Commit | Line | Data |
---|---|---|
e48354ce NB |
1 | /******************************************************************************* |
2 | * This file contains the iSCSI Target DataIN value generation functions. | |
3 | * | |
4c76251e | 4 | * (c) Copyright 2007-2013 Datera, Inc. |
e48354ce NB |
5 | * |
6 | * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | ******************************************************************************/ | |
18 | ||
19 | #include <scsi/iscsi_proto.h> | |
20 | ||
67f091f2 | 21 | #include <target/iscsi/iscsi_target_core.h> |
e48354ce NB |
22 | #include "iscsi_target_seq_pdu_list.h" |
23 | #include "iscsi_target_erl1.h" | |
24 | #include "iscsi_target_util.h" | |
25 | #include "iscsi_target.h" | |
26 | #include "iscsi_target_datain_values.h" | |
27 | ||
28 | struct iscsi_datain_req *iscsit_allocate_datain_req(void) | |
29 | { | |
30 | struct iscsi_datain_req *dr; | |
31 | ||
32 | dr = kmem_cache_zalloc(lio_dr_cache, GFP_ATOMIC); | |
33 | if (!dr) { | |
34 | pr_err("Unable to allocate memory for" | |
35 | " struct iscsi_datain_req\n"); | |
36 | return NULL; | |
37 | } | |
8b1e1244 | 38 | INIT_LIST_HEAD(&dr->cmd_datain_node); |
e48354ce NB |
39 | |
40 | return dr; | |
41 | } | |
42 | ||
43 | void iscsit_attach_datain_req(struct iscsi_cmd *cmd, struct iscsi_datain_req *dr) | |
44 | { | |
45 | spin_lock(&cmd->datain_lock); | |
8b1e1244 | 46 | list_add_tail(&dr->cmd_datain_node, &cmd->datain_list); |
e48354ce NB |
47 | spin_unlock(&cmd->datain_lock); |
48 | } | |
49 | ||
50 | void iscsit_free_datain_req(struct iscsi_cmd *cmd, struct iscsi_datain_req *dr) | |
51 | { | |
52 | spin_lock(&cmd->datain_lock); | |
8b1e1244 | 53 | list_del(&dr->cmd_datain_node); |
e48354ce NB |
54 | spin_unlock(&cmd->datain_lock); |
55 | ||
56 | kmem_cache_free(lio_dr_cache, dr); | |
57 | } | |
58 | ||
59 | void iscsit_free_all_datain_reqs(struct iscsi_cmd *cmd) | |
60 | { | |
61 | struct iscsi_datain_req *dr, *dr_tmp; | |
62 | ||
63 | spin_lock(&cmd->datain_lock); | |
8b1e1244 AG |
64 | list_for_each_entry_safe(dr, dr_tmp, &cmd->datain_list, cmd_datain_node) { |
65 | list_del(&dr->cmd_datain_node); | |
e48354ce NB |
66 | kmem_cache_free(lio_dr_cache, dr); |
67 | } | |
68 | spin_unlock(&cmd->datain_lock); | |
69 | } | |
70 | ||
71 | struct iscsi_datain_req *iscsit_get_datain_req(struct iscsi_cmd *cmd) | |
72 | { | |
e48354ce NB |
73 | if (list_empty(&cmd->datain_list)) { |
74 | pr_err("cmd->datain_list is empty for ITT:" | |
75 | " 0x%08x\n", cmd->init_task_tag); | |
76 | return NULL; | |
77 | } | |
e48354ce | 78 | |
8b1e1244 AG |
79 | return list_first_entry(&cmd->datain_list, struct iscsi_datain_req, |
80 | cmd_datain_node); | |
e48354ce NB |
81 | } |
82 | ||
83 | /* | |
84 | * For Normal and Recovery DataSequenceInOrder=Yes and DataPDUInOrder=Yes. | |
85 | */ | |
86 | static struct iscsi_datain_req *iscsit_set_datain_values_yes_and_yes( | |
87 | struct iscsi_cmd *cmd, | |
88 | struct iscsi_datain *datain) | |
89 | { | |
90 | u32 next_burst_len, read_data_done, read_data_left; | |
91 | struct iscsi_conn *conn = cmd->conn; | |
92 | struct iscsi_datain_req *dr; | |
93 | ||
94 | dr = iscsit_get_datain_req(cmd); | |
95 | if (!dr) | |
96 | return NULL; | |
97 | ||
98 | if (dr->recovery && dr->generate_recovery_values) { | |
99 | if (iscsit_create_recovery_datain_values_datasequenceinorder_yes( | |
100 | cmd, dr) < 0) | |
101 | return NULL; | |
102 | ||
103 | dr->generate_recovery_values = 0; | |
104 | } | |
105 | ||
106 | next_burst_len = (!dr->recovery) ? | |
107 | cmd->next_burst_len : dr->next_burst_len; | |
108 | read_data_done = (!dr->recovery) ? | |
109 | cmd->read_data_done : dr->read_data_done; | |
110 | ||
ebf1d95c | 111 | read_data_left = (cmd->se_cmd.data_length - read_data_done); |
e48354ce NB |
112 | if (!read_data_left) { |
113 | pr_err("ITT: 0x%08x read_data_left is zero!\n", | |
114 | cmd->init_task_tag); | |
115 | return NULL; | |
116 | } | |
117 | ||
118 | if ((read_data_left <= conn->conn_ops->MaxRecvDataSegmentLength) && | |
119 | (read_data_left <= (conn->sess->sess_ops->MaxBurstLength - | |
120 | next_burst_len))) { | |
121 | datain->length = read_data_left; | |
122 | ||
123 | datain->flags |= (ISCSI_FLAG_CMD_FINAL | ISCSI_FLAG_DATA_STATUS); | |
124 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
125 | datain->flags |= ISCSI_FLAG_DATA_ACK; | |
126 | } else { | |
127 | if ((next_burst_len + | |
128 | conn->conn_ops->MaxRecvDataSegmentLength) < | |
129 | conn->sess->sess_ops->MaxBurstLength) { | |
130 | datain->length = | |
131 | conn->conn_ops->MaxRecvDataSegmentLength; | |
132 | next_burst_len += datain->length; | |
133 | } else { | |
134 | datain->length = (conn->sess->sess_ops->MaxBurstLength - | |
135 | next_burst_len); | |
136 | next_burst_len = 0; | |
137 | ||
138 | datain->flags |= ISCSI_FLAG_CMD_FINAL; | |
139 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
140 | datain->flags |= ISCSI_FLAG_DATA_ACK; | |
141 | } | |
142 | } | |
143 | ||
144 | datain->data_sn = (!dr->recovery) ? cmd->data_sn++ : dr->data_sn++; | |
145 | datain->offset = read_data_done; | |
146 | ||
147 | if (!dr->recovery) { | |
148 | cmd->next_burst_len = next_burst_len; | |
149 | cmd->read_data_done += datain->length; | |
150 | } else { | |
151 | dr->next_burst_len = next_burst_len; | |
152 | dr->read_data_done += datain->length; | |
153 | } | |
154 | ||
155 | if (!dr->recovery) { | |
156 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) | |
157 | dr->dr_complete = DATAIN_COMPLETE_NORMAL; | |
158 | ||
159 | return dr; | |
160 | } | |
161 | ||
162 | if (!dr->runlength) { | |
163 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) { | |
164 | dr->dr_complete = | |
165 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
166 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
167 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
168 | } | |
169 | } else { | |
170 | if ((dr->begrun + dr->runlength) == dr->data_sn) { | |
171 | dr->dr_complete = | |
172 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
173 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
174 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
175 | } | |
176 | } | |
177 | ||
178 | return dr; | |
179 | } | |
180 | ||
181 | /* | |
182 | * For Normal and Recovery DataSequenceInOrder=No and DataPDUInOrder=Yes. | |
183 | */ | |
184 | static struct iscsi_datain_req *iscsit_set_datain_values_no_and_yes( | |
185 | struct iscsi_cmd *cmd, | |
186 | struct iscsi_datain *datain) | |
187 | { | |
188 | u32 offset, read_data_done, read_data_left, seq_send_order; | |
189 | struct iscsi_conn *conn = cmd->conn; | |
190 | struct iscsi_datain_req *dr; | |
191 | struct iscsi_seq *seq; | |
192 | ||
193 | dr = iscsit_get_datain_req(cmd); | |
194 | if (!dr) | |
195 | return NULL; | |
196 | ||
197 | if (dr->recovery && dr->generate_recovery_values) { | |
198 | if (iscsit_create_recovery_datain_values_datasequenceinorder_no( | |
199 | cmd, dr) < 0) | |
200 | return NULL; | |
201 | ||
202 | dr->generate_recovery_values = 0; | |
203 | } | |
204 | ||
205 | read_data_done = (!dr->recovery) ? | |
206 | cmd->read_data_done : dr->read_data_done; | |
207 | seq_send_order = (!dr->recovery) ? | |
208 | cmd->seq_send_order : dr->seq_send_order; | |
209 | ||
ebf1d95c | 210 | read_data_left = (cmd->se_cmd.data_length - read_data_done); |
e48354ce NB |
211 | if (!read_data_left) { |
212 | pr_err("ITT: 0x%08x read_data_left is zero!\n", | |
213 | cmd->init_task_tag); | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | seq = iscsit_get_seq_holder_for_datain(cmd, seq_send_order); | |
218 | if (!seq) | |
219 | return NULL; | |
220 | ||
221 | seq->sent = 1; | |
222 | ||
223 | if (!dr->recovery && !seq->next_burst_len) | |
224 | seq->first_datasn = cmd->data_sn; | |
225 | ||
226 | offset = (seq->offset + seq->next_burst_len); | |
227 | ||
228 | if ((offset + conn->conn_ops->MaxRecvDataSegmentLength) >= | |
ebf1d95c AG |
229 | cmd->se_cmd.data_length) { |
230 | datain->length = (cmd->se_cmd.data_length - offset); | |
e48354ce NB |
231 | datain->offset = offset; |
232 | ||
233 | datain->flags |= ISCSI_FLAG_CMD_FINAL; | |
234 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
235 | datain->flags |= ISCSI_FLAG_DATA_ACK; | |
236 | ||
237 | seq->next_burst_len = 0; | |
238 | seq_send_order++; | |
239 | } else { | |
240 | if ((seq->next_burst_len + | |
241 | conn->conn_ops->MaxRecvDataSegmentLength) < | |
242 | conn->sess->sess_ops->MaxBurstLength) { | |
243 | datain->length = | |
244 | conn->conn_ops->MaxRecvDataSegmentLength; | |
245 | datain->offset = (seq->offset + seq->next_burst_len); | |
246 | ||
247 | seq->next_burst_len += datain->length; | |
248 | } else { | |
249 | datain->length = (conn->sess->sess_ops->MaxBurstLength - | |
250 | seq->next_burst_len); | |
251 | datain->offset = (seq->offset + seq->next_burst_len); | |
252 | ||
253 | datain->flags |= ISCSI_FLAG_CMD_FINAL; | |
254 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
255 | datain->flags |= ISCSI_FLAG_DATA_ACK; | |
256 | ||
257 | seq->next_burst_len = 0; | |
258 | seq_send_order++; | |
259 | } | |
260 | } | |
261 | ||
ebf1d95c | 262 | if ((read_data_done + datain->length) == cmd->se_cmd.data_length) |
e48354ce NB |
263 | datain->flags |= ISCSI_FLAG_DATA_STATUS; |
264 | ||
265 | datain->data_sn = (!dr->recovery) ? cmd->data_sn++ : dr->data_sn++; | |
266 | if (!dr->recovery) { | |
267 | cmd->seq_send_order = seq_send_order; | |
268 | cmd->read_data_done += datain->length; | |
269 | } else { | |
270 | dr->seq_send_order = seq_send_order; | |
271 | dr->read_data_done += datain->length; | |
272 | } | |
273 | ||
274 | if (!dr->recovery) { | |
275 | if (datain->flags & ISCSI_FLAG_CMD_FINAL) | |
276 | seq->last_datasn = datain->data_sn; | |
277 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) | |
278 | dr->dr_complete = DATAIN_COMPLETE_NORMAL; | |
279 | ||
280 | return dr; | |
281 | } | |
282 | ||
283 | if (!dr->runlength) { | |
284 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) { | |
285 | dr->dr_complete = | |
286 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
287 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
288 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
289 | } | |
290 | } else { | |
291 | if ((dr->begrun + dr->runlength) == dr->data_sn) { | |
292 | dr->dr_complete = | |
293 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
294 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
295 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
296 | } | |
297 | } | |
298 | ||
299 | return dr; | |
300 | } | |
301 | ||
302 | /* | |
303 | * For Normal and Recovery DataSequenceInOrder=Yes and DataPDUInOrder=No. | |
304 | */ | |
305 | static struct iscsi_datain_req *iscsit_set_datain_values_yes_and_no( | |
306 | struct iscsi_cmd *cmd, | |
307 | struct iscsi_datain *datain) | |
308 | { | |
309 | u32 next_burst_len, read_data_done, read_data_left; | |
310 | struct iscsi_conn *conn = cmd->conn; | |
311 | struct iscsi_datain_req *dr; | |
312 | struct iscsi_pdu *pdu; | |
313 | ||
314 | dr = iscsit_get_datain_req(cmd); | |
315 | if (!dr) | |
316 | return NULL; | |
317 | ||
318 | if (dr->recovery && dr->generate_recovery_values) { | |
319 | if (iscsit_create_recovery_datain_values_datasequenceinorder_yes( | |
320 | cmd, dr) < 0) | |
321 | return NULL; | |
322 | ||
323 | dr->generate_recovery_values = 0; | |
324 | } | |
325 | ||
326 | next_burst_len = (!dr->recovery) ? | |
327 | cmd->next_burst_len : dr->next_burst_len; | |
328 | read_data_done = (!dr->recovery) ? | |
329 | cmd->read_data_done : dr->read_data_done; | |
330 | ||
ebf1d95c | 331 | read_data_left = (cmd->se_cmd.data_length - read_data_done); |
e48354ce NB |
332 | if (!read_data_left) { |
333 | pr_err("ITT: 0x%08x read_data_left is zero!\n", | |
334 | cmd->init_task_tag); | |
335 | return dr; | |
336 | } | |
337 | ||
338 | pdu = iscsit_get_pdu_holder_for_seq(cmd, NULL); | |
339 | if (!pdu) | |
340 | return dr; | |
341 | ||
ebf1d95c | 342 | if ((read_data_done + pdu->length) == cmd->se_cmd.data_length) { |
e48354ce NB |
343 | pdu->flags |= (ISCSI_FLAG_CMD_FINAL | ISCSI_FLAG_DATA_STATUS); |
344 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
345 | pdu->flags |= ISCSI_FLAG_DATA_ACK; | |
346 | ||
347 | next_burst_len = 0; | |
348 | } else { | |
349 | if ((next_burst_len + conn->conn_ops->MaxRecvDataSegmentLength) < | |
350 | conn->sess->sess_ops->MaxBurstLength) | |
351 | next_burst_len += pdu->length; | |
352 | else { | |
353 | pdu->flags |= ISCSI_FLAG_CMD_FINAL; | |
354 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
355 | pdu->flags |= ISCSI_FLAG_DATA_ACK; | |
356 | ||
357 | next_burst_len = 0; | |
358 | } | |
359 | } | |
360 | ||
361 | pdu->data_sn = (!dr->recovery) ? cmd->data_sn++ : dr->data_sn++; | |
362 | if (!dr->recovery) { | |
363 | cmd->next_burst_len = next_burst_len; | |
364 | cmd->read_data_done += pdu->length; | |
365 | } else { | |
366 | dr->next_burst_len = next_burst_len; | |
367 | dr->read_data_done += pdu->length; | |
368 | } | |
369 | ||
370 | datain->flags = pdu->flags; | |
371 | datain->length = pdu->length; | |
372 | datain->offset = pdu->offset; | |
373 | datain->data_sn = pdu->data_sn; | |
374 | ||
375 | if (!dr->recovery) { | |
376 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) | |
377 | dr->dr_complete = DATAIN_COMPLETE_NORMAL; | |
378 | ||
379 | return dr; | |
380 | } | |
381 | ||
382 | if (!dr->runlength) { | |
383 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) { | |
384 | dr->dr_complete = | |
385 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
386 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
387 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
388 | } | |
389 | } else { | |
390 | if ((dr->begrun + dr->runlength) == dr->data_sn) { | |
391 | dr->dr_complete = | |
392 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
393 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
394 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
395 | } | |
396 | } | |
397 | ||
398 | return dr; | |
399 | } | |
400 | ||
401 | /* | |
402 | * For Normal and Recovery DataSequenceInOrder=No and DataPDUInOrder=No. | |
403 | */ | |
404 | static struct iscsi_datain_req *iscsit_set_datain_values_no_and_no( | |
405 | struct iscsi_cmd *cmd, | |
406 | struct iscsi_datain *datain) | |
407 | { | |
408 | u32 read_data_done, read_data_left, seq_send_order; | |
409 | struct iscsi_conn *conn = cmd->conn; | |
410 | struct iscsi_datain_req *dr; | |
411 | struct iscsi_pdu *pdu; | |
412 | struct iscsi_seq *seq = NULL; | |
413 | ||
414 | dr = iscsit_get_datain_req(cmd); | |
415 | if (!dr) | |
416 | return NULL; | |
417 | ||
418 | if (dr->recovery && dr->generate_recovery_values) { | |
419 | if (iscsit_create_recovery_datain_values_datasequenceinorder_no( | |
420 | cmd, dr) < 0) | |
421 | return NULL; | |
422 | ||
423 | dr->generate_recovery_values = 0; | |
424 | } | |
425 | ||
426 | read_data_done = (!dr->recovery) ? | |
427 | cmd->read_data_done : dr->read_data_done; | |
428 | seq_send_order = (!dr->recovery) ? | |
429 | cmd->seq_send_order : dr->seq_send_order; | |
430 | ||
ebf1d95c | 431 | read_data_left = (cmd->se_cmd.data_length - read_data_done); |
e48354ce NB |
432 | if (!read_data_left) { |
433 | pr_err("ITT: 0x%08x read_data_left is zero!\n", | |
434 | cmd->init_task_tag); | |
435 | return NULL; | |
436 | } | |
437 | ||
438 | seq = iscsit_get_seq_holder_for_datain(cmd, seq_send_order); | |
439 | if (!seq) | |
440 | return NULL; | |
441 | ||
442 | seq->sent = 1; | |
443 | ||
444 | if (!dr->recovery && !seq->next_burst_len) | |
445 | seq->first_datasn = cmd->data_sn; | |
446 | ||
447 | pdu = iscsit_get_pdu_holder_for_seq(cmd, seq); | |
448 | if (!pdu) | |
449 | return NULL; | |
450 | ||
451 | if (seq->pdu_send_order == seq->pdu_count) { | |
452 | pdu->flags |= ISCSI_FLAG_CMD_FINAL; | |
453 | if (conn->sess->sess_ops->ErrorRecoveryLevel > 0) | |
454 | pdu->flags |= ISCSI_FLAG_DATA_ACK; | |
455 | ||
456 | seq->next_burst_len = 0; | |
457 | seq_send_order++; | |
458 | } else | |
459 | seq->next_burst_len += pdu->length; | |
460 | ||
ebf1d95c | 461 | if ((read_data_done + pdu->length) == cmd->se_cmd.data_length) |
e48354ce NB |
462 | pdu->flags |= ISCSI_FLAG_DATA_STATUS; |
463 | ||
464 | pdu->data_sn = (!dr->recovery) ? cmd->data_sn++ : dr->data_sn++; | |
465 | if (!dr->recovery) { | |
466 | cmd->seq_send_order = seq_send_order; | |
467 | cmd->read_data_done += pdu->length; | |
468 | } else { | |
469 | dr->seq_send_order = seq_send_order; | |
470 | dr->read_data_done += pdu->length; | |
471 | } | |
472 | ||
473 | datain->flags = pdu->flags; | |
474 | datain->length = pdu->length; | |
475 | datain->offset = pdu->offset; | |
476 | datain->data_sn = pdu->data_sn; | |
477 | ||
478 | if (!dr->recovery) { | |
479 | if (datain->flags & ISCSI_FLAG_CMD_FINAL) | |
480 | seq->last_datasn = datain->data_sn; | |
481 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) | |
482 | dr->dr_complete = DATAIN_COMPLETE_NORMAL; | |
483 | ||
484 | return dr; | |
485 | } | |
486 | ||
487 | if (!dr->runlength) { | |
488 | if (datain->flags & ISCSI_FLAG_DATA_STATUS) { | |
489 | dr->dr_complete = | |
490 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
491 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
492 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
493 | } | |
494 | } else { | |
495 | if ((dr->begrun + dr->runlength) == dr->data_sn) { | |
496 | dr->dr_complete = | |
497 | (dr->recovery == DATAIN_WITHIN_COMMAND_RECOVERY) ? | |
498 | DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY : | |
499 | DATAIN_COMPLETE_CONNECTION_RECOVERY; | |
500 | } | |
501 | } | |
502 | ||
503 | return dr; | |
504 | } | |
505 | ||
506 | struct iscsi_datain_req *iscsit_get_datain_values( | |
507 | struct iscsi_cmd *cmd, | |
508 | struct iscsi_datain *datain) | |
509 | { | |
510 | struct iscsi_conn *conn = cmd->conn; | |
511 | ||
512 | if (conn->sess->sess_ops->DataSequenceInOrder && | |
513 | conn->sess->sess_ops->DataPDUInOrder) | |
514 | return iscsit_set_datain_values_yes_and_yes(cmd, datain); | |
515 | else if (!conn->sess->sess_ops->DataSequenceInOrder && | |
516 | conn->sess->sess_ops->DataPDUInOrder) | |
517 | return iscsit_set_datain_values_no_and_yes(cmd, datain); | |
518 | else if (conn->sess->sess_ops->DataSequenceInOrder && | |
519 | !conn->sess->sess_ops->DataPDUInOrder) | |
520 | return iscsit_set_datain_values_yes_and_no(cmd, datain); | |
521 | else if (!conn->sess->sess_ops->DataSequenceInOrder && | |
522 | !conn->sess->sess_ops->DataPDUInOrder) | |
523 | return iscsit_set_datain_values_no_and_no(cmd, datain); | |
524 | ||
525 | return NULL; | |
526 | } |