 2 and 3600.\n", param->name); | |
879 | return -1; | |
880 | } | |
881 | return 0; | |
882 | } | |
883 | if (IS_TYPERANGE_512_TO_16777215(param)) { | |
884 | if ((value < 512) || (value > 16777215)) { | |
885 | pr_err("Illegal value for \"%s\", must be" | |
886 | " between 512 and 16777215.\n", param->name); | |
887 | return -1; | |
888 | } | |
889 | return 0; | |
890 | } | |
891 | ||
892 | return 0; | |
893 | } | |
894 | ||
895 | static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value) | |
896 | { | |
897 | char *left_val_ptr = NULL, *right_val_ptr = NULL; | |
a227fb3a JE |
898 | char *tilde_ptr = NULL; |
899 | u32 left_val, right_val, local_left_val; | |
e48354ce NB |
900 | |
901 | if (strcmp(param->name, IFMARKINT) && | |
902 | strcmp(param->name, OFMARKINT)) { | |
903 | pr_err("Only parameters \"%s\" or \"%s\" may contain a" | |
904 | " numerical range value.\n", IFMARKINT, OFMARKINT); | |
905 | return -1; | |
906 | } | |
907 | ||
908 | if (IS_PSTATE_PROPOSER(param)) | |
909 | return 0; | |
910 | ||
911 | tilde_ptr = strchr(value, '~'); | |
912 | if (!tilde_ptr) { | |
913 | pr_err("Unable to locate numerical range indicator" | |
914 | " \"~\" for \"%s\".\n", param->name); | |
915 | return -1; | |
916 | } | |
917 | *tilde_ptr = '\0'; | |
918 | ||
919 | left_val_ptr = value; | |
920 | right_val_ptr = value + strlen(left_val_ptr) + 1; | |
921 | ||
922 | if (iscsi_check_numerical_value(param, left_val_ptr) < 0) | |
923 | return -1; | |
924 | if (iscsi_check_numerical_value(param, right_val_ptr) < 0) | |
925 | return -1; | |
926 | ||
a227fb3a JE |
927 | left_val = simple_strtoul(left_val_ptr, NULL, 0); |
928 | right_val = simple_strtoul(right_val_ptr, NULL, 0); | |
e48354ce NB |
929 | *tilde_ptr = '~'; |
930 | ||
931 | if (right_val < left_val) { | |
932 | pr_err("Numerical range for parameter \"%s\" contains" | |
933 | " a right value which is less than the left.\n", | |
934 | param->name); | |
935 | return -1; | |
936 | } | |
937 | ||
938 | /* | |
939 | * For now, enforce reasonable defaults for [I,O]FMarkInt. | |
940 | */ | |
941 | tilde_ptr = strchr(param->value, '~'); | |
942 | if (!tilde_ptr) { | |
943 | pr_err("Unable to locate numerical range indicator" | |
944 | " \"~\" for \"%s\".\n", param->name); | |
945 | return -1; | |
946 | } | |
947 | *tilde_ptr = '\0'; | |
948 | ||
949 | left_val_ptr = param->value; | |
950 | right_val_ptr = param->value + strlen(left_val_ptr) + 1; | |
951 | ||
a227fb3a | 952 | local_left_val = simple_strtoul(left_val_ptr, NULL, 0); |
e48354ce NB |
953 | *tilde_ptr = '~'; |
954 | ||
955 | if (param->set_param) { | |
956 | if ((left_val < local_left_val) || | |
957 | (right_val < local_left_val)) { | |
958 | pr_err("Passed value range \"%u~%u\" is below" | |
959 | " minimum left value \"%u\" for key \"%s\"," | |
960 | " rejecting.\n", left_val, right_val, | |
961 | local_left_val, param->name); | |
962 | return -1; | |
963 | } | |
964 | } else { | |
965 | if ((left_val < local_left_val) && | |
966 | (right_val < local_left_val)) { | |
967 | pr_err("Received value range \"%u~%u\" is" | |
968 | " below minimum left value \"%u\" for key" | |
969 | " \"%s\", rejecting.\n", left_val, right_val, | |
970 | local_left_val, param->name); | |
971 | SET_PSTATE_REJECT(param); | |
972 | if (iscsi_update_param_value(param, REJECT) < 0) | |
973 | return -1; | |
974 | } | |
975 | } | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value) | |
981 | { | |
982 | if (IS_PSTATE_PROPOSER(param)) | |
983 | return 0; | |
984 | ||
985 | if (IS_TYPERANGE_AUTH_PARAM(param)) { | |
986 | if (strcmp(value, KRB5) && strcmp(value, SPKM1) && | |
987 | strcmp(value, SPKM2) && strcmp(value, SRP) && | |
988 | strcmp(value, CHAP) && strcmp(value, NONE)) { | |
989 | pr_err("Illegal value for \"%s\", must be" | |
990 | " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\"" | |
991 | " or \"%s\".\n", param->name, KRB5, | |
992 | SPKM1, SPKM2, SRP, CHAP, NONE); | |
993 | return -1; | |
994 | } | |
995 | } | |
996 | if (IS_TYPERANGE_DIGEST_PARAM(param)) { | |
997 | if (strcmp(value, CRC32C) && strcmp(value, NONE)) { | |
998 | pr_err("Illegal value for \"%s\", must be" | |
999 | " \"%s\" or \"%s\".\n", param->name, | |
1000 | CRC32C, NONE); | |
1001 | return -1; | |
1002 | } | |
1003 | } | |
1004 | if (IS_TYPERANGE_SESSIONTYPE(param)) { | |
1005 | if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) { | |
1006 | pr_err("Illegal value for \"%s\", must be" | |
1007 | " \"%s\" or \"%s\".\n", param->name, | |
1008 | DISCOVERY, NORMAL); | |
1009 | return -1; | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * This function is used to pick a value range number, currently just | |
1018 | * returns the lesser of both right values. | |
1019 | */ | |
1020 | static char *iscsi_get_value_from_number_range( | |
1021 | struct iscsi_param *param, | |
1022 | char *value) | |
1023 | { | |
1024 | char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL; | |
1025 | u32 acceptor_right_value, proposer_right_value; | |
1026 | ||
1027 | tilde_ptr1 = strchr(value, '~'); | |
1028 | if (!tilde_ptr1) | |
1029 | return NULL; | |
1030 | *tilde_ptr1++ = '\0'; | |
1031 | proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0); | |
1032 | ||
1033 | tilde_ptr2 = strchr(param->value, '~'); | |
1034 | if (!tilde_ptr2) | |
1035 | return NULL; | |
1036 | *tilde_ptr2++ = '\0'; | |
1037 | acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0); | |
1038 | ||
1039 | return (acceptor_right_value >= proposer_right_value) ? | |
1040 | tilde_ptr1 : tilde_ptr2; | |
1041 | } | |
1042 | ||
1043 | static char *iscsi_check_valuelist_for_support( | |
1044 | struct iscsi_param *param, | |
1045 | char *value) | |
1046 | { | |
1047 | char *tmp1 = NULL, *tmp2 = NULL; | |
1048 | char *acceptor_values = NULL, *proposer_values = NULL; | |
1049 | ||
1050 | acceptor_values = param->value; | |
1051 | proposer_values = value; | |
1052 | ||
1053 | do { | |
1054 | if (!proposer_values) | |
1055 | return NULL; | |
1056 | tmp1 = strchr(proposer_values, ','); | |
1057 | if (tmp1) | |
1058 | *tmp1 = '\0'; | |
1059 | acceptor_values = param->value; | |
1060 | do { | |
1061 | if (!acceptor_values) { | |
1062 | if (tmp1) | |
1063 | *tmp1 = ','; | |
1064 | return NULL; | |
1065 | } | |
1066 | tmp2 = strchr(acceptor_values, ','); | |
1067 | if (tmp2) | |
1068 | *tmp2 = '\0'; | |
e48354ce NB |
1069 | if (!strcmp(acceptor_values, proposer_values)) { |
1070 | if (tmp2) | |
1071 | *tmp2 = ','; | |
1072 | goto out; | |
1073 | } | |
1074 | if (tmp2) | |
1075 | *tmp2++ = ','; | |
1076 | ||
1077 | acceptor_values = tmp2; | |
e48354ce NB |
1078 | } while (acceptor_values); |
1079 | if (tmp1) | |
1080 | *tmp1++ = ','; | |
1081 | proposer_values = tmp1; | |
1082 | } while (proposer_values); | |
1083 | ||
1084 | out: | |
1085 | return proposer_values; | |
1086 | } | |
1087 | ||
9977bb18 NB |
1088 | static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value, |
1089 | struct iscsi_conn *conn) | |
e48354ce NB |
1090 | { |
1091 | u8 acceptor_boolean_value = 0, proposer_boolean_value = 0; | |
1092 | char *negoitated_value = NULL; | |
1093 | ||
1094 | if (IS_PSTATE_ACCEPTOR(param)) { | |
1095 | pr_err("Received key \"%s\" twice, protocol error.\n", | |
1096 | param->name); | |
1097 | return -1; | |
1098 | } | |
1099 | ||
1100 | if (IS_PSTATE_REJECT(param)) | |
1101 | return 0; | |
1102 | ||
1103 | if (IS_TYPE_BOOL_AND(param)) { | |
1104 | if (!strcmp(value, YES)) | |
1105 | proposer_boolean_value = 1; | |
1106 | if (!strcmp(param->value, YES)) | |
1107 | acceptor_boolean_value = 1; | |
1108 | if (acceptor_boolean_value && proposer_boolean_value) | |
1109 | do {} while (0); | |
1110 | else { | |
1111 | if (iscsi_update_param_value(param, NO) < 0) | |
1112 | return -1; | |
1113 | if (!proposer_boolean_value) | |
1114 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1115 | } | |
1116 | } else if (IS_TYPE_BOOL_OR(param)) { | |
1117 | if (!strcmp(value, YES)) | |
1118 | proposer_boolean_value = 1; | |
1119 | if (!strcmp(param->value, YES)) | |
1120 | acceptor_boolean_value = 1; | |
1121 | if (acceptor_boolean_value || proposer_boolean_value) { | |
1122 | if (iscsi_update_param_value(param, YES) < 0) | |
1123 | return -1; | |
1124 | if (proposer_boolean_value) | |
1125 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1126 | } | |
1127 | } else if (IS_TYPE_NUMBER(param)) { | |
1be2956d | 1128 | char *tmpptr, buf[11]; |
e48354ce NB |
1129 | u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0); |
1130 | u32 proposer_value = simple_strtoul(value, &tmpptr, 0); | |
1131 | ||
1be2956d | 1132 | memset(buf, 0, sizeof(buf)); |
e48354ce NB |
1133 | |
1134 | if (!strcmp(param->name, MAXCONNECTIONS) || | |
1135 | !strcmp(param->name, MAXBURSTLENGTH) || | |
1136 | !strcmp(param->name, FIRSTBURSTLENGTH) || | |
1137 | !strcmp(param->name, MAXOUTSTANDINGR2T) || | |
1138 | !strcmp(param->name, DEFAULTTIME2RETAIN) || | |
1139 | !strcmp(param->name, ERRORRECOVERYLEVEL)) { | |
1140 | if (proposer_value > acceptor_value) { | |
1141 | sprintf(buf, "%u", acceptor_value); | |
1142 | if (iscsi_update_param_value(param, | |
1143 | &buf[0]) < 0) | |
1144 | return -1; | |
1145 | } else { | |
1146 | if (iscsi_update_param_value(param, value) < 0) | |
1147 | return -1; | |
1148 | } | |
1149 | } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) { | |
1150 | if (acceptor_value > proposer_value) { | |
1151 | sprintf(buf, "%u", acceptor_value); | |
1152 | if (iscsi_update_param_value(param, | |
1153 | &buf[0]) < 0) | |
1154 | return -1; | |
1155 | } else { | |
1156 | if (iscsi_update_param_value(param, value) < 0) | |
1157 | return -1; | |
1158 | } | |
1159 | } else { | |
1160 | if (iscsi_update_param_value(param, value) < 0) | |
1161 | return -1; | |
1162 | } | |
1163 | ||
9977bb18 NB |
1164 | if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { |
1165 | struct iscsi_param *param_mxdsl; | |
1166 | unsigned long long tmp; | |
1167 | int rc; | |
1168 | ||
1169 | rc = strict_strtoull(param->value, 0, &tmp); | |
1170 | if (rc < 0) | |
1171 | return -1; | |
1172 | ||
1173 | conn->conn_ops->MaxRecvDataSegmentLength = tmp; | |
1174 | pr_debug("Saving op->MaxRecvDataSegmentLength from" | |
1175 | " original initiator received value: %u\n", | |
1176 | conn->conn_ops->MaxRecvDataSegmentLength); | |
1177 | ||
1178 | param_mxdsl = iscsi_find_param_from_key( | |
1179 | MAXXMITDATASEGMENTLENGTH, | |
1180 | conn->param_list); | |
1181 | if (!param_mxdsl) | |
1182 | return -1; | |
1183 | ||
1184 | rc = iscsi_update_param_value(param, | |
1185 | param_mxdsl->value); | |
1186 | if (rc < 0) | |
1187 | return -1; | |
1188 | ||
1189 | pr_debug("Updated %s to target MXDSL value: %s\n", | |
1190 | param->name, param->value); | |
1191 | } | |
1192 | ||
e48354ce NB |
1193 | } else if (IS_TYPE_NUMBER_RANGE(param)) { |
1194 | negoitated_value = iscsi_get_value_from_number_range( | |
1195 | param, value); | |
1196 | if (!negoitated_value) | |
1197 | return -1; | |
1198 | if (iscsi_update_param_value(param, negoitated_value) < 0) | |
1199 | return -1; | |
1200 | } else if (IS_TYPE_VALUE_LIST(param)) { | |
1201 | negoitated_value = iscsi_check_valuelist_for_support( | |
1202 | param, value); | |
1203 | if (!negoitated_value) { | |
1204 | pr_err("Proposer's value list \"%s\" contains" | |
1205 | " no valid values from Acceptor's value list" | |
1206 | " \"%s\".\n", value, param->value); | |
1207 | return -1; | |
1208 | } | |
1209 | if (iscsi_update_param_value(param, negoitated_value) < 0) | |
1210 | return -1; | |
1211 | } else if (IS_PHASE_DECLARATIVE(param)) { | |
1212 | if (iscsi_update_param_value(param, value) < 0) | |
1213 | return -1; | |
1214 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1215 | } | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | static int iscsi_check_proposer_state(struct iscsi_param *param, char *value) | |
1221 | { | |
1222 | if (IS_PSTATE_RESPONSE_GOT(param)) { | |
1223 | pr_err("Received key \"%s\" twice, protocol error.\n", | |
1224 | param->name); | |
1225 | return -1; | |
1226 | } | |
1227 | ||
1228 | if (IS_TYPE_NUMBER_RANGE(param)) { | |
1229 | u32 left_val = 0, right_val = 0, recieved_value = 0; | |
1230 | char *left_val_ptr = NULL, *right_val_ptr = NULL; | |
a227fb3a | 1231 | char *tilde_ptr = NULL; |
e48354ce NB |
1232 | |
1233 | if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) { | |
1234 | if (iscsi_update_param_value(param, value) < 0) | |
1235 | return -1; | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | tilde_ptr = strchr(value, '~'); | |
1240 | if (tilde_ptr) { | |
1241 | pr_err("Illegal \"~\" in response for \"%s\".\n", | |
1242 | param->name); | |
1243 | return -1; | |
1244 | } | |
1245 | tilde_ptr = strchr(param->value, '~'); | |
1246 | if (!tilde_ptr) { | |
1247 | pr_err("Unable to locate numerical range" | |
1248 | " indicator \"~\" for \"%s\".\n", param->name); | |
1249 | return -1; | |
1250 | } | |
1251 | *tilde_ptr = '\0'; | |
1252 | ||
1253 | left_val_ptr = param->value; | |
1254 | right_val_ptr = param->value + strlen(left_val_ptr) + 1; | |
a227fb3a JE |
1255 | left_val = simple_strtoul(left_val_ptr, NULL, 0); |
1256 | right_val = simple_strtoul(right_val_ptr, NULL, 0); | |
1257 | recieved_value = simple_strtoul(value, NULL, 0); | |
e48354ce NB |
1258 | |
1259 | *tilde_ptr = '~'; | |
1260 | ||
1261 | if ((recieved_value < left_val) || | |
1262 | (recieved_value > right_val)) { | |
1263 | pr_err("Illegal response \"%s=%u\", value must" | |
1264 | " be between %u and %u.\n", param->name, | |
1265 | recieved_value, left_val, right_val); | |
1266 | return -1; | |
1267 | } | |
1268 | } else if (IS_TYPE_VALUE_LIST(param)) { | |
1269 | char *comma_ptr = NULL, *tmp_ptr = NULL; | |
1270 | ||
1271 | comma_ptr = strchr(value, ','); | |
1272 | if (comma_ptr) { | |
1273 | pr_err("Illegal \",\" in response for \"%s\".\n", | |
1274 | param->name); | |
1275 | return -1; | |
1276 | } | |
1277 | ||
1278 | tmp_ptr = iscsi_check_valuelist_for_support(param, value); | |
1279 | if (!tmp_ptr) | |
1280 | return -1; | |
1281 | } | |
1282 | ||
1283 | if (iscsi_update_param_value(param, value) < 0) | |
1284 | return -1; | |
1285 | ||
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | static int iscsi_check_value(struct iscsi_param *param, char *value) | |
1290 | { | |
1291 | char *comma_ptr = NULL; | |
1292 | ||
1293 | if (!strcmp(value, REJECT)) { | |
1294 | if (!strcmp(param->name, IFMARKINT) || | |
1295 | !strcmp(param->name, OFMARKINT)) { | |
1296 | /* | |
1297 | * Reject is not fatal for [I,O]FMarkInt, and causes | |
1298 | * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2) | |
1299 | */ | |
1300 | SET_PSTATE_REJECT(param); | |
1301 | return 0; | |
1302 | } | |
1303 | pr_err("Received %s=%s\n", param->name, value); | |
1304 | return -1; | |
1305 | } | |
1306 | if (!strcmp(value, IRRELEVANT)) { | |
1307 | pr_debug("Received %s=%s\n", param->name, value); | |
1308 | SET_PSTATE_IRRELEVANT(param); | |
1309 | return 0; | |
1310 | } | |
1311 | if (!strcmp(value, NOTUNDERSTOOD)) { | |
1312 | if (!IS_PSTATE_PROPOSER(param)) { | |
1313 | pr_err("Received illegal offer %s=%s\n", | |
1314 | param->name, value); | |
1315 | return -1; | |
1316 | } | |
1317 | ||
1318 | /* #warning FIXME: Add check for X-ExtensionKey here */ | |
1319 | pr_err("Standard iSCSI key \"%s\" cannot be answered" | |
1320 | " with \"%s\", protocol error.\n", param->name, value); | |
1321 | return -1; | |
1322 | } | |
1323 | ||
1324 | do { | |
1325 | comma_ptr = NULL; | |
1326 | comma_ptr = strchr(value, ','); | |
1327 | ||
1328 | if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) { | |
59e13d48 | 1329 | pr_err("Detected value separator \",\", but" |
e48354ce NB |
1330 | " key \"%s\" does not allow a value list," |
1331 | " protocol error.\n", param->name); | |
1332 | return -1; | |
1333 | } | |
1334 | if (comma_ptr) | |
1335 | *comma_ptr = '\0'; | |
1336 | ||
1337 | if (strlen(value) > VALUE_MAXLEN) { | |
1338 | pr_err("Value for key \"%s\" exceeds %d," | |
1339 | " protocol error.\n", param->name, | |
1340 | VALUE_MAXLEN); | |
1341 | return -1; | |
1342 | } | |
1343 | ||
1344 | if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) { | |
1345 | if (iscsi_check_boolean_value(param, value) < 0) | |
1346 | return -1; | |
1347 | } else if (IS_TYPE_NUMBER(param)) { | |
1348 | if (iscsi_check_numerical_value(param, value) < 0) | |
1349 | return -1; | |
1350 | } else if (IS_TYPE_NUMBER_RANGE(param)) { | |
1351 | if (iscsi_check_numerical_range_value(param, value) < 0) | |
1352 | return -1; | |
1353 | } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) { | |
1354 | if (iscsi_check_string_or_list_value(param, value) < 0) | |
1355 | return -1; | |
1356 | } else { | |
1357 | pr_err("Huh? 0x%02x\n", param->type); | |
1358 | return -1; | |
1359 | } | |
1360 | ||
1361 | if (comma_ptr) | |
1362 | *comma_ptr++ = ','; | |
1363 | ||
1364 | value = comma_ptr; | |
1365 | } while (value); | |
1366 | ||
1367 | return 0; | |
1368 | } | |
1369 | ||
1370 | static struct iscsi_param *__iscsi_check_key( | |
1371 | char *key, | |
1372 | int sender, | |
1373 | struct iscsi_param_list *param_list) | |
1374 | { | |
1375 | struct iscsi_param *param; | |
1376 | ||
1377 | if (strlen(key) > KEY_MAXLEN) { | |
1378 | pr_err("Length of key name \"%s\" exceeds %d.\n", | |
1379 | key, KEY_MAXLEN); | |
1380 | return NULL; | |
1381 | } | |
1382 | ||
1383 | param = iscsi_find_param_from_key(key, param_list); | |
1384 | if (!param) | |
1385 | return NULL; | |
1386 | ||
1387 | if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) { | |
1388 | pr_err("Key \"%s\" may not be sent to %s," | |
1389 | " protocol error.\n", param->name, | |
1390 | (sender & SENDER_RECEIVER) ? "target" : "initiator"); | |
1391 | return NULL; | |
1392 | } | |
1393 | ||
1394 | if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) { | |
1395 | pr_err("Key \"%s\" may not be sent to %s," | |
1396 | " protocol error.\n", param->name, | |
1397 | (sender & SENDER_RECEIVER) ? "initiator" : "target"); | |
1398 | return NULL; | |
1399 | } | |
1400 | ||
1401 | return param; | |
1402 | } | |
1403 | ||
1404 | static struct iscsi_param *iscsi_check_key( | |
1405 | char *key, | |
1406 | int phase, | |
1407 | int sender, | |
1408 | struct iscsi_param_list *param_list) | |
1409 | { | |
1410 | struct iscsi_param *param; | |
1411 | /* | |
1412 | * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1) | |
1413 | */ | |
1414 | if (strlen(key) > KEY_MAXLEN) { | |
1415 | pr_err("Length of key name \"%s\" exceeds %d.\n", | |
1416 | key, KEY_MAXLEN); | |
1417 | return NULL; | |
1418 | } | |
1419 | ||
1420 | param = iscsi_find_param_from_key(key, param_list); | |
1421 | if (!param) | |
1422 | return NULL; | |
1423 | ||
1424 | if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) { | |
1425 | pr_err("Key \"%s\" may not be sent to %s," | |
1426 | " protocol error.\n", param->name, | |
1427 | (sender & SENDER_RECEIVER) ? "target" : "initiator"); | |
1428 | return NULL; | |
1429 | } | |
1430 | if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) { | |
1431 | pr_err("Key \"%s\" may not be sent to %s," | |
1432 | " protocol error.\n", param->name, | |
1433 | (sender & SENDER_RECEIVER) ? "initiator" : "target"); | |
1434 | return NULL; | |
1435 | } | |
1436 | ||
1437 | if (IS_PSTATE_ACCEPTOR(param)) { | |
1438 | pr_err("Key \"%s\" received twice, protocol error.\n", | |
1439 | key); | |
1440 | return NULL; | |
1441 | } | |
1442 | ||
1443 | if (!phase) | |
1444 | return param; | |
1445 | ||
1446 | if (!(param->phase & phase)) { | |
1447 | pr_err("Key \"%s\" may not be negotiated during ", | |
1448 | param->name); | |
1449 | switch (phase) { | |
1450 | case PHASE_SECURITY: | |
1451 | pr_debug("Security phase.\n"); | |
1452 | break; | |
1453 | case PHASE_OPERATIONAL: | |
1454 | pr_debug("Operational phase.\n"); | |
db831018 | 1455 | break; |
e48354ce NB |
1456 | default: |
1457 | pr_debug("Unknown phase.\n"); | |
1458 | } | |
1459 | return NULL; | |
1460 | } | |
1461 | ||
1462 | return param; | |
1463 | } | |
1464 | ||
1465 | static int iscsi_enforce_integrity_rules( | |
1466 | u8 phase, | |
1467 | struct iscsi_param_list *param_list) | |
1468 | { | |
1469 | char *tmpptr; | |
1470 | u8 DataSequenceInOrder = 0; | |
1471 | u8 ErrorRecoveryLevel = 0, SessionType = 0; | |
1472 | u8 IFMarker = 0, OFMarker = 0; | |
2ff017f5 | 1473 | u8 IFMarkInt_Reject = 1, OFMarkInt_Reject = 1; |
e48354ce NB |
1474 | u32 FirstBurstLength = 0, MaxBurstLength = 0; |
1475 | struct iscsi_param *param = NULL; | |
1476 | ||
1477 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1478 | if (!(param->phase & phase)) | |
1479 | continue; | |
1480 | if (!strcmp(param->name, SESSIONTYPE)) | |
1481 | if (!strcmp(param->value, NORMAL)) | |
1482 | SessionType = 1; | |
1483 | if (!strcmp(param->name, ERRORRECOVERYLEVEL)) | |
1484 | ErrorRecoveryLevel = simple_strtoul(param->value, | |
1485 | &tmpptr, 0); | |
1486 | if (!strcmp(param->name, DATASEQUENCEINORDER)) | |
1487 | if (!strcmp(param->value, YES)) | |
1488 | DataSequenceInOrder = 1; | |
1489 | if (!strcmp(param->name, MAXBURSTLENGTH)) | |
1490 | MaxBurstLength = simple_strtoul(param->value, | |
1491 | &tmpptr, 0); | |
1492 | if (!strcmp(param->name, IFMARKER)) | |
1493 | if (!strcmp(param->value, YES)) | |
1494 | IFMarker = 1; | |
1495 | if (!strcmp(param->name, OFMARKER)) | |
1496 | if (!strcmp(param->value, YES)) | |
1497 | OFMarker = 1; | |
1498 | if (!strcmp(param->name, IFMARKINT)) | |
1499 | if (!strcmp(param->value, REJECT)) | |
1500 | IFMarkInt_Reject = 1; | |
1501 | if (!strcmp(param->name, OFMARKINT)) | |
1502 | if (!strcmp(param->value, REJECT)) | |
1503 | OFMarkInt_Reject = 1; | |
1504 | } | |
1505 | ||
1506 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1507 | if (!(param->phase & phase)) | |
1508 | continue; | |
1509 | if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) && | |
1510 | (strcmp(param->name, IFMARKER) && | |
1511 | strcmp(param->name, OFMARKER) && | |
1512 | strcmp(param->name, IFMARKINT) && | |
1513 | strcmp(param->name, OFMARKINT)))) | |
1514 | continue; | |
1515 | if (!strcmp(param->name, MAXOUTSTANDINGR2T) && | |
1516 | DataSequenceInOrder && (ErrorRecoveryLevel > 0)) { | |
1517 | if (strcmp(param->value, "1")) { | |
1518 | if (iscsi_update_param_value(param, "1") < 0) | |
1519 | return -1; | |
1520 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1521 | param->name, param->value); | |
1522 | } | |
1523 | } | |
1524 | if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) { | |
1525 | if (strcmp(param->value, "1")) { | |
1526 | if (iscsi_update_param_value(param, "1") < 0) | |
1527 | return -1; | |
1528 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1529 | param->name, param->value); | |
1530 | } | |
1531 | } | |
1532 | if (!strcmp(param->name, FIRSTBURSTLENGTH)) { | |
1533 | FirstBurstLength = simple_strtoul(param->value, | |
1534 | &tmpptr, 0); | |
1535 | if (FirstBurstLength > MaxBurstLength) { | |
1be2956d DC |
1536 | char tmpbuf[11]; |
1537 | memset(tmpbuf, 0, sizeof(tmpbuf)); | |
e48354ce NB |
1538 | sprintf(tmpbuf, "%u", MaxBurstLength); |
1539 | if (iscsi_update_param_value(param, tmpbuf)) | |
1540 | return -1; | |
1541 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1542 | param->name, param->value); | |
1543 | } | |
1544 | } | |
1545 | if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) { | |
1546 | if (iscsi_update_param_value(param, NO) < 0) | |
1547 | return -1; | |
1548 | IFMarker = 0; | |
1549 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1550 | param->name, param->value); | |
1551 | } | |
1552 | if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) { | |
1553 | if (iscsi_update_param_value(param, NO) < 0) | |
1554 | return -1; | |
1555 | OFMarker = 0; | |
1556 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1557 | param->name, param->value); | |
1558 | } | |
1559 | if (!strcmp(param->name, IFMARKINT) && !IFMarker) { | |
1560 | if (!strcmp(param->value, REJECT)) | |
1561 | continue; | |
1562 | param->state &= ~PSTATE_NEGOTIATE; | |
1563 | if (iscsi_update_param_value(param, IRRELEVANT) < 0) | |
1564 | return -1; | |
1565 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1566 | param->name, param->value); | |
1567 | } | |
1568 | if (!strcmp(param->name, OFMARKINT) && !OFMarker) { | |
1569 | if (!strcmp(param->value, REJECT)) | |
1570 | continue; | |
1571 | param->state &= ~PSTATE_NEGOTIATE; | |
1572 | if (iscsi_update_param_value(param, IRRELEVANT) < 0) | |
1573 | return -1; | |
1574 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1575 | param->name, param->value); | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | return 0; | |
1580 | } | |
1581 | ||
1582 | int iscsi_decode_text_input( | |
1583 | u8 phase, | |
1584 | u8 sender, | |
1585 | char *textbuf, | |
1586 | u32 length, | |
9977bb18 | 1587 | struct iscsi_conn *conn) |
e48354ce | 1588 | { |
9977bb18 | 1589 | struct iscsi_param_list *param_list = conn->param_list; |
e48354ce NB |
1590 | char *tmpbuf, *start = NULL, *end = NULL; |
1591 | ||
1592 | tmpbuf = kzalloc(length + 1, GFP_KERNEL); | |
1593 | if (!tmpbuf) { | |
1594 | pr_err("Unable to allocate memory for tmpbuf.\n"); | |
1595 | return -1; | |
1596 | } | |
1597 | ||
1598 | memcpy(tmpbuf, textbuf, length); | |
1599 | tmpbuf[length] = '\0'; | |
1600 | start = tmpbuf; | |
1601 | end = (start + length); | |
1602 | ||
1603 | while (start < end) { | |
1604 | char *key, *value; | |
1605 | struct iscsi_param *param; | |
1606 | ||
1607 | if (iscsi_extract_key_value(start, &key, &value) < 0) { | |
1608 | kfree(tmpbuf); | |
1609 | return -1; | |
1610 | } | |
1611 | ||
1612 | pr_debug("Got key: %s=%s\n", key, value); | |
1613 | ||
1614 | if (phase & PHASE_SECURITY) { | |
1615 | if (iscsi_check_for_auth_key(key) > 0) { | |
e48354ce NB |
1616 | kfree(tmpbuf); |
1617 | return 1; | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | param = iscsi_check_key(key, phase, sender, param_list); | |
1622 | if (!param) { | |
1623 | if (iscsi_add_notunderstood_response(key, | |
1624 | value, param_list) < 0) { | |
1625 | kfree(tmpbuf); | |
1626 | return -1; | |
1627 | } | |
1628 | start += strlen(key) + strlen(value) + 2; | |
1629 | continue; | |
1630 | } | |
1631 | if (iscsi_check_value(param, value) < 0) { | |
1632 | kfree(tmpbuf); | |
1633 | return -1; | |
1634 | } | |
1635 | ||
1636 | start += strlen(key) + strlen(value) + 2; | |
1637 | ||
1638 | if (IS_PSTATE_PROPOSER(param)) { | |
1639 | if (iscsi_check_proposer_state(param, value) < 0) { | |
1640 | kfree(tmpbuf); | |
1641 | return -1; | |
1642 | } | |
1643 | SET_PSTATE_RESPONSE_GOT(param); | |
1644 | } else { | |
9977bb18 | 1645 | if (iscsi_check_acceptor_state(param, value, conn) < 0) { |
e48354ce NB |
1646 | kfree(tmpbuf); |
1647 | return -1; | |
1648 | } | |
1649 | SET_PSTATE_ACCEPTOR(param); | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | kfree(tmpbuf); | |
1654 | return 0; | |
1655 | } | |
1656 | ||
1657 | int iscsi_encode_text_output( | |
1658 | u8 phase, | |
1659 | u8 sender, | |
1660 | char *textbuf, | |
1661 | u32 *length, | |
1662 | struct iscsi_param_list *param_list) | |
1663 | { | |
1664 | char *output_buf = NULL; | |
1665 | struct iscsi_extra_response *er; | |
1666 | struct iscsi_param *param; | |
1667 | ||
1668 | output_buf = textbuf + *length; | |
1669 | ||
1670 | if (iscsi_enforce_integrity_rules(phase, param_list) < 0) | |
1671 | return -1; | |
1672 | ||
1673 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1674 | if (!(param->sender & sender)) | |
1675 | continue; | |
1676 | if (IS_PSTATE_ACCEPTOR(param) && | |
1677 | !IS_PSTATE_RESPONSE_SENT(param) && | |
1678 | !IS_PSTATE_REPLY_OPTIONAL(param) && | |
1679 | (param->phase & phase)) { | |
1680 | *length += sprintf(output_buf, "%s=%s", | |
1681 | param->name, param->value); | |
1682 | *length += 1; | |
1683 | output_buf = textbuf + *length; | |
1684 | SET_PSTATE_RESPONSE_SENT(param); | |
1685 | pr_debug("Sending key: %s=%s\n", | |
1686 | param->name, param->value); | |
1687 | continue; | |
1688 | } | |
1689 | if (IS_PSTATE_NEGOTIATE(param) && | |
1690 | !IS_PSTATE_ACCEPTOR(param) && | |
1691 | !IS_PSTATE_PROPOSER(param) && | |
1692 | (param->phase & phase)) { | |
1693 | *length += sprintf(output_buf, "%s=%s", | |
1694 | param->name, param->value); | |
1695 | *length += 1; | |
1696 | output_buf = textbuf + *length; | |
1697 | SET_PSTATE_PROPOSER(param); | |
1698 | iscsi_check_proposer_for_optional_reply(param); | |
1699 | pr_debug("Sending key: %s=%s\n", | |
1700 | param->name, param->value); | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | list_for_each_entry(er, ¶m_list->extra_response_list, er_list) { | |
1705 | *length += sprintf(output_buf, "%s=%s", er->key, er->value); | |
1706 | *length += 1; | |
1707 | output_buf = textbuf + *length; | |
1708 | pr_debug("Sending key: %s=%s\n", er->key, er->value); | |
1709 | } | |
1710 | iscsi_release_extra_responses(param_list); | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
1715 | int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list) | |
1716 | { | |
1717 | int ret = 0; | |
1718 | struct iscsi_param *param; | |
1719 | ||
1720 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1721 | if (IS_PSTATE_NEGOTIATE(param) && | |
1722 | IS_PSTATE_PROPOSER(param) && | |
1723 | !IS_PSTATE_RESPONSE_GOT(param) && | |
1724 | !IS_PSTATE_REPLY_OPTIONAL(param) && | |
1725 | !IS_PHASE_DECLARATIVE(param)) { | |
1726 | pr_err("No response for proposed key \"%s\".\n", | |
1727 | param->name); | |
1728 | ret = -1; | |
1729 | } | |
1730 | } | |
1731 | ||
1732 | return ret; | |
1733 | } | |
1734 | ||
1735 | int iscsi_change_param_value( | |
1736 | char *keyvalue, | |
1737 | struct iscsi_param_list *param_list, | |
1738 | int check_key) | |
1739 | { | |
1740 | char *key = NULL, *value = NULL; | |
1741 | struct iscsi_param *param; | |
1742 | int sender = 0; | |
1743 | ||
1744 | if (iscsi_extract_key_value(keyvalue, &key, &value) < 0) | |
1745 | return -1; | |
1746 | ||
1747 | if (!check_key) { | |
1748 | param = __iscsi_check_key(keyvalue, sender, param_list); | |
1749 | if (!param) | |
1750 | return -1; | |
1751 | } else { | |
1752 | param = iscsi_check_key(keyvalue, 0, sender, param_list); | |
1753 | if (!param) | |
1754 | return -1; | |
1755 | ||
1756 | param->set_param = 1; | |
1757 | if (iscsi_check_value(param, value) < 0) { | |
1758 | param->set_param = 0; | |
1759 | return -1; | |
1760 | } | |
1761 | param->set_param = 0; | |
1762 | } | |
1763 | ||
1764 | if (iscsi_update_param_value(param, value) < 0) | |
1765 | return -1; | |
1766 | ||
1767 | return 0; | |
1768 | } | |
1769 | ||
1770 | void iscsi_set_connection_parameters( | |
1771 | struct iscsi_conn_ops *ops, | |
1772 | struct iscsi_param_list *param_list) | |
1773 | { | |
1774 | char *tmpptr; | |
1775 | struct iscsi_param *param; | |
1776 | ||
1777 | pr_debug("---------------------------------------------------" | |
1778 | "---------------\n"); | |
1779 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
e004cb25 NB |
1780 | /* |
1781 | * Special case to set MAXXMITDATASEGMENTLENGTH from the | |
1782 | * target requested MaxRecvDataSegmentLength, even though | |
1783 | * this key is not sent over the wire. | |
1784 | */ | |
1785 | if (!strcmp(param->name, MAXXMITDATASEGMENTLENGTH)) { | |
03aa2070 NB |
1786 | if (param_list->iser == true) |
1787 | continue; | |
1788 | ||
e004cb25 NB |
1789 | ops->MaxXmitDataSegmentLength = |
1790 | simple_strtoul(param->value, &tmpptr, 0); | |
1791 | pr_debug("MaxXmitDataSegmentLength: %s\n", | |
1792 | param->value); | |
1793 | } | |
1794 | ||
e48354ce NB |
1795 | if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param)) |
1796 | continue; | |
1797 | if (!strcmp(param->name, AUTHMETHOD)) { | |
1798 | pr_debug("AuthMethod: %s\n", | |
1799 | param->value); | |
1800 | } else if (!strcmp(param->name, HEADERDIGEST)) { | |
1801 | ops->HeaderDigest = !strcmp(param->value, CRC32C); | |
1802 | pr_debug("HeaderDigest: %s\n", | |
1803 | param->value); | |
1804 | } else if (!strcmp(param->name, DATADIGEST)) { | |
1805 | ops->DataDigest = !strcmp(param->value, CRC32C); | |
1806 | pr_debug("DataDigest: %s\n", | |
1807 | param->value); | |
1808 | } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { | |
9977bb18 NB |
1809 | /* |
1810 | * At this point iscsi_check_acceptor_state() will have | |
1811 | * set ops->MaxRecvDataSegmentLength from the original | |
1812 | * initiator provided value. | |
1813 | */ | |
1814 | pr_debug("MaxRecvDataSegmentLength: %u\n", | |
1815 | ops->MaxRecvDataSegmentLength); | |
e48354ce NB |
1816 | } else if (!strcmp(param->name, OFMARKER)) { |
1817 | ops->OFMarker = !strcmp(param->value, YES); | |
1818 | pr_debug("OFMarker: %s\n", | |
1819 | param->value); | |
1820 | } else if (!strcmp(param->name, IFMARKER)) { | |
1821 | ops->IFMarker = !strcmp(param->value, YES); | |
1822 | pr_debug("IFMarker: %s\n", | |
1823 | param->value); | |
1824 | } else if (!strcmp(param->name, OFMARKINT)) { | |
1825 | ops->OFMarkInt = | |
1826 | simple_strtoul(param->value, &tmpptr, 0); | |
1827 | pr_debug("OFMarkInt: %s\n", | |
1828 | param->value); | |
1829 | } else if (!strcmp(param->name, IFMARKINT)) { | |
1830 | ops->IFMarkInt = | |
1831 | simple_strtoul(param->value, &tmpptr, 0); | |
1832 | pr_debug("IFMarkInt: %s\n", | |
1833 | param->value); | |
03aa2070 NB |
1834 | } else if (!strcmp(param->name, INITIATORRECVDATASEGMENTLENGTH)) { |
1835 | ops->InitiatorRecvDataSegmentLength = | |
1836 | simple_strtoul(param->value, &tmpptr, 0); | |
1837 | pr_debug("InitiatorRecvDataSegmentLength: %s\n", | |
1838 | param->value); | |
1839 | ops->MaxRecvDataSegmentLength = | |
1840 | ops->InitiatorRecvDataSegmentLength; | |
1841 | pr_debug("Set MRDSL from InitiatorRecvDataSegmentLength\n"); | |
1842 | } else if (!strcmp(param->name, TARGETRECVDATASEGMENTLENGTH)) { | |
1843 | ops->TargetRecvDataSegmentLength = | |
1844 | simple_strtoul(param->value, &tmpptr, 0); | |
1845 | pr_debug("TargetRecvDataSegmentLength: %s\n", | |
1846 | param->value); | |
1847 | ops->MaxXmitDataSegmentLength = | |
1848 | ops->TargetRecvDataSegmentLength; | |
1849 | pr_debug("Set MXDSL from TargetRecvDataSegmentLength\n"); | |
e48354ce NB |
1850 | } |
1851 | } | |
1852 | pr_debug("----------------------------------------------------" | |
1853 | "--------------\n"); | |
1854 | } | |
1855 | ||
1856 | void iscsi_set_session_parameters( | |
1857 | struct iscsi_sess_ops *ops, | |
1858 | struct iscsi_param_list *param_list, | |
1859 | int leading) | |
1860 | { | |
1861 | char *tmpptr; | |
1862 | struct iscsi_param *param; | |
1863 | ||
1864 | pr_debug("----------------------------------------------------" | |
1865 | "--------------\n"); | |
1866 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1867 | if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param)) | |
1868 | continue; | |
1869 | if (!strcmp(param->name, INITIATORNAME)) { | |
1870 | if (!param->value) | |
1871 | continue; | |
1872 | if (leading) | |
1873 | snprintf(ops->InitiatorName, | |
1874 | sizeof(ops->InitiatorName), | |
1875 | "%s", param->value); | |
1876 | pr_debug("InitiatorName: %s\n", | |
1877 | param->value); | |
1878 | } else if (!strcmp(param->name, INITIATORALIAS)) { | |
1879 | if (!param->value) | |
1880 | continue; | |
1881 | snprintf(ops->InitiatorAlias, | |
1882 | sizeof(ops->InitiatorAlias), | |
1883 | "%s", param->value); | |
1884 | pr_debug("InitiatorAlias: %s\n", | |
1885 | param->value); | |
1886 | } else if (!strcmp(param->name, TARGETNAME)) { | |
1887 | if (!param->value) | |
1888 | continue; | |
1889 | if (leading) | |
1890 | snprintf(ops->TargetName, | |
1891 | sizeof(ops->TargetName), | |
1892 | "%s", param->value); | |
1893 | pr_debug("TargetName: %s\n", | |
1894 | param->value); | |
1895 | } else if (!strcmp(param->name, TARGETALIAS)) { | |
1896 | if (!param->value) | |
1897 | continue; | |
1898 | snprintf(ops->TargetAlias, sizeof(ops->TargetAlias), | |
1899 | "%s", param->value); | |
1900 | pr_debug("TargetAlias: %s\n", | |
1901 | param->value); | |
1902 | } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) { | |
1903 | ops->TargetPortalGroupTag = | |
1904 | simple_strtoul(param->value, &tmpptr, 0); | |
1905 | pr_debug("TargetPortalGroupTag: %s\n", | |
1906 | param->value); | |
1907 | } else if (!strcmp(param->name, MAXCONNECTIONS)) { | |
1908 | ops->MaxConnections = | |
1909 | simple_strtoul(param->value, &tmpptr, 0); | |
1910 | pr_debug("MaxConnections: %s\n", | |
1911 | param->value); | |
1912 | } else if (!strcmp(param->name, INITIALR2T)) { | |
1913 | ops->InitialR2T = !strcmp(param->value, YES); | |
1914 | pr_debug("InitialR2T: %s\n", | |
1915 | param->value); | |
1916 | } else if (!strcmp(param->name, IMMEDIATEDATA)) { | |
1917 | ops->ImmediateData = !strcmp(param->value, YES); | |
1918 | pr_debug("ImmediateData: %s\n", | |
1919 | param->value); | |
1920 | } else if (!strcmp(param->name, MAXBURSTLENGTH)) { | |
1921 | ops->MaxBurstLength = | |
1922 | simple_strtoul(param->value, &tmpptr, 0); | |
1923 | pr_debug("MaxBurstLength: %s\n", | |
1924 | param->value); | |
1925 | } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) { | |
1926 | ops->FirstBurstLength = | |
1927 | simple_strtoul(param->value, &tmpptr, 0); | |
1928 | pr_debug("FirstBurstLength: %s\n", | |
1929 | param->value); | |
1930 | } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) { | |
1931 | ops->DefaultTime2Wait = | |
1932 | simple_strtoul(param->value, &tmpptr, 0); | |
1933 | pr_debug("DefaultTime2Wait: %s\n", | |
1934 | param->value); | |
1935 | } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) { | |
1936 | ops->DefaultTime2Retain = | |
1937 | simple_strtoul(param->value, &tmpptr, 0); | |
1938 | pr_debug("DefaultTime2Retain: %s\n", | |
1939 | param->value); | |
1940 | } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) { | |
1941 | ops->MaxOutstandingR2T = | |
1942 | simple_strtoul(param->value, &tmpptr, 0); | |
1943 | pr_debug("MaxOutstandingR2T: %s\n", | |
1944 | param->value); | |
1945 | } else if (!strcmp(param->name, DATAPDUINORDER)) { | |
1946 | ops->DataPDUInOrder = !strcmp(param->value, YES); | |
1947 | pr_debug("DataPDUInOrder: %s\n", | |
1948 | param->value); | |
1949 | } else if (!strcmp(param->name, DATASEQUENCEINORDER)) { | |
1950 | ops->DataSequenceInOrder = !strcmp(param->value, YES); | |
1951 | pr_debug("DataSequenceInOrder: %s\n", | |
1952 | param->value); | |
1953 | } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) { | |
1954 | ops->ErrorRecoveryLevel = | |
1955 | simple_strtoul(param->value, &tmpptr, 0); | |
1956 | pr_debug("ErrorRecoveryLevel: %s\n", | |
1957 | param->value); | |
1958 | } else if (!strcmp(param->name, SESSIONTYPE)) { | |
1959 | ops->SessionType = !strcmp(param->value, DISCOVERY); | |
1960 | pr_debug("SessionType: %s\n", | |
1961 | param->value); | |
af40bb0b | 1962 | } else if (!strcmp(param->name, RDMAEXTENSIONS)) { |
03aa2070 NB |
1963 | ops->RDMAExtensions = !strcmp(param->value, YES); |
1964 | pr_debug("RDMAExtensions: %s\n", | |
1965 | param->value); | |
e48354ce NB |
1966 | } |
1967 | } | |
1968 | pr_debug("----------------------------------------------------" | |
1969 | "--------------\n"); | |
1970 | ||
1971 | } |