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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, ¶m_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(¶m->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(¶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 | ||
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, ¶m_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, ¶m_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 *new_param = NULL, *param = NULL; | |
549 | struct iscsi_param_list *param_list = NULL; | |
550 | ||
551 | param_list = kzalloc(sizeof(struct iscsi_param_list), GFP_KERNEL); | |
552 | if (!param_list) { | |
553 | pr_err("Unable to allocate memory for" | |
554 | " struct iscsi_param_list.\n"); | |
555 | goto err_out; | |
556 | } | |
557 | INIT_LIST_HEAD(¶m_list->param_list); | |
558 | INIT_LIST_HEAD(¶m_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" | |
571 | " struct iscsi_param.\n"); | |
572 | goto err_out; | |
573 | } | |
574 | ||
575 | new_param->set_param = param->set_param; | |
576 | new_param->phase = param->phase; | |
577 | new_param->scope = param->scope; | |
578 | new_param->sender = param->sender; | |
579 | new_param->type = param->type; | |
580 | new_param->use = param->use; | |
581 | new_param->type_range = param->type_range; | |
582 | ||
583 | new_param->name = kzalloc(strlen(param->name) + 1, GFP_KERNEL); | |
584 | if (!new_param->name) { | |
585 | pr_err("Unable to allocate memory for" | |
586 | " parameter name.\n"); | |
587 | goto err_out; | |
588 | } | |
589 | ||
590 | new_param->value = kzalloc(strlen(param->value) + 1, | |
591 | GFP_KERNEL); | |
592 | if (!new_param->value) { | |
593 | pr_err("Unable to allocate memory for" | |
594 | " parameter value.\n"); | |
595 | goto err_out; | |
596 | } | |
597 | ||
598 | memcpy(new_param->name, param->name, strlen(param->name)); | |
599 | new_param->name[strlen(param->name)] = '\0'; | |
600 | memcpy(new_param->value, param->value, strlen(param->value)); | |
601 | new_param->value[strlen(param->value)] = '\0'; | |
602 | ||
603 | list_add_tail(&new_param->p_list, ¶m_list->param_list); | |
604 | } | |
605 | ||
606 | if (!list_empty(¶m_list->param_list)) | |
607 | *dst_param_list = param_list; | |
608 | else { | |
609 | pr_err("No parameters allocated.\n"); | |
610 | goto err_out; | |
611 | } | |
612 | ||
613 | return 0; | |
614 | ||
615 | err_out: | |
616 | iscsi_release_param_list(param_list); | |
617 | return -1; | |
618 | } | |
619 | ||
620 | static void iscsi_release_extra_responses(struct iscsi_param_list *param_list) | |
621 | { | |
622 | struct iscsi_extra_response *er, *er_tmp; | |
623 | ||
624 | list_for_each_entry_safe(er, er_tmp, ¶m_list->extra_response_list, | |
625 | er_list) { | |
626 | list_del(&er->er_list); | |
627 | kfree(er); | |
628 | } | |
629 | } | |
630 | ||
631 | void iscsi_release_param_list(struct iscsi_param_list *param_list) | |
632 | { | |
633 | struct iscsi_param *param, *param_tmp; | |
634 | ||
635 | list_for_each_entry_safe(param, param_tmp, ¶m_list->param_list, | |
636 | p_list) { | |
637 | list_del(¶m->p_list); | |
638 | ||
639 | kfree(param->name); | |
640 | param->name = NULL; | |
641 | kfree(param->value); | |
642 | param->value = NULL; | |
643 | kfree(param); | |
644 | param = NULL; | |
645 | } | |
646 | ||
647 | iscsi_release_extra_responses(param_list); | |
648 | ||
649 | kfree(param_list); | |
650 | } | |
651 | ||
652 | struct iscsi_param *iscsi_find_param_from_key( | |
653 | char *key, | |
654 | struct iscsi_param_list *param_list) | |
655 | { | |
656 | struct iscsi_param *param; | |
657 | ||
658 | if (!key || !param_list) { | |
659 | pr_err("Key or parameter list pointer is NULL.\n"); | |
660 | return NULL; | |
661 | } | |
662 | ||
663 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
664 | if (!strcmp(key, param->name)) | |
665 | return param; | |
666 | } | |
667 | ||
668 | pr_err("Unable to locate key \"%s\".\n", key); | |
669 | return NULL; | |
670 | } | |
671 | ||
672 | int iscsi_extract_key_value(char *textbuf, char **key, char **value) | |
673 | { | |
674 | *value = strchr(textbuf, '='); | |
675 | if (!*value) { | |
676 | pr_err("Unable to locate \"=\" seperator for key," | |
677 | " ignoring request.\n"); | |
678 | return -1; | |
679 | } | |
680 | ||
681 | *key = textbuf; | |
682 | **value = '\0'; | |
683 | *value = *value + 1; | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | int iscsi_update_param_value(struct iscsi_param *param, char *value) | |
689 | { | |
690 | kfree(param->value); | |
691 | ||
692 | param->value = kzalloc(strlen(value) + 1, GFP_KERNEL); | |
693 | if (!param->value) { | |
694 | pr_err("Unable to allocate memory for value.\n"); | |
695 | return -1; | |
696 | } | |
697 | ||
698 | memcpy(param->value, value, strlen(value)); | |
699 | param->value[strlen(value)] = '\0'; | |
700 | ||
701 | pr_debug("iSCSI Parameter updated to %s=%s\n", | |
702 | param->name, param->value); | |
703 | return 0; | |
704 | } | |
705 | ||
706 | static int iscsi_add_notunderstood_response( | |
707 | char *key, | |
708 | char *value, | |
709 | struct iscsi_param_list *param_list) | |
710 | { | |
711 | struct iscsi_extra_response *extra_response; | |
712 | ||
713 | if (strlen(value) > VALUE_MAXLEN) { | |
714 | pr_err("Value for notunderstood key \"%s\" exceeds %d," | |
715 | " protocol error.\n", key, VALUE_MAXLEN); | |
716 | return -1; | |
717 | } | |
718 | ||
719 | extra_response = kzalloc(sizeof(struct iscsi_extra_response), GFP_KERNEL); | |
720 | if (!extra_response) { | |
721 | pr_err("Unable to allocate memory for" | |
722 | " struct iscsi_extra_response.\n"); | |
723 | return -1; | |
724 | } | |
725 | INIT_LIST_HEAD(&extra_response->er_list); | |
726 | ||
727 | strncpy(extra_response->key, key, strlen(key) + 1); | |
728 | strncpy(extra_response->value, NOTUNDERSTOOD, | |
729 | strlen(NOTUNDERSTOOD) + 1); | |
730 | ||
731 | list_add_tail(&extra_response->er_list, | |
732 | ¶m_list->extra_response_list); | |
733 | return 0; | |
734 | } | |
735 | ||
736 | static int iscsi_check_for_auth_key(char *key) | |
737 | { | |
738 | /* | |
739 | * RFC 1994 | |
740 | */ | |
741 | if (!strcmp(key, "CHAP_A") || !strcmp(key, "CHAP_I") || | |
742 | !strcmp(key, "CHAP_C") || !strcmp(key, "CHAP_N") || | |
743 | !strcmp(key, "CHAP_R")) | |
744 | return 1; | |
745 | ||
746 | /* | |
747 | * RFC 2945 | |
748 | */ | |
749 | if (!strcmp(key, "SRP_U") || !strcmp(key, "SRP_N") || | |
750 | !strcmp(key, "SRP_g") || !strcmp(key, "SRP_s") || | |
751 | !strcmp(key, "SRP_A") || !strcmp(key, "SRP_B") || | |
752 | !strcmp(key, "SRP_M") || !strcmp(key, "SRP_HM")) | |
753 | return 1; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
758 | static void iscsi_check_proposer_for_optional_reply(struct iscsi_param *param) | |
759 | { | |
760 | if (IS_TYPE_BOOL_AND(param)) { | |
761 | if (!strcmp(param->value, NO)) | |
762 | SET_PSTATE_REPLY_OPTIONAL(param); | |
763 | } else if (IS_TYPE_BOOL_OR(param)) { | |
764 | if (!strcmp(param->value, YES)) | |
765 | SET_PSTATE_REPLY_OPTIONAL(param); | |
766 | /* | |
767 | * Required for gPXE iSCSI boot client | |
768 | */ | |
769 | if (!strcmp(param->name, IMMEDIATEDATA)) | |
770 | SET_PSTATE_REPLY_OPTIONAL(param); | |
771 | } else if (IS_TYPE_NUMBER(param)) { | |
772 | if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) | |
773 | SET_PSTATE_REPLY_OPTIONAL(param); | |
774 | /* | |
775 | * The GlobalSAN iSCSI Initiator for MacOSX does | |
776 | * not respond to MaxBurstLength, FirstBurstLength, | |
777 | * DefaultTime2Wait or DefaultTime2Retain parameter keys. | |
778 | * So, we set them to 'reply optional' here, and assume the | |
779 | * the defaults from iscsi_parameters.h if the initiator | |
780 | * is not RFC compliant and the keys are not negotiated. | |
781 | */ | |
782 | if (!strcmp(param->name, MAXBURSTLENGTH)) | |
783 | SET_PSTATE_REPLY_OPTIONAL(param); | |
784 | if (!strcmp(param->name, FIRSTBURSTLENGTH)) | |
785 | SET_PSTATE_REPLY_OPTIONAL(param); | |
786 | if (!strcmp(param->name, DEFAULTTIME2WAIT)) | |
787 | SET_PSTATE_REPLY_OPTIONAL(param); | |
788 | if (!strcmp(param->name, DEFAULTTIME2RETAIN)) | |
789 | SET_PSTATE_REPLY_OPTIONAL(param); | |
790 | /* | |
791 | * Required for gPXE iSCSI boot client | |
792 | */ | |
793 | if (!strcmp(param->name, MAXCONNECTIONS)) | |
794 | SET_PSTATE_REPLY_OPTIONAL(param); | |
795 | } else if (IS_PHASE_DECLARATIVE(param)) | |
796 | SET_PSTATE_REPLY_OPTIONAL(param); | |
797 | } | |
798 | ||
799 | static int iscsi_check_boolean_value(struct iscsi_param *param, char *value) | |
800 | { | |
801 | if (strcmp(value, YES) && strcmp(value, NO)) { | |
802 | pr_err("Illegal value for \"%s\", must be either" | |
803 | " \"%s\" or \"%s\".\n", param->name, YES, NO); | |
804 | return -1; | |
805 | } | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | static int iscsi_check_numerical_value(struct iscsi_param *param, char *value_ptr) | |
811 | { | |
812 | char *tmpptr; | |
813 | int value = 0; | |
814 | ||
815 | value = simple_strtoul(value_ptr, &tmpptr, 0); | |
816 | ||
817 | /* #warning FIXME: Fix this */ | |
818 | #if 0 | |
819 | if (strspn(endptr, WHITE_SPACE) != strlen(endptr)) { | |
820 | pr_err("Illegal value \"%s\" for \"%s\".\n", | |
821 | value, param->name); | |
822 | return -1; | |
823 | } | |
824 | #endif | |
825 | if (IS_TYPERANGE_0_TO_2(param)) { | |
826 | if ((value < 0) || (value > 2)) { | |
827 | pr_err("Illegal value for \"%s\", must be" | |
828 | " between 0 and 2.\n", param->name); | |
829 | return -1; | |
830 | } | |
831 | return 0; | |
832 | } | |
833 | if (IS_TYPERANGE_0_TO_3600(param)) { | |
834 | if ((value < 0) || (value > 3600)) { | |
835 | pr_err("Illegal value for \"%s\", must be" | |
836 | " between 0 and 3600.\n", param->name); | |
837 | return -1; | |
838 | } | |
839 | return 0; | |
840 | } | |
841 | if (IS_TYPERANGE_0_TO_32767(param)) { | |
842 | if ((value < 0) || (value > 32767)) { | |
843 | pr_err("Illegal value for \"%s\", must be" | |
844 | " between 0 and 32767.\n", param->name); | |
845 | return -1; | |
846 | } | |
847 | return 0; | |
848 | } | |
849 | if (IS_TYPERANGE_0_TO_65535(param)) { | |
850 | if ((value < 0) || (value > 65535)) { | |
851 | pr_err("Illegal value for \"%s\", must be" | |
852 | " between 0 and 65535.\n", param->name); | |
853 | return -1; | |
854 | } | |
855 | return 0; | |
856 | } | |
857 | if (IS_TYPERANGE_1_TO_65535(param)) { | |
858 | if ((value < 1) || (value > 65535)) { | |
859 | pr_err("Illegal value for \"%s\", must be" | |
860 | " between 1 and 65535.\n", param->name); | |
861 | return -1; | |
862 | } | |
863 | return 0; | |
864 | } | |
865 | if (IS_TYPERANGE_2_TO_3600(param)) { | |
866 | if ((value < 2) || (value > 3600)) { | |
867 | pr_err("Illegal value for \"%s\", must be" | |
868 | " between 2 and 3600.\n", param->name); | |
869 | return -1; | |
870 | } | |
871 | return 0; | |
872 | } | |
873 | if (IS_TYPERANGE_512_TO_16777215(param)) { | |
874 | if ((value < 512) || (value > 16777215)) { | |
875 | pr_err("Illegal value for \"%s\", must be" | |
876 | " between 512 and 16777215.\n", param->name); | |
877 | return -1; | |
878 | } | |
879 | return 0; | |
880 | } | |
881 | ||
882 | return 0; | |
883 | } | |
884 | ||
885 | static int iscsi_check_numerical_range_value(struct iscsi_param *param, char *value) | |
886 | { | |
887 | char *left_val_ptr = NULL, *right_val_ptr = NULL; | |
888 | char *tilde_ptr = NULL, *tmp_ptr = NULL; | |
889 | u32 left_val, right_val, local_left_val, local_right_val; | |
890 | ||
891 | if (strcmp(param->name, IFMARKINT) && | |
892 | strcmp(param->name, OFMARKINT)) { | |
893 | pr_err("Only parameters \"%s\" or \"%s\" may contain a" | |
894 | " numerical range value.\n", IFMARKINT, OFMARKINT); | |
895 | return -1; | |
896 | } | |
897 | ||
898 | if (IS_PSTATE_PROPOSER(param)) | |
899 | return 0; | |
900 | ||
901 | tilde_ptr = strchr(value, '~'); | |
902 | if (!tilde_ptr) { | |
903 | pr_err("Unable to locate numerical range indicator" | |
904 | " \"~\" for \"%s\".\n", param->name); | |
905 | return -1; | |
906 | } | |
907 | *tilde_ptr = '\0'; | |
908 | ||
909 | left_val_ptr = value; | |
910 | right_val_ptr = value + strlen(left_val_ptr) + 1; | |
911 | ||
912 | if (iscsi_check_numerical_value(param, left_val_ptr) < 0) | |
913 | return -1; | |
914 | if (iscsi_check_numerical_value(param, right_val_ptr) < 0) | |
915 | return -1; | |
916 | ||
917 | left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0); | |
918 | right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0); | |
919 | *tilde_ptr = '~'; | |
920 | ||
921 | if (right_val < left_val) { | |
922 | pr_err("Numerical range for parameter \"%s\" contains" | |
923 | " a right value which is less than the left.\n", | |
924 | param->name); | |
925 | return -1; | |
926 | } | |
927 | ||
928 | /* | |
929 | * For now, enforce reasonable defaults for [I,O]FMarkInt. | |
930 | */ | |
931 | tilde_ptr = strchr(param->value, '~'); | |
932 | if (!tilde_ptr) { | |
933 | pr_err("Unable to locate numerical range indicator" | |
934 | " \"~\" for \"%s\".\n", param->name); | |
935 | return -1; | |
936 | } | |
937 | *tilde_ptr = '\0'; | |
938 | ||
939 | left_val_ptr = param->value; | |
940 | right_val_ptr = param->value + strlen(left_val_ptr) + 1; | |
941 | ||
942 | local_left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0); | |
943 | local_right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0); | |
944 | *tilde_ptr = '~'; | |
945 | ||
946 | if (param->set_param) { | |
947 | if ((left_val < local_left_val) || | |
948 | (right_val < local_left_val)) { | |
949 | pr_err("Passed value range \"%u~%u\" is below" | |
950 | " minimum left value \"%u\" for key \"%s\"," | |
951 | " rejecting.\n", left_val, right_val, | |
952 | local_left_val, param->name); | |
953 | return -1; | |
954 | } | |
955 | } else { | |
956 | if ((left_val < local_left_val) && | |
957 | (right_val < local_left_val)) { | |
958 | pr_err("Received value range \"%u~%u\" is" | |
959 | " below minimum left value \"%u\" for key" | |
960 | " \"%s\", rejecting.\n", left_val, right_val, | |
961 | local_left_val, param->name); | |
962 | SET_PSTATE_REJECT(param); | |
963 | if (iscsi_update_param_value(param, REJECT) < 0) | |
964 | return -1; | |
965 | } | |
966 | } | |
967 | ||
968 | return 0; | |
969 | } | |
970 | ||
971 | static int iscsi_check_string_or_list_value(struct iscsi_param *param, char *value) | |
972 | { | |
973 | if (IS_PSTATE_PROPOSER(param)) | |
974 | return 0; | |
975 | ||
976 | if (IS_TYPERANGE_AUTH_PARAM(param)) { | |
977 | if (strcmp(value, KRB5) && strcmp(value, SPKM1) && | |
978 | strcmp(value, SPKM2) && strcmp(value, SRP) && | |
979 | strcmp(value, CHAP) && strcmp(value, NONE)) { | |
980 | pr_err("Illegal value for \"%s\", must be" | |
981 | " \"%s\", \"%s\", \"%s\", \"%s\", \"%s\"" | |
982 | " or \"%s\".\n", param->name, KRB5, | |
983 | SPKM1, SPKM2, SRP, CHAP, NONE); | |
984 | return -1; | |
985 | } | |
986 | } | |
987 | if (IS_TYPERANGE_DIGEST_PARAM(param)) { | |
988 | if (strcmp(value, CRC32C) && strcmp(value, NONE)) { | |
989 | pr_err("Illegal value for \"%s\", must be" | |
990 | " \"%s\" or \"%s\".\n", param->name, | |
991 | CRC32C, NONE); | |
992 | return -1; | |
993 | } | |
994 | } | |
995 | if (IS_TYPERANGE_SESSIONTYPE(param)) { | |
996 | if (strcmp(value, DISCOVERY) && strcmp(value, NORMAL)) { | |
997 | pr_err("Illegal value for \"%s\", must be" | |
998 | " \"%s\" or \"%s\".\n", param->name, | |
999 | DISCOVERY, NORMAL); | |
1000 | return -1; | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | /* | |
1008 | * This function is used to pick a value range number, currently just | |
1009 | * returns the lesser of both right values. | |
1010 | */ | |
1011 | static char *iscsi_get_value_from_number_range( | |
1012 | struct iscsi_param *param, | |
1013 | char *value) | |
1014 | { | |
1015 | char *end_ptr, *tilde_ptr1 = NULL, *tilde_ptr2 = NULL; | |
1016 | u32 acceptor_right_value, proposer_right_value; | |
1017 | ||
1018 | tilde_ptr1 = strchr(value, '~'); | |
1019 | if (!tilde_ptr1) | |
1020 | return NULL; | |
1021 | *tilde_ptr1++ = '\0'; | |
1022 | proposer_right_value = simple_strtoul(tilde_ptr1, &end_ptr, 0); | |
1023 | ||
1024 | tilde_ptr2 = strchr(param->value, '~'); | |
1025 | if (!tilde_ptr2) | |
1026 | return NULL; | |
1027 | *tilde_ptr2++ = '\0'; | |
1028 | acceptor_right_value = simple_strtoul(tilde_ptr2, &end_ptr, 0); | |
1029 | ||
1030 | return (acceptor_right_value >= proposer_right_value) ? | |
1031 | tilde_ptr1 : tilde_ptr2; | |
1032 | } | |
1033 | ||
1034 | static char *iscsi_check_valuelist_for_support( | |
1035 | struct iscsi_param *param, | |
1036 | char *value) | |
1037 | { | |
1038 | char *tmp1 = NULL, *tmp2 = NULL; | |
1039 | char *acceptor_values = NULL, *proposer_values = NULL; | |
1040 | ||
1041 | acceptor_values = param->value; | |
1042 | proposer_values = value; | |
1043 | ||
1044 | do { | |
1045 | if (!proposer_values) | |
1046 | return NULL; | |
1047 | tmp1 = strchr(proposer_values, ','); | |
1048 | if (tmp1) | |
1049 | *tmp1 = '\0'; | |
1050 | acceptor_values = param->value; | |
1051 | do { | |
1052 | if (!acceptor_values) { | |
1053 | if (tmp1) | |
1054 | *tmp1 = ','; | |
1055 | return NULL; | |
1056 | } | |
1057 | tmp2 = strchr(acceptor_values, ','); | |
1058 | if (tmp2) | |
1059 | *tmp2 = '\0'; | |
1060 | if (!acceptor_values || !proposer_values) { | |
1061 | if (tmp1) | |
1062 | *tmp1 = ','; | |
1063 | if (tmp2) | |
1064 | *tmp2 = ','; | |
1065 | return NULL; | |
1066 | } | |
1067 | if (!strcmp(acceptor_values, proposer_values)) { | |
1068 | if (tmp2) | |
1069 | *tmp2 = ','; | |
1070 | goto out; | |
1071 | } | |
1072 | if (tmp2) | |
1073 | *tmp2++ = ','; | |
1074 | ||
1075 | acceptor_values = tmp2; | |
1076 | if (!acceptor_values) | |
1077 | break; | |
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 | ||
1088 | static int iscsi_check_acceptor_state(struct iscsi_param *param, char *value) | |
1089 | { | |
1090 | u8 acceptor_boolean_value = 0, proposer_boolean_value = 0; | |
1091 | char *negoitated_value = NULL; | |
1092 | ||
1093 | if (IS_PSTATE_ACCEPTOR(param)) { | |
1094 | pr_err("Received key \"%s\" twice, protocol error.\n", | |
1095 | param->name); | |
1096 | return -1; | |
1097 | } | |
1098 | ||
1099 | if (IS_PSTATE_REJECT(param)) | |
1100 | return 0; | |
1101 | ||
1102 | if (IS_TYPE_BOOL_AND(param)) { | |
1103 | if (!strcmp(value, YES)) | |
1104 | proposer_boolean_value = 1; | |
1105 | if (!strcmp(param->value, YES)) | |
1106 | acceptor_boolean_value = 1; | |
1107 | if (acceptor_boolean_value && proposer_boolean_value) | |
1108 | do {} while (0); | |
1109 | else { | |
1110 | if (iscsi_update_param_value(param, NO) < 0) | |
1111 | return -1; | |
1112 | if (!proposer_boolean_value) | |
1113 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1114 | } | |
1115 | } else if (IS_TYPE_BOOL_OR(param)) { | |
1116 | if (!strcmp(value, YES)) | |
1117 | proposer_boolean_value = 1; | |
1118 | if (!strcmp(param->value, YES)) | |
1119 | acceptor_boolean_value = 1; | |
1120 | if (acceptor_boolean_value || proposer_boolean_value) { | |
1121 | if (iscsi_update_param_value(param, YES) < 0) | |
1122 | return -1; | |
1123 | if (proposer_boolean_value) | |
1124 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1125 | } | |
1126 | } else if (IS_TYPE_NUMBER(param)) { | |
1127 | char *tmpptr, buf[10]; | |
1128 | u32 acceptor_value = simple_strtoul(param->value, &tmpptr, 0); | |
1129 | u32 proposer_value = simple_strtoul(value, &tmpptr, 0); | |
1130 | ||
1131 | memset(buf, 0, 10); | |
1132 | ||
1133 | if (!strcmp(param->name, MAXCONNECTIONS) || | |
1134 | !strcmp(param->name, MAXBURSTLENGTH) || | |
1135 | !strcmp(param->name, FIRSTBURSTLENGTH) || | |
1136 | !strcmp(param->name, MAXOUTSTANDINGR2T) || | |
1137 | !strcmp(param->name, DEFAULTTIME2RETAIN) || | |
1138 | !strcmp(param->name, ERRORRECOVERYLEVEL)) { | |
1139 | if (proposer_value > acceptor_value) { | |
1140 | sprintf(buf, "%u", acceptor_value); | |
1141 | if (iscsi_update_param_value(param, | |
1142 | &buf[0]) < 0) | |
1143 | return -1; | |
1144 | } else { | |
1145 | if (iscsi_update_param_value(param, value) < 0) | |
1146 | return -1; | |
1147 | } | |
1148 | } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) { | |
1149 | if (acceptor_value > proposer_value) { | |
1150 | sprintf(buf, "%u", acceptor_value); | |
1151 | if (iscsi_update_param_value(param, | |
1152 | &buf[0]) < 0) | |
1153 | return -1; | |
1154 | } else { | |
1155 | if (iscsi_update_param_value(param, value) < 0) | |
1156 | return -1; | |
1157 | } | |
1158 | } else { | |
1159 | if (iscsi_update_param_value(param, value) < 0) | |
1160 | return -1; | |
1161 | } | |
1162 | ||
1163 | if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) | |
1164 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1165 | } else if (IS_TYPE_NUMBER_RANGE(param)) { | |
1166 | negoitated_value = iscsi_get_value_from_number_range( | |
1167 | param, value); | |
1168 | if (!negoitated_value) | |
1169 | return -1; | |
1170 | if (iscsi_update_param_value(param, negoitated_value) < 0) | |
1171 | return -1; | |
1172 | } else if (IS_TYPE_VALUE_LIST(param)) { | |
1173 | negoitated_value = iscsi_check_valuelist_for_support( | |
1174 | param, value); | |
1175 | if (!negoitated_value) { | |
1176 | pr_err("Proposer's value list \"%s\" contains" | |
1177 | " no valid values from Acceptor's value list" | |
1178 | " \"%s\".\n", value, param->value); | |
1179 | return -1; | |
1180 | } | |
1181 | if (iscsi_update_param_value(param, negoitated_value) < 0) | |
1182 | return -1; | |
1183 | } else if (IS_PHASE_DECLARATIVE(param)) { | |
1184 | if (iscsi_update_param_value(param, value) < 0) | |
1185 | return -1; | |
1186 | SET_PSTATE_REPLY_OPTIONAL(param); | |
1187 | } | |
1188 | ||
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | static int iscsi_check_proposer_state(struct iscsi_param *param, char *value) | |
1193 | { | |
1194 | if (IS_PSTATE_RESPONSE_GOT(param)) { | |
1195 | pr_err("Received key \"%s\" twice, protocol error.\n", | |
1196 | param->name); | |
1197 | return -1; | |
1198 | } | |
1199 | ||
1200 | if (IS_TYPE_NUMBER_RANGE(param)) { | |
1201 | u32 left_val = 0, right_val = 0, recieved_value = 0; | |
1202 | char *left_val_ptr = NULL, *right_val_ptr = NULL; | |
1203 | char *tilde_ptr = NULL, *tmp_ptr = NULL; | |
1204 | ||
1205 | if (!strcmp(value, IRRELEVANT) || !strcmp(value, REJECT)) { | |
1206 | if (iscsi_update_param_value(param, value) < 0) | |
1207 | return -1; | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | tilde_ptr = strchr(value, '~'); | |
1212 | if (tilde_ptr) { | |
1213 | pr_err("Illegal \"~\" in response for \"%s\".\n", | |
1214 | param->name); | |
1215 | return -1; | |
1216 | } | |
1217 | tilde_ptr = strchr(param->value, '~'); | |
1218 | if (!tilde_ptr) { | |
1219 | pr_err("Unable to locate numerical range" | |
1220 | " indicator \"~\" for \"%s\".\n", param->name); | |
1221 | return -1; | |
1222 | } | |
1223 | *tilde_ptr = '\0'; | |
1224 | ||
1225 | left_val_ptr = param->value; | |
1226 | right_val_ptr = param->value + strlen(left_val_ptr) + 1; | |
1227 | left_val = simple_strtoul(left_val_ptr, &tmp_ptr, 0); | |
1228 | right_val = simple_strtoul(right_val_ptr, &tmp_ptr, 0); | |
1229 | recieved_value = simple_strtoul(value, &tmp_ptr, 0); | |
1230 | ||
1231 | *tilde_ptr = '~'; | |
1232 | ||
1233 | if ((recieved_value < left_val) || | |
1234 | (recieved_value > right_val)) { | |
1235 | pr_err("Illegal response \"%s=%u\", value must" | |
1236 | " be between %u and %u.\n", param->name, | |
1237 | recieved_value, left_val, right_val); | |
1238 | return -1; | |
1239 | } | |
1240 | } else if (IS_TYPE_VALUE_LIST(param)) { | |
1241 | char *comma_ptr = NULL, *tmp_ptr = NULL; | |
1242 | ||
1243 | comma_ptr = strchr(value, ','); | |
1244 | if (comma_ptr) { | |
1245 | pr_err("Illegal \",\" in response for \"%s\".\n", | |
1246 | param->name); | |
1247 | return -1; | |
1248 | } | |
1249 | ||
1250 | tmp_ptr = iscsi_check_valuelist_for_support(param, value); | |
1251 | if (!tmp_ptr) | |
1252 | return -1; | |
1253 | } | |
1254 | ||
1255 | if (iscsi_update_param_value(param, value) < 0) | |
1256 | return -1; | |
1257 | ||
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int iscsi_check_value(struct iscsi_param *param, char *value) | |
1262 | { | |
1263 | char *comma_ptr = NULL; | |
1264 | ||
1265 | if (!strcmp(value, REJECT)) { | |
1266 | if (!strcmp(param->name, IFMARKINT) || | |
1267 | !strcmp(param->name, OFMARKINT)) { | |
1268 | /* | |
1269 | * Reject is not fatal for [I,O]FMarkInt, and causes | |
1270 | * [I,O]FMarker to be reset to No. (See iSCSI v20 A.3.2) | |
1271 | */ | |
1272 | SET_PSTATE_REJECT(param); | |
1273 | return 0; | |
1274 | } | |
1275 | pr_err("Received %s=%s\n", param->name, value); | |
1276 | return -1; | |
1277 | } | |
1278 | if (!strcmp(value, IRRELEVANT)) { | |
1279 | pr_debug("Received %s=%s\n", param->name, value); | |
1280 | SET_PSTATE_IRRELEVANT(param); | |
1281 | return 0; | |
1282 | } | |
1283 | if (!strcmp(value, NOTUNDERSTOOD)) { | |
1284 | if (!IS_PSTATE_PROPOSER(param)) { | |
1285 | pr_err("Received illegal offer %s=%s\n", | |
1286 | param->name, value); | |
1287 | return -1; | |
1288 | } | |
1289 | ||
1290 | /* #warning FIXME: Add check for X-ExtensionKey here */ | |
1291 | pr_err("Standard iSCSI key \"%s\" cannot be answered" | |
1292 | " with \"%s\", protocol error.\n", param->name, value); | |
1293 | return -1; | |
1294 | } | |
1295 | ||
1296 | do { | |
1297 | comma_ptr = NULL; | |
1298 | comma_ptr = strchr(value, ','); | |
1299 | ||
1300 | if (comma_ptr && !IS_TYPE_VALUE_LIST(param)) { | |
1301 | pr_err("Detected value seperator \",\", but" | |
1302 | " key \"%s\" does not allow a value list," | |
1303 | " protocol error.\n", param->name); | |
1304 | return -1; | |
1305 | } | |
1306 | if (comma_ptr) | |
1307 | *comma_ptr = '\0'; | |
1308 | ||
1309 | if (strlen(value) > VALUE_MAXLEN) { | |
1310 | pr_err("Value for key \"%s\" exceeds %d," | |
1311 | " protocol error.\n", param->name, | |
1312 | VALUE_MAXLEN); | |
1313 | return -1; | |
1314 | } | |
1315 | ||
1316 | if (IS_TYPE_BOOL_AND(param) || IS_TYPE_BOOL_OR(param)) { | |
1317 | if (iscsi_check_boolean_value(param, value) < 0) | |
1318 | return -1; | |
1319 | } else if (IS_TYPE_NUMBER(param)) { | |
1320 | if (iscsi_check_numerical_value(param, value) < 0) | |
1321 | return -1; | |
1322 | } else if (IS_TYPE_NUMBER_RANGE(param)) { | |
1323 | if (iscsi_check_numerical_range_value(param, value) < 0) | |
1324 | return -1; | |
1325 | } else if (IS_TYPE_STRING(param) || IS_TYPE_VALUE_LIST(param)) { | |
1326 | if (iscsi_check_string_or_list_value(param, value) < 0) | |
1327 | return -1; | |
1328 | } else { | |
1329 | pr_err("Huh? 0x%02x\n", param->type); | |
1330 | return -1; | |
1331 | } | |
1332 | ||
1333 | if (comma_ptr) | |
1334 | *comma_ptr++ = ','; | |
1335 | ||
1336 | value = comma_ptr; | |
1337 | } while (value); | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | static struct iscsi_param *__iscsi_check_key( | |
1343 | char *key, | |
1344 | int sender, | |
1345 | struct iscsi_param_list *param_list) | |
1346 | { | |
1347 | struct iscsi_param *param; | |
1348 | ||
1349 | if (strlen(key) > KEY_MAXLEN) { | |
1350 | pr_err("Length of key name \"%s\" exceeds %d.\n", | |
1351 | key, KEY_MAXLEN); | |
1352 | return NULL; | |
1353 | } | |
1354 | ||
1355 | param = iscsi_find_param_from_key(key, param_list); | |
1356 | if (!param) | |
1357 | return NULL; | |
1358 | ||
1359 | if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) { | |
1360 | pr_err("Key \"%s\" may not be sent to %s," | |
1361 | " protocol error.\n", param->name, | |
1362 | (sender & SENDER_RECEIVER) ? "target" : "initiator"); | |
1363 | return NULL; | |
1364 | } | |
1365 | ||
1366 | if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) { | |
1367 | pr_err("Key \"%s\" may not be sent to %s," | |
1368 | " protocol error.\n", param->name, | |
1369 | (sender & SENDER_RECEIVER) ? "initiator" : "target"); | |
1370 | return NULL; | |
1371 | } | |
1372 | ||
1373 | return param; | |
1374 | } | |
1375 | ||
1376 | static struct iscsi_param *iscsi_check_key( | |
1377 | char *key, | |
1378 | int phase, | |
1379 | int sender, | |
1380 | struct iscsi_param_list *param_list) | |
1381 | { | |
1382 | struct iscsi_param *param; | |
1383 | /* | |
1384 | * Key name length must not exceed 63 bytes. (See iSCSI v20 5.1) | |
1385 | */ | |
1386 | if (strlen(key) > KEY_MAXLEN) { | |
1387 | pr_err("Length of key name \"%s\" exceeds %d.\n", | |
1388 | key, KEY_MAXLEN); | |
1389 | return NULL; | |
1390 | } | |
1391 | ||
1392 | param = iscsi_find_param_from_key(key, param_list); | |
1393 | if (!param) | |
1394 | return NULL; | |
1395 | ||
1396 | if ((sender & SENDER_INITIATOR) && !IS_SENDER_INITIATOR(param)) { | |
1397 | pr_err("Key \"%s\" may not be sent to %s," | |
1398 | " protocol error.\n", param->name, | |
1399 | (sender & SENDER_RECEIVER) ? "target" : "initiator"); | |
1400 | return NULL; | |
1401 | } | |
1402 | if ((sender & SENDER_TARGET) && !IS_SENDER_TARGET(param)) { | |
1403 | pr_err("Key \"%s\" may not be sent to %s," | |
1404 | " protocol error.\n", param->name, | |
1405 | (sender & SENDER_RECEIVER) ? "initiator" : "target"); | |
1406 | return NULL; | |
1407 | } | |
1408 | ||
1409 | if (IS_PSTATE_ACCEPTOR(param)) { | |
1410 | pr_err("Key \"%s\" received twice, protocol error.\n", | |
1411 | key); | |
1412 | return NULL; | |
1413 | } | |
1414 | ||
1415 | if (!phase) | |
1416 | return param; | |
1417 | ||
1418 | if (!(param->phase & phase)) { | |
1419 | pr_err("Key \"%s\" may not be negotiated during ", | |
1420 | param->name); | |
1421 | switch (phase) { | |
1422 | case PHASE_SECURITY: | |
1423 | pr_debug("Security phase.\n"); | |
1424 | break; | |
1425 | case PHASE_OPERATIONAL: | |
1426 | pr_debug("Operational phase.\n"); | |
1427 | default: | |
1428 | pr_debug("Unknown phase.\n"); | |
1429 | } | |
1430 | return NULL; | |
1431 | } | |
1432 | ||
1433 | return param; | |
1434 | } | |
1435 | ||
1436 | static int iscsi_enforce_integrity_rules( | |
1437 | u8 phase, | |
1438 | struct iscsi_param_list *param_list) | |
1439 | { | |
1440 | char *tmpptr; | |
1441 | u8 DataSequenceInOrder = 0; | |
1442 | u8 ErrorRecoveryLevel = 0, SessionType = 0; | |
1443 | u8 IFMarker = 0, OFMarker = 0; | |
1444 | u8 IFMarkInt_Reject = 0, OFMarkInt_Reject = 0; | |
1445 | u32 FirstBurstLength = 0, MaxBurstLength = 0; | |
1446 | struct iscsi_param *param = NULL; | |
1447 | ||
1448 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1449 | if (!(param->phase & phase)) | |
1450 | continue; | |
1451 | if (!strcmp(param->name, SESSIONTYPE)) | |
1452 | if (!strcmp(param->value, NORMAL)) | |
1453 | SessionType = 1; | |
1454 | if (!strcmp(param->name, ERRORRECOVERYLEVEL)) | |
1455 | ErrorRecoveryLevel = simple_strtoul(param->value, | |
1456 | &tmpptr, 0); | |
1457 | if (!strcmp(param->name, DATASEQUENCEINORDER)) | |
1458 | if (!strcmp(param->value, YES)) | |
1459 | DataSequenceInOrder = 1; | |
1460 | if (!strcmp(param->name, MAXBURSTLENGTH)) | |
1461 | MaxBurstLength = simple_strtoul(param->value, | |
1462 | &tmpptr, 0); | |
1463 | if (!strcmp(param->name, IFMARKER)) | |
1464 | if (!strcmp(param->value, YES)) | |
1465 | IFMarker = 1; | |
1466 | if (!strcmp(param->name, OFMARKER)) | |
1467 | if (!strcmp(param->value, YES)) | |
1468 | OFMarker = 1; | |
1469 | if (!strcmp(param->name, IFMARKINT)) | |
1470 | if (!strcmp(param->value, REJECT)) | |
1471 | IFMarkInt_Reject = 1; | |
1472 | if (!strcmp(param->name, OFMARKINT)) | |
1473 | if (!strcmp(param->value, REJECT)) | |
1474 | OFMarkInt_Reject = 1; | |
1475 | } | |
1476 | ||
1477 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1478 | if (!(param->phase & phase)) | |
1479 | continue; | |
1480 | if (!SessionType && (!IS_PSTATE_ACCEPTOR(param) && | |
1481 | (strcmp(param->name, IFMARKER) && | |
1482 | strcmp(param->name, OFMARKER) && | |
1483 | strcmp(param->name, IFMARKINT) && | |
1484 | strcmp(param->name, OFMARKINT)))) | |
1485 | continue; | |
1486 | if (!strcmp(param->name, MAXOUTSTANDINGR2T) && | |
1487 | DataSequenceInOrder && (ErrorRecoveryLevel > 0)) { | |
1488 | if (strcmp(param->value, "1")) { | |
1489 | if (iscsi_update_param_value(param, "1") < 0) | |
1490 | return -1; | |
1491 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1492 | param->name, param->value); | |
1493 | } | |
1494 | } | |
1495 | if (!strcmp(param->name, MAXCONNECTIONS) && !SessionType) { | |
1496 | if (strcmp(param->value, "1")) { | |
1497 | if (iscsi_update_param_value(param, "1") < 0) | |
1498 | return -1; | |
1499 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1500 | param->name, param->value); | |
1501 | } | |
1502 | } | |
1503 | if (!strcmp(param->name, FIRSTBURSTLENGTH)) { | |
1504 | FirstBurstLength = simple_strtoul(param->value, | |
1505 | &tmpptr, 0); | |
1506 | if (FirstBurstLength > MaxBurstLength) { | |
1507 | char tmpbuf[10]; | |
1508 | memset(tmpbuf, 0, 10); | |
1509 | sprintf(tmpbuf, "%u", MaxBurstLength); | |
1510 | if (iscsi_update_param_value(param, tmpbuf)) | |
1511 | return -1; | |
1512 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1513 | param->name, param->value); | |
1514 | } | |
1515 | } | |
1516 | if (!strcmp(param->name, IFMARKER) && IFMarkInt_Reject) { | |
1517 | if (iscsi_update_param_value(param, NO) < 0) | |
1518 | return -1; | |
1519 | IFMarker = 0; | |
1520 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1521 | param->name, param->value); | |
1522 | } | |
1523 | if (!strcmp(param->name, OFMARKER) && OFMarkInt_Reject) { | |
1524 | if (iscsi_update_param_value(param, NO) < 0) | |
1525 | return -1; | |
1526 | OFMarker = 0; | |
1527 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1528 | param->name, param->value); | |
1529 | } | |
1530 | if (!strcmp(param->name, IFMARKINT) && !IFMarker) { | |
1531 | if (!strcmp(param->value, REJECT)) | |
1532 | continue; | |
1533 | param->state &= ~PSTATE_NEGOTIATE; | |
1534 | if (iscsi_update_param_value(param, IRRELEVANT) < 0) | |
1535 | return -1; | |
1536 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1537 | param->name, param->value); | |
1538 | } | |
1539 | if (!strcmp(param->name, OFMARKINT) && !OFMarker) { | |
1540 | if (!strcmp(param->value, REJECT)) | |
1541 | continue; | |
1542 | param->state &= ~PSTATE_NEGOTIATE; | |
1543 | if (iscsi_update_param_value(param, IRRELEVANT) < 0) | |
1544 | return -1; | |
1545 | pr_debug("Reset \"%s\" to \"%s\".\n", | |
1546 | param->name, param->value); | |
1547 | } | |
1548 | } | |
1549 | ||
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | int iscsi_decode_text_input( | |
1554 | u8 phase, | |
1555 | u8 sender, | |
1556 | char *textbuf, | |
1557 | u32 length, | |
1558 | struct iscsi_param_list *param_list) | |
1559 | { | |
1560 | char *tmpbuf, *start = NULL, *end = NULL; | |
1561 | ||
1562 | tmpbuf = kzalloc(length + 1, GFP_KERNEL); | |
1563 | if (!tmpbuf) { | |
1564 | pr_err("Unable to allocate memory for tmpbuf.\n"); | |
1565 | return -1; | |
1566 | } | |
1567 | ||
1568 | memcpy(tmpbuf, textbuf, length); | |
1569 | tmpbuf[length] = '\0'; | |
1570 | start = tmpbuf; | |
1571 | end = (start + length); | |
1572 | ||
1573 | while (start < end) { | |
1574 | char *key, *value; | |
1575 | struct iscsi_param *param; | |
1576 | ||
1577 | if (iscsi_extract_key_value(start, &key, &value) < 0) { | |
1578 | kfree(tmpbuf); | |
1579 | return -1; | |
1580 | } | |
1581 | ||
1582 | pr_debug("Got key: %s=%s\n", key, value); | |
1583 | ||
1584 | if (phase & PHASE_SECURITY) { | |
1585 | if (iscsi_check_for_auth_key(key) > 0) { | |
1586 | char *tmpptr = key + strlen(key); | |
1587 | *tmpptr = '='; | |
1588 | kfree(tmpbuf); | |
1589 | return 1; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | param = iscsi_check_key(key, phase, sender, param_list); | |
1594 | if (!param) { | |
1595 | if (iscsi_add_notunderstood_response(key, | |
1596 | value, param_list) < 0) { | |
1597 | kfree(tmpbuf); | |
1598 | return -1; | |
1599 | } | |
1600 | start += strlen(key) + strlen(value) + 2; | |
1601 | continue; | |
1602 | } | |
1603 | if (iscsi_check_value(param, value) < 0) { | |
1604 | kfree(tmpbuf); | |
1605 | return -1; | |
1606 | } | |
1607 | ||
1608 | start += strlen(key) + strlen(value) + 2; | |
1609 | ||
1610 | if (IS_PSTATE_PROPOSER(param)) { | |
1611 | if (iscsi_check_proposer_state(param, value) < 0) { | |
1612 | kfree(tmpbuf); | |
1613 | return -1; | |
1614 | } | |
1615 | SET_PSTATE_RESPONSE_GOT(param); | |
1616 | } else { | |
1617 | if (iscsi_check_acceptor_state(param, value) < 0) { | |
1618 | kfree(tmpbuf); | |
1619 | return -1; | |
1620 | } | |
1621 | SET_PSTATE_ACCEPTOR(param); | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | kfree(tmpbuf); | |
1626 | return 0; | |
1627 | } | |
1628 | ||
1629 | int iscsi_encode_text_output( | |
1630 | u8 phase, | |
1631 | u8 sender, | |
1632 | char *textbuf, | |
1633 | u32 *length, | |
1634 | struct iscsi_param_list *param_list) | |
1635 | { | |
1636 | char *output_buf = NULL; | |
1637 | struct iscsi_extra_response *er; | |
1638 | struct iscsi_param *param; | |
1639 | ||
1640 | output_buf = textbuf + *length; | |
1641 | ||
1642 | if (iscsi_enforce_integrity_rules(phase, param_list) < 0) | |
1643 | return -1; | |
1644 | ||
1645 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1646 | if (!(param->sender & sender)) | |
1647 | continue; | |
1648 | if (IS_PSTATE_ACCEPTOR(param) && | |
1649 | !IS_PSTATE_RESPONSE_SENT(param) && | |
1650 | !IS_PSTATE_REPLY_OPTIONAL(param) && | |
1651 | (param->phase & phase)) { | |
1652 | *length += sprintf(output_buf, "%s=%s", | |
1653 | param->name, param->value); | |
1654 | *length += 1; | |
1655 | output_buf = textbuf + *length; | |
1656 | SET_PSTATE_RESPONSE_SENT(param); | |
1657 | pr_debug("Sending key: %s=%s\n", | |
1658 | param->name, param->value); | |
1659 | continue; | |
1660 | } | |
1661 | if (IS_PSTATE_NEGOTIATE(param) && | |
1662 | !IS_PSTATE_ACCEPTOR(param) && | |
1663 | !IS_PSTATE_PROPOSER(param) && | |
1664 | (param->phase & phase)) { | |
1665 | *length += sprintf(output_buf, "%s=%s", | |
1666 | param->name, param->value); | |
1667 | *length += 1; | |
1668 | output_buf = textbuf + *length; | |
1669 | SET_PSTATE_PROPOSER(param); | |
1670 | iscsi_check_proposer_for_optional_reply(param); | |
1671 | pr_debug("Sending key: %s=%s\n", | |
1672 | param->name, param->value); | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | list_for_each_entry(er, ¶m_list->extra_response_list, er_list) { | |
1677 | *length += sprintf(output_buf, "%s=%s", er->key, er->value); | |
1678 | *length += 1; | |
1679 | output_buf = textbuf + *length; | |
1680 | pr_debug("Sending key: %s=%s\n", er->key, er->value); | |
1681 | } | |
1682 | iscsi_release_extra_responses(param_list); | |
1683 | ||
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | int iscsi_check_negotiated_keys(struct iscsi_param_list *param_list) | |
1688 | { | |
1689 | int ret = 0; | |
1690 | struct iscsi_param *param; | |
1691 | ||
1692 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1693 | if (IS_PSTATE_NEGOTIATE(param) && | |
1694 | IS_PSTATE_PROPOSER(param) && | |
1695 | !IS_PSTATE_RESPONSE_GOT(param) && | |
1696 | !IS_PSTATE_REPLY_OPTIONAL(param) && | |
1697 | !IS_PHASE_DECLARATIVE(param)) { | |
1698 | pr_err("No response for proposed key \"%s\".\n", | |
1699 | param->name); | |
1700 | ret = -1; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | return ret; | |
1705 | } | |
1706 | ||
1707 | int iscsi_change_param_value( | |
1708 | char *keyvalue, | |
1709 | struct iscsi_param_list *param_list, | |
1710 | int check_key) | |
1711 | { | |
1712 | char *key = NULL, *value = NULL; | |
1713 | struct iscsi_param *param; | |
1714 | int sender = 0; | |
1715 | ||
1716 | if (iscsi_extract_key_value(keyvalue, &key, &value) < 0) | |
1717 | return -1; | |
1718 | ||
1719 | if (!check_key) { | |
1720 | param = __iscsi_check_key(keyvalue, sender, param_list); | |
1721 | if (!param) | |
1722 | return -1; | |
1723 | } else { | |
1724 | param = iscsi_check_key(keyvalue, 0, sender, param_list); | |
1725 | if (!param) | |
1726 | return -1; | |
1727 | ||
1728 | param->set_param = 1; | |
1729 | if (iscsi_check_value(param, value) < 0) { | |
1730 | param->set_param = 0; | |
1731 | return -1; | |
1732 | } | |
1733 | param->set_param = 0; | |
1734 | } | |
1735 | ||
1736 | if (iscsi_update_param_value(param, value) < 0) | |
1737 | return -1; | |
1738 | ||
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | void iscsi_set_connection_parameters( | |
1743 | struct iscsi_conn_ops *ops, | |
1744 | struct iscsi_param_list *param_list) | |
1745 | { | |
1746 | char *tmpptr; | |
1747 | struct iscsi_param *param; | |
1748 | ||
1749 | pr_debug("---------------------------------------------------" | |
1750 | "---------------\n"); | |
1751 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1752 | if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param)) | |
1753 | continue; | |
1754 | if (!strcmp(param->name, AUTHMETHOD)) { | |
1755 | pr_debug("AuthMethod: %s\n", | |
1756 | param->value); | |
1757 | } else if (!strcmp(param->name, HEADERDIGEST)) { | |
1758 | ops->HeaderDigest = !strcmp(param->value, CRC32C); | |
1759 | pr_debug("HeaderDigest: %s\n", | |
1760 | param->value); | |
1761 | } else if (!strcmp(param->name, DATADIGEST)) { | |
1762 | ops->DataDigest = !strcmp(param->value, CRC32C); | |
1763 | pr_debug("DataDigest: %s\n", | |
1764 | param->value); | |
1765 | } else if (!strcmp(param->name, MAXRECVDATASEGMENTLENGTH)) { | |
1766 | ops->MaxRecvDataSegmentLength = | |
1767 | simple_strtoul(param->value, &tmpptr, 0); | |
1768 | pr_debug("MaxRecvDataSegmentLength: %s\n", | |
1769 | param->value); | |
1770 | } else if (!strcmp(param->name, OFMARKER)) { | |
1771 | ops->OFMarker = !strcmp(param->value, YES); | |
1772 | pr_debug("OFMarker: %s\n", | |
1773 | param->value); | |
1774 | } else if (!strcmp(param->name, IFMARKER)) { | |
1775 | ops->IFMarker = !strcmp(param->value, YES); | |
1776 | pr_debug("IFMarker: %s\n", | |
1777 | param->value); | |
1778 | } else if (!strcmp(param->name, OFMARKINT)) { | |
1779 | ops->OFMarkInt = | |
1780 | simple_strtoul(param->value, &tmpptr, 0); | |
1781 | pr_debug("OFMarkInt: %s\n", | |
1782 | param->value); | |
1783 | } else if (!strcmp(param->name, IFMARKINT)) { | |
1784 | ops->IFMarkInt = | |
1785 | simple_strtoul(param->value, &tmpptr, 0); | |
1786 | pr_debug("IFMarkInt: %s\n", | |
1787 | param->value); | |
1788 | } | |
1789 | } | |
1790 | pr_debug("----------------------------------------------------" | |
1791 | "--------------\n"); | |
1792 | } | |
1793 | ||
1794 | void iscsi_set_session_parameters( | |
1795 | struct iscsi_sess_ops *ops, | |
1796 | struct iscsi_param_list *param_list, | |
1797 | int leading) | |
1798 | { | |
1799 | char *tmpptr; | |
1800 | struct iscsi_param *param; | |
1801 | ||
1802 | pr_debug("----------------------------------------------------" | |
1803 | "--------------\n"); | |
1804 | list_for_each_entry(param, ¶m_list->param_list, p_list) { | |
1805 | if (!IS_PSTATE_ACCEPTOR(param) && !IS_PSTATE_PROPOSER(param)) | |
1806 | continue; | |
1807 | if (!strcmp(param->name, INITIATORNAME)) { | |
1808 | if (!param->value) | |
1809 | continue; | |
1810 | if (leading) | |
1811 | snprintf(ops->InitiatorName, | |
1812 | sizeof(ops->InitiatorName), | |
1813 | "%s", param->value); | |
1814 | pr_debug("InitiatorName: %s\n", | |
1815 | param->value); | |
1816 | } else if (!strcmp(param->name, INITIATORALIAS)) { | |
1817 | if (!param->value) | |
1818 | continue; | |
1819 | snprintf(ops->InitiatorAlias, | |
1820 | sizeof(ops->InitiatorAlias), | |
1821 | "%s", param->value); | |
1822 | pr_debug("InitiatorAlias: %s\n", | |
1823 | param->value); | |
1824 | } else if (!strcmp(param->name, TARGETNAME)) { | |
1825 | if (!param->value) | |
1826 | continue; | |
1827 | if (leading) | |
1828 | snprintf(ops->TargetName, | |
1829 | sizeof(ops->TargetName), | |
1830 | "%s", param->value); | |
1831 | pr_debug("TargetName: %s\n", | |
1832 | param->value); | |
1833 | } else if (!strcmp(param->name, TARGETALIAS)) { | |
1834 | if (!param->value) | |
1835 | continue; | |
1836 | snprintf(ops->TargetAlias, sizeof(ops->TargetAlias), | |
1837 | "%s", param->value); | |
1838 | pr_debug("TargetAlias: %s\n", | |
1839 | param->value); | |
1840 | } else if (!strcmp(param->name, TARGETPORTALGROUPTAG)) { | |
1841 | ops->TargetPortalGroupTag = | |
1842 | simple_strtoul(param->value, &tmpptr, 0); | |
1843 | pr_debug("TargetPortalGroupTag: %s\n", | |
1844 | param->value); | |
1845 | } else if (!strcmp(param->name, MAXCONNECTIONS)) { | |
1846 | ops->MaxConnections = | |
1847 | simple_strtoul(param->value, &tmpptr, 0); | |
1848 | pr_debug("MaxConnections: %s\n", | |
1849 | param->value); | |
1850 | } else if (!strcmp(param->name, INITIALR2T)) { | |
1851 | ops->InitialR2T = !strcmp(param->value, YES); | |
1852 | pr_debug("InitialR2T: %s\n", | |
1853 | param->value); | |
1854 | } else if (!strcmp(param->name, IMMEDIATEDATA)) { | |
1855 | ops->ImmediateData = !strcmp(param->value, YES); | |
1856 | pr_debug("ImmediateData: %s\n", | |
1857 | param->value); | |
1858 | } else if (!strcmp(param->name, MAXBURSTLENGTH)) { | |
1859 | ops->MaxBurstLength = | |
1860 | simple_strtoul(param->value, &tmpptr, 0); | |
1861 | pr_debug("MaxBurstLength: %s\n", | |
1862 | param->value); | |
1863 | } else if (!strcmp(param->name, FIRSTBURSTLENGTH)) { | |
1864 | ops->FirstBurstLength = | |
1865 | simple_strtoul(param->value, &tmpptr, 0); | |
1866 | pr_debug("FirstBurstLength: %s\n", | |
1867 | param->value); | |
1868 | } else if (!strcmp(param->name, DEFAULTTIME2WAIT)) { | |
1869 | ops->DefaultTime2Wait = | |
1870 | simple_strtoul(param->value, &tmpptr, 0); | |
1871 | pr_debug("DefaultTime2Wait: %s\n", | |
1872 | param->value); | |
1873 | } else if (!strcmp(param->name, DEFAULTTIME2RETAIN)) { | |
1874 | ops->DefaultTime2Retain = | |
1875 | simple_strtoul(param->value, &tmpptr, 0); | |
1876 | pr_debug("DefaultTime2Retain: %s\n", | |
1877 | param->value); | |
1878 | } else if (!strcmp(param->name, MAXOUTSTANDINGR2T)) { | |
1879 | ops->MaxOutstandingR2T = | |
1880 | simple_strtoul(param->value, &tmpptr, 0); | |
1881 | pr_debug("MaxOutstandingR2T: %s\n", | |
1882 | param->value); | |
1883 | } else if (!strcmp(param->name, DATAPDUINORDER)) { | |
1884 | ops->DataPDUInOrder = !strcmp(param->value, YES); | |
1885 | pr_debug("DataPDUInOrder: %s\n", | |
1886 | param->value); | |
1887 | } else if (!strcmp(param->name, DATASEQUENCEINORDER)) { | |
1888 | ops->DataSequenceInOrder = !strcmp(param->value, YES); | |
1889 | pr_debug("DataSequenceInOrder: %s\n", | |
1890 | param->value); | |
1891 | } else if (!strcmp(param->name, ERRORRECOVERYLEVEL)) { | |
1892 | ops->ErrorRecoveryLevel = | |
1893 | simple_strtoul(param->value, &tmpptr, 0); | |
1894 | pr_debug("ErrorRecoveryLevel: %s\n", | |
1895 | param->value); | |
1896 | } else if (!strcmp(param->name, SESSIONTYPE)) { | |
1897 | ops->SessionType = !strcmp(param->value, DISCOVERY); | |
1898 | pr_debug("SessionType: %s\n", | |
1899 | param->value); | |
1900 | } | |
1901 | } | |
1902 | pr_debug("----------------------------------------------------" | |
1903 | "--------------\n"); | |
1904 | ||
1905 | } |