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bnx2i: Rebranding bnx2i driver
[deliverable/linux.git] / drivers / scsi / bnx2i / bnx2i_iscsi.c
CommitLineData
cf4e6363 1/*
f39a7757 2 * bnx2i_iscsi.c: QLogic NetXtreme II iSCSI driver.
cf4e6363 3 *
0b3bf387 4 * Copyright (c) 2006 - 2013 Broadcom Corporation
cf4e6363
MC		 5 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
6 * Copyright (c) 2007, 2008 Mike Christie
f39a7757 7 * Copyright (c) 2014, QLogic Corporation
cf4e6363
MC		 8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation.
12 *
13 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
f39a7757
VC		 14 * Previously Maintained by: Eddie Wai (eddie.wai@broadcom.com)
15 * Maintained by: QLogic-Storage-Upstream@qlogic.com
cf4e6363
MC		 16 */
17
5a0e3ad6 18#include <linux/slab.h>
cf4e6363
MC		 19#include <scsi/scsi_tcq.h>
20#include <scsi/libiscsi.h>
21#include "bnx2i.h"
22
23struct scsi_transport_template *bnx2i_scsi_xport_template;
24struct iscsi_transport bnx2i_iscsi_transport;
25static struct scsi_host_template bnx2i_host_template;
26
27/*
28 * Global endpoint resource info
29 */
30static DEFINE_SPINLOCK(bnx2i_resc_lock); /* protects global resources */
31
b5cf6b63 32DECLARE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu);
cf4e6363
MC		 33
34static int bnx2i_adapter_ready(struct bnx2i_hba *hba)
35{
36 int retval = 0;
37
38 if (!hba || !test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
39 test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) ||
40 test_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state))
41 retval = -EPERM;
42 return retval;
43}
44
45/**
46 * bnx2i_get_write_cmd_bd_idx - identifies various BD bookmarks
47 * @cmd: iscsi cmd struct pointer
48 * @buf_off: absolute buffer offset
49 * @start_bd_off: u32 pointer to return the offset within the BD
50 * indicated by 'start_bd_idx' on which 'buf_off' falls
51 * @start_bd_idx: index of the BD on which 'buf_off' falls
52 *
53 * identifies & marks various bd info for scsi command's imm data,
54 * unsolicited data and the first solicited data seq.
55 */
56static void bnx2i_get_write_cmd_bd_idx(struct bnx2i_cmd *cmd, u32 buf_off,
57 u32 *start_bd_off, u32 *start_bd_idx)
58{
59 struct iscsi_bd *bd_tbl = cmd->io_tbl.bd_tbl;
60 u32 cur_offset = 0;
61 u32 cur_bd_idx = 0;
62
63 if (buf_off) {
64 while (buf_off >= (cur_offset + bd_tbl->buffer_length)) {
65 cur_offset += bd_tbl->buffer_length;
66 cur_bd_idx++;
67 bd_tbl++;
68 }
69 }
70
71 *start_bd_off = buf_off - cur_offset;
72 *start_bd_idx = cur_bd_idx;
73}
74
75/**
76 * bnx2i_setup_write_cmd_bd_info - sets up BD various information
77 * @task: transport layer's cmd struct pointer
78 *
79 * identifies & marks various bd info for scsi command's immediate data,
80 * unsolicited data and first solicited data seq which includes BD start
81 * index & BD buf off. his function takes into account iscsi parameter such
82 * as immediate data and unsolicited data is support on this connection.
83 */
84static void bnx2i_setup_write_cmd_bd_info(struct iscsi_task *task)
85{
86 struct bnx2i_cmd *cmd = task->dd_data;
87 u32 start_bd_offset;
88 u32 start_bd_idx;
89 u32 buffer_offset = 0;
90 u32 cmd_len = cmd->req.total_data_transfer_length;
91
92 /* if ImmediateData is turned off & IntialR2T is turned on,
93 * there will be no immediate or unsolicited data, just return.
94 */
95 if (!iscsi_task_has_unsol_data(task) && !task->imm_count)
96 return;
97
98 /* Immediate data */
99 buffer_offset += task->imm_count;
100 if (task->imm_count == cmd_len)
101 return;
102
103 if (iscsi_task_has_unsol_data(task)) {
104 bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
105 &start_bd_offset, &start_bd_idx);
106 cmd->req.ud_buffer_offset = start_bd_offset;
107 cmd->req.ud_start_bd_index = start_bd_idx;
108 buffer_offset += task->unsol_r2t.data_length;
109 }
110
111 if (buffer_offset != cmd_len) {
112 bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
113 &start_bd_offset, &start_bd_idx);
114 if ((start_bd_offset > task->conn->session->first_burst) ||
115 (start_bd_idx > scsi_sg_count(cmd->scsi_cmd))) {
116 int i = 0;
117
118 iscsi_conn_printk(KERN_ALERT, task->conn,
119 "bnx2i- error, buf offset 0x%x "
120 "bd_valid %d use_sg %d\n",
121 buffer_offset, cmd->io_tbl.bd_valid,
122 scsi_sg_count(cmd->scsi_cmd));
123 for (i = 0; i < cmd->io_tbl.bd_valid; i++)
124 iscsi_conn_printk(KERN_ALERT, task->conn,
125 "bnx2i err, bd[%d]: len %x\n",
126 i, cmd->io_tbl.bd_tbl[i].\
127 buffer_length);
128 }
129 cmd->req.sd_buffer_offset = start_bd_offset;
130 cmd->req.sd_start_bd_index = start_bd_idx;
131 }
132}
133
134
135
136/**
137 * bnx2i_map_scsi_sg - maps IO buffer and prepares the BD table
138 * @hba: adapter instance
139 * @cmd: iscsi cmd struct pointer
140 *
141 * map SG list
142 */
143static int bnx2i_map_scsi_sg(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd)
144{
145 struct scsi_cmnd *sc = cmd->scsi_cmd;
146 struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
147 struct scatterlist *sg;
148 int byte_count = 0;
149 int bd_count = 0;
150 int sg_count;
151 int sg_len;
152 u64 addr;
153 int i;
154
155 BUG_ON(scsi_sg_count(sc) > ISCSI_MAX_BDS_PER_CMD);
156
157 sg_count = scsi_dma_map(sc);
158
159 scsi_for_each_sg(sc, sg, sg_count, i) {
160 sg_len = sg_dma_len(sg);
161 addr = (u64) sg_dma_address(sg);
162 bd[bd_count].buffer_addr_lo = addr & 0xffffffff;
163 bd[bd_count].buffer_addr_hi = addr >> 32;
164 bd[bd_count].buffer_length = sg_len;
165 bd[bd_count].flags = 0;
166 if (bd_count == 0)
167 bd[bd_count].flags = ISCSI_BD_FIRST_IN_BD_CHAIN;
168
169 byte_count += sg_len;
170 bd_count++;
171 }
172
173 if (bd_count)
174 bd[bd_count - 1].flags |= ISCSI_BD_LAST_IN_BD_CHAIN;
175
176 BUG_ON(byte_count != scsi_bufflen(sc));
177 return bd_count;
178}
179
180/**
181 * bnx2i_iscsi_map_sg_list - maps SG list
182 * @cmd: iscsi cmd struct pointer
183 *
184 * creates BD list table for the command
185 */
186static void bnx2i_iscsi_map_sg_list(struct bnx2i_cmd *cmd)
187{
188 int bd_count;
189
190 bd_count = bnx2i_map_scsi_sg(cmd->conn->hba, cmd);
191 if (!bd_count) {
192 struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
193
194 bd[0].buffer_addr_lo = bd[0].buffer_addr_hi = 0;
195 bd[0].buffer_length = bd[0].flags = 0;
196 }
197 cmd->io_tbl.bd_valid = bd_count;
198}
199
200
201/**
202 * bnx2i_iscsi_unmap_sg_list - unmaps SG list
203 * @cmd: iscsi cmd struct pointer
204 *
205 * unmap IO buffers and invalidate the BD table
206 */
207void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd)
208{
209 struct scsi_cmnd *sc = cmd->scsi_cmd;
210
211 if (cmd->io_tbl.bd_valid && sc) {
212 scsi_dma_unmap(sc);
213 cmd->io_tbl.bd_valid = 0;
214 }
215}
216
217static void bnx2i_setup_cmd_wqe_template(struct bnx2i_cmd *cmd)
218{
219 memset(&cmd->req, 0x00, sizeof(cmd->req));
220 cmd->req.op_code = 0xFF;
221 cmd->req.bd_list_addr_lo = (u32) cmd->io_tbl.bd_tbl_dma;
222 cmd->req.bd_list_addr_hi =
223 (u32) ((u64) cmd->io_tbl.bd_tbl_dma >> 32);
224
225}
226
227
228/**
229 * bnx2i_bind_conn_to_iscsi_cid - bind conn structure to 'iscsi_cid'
230 * @hba: pointer to adapter instance
231 * @conn: pointer to iscsi connection
232 * @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
233 *
234 * update iscsi cid table entry with connection pointer. This enables
235 * driver to quickly get hold of connection structure pointer in
236 * completion/interrupt thread using iscsi context ID
237 */
238static int bnx2i_bind_conn_to_iscsi_cid(struct bnx2i_hba *hba,
239 struct bnx2i_conn *bnx2i_conn,
240 u32 iscsi_cid)
241{
242 if (hba && hba->cid_que.conn_cid_tbl[iscsi_cid]) {
243 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
244 "conn bind - entry #%d not free\n", iscsi_cid);
245 return -EBUSY;
246 }
247
248 hba->cid_que.conn_cid_tbl[iscsi_cid] = bnx2i_conn;
249 return 0;
250}
251
252
253/**
254 * bnx2i_get_conn_from_id - maps an iscsi cid to corresponding conn ptr
255 * @hba: pointer to adapter instance
256 * @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
257 */
258struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
259 u16 iscsi_cid)
260{
261 if (!hba->cid_que.conn_cid_tbl) {
262 printk(KERN_ERR "bnx2i: ERROR - missing conn<->cid table\n");
263 return NULL;
264
265 } else if (iscsi_cid >= hba->max_active_conns) {
266 printk(KERN_ERR "bnx2i: wrong cid #%d\n", iscsi_cid);
267 return NULL;
268 }
269 return hba->cid_que.conn_cid_tbl[iscsi_cid];
270}
271
272
273/**
274 * bnx2i_alloc_iscsi_cid - allocates a iscsi_cid from free pool
275 * @hba: pointer to adapter instance
276 */
277static u32 bnx2i_alloc_iscsi_cid(struct bnx2i_hba *hba)
278{
279 int idx;
280
281 if (!hba->cid_que.cid_free_cnt)
282 return -1;
283
284 idx = hba->cid_que.cid_q_cons_idx;
285 hba->cid_que.cid_q_cons_idx++;
286 if (hba->cid_que.cid_q_cons_idx == hba->cid_que.cid_q_max_idx)
287 hba->cid_que.cid_q_cons_idx = 0;
288
289 hba->cid_que.cid_free_cnt--;
290 return hba->cid_que.cid_que[idx];
291}
292
293
294/**
295 * bnx2i_free_iscsi_cid - returns tcp port to free list
296 * @hba: pointer to adapter instance
297 * @iscsi_cid: iscsi context ID to free
298 */
299static void bnx2i_free_iscsi_cid(struct bnx2i_hba *hba, u16 iscsi_cid)
300{
301 int idx;
302
303 if (iscsi_cid == (u16) -1)
304 return;
305
306 hba->cid_que.cid_free_cnt++;
307
308 idx = hba->cid_que.cid_q_prod_idx;
309 hba->cid_que.cid_que[idx] = iscsi_cid;
310 hba->cid_que.conn_cid_tbl[iscsi_cid] = NULL;
311 hba->cid_que.cid_q_prod_idx++;
312 if (hba->cid_que.cid_q_prod_idx == hba->cid_que.cid_q_max_idx)
313 hba->cid_que.cid_q_prod_idx = 0;
314}
315
316
317/**
318 * bnx2i_setup_free_cid_que - sets up free iscsi cid queue
319 * @hba: pointer to adapter instance
320 *
321 * allocates memory for iscsi cid queue & 'cid - conn ptr' mapping table,
322 * and initialize table attributes
323 */
324static int bnx2i_setup_free_cid_que(struct bnx2i_hba *hba)
325{
326 int mem_size;
327 int i;
328
329 mem_size = hba->max_active_conns * sizeof(u32);
330 mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
331
332 hba->cid_que.cid_que_base = kmalloc(mem_size, GFP_KERNEL);
333 if (!hba->cid_que.cid_que_base)
334 return -ENOMEM;
335
336 mem_size = hba->max_active_conns * sizeof(struct bnx2i_conn *);
337 mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
338 hba->cid_que.conn_cid_tbl = kmalloc(mem_size, GFP_KERNEL);
339 if (!hba->cid_que.conn_cid_tbl) {
340 kfree(hba->cid_que.cid_que_base);
341 hba->cid_que.cid_que_base = NULL;
342 return -ENOMEM;
343 }
344
345 hba->cid_que.cid_que = (u32 *)hba->cid_que.cid_que_base;
346 hba->cid_que.cid_q_prod_idx = 0;
347 hba->cid_que.cid_q_cons_idx = 0;
348 hba->cid_que.cid_q_max_idx = hba->max_active_conns;
349 hba->cid_que.cid_free_cnt = hba->max_active_conns;
350
351 for (i = 0; i < hba->max_active_conns; i++) {
352 hba->cid_que.cid_que[i] = i;
353 hba->cid_que.conn_cid_tbl[i] = NULL;
354 }
355 return 0;
356}
357
358
359/**
360 * bnx2i_release_free_cid_que - releases 'iscsi_cid' queue resources
361 * @hba: pointer to adapter instance
362 */
363static void bnx2i_release_free_cid_que(struct bnx2i_hba *hba)
364{
365 kfree(hba->cid_que.cid_que_base);
366 hba->cid_que.cid_que_base = NULL;
367
368 kfree(hba->cid_que.conn_cid_tbl);
369 hba->cid_que.conn_cid_tbl = NULL;
370}
371
372
373/**
374 * bnx2i_alloc_ep - allocates ep structure from global pool
375 * @hba: pointer to adapter instance
376 *
377 * routine allocates a free endpoint structure from global pool and
378 * a tcp port to be used for this connection. Global resource lock,
379 * 'bnx2i_resc_lock' is held while accessing shared global data structures
380 */
381static struct iscsi_endpoint *bnx2i_alloc_ep(struct bnx2i_hba *hba)
382{
383 struct iscsi_endpoint *ep;
384 struct bnx2i_endpoint *bnx2i_ep;
9ae58e14 385 u32 ec_div;
cf4e6363
MC		 386
387 ep = iscsi_create_endpoint(sizeof(*bnx2i_ep));
388 if (!ep) {
389 printk(KERN_ERR "bnx2i: Could not allocate ep\n");
390 return NULL;
391 }
392
393 bnx2i_ep = ep->dd_data;
46012e8b 394 bnx2i_ep->cls_ep = ep;
cf4e6363
MC		 395 INIT_LIST_HEAD(&bnx2i_ep->link);
396 bnx2i_ep->state = EP_STATE_IDLE;
c19dcd01 397 bnx2i_ep->ep_iscsi_cid = (u16) -1;
cf4e6363
MC		 398 bnx2i_ep->hba = hba;
399 bnx2i_ep->hba_age = hba->age;
9ae58e14
EW		 400
401 ec_div = event_coal_div;
402 while (ec_div >>= 1)
403 bnx2i_ep->ec_shift += 1;
404
cf4e6363
MC		 405 hba->ofld_conns_active++;
406 init_waitqueue_head(&bnx2i_ep->ofld_wait);
407 return ep;
408}
409
410
411/**
412 * bnx2i_free_ep - free endpoint
413 * @ep: pointer to iscsi endpoint structure
414 */
415static void bnx2i_free_ep(struct iscsi_endpoint *ep)
416{
417 struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
418 unsigned long flags;
419
420 spin_lock_irqsave(&bnx2i_resc_lock, flags);
421 bnx2i_ep->state = EP_STATE_IDLE;
422 bnx2i_ep->hba->ofld_conns_active--;
423
a91031a6
EW		 424 if (bnx2i_ep->ep_iscsi_cid != (u16) -1)
425 bnx2i_free_iscsi_cid(bnx2i_ep->hba, bnx2i_ep->ep_iscsi_cid);
426
cf4e6363
MC		 427 if (bnx2i_ep->conn) {
428 bnx2i_ep->conn->ep = NULL;
429 bnx2i_ep->conn = NULL;
430 }
431
432 bnx2i_ep->hba = NULL;
433 spin_unlock_irqrestore(&bnx2i_resc_lock, flags);
434 iscsi_destroy_endpoint(ep);
435}
436
437
438/**
439 * bnx2i_alloc_bdt - allocates buffer descriptor (BD) table for the command
440 * @hba: adapter instance pointer
441 * @session: iscsi session pointer
442 * @cmd: iscsi command structure
443 */
444static int bnx2i_alloc_bdt(struct bnx2i_hba *hba, struct iscsi_session *session,
445 struct bnx2i_cmd *cmd)
446{
447 struct io_bdt *io = &cmd->io_tbl;
448 struct iscsi_bd *bd;
449
450 io->bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
451 ISCSI_MAX_BDS_PER_CMD * sizeof(*bd),
452 &io->bd_tbl_dma, GFP_KERNEL);
453 if (!io->bd_tbl) {
454 iscsi_session_printk(KERN_ERR, session, "Could not "
455 "allocate bdt.\n");
456 return -ENOMEM;
457 }
458 io->bd_valid = 0;
459 return 0;
460}
461
462/**
463 * bnx2i_destroy_cmd_pool - destroys iscsi command pool and release BD table
464 * @hba: adapter instance pointer
465 * @session: iscsi session pointer
466 * @cmd: iscsi command structure
467 */
468static void bnx2i_destroy_cmd_pool(struct bnx2i_hba *hba,
469 struct iscsi_session *session)
470{
471 int i;
472
473 for (i = 0; i < session->cmds_max; i++) {
474 struct iscsi_task *task = session->cmds[i];
475 struct bnx2i_cmd *cmd = task->dd_data;
476
477 if (cmd->io_tbl.bd_tbl)
478 dma_free_coherent(&hba->pcidev->dev,
479 ISCSI_MAX_BDS_PER_CMD *
480 sizeof(struct iscsi_bd),
481 cmd->io_tbl.bd_tbl,
482 cmd->io_tbl.bd_tbl_dma);
483 }
484
485}
486
487
488/**
489 * bnx2i_setup_cmd_pool - sets up iscsi command pool for the session
490 * @hba: adapter instance pointer
491 * @session: iscsi session pointer
492 */
493static int bnx2i_setup_cmd_pool(struct bnx2i_hba *hba,
494 struct iscsi_session *session)
495{
496 int i;
497
498 for (i = 0; i < session->cmds_max; i++) {
499 struct iscsi_task *task = session->cmds[i];
500 struct bnx2i_cmd *cmd = task->dd_data;
501
cf4e6363
MC		 502 task->hdr = &cmd->hdr;
503 task->hdr_max = sizeof(struct iscsi_hdr);
504
505 if (bnx2i_alloc_bdt(hba, session, cmd))
506 goto free_bdts;
507 }
508
509 return 0;
510
511free_bdts:
512 bnx2i_destroy_cmd_pool(hba, session);
513 return -ENOMEM;
514}
515
516
517/**
518 * bnx2i_setup_mp_bdt - allocate BD table resources
519 * @hba: pointer to adapter structure
520 *
521 * Allocate memory for dummy buffer and associated BD
522 * table to be used by middle path (MP) requests
523 */
524static int bnx2i_setup_mp_bdt(struct bnx2i_hba *hba)
525{
526 int rc = 0;
527 struct iscsi_bd *mp_bdt;
528 u64 addr;
529
be1fefc2 530 hba->mp_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 531 &hba->mp_bd_dma, GFP_KERNEL);
532 if (!hba->mp_bd_tbl) {
533 printk(KERN_ERR "unable to allocate Middle Path BDT\n");
534 rc = -1;
535 goto out;
536 }
537
be1fefc2
MC		 538 hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
539 CNIC_PAGE_SIZE,
cf4e6363
MC		 540 &hba->dummy_buf_dma, GFP_KERNEL);
541 if (!hba->dummy_buffer) {
542 printk(KERN_ERR "unable to alloc Middle Path Dummy Buffer\n");
be1fefc2 543 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 544 hba->mp_bd_tbl, hba->mp_bd_dma);
545 hba->mp_bd_tbl = NULL;
546 rc = -1;
547 goto out;
548 }
549
550 mp_bdt = (struct iscsi_bd *) hba->mp_bd_tbl;
551 addr = (unsigned long) hba->dummy_buf_dma;
552 mp_bdt->buffer_addr_lo = addr & 0xffffffff;
553 mp_bdt->buffer_addr_hi = addr >> 32;
be1fefc2 554 mp_bdt->buffer_length = CNIC_PAGE_SIZE;
cf4e6363
MC		 555 mp_bdt->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
556 ISCSI_BD_FIRST_IN_BD_CHAIN;
557out:
558 return rc;
559}
560
561
562/**
563 * bnx2i_free_mp_bdt - releases ITT back to free pool
564 * @hba: pointer to adapter instance
565 *
566 * free MP dummy buffer and associated BD table
567 */
568static void bnx2i_free_mp_bdt(struct bnx2i_hba *hba)
569{
570 if (hba->mp_bd_tbl) {
be1fefc2 571 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 572 hba->mp_bd_tbl, hba->mp_bd_dma);
573 hba->mp_bd_tbl = NULL;
574 }
575 if (hba->dummy_buffer) {
be1fefc2 576 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 577 hba->dummy_buffer, hba->dummy_buf_dma);
578 hba->dummy_buffer = NULL;
579 }
580 return;
581}
582
583/**
584 * bnx2i_drop_session - notifies iscsid of connection error.
585 * @hba: adapter instance pointer
586 * @session: iscsi session pointer
587 *
588 * This notifies iscsid that there is a error, so it can initiate
589 * recovery.
590 *
591 * This relies on caller using the iscsi class iterator so the object
592 * is refcounted and does not disapper from under us.
593 */
594void bnx2i_drop_session(struct iscsi_cls_session *cls_session)
595{
596 iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
597}
598
599/**
600 * bnx2i_ep_destroy_list_add - add an entry to EP destroy list
601 * @hba: pointer to adapter instance
3f79410c 602 * @ep: pointer to endpoint (transport identifier) structure
cf4e6363
MC		 603 *
604 * EP destroy queue manager
605 */
606static int bnx2i_ep_destroy_list_add(struct bnx2i_hba *hba,
607 struct bnx2i_endpoint *ep)
608{
609 write_lock_bh(&hba->ep_rdwr_lock);
610 list_add_tail(&ep->link, &hba->ep_destroy_list);
611 write_unlock_bh(&hba->ep_rdwr_lock);
612 return 0;
613}
614
615/**
616 * bnx2i_ep_destroy_list_del - add an entry to EP destroy list
617 *
618 * @hba: pointer to adapter instance
3f79410c 619 * @ep: pointer to endpoint (transport identifier) structure
cf4e6363
MC		 620 *
621 * EP destroy queue manager
622 */
623static int bnx2i_ep_destroy_list_del(struct bnx2i_hba *hba,
624 struct bnx2i_endpoint *ep)
625{
626 write_lock_bh(&hba->ep_rdwr_lock);
627 list_del_init(&ep->link);
628 write_unlock_bh(&hba->ep_rdwr_lock);
629
630 return 0;
631}
632
633/**
634 * bnx2i_ep_ofld_list_add - add an entry to ep offload pending list
635 * @hba: pointer to adapter instance
3f79410c 636 * @ep: pointer to endpoint (transport identifier) structure
cf4e6363
MC		 637 *
638 * pending conn offload completion queue manager
639 */
640static int bnx2i_ep_ofld_list_add(struct bnx2i_hba *hba,
641 struct bnx2i_endpoint *ep)
642{
643 write_lock_bh(&hba->ep_rdwr_lock);
644 list_add_tail(&ep->link, &hba->ep_ofld_list);
645 write_unlock_bh(&hba->ep_rdwr_lock);
646 return 0;
647}
648
649/**
650 * bnx2i_ep_ofld_list_del - add an entry to ep offload pending list
651 * @hba: pointer to adapter instance
3f79410c 652 * @ep: pointer to endpoint (transport identifier) structure
cf4e6363
MC		 653 *
654 * pending conn offload completion queue manager
655 */
656static int bnx2i_ep_ofld_list_del(struct bnx2i_hba *hba,
657 struct bnx2i_endpoint *ep)
658{
659 write_lock_bh(&hba->ep_rdwr_lock);
660 list_del_init(&ep->link);
661 write_unlock_bh(&hba->ep_rdwr_lock);
662 return 0;
663}
664
665
666/**
667 * bnx2i_find_ep_in_ofld_list - find iscsi_cid in pending list of endpoints
668 *
669 * @hba: pointer to adapter instance
670 * @iscsi_cid: iscsi context ID to find
671 *
672 */
673struct bnx2i_endpoint *
674bnx2i_find_ep_in_ofld_list(struct bnx2i_hba *hba, u32 iscsi_cid)
675{
676 struct list_head *list;
677 struct list_head *tmp;
678 struct bnx2i_endpoint *ep;
679
680 read_lock_bh(&hba->ep_rdwr_lock);
681 list_for_each_safe(list, tmp, &hba->ep_ofld_list) {
682 ep = (struct bnx2i_endpoint *)list;
683
684 if (ep->ep_iscsi_cid == iscsi_cid)
685 break;
686 ep = NULL;
687 }
688 read_unlock_bh(&hba->ep_rdwr_lock);
689
690 if (!ep)
691 printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
692 return ep;
693}
694
cf4e6363
MC		 695/**
696 * bnx2i_find_ep_in_destroy_list - find iscsi_cid in destroy list
697 * @hba: pointer to adapter instance
698 * @iscsi_cid: iscsi context ID to find
699 *
700 */
701struct bnx2i_endpoint *
702bnx2i_find_ep_in_destroy_list(struct bnx2i_hba *hba, u32 iscsi_cid)
703{
704 struct list_head *list;
705 struct list_head *tmp;
706 struct bnx2i_endpoint *ep;
707
708 read_lock_bh(&hba->ep_rdwr_lock);
709 list_for_each_safe(list, tmp, &hba->ep_destroy_list) {
710 ep = (struct bnx2i_endpoint *)list;
711
712 if (ep->ep_iscsi_cid == iscsi_cid)
713 break;
714 ep = NULL;
715 }
716 read_unlock_bh(&hba->ep_rdwr_lock);
717
718 if (!ep)
719 printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
720
721 return ep;
722}
723
46012e8b
EW		 724/**
725 * bnx2i_ep_active_list_add - add an entry to ep active list
726 * @hba: pointer to adapter instance
3f79410c 727 * @ep: pointer to endpoint (transport identifier) structure
46012e8b
EW		 728 *
729 * current active conn queue manager
730 */
731static void bnx2i_ep_active_list_add(struct bnx2i_hba *hba,
732 struct bnx2i_endpoint *ep)
733{
734 write_lock_bh(&hba->ep_rdwr_lock);
735 list_add_tail(&ep->link, &hba->ep_active_list);
736 write_unlock_bh(&hba->ep_rdwr_lock);
737}
738
739
740/**
741 * bnx2i_ep_active_list_del - deletes an entry to ep active list
742 * @hba: pointer to adapter instance
3f79410c 743 * @ep: pointer to endpoint (transport identifier) structure
46012e8b
EW		 744 *
745 * current active conn queue manager
746 */
747static void bnx2i_ep_active_list_del(struct bnx2i_hba *hba,
748 struct bnx2i_endpoint *ep)
749{
750 write_lock_bh(&hba->ep_rdwr_lock);
751 list_del_init(&ep->link);
752 write_unlock_bh(&hba->ep_rdwr_lock);
753}
754
755
cf4e6363
MC		 756/**
757 * bnx2i_setup_host_queue_size - assigns shost->can_queue param
758 * @hba: pointer to adapter instance
759 * @shost: scsi host pointer
760 *
761 * Initializes 'can_queue' parameter based on how many outstanding commands
762 * the device can handle. Each device 5708/5709/57710 has different
763 * capabilities
764 */
765static void bnx2i_setup_host_queue_size(struct bnx2i_hba *hba,
766 struct Scsi_Host *shost)
767{
768 if (test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type))
769 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
770 else if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type))
771 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5709;
772 else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
773 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_57710;
774 else
775 shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
776}
777
778
779/**
780 * bnx2i_alloc_hba - allocate and init adapter instance
781 * @cnic: cnic device pointer
782 *
783 * allocate & initialize adapter structure and call other
784 * support routines to do per adapter initialization
785 */
786struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic)
787{
788 struct Scsi_Host *shost;
789 struct bnx2i_hba *hba;
790
791 shost = iscsi_host_alloc(&bnx2i_host_template, sizeof(*hba), 0);
792 if (!shost)
793 return NULL;
794 shost->dma_boundary = cnic->pcidev->dma_mask;
795 shost->transportt = bnx2i_scsi_xport_template;
796 shost->max_id = ISCSI_MAX_CONNS_PER_HBA;
797 shost->max_channel = 0;
798 shost->max_lun = 512;
799 shost->max_cmd_len = 16;
800
801 hba = iscsi_host_priv(shost);
802 hba->shost = shost;
803 hba->netdev = cnic->netdev;
804 /* Get PCI related information and update hba struct members */
805 hba->pcidev = cnic->pcidev;
806 pci_dev_get(hba->pcidev);
807 hba->pci_did = hba->pcidev->device;
808 hba->pci_vid = hba->pcidev->vendor;
809 hba->pci_sdid = hba->pcidev->subsystem_device;
810 hba->pci_svid = hba->pcidev->subsystem_vendor;
811 hba->pci_func = PCI_FUNC(hba->pcidev->devfn);
812 hba->pci_devno = PCI_SLOT(hba->pcidev->devfn);
cf4e6363 813
b83908ce 814 bnx2i_identify_device(hba, cnic);
cf4e6363
MC		 815 bnx2i_setup_host_queue_size(hba, shost);
816
a7717180 817 hba->reg_base = pci_resource_start(hba->pcidev, 0);
cf4e6363 818 if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
a7717180 819 hba->regview = pci_iomap(hba->pcidev, 0, BNX2_MQ_CONFIG2);
cf4e6363
MC		 820 if (!hba->regview)
821 goto ioreg_map_err;
822 } else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
a7717180 823 hba->regview = pci_iomap(hba->pcidev, 0, 4096);
cf4e6363
MC		 824 if (!hba->regview)
825 goto ioreg_map_err;
826 }
827
828 if (bnx2i_setup_mp_bdt(hba))
829 goto mp_bdt_mem_err;
830
831 INIT_LIST_HEAD(&hba->ep_ofld_list);
46012e8b 832 INIT_LIST_HEAD(&hba->ep_active_list);
cf4e6363
MC		 833 INIT_LIST_HEAD(&hba->ep_destroy_list);
834 rwlock_init(&hba->ep_rdwr_lock);
835
836 hba->mtu_supported = BNX2I_MAX_MTU_SUPPORTED;
837
838 /* different values for 5708/5709/57710 */
839 hba->max_active_conns = ISCSI_MAX_CONNS_PER_HBA;
840
841 if (bnx2i_setup_free_cid_que(hba))
842 goto cid_que_err;
843
844 /* SQ/RQ/CQ size can be changed via sysfx interface */
845 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
846 if (sq_size && sq_size <= BNX2I_5770X_SQ_WQES_MAX)
847 hba->max_sqes = sq_size;
848 else
849 hba->max_sqes = BNX2I_5770X_SQ_WQES_DEFAULT;
850 } else { /* 5706/5708/5709 */
851 if (sq_size && sq_size <= BNX2I_570X_SQ_WQES_MAX)
852 hba->max_sqes = sq_size;
853 else
854 hba->max_sqes = BNX2I_570X_SQ_WQES_DEFAULT;
855 }
856
857 hba->max_rqes = rq_size;
858 hba->max_cqes = hba->max_sqes + rq_size;
859 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
860 if (hba->max_cqes > BNX2I_5770X_CQ_WQES_MAX)
861 hba->max_cqes = BNX2I_5770X_CQ_WQES_MAX;
862 } else if (hba->max_cqes > BNX2I_570X_CQ_WQES_MAX)
863 hba->max_cqes = BNX2I_570X_CQ_WQES_MAX;
864
865 hba->num_ccell = hba->max_sqes / 2;
866
867 spin_lock_init(&hba->lock);
868 mutex_init(&hba->net_dev_lock);
490475a9 869 init_waitqueue_head(&hba->eh_wait);
e37d2c47 870 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
d5307a07 871 hba->hba_shutdown_tmo = 30 * HZ;
e37d2c47
EW		 872 hba->conn_teardown_tmo = 20 * HZ;
873 hba->conn_ctx_destroy_tmo = 6 * HZ;
874 } else { /* 5706/5708/5709 */
55e15c97 875 hba->hba_shutdown_tmo = 20 * HZ;
e37d2c47
EW		 876 hba->conn_teardown_tmo = 10 * HZ;
877 hba->conn_ctx_destroy_tmo = 2 * HZ;
878 }
cf4e6363 879
2e499d3c
BW		 880#ifdef CONFIG_32BIT
881 spin_lock_init(&hba->stat_lock);
882#endif
883 memset(&hba->stats, 0, sizeof(struct iscsi_stats_info));
884
cf4e6363
MC		 885 if (iscsi_host_add(shost, &hba->pcidev->dev))
886 goto free_dump_mem;
887 return hba;
888
889free_dump_mem:
890 bnx2i_release_free_cid_que(hba);
891cid_que_err:
892 bnx2i_free_mp_bdt(hba);
893mp_bdt_mem_err:
894 if (hba->regview) {
a7717180 895 pci_iounmap(hba->pcidev, hba->regview);
cf4e6363
MC		 896 hba->regview = NULL;
897 }
898ioreg_map_err:
899 pci_dev_put(hba->pcidev);
900 scsi_host_put(shost);
901 return NULL;
902}
903
904/**
905 * bnx2i_free_hba- releases hba structure and resources held by the adapter
906 * @hba: pointer to adapter instance
907 *
908 * free adapter structure and call various cleanup routines.
909 */
910void bnx2i_free_hba(struct bnx2i_hba *hba)
911{
912 struct Scsi_Host *shost = hba->shost;
913
914 iscsi_host_remove(shost);
915 INIT_LIST_HEAD(&hba->ep_ofld_list);
46012e8b 916 INIT_LIST_HEAD(&hba->ep_active_list);
cf4e6363
MC		 917 INIT_LIST_HEAD(&hba->ep_destroy_list);
918 pci_dev_put(hba->pcidev);
919
920 if (hba->regview) {
a7717180 921 pci_iounmap(hba->pcidev, hba->regview);
cf4e6363
MC		 922 hba->regview = NULL;
923 }
924 bnx2i_free_mp_bdt(hba);
925 bnx2i_release_free_cid_que(hba);
926 iscsi_host_free(shost);
927}
928
929/**
930 * bnx2i_conn_free_login_resources - free DMA resources used for login process
931 * @hba: pointer to adapter instance
932 * @bnx2i_conn: iscsi connection pointer
933 *
934 * Login related resources, mostly BDT & payload DMA memory is freed
935 */
936static void bnx2i_conn_free_login_resources(struct bnx2i_hba *hba,
937 struct bnx2i_conn *bnx2i_conn)
938{
939 if (bnx2i_conn->gen_pdu.resp_bd_tbl) {
be1fefc2 940 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 941 bnx2i_conn->gen_pdu.resp_bd_tbl,
942 bnx2i_conn->gen_pdu.resp_bd_dma);
943 bnx2i_conn->gen_pdu.resp_bd_tbl = NULL;
944 }
945
946 if (bnx2i_conn->gen_pdu.req_bd_tbl) {
be1fefc2 947 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 948 bnx2i_conn->gen_pdu.req_bd_tbl,
949 bnx2i_conn->gen_pdu.req_bd_dma);
950 bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
951 }
952
953 if (bnx2i_conn->gen_pdu.resp_buf) {
954 dma_free_coherent(&hba->pcidev->dev,
955 ISCSI_DEF_MAX_RECV_SEG_LEN,
956 bnx2i_conn->gen_pdu.resp_buf,
957 bnx2i_conn->gen_pdu.resp_dma_addr);
958 bnx2i_conn->gen_pdu.resp_buf = NULL;
959 }
960
961 if (bnx2i_conn->gen_pdu.req_buf) {
962 dma_free_coherent(&hba->pcidev->dev,
963 ISCSI_DEF_MAX_RECV_SEG_LEN,
964 bnx2i_conn->gen_pdu.req_buf,
965 bnx2i_conn->gen_pdu.req_dma_addr);
966 bnx2i_conn->gen_pdu.req_buf = NULL;
967 }
968}
969
970/**
971 * bnx2i_conn_alloc_login_resources - alloc DMA resources for login/nop.
972 * @hba: pointer to adapter instance
973 * @bnx2i_conn: iscsi connection pointer
974 *
975 * Mgmt task DNA resources are allocated in this routine.
976 */
977static int bnx2i_conn_alloc_login_resources(struct bnx2i_hba *hba,
978 struct bnx2i_conn *bnx2i_conn)
979{
980 /* Allocate memory for login request/response buffers */
981 bnx2i_conn->gen_pdu.req_buf =
982 dma_alloc_coherent(&hba->pcidev->dev,
983 ISCSI_DEF_MAX_RECV_SEG_LEN,
984 &bnx2i_conn->gen_pdu.req_dma_addr,
985 GFP_KERNEL);
986 if (bnx2i_conn->gen_pdu.req_buf == NULL)
987 goto login_req_buf_failure;
988
989 bnx2i_conn->gen_pdu.req_buf_size = 0;
990 bnx2i_conn->gen_pdu.req_wr_ptr = bnx2i_conn->gen_pdu.req_buf;
991
992 bnx2i_conn->gen_pdu.resp_buf =
993 dma_alloc_coherent(&hba->pcidev->dev,
994 ISCSI_DEF_MAX_RECV_SEG_LEN,
995 &bnx2i_conn->gen_pdu.resp_dma_addr,
996 GFP_KERNEL);
997 if (bnx2i_conn->gen_pdu.resp_buf == NULL)
998 goto login_resp_buf_failure;
999
1000 bnx2i_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN;
1001 bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf;
1002
1003 bnx2i_conn->gen_pdu.req_bd_tbl =
be1fefc2 1004 dma_alloc_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 1005 &bnx2i_conn->gen_pdu.req_bd_dma, GFP_KERNEL);
1006 if (bnx2i_conn->gen_pdu.req_bd_tbl == NULL)
1007 goto login_req_bd_tbl_failure;
1008
1009 bnx2i_conn->gen_pdu.resp_bd_tbl =
be1fefc2 1010 dma_alloc_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 1011 &bnx2i_conn->gen_pdu.resp_bd_dma,
1012 GFP_KERNEL);
1013 if (bnx2i_conn->gen_pdu.resp_bd_tbl == NULL)
1014 goto login_resp_bd_tbl_failure;
1015
1016 return 0;
1017
1018login_resp_bd_tbl_failure:
be1fefc2 1019 dma_free_coherent(&hba->pcidev->dev, CNIC_PAGE_SIZE,
cf4e6363
MC		 1020 bnx2i_conn->gen_pdu.req_bd_tbl,
1021 bnx2i_conn->gen_pdu.req_bd_dma);
1022 bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
1023
1024login_req_bd_tbl_failure:
1025 dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
1026 bnx2i_conn->gen_pdu.resp_buf,
1027 bnx2i_conn->gen_pdu.resp_dma_addr);
1028 bnx2i_conn->gen_pdu.resp_buf = NULL;
1029login_resp_buf_failure:
1030 dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
1031 bnx2i_conn->gen_pdu.req_buf,
1032 bnx2i_conn->gen_pdu.req_dma_addr);
1033 bnx2i_conn->gen_pdu.req_buf = NULL;
1034login_req_buf_failure:
1035 iscsi_conn_printk(KERN_ERR, bnx2i_conn->cls_conn->dd_data,
1036 "login resource alloc failed!!\n");
1037 return -ENOMEM;
1038
1039}
1040
1041
1042/**
1043 * bnx2i_iscsi_prep_generic_pdu_bd - prepares BD table.
1044 * @bnx2i_conn: iscsi connection pointer
1045 *
1046 * Allocates buffers and BD tables before shipping requests to cnic
1047 * for PDUs prepared by 'iscsid' daemon
1048 */
1049static void bnx2i_iscsi_prep_generic_pdu_bd(struct bnx2i_conn *bnx2i_conn)
1050{
1051 struct iscsi_bd *bd_tbl;
1052
1053 bd_tbl = (struct iscsi_bd *) bnx2i_conn->gen_pdu.req_bd_tbl;
1054
1055 bd_tbl->buffer_addr_hi =
1056 (u32) ((u64) bnx2i_conn->gen_pdu.req_dma_addr >> 32);
1057 bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.req_dma_addr;
1058 bd_tbl->buffer_length = bnx2i_conn->gen_pdu.req_wr_ptr -
1059 bnx2i_conn->gen_pdu.req_buf;
1060 bd_tbl->reserved0 = 0;
1061 bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
1062 ISCSI_BD_FIRST_IN_BD_CHAIN;
1063
1064 bd_tbl = (struct iscsi_bd *) bnx2i_conn->gen_pdu.resp_bd_tbl;
1065 bd_tbl->buffer_addr_hi = (u64) bnx2i_conn->gen_pdu.resp_dma_addr >> 32;
1066 bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_dma_addr;
1067 bd_tbl->buffer_length = ISCSI_DEF_MAX_RECV_SEG_LEN;
1068 bd_tbl->reserved0 = 0;
1069 bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
1070 ISCSI_BD_FIRST_IN_BD_CHAIN;
1071}
1072
1073
1074/**
1075 * bnx2i_iscsi_send_generic_request - called to send mgmt tasks.
1076 * @task: transport layer task pointer
1077 *
1078 * called to transmit PDUs prepared by the 'iscsid' daemon. iSCSI login,
1079 * Nop-out and Logout requests flow through this path.
1080 */
1081static int bnx2i_iscsi_send_generic_request(struct iscsi_task *task)
1082{
1083 struct bnx2i_cmd *cmd = task->dd_data;
1084 struct bnx2i_conn *bnx2i_conn = cmd->conn;
1085 int rc = 0;
1086 char *buf;
1087 int data_len;
1088
1089 bnx2i_iscsi_prep_generic_pdu_bd(bnx2i_conn);
1090 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
1091 case ISCSI_OP_LOGIN:
1092 bnx2i_send_iscsi_login(bnx2i_conn, task);
1093 break;
1094 case ISCSI_OP_NOOP_OUT:
1095 data_len = bnx2i_conn->gen_pdu.req_buf_size;
1096 buf = bnx2i_conn->gen_pdu.req_buf;
1097 if (data_len)
1098 rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
cf4e6363
MC		 1099 buf, data_len, 1);
1100 else
1101 rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
cf4e6363
MC		 1102 NULL, 0, 1);
1103 break;
1104 case ISCSI_OP_LOGOUT:
1105 rc = bnx2i_send_iscsi_logout(bnx2i_conn, task);
1106 break;
1107 case ISCSI_OP_SCSI_TMFUNC:
1108 rc = bnx2i_send_iscsi_tmf(bnx2i_conn, task);
1109 break;
09813ba5
EW		 1110 case ISCSI_OP_TEXT:
1111 rc = bnx2i_send_iscsi_text(bnx2i_conn, task);
1112 break;
cf4e6363
MC		 1113 default:
1114 iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
1115 "send_gen: unsupported op 0x%x\n",
1116 task->hdr->opcode);
1117 }
1118 return rc;
1119}
1120
1121
1122/**********************************************************************
1123 * SCSI-ML Interface
1124 **********************************************************************/
1125
1126/**
1127 * bnx2i_cpy_scsi_cdb - copies LUN & CDB fields in required format to sq wqe
1128 * @sc: SCSI-ML command pointer
1129 * @cmd: iscsi cmd pointer
1130 */
1131static void bnx2i_cpy_scsi_cdb(struct scsi_cmnd *sc, struct bnx2i_cmd *cmd)
1132{
1133 u32 dword;
1134 int lpcnt;
1135 u8 *srcp;
1136 u32 *dstp;
1137 u32 scsi_lun[2];
1138
1139 int_to_scsilun(sc->device->lun, (struct scsi_lun *) scsi_lun);
1140 cmd->req.lun[0] = be32_to_cpu(scsi_lun[0]);
1141 cmd->req.lun[1] = be32_to_cpu(scsi_lun[1]);
1142
1143 lpcnt = cmd->scsi_cmd->cmd_len / sizeof(dword);
1144 srcp = (u8 *) sc->cmnd;
1145 dstp = (u32 *) cmd->req.cdb;
1146 while (lpcnt--) {
1147 memcpy(&dword, (const void *) srcp, 4);
1148 *dstp = cpu_to_be32(dword);
1149 srcp += 4;
1150 dstp++;
1151 }
1152 if (sc->cmd_len & 0x3) {
1153 dword = (u32) srcp[0] | ((u32) srcp[1] << 8);
1154 *dstp = cpu_to_be32(dword);
1155 }
1156}
1157
1158static void bnx2i_cleanup_task(struct iscsi_task *task)
1159{
1160 struct iscsi_conn *conn = task->conn;
1161 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1162 struct bnx2i_hba *hba = bnx2i_conn->hba;
1163
1164 /*
1165 * mgmt task or cmd was never sent to us to transmit.
1166 */
1167 if (!task->sc || task->state == ISCSI_TASK_PENDING)
1168 return;
1169 /*
1170 * need to clean-up task context to claim dma buffers
1171 */
1172 if (task->state == ISCSI_TASK_ABRT_TMF) {
1173 bnx2i_send_cmd_cleanup_req(hba, task->dd_data);
1174
659743b0 1175 spin_unlock_bh(&conn->session->back_lock);
cf4e6363
MC		 1176 wait_for_completion_timeout(&bnx2i_conn->cmd_cleanup_cmpl,
1177 msecs_to_jiffies(ISCSI_CMD_CLEANUP_TIMEOUT));
659743b0 1178 spin_lock_bh(&conn->session->back_lock);
cf4e6363
MC		 1179 }
1180 bnx2i_iscsi_unmap_sg_list(task->dd_data);
1181}
1182
1183/**
1184 * bnx2i_mtask_xmit - transmit mtask to chip for further processing
1185 * @conn: transport layer conn structure pointer
1186 * @task: transport layer command structure pointer
1187 */
1188static int
1189bnx2i_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
1190{
1191 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
2e499d3c 1192 struct bnx2i_hba *hba = bnx2i_conn->hba;
cf4e6363
MC		 1193 struct bnx2i_cmd *cmd = task->dd_data;
1194
1195 memset(bnx2i_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
1196
1197 bnx2i_setup_cmd_wqe_template(cmd);
1198 bnx2i_conn->gen_pdu.req_buf_size = task->data_count;
2e499d3c
BW		 1199
1200 /* Tx PDU/data length count */
1201 ADD_STATS_64(hba, tx_pdus, 1);
1202 ADD_STATS_64(hba, tx_bytes, task->data_count);
1203
cf4e6363
MC		 1204 if (task->data_count) {
1205 memcpy(bnx2i_conn->gen_pdu.req_buf, task->data,
1206 task->data_count);
1207 bnx2i_conn->gen_pdu.req_wr_ptr =
1208 bnx2i_conn->gen_pdu.req_buf + task->data_count;
1209 }
1210 cmd->conn = conn->dd_data;
1211 cmd->scsi_cmd = NULL;
1212 return bnx2i_iscsi_send_generic_request(task);
1213}
1214
1215/**
1216 * bnx2i_task_xmit - transmit iscsi command to chip for further processing
1217 * @task: transport layer command structure pointer
1218 *
1219 * maps SG buffers and send request to chip/firmware in the form of SQ WQE
1220 */
1221static int bnx2i_task_xmit(struct iscsi_task *task)
1222{
1223 struct iscsi_conn *conn = task->conn;
1224 struct iscsi_session *session = conn->session;
1225 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
1226 struct bnx2i_hba *hba = iscsi_host_priv(shost);
1227 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1228 struct scsi_cmnd *sc = task->sc;
1229 struct bnx2i_cmd *cmd = task->dd_data;
12352183 1230 struct iscsi_scsi_req *hdr = (struct iscsi_scsi_req *)task->hdr;
cf4e6363 1231
b5cf6b63
EW		 1232 if (atomic_read(&bnx2i_conn->ep->num_active_cmds) + 1 >
1233 hba->max_sqes)
7287c63e
EW		 1234 return -ENOMEM;
1235
cf4e6363
MC		 1236 /*
1237 * If there is no scsi_cmnd this must be a mgmt task
1238 */
1239 if (!sc)
1240 return bnx2i_mtask_xmit(conn, task);
1241
1242 bnx2i_setup_cmd_wqe_template(cmd);
1243 cmd->req.op_code = ISCSI_OP_SCSI_CMD;
1244 cmd->conn = bnx2i_conn;
1245 cmd->scsi_cmd = sc;
1246 cmd->req.total_data_transfer_length = scsi_bufflen(sc);
1247 cmd->req.cmd_sn = be32_to_cpu(hdr->cmdsn);
1248
1249 bnx2i_iscsi_map_sg_list(cmd);
1250 bnx2i_cpy_scsi_cdb(sc, cmd);
1251
1252 cmd->req.op_attr = ISCSI_ATTR_SIMPLE;
1253 if (sc->sc_data_direction == DMA_TO_DEVICE) {
1254 cmd->req.op_attr |= ISCSI_CMD_REQUEST_WRITE;
1255 cmd->req.itt = task->itt |
1256 (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
1257 bnx2i_setup_write_cmd_bd_info(task);
1258 } else {
1259 if (scsi_bufflen(sc))
1260 cmd->req.op_attr |= ISCSI_CMD_REQUEST_READ;
1261 cmd->req.itt = task->itt |
1262 (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
1263 }
1264
1265 cmd->req.num_bds = cmd->io_tbl.bd_valid;
1266 if (!cmd->io_tbl.bd_valid) {
1267 cmd->req.bd_list_addr_lo = (u32) hba->mp_bd_dma;
1268 cmd->req.bd_list_addr_hi = (u32) ((u64) hba->mp_bd_dma >> 32);
1269 cmd->req.num_bds = 1;
1270 }
1271
1272 bnx2i_send_iscsi_scsicmd(bnx2i_conn, cmd);
1273 return 0;
1274}
1275
1276/**
1277 * bnx2i_session_create - create a new iscsi session
1278 * @cmds_max: max commands supported
1279 * @qdepth: scsi queue depth to support
1280 * @initial_cmdsn: initial iscsi CMDSN to be used for this session
1281 *
1282 * Creates a new iSCSI session instance on given device.
1283 */
1284static struct iscsi_cls_session *
1285bnx2i_session_create(struct iscsi_endpoint *ep,
1286 uint16_t cmds_max, uint16_t qdepth,
1287 uint32_t initial_cmdsn)
1288{
1289 struct Scsi_Host *shost;
1290 struct iscsi_cls_session *cls_session;
1291 struct bnx2i_hba *hba;
1292 struct bnx2i_endpoint *bnx2i_ep;
1293
1294 if (!ep) {
1295 printk(KERN_ERR "bnx2i: missing ep.\n");
1296 return NULL;
1297 }
1298
1299 bnx2i_ep = ep->dd_data;
1300 shost = bnx2i_ep->hba->shost;
1301 hba = iscsi_host_priv(shost);
1302 if (bnx2i_adapter_ready(hba))
1303 return NULL;
1304
1305 /*
1306 * user can override hw limit as long as it is within
1307 * the min/max.
1308 */
1309 if (cmds_max > hba->max_sqes)
1310 cmds_max = hba->max_sqes;
1311 else if (cmds_max < BNX2I_SQ_WQES_MIN)
1312 cmds_max = BNX2I_SQ_WQES_MIN;
1313
1314 cls_session = iscsi_session_setup(&bnx2i_iscsi_transport, shost,
b8b9e1b8 1315 cmds_max, 0, sizeof(struct bnx2i_cmd),
cf4e6363
MC		 1316 initial_cmdsn, ISCSI_MAX_TARGET);
1317 if (!cls_session)
1318 return NULL;
1319
1320 if (bnx2i_setup_cmd_pool(hba, cls_session->dd_data))
1321 goto session_teardown;
1322 return cls_session;
1323
1324session_teardown:
1325 iscsi_session_teardown(cls_session);
1326 return NULL;
1327}
1328
1329
1330/**
1331 * bnx2i_session_destroy - destroys iscsi session
1332 * @cls_session: pointer to iscsi cls session
1333 *
1334 * Destroys previously created iSCSI session instance and releases
1335 * all resources held by it
1336 */
1337static void bnx2i_session_destroy(struct iscsi_cls_session *cls_session)
1338{
1339 struct iscsi_session *session = cls_session->dd_data;
1340 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1341 struct bnx2i_hba *hba = iscsi_host_priv(shost);
1342
1343 bnx2i_destroy_cmd_pool(hba, session);
1344 iscsi_session_teardown(cls_session);
1345}
1346
1347
1348/**
1349 * bnx2i_conn_create - create iscsi connection instance
1350 * @cls_session: pointer to iscsi cls session
1351 * @cid: iscsi cid as per rfc (not NX2's CID terminology)
1352 *
1353 * Creates a new iSCSI connection instance for a given session
1354 */
1355static struct iscsi_cls_conn *
1356bnx2i_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
1357{
1358 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1359 struct bnx2i_hba *hba = iscsi_host_priv(shost);
1360 struct bnx2i_conn *bnx2i_conn;
1361 struct iscsi_cls_conn *cls_conn;
1362 struct iscsi_conn *conn;
1363
1364 cls_conn = iscsi_conn_setup(cls_session, sizeof(*bnx2i_conn),
1365 cid);
1366 if (!cls_conn)
1367 return NULL;
1368 conn = cls_conn->dd_data;
1369
1370 bnx2i_conn = conn->dd_data;
1371 bnx2i_conn->cls_conn = cls_conn;
1372 bnx2i_conn->hba = hba;
b5cf6b63
EW		 1373
1374 atomic_set(&bnx2i_conn->work_cnt, 0);
1375
cf4e6363
MC		 1376 /* 'ep' ptr will be assigned in bind() call */
1377 bnx2i_conn->ep = NULL;
1378 init_completion(&bnx2i_conn->cmd_cleanup_cmpl);
1379
1380 if (bnx2i_conn_alloc_login_resources(hba, bnx2i_conn)) {
1381 iscsi_conn_printk(KERN_ALERT, conn,
1382 "conn_new: login resc alloc failed!!\n");
1383 goto free_conn;
1384 }
1385
1386 return cls_conn;
1387
1388free_conn:
1389 iscsi_conn_teardown(cls_conn);
1390 return NULL;
1391}
1392
1393/**
1394 * bnx2i_conn_bind - binds iscsi sess, conn and ep objects together
1395 * @cls_session: pointer to iscsi cls session
1396 * @cls_conn: pointer to iscsi cls conn
1397 * @transport_fd: 64-bit EP handle
1398 * @is_leading: leading connection on this session?
1399 *
1400 * Binds together iSCSI session instance, iSCSI connection instance
1401 * and the TCP connection. This routine returns error code if
1402 * TCP connection does not belong on the device iSCSI sess/conn
1403 * is bound
1404 */
1405static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session,
1406 struct iscsi_cls_conn *cls_conn,
1407 uint64_t transport_fd, int is_leading)
1408{
1409 struct iscsi_conn *conn = cls_conn->dd_data;
1410 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1411 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
1412 struct bnx2i_hba *hba = iscsi_host_priv(shost);
1413 struct bnx2i_endpoint *bnx2i_ep;
1414 struct iscsi_endpoint *ep;
1415 int ret_code;
1416
1417 ep = iscsi_lookup_endpoint(transport_fd);
1418 if (!ep)
1419 return -EINVAL;
842158d7
EW		 1420 /*
1421 * Forcefully terminate all in progress connection recovery at the
1422 * earliest, either in bind(), send_pdu(LOGIN), or conn_start()
1423 */
1424 if (bnx2i_adapter_ready(hba))
1425 return -EIO;
cf4e6363
MC		 1426
1427 bnx2i_ep = ep->dd_data;
1428 if ((bnx2i_ep->state == EP_STATE_TCP_FIN_RCVD) ||
1429 (bnx2i_ep->state == EP_STATE_TCP_RST_RCVD))
1430 /* Peer disconnect via' FIN or RST */
1431 return -EINVAL;
1432
1433 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1434 return -EINVAL;
1435
1436 if (bnx2i_ep->hba != hba) {
1437 /* Error - TCP connection does not belong to this device
1438 */
1439 iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
1440 "conn bind, ep=0x%p (%s) does not",
1441 bnx2i_ep, bnx2i_ep->hba->netdev->name);
1442 iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
1443 "belong to hba (%s)\n",
1444 hba->netdev->name);
1445 return -EEXIST;
1446 }
cf4e6363
MC		 1447 bnx2i_ep->conn = bnx2i_conn;
1448 bnx2i_conn->ep = bnx2i_ep;
1449 bnx2i_conn->iscsi_conn_cid = bnx2i_ep->ep_iscsi_cid;
1450 bnx2i_conn->fw_cid = bnx2i_ep->ep_cid;
cf4e6363
MC		 1451
1452 ret_code = bnx2i_bind_conn_to_iscsi_cid(hba, bnx2i_conn,
1453 bnx2i_ep->ep_iscsi_cid);
1454
1455 /* 5706/5708/5709 FW takes RQ as full when initiated, but for 57710
1456 * driver needs to explicitly replenish RQ index during setup.
1457 */
1458 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
1459 bnx2i_put_rq_buf(bnx2i_conn, 0);
1460
1461 bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE);
1462 return ret_code;
1463}
1464
1465
1466/**
1467 * bnx2i_conn_destroy - destroy iscsi connection instance & release resources
1468 * @cls_conn: pointer to iscsi cls conn
1469 *
1470 * Destroy an iSCSI connection instance and release memory resources held by
1471 * this connection
1472 */
1473static void bnx2i_conn_destroy(struct iscsi_cls_conn *cls_conn)
1474{
1475 struct iscsi_conn *conn = cls_conn->dd_data;
1476 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1477 struct Scsi_Host *shost;
1478 struct bnx2i_hba *hba;
b5cf6b63
EW		 1479 struct bnx2i_work *work, *tmp;
1480 unsigned cpu = 0;
1481 struct bnx2i_percpu_s *p;
cf4e6363
MC		 1482
1483 shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
1484 hba = iscsi_host_priv(shost);
1485
1486 bnx2i_conn_free_login_resources(hba, bnx2i_conn);
b5cf6b63
EW		 1487
1488 if (atomic_read(&bnx2i_conn->work_cnt)) {
1489 for_each_online_cpu(cpu) {
1490 p = &per_cpu(bnx2i_percpu, cpu);
1491 spin_lock_bh(&p->p_work_lock);
1492 list_for_each_entry_safe(work, tmp,
1493 &p->work_list, list) {
1494 if (work->session == conn->session &&
1495 work->bnx2i_conn == bnx2i_conn) {
1496 list_del_init(&work->list);
1497 kfree(work);
1498 if (!atomic_dec_and_test(
1499 &bnx2i_conn->work_cnt))
1500 break;
1501 }
1502 }
1503 spin_unlock_bh(&p->p_work_lock);
1504 }
1505 }
1506
cf4e6363
MC		 1507 iscsi_conn_teardown(cls_conn);
1508}
1509
1510
1511/**
d8585bcd
MC		 1512 * bnx2i_ep_get_param - return iscsi ep parameter to caller
1513 * @ep: pointer to iscsi endpoint
cf4e6363
MC		 1514 * @param: parameter type identifier
1515 * @buf: buffer pointer
1516 *
d8585bcd 1517 * returns iSCSI ep parameters
cf4e6363 1518 */
d8585bcd
MC		 1519static int bnx2i_ep_get_param(struct iscsi_endpoint *ep,
1520 enum iscsi_param param, char *buf)
cf4e6363 1521{
d8585bcd
MC		 1522 struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
1523 struct bnx2i_hba *hba = bnx2i_ep->hba;
1524 int len = -ENOTCONN;
cf4e6363 1525
d8585bcd
MC		 1526 if (!hba)
1527 return -ENOTCONN;
7a2962c7 1528
cf4e6363
MC		 1529 switch (param) {
1530 case ISCSI_PARAM_CONN_PORT:
d8585bcd
MC		 1531 mutex_lock(&hba->net_dev_lock);
1532 if (bnx2i_ep->cm_sk)
1533 len = sprintf(buf, "%hu\n", bnx2i_ep->cm_sk->dst_port);
1534 mutex_unlock(&hba->net_dev_lock);
cf4e6363
MC		 1535 break;
1536 case ISCSI_PARAM_CONN_ADDRESS:
d8585bcd
MC		 1537 mutex_lock(&hba->net_dev_lock);
1538 if (bnx2i_ep->cm_sk)
1539 len = sprintf(buf, "%pI4\n", &bnx2i_ep->cm_sk->dst_ip);
1540 mutex_unlock(&hba->net_dev_lock);
cf4e6363
MC		 1541 break;
1542 default:
d8585bcd 1543 return -ENOSYS;
cf4e6363 1544 }
d8585bcd 1545
cf4e6363
MC		 1546 return len;
1547}
1548
1549/**
1550 * bnx2i_host_get_param - returns host (adapter) related parameters
1551 * @shost: scsi host pointer
1552 * @param: parameter type identifier
1553 * @buf: buffer pointer
1554 */
1555static int bnx2i_host_get_param(struct Scsi_Host *shost,
1556 enum iscsi_host_param param, char *buf)
1557{
1558 struct bnx2i_hba *hba = iscsi_host_priv(shost);
1559 int len = 0;
1560
1561 switch (param) {
1562 case ISCSI_HOST_PARAM_HWADDRESS:
1563 len = sysfs_format_mac(buf, hba->cnic->mac_addr, 6);
1564 break;
1565 case ISCSI_HOST_PARAM_NETDEV_NAME:
1566 len = sprintf(buf, "%s\n", hba->netdev->name);
1567 break;
625986c2
MC		 1568 case ISCSI_HOST_PARAM_IPADDRESS: {
1569 struct list_head *active_list = &hba->ep_active_list;
1570
1571 read_lock_bh(&hba->ep_rdwr_lock);
1572 if (!list_empty(&hba->ep_active_list)) {
1573 struct bnx2i_endpoint *bnx2i_ep;
1574 struct cnic_sock *csk;
1575
1576 bnx2i_ep = list_first_entry(active_list,
1577 struct bnx2i_endpoint,
1578 link);
1579 csk = bnx2i_ep->cm_sk;
1580 if (test_bit(SK_F_IPV6, &csk->flags))
1581 len = sprintf(buf, "%pI6\n", csk->src_ip);
1582 else
1583 len = sprintf(buf, "%pI4\n", csk->src_ip);
1584 }
1585 read_unlock_bh(&hba->ep_rdwr_lock);
1586 break;
1587 }
cf4e6363
MC		 1588 default:
1589 return iscsi_host_get_param(shost, param, buf);
1590 }
1591 return len;
1592}
1593
1594/**
1595 * bnx2i_conn_start - completes iscsi connection migration to FFP
1596 * @cls_conn: pointer to iscsi cls conn
1597 *
1598 * last call in FFP migration to handover iscsi conn to the driver
1599 */
1600static int bnx2i_conn_start(struct iscsi_cls_conn *cls_conn)
1601{
1602 struct iscsi_conn *conn = cls_conn->dd_data;
1603 struct bnx2i_conn *bnx2i_conn = conn->dd_data;
1604
1605 bnx2i_conn->ep->state = EP_STATE_ULP_UPDATE_START;
1606 bnx2i_update_iscsi_conn(conn);
1607
1608 /*
1609 * this should normally not sleep for a long time so it should
1610 * not disrupt the caller.
1611 */
1612 bnx2i_conn->ep->ofld_timer.expires = 1 * HZ + jiffies;
1613 bnx2i_conn->ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1614 bnx2i_conn->ep->ofld_timer.data = (unsigned long) bnx2i_conn->ep;
1615 add_timer(&bnx2i_conn->ep->ofld_timer);
1616 /* update iSCSI context for this conn, wait for CNIC to complete */
1617 wait_event_interruptible(bnx2i_conn->ep->ofld_wait,
1618 bnx2i_conn->ep->state != EP_STATE_ULP_UPDATE_START);
1619
1620 if (signal_pending(current))
1621 flush_signals(current);
1622 del_timer_sync(&bnx2i_conn->ep->ofld_timer);
1623
1624 iscsi_conn_start(cls_conn);
1625 return 0;
1626}
1627
1628
1629/**
1630 * bnx2i_conn_get_stats - returns iSCSI stats
1631 * @cls_conn: pointer to iscsi cls conn
1632 * @stats: pointer to iscsi statistic struct
1633 */
1634static void bnx2i_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1635 struct iscsi_stats *stats)
1636{
1637 struct iscsi_conn *conn = cls_conn->dd_data;
1638
1639 stats->txdata_octets = conn->txdata_octets;
1640 stats->rxdata_octets = conn->rxdata_octets;
1641 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
1642 stats->dataout_pdus = conn->dataout_pdus_cnt;
1643 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
1644 stats->datain_pdus = conn->datain_pdus_cnt;
1645 stats->r2t_pdus = conn->r2t_pdus_cnt;
1646 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
1647 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
cf4e6363
MC		 1648 stats->digest_err = 0;
1649 stats->timeout_err = 0;
915aafd8
MC		 1650 strcpy(stats->custom[0].desc, "eh_abort_cnt");
1651 stats->custom[0].value = conn->eh_abort_cnt;
1652 stats->custom_length = 1;
cf4e6363
MC		 1653}
1654
1655
1656/**
1657 * bnx2i_check_route - checks if target IP route belongs to one of NX2 devices
1658 * @dst_addr: target IP address
1659 *
1660 * check if route resolves to BNX2 device
1661 */
1662static struct bnx2i_hba *bnx2i_check_route(struct sockaddr *dst_addr)
1663{
1664 struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
1665 struct bnx2i_hba *hba;
1666 struct cnic_dev *cnic = NULL;
1667
cf4e6363
MC		 1668 hba = get_adapter_list_head();
1669 if (hba && hba->cnic)
1670 cnic = hba->cnic->cm_select_dev(desti, CNIC_ULP_ISCSI);
1671 if (!cnic) {
1672 printk(KERN_ALERT "bnx2i: no route,"
1673 "can't connect using cnic\n");
1674 goto no_nx2_route;
1675 }
1676 hba = bnx2i_find_hba_for_cnic(cnic);
1677 if (!hba)
1678 goto no_nx2_route;
1679
1680 if (bnx2i_adapter_ready(hba)) {
1681 printk(KERN_ALERT "bnx2i: check route, hba not found\n");
1682 goto no_nx2_route;
1683 }
1684 if (hba->netdev->mtu > hba->mtu_supported) {
1685 printk(KERN_ALERT "bnx2i: %s network i/f mtu is set to %d\n",
1686 hba->netdev->name, hba->netdev->mtu);
1687 printk(KERN_ALERT "bnx2i: iSCSI HBA can support mtu of %d\n",
1688 hba->mtu_supported);
1689 goto no_nx2_route;
1690 }
1691 return hba;
1692no_nx2_route:
1693 return NULL;
1694}
1695
1696
1697/**
1698 * bnx2i_tear_down_conn - tear down iscsi/tcp connection and free resources
1699 * @hba: pointer to adapter instance
3f79410c 1700 * @ep: endpoint (transport identifier) structure
cf4e6363
MC		 1701 *
1702 * destroys cm_sock structure and on chip iscsi context
1703 */
1704static int bnx2i_tear_down_conn(struct bnx2i_hba *hba,
1705 struct bnx2i_endpoint *ep)
1706{
5bf3f39f 1707 if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic) && ep->cm_sk)
cf4e6363
MC		 1708 hba->cnic->cm_destroy(ep->cm_sk);
1709
cf4e6363
MC		 1710 if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type) &&
1711 ep->state == EP_STATE_DISCONN_TIMEDOUT) {
5bf3f39f
EW		 1712 if (ep->conn && ep->conn->cls_conn &&
1713 ep->conn->cls_conn->dd_data) {
1714 struct iscsi_conn *conn = ep->conn->cls_conn->dd_data;
1715
1716 /* Must suspend all rx queue activity for this ep */
1717 set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
1718 }
1719 /* CONN_DISCONNECT timeout may or may not be an issue depending
1720 * on what transcribed in TCP layer, different targets behave
1721 * differently
1722 */
1723 printk(KERN_ALERT "bnx2i (%s): - WARN - CONN_DISCON timed out, "
1724 "please submit GRC Dump, NW/PCIe trace, "
1725 "driver msgs to developers for analysis\n",
1726 hba->netdev->name);
cf4e6363
MC		 1727 }
1728
1729 ep->state = EP_STATE_CLEANUP_START;
1730 init_timer(&ep->ofld_timer);
e37d2c47 1731 ep->ofld_timer.expires = hba->conn_ctx_destroy_tmo + jiffies;
cf4e6363
MC		 1732 ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1733 ep->ofld_timer.data = (unsigned long) ep;
1734 add_timer(&ep->ofld_timer);
1735
1736 bnx2i_ep_destroy_list_add(hba, ep);
1737
1738 /* destroy iSCSI context, wait for it to complete */
bee34877
EW		 1739 if (bnx2i_send_conn_destroy(hba, ep))
1740 ep->state = EP_STATE_CLEANUP_CMPL;
1741
cf4e6363
MC		 1742 wait_event_interruptible(ep->ofld_wait,
1743 (ep->state != EP_STATE_CLEANUP_START));
1744
1745 if (signal_pending(current))
1746 flush_signals(current);
1747 del_timer_sync(&ep->ofld_timer);
1748
1749 bnx2i_ep_destroy_list_del(hba, ep);
1750
1751 if (ep->state != EP_STATE_CLEANUP_CMPL)
1752 /* should never happen */
1753 printk(KERN_ALERT "bnx2i - conn destroy failed\n");
1754
1755 return 0;
1756}
1757
1758
1759/**
1760 * bnx2i_ep_connect - establish TCP connection to target portal
1761 * @shost: scsi host
1762 * @dst_addr: target IP address
1763 * @non_blocking: blocking or non-blocking call
1764 *
1765 * this routine initiates the TCP/IP connection by invoking Option-2 i/f
1766 * with l5_core and the CNIC. This is a multi-step process of resolving
1767 * route to target, create a iscsi connection context, handshaking with
1768 * CNIC module to create/initialize the socket struct and finally
1769 * sending down option-2 request to complete TCP 3-way handshake
1770 */
1771static struct iscsi_endpoint *bnx2i_ep_connect(struct Scsi_Host *shost,
1772 struct sockaddr *dst_addr,
1773 int non_blocking)
1774{
1775 u32 iscsi_cid = BNX2I_CID_RESERVED;
1776 struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
1777 struct sockaddr_in6 *desti6;
1778 struct bnx2i_endpoint *bnx2i_ep;
1779 struct bnx2i_hba *hba;
1780 struct cnic_dev *cnic;
1781 struct cnic_sockaddr saddr;
1782 struct iscsi_endpoint *ep;
1783 int rc = 0;
1784
fac3cc45 1785 if (shost) {
cf4e6363
MC		 1786 /* driver is given scsi host to work with */
1787 hba = iscsi_host_priv(shost);
fac3cc45 1788 } else
cf4e6363
MC		 1789 /*
1790 * check if the given destination can be reached through
1791 * a iscsi capable NetXtreme2 device
1792 */
1793 hba = bnx2i_check_route(dst_addr);
fac3cc45 1794
a91031a6 1795 if (!hba) {
490475a9 1796 rc = -EINVAL;
55e15c97 1797 goto nohba;
cf4e6363 1798 }
a91031a6 1799 mutex_lock(&hba->net_dev_lock);
cf4e6363 1800
a91031a6
EW		 1801 if (bnx2i_adapter_ready(hba) || !hba->cid_que.cid_free_cnt) {
1802 rc = -EPERM;
1803 goto check_busy;
1804 }
cf4e6363
MC		 1805 cnic = hba->cnic;
1806 ep = bnx2i_alloc_ep(hba);
1807 if (!ep) {
1808 rc = -ENOMEM;
1809 goto check_busy;
1810 }
1811 bnx2i_ep = ep->dd_data;
1812
b5cf6b63 1813 atomic_set(&bnx2i_ep->num_active_cmds, 0);
cf4e6363
MC		 1814 iscsi_cid = bnx2i_alloc_iscsi_cid(hba);
1815 if (iscsi_cid == -1) {
a91031a6
EW		 1816 printk(KERN_ALERT "bnx2i (%s): alloc_ep - unable to allocate "
1817 "iscsi cid\n", hba->netdev->name);
cf4e6363 1818 rc = -ENOMEM;
a91031a6
EW		 1819 bnx2i_free_ep(ep);
1820 goto check_busy;
cf4e6363
MC		 1821 }
1822 bnx2i_ep->hba_age = hba->age;
1823
1824 rc = bnx2i_alloc_qp_resc(hba, bnx2i_ep);
1825 if (rc != 0) {
a91031a6
EW		 1826 printk(KERN_ALERT "bnx2i (%s): ep_conn - alloc QP resc error"
1827 "\n", hba->netdev->name);
cf4e6363
MC		 1828 rc = -ENOMEM;
1829 goto qp_resc_err;
1830 }
1831
1832 bnx2i_ep->ep_iscsi_cid = (u16)iscsi_cid;
1833 bnx2i_ep->state = EP_STATE_OFLD_START;
1834 bnx2i_ep_ofld_list_add(hba, bnx2i_ep);
1835
1836 init_timer(&bnx2i_ep->ofld_timer);
1837 bnx2i_ep->ofld_timer.expires = 2 * HZ + jiffies;
1838 bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
1839 bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
1840 add_timer(&bnx2i_ep->ofld_timer);
1841
bee34877
EW		 1842 if (bnx2i_send_conn_ofld_req(hba, bnx2i_ep)) {
1843 if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
1844 printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
1845 hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
1846 rc = -EBUSY;
1847 } else
1848 rc = -ENOSPC;
1849 printk(KERN_ALERT "bnx2i (%s): unable to send conn offld kwqe"
1850 "\n", hba->netdev->name);
1851 bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
1852 goto conn_failed;
1853 }
cf4e6363
MC		 1854
1855 /* Wait for CNIC hardware to setup conn context and return 'cid' */
1856 wait_event_interruptible(bnx2i_ep->ofld_wait,
1857 bnx2i_ep->state != EP_STATE_OFLD_START);
1858
1859 if (signal_pending(current))
1860 flush_signals(current);
1861 del_timer_sync(&bnx2i_ep->ofld_timer);
1862
1863 bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
1864
1865 if (bnx2i_ep->state != EP_STATE_OFLD_COMPL) {
a91031a6
EW		 1866 if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
1867 printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
1868 hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
1869 rc = -EBUSY;
1870 } else
1871 rc = -ENOSPC;
cf4e6363
MC		 1872 goto conn_failed;
1873 }
1874
1875 rc = cnic->cm_create(cnic, CNIC_ULP_ISCSI, bnx2i_ep->ep_cid,
1876 iscsi_cid, &bnx2i_ep->cm_sk, bnx2i_ep);
1877 if (rc) {
1878 rc = -EINVAL;
a91031a6
EW		 1879 /* Need to terminate and cleanup the connection */
1880 goto release_ep;
cf4e6363
MC		 1881 }
1882
1883 bnx2i_ep->cm_sk->rcv_buf = 256 * 1024;
1884 bnx2i_ep->cm_sk->snd_buf = 256 * 1024;
1885 clear_bit(SK_TCP_TIMESTAMP, &bnx2i_ep->cm_sk->tcp_flags);
1886
1887 memset(&saddr, 0, sizeof(saddr));
1888 if (dst_addr->sa_family == AF_INET) {
1889 desti = (struct sockaddr_in *) dst_addr;
1890 saddr.remote.v4 = *desti;
1891 saddr.local.v4.sin_family = desti->sin_family;
1892 } else if (dst_addr->sa_family == AF_INET6) {
1893 desti6 = (struct sockaddr_in6 *) dst_addr;
1894 saddr.remote.v6 = *desti6;
1895 saddr.local.v6.sin6_family = desti6->sin6_family;
1896 }
1897
1898 bnx2i_ep->timestamp = jiffies;
1899 bnx2i_ep->state = EP_STATE_CONNECT_START;
1900 if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
1901 rc = -EINVAL;
1902 goto conn_failed;
1903 } else
1904 rc = cnic->cm_connect(bnx2i_ep->cm_sk, &saddr);
cf4e6363
MC		 1905 if (rc)
1906 goto release_ep;
1907
46012e8b
EW		 1908 bnx2i_ep_active_list_add(hba, bnx2i_ep);
1909
cf4e6363 1910 if (bnx2i_map_ep_dbell_regs(bnx2i_ep))
46012e8b
EW		 1911 goto del_active_ep;
1912
cf4e6363
MC		 1913 mutex_unlock(&hba->net_dev_lock);
1914 return ep;
1915
46012e8b
EW		 1916del_active_ep:
1917 bnx2i_ep_active_list_del(hba, bnx2i_ep);
cf4e6363
MC		 1918release_ep:
1919 if (bnx2i_tear_down_conn(hba, bnx2i_ep)) {
1920 mutex_unlock(&hba->net_dev_lock);
1921 return ERR_PTR(rc);
1922 }
1923conn_failed:
cf4e6363
MC		 1924 bnx2i_free_qp_resc(hba, bnx2i_ep);
1925qp_resc_err:
1926 bnx2i_free_ep(ep);
cf4e6363 1927check_busy:
55e15c97
EW		 1928 mutex_unlock(&hba->net_dev_lock);
1929nohba:
cf4e6363
MC		 1930 return ERR_PTR(rc);
1931}
1932
1933
1934/**
1935 * bnx2i_ep_poll - polls for TCP connection establishement
1936 * @ep: TCP connection (endpoint) handle
1937 * @timeout_ms: timeout value in milli secs
1938 *
1939 * polls for TCP connect request to complete
1940 */
1941static int bnx2i_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1942{
1943 struct bnx2i_endpoint *bnx2i_ep;
1944 int rc = 0;
1945
1946 bnx2i_ep = ep->dd_data;
1947 if ((bnx2i_ep->state == EP_STATE_IDLE) ||
1948 (bnx2i_ep->state == EP_STATE_CONNECT_FAILED) ||
1949 (bnx2i_ep->state == EP_STATE_OFLD_FAILED))
1950 return -1;
1951 if (bnx2i_ep->state == EP_STATE_CONNECT_COMPL)
1952 return 1;
1953
1954 rc = wait_event_interruptible_timeout(bnx2i_ep->ofld_wait,
1955 ((bnx2i_ep->state ==
1956 EP_STATE_OFLD_FAILED) ||
1957 (bnx2i_ep->state ==
1958 EP_STATE_CONNECT_FAILED) ||
1959 (bnx2i_ep->state ==
1960 EP_STATE_CONNECT_COMPL)),
1961 msecs_to_jiffies(timeout_ms));
490475a9 1962 if (bnx2i_ep->state == EP_STATE_OFLD_FAILED)
cf4e6363
MC		 1963 rc = -1;
1964
1965 if (rc > 0)
1966 return 1;
1967 else if (!rc)
1968 return 0; /* timeout */
1969 else
1970 return rc;
1971}
1972
1973
1974/**
1975 * bnx2i_ep_tcp_conn_active - check EP state transition
1976 * @ep: endpoint pointer
1977 *
1978 * check if underlying TCP connection is active
1979 */
1980static int bnx2i_ep_tcp_conn_active(struct bnx2i_endpoint *bnx2i_ep)
1981{
1982 int ret;
1983 int cnic_dev_10g = 0;
1984
1985 if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
1986 cnic_dev_10g = 1;
1987
1988 switch (bnx2i_ep->state) {
cf4e6363
MC		 1989 case EP_STATE_CLEANUP_FAILED:
1990 case EP_STATE_OFLD_FAILED:
1991 case EP_STATE_DISCONN_TIMEDOUT:
1992 ret = 0;
1993 break;
252e4480 1994 case EP_STATE_CONNECT_START:
ec8933b4 1995 case EP_STATE_CONNECT_FAILED:
cf4e6363
MC		 1996 case EP_STATE_CONNECT_COMPL:
1997 case EP_STATE_ULP_UPDATE_START:
1998 case EP_STATE_ULP_UPDATE_COMPL:
1999 case EP_STATE_TCP_FIN_RCVD:
2eefb20d
EW		 2000 case EP_STATE_LOGOUT_SENT:
2001 case EP_STATE_LOGOUT_RESP_RCVD:
cf4e6363
MC		 2002 case EP_STATE_ULP_UPDATE_FAILED:
2003 ret = 1;
2004 break;
2005 case EP_STATE_TCP_RST_RCVD:
cf4e6363 2006 if (cnic_dev_10g)
cf4e6363 2007 ret = 0;
94810e82
EW		 2008 else
2009 ret = 1;
cf4e6363
MC		 2010 break;
2011 default:
2012 ret = 0;
2013 }
2014
2015 return ret;
2016}
2017
2018
6447f286
EW		 2019/*
2020 * bnx2i_hw_ep_disconnect - executes TCP connection teardown process in the hw
2021 * @ep: TCP connection (bnx2i endpoint) handle
cf4e6363
MC		 2022 *
2023 * executes TCP connection teardown process
2024 */
6447f286 2025int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep)
cf4e6363 2026{
6447f286 2027 struct bnx2i_hba *hba = bnx2i_ep->hba;
cf4e6363 2028 struct cnic_dev *cnic;
6447f286
EW		 2029 struct iscsi_session *session = NULL;
2030 struct iscsi_conn *conn = NULL;
2031 int ret = 0;
2eefb20d
EW		 2032 int close = 0;
2033 int close_ret = 0;
cf4e6363 2034
6447f286
EW		 2035 if (!hba)
2036 return 0;
cf4e6363 2037
6447f286
EW		 2038 cnic = hba->cnic;
2039 if (!cnic)
2040 return 0;
2041
a91031a6
EW		 2042 if (bnx2i_ep->state == EP_STATE_IDLE ||
2043 bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
250ae982
EW		 2044 return 0;
2045
6447f286
EW		 2046 if (!bnx2i_ep_tcp_conn_active(bnx2i_ep))
2047 goto destroy_conn;
cf4e6363
MC		 2048
2049 if (bnx2i_ep->conn) {
6447f286 2050 conn = bnx2i_ep->conn->cls_conn->dd_data;
cf4e6363 2051 session = conn->session;
cf4e6363
MC		 2052 }
2053
cf4e6363 2054 init_timer(&bnx2i_ep->ofld_timer);
e37d2c47 2055 bnx2i_ep->ofld_timer.expires = hba->conn_teardown_tmo + jiffies;
cf4e6363
MC		 2056 bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
2057 bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
2058 add_timer(&bnx2i_ep->ofld_timer);
2059
2eefb20d 2060 if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic))
6447f286 2061 goto out;
cf4e6363 2062
2eefb20d 2063 if (session) {
659743b0 2064 spin_lock_bh(&session->frwd_lock);
2eefb20d
EW		 2065 if (bnx2i_ep->state != EP_STATE_TCP_FIN_RCVD) {
2066 if (session->state == ISCSI_STATE_LOGGING_OUT) {
2067 if (bnx2i_ep->state == EP_STATE_LOGOUT_SENT) {
2068 /* Logout sent, but no resp */
a91031a6
EW		 2069 printk(KERN_ALERT "bnx2i (%s): WARNING"
2070 " logout response was not "
2071 "received!\n",
2072 bnx2i_ep->hba->netdev->name);
2eefb20d
EW		 2073 } else if (bnx2i_ep->state ==
2074 EP_STATE_LOGOUT_RESP_RCVD)
2075 close = 1;
2076 }
2077 } else
2078 close = 1;
2079
659743b0 2080 spin_unlock_bh(&session->frwd_lock);
2eefb20d
EW		 2081 }
2082
2083 bnx2i_ep->state = EP_STATE_DISCONN_START;
2084
2085 if (close)
2086 close_ret = cnic->cm_close(bnx2i_ep->cm_sk);
2087 else
2088 close_ret = cnic->cm_abort(bnx2i_ep->cm_sk);
2089
2090 if (close_ret)
a91031a6 2091 printk(KERN_ALERT "bnx2i (%s): close/abort(%d) returned %d\n",
2c2255e0
EW		 2092 bnx2i_ep->hba->netdev->name, close, close_ret);
2093 else
2094 /* wait for option-2 conn teardown */
2095 wait_event_interruptible(bnx2i_ep->ofld_wait,
cf4e6363
MC		 2096 bnx2i_ep->state != EP_STATE_DISCONN_START);
2097
2098 if (signal_pending(current))
2099 flush_signals(current);
2100 del_timer_sync(&bnx2i_ep->ofld_timer);
2101
6447f286 2102destroy_conn:
46012e8b 2103 bnx2i_ep_active_list_del(hba, bnx2i_ep);
6447f286 2104 if (bnx2i_tear_down_conn(hba, bnx2i_ep))
a91031a6 2105 return -EINVAL;
6447f286
EW		 2106out:
2107 bnx2i_ep->state = EP_STATE_IDLE;
2108 return ret;
2109}
2110
2111
2112/**
2113 * bnx2i_ep_disconnect - executes TCP connection teardown process
2114 * @ep: TCP connection (iscsi endpoint) handle
2115 *
2116 * executes TCP connection teardown process
2117 */
2118static void bnx2i_ep_disconnect(struct iscsi_endpoint *ep)
2119{
2120 struct bnx2i_endpoint *bnx2i_ep;
2121 struct bnx2i_conn *bnx2i_conn = NULL;
2122 struct iscsi_conn *conn = NULL;
2123 struct bnx2i_hba *hba;
2124
2125 bnx2i_ep = ep->dd_data;
2126
2127 /* driver should not attempt connection cleanup until TCP_CONNECT
2128 * completes either successfully or fails. Timeout is 9-secs, so
2129 * wait for it to complete
2130 */
2131 while ((bnx2i_ep->state == EP_STATE_CONNECT_START) &&
2132 !time_after(jiffies, bnx2i_ep->timestamp + (12 * HZ)))
2133 msleep(250);
2134
2135 if (bnx2i_ep->conn) {
2136 bnx2i_conn = bnx2i_ep->conn;
2137 conn = bnx2i_conn->cls_conn->dd_data;
2138 iscsi_suspend_queue(conn);
2139 }
2140 hba = bnx2i_ep->hba;
2141
2142 mutex_lock(&hba->net_dev_lock);
2143
a91031a6
EW		 2144 if (bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
2145 goto out;
6447f286 2146
a91031a6 2147 if (bnx2i_ep->state == EP_STATE_IDLE)
6447f286
EW		 2148 goto free_resc;
2149
a91031a6
EW		 2150 if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
2151 (bnx2i_ep->hba_age != hba->age)) {
2152 bnx2i_ep_active_list_del(hba, bnx2i_ep);
6447f286 2153 goto free_resc;
a91031a6 2154 }
6447f286
EW		 2155
2156 /* Do all chip cleanup here */
2157 if (bnx2i_hw_ep_disconnect(bnx2i_ep)) {
cf4e6363
MC		 2158 mutex_unlock(&hba->net_dev_lock);
2159 return;
2160 }
2161free_resc:
cf4e6363 2162 bnx2i_free_qp_resc(hba, bnx2i_ep);
a91031a6 2163
cf4e6363
MC		 2164 if (bnx2i_conn)
2165 bnx2i_conn->ep = NULL;
2166
2167 bnx2i_free_ep(ep);
a91031a6 2168out:
6447f286 2169 mutex_unlock(&hba->net_dev_lock);
490475a9
AV		 2170
2171 wake_up_interruptible(&hba->eh_wait);
cf4e6363
MC		 2172}
2173
2174
2175/**
2176 * bnx2i_nl_set_path - ISCSI_UEVENT_PATH_UPDATE user message handler
2177 * @buf: pointer to buffer containing iscsi path message
2178 *
2179 */
2180static int bnx2i_nl_set_path(struct Scsi_Host *shost, struct iscsi_path *params)
2181{
2182 struct bnx2i_hba *hba = iscsi_host_priv(shost);
2183 char *buf = (char *) params;
2184 u16 len = sizeof(*params);
2185
2186 /* handled by cnic driver */
2187 hba->cnic->iscsi_nl_msg_recv(hba->cnic, ISCSI_UEVENT_PATH_UPDATE, buf,
2188 len);
2189
2190 return 0;
2191}
2192
587a1f16 2193static umode_t bnx2i_attr_is_visible(int param_type, int param)
3128c6c7
MC		 2194{
2195 switch (param_type) {
f27fb2ef
MC		 2196 case ISCSI_HOST_PARAM:
2197 switch (param) {
2198 case ISCSI_HOST_PARAM_NETDEV_NAME:
2199 case ISCSI_HOST_PARAM_HWADDRESS:
2200 case ISCSI_HOST_PARAM_IPADDRESS:
2201 return S_IRUGO;
2202 default:
2203 return 0;
2204 }
3128c6c7
MC		 2205 case ISCSI_PARAM:
2206 switch (param) {
2207 case ISCSI_PARAM_MAX_RECV_DLENGTH:
2208 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
2209 case ISCSI_PARAM_HDRDGST_EN:
2210 case ISCSI_PARAM_DATADGST_EN:
2211 case ISCSI_PARAM_CONN_ADDRESS:
2212 case ISCSI_PARAM_CONN_PORT:
2213 case ISCSI_PARAM_EXP_STATSN:
2214 case ISCSI_PARAM_PERSISTENT_ADDRESS:
2215 case ISCSI_PARAM_PERSISTENT_PORT:
2216 case ISCSI_PARAM_PING_TMO:
2217 case ISCSI_PARAM_RECV_TMO:
1d063c17
MC		 2218 case ISCSI_PARAM_INITIAL_R2T_EN:
2219 case ISCSI_PARAM_MAX_R2T:
2220 case ISCSI_PARAM_IMM_DATA_EN:
2221 case ISCSI_PARAM_FIRST_BURST:
2222 case ISCSI_PARAM_MAX_BURST:
2223 case ISCSI_PARAM_PDU_INORDER_EN:
2224 case ISCSI_PARAM_DATASEQ_INORDER_EN:
2225 case ISCSI_PARAM_ERL:
2226 case ISCSI_PARAM_TARGET_NAME:
2227 case ISCSI_PARAM_TPGT:
2228 case ISCSI_PARAM_USERNAME:
2229 case ISCSI_PARAM_PASSWORD:
2230 case ISCSI_PARAM_USERNAME_IN:
2231 case ISCSI_PARAM_PASSWORD_IN:
2232 case ISCSI_PARAM_FAST_ABORT:
2233 case ISCSI_PARAM_ABORT_TMO:
2234 case ISCSI_PARAM_LU_RESET_TMO:
2235 case ISCSI_PARAM_TGT_RESET_TMO:
2236 case ISCSI_PARAM_IFACE_NAME:
2237 case ISCSI_PARAM_INITIATOR_NAME:
3128c6c7
MC		 2238 return S_IRUGO;
2239 default:
2240 return 0;
2241 }
2242 }
2243
2244 return 0;
2245}
cf4e6363
MC		 2246
2247/*
2248 * 'Scsi_Host_Template' structure and 'iscsi_tranport' structure template
2249 * used while registering with the scsi host and iSCSI transport module.
2250 */
2251static struct scsi_host_template bnx2i_host_template = {
2252 .module = THIS_MODULE,
f39a7757 2253 .name = "QLogic Offload iSCSI Initiator",
cf4e6363
MC		 2254 .proc_name = "bnx2i",
2255 .queuecommand = iscsi_queuecommand,
2256 .eh_abort_handler = iscsi_eh_abort,
2257 .eh_device_reset_handler = iscsi_eh_device_reset,
309ce156 2258 .eh_target_reset_handler = iscsi_eh_recover_target,
9f9127fd 2259 .change_queue_depth = iscsi_change_queue_depth,
6f9c04ff 2260 .target_alloc = iscsi_target_alloc,
b5cf6b63 2261 .can_queue = 2048,
cf4e6363 2262 .max_sectors = 127,
b5cf6b63 2263 .cmd_per_lun = 128,
cf4e6363
MC		 2264 .this_id = -1,
2265 .use_clustering = ENABLE_CLUSTERING,
2266 .sg_tablesize = ISCSI_MAX_BDS_PER_CMD,
2267 .shost_attrs = bnx2i_dev_attributes,
2268};
2269
2270struct iscsi_transport bnx2i_iscsi_transport = {
2271 .owner = THIS_MODULE,
2272 .name = "bnx2i",
2273 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST |
2274 CAP_MULTI_R2T | CAP_DATADGST |
09813ba5
EW		 2275 CAP_DATA_PATH_OFFLOAD |
2276 CAP_TEXT_NEGO,
cf4e6363
MC		 2277 .create_session = bnx2i_session_create,
2278 .destroy_session = bnx2i_session_destroy,
2279 .create_conn = bnx2i_conn_create,
2280 .bind_conn = bnx2i_conn_bind,
2281 .destroy_conn = bnx2i_conn_destroy,
3128c6c7 2282 .attr_is_visible = bnx2i_attr_is_visible,
cf4e6363 2283 .set_param = iscsi_set_param,
d8585bcd 2284 .get_conn_param = iscsi_conn_get_param,
cf4e6363
MC		 2285 .get_session_param = iscsi_session_get_param,
2286 .get_host_param = bnx2i_host_get_param,
2287 .start_conn = bnx2i_conn_start,
2288 .stop_conn = iscsi_conn_stop,
2289 .send_pdu = iscsi_conn_send_pdu,
2290 .xmit_task = bnx2i_task_xmit,
2291 .get_stats = bnx2i_conn_get_stats,
2292 /* TCP connect - disconnect - option-2 interface calls */
d8585bcd 2293 .get_ep_param = bnx2i_ep_get_param,
cf4e6363
MC		 2294 .ep_connect = bnx2i_ep_connect,
2295 .ep_poll = bnx2i_ep_poll,
2296 .ep_disconnect = bnx2i_ep_disconnect,
2297 .set_path = bnx2i_nl_set_path,
2298 /* Error recovery timeout call */
2299 .session_recovery_timedout = iscsi_session_recovery_timedout,
2300 .cleanup_task = bnx2i_cleanup_task,
2301};
Linux kernel - Deliverables
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