2 * bnx2i_iscsi.c: Broadcom NetXtreme II iSCSI driver.
4 * Copyright (c) 2006 - 2009 Broadcom Corporation
5 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
6 * Copyright (c) 2007, 2008 Mike Christie
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.
12 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
15 #include <scsi/scsi_tcq.h>
16 #include <scsi/libiscsi.h>
19 struct scsi_transport_template
*bnx2i_scsi_xport_template
;
20 struct iscsi_transport bnx2i_iscsi_transport
;
21 static struct scsi_host_template bnx2i_host_template
;
24 * Global endpoint resource info
26 static DEFINE_SPINLOCK(bnx2i_resc_lock
); /* protects global resources */
29 static int bnx2i_adapter_ready(struct bnx2i_hba
*hba
)
33 if (!hba
|| !test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
) ||
34 test_bit(ADAPTER_STATE_GOING_DOWN
, &hba
->adapter_state
) ||
35 test_bit(ADAPTER_STATE_LINK_DOWN
, &hba
->adapter_state
))
41 * bnx2i_get_write_cmd_bd_idx - identifies various BD bookmarks
42 * @cmd: iscsi cmd struct pointer
43 * @buf_off: absolute buffer offset
44 * @start_bd_off: u32 pointer to return the offset within the BD
45 * indicated by 'start_bd_idx' on which 'buf_off' falls
46 * @start_bd_idx: index of the BD on which 'buf_off' falls
48 * identifies & marks various bd info for scsi command's imm data,
49 * unsolicited data and the first solicited data seq.
51 static void bnx2i_get_write_cmd_bd_idx(struct bnx2i_cmd
*cmd
, u32 buf_off
,
52 u32
*start_bd_off
, u32
*start_bd_idx
)
54 struct iscsi_bd
*bd_tbl
= cmd
->io_tbl
.bd_tbl
;
59 while (buf_off
>= (cur_offset
+ bd_tbl
->buffer_length
)) {
60 cur_offset
+= bd_tbl
->buffer_length
;
66 *start_bd_off
= buf_off
- cur_offset
;
67 *start_bd_idx
= cur_bd_idx
;
71 * bnx2i_setup_write_cmd_bd_info - sets up BD various information
72 * @task: transport layer's cmd struct pointer
74 * identifies & marks various bd info for scsi command's immediate data,
75 * unsolicited data and first solicited data seq which includes BD start
76 * index & BD buf off. his function takes into account iscsi parameter such
77 * as immediate data and unsolicited data is support on this connection.
79 static void bnx2i_setup_write_cmd_bd_info(struct iscsi_task
*task
)
81 struct bnx2i_cmd
*cmd
= task
->dd_data
;
84 u32 buffer_offset
= 0;
85 u32 cmd_len
= cmd
->req
.total_data_transfer_length
;
87 /* if ImmediateData is turned off & IntialR2T is turned on,
88 * there will be no immediate or unsolicited data, just return.
90 if (!iscsi_task_has_unsol_data(task
) && !task
->imm_count
)
94 buffer_offset
+= task
->imm_count
;
95 if (task
->imm_count
== cmd_len
)
98 if (iscsi_task_has_unsol_data(task
)) {
99 bnx2i_get_write_cmd_bd_idx(cmd
, buffer_offset
,
100 &start_bd_offset
, &start_bd_idx
);
101 cmd
->req
.ud_buffer_offset
= start_bd_offset
;
102 cmd
->req
.ud_start_bd_index
= start_bd_idx
;
103 buffer_offset
+= task
->unsol_r2t
.data_length
;
106 if (buffer_offset
!= cmd_len
) {
107 bnx2i_get_write_cmd_bd_idx(cmd
, buffer_offset
,
108 &start_bd_offset
, &start_bd_idx
);
109 if ((start_bd_offset
> task
->conn
->session
->first_burst
) ||
110 (start_bd_idx
> scsi_sg_count(cmd
->scsi_cmd
))) {
113 iscsi_conn_printk(KERN_ALERT
, task
->conn
,
114 "bnx2i- error, buf offset 0x%x "
115 "bd_valid %d use_sg %d\n",
116 buffer_offset
, cmd
->io_tbl
.bd_valid
,
117 scsi_sg_count(cmd
->scsi_cmd
));
118 for (i
= 0; i
< cmd
->io_tbl
.bd_valid
; i
++)
119 iscsi_conn_printk(KERN_ALERT
, task
->conn
,
120 "bnx2i err, bd[%d]: len %x\n",
121 i
, cmd
->io_tbl
.bd_tbl
[i
].\
124 cmd
->req
.sd_buffer_offset
= start_bd_offset
;
125 cmd
->req
.sd_start_bd_index
= start_bd_idx
;
132 * bnx2i_map_scsi_sg - maps IO buffer and prepares the BD table
133 * @hba: adapter instance
134 * @cmd: iscsi cmd struct pointer
138 static int bnx2i_map_scsi_sg(struct bnx2i_hba
*hba
, struct bnx2i_cmd
*cmd
)
140 struct scsi_cmnd
*sc
= cmd
->scsi_cmd
;
141 struct iscsi_bd
*bd
= cmd
->io_tbl
.bd_tbl
;
142 struct scatterlist
*sg
;
150 BUG_ON(scsi_sg_count(sc
) > ISCSI_MAX_BDS_PER_CMD
);
152 sg_count
= scsi_dma_map(sc
);
154 scsi_for_each_sg(sc
, sg
, sg_count
, i
) {
155 sg_len
= sg_dma_len(sg
);
156 addr
= (u64
) sg_dma_address(sg
);
157 bd
[bd_count
].buffer_addr_lo
= addr
& 0xffffffff;
158 bd
[bd_count
].buffer_addr_hi
= addr
>> 32;
159 bd
[bd_count
].buffer_length
= sg_len
;
160 bd
[bd_count
].flags
= 0;
162 bd
[bd_count
].flags
= ISCSI_BD_FIRST_IN_BD_CHAIN
;
164 byte_count
+= sg_len
;
169 bd
[bd_count
- 1].flags
|= ISCSI_BD_LAST_IN_BD_CHAIN
;
171 BUG_ON(byte_count
!= scsi_bufflen(sc
));
176 * bnx2i_iscsi_map_sg_list - maps SG list
177 * @cmd: iscsi cmd struct pointer
179 * creates BD list table for the command
181 static void bnx2i_iscsi_map_sg_list(struct bnx2i_cmd
*cmd
)
185 bd_count
= bnx2i_map_scsi_sg(cmd
->conn
->hba
, cmd
);
187 struct iscsi_bd
*bd
= cmd
->io_tbl
.bd_tbl
;
189 bd
[0].buffer_addr_lo
= bd
[0].buffer_addr_hi
= 0;
190 bd
[0].buffer_length
= bd
[0].flags
= 0;
192 cmd
->io_tbl
.bd_valid
= bd_count
;
197 * bnx2i_iscsi_unmap_sg_list - unmaps SG list
198 * @cmd: iscsi cmd struct pointer
200 * unmap IO buffers and invalidate the BD table
202 void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd
*cmd
)
204 struct scsi_cmnd
*sc
= cmd
->scsi_cmd
;
206 if (cmd
->io_tbl
.bd_valid
&& sc
) {
208 cmd
->io_tbl
.bd_valid
= 0;
212 static void bnx2i_setup_cmd_wqe_template(struct bnx2i_cmd
*cmd
)
214 memset(&cmd
->req
, 0x00, sizeof(cmd
->req
));
215 cmd
->req
.op_code
= 0xFF;
216 cmd
->req
.bd_list_addr_lo
= (u32
) cmd
->io_tbl
.bd_tbl_dma
;
217 cmd
->req
.bd_list_addr_hi
=
218 (u32
) ((u64
) cmd
->io_tbl
.bd_tbl_dma
>> 32);
224 * bnx2i_bind_conn_to_iscsi_cid - bind conn structure to 'iscsi_cid'
225 * @hba: pointer to adapter instance
226 * @conn: pointer to iscsi connection
227 * @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
229 * update iscsi cid table entry with connection pointer. This enables
230 * driver to quickly get hold of connection structure pointer in
231 * completion/interrupt thread using iscsi context ID
233 static int bnx2i_bind_conn_to_iscsi_cid(struct bnx2i_hba
*hba
,
234 struct bnx2i_conn
*bnx2i_conn
,
237 if (hba
&& hba
->cid_que
.conn_cid_tbl
[iscsi_cid
]) {
238 iscsi_conn_printk(KERN_ALERT
, bnx2i_conn
->cls_conn
->dd_data
,
239 "conn bind - entry #%d not free\n", iscsi_cid
);
243 hba
->cid_que
.conn_cid_tbl
[iscsi_cid
] = bnx2i_conn
;
249 * bnx2i_get_conn_from_id - maps an iscsi cid to corresponding conn ptr
250 * @hba: pointer to adapter instance
251 * @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
253 struct bnx2i_conn
*bnx2i_get_conn_from_id(struct bnx2i_hba
*hba
,
256 if (!hba
->cid_que
.conn_cid_tbl
) {
257 printk(KERN_ERR
"bnx2i: ERROR - missing conn<->cid table\n");
260 } else if (iscsi_cid
>= hba
->max_active_conns
) {
261 printk(KERN_ERR
"bnx2i: wrong cid #%d\n", iscsi_cid
);
264 return hba
->cid_que
.conn_cid_tbl
[iscsi_cid
];
269 * bnx2i_alloc_iscsi_cid - allocates a iscsi_cid from free pool
270 * @hba: pointer to adapter instance
272 static u32
bnx2i_alloc_iscsi_cid(struct bnx2i_hba
*hba
)
276 if (!hba
->cid_que
.cid_free_cnt
)
279 idx
= hba
->cid_que
.cid_q_cons_idx
;
280 hba
->cid_que
.cid_q_cons_idx
++;
281 if (hba
->cid_que
.cid_q_cons_idx
== hba
->cid_que
.cid_q_max_idx
)
282 hba
->cid_que
.cid_q_cons_idx
= 0;
284 hba
->cid_que
.cid_free_cnt
--;
285 return hba
->cid_que
.cid_que
[idx
];
290 * bnx2i_free_iscsi_cid - returns tcp port to free list
291 * @hba: pointer to adapter instance
292 * @iscsi_cid: iscsi context ID to free
294 static void bnx2i_free_iscsi_cid(struct bnx2i_hba
*hba
, u16 iscsi_cid
)
298 if (iscsi_cid
== (u16
) -1)
301 hba
->cid_que
.cid_free_cnt
++;
303 idx
= hba
->cid_que
.cid_q_prod_idx
;
304 hba
->cid_que
.cid_que
[idx
] = iscsi_cid
;
305 hba
->cid_que
.conn_cid_tbl
[iscsi_cid
] = NULL
;
306 hba
->cid_que
.cid_q_prod_idx
++;
307 if (hba
->cid_que
.cid_q_prod_idx
== hba
->cid_que
.cid_q_max_idx
)
308 hba
->cid_que
.cid_q_prod_idx
= 0;
313 * bnx2i_setup_free_cid_que - sets up free iscsi cid queue
314 * @hba: pointer to adapter instance
316 * allocates memory for iscsi cid queue & 'cid - conn ptr' mapping table,
317 * and initialize table attributes
319 static int bnx2i_setup_free_cid_que(struct bnx2i_hba
*hba
)
324 mem_size
= hba
->max_active_conns
* sizeof(u32
);
325 mem_size
= (mem_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
327 hba
->cid_que
.cid_que_base
= kmalloc(mem_size
, GFP_KERNEL
);
328 if (!hba
->cid_que
.cid_que_base
)
331 mem_size
= hba
->max_active_conns
* sizeof(struct bnx2i_conn
*);
332 mem_size
= (mem_size
+ (PAGE_SIZE
- 1)) & PAGE_MASK
;
333 hba
->cid_que
.conn_cid_tbl
= kmalloc(mem_size
, GFP_KERNEL
);
334 if (!hba
->cid_que
.conn_cid_tbl
) {
335 kfree(hba
->cid_que
.cid_que_base
);
336 hba
->cid_que
.cid_que_base
= NULL
;
340 hba
->cid_que
.cid_que
= (u32
*)hba
->cid_que
.cid_que_base
;
341 hba
->cid_que
.cid_q_prod_idx
= 0;
342 hba
->cid_que
.cid_q_cons_idx
= 0;
343 hba
->cid_que
.cid_q_max_idx
= hba
->max_active_conns
;
344 hba
->cid_que
.cid_free_cnt
= hba
->max_active_conns
;
346 for (i
= 0; i
< hba
->max_active_conns
; i
++) {
347 hba
->cid_que
.cid_que
[i
] = i
;
348 hba
->cid_que
.conn_cid_tbl
[i
] = NULL
;
355 * bnx2i_release_free_cid_que - releases 'iscsi_cid' queue resources
356 * @hba: pointer to adapter instance
358 static void bnx2i_release_free_cid_que(struct bnx2i_hba
*hba
)
360 kfree(hba
->cid_que
.cid_que_base
);
361 hba
->cid_que
.cid_que_base
= NULL
;
363 kfree(hba
->cid_que
.conn_cid_tbl
);
364 hba
->cid_que
.conn_cid_tbl
= NULL
;
369 * bnx2i_alloc_ep - allocates ep structure from global pool
370 * @hba: pointer to adapter instance
372 * routine allocates a free endpoint structure from global pool and
373 * a tcp port to be used for this connection. Global resource lock,
374 * 'bnx2i_resc_lock' is held while accessing shared global data structures
376 static struct iscsi_endpoint
*bnx2i_alloc_ep(struct bnx2i_hba
*hba
)
378 struct iscsi_endpoint
*ep
;
379 struct bnx2i_endpoint
*bnx2i_ep
;
381 ep
= iscsi_create_endpoint(sizeof(*bnx2i_ep
));
383 printk(KERN_ERR
"bnx2i: Could not allocate ep\n");
387 bnx2i_ep
= ep
->dd_data
;
388 INIT_LIST_HEAD(&bnx2i_ep
->link
);
389 bnx2i_ep
->state
= EP_STATE_IDLE
;
390 bnx2i_ep
->ep_iscsi_cid
= (u16
) -1;
392 bnx2i_ep
->hba_age
= hba
->age
;
393 hba
->ofld_conns_active
++;
394 init_waitqueue_head(&bnx2i_ep
->ofld_wait
);
400 * bnx2i_free_ep - free endpoint
401 * @ep: pointer to iscsi endpoint structure
403 static void bnx2i_free_ep(struct iscsi_endpoint
*ep
)
405 struct bnx2i_endpoint
*bnx2i_ep
= ep
->dd_data
;
408 spin_lock_irqsave(&bnx2i_resc_lock
, flags
);
409 bnx2i_ep
->state
= EP_STATE_IDLE
;
410 bnx2i_ep
->hba
->ofld_conns_active
--;
412 bnx2i_free_iscsi_cid(bnx2i_ep
->hba
, bnx2i_ep
->ep_iscsi_cid
);
413 if (bnx2i_ep
->conn
) {
414 bnx2i_ep
->conn
->ep
= NULL
;
415 bnx2i_ep
->conn
= NULL
;
418 bnx2i_ep
->hba
= NULL
;
419 spin_unlock_irqrestore(&bnx2i_resc_lock
, flags
);
420 iscsi_destroy_endpoint(ep
);
425 * bnx2i_alloc_bdt - allocates buffer descriptor (BD) table for the command
426 * @hba: adapter instance pointer
427 * @session: iscsi session pointer
428 * @cmd: iscsi command structure
430 static int bnx2i_alloc_bdt(struct bnx2i_hba
*hba
, struct iscsi_session
*session
,
431 struct bnx2i_cmd
*cmd
)
433 struct io_bdt
*io
= &cmd
->io_tbl
;
436 io
->bd_tbl
= dma_alloc_coherent(&hba
->pcidev
->dev
,
437 ISCSI_MAX_BDS_PER_CMD
* sizeof(*bd
),
438 &io
->bd_tbl_dma
, GFP_KERNEL
);
440 iscsi_session_printk(KERN_ERR
, session
, "Could not "
449 * bnx2i_destroy_cmd_pool - destroys iscsi command pool and release BD table
450 * @hba: adapter instance pointer
451 * @session: iscsi session pointer
452 * @cmd: iscsi command structure
454 static void bnx2i_destroy_cmd_pool(struct bnx2i_hba
*hba
,
455 struct iscsi_session
*session
)
459 for (i
= 0; i
< session
->cmds_max
; i
++) {
460 struct iscsi_task
*task
= session
->cmds
[i
];
461 struct bnx2i_cmd
*cmd
= task
->dd_data
;
463 if (cmd
->io_tbl
.bd_tbl
)
464 dma_free_coherent(&hba
->pcidev
->dev
,
465 ISCSI_MAX_BDS_PER_CMD
*
466 sizeof(struct iscsi_bd
),
468 cmd
->io_tbl
.bd_tbl_dma
);
475 * bnx2i_setup_cmd_pool - sets up iscsi command pool for the session
476 * @hba: adapter instance pointer
477 * @session: iscsi session pointer
479 static int bnx2i_setup_cmd_pool(struct bnx2i_hba
*hba
,
480 struct iscsi_session
*session
)
484 for (i
= 0; i
< session
->cmds_max
; i
++) {
485 struct iscsi_task
*task
= session
->cmds
[i
];
486 struct bnx2i_cmd
*cmd
= task
->dd_data
;
489 task
->hdr
= &cmd
->hdr
;
490 task
->hdr_max
= sizeof(struct iscsi_hdr
);
492 if (bnx2i_alloc_bdt(hba
, session
, cmd
))
499 bnx2i_destroy_cmd_pool(hba
, session
);
505 * bnx2i_setup_mp_bdt - allocate BD table resources
506 * @hba: pointer to adapter structure
508 * Allocate memory for dummy buffer and associated BD
509 * table to be used by middle path (MP) requests
511 static int bnx2i_setup_mp_bdt(struct bnx2i_hba
*hba
)
514 struct iscsi_bd
*mp_bdt
;
517 hba
->mp_bd_tbl
= dma_alloc_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
518 &hba
->mp_bd_dma
, GFP_KERNEL
);
519 if (!hba
->mp_bd_tbl
) {
520 printk(KERN_ERR
"unable to allocate Middle Path BDT\n");
525 hba
->dummy_buffer
= dma_alloc_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
526 &hba
->dummy_buf_dma
, GFP_KERNEL
);
527 if (!hba
->dummy_buffer
) {
528 printk(KERN_ERR
"unable to alloc Middle Path Dummy Buffer\n");
529 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
530 hba
->mp_bd_tbl
, hba
->mp_bd_dma
);
531 hba
->mp_bd_tbl
= NULL
;
536 mp_bdt
= (struct iscsi_bd
*) hba
->mp_bd_tbl
;
537 addr
= (unsigned long) hba
->dummy_buf_dma
;
538 mp_bdt
->buffer_addr_lo
= addr
& 0xffffffff;
539 mp_bdt
->buffer_addr_hi
= addr
>> 32;
540 mp_bdt
->buffer_length
= PAGE_SIZE
;
541 mp_bdt
->flags
= ISCSI_BD_LAST_IN_BD_CHAIN
|
542 ISCSI_BD_FIRST_IN_BD_CHAIN
;
549 * bnx2i_free_mp_bdt - releases ITT back to free pool
550 * @hba: pointer to adapter instance
552 * free MP dummy buffer and associated BD table
554 static void bnx2i_free_mp_bdt(struct bnx2i_hba
*hba
)
556 if (hba
->mp_bd_tbl
) {
557 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
558 hba
->mp_bd_tbl
, hba
->mp_bd_dma
);
559 hba
->mp_bd_tbl
= NULL
;
561 if (hba
->dummy_buffer
) {
562 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
563 hba
->dummy_buffer
, hba
->dummy_buf_dma
);
564 hba
->dummy_buffer
= NULL
;
570 * bnx2i_drop_session - notifies iscsid of connection error.
571 * @hba: adapter instance pointer
572 * @session: iscsi session pointer
574 * This notifies iscsid that there is a error, so it can initiate
577 * This relies on caller using the iscsi class iterator so the object
578 * is refcounted and does not disapper from under us.
580 void bnx2i_drop_session(struct iscsi_cls_session
*cls_session
)
582 iscsi_session_failure(cls_session
->dd_data
, ISCSI_ERR_CONN_FAILED
);
586 * bnx2i_ep_destroy_list_add - add an entry to EP destroy list
587 * @hba: pointer to adapter instance
588 * @ep: pointer to endpoint (transport indentifier) structure
590 * EP destroy queue manager
592 static int bnx2i_ep_destroy_list_add(struct bnx2i_hba
*hba
,
593 struct bnx2i_endpoint
*ep
)
595 write_lock_bh(&hba
->ep_rdwr_lock
);
596 list_add_tail(&ep
->link
, &hba
->ep_destroy_list
);
597 write_unlock_bh(&hba
->ep_rdwr_lock
);
602 * bnx2i_ep_destroy_list_del - add an entry to EP destroy list
604 * @hba: pointer to adapter instance
605 * @ep: pointer to endpoint (transport indentifier) structure
607 * EP destroy queue manager
609 static int bnx2i_ep_destroy_list_del(struct bnx2i_hba
*hba
,
610 struct bnx2i_endpoint
*ep
)
612 write_lock_bh(&hba
->ep_rdwr_lock
);
613 list_del_init(&ep
->link
);
614 write_unlock_bh(&hba
->ep_rdwr_lock
);
620 * bnx2i_ep_ofld_list_add - add an entry to ep offload pending list
621 * @hba: pointer to adapter instance
622 * @ep: pointer to endpoint (transport indentifier) structure
624 * pending conn offload completion queue manager
626 static int bnx2i_ep_ofld_list_add(struct bnx2i_hba
*hba
,
627 struct bnx2i_endpoint
*ep
)
629 write_lock_bh(&hba
->ep_rdwr_lock
);
630 list_add_tail(&ep
->link
, &hba
->ep_ofld_list
);
631 write_unlock_bh(&hba
->ep_rdwr_lock
);
636 * bnx2i_ep_ofld_list_del - add an entry to ep offload pending list
637 * @hba: pointer to adapter instance
638 * @ep: pointer to endpoint (transport indentifier) structure
640 * pending conn offload completion queue manager
642 static int bnx2i_ep_ofld_list_del(struct bnx2i_hba
*hba
,
643 struct bnx2i_endpoint
*ep
)
645 write_lock_bh(&hba
->ep_rdwr_lock
);
646 list_del_init(&ep
->link
);
647 write_unlock_bh(&hba
->ep_rdwr_lock
);
653 * bnx2i_find_ep_in_ofld_list - find iscsi_cid in pending list of endpoints
655 * @hba: pointer to adapter instance
656 * @iscsi_cid: iscsi context ID to find
659 struct bnx2i_endpoint
*
660 bnx2i_find_ep_in_ofld_list(struct bnx2i_hba
*hba
, u32 iscsi_cid
)
662 struct list_head
*list
;
663 struct list_head
*tmp
;
664 struct bnx2i_endpoint
*ep
;
666 read_lock_bh(&hba
->ep_rdwr_lock
);
667 list_for_each_safe(list
, tmp
, &hba
->ep_ofld_list
) {
668 ep
= (struct bnx2i_endpoint
*)list
;
670 if (ep
->ep_iscsi_cid
== iscsi_cid
)
674 read_unlock_bh(&hba
->ep_rdwr_lock
);
677 printk(KERN_ERR
"l5 cid %d not found\n", iscsi_cid
);
683 * bnx2i_find_ep_in_destroy_list - find iscsi_cid in destroy list
684 * @hba: pointer to adapter instance
685 * @iscsi_cid: iscsi context ID to find
688 struct bnx2i_endpoint
*
689 bnx2i_find_ep_in_destroy_list(struct bnx2i_hba
*hba
, u32 iscsi_cid
)
691 struct list_head
*list
;
692 struct list_head
*tmp
;
693 struct bnx2i_endpoint
*ep
;
695 read_lock_bh(&hba
->ep_rdwr_lock
);
696 list_for_each_safe(list
, tmp
, &hba
->ep_destroy_list
) {
697 ep
= (struct bnx2i_endpoint
*)list
;
699 if (ep
->ep_iscsi_cid
== iscsi_cid
)
703 read_unlock_bh(&hba
->ep_rdwr_lock
);
706 printk(KERN_ERR
"l5 cid %d not found\n", iscsi_cid
);
712 * bnx2i_setup_host_queue_size - assigns shost->can_queue param
713 * @hba: pointer to adapter instance
714 * @shost: scsi host pointer
716 * Initializes 'can_queue' parameter based on how many outstanding commands
717 * the device can handle. Each device 5708/5709/57710 has different
720 static void bnx2i_setup_host_queue_size(struct bnx2i_hba
*hba
,
721 struct Scsi_Host
*shost
)
723 if (test_bit(BNX2I_NX2_DEV_5708
, &hba
->cnic_dev_type
))
724 shost
->can_queue
= ISCSI_MAX_CMDS_PER_HBA_5708
;
725 else if (test_bit(BNX2I_NX2_DEV_5709
, &hba
->cnic_dev_type
))
726 shost
->can_queue
= ISCSI_MAX_CMDS_PER_HBA_5709
;
727 else if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
))
728 shost
->can_queue
= ISCSI_MAX_CMDS_PER_HBA_57710
;
730 shost
->can_queue
= ISCSI_MAX_CMDS_PER_HBA_5708
;
735 * bnx2i_alloc_hba - allocate and init adapter instance
736 * @cnic: cnic device pointer
738 * allocate & initialize adapter structure and call other
739 * support routines to do per adapter initialization
741 struct bnx2i_hba
*bnx2i_alloc_hba(struct cnic_dev
*cnic
)
743 struct Scsi_Host
*shost
;
744 struct bnx2i_hba
*hba
;
746 shost
= iscsi_host_alloc(&bnx2i_host_template
, sizeof(*hba
), 0);
749 shost
->dma_boundary
= cnic
->pcidev
->dma_mask
;
750 shost
->transportt
= bnx2i_scsi_xport_template
;
751 shost
->max_id
= ISCSI_MAX_CONNS_PER_HBA
;
752 shost
->max_channel
= 0;
753 shost
->max_lun
= 512;
754 shost
->max_cmd_len
= 16;
756 hba
= iscsi_host_priv(shost
);
758 hba
->netdev
= cnic
->netdev
;
759 /* Get PCI related information and update hba struct members */
760 hba
->pcidev
= cnic
->pcidev
;
761 pci_dev_get(hba
->pcidev
);
762 hba
->pci_did
= hba
->pcidev
->device
;
763 hba
->pci_vid
= hba
->pcidev
->vendor
;
764 hba
->pci_sdid
= hba
->pcidev
->subsystem_device
;
765 hba
->pci_svid
= hba
->pcidev
->subsystem_vendor
;
766 hba
->pci_func
= PCI_FUNC(hba
->pcidev
->devfn
);
767 hba
->pci_devno
= PCI_SLOT(hba
->pcidev
->devfn
);
768 bnx2i_identify_device(hba
);
770 bnx2i_identify_device(hba
);
771 bnx2i_setup_host_queue_size(hba
, shost
);
773 if (test_bit(BNX2I_NX2_DEV_5709
, &hba
->cnic_dev_type
)) {
774 hba
->regview
= ioremap_nocache(hba
->netdev
->base_addr
,
778 } else if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
)) {
779 hba
->regview
= ioremap_nocache(hba
->netdev
->base_addr
, 4096);
784 if (bnx2i_setup_mp_bdt(hba
))
787 INIT_LIST_HEAD(&hba
->ep_ofld_list
);
788 INIT_LIST_HEAD(&hba
->ep_destroy_list
);
789 rwlock_init(&hba
->ep_rdwr_lock
);
791 hba
->mtu_supported
= BNX2I_MAX_MTU_SUPPORTED
;
793 /* different values for 5708/5709/57710 */
794 hba
->max_active_conns
= ISCSI_MAX_CONNS_PER_HBA
;
796 if (bnx2i_setup_free_cid_que(hba
))
799 /* SQ/RQ/CQ size can be changed via sysfx interface */
800 if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
)) {
801 if (sq_size
&& sq_size
<= BNX2I_5770X_SQ_WQES_MAX
)
802 hba
->max_sqes
= sq_size
;
804 hba
->max_sqes
= BNX2I_5770X_SQ_WQES_DEFAULT
;
805 } else { /* 5706/5708/5709 */
806 if (sq_size
&& sq_size
<= BNX2I_570X_SQ_WQES_MAX
)
807 hba
->max_sqes
= sq_size
;
809 hba
->max_sqes
= BNX2I_570X_SQ_WQES_DEFAULT
;
812 hba
->max_rqes
= rq_size
;
813 hba
->max_cqes
= hba
->max_sqes
+ rq_size
;
814 if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
)) {
815 if (hba
->max_cqes
> BNX2I_5770X_CQ_WQES_MAX
)
816 hba
->max_cqes
= BNX2I_5770X_CQ_WQES_MAX
;
817 } else if (hba
->max_cqes
> BNX2I_570X_CQ_WQES_MAX
)
818 hba
->max_cqes
= BNX2I_570X_CQ_WQES_MAX
;
820 hba
->num_ccell
= hba
->max_sqes
/ 2;
822 spin_lock_init(&hba
->lock
);
823 mutex_init(&hba
->net_dev_lock
);
825 if (iscsi_host_add(shost
, &hba
->pcidev
->dev
))
830 bnx2i_release_free_cid_que(hba
);
832 bnx2i_free_mp_bdt(hba
);
835 iounmap(hba
->regview
);
839 pci_dev_put(hba
->pcidev
);
840 scsi_host_put(shost
);
845 * bnx2i_free_hba- releases hba structure and resources held by the adapter
846 * @hba: pointer to adapter instance
848 * free adapter structure and call various cleanup routines.
850 void bnx2i_free_hba(struct bnx2i_hba
*hba
)
852 struct Scsi_Host
*shost
= hba
->shost
;
854 iscsi_host_remove(shost
);
855 INIT_LIST_HEAD(&hba
->ep_ofld_list
);
856 INIT_LIST_HEAD(&hba
->ep_destroy_list
);
857 pci_dev_put(hba
->pcidev
);
860 iounmap(hba
->regview
);
863 bnx2i_free_mp_bdt(hba
);
864 bnx2i_release_free_cid_que(hba
);
865 iscsi_host_free(shost
);
869 * bnx2i_conn_free_login_resources - free DMA resources used for login process
870 * @hba: pointer to adapter instance
871 * @bnx2i_conn: iscsi connection pointer
873 * Login related resources, mostly BDT & payload DMA memory is freed
875 static void bnx2i_conn_free_login_resources(struct bnx2i_hba
*hba
,
876 struct bnx2i_conn
*bnx2i_conn
)
878 if (bnx2i_conn
->gen_pdu
.resp_bd_tbl
) {
879 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
880 bnx2i_conn
->gen_pdu
.resp_bd_tbl
,
881 bnx2i_conn
->gen_pdu
.resp_bd_dma
);
882 bnx2i_conn
->gen_pdu
.resp_bd_tbl
= NULL
;
885 if (bnx2i_conn
->gen_pdu
.req_bd_tbl
) {
886 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
887 bnx2i_conn
->gen_pdu
.req_bd_tbl
,
888 bnx2i_conn
->gen_pdu
.req_bd_dma
);
889 bnx2i_conn
->gen_pdu
.req_bd_tbl
= NULL
;
892 if (bnx2i_conn
->gen_pdu
.resp_buf
) {
893 dma_free_coherent(&hba
->pcidev
->dev
,
894 ISCSI_DEF_MAX_RECV_SEG_LEN
,
895 bnx2i_conn
->gen_pdu
.resp_buf
,
896 bnx2i_conn
->gen_pdu
.resp_dma_addr
);
897 bnx2i_conn
->gen_pdu
.resp_buf
= NULL
;
900 if (bnx2i_conn
->gen_pdu
.req_buf
) {
901 dma_free_coherent(&hba
->pcidev
->dev
,
902 ISCSI_DEF_MAX_RECV_SEG_LEN
,
903 bnx2i_conn
->gen_pdu
.req_buf
,
904 bnx2i_conn
->gen_pdu
.req_dma_addr
);
905 bnx2i_conn
->gen_pdu
.req_buf
= NULL
;
910 * bnx2i_conn_alloc_login_resources - alloc DMA resources for login/nop.
911 * @hba: pointer to adapter instance
912 * @bnx2i_conn: iscsi connection pointer
914 * Mgmt task DNA resources are allocated in this routine.
916 static int bnx2i_conn_alloc_login_resources(struct bnx2i_hba
*hba
,
917 struct bnx2i_conn
*bnx2i_conn
)
919 /* Allocate memory for login request/response buffers */
920 bnx2i_conn
->gen_pdu
.req_buf
=
921 dma_alloc_coherent(&hba
->pcidev
->dev
,
922 ISCSI_DEF_MAX_RECV_SEG_LEN
,
923 &bnx2i_conn
->gen_pdu
.req_dma_addr
,
925 if (bnx2i_conn
->gen_pdu
.req_buf
== NULL
)
926 goto login_req_buf_failure
;
928 bnx2i_conn
->gen_pdu
.req_buf_size
= 0;
929 bnx2i_conn
->gen_pdu
.req_wr_ptr
= bnx2i_conn
->gen_pdu
.req_buf
;
931 bnx2i_conn
->gen_pdu
.resp_buf
=
932 dma_alloc_coherent(&hba
->pcidev
->dev
,
933 ISCSI_DEF_MAX_RECV_SEG_LEN
,
934 &bnx2i_conn
->gen_pdu
.resp_dma_addr
,
936 if (bnx2i_conn
->gen_pdu
.resp_buf
== NULL
)
937 goto login_resp_buf_failure
;
939 bnx2i_conn
->gen_pdu
.resp_buf_size
= ISCSI_DEF_MAX_RECV_SEG_LEN
;
940 bnx2i_conn
->gen_pdu
.resp_wr_ptr
= bnx2i_conn
->gen_pdu
.resp_buf
;
942 bnx2i_conn
->gen_pdu
.req_bd_tbl
=
943 dma_alloc_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
944 &bnx2i_conn
->gen_pdu
.req_bd_dma
, GFP_KERNEL
);
945 if (bnx2i_conn
->gen_pdu
.req_bd_tbl
== NULL
)
946 goto login_req_bd_tbl_failure
;
948 bnx2i_conn
->gen_pdu
.resp_bd_tbl
=
949 dma_alloc_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
950 &bnx2i_conn
->gen_pdu
.resp_bd_dma
,
952 if (bnx2i_conn
->gen_pdu
.resp_bd_tbl
== NULL
)
953 goto login_resp_bd_tbl_failure
;
957 login_resp_bd_tbl_failure
:
958 dma_free_coherent(&hba
->pcidev
->dev
, PAGE_SIZE
,
959 bnx2i_conn
->gen_pdu
.req_bd_tbl
,
960 bnx2i_conn
->gen_pdu
.req_bd_dma
);
961 bnx2i_conn
->gen_pdu
.req_bd_tbl
= NULL
;
963 login_req_bd_tbl_failure
:
964 dma_free_coherent(&hba
->pcidev
->dev
, ISCSI_DEF_MAX_RECV_SEG_LEN
,
965 bnx2i_conn
->gen_pdu
.resp_buf
,
966 bnx2i_conn
->gen_pdu
.resp_dma_addr
);
967 bnx2i_conn
->gen_pdu
.resp_buf
= NULL
;
968 login_resp_buf_failure
:
969 dma_free_coherent(&hba
->pcidev
->dev
, ISCSI_DEF_MAX_RECV_SEG_LEN
,
970 bnx2i_conn
->gen_pdu
.req_buf
,
971 bnx2i_conn
->gen_pdu
.req_dma_addr
);
972 bnx2i_conn
->gen_pdu
.req_buf
= NULL
;
973 login_req_buf_failure
:
974 iscsi_conn_printk(KERN_ERR
, bnx2i_conn
->cls_conn
->dd_data
,
975 "login resource alloc failed!!\n");
982 * bnx2i_iscsi_prep_generic_pdu_bd - prepares BD table.
983 * @bnx2i_conn: iscsi connection pointer
985 * Allocates buffers and BD tables before shipping requests to cnic
986 * for PDUs prepared by 'iscsid' daemon
988 static void bnx2i_iscsi_prep_generic_pdu_bd(struct bnx2i_conn
*bnx2i_conn
)
990 struct iscsi_bd
*bd_tbl
;
992 bd_tbl
= (struct iscsi_bd
*) bnx2i_conn
->gen_pdu
.req_bd_tbl
;
994 bd_tbl
->buffer_addr_hi
=
995 (u32
) ((u64
) bnx2i_conn
->gen_pdu
.req_dma_addr
>> 32);
996 bd_tbl
->buffer_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.req_dma_addr
;
997 bd_tbl
->buffer_length
= bnx2i_conn
->gen_pdu
.req_wr_ptr
-
998 bnx2i_conn
->gen_pdu
.req_buf
;
999 bd_tbl
->reserved0
= 0;
1000 bd_tbl
->flags
= ISCSI_BD_LAST_IN_BD_CHAIN
|
1001 ISCSI_BD_FIRST_IN_BD_CHAIN
;
1003 bd_tbl
= (struct iscsi_bd
*) bnx2i_conn
->gen_pdu
.resp_bd_tbl
;
1004 bd_tbl
->buffer_addr_hi
= (u64
) bnx2i_conn
->gen_pdu
.resp_dma_addr
>> 32;
1005 bd_tbl
->buffer_addr_lo
= (u32
) bnx2i_conn
->gen_pdu
.resp_dma_addr
;
1006 bd_tbl
->buffer_length
= ISCSI_DEF_MAX_RECV_SEG_LEN
;
1007 bd_tbl
->reserved0
= 0;
1008 bd_tbl
->flags
= ISCSI_BD_LAST_IN_BD_CHAIN
|
1009 ISCSI_BD_FIRST_IN_BD_CHAIN
;
1014 * bnx2i_iscsi_send_generic_request - called to send mgmt tasks.
1015 * @task: transport layer task pointer
1017 * called to transmit PDUs prepared by the 'iscsid' daemon. iSCSI login,
1018 * Nop-out and Logout requests flow through this path.
1020 static int bnx2i_iscsi_send_generic_request(struct iscsi_task
*task
)
1022 struct bnx2i_cmd
*cmd
= task
->dd_data
;
1023 struct bnx2i_conn
*bnx2i_conn
= cmd
->conn
;
1028 bnx2i_iscsi_prep_generic_pdu_bd(bnx2i_conn
);
1029 switch (task
->hdr
->opcode
& ISCSI_OPCODE_MASK
) {
1030 case ISCSI_OP_LOGIN
:
1031 bnx2i_send_iscsi_login(bnx2i_conn
, task
);
1033 case ISCSI_OP_NOOP_OUT
:
1034 data_len
= bnx2i_conn
->gen_pdu
.req_buf_size
;
1035 buf
= bnx2i_conn
->gen_pdu
.req_buf
;
1037 rc
= bnx2i_send_iscsi_nopout(bnx2i_conn
, task
,
1041 rc
= bnx2i_send_iscsi_nopout(bnx2i_conn
, task
,
1045 case ISCSI_OP_LOGOUT
:
1046 rc
= bnx2i_send_iscsi_logout(bnx2i_conn
, task
);
1048 case ISCSI_OP_SCSI_TMFUNC
:
1049 rc
= bnx2i_send_iscsi_tmf(bnx2i_conn
, task
);
1052 iscsi_conn_printk(KERN_ALERT
, bnx2i_conn
->cls_conn
->dd_data
,
1053 "send_gen: unsupported op 0x%x\n",
1060 /**********************************************************************
1062 **********************************************************************/
1065 * bnx2i_cpy_scsi_cdb - copies LUN & CDB fields in required format to sq wqe
1066 * @sc: SCSI-ML command pointer
1067 * @cmd: iscsi cmd pointer
1069 static void bnx2i_cpy_scsi_cdb(struct scsi_cmnd
*sc
, struct bnx2i_cmd
*cmd
)
1077 int_to_scsilun(sc
->device
->lun
, (struct scsi_lun
*) scsi_lun
);
1078 cmd
->req
.lun
[0] = be32_to_cpu(scsi_lun
[0]);
1079 cmd
->req
.lun
[1] = be32_to_cpu(scsi_lun
[1]);
1081 lpcnt
= cmd
->scsi_cmd
->cmd_len
/ sizeof(dword
);
1082 srcp
= (u8
*) sc
->cmnd
;
1083 dstp
= (u32
*) cmd
->req
.cdb
;
1085 memcpy(&dword
, (const void *) srcp
, 4);
1086 *dstp
= cpu_to_be32(dword
);
1090 if (sc
->cmd_len
& 0x3) {
1091 dword
= (u32
) srcp
[0] | ((u32
) srcp
[1] << 8);
1092 *dstp
= cpu_to_be32(dword
);
1096 static void bnx2i_cleanup_task(struct iscsi_task
*task
)
1098 struct iscsi_conn
*conn
= task
->conn
;
1099 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1100 struct bnx2i_hba
*hba
= bnx2i_conn
->hba
;
1103 * mgmt task or cmd was never sent to us to transmit.
1105 if (!task
->sc
|| task
->state
== ISCSI_TASK_PENDING
)
1108 * need to clean-up task context to claim dma buffers
1110 if (task
->state
== ISCSI_TASK_ABRT_TMF
) {
1111 bnx2i_send_cmd_cleanup_req(hba
, task
->dd_data
);
1113 spin_unlock_bh(&conn
->session
->lock
);
1114 wait_for_completion_timeout(&bnx2i_conn
->cmd_cleanup_cmpl
,
1115 msecs_to_jiffies(ISCSI_CMD_CLEANUP_TIMEOUT
));
1116 spin_lock_bh(&conn
->session
->lock
);
1118 bnx2i_iscsi_unmap_sg_list(task
->dd_data
);
1122 * bnx2i_mtask_xmit - transmit mtask to chip for further processing
1123 * @conn: transport layer conn structure pointer
1124 * @task: transport layer command structure pointer
1127 bnx2i_mtask_xmit(struct iscsi_conn
*conn
, struct iscsi_task
*task
)
1129 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1130 struct bnx2i_cmd
*cmd
= task
->dd_data
;
1132 memset(bnx2i_conn
->gen_pdu
.req_buf
, 0, ISCSI_DEF_MAX_RECV_SEG_LEN
);
1134 bnx2i_setup_cmd_wqe_template(cmd
);
1135 bnx2i_conn
->gen_pdu
.req_buf_size
= task
->data_count
;
1136 if (task
->data_count
) {
1137 memcpy(bnx2i_conn
->gen_pdu
.req_buf
, task
->data
,
1139 bnx2i_conn
->gen_pdu
.req_wr_ptr
=
1140 bnx2i_conn
->gen_pdu
.req_buf
+ task
->data_count
;
1142 cmd
->conn
= conn
->dd_data
;
1143 cmd
->scsi_cmd
= NULL
;
1144 return bnx2i_iscsi_send_generic_request(task
);
1148 * bnx2i_task_xmit - transmit iscsi command to chip for further processing
1149 * @task: transport layer command structure pointer
1151 * maps SG buffers and send request to chip/firmware in the form of SQ WQE
1153 static int bnx2i_task_xmit(struct iscsi_task
*task
)
1155 struct iscsi_conn
*conn
= task
->conn
;
1156 struct iscsi_session
*session
= conn
->session
;
1157 struct Scsi_Host
*shost
= iscsi_session_to_shost(session
->cls_session
);
1158 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1159 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1160 struct scsi_cmnd
*sc
= task
->sc
;
1161 struct bnx2i_cmd
*cmd
= task
->dd_data
;
1162 struct iscsi_cmd
*hdr
= (struct iscsi_cmd
*) task
->hdr
;
1165 * If there is no scsi_cmnd this must be a mgmt task
1168 return bnx2i_mtask_xmit(conn
, task
);
1170 bnx2i_setup_cmd_wqe_template(cmd
);
1171 cmd
->req
.op_code
= ISCSI_OP_SCSI_CMD
;
1172 cmd
->conn
= bnx2i_conn
;
1174 cmd
->req
.total_data_transfer_length
= scsi_bufflen(sc
);
1175 cmd
->req
.cmd_sn
= be32_to_cpu(hdr
->cmdsn
);
1177 bnx2i_iscsi_map_sg_list(cmd
);
1178 bnx2i_cpy_scsi_cdb(sc
, cmd
);
1180 cmd
->req
.op_attr
= ISCSI_ATTR_SIMPLE
;
1181 if (sc
->sc_data_direction
== DMA_TO_DEVICE
) {
1182 cmd
->req
.op_attr
|= ISCSI_CMD_REQUEST_WRITE
;
1183 cmd
->req
.itt
= task
->itt
|
1184 (ISCSI_TASK_TYPE_WRITE
<< ISCSI_CMD_REQUEST_TYPE_SHIFT
);
1185 bnx2i_setup_write_cmd_bd_info(task
);
1187 if (scsi_bufflen(sc
))
1188 cmd
->req
.op_attr
|= ISCSI_CMD_REQUEST_READ
;
1189 cmd
->req
.itt
= task
->itt
|
1190 (ISCSI_TASK_TYPE_READ
<< ISCSI_CMD_REQUEST_TYPE_SHIFT
);
1193 cmd
->req
.num_bds
= cmd
->io_tbl
.bd_valid
;
1194 if (!cmd
->io_tbl
.bd_valid
) {
1195 cmd
->req
.bd_list_addr_lo
= (u32
) hba
->mp_bd_dma
;
1196 cmd
->req
.bd_list_addr_hi
= (u32
) ((u64
) hba
->mp_bd_dma
>> 32);
1197 cmd
->req
.num_bds
= 1;
1200 bnx2i_send_iscsi_scsicmd(bnx2i_conn
, cmd
);
1205 * bnx2i_session_create - create a new iscsi session
1206 * @cmds_max: max commands supported
1207 * @qdepth: scsi queue depth to support
1208 * @initial_cmdsn: initial iscsi CMDSN to be used for this session
1210 * Creates a new iSCSI session instance on given device.
1212 static struct iscsi_cls_session
*
1213 bnx2i_session_create(struct iscsi_endpoint
*ep
,
1214 uint16_t cmds_max
, uint16_t qdepth
,
1215 uint32_t initial_cmdsn
)
1217 struct Scsi_Host
*shost
;
1218 struct iscsi_cls_session
*cls_session
;
1219 struct bnx2i_hba
*hba
;
1220 struct bnx2i_endpoint
*bnx2i_ep
;
1223 printk(KERN_ERR
"bnx2i: missing ep.\n");
1227 bnx2i_ep
= ep
->dd_data
;
1228 shost
= bnx2i_ep
->hba
->shost
;
1229 hba
= iscsi_host_priv(shost
);
1230 if (bnx2i_adapter_ready(hba
))
1234 * user can override hw limit as long as it is within
1237 if (cmds_max
> hba
->max_sqes
)
1238 cmds_max
= hba
->max_sqes
;
1239 else if (cmds_max
< BNX2I_SQ_WQES_MIN
)
1240 cmds_max
= BNX2I_SQ_WQES_MIN
;
1242 cls_session
= iscsi_session_setup(&bnx2i_iscsi_transport
, shost
,
1243 cmds_max
, 0, sizeof(struct bnx2i_cmd
),
1244 initial_cmdsn
, ISCSI_MAX_TARGET
);
1248 if (bnx2i_setup_cmd_pool(hba
, cls_session
->dd_data
))
1249 goto session_teardown
;
1253 iscsi_session_teardown(cls_session
);
1259 * bnx2i_session_destroy - destroys iscsi session
1260 * @cls_session: pointer to iscsi cls session
1262 * Destroys previously created iSCSI session instance and releases
1263 * all resources held by it
1265 static void bnx2i_session_destroy(struct iscsi_cls_session
*cls_session
)
1267 struct iscsi_session
*session
= cls_session
->dd_data
;
1268 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
1269 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1271 bnx2i_destroy_cmd_pool(hba
, session
);
1272 iscsi_session_teardown(cls_session
);
1277 * bnx2i_conn_create - create iscsi connection instance
1278 * @cls_session: pointer to iscsi cls session
1279 * @cid: iscsi cid as per rfc (not NX2's CID terminology)
1281 * Creates a new iSCSI connection instance for a given session
1283 static struct iscsi_cls_conn
*
1284 bnx2i_conn_create(struct iscsi_cls_session
*cls_session
, uint32_t cid
)
1286 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
1287 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1288 struct bnx2i_conn
*bnx2i_conn
;
1289 struct iscsi_cls_conn
*cls_conn
;
1290 struct iscsi_conn
*conn
;
1292 cls_conn
= iscsi_conn_setup(cls_session
, sizeof(*bnx2i_conn
),
1296 conn
= cls_conn
->dd_data
;
1298 bnx2i_conn
= conn
->dd_data
;
1299 bnx2i_conn
->cls_conn
= cls_conn
;
1300 bnx2i_conn
->hba
= hba
;
1301 /* 'ep' ptr will be assigned in bind() call */
1302 bnx2i_conn
->ep
= NULL
;
1303 init_completion(&bnx2i_conn
->cmd_cleanup_cmpl
);
1305 if (bnx2i_conn_alloc_login_resources(hba
, bnx2i_conn
)) {
1306 iscsi_conn_printk(KERN_ALERT
, conn
,
1307 "conn_new: login resc alloc failed!!\n");
1314 iscsi_conn_teardown(cls_conn
);
1319 * bnx2i_conn_bind - binds iscsi sess, conn and ep objects together
1320 * @cls_session: pointer to iscsi cls session
1321 * @cls_conn: pointer to iscsi cls conn
1322 * @transport_fd: 64-bit EP handle
1323 * @is_leading: leading connection on this session?
1325 * Binds together iSCSI session instance, iSCSI connection instance
1326 * and the TCP connection. This routine returns error code if
1327 * TCP connection does not belong on the device iSCSI sess/conn
1330 static int bnx2i_conn_bind(struct iscsi_cls_session
*cls_session
,
1331 struct iscsi_cls_conn
*cls_conn
,
1332 uint64_t transport_fd
, int is_leading
)
1334 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
1335 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1336 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
1337 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1338 struct bnx2i_endpoint
*bnx2i_ep
;
1339 struct iscsi_endpoint
*ep
;
1342 ep
= iscsi_lookup_endpoint(transport_fd
);
1346 bnx2i_ep
= ep
->dd_data
;
1347 if ((bnx2i_ep
->state
== EP_STATE_TCP_FIN_RCVD
) ||
1348 (bnx2i_ep
->state
== EP_STATE_TCP_RST_RCVD
))
1349 /* Peer disconnect via' FIN or RST */
1352 if (iscsi_conn_bind(cls_session
, cls_conn
, is_leading
))
1355 if (bnx2i_ep
->hba
!= hba
) {
1356 /* Error - TCP connection does not belong to this device
1358 iscsi_conn_printk(KERN_ALERT
, cls_conn
->dd_data
,
1359 "conn bind, ep=0x%p (%s) does not",
1360 bnx2i_ep
, bnx2i_ep
->hba
->netdev
->name
);
1361 iscsi_conn_printk(KERN_ALERT
, cls_conn
->dd_data
,
1362 "belong to hba (%s)\n",
1367 bnx2i_ep
->conn
= bnx2i_conn
;
1368 bnx2i_conn
->ep
= bnx2i_ep
;
1369 bnx2i_conn
->iscsi_conn_cid
= bnx2i_ep
->ep_iscsi_cid
;
1370 bnx2i_conn
->fw_cid
= bnx2i_ep
->ep_cid
;
1372 ret_code
= bnx2i_bind_conn_to_iscsi_cid(hba
, bnx2i_conn
,
1373 bnx2i_ep
->ep_iscsi_cid
);
1375 /* 5706/5708/5709 FW takes RQ as full when initiated, but for 57710
1376 * driver needs to explicitly replenish RQ index during setup.
1378 if (test_bit(BNX2I_NX2_DEV_57710
, &bnx2i_ep
->hba
->cnic_dev_type
))
1379 bnx2i_put_rq_buf(bnx2i_conn
, 0);
1381 bnx2i_arm_cq_event_coalescing(bnx2i_conn
->ep
, CNIC_ARM_CQE
);
1387 * bnx2i_conn_destroy - destroy iscsi connection instance & release resources
1388 * @cls_conn: pointer to iscsi cls conn
1390 * Destroy an iSCSI connection instance and release memory resources held by
1393 static void bnx2i_conn_destroy(struct iscsi_cls_conn
*cls_conn
)
1395 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
1396 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1397 struct Scsi_Host
*shost
;
1398 struct bnx2i_hba
*hba
;
1400 shost
= iscsi_session_to_shost(iscsi_conn_to_session(cls_conn
));
1401 hba
= iscsi_host_priv(shost
);
1403 bnx2i_conn_free_login_resources(hba
, bnx2i_conn
);
1404 iscsi_conn_teardown(cls_conn
);
1409 * bnx2i_conn_get_param - return iscsi connection parameter to caller
1410 * @cls_conn: pointer to iscsi cls conn
1411 * @param: parameter type identifier
1412 * @buf: buffer pointer
1414 * returns iSCSI connection parameters
1416 static int bnx2i_conn_get_param(struct iscsi_cls_conn
*cls_conn
,
1417 enum iscsi_param param
, char *buf
)
1419 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
1420 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1424 case ISCSI_PARAM_CONN_PORT
:
1426 len
= sprintf(buf
, "%hu\n",
1427 bnx2i_conn
->ep
->cm_sk
->dst_port
);
1429 case ISCSI_PARAM_CONN_ADDRESS
:
1431 len
= sprintf(buf
, NIPQUAD_FMT
"\n",
1432 NIPQUAD(bnx2i_conn
->ep
->cm_sk
->dst_ip
));
1435 return iscsi_conn_get_param(cls_conn
, param
, buf
);
1442 * bnx2i_host_get_param - returns host (adapter) related parameters
1443 * @shost: scsi host pointer
1444 * @param: parameter type identifier
1445 * @buf: buffer pointer
1447 static int bnx2i_host_get_param(struct Scsi_Host
*shost
,
1448 enum iscsi_host_param param
, char *buf
)
1450 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1454 case ISCSI_HOST_PARAM_HWADDRESS
:
1455 len
= sysfs_format_mac(buf
, hba
->cnic
->mac_addr
, 6);
1457 case ISCSI_HOST_PARAM_NETDEV_NAME
:
1458 len
= sprintf(buf
, "%s\n", hba
->netdev
->name
);
1461 return iscsi_host_get_param(shost
, param
, buf
);
1467 * bnx2i_conn_start - completes iscsi connection migration to FFP
1468 * @cls_conn: pointer to iscsi cls conn
1470 * last call in FFP migration to handover iscsi conn to the driver
1472 static int bnx2i_conn_start(struct iscsi_cls_conn
*cls_conn
)
1474 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
1475 struct bnx2i_conn
*bnx2i_conn
= conn
->dd_data
;
1477 bnx2i_conn
->ep
->state
= EP_STATE_ULP_UPDATE_START
;
1478 bnx2i_update_iscsi_conn(conn
);
1481 * this should normally not sleep for a long time so it should
1482 * not disrupt the caller.
1484 bnx2i_conn
->ep
->ofld_timer
.expires
= 1 * HZ
+ jiffies
;
1485 bnx2i_conn
->ep
->ofld_timer
.function
= bnx2i_ep_ofld_timer
;
1486 bnx2i_conn
->ep
->ofld_timer
.data
= (unsigned long) bnx2i_conn
->ep
;
1487 add_timer(&bnx2i_conn
->ep
->ofld_timer
);
1488 /* update iSCSI context for this conn, wait for CNIC to complete */
1489 wait_event_interruptible(bnx2i_conn
->ep
->ofld_wait
,
1490 bnx2i_conn
->ep
->state
!= EP_STATE_ULP_UPDATE_START
);
1492 if (signal_pending(current
))
1493 flush_signals(current
);
1494 del_timer_sync(&bnx2i_conn
->ep
->ofld_timer
);
1496 iscsi_conn_start(cls_conn
);
1502 * bnx2i_conn_get_stats - returns iSCSI stats
1503 * @cls_conn: pointer to iscsi cls conn
1504 * @stats: pointer to iscsi statistic struct
1506 static void bnx2i_conn_get_stats(struct iscsi_cls_conn
*cls_conn
,
1507 struct iscsi_stats
*stats
)
1509 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
1511 stats
->txdata_octets
= conn
->txdata_octets
;
1512 stats
->rxdata_octets
= conn
->rxdata_octets
;
1513 stats
->scsicmd_pdus
= conn
->scsicmd_pdus_cnt
;
1514 stats
->dataout_pdus
= conn
->dataout_pdus_cnt
;
1515 stats
->scsirsp_pdus
= conn
->scsirsp_pdus_cnt
;
1516 stats
->datain_pdus
= conn
->datain_pdus_cnt
;
1517 stats
->r2t_pdus
= conn
->r2t_pdus_cnt
;
1518 stats
->tmfcmd_pdus
= conn
->tmfcmd_pdus_cnt
;
1519 stats
->tmfrsp_pdus
= conn
->tmfrsp_pdus_cnt
;
1520 stats
->custom_length
= 3;
1521 strcpy(stats
->custom
[2].desc
, "eh_abort_cnt");
1522 stats
->custom
[2].value
= conn
->eh_abort_cnt
;
1523 stats
->digest_err
= 0;
1524 stats
->timeout_err
= 0;
1525 stats
->custom_length
= 0;
1530 * bnx2i_check_route - checks if target IP route belongs to one of NX2 devices
1531 * @dst_addr: target IP address
1533 * check if route resolves to BNX2 device
1535 static struct bnx2i_hba
*bnx2i_check_route(struct sockaddr
*dst_addr
)
1537 struct sockaddr_in
*desti
= (struct sockaddr_in
*) dst_addr
;
1538 struct bnx2i_hba
*hba
;
1539 struct cnic_dev
*cnic
= NULL
;
1541 bnx2i_reg_dev_all();
1543 hba
= get_adapter_list_head();
1544 if (hba
&& hba
->cnic
)
1545 cnic
= hba
->cnic
->cm_select_dev(desti
, CNIC_ULP_ISCSI
);
1547 printk(KERN_ALERT
"bnx2i: no route,"
1548 "can't connect using cnic\n");
1551 hba
= bnx2i_find_hba_for_cnic(cnic
);
1555 if (bnx2i_adapter_ready(hba
)) {
1556 printk(KERN_ALERT
"bnx2i: check route, hba not found\n");
1559 if (hba
->netdev
->mtu
> hba
->mtu_supported
) {
1560 printk(KERN_ALERT
"bnx2i: %s network i/f mtu is set to %d\n",
1561 hba
->netdev
->name
, hba
->netdev
->mtu
);
1562 printk(KERN_ALERT
"bnx2i: iSCSI HBA can support mtu of %d\n",
1563 hba
->mtu_supported
);
1573 * bnx2i_tear_down_conn - tear down iscsi/tcp connection and free resources
1574 * @hba: pointer to adapter instance
1575 * @ep: endpoint (transport indentifier) structure
1577 * destroys cm_sock structure and on chip iscsi context
1579 static int bnx2i_tear_down_conn(struct bnx2i_hba
*hba
,
1580 struct bnx2i_endpoint
*ep
)
1582 if (test_bit(BNX2I_CNIC_REGISTERED
, &hba
->reg_with_cnic
))
1583 hba
->cnic
->cm_destroy(ep
->cm_sk
);
1585 if (test_bit(ADAPTER_STATE_GOING_DOWN
, &ep
->hba
->adapter_state
))
1586 ep
->state
= EP_STATE_DISCONN_COMPL
;
1588 if (test_bit(BNX2I_NX2_DEV_57710
, &hba
->cnic_dev_type
) &&
1589 ep
->state
== EP_STATE_DISCONN_TIMEDOUT
) {
1590 printk(KERN_ALERT
"bnx2i - ERROR - please submit GRC Dump,"
1591 " NW/PCIe trace, driver msgs to developers"
1596 ep
->state
= EP_STATE_CLEANUP_START
;
1597 init_timer(&ep
->ofld_timer
);
1598 ep
->ofld_timer
.expires
= 10*HZ
+ jiffies
;
1599 ep
->ofld_timer
.function
= bnx2i_ep_ofld_timer
;
1600 ep
->ofld_timer
.data
= (unsigned long) ep
;
1601 add_timer(&ep
->ofld_timer
);
1603 bnx2i_ep_destroy_list_add(hba
, ep
);
1605 /* destroy iSCSI context, wait for it to complete */
1606 bnx2i_send_conn_destroy(hba
, ep
);
1607 wait_event_interruptible(ep
->ofld_wait
,
1608 (ep
->state
!= EP_STATE_CLEANUP_START
));
1610 if (signal_pending(current
))
1611 flush_signals(current
);
1612 del_timer_sync(&ep
->ofld_timer
);
1614 bnx2i_ep_destroy_list_del(hba
, ep
);
1616 if (ep
->state
!= EP_STATE_CLEANUP_CMPL
)
1617 /* should never happen */
1618 printk(KERN_ALERT
"bnx2i - conn destroy failed\n");
1625 * bnx2i_ep_connect - establish TCP connection to target portal
1627 * @dst_addr: target IP address
1628 * @non_blocking: blocking or non-blocking call
1630 * this routine initiates the TCP/IP connection by invoking Option-2 i/f
1631 * with l5_core and the CNIC. This is a multi-step process of resolving
1632 * route to target, create a iscsi connection context, handshaking with
1633 * CNIC module to create/initialize the socket struct and finally
1634 * sending down option-2 request to complete TCP 3-way handshake
1636 static struct iscsi_endpoint
*bnx2i_ep_connect(struct Scsi_Host
*shost
,
1637 struct sockaddr
*dst_addr
,
1640 u32 iscsi_cid
= BNX2I_CID_RESERVED
;
1641 struct sockaddr_in
*desti
= (struct sockaddr_in
*) dst_addr
;
1642 struct sockaddr_in6
*desti6
;
1643 struct bnx2i_endpoint
*bnx2i_ep
;
1644 struct bnx2i_hba
*hba
;
1645 struct cnic_dev
*cnic
;
1646 struct cnic_sockaddr saddr
;
1647 struct iscsi_endpoint
*ep
;
1651 /* driver is given scsi host to work with */
1652 hba
= iscsi_host_priv(shost
);
1653 /* Register the device with cnic if not already done so */
1654 bnx2i_register_device(hba
);
1657 * check if the given destination can be reached through
1658 * a iscsi capable NetXtreme2 device
1660 hba
= bnx2i_check_route(dst_addr
);
1668 ep
= bnx2i_alloc_ep(hba
);
1673 bnx2i_ep
= ep
->dd_data
;
1675 mutex_lock(&hba
->net_dev_lock
);
1676 if (bnx2i_adapter_ready(hba
)) {
1681 bnx2i_ep
->num_active_cmds
= 0;
1682 iscsi_cid
= bnx2i_alloc_iscsi_cid(hba
);
1683 if (iscsi_cid
== -1) {
1684 printk(KERN_ALERT
"alloc_ep: unable to allocate iscsi cid\n");
1688 bnx2i_ep
->hba_age
= hba
->age
;
1690 rc
= bnx2i_alloc_qp_resc(hba
, bnx2i_ep
);
1692 printk(KERN_ALERT
"bnx2i: ep_conn, alloc QP resc error\n");
1697 bnx2i_ep
->ep_iscsi_cid
= (u16
)iscsi_cid
;
1698 bnx2i_ep
->state
= EP_STATE_OFLD_START
;
1699 bnx2i_ep_ofld_list_add(hba
, bnx2i_ep
);
1701 init_timer(&bnx2i_ep
->ofld_timer
);
1702 bnx2i_ep
->ofld_timer
.expires
= 2 * HZ
+ jiffies
;
1703 bnx2i_ep
->ofld_timer
.function
= bnx2i_ep_ofld_timer
;
1704 bnx2i_ep
->ofld_timer
.data
= (unsigned long) bnx2i_ep
;
1705 add_timer(&bnx2i_ep
->ofld_timer
);
1707 bnx2i_send_conn_ofld_req(hba
, bnx2i_ep
);
1709 /* Wait for CNIC hardware to setup conn context and return 'cid' */
1710 wait_event_interruptible(bnx2i_ep
->ofld_wait
,
1711 bnx2i_ep
->state
!= EP_STATE_OFLD_START
);
1713 if (signal_pending(current
))
1714 flush_signals(current
);
1715 del_timer_sync(&bnx2i_ep
->ofld_timer
);
1717 bnx2i_ep_ofld_list_del(hba
, bnx2i_ep
);
1719 if (bnx2i_ep
->state
!= EP_STATE_OFLD_COMPL
) {
1724 rc
= cnic
->cm_create(cnic
, CNIC_ULP_ISCSI
, bnx2i_ep
->ep_cid
,
1725 iscsi_cid
, &bnx2i_ep
->cm_sk
, bnx2i_ep
);
1731 bnx2i_ep
->cm_sk
->rcv_buf
= 256 * 1024;
1732 bnx2i_ep
->cm_sk
->snd_buf
= 256 * 1024;
1733 clear_bit(SK_TCP_TIMESTAMP
, &bnx2i_ep
->cm_sk
->tcp_flags
);
1735 memset(&saddr
, 0, sizeof(saddr
));
1736 if (dst_addr
->sa_family
== AF_INET
) {
1737 desti
= (struct sockaddr_in
*) dst_addr
;
1738 saddr
.remote
.v4
= *desti
;
1739 saddr
.local
.v4
.sin_family
= desti
->sin_family
;
1740 } else if (dst_addr
->sa_family
== AF_INET6
) {
1741 desti6
= (struct sockaddr_in6
*) dst_addr
;
1742 saddr
.remote
.v6
= *desti6
;
1743 saddr
.local
.v6
.sin6_family
= desti6
->sin6_family
;
1746 bnx2i_ep
->timestamp
= jiffies
;
1747 bnx2i_ep
->state
= EP_STATE_CONNECT_START
;
1748 if (!test_bit(BNX2I_CNIC_REGISTERED
, &hba
->reg_with_cnic
)) {
1752 rc
= cnic
->cm_connect(bnx2i_ep
->cm_sk
, &saddr
);
1757 if (bnx2i_map_ep_dbell_regs(bnx2i_ep
))
1759 mutex_unlock(&hba
->net_dev_lock
);
1763 if (bnx2i_tear_down_conn(hba
, bnx2i_ep
)) {
1764 mutex_unlock(&hba
->net_dev_lock
);
1770 bnx2i_free_qp_resc(hba
, bnx2i_ep
);
1773 mutex_unlock(&hba
->net_dev_lock
);
1775 bnx2i_unreg_dev_all();
1781 * bnx2i_ep_poll - polls for TCP connection establishement
1782 * @ep: TCP connection (endpoint) handle
1783 * @timeout_ms: timeout value in milli secs
1785 * polls for TCP connect request to complete
1787 static int bnx2i_ep_poll(struct iscsi_endpoint
*ep
, int timeout_ms
)
1789 struct bnx2i_endpoint
*bnx2i_ep
;
1792 bnx2i_ep
= ep
->dd_data
;
1793 if ((bnx2i_ep
->state
== EP_STATE_IDLE
) ||
1794 (bnx2i_ep
->state
== EP_STATE_CONNECT_FAILED
) ||
1795 (bnx2i_ep
->state
== EP_STATE_OFLD_FAILED
))
1797 if (bnx2i_ep
->state
== EP_STATE_CONNECT_COMPL
)
1800 rc
= wait_event_interruptible_timeout(bnx2i_ep
->ofld_wait
,
1801 ((bnx2i_ep
->state
==
1802 EP_STATE_OFLD_FAILED
) ||
1804 EP_STATE_CONNECT_FAILED
) ||
1806 EP_STATE_CONNECT_COMPL
)),
1807 msecs_to_jiffies(timeout_ms
));
1808 if (!rc
|| (bnx2i_ep
->state
== EP_STATE_OFLD_FAILED
))
1814 return 0; /* timeout */
1821 * bnx2i_ep_tcp_conn_active - check EP state transition
1822 * @ep: endpoint pointer
1824 * check if underlying TCP connection is active
1826 static int bnx2i_ep_tcp_conn_active(struct bnx2i_endpoint
*bnx2i_ep
)
1829 int cnic_dev_10g
= 0;
1831 if (test_bit(BNX2I_NX2_DEV_57710
, &bnx2i_ep
->hba
->cnic_dev_type
))
1834 switch (bnx2i_ep
->state
) {
1835 case EP_STATE_CONNECT_START
:
1836 case EP_STATE_CLEANUP_FAILED
:
1837 case EP_STATE_OFLD_FAILED
:
1838 case EP_STATE_DISCONN_TIMEDOUT
:
1841 case EP_STATE_CONNECT_COMPL
:
1842 case EP_STATE_ULP_UPDATE_START
:
1843 case EP_STATE_ULP_UPDATE_COMPL
:
1844 case EP_STATE_TCP_FIN_RCVD
:
1845 case EP_STATE_ULP_UPDATE_FAILED
:
1848 case EP_STATE_TCP_RST_RCVD
:
1851 case EP_STATE_CONNECT_FAILED
:
1866 * bnx2i_ep_disconnect - executes TCP connection teardown process
1867 * @ep: TCP connection (endpoint) handle
1869 * executes TCP connection teardown process
1871 static void bnx2i_ep_disconnect(struct iscsi_endpoint
*ep
)
1873 struct bnx2i_endpoint
*bnx2i_ep
;
1874 struct bnx2i_conn
*bnx2i_conn
= NULL
;
1875 struct iscsi_session
*session
= NULL
;
1876 struct iscsi_conn
*conn
;
1877 struct cnic_dev
*cnic
;
1878 struct bnx2i_hba
*hba
;
1880 bnx2i_ep
= ep
->dd_data
;
1882 /* driver should not attempt connection cleanup until TCP_CONNECT
1883 * completes either successfully or fails. Timeout is 9-secs, so
1884 * wait for it to complete
1886 while ((bnx2i_ep
->state
== EP_STATE_CONNECT_START
) &&
1887 !time_after(jiffies
, bnx2i_ep
->timestamp
+ (12 * HZ
)))
1890 if (bnx2i_ep
->conn
) {
1891 bnx2i_conn
= bnx2i_ep
->conn
;
1892 conn
= bnx2i_conn
->cls_conn
->dd_data
;
1893 session
= conn
->session
;
1895 iscsi_suspend_queue(conn
);
1898 hba
= bnx2i_ep
->hba
;
1899 if (bnx2i_ep
->state
== EP_STATE_IDLE
)
1900 goto return_bnx2i_ep
;
1903 mutex_lock(&hba
->net_dev_lock
);
1905 if (!test_bit(ADAPTER_STATE_UP
, &hba
->adapter_state
))
1907 if (bnx2i_ep
->hba_age
!= hba
->age
)
1910 if (!bnx2i_ep_tcp_conn_active(bnx2i_ep
))
1913 bnx2i_ep
->state
= EP_STATE_DISCONN_START
;
1915 init_timer(&bnx2i_ep
->ofld_timer
);
1916 bnx2i_ep
->ofld_timer
.expires
= 10*HZ
+ jiffies
;
1917 bnx2i_ep
->ofld_timer
.function
= bnx2i_ep_ofld_timer
;
1918 bnx2i_ep
->ofld_timer
.data
= (unsigned long) bnx2i_ep
;
1919 add_timer(&bnx2i_ep
->ofld_timer
);
1921 if (test_bit(BNX2I_CNIC_REGISTERED
, &hba
->reg_with_cnic
)) {
1925 spin_lock_bh(&session
->lock
);
1926 if (session
->state
== ISCSI_STATE_LOGGING_OUT
)
1928 spin_unlock_bh(&session
->lock
);
1931 cnic
->cm_close(bnx2i_ep
->cm_sk
);
1933 cnic
->cm_abort(bnx2i_ep
->cm_sk
);
1937 /* wait for option-2 conn teardown */
1938 wait_event_interruptible(bnx2i_ep
->ofld_wait
,
1939 bnx2i_ep
->state
!= EP_STATE_DISCONN_START
);
1941 if (signal_pending(current
))
1942 flush_signals(current
);
1943 del_timer_sync(&bnx2i_ep
->ofld_timer
);
1946 if (bnx2i_tear_down_conn(hba
, bnx2i_ep
)) {
1947 mutex_unlock(&hba
->net_dev_lock
);
1951 mutex_unlock(&hba
->net_dev_lock
);
1952 bnx2i_free_qp_resc(hba
, bnx2i_ep
);
1955 bnx2i_conn
->ep
= NULL
;
1959 if (!hba
->ofld_conns_active
)
1960 bnx2i_unreg_dev_all();
1965 * bnx2i_nl_set_path - ISCSI_UEVENT_PATH_UPDATE user message handler
1966 * @buf: pointer to buffer containing iscsi path message
1969 static int bnx2i_nl_set_path(struct Scsi_Host
*shost
, struct iscsi_path
*params
)
1971 struct bnx2i_hba
*hba
= iscsi_host_priv(shost
);
1972 char *buf
= (char *) params
;
1973 u16 len
= sizeof(*params
);
1975 /* handled by cnic driver */
1976 hba
->cnic
->iscsi_nl_msg_recv(hba
->cnic
, ISCSI_UEVENT_PATH_UPDATE
, buf
,
1984 * 'Scsi_Host_Template' structure and 'iscsi_tranport' structure template
1985 * used while registering with the scsi host and iSCSI transport module.
1987 static struct scsi_host_template bnx2i_host_template
= {
1988 .module
= THIS_MODULE
,
1989 .name
= "Broadcom Offload iSCSI Initiator",
1990 .proc_name
= "bnx2i",
1991 .queuecommand
= iscsi_queuecommand
,
1992 .eh_abort_handler
= iscsi_eh_abort
,
1993 .eh_device_reset_handler
= iscsi_eh_device_reset
,
1994 .eh_target_reset_handler
= iscsi_eh_target_reset
,
1999 .use_clustering
= ENABLE_CLUSTERING
,
2000 .sg_tablesize
= ISCSI_MAX_BDS_PER_CMD
,
2001 .shost_attrs
= bnx2i_dev_attributes
,
2004 struct iscsi_transport bnx2i_iscsi_transport
= {
2005 .owner
= THIS_MODULE
,
2007 .caps
= CAP_RECOVERY_L0
| CAP_HDRDGST
|
2008 CAP_MULTI_R2T
| CAP_DATADGST
|
2009 CAP_DATA_PATH_OFFLOAD
,
2010 .param_mask
= ISCSI_MAX_RECV_DLENGTH
|
2011 ISCSI_MAX_XMIT_DLENGTH
|
2014 ISCSI_INITIAL_R2T_EN
|
2019 ISCSI_PDU_INORDER_EN
|
2020 ISCSI_DATASEQ_INORDER_EN
|
2023 ISCSI_CONN_ADDRESS
|
2025 ISCSI_PERSISTENT_PORT
|
2026 ISCSI_PERSISTENT_ADDRESS
|
2027 ISCSI_TARGET_NAME
| ISCSI_TPGT
|
2028 ISCSI_USERNAME
| ISCSI_PASSWORD
|
2029 ISCSI_USERNAME_IN
| ISCSI_PASSWORD_IN
|
2030 ISCSI_FAST_ABORT
| ISCSI_ABORT_TMO
|
2031 ISCSI_LU_RESET_TMO
| ISCSI_TGT_RESET_TMO
|
2032 ISCSI_PING_TMO
| ISCSI_RECV_TMO
|
2033 ISCSI_IFACE_NAME
| ISCSI_INITIATOR_NAME
,
2034 .host_param_mask
= ISCSI_HOST_HWADDRESS
| ISCSI_HOST_NETDEV_NAME
,
2035 .create_session
= bnx2i_session_create
,
2036 .destroy_session
= bnx2i_session_destroy
,
2037 .create_conn
= bnx2i_conn_create
,
2038 .bind_conn
= bnx2i_conn_bind
,
2039 .destroy_conn
= bnx2i_conn_destroy
,
2040 .set_param
= iscsi_set_param
,
2041 .get_conn_param
= bnx2i_conn_get_param
,
2042 .get_session_param
= iscsi_session_get_param
,
2043 .get_host_param
= bnx2i_host_get_param
,
2044 .start_conn
= bnx2i_conn_start
,
2045 .stop_conn
= iscsi_conn_stop
,
2046 .send_pdu
= iscsi_conn_send_pdu
,
2047 .xmit_task
= bnx2i_task_xmit
,
2048 .get_stats
= bnx2i_conn_get_stats
,
2049 /* TCP connect - disconnect - option-2 interface calls */
2050 .ep_connect
= bnx2i_ep_connect
,
2051 .ep_poll
= bnx2i_ep_poll
,
2052 .ep_disconnect
= bnx2i_ep_disconnect
,
2053 .set_path
= bnx2i_nl_set_path
,
2054 /* Error recovery timeout call */
2055 .session_recovery_timedout
= iscsi_session_recovery_timedout
,
2056 .cleanup_task
= bnx2i_cleanup_task
,