2 * QLogic iSCSI Offload Driver
3 * Copyright (c) 2016 Cavium Inc.
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
10 #include <linux/blkdev.h>
11 #include <linux/etherdevice.h>
12 #include <linux/if_ether.h>
13 #include <linux/if_vlan.h>
14 #include <scsi/scsi_tcq.h>
17 #include "qedi_iscsi.h"
20 int qedi_recover_all_conns(struct qedi_ctx
*qedi
)
22 struct qedi_conn
*qedi_conn
;
25 for (i
= 0; i
< qedi
->max_active_conns
; i
++) {
26 qedi_conn
= qedi_get_conn_from_id(qedi
, i
);
30 qedi_start_conn_recovery(qedi
, qedi_conn
);
36 static int qedi_eh_host_reset(struct scsi_cmnd
*cmd
)
38 struct Scsi_Host
*shost
= cmd
->device
->host
;
39 struct qedi_ctx
*qedi
;
41 qedi
= iscsi_host_priv(shost
);
43 return qedi_recover_all_conns(qedi
);
46 struct scsi_host_template qedi_host_template
= {
47 .module
= THIS_MODULE
,
48 .name
= "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver",
49 .proc_name
= QEDI_MODULE_NAME
,
50 .queuecommand
= iscsi_queuecommand
,
51 .eh_timed_out
= iscsi_eh_cmd_timed_out
,
52 .eh_abort_handler
= iscsi_eh_abort
,
53 .eh_device_reset_handler
= iscsi_eh_device_reset
,
54 .eh_target_reset_handler
= iscsi_eh_recover_target
,
55 .eh_host_reset_handler
= qedi_eh_host_reset
,
56 .target_alloc
= iscsi_target_alloc
,
57 .change_queue_depth
= scsi_change_queue_depth
,
58 .can_queue
= QEDI_MAX_ISCSI_TASK
,
60 .sg_tablesize
= QEDI_ISCSI_MAX_BDS_PER_CMD
,
61 .max_sectors
= 0xffff,
63 .use_clustering
= ENABLE_CLUSTERING
,
64 .shost_attrs
= qedi_shost_attrs
,
67 static void qedi_conn_free_login_resources(struct qedi_ctx
*qedi
,
68 struct qedi_conn
*qedi_conn
)
70 if (qedi_conn
->gen_pdu
.resp_bd_tbl
) {
71 dma_free_coherent(&qedi
->pdev
->dev
, QEDI_PAGE_SIZE
,
72 qedi_conn
->gen_pdu
.resp_bd_tbl
,
73 qedi_conn
->gen_pdu
.resp_bd_dma
);
74 qedi_conn
->gen_pdu
.resp_bd_tbl
= NULL
;
77 if (qedi_conn
->gen_pdu
.req_bd_tbl
) {
78 dma_free_coherent(&qedi
->pdev
->dev
, QEDI_PAGE_SIZE
,
79 qedi_conn
->gen_pdu
.req_bd_tbl
,
80 qedi_conn
->gen_pdu
.req_bd_dma
);
81 qedi_conn
->gen_pdu
.req_bd_tbl
= NULL
;
84 if (qedi_conn
->gen_pdu
.resp_buf
) {
85 dma_free_coherent(&qedi
->pdev
->dev
,
86 ISCSI_DEF_MAX_RECV_SEG_LEN
,
87 qedi_conn
->gen_pdu
.resp_buf
,
88 qedi_conn
->gen_pdu
.resp_dma_addr
);
89 qedi_conn
->gen_pdu
.resp_buf
= NULL
;
92 if (qedi_conn
->gen_pdu
.req_buf
) {
93 dma_free_coherent(&qedi
->pdev
->dev
,
94 ISCSI_DEF_MAX_RECV_SEG_LEN
,
95 qedi_conn
->gen_pdu
.req_buf
,
96 qedi_conn
->gen_pdu
.req_dma_addr
);
97 qedi_conn
->gen_pdu
.req_buf
= NULL
;
101 static int qedi_conn_alloc_login_resources(struct qedi_ctx
*qedi
,
102 struct qedi_conn
*qedi_conn
)
104 qedi_conn
->gen_pdu
.req_buf
=
105 dma_alloc_coherent(&qedi
->pdev
->dev
,
106 ISCSI_DEF_MAX_RECV_SEG_LEN
,
107 &qedi_conn
->gen_pdu
.req_dma_addr
,
109 if (!qedi_conn
->gen_pdu
.req_buf
)
110 goto login_req_buf_failure
;
112 qedi_conn
->gen_pdu
.req_buf_size
= 0;
113 qedi_conn
->gen_pdu
.req_wr_ptr
= qedi_conn
->gen_pdu
.req_buf
;
115 qedi_conn
->gen_pdu
.resp_buf
=
116 dma_alloc_coherent(&qedi
->pdev
->dev
,
117 ISCSI_DEF_MAX_RECV_SEG_LEN
,
118 &qedi_conn
->gen_pdu
.resp_dma_addr
,
120 if (!qedi_conn
->gen_pdu
.resp_buf
)
121 goto login_resp_buf_failure
;
123 qedi_conn
->gen_pdu
.resp_buf_size
= ISCSI_DEF_MAX_RECV_SEG_LEN
;
124 qedi_conn
->gen_pdu
.resp_wr_ptr
= qedi_conn
->gen_pdu
.resp_buf
;
126 qedi_conn
->gen_pdu
.req_bd_tbl
=
127 dma_alloc_coherent(&qedi
->pdev
->dev
, QEDI_PAGE_SIZE
,
128 &qedi_conn
->gen_pdu
.req_bd_dma
, GFP_KERNEL
);
129 if (!qedi_conn
->gen_pdu
.req_bd_tbl
)
130 goto login_req_bd_tbl_failure
;
132 qedi_conn
->gen_pdu
.resp_bd_tbl
=
133 dma_alloc_coherent(&qedi
->pdev
->dev
, QEDI_PAGE_SIZE
,
134 &qedi_conn
->gen_pdu
.resp_bd_dma
,
136 if (!qedi_conn
->gen_pdu
.resp_bd_tbl
)
137 goto login_resp_bd_tbl_failure
;
139 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_SESS
,
140 "Allocation successful, cid=0x%x\n",
141 qedi_conn
->iscsi_conn_id
);
144 login_resp_bd_tbl_failure
:
145 dma_free_coherent(&qedi
->pdev
->dev
, QEDI_PAGE_SIZE
,
146 qedi_conn
->gen_pdu
.req_bd_tbl
,
147 qedi_conn
->gen_pdu
.req_bd_dma
);
148 qedi_conn
->gen_pdu
.req_bd_tbl
= NULL
;
150 login_req_bd_tbl_failure
:
151 dma_free_coherent(&qedi
->pdev
->dev
, ISCSI_DEF_MAX_RECV_SEG_LEN
,
152 qedi_conn
->gen_pdu
.resp_buf
,
153 qedi_conn
->gen_pdu
.resp_dma_addr
);
154 qedi_conn
->gen_pdu
.resp_buf
= NULL
;
155 login_resp_buf_failure
:
156 dma_free_coherent(&qedi
->pdev
->dev
, ISCSI_DEF_MAX_RECV_SEG_LEN
,
157 qedi_conn
->gen_pdu
.req_buf
,
158 qedi_conn
->gen_pdu
.req_dma_addr
);
159 qedi_conn
->gen_pdu
.req_buf
= NULL
;
160 login_req_buf_failure
:
161 iscsi_conn_printk(KERN_ERR
, qedi_conn
->cls_conn
->dd_data
,
162 "login resource alloc failed!!\n");
166 static void qedi_destroy_cmd_pool(struct qedi_ctx
*qedi
,
167 struct iscsi_session
*session
)
171 for (i
= 0; i
< session
->cmds_max
; i
++) {
172 struct iscsi_task
*task
= session
->cmds
[i
];
173 struct qedi_cmd
*cmd
= task
->dd_data
;
175 if (cmd
->io_tbl
.sge_tbl
)
176 dma_free_coherent(&qedi
->pdev
->dev
,
177 QEDI_ISCSI_MAX_BDS_PER_CMD
*
178 sizeof(struct scsi_sge
),
180 cmd
->io_tbl
.sge_tbl_dma
);
182 if (cmd
->sense_buffer
)
183 dma_free_coherent(&qedi
->pdev
->dev
,
184 SCSI_SENSE_BUFFERSIZE
,
186 cmd
->sense_buffer_dma
);
190 static int qedi_alloc_sget(struct qedi_ctx
*qedi
, struct iscsi_session
*session
,
191 struct qedi_cmd
*cmd
)
193 struct qedi_io_bdt
*io
= &cmd
->io_tbl
;
194 struct scsi_sge
*sge
;
196 io
->sge_tbl
= dma_alloc_coherent(&qedi
->pdev
->dev
,
197 QEDI_ISCSI_MAX_BDS_PER_CMD
*
199 &io
->sge_tbl_dma
, GFP_KERNEL
);
201 iscsi_session_printk(KERN_ERR
, session
,
202 "Could not allocate BD table.\n");
210 static int qedi_setup_cmd_pool(struct qedi_ctx
*qedi
,
211 struct iscsi_session
*session
)
215 for (i
= 0; i
< session
->cmds_max
; i
++) {
216 struct iscsi_task
*task
= session
->cmds
[i
];
217 struct qedi_cmd
*cmd
= task
->dd_data
;
219 task
->hdr
= &cmd
->hdr
;
220 task
->hdr_max
= sizeof(struct iscsi_hdr
);
222 if (qedi_alloc_sget(qedi
, session
, cmd
))
225 cmd
->sense_buffer
= dma_alloc_coherent(&qedi
->pdev
->dev
,
226 SCSI_SENSE_BUFFERSIZE
,
227 &cmd
->sense_buffer_dma
,
229 if (!cmd
->sense_buffer
)
236 qedi_destroy_cmd_pool(qedi
, session
);
240 static struct iscsi_cls_session
*
241 qedi_session_create(struct iscsi_endpoint
*ep
, u16 cmds_max
,
242 u16 qdepth
, uint32_t initial_cmdsn
)
244 struct Scsi_Host
*shost
;
245 struct iscsi_cls_session
*cls_session
;
246 struct qedi_ctx
*qedi
;
247 struct qedi_endpoint
*qedi_ep
;
252 qedi_ep
= ep
->dd_data
;
253 shost
= qedi_ep
->qedi
->shost
;
254 qedi
= iscsi_host_priv(shost
);
256 if (cmds_max
> qedi
->max_sqes
)
257 cmds_max
= qedi
->max_sqes
;
258 else if (cmds_max
< QEDI_SQ_WQES_MIN
)
259 cmds_max
= QEDI_SQ_WQES_MIN
;
261 cls_session
= iscsi_session_setup(&qedi_iscsi_transport
, shost
,
262 cmds_max
, 0, sizeof(struct qedi_cmd
),
263 initial_cmdsn
, ISCSI_MAX_TARGET
);
265 QEDI_ERR(&qedi
->dbg_ctx
,
266 "Failed to setup session for ep=%p\n", qedi_ep
);
270 if (qedi_setup_cmd_pool(qedi
, cls_session
->dd_data
)) {
271 QEDI_ERR(&qedi
->dbg_ctx
,
272 "Failed to setup cmd pool for ep=%p\n", qedi_ep
);
273 goto session_teardown
;
279 iscsi_session_teardown(cls_session
);
283 static void qedi_session_destroy(struct iscsi_cls_session
*cls_session
)
285 struct iscsi_session
*session
= cls_session
->dd_data
;
286 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
287 struct qedi_ctx
*qedi
= iscsi_host_priv(shost
);
289 qedi_destroy_cmd_pool(qedi
, session
);
290 iscsi_session_teardown(cls_session
);
293 static struct iscsi_cls_conn
*
294 qedi_conn_create(struct iscsi_cls_session
*cls_session
, uint32_t cid
)
296 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
297 struct qedi_ctx
*qedi
= iscsi_host_priv(shost
);
298 struct iscsi_cls_conn
*cls_conn
;
299 struct qedi_conn
*qedi_conn
;
300 struct iscsi_conn
*conn
;
302 cls_conn
= iscsi_conn_setup(cls_session
, sizeof(*qedi_conn
),
305 QEDI_ERR(&qedi
->dbg_ctx
,
306 "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n",
311 conn
= cls_conn
->dd_data
;
312 qedi_conn
= conn
->dd_data
;
313 qedi_conn
->cls_conn
= cls_conn
;
314 qedi_conn
->qedi
= qedi
;
315 qedi_conn
->ep
= NULL
;
316 qedi_conn
->active_cmd_count
= 0;
317 INIT_LIST_HEAD(&qedi_conn
->active_cmd_list
);
318 spin_lock_init(&qedi_conn
->list_lock
);
320 if (qedi_conn_alloc_login_resources(qedi
, qedi_conn
)) {
321 iscsi_conn_printk(KERN_ALERT
, conn
,
322 "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n",
330 iscsi_conn_teardown(cls_conn
);
334 void qedi_mark_device_missing(struct iscsi_cls_session
*cls_session
)
336 iscsi_block_session(cls_session
);
339 void qedi_mark_device_available(struct iscsi_cls_session
*cls_session
)
341 iscsi_unblock_session(cls_session
);
344 static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx
*qedi
,
345 struct qedi_conn
*qedi_conn
)
347 u32 iscsi_cid
= qedi_conn
->iscsi_conn_id
;
349 if (qedi
->cid_que
.conn_cid_tbl
[iscsi_cid
]) {
350 iscsi_conn_printk(KERN_ALERT
, qedi_conn
->cls_conn
->dd_data
,
351 "conn bind - entry #%d not free\n",
356 qedi
->cid_que
.conn_cid_tbl
[iscsi_cid
] = qedi_conn
;
360 struct qedi_conn
*qedi_get_conn_from_id(struct qedi_ctx
*qedi
, u32 iscsi_cid
)
362 if (!qedi
->cid_que
.conn_cid_tbl
) {
363 QEDI_ERR(&qedi
->dbg_ctx
, "missing conn<->cid table\n");
366 } else if (iscsi_cid
>= qedi
->max_active_conns
) {
367 QEDI_ERR(&qedi
->dbg_ctx
, "wrong cid #%d\n", iscsi_cid
);
370 return qedi
->cid_que
.conn_cid_tbl
[iscsi_cid
];
373 static int qedi_conn_bind(struct iscsi_cls_session
*cls_session
,
374 struct iscsi_cls_conn
*cls_conn
,
375 u64 transport_fd
, int is_leading
)
377 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
378 struct qedi_conn
*qedi_conn
= conn
->dd_data
;
379 struct Scsi_Host
*shost
= iscsi_session_to_shost(cls_session
);
380 struct qedi_ctx
*qedi
= iscsi_host_priv(shost
);
381 struct qedi_endpoint
*qedi_ep
;
382 struct iscsi_endpoint
*ep
;
384 ep
= iscsi_lookup_endpoint(transport_fd
);
388 qedi_ep
= ep
->dd_data
;
389 if ((qedi_ep
->state
== EP_STATE_TCP_FIN_RCVD
) ||
390 (qedi_ep
->state
== EP_STATE_TCP_RST_RCVD
))
393 if (iscsi_conn_bind(cls_session
, cls_conn
, is_leading
))
396 qedi_ep
->conn
= qedi_conn
;
397 qedi_conn
->ep
= qedi_ep
;
398 qedi_conn
->iscsi_conn_id
= qedi_ep
->iscsi_cid
;
399 qedi_conn
->fw_cid
= qedi_ep
->fw_cid
;
400 qedi_conn
->cmd_cleanup_req
= 0;
401 qedi_conn
->cmd_cleanup_cmpl
= 0;
403 if (qedi_bind_conn_to_iscsi_cid(qedi
, qedi_conn
))
406 spin_lock_init(&qedi_conn
->tmf_work_lock
);
407 INIT_LIST_HEAD(&qedi_conn
->tmf_work_list
);
408 init_waitqueue_head(&qedi_conn
->wait_queue
);
412 static int qedi_iscsi_update_conn(struct qedi_ctx
*qedi
,
413 struct qedi_conn
*qedi_conn
)
415 struct qed_iscsi_params_update
*conn_info
;
416 struct iscsi_cls_conn
*cls_conn
= qedi_conn
->cls_conn
;
417 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
418 struct qedi_endpoint
*qedi_ep
;
421 qedi_ep
= qedi_conn
->ep
;
423 conn_info
= kzalloc(sizeof(*conn_info
), GFP_KERNEL
);
425 QEDI_ERR(&qedi
->dbg_ctx
, "memory alloc failed\n");
429 conn_info
->update_flag
= 0;
431 if (conn
->hdrdgst_en
)
432 SET_FIELD(conn_info
->update_flag
,
433 ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN
, true);
434 if (conn
->datadgst_en
)
435 SET_FIELD(conn_info
->update_flag
,
436 ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN
, true);
437 if (conn
->session
->initial_r2t_en
)
438 SET_FIELD(conn_info
->update_flag
,
439 ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T
,
441 if (conn
->session
->imm_data_en
)
442 SET_FIELD(conn_info
->update_flag
,
443 ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA
,
446 conn_info
->max_seq_size
= conn
->session
->max_burst
;
447 conn_info
->max_recv_pdu_length
= conn
->max_recv_dlength
;
448 conn_info
->max_send_pdu_length
= conn
->max_xmit_dlength
;
449 conn_info
->first_seq_length
= conn
->session
->first_burst
;
450 conn_info
->exp_stat_sn
= conn
->exp_statsn
;
452 rval
= qedi_ops
->update_conn(qedi
->cdev
, qedi_ep
->handle
,
456 QEDI_ERR(&qedi
->dbg_ctx
, "Could not update connection\n");
463 static u16
qedi_calc_mss(u16 pmtu
, u8 is_ipv6
, u8 tcp_ts_en
, u8 vlan_en
)
466 u16 hdrs
= TCP_HDR_LEN
;
469 hdrs
+= IPV6_HDR_LEN
;
471 hdrs
+= IPV4_HDR_LEN
;
479 mss
-= TCP_OPTION_LEN
;
487 static int qedi_iscsi_offload_conn(struct qedi_endpoint
*qedi_ep
)
489 struct qedi_ctx
*qedi
= qedi_ep
->qedi
;
490 struct qed_iscsi_params_offload
*conn_info
;
494 conn_info
= kzalloc(sizeof(*conn_info
), GFP_KERNEL
);
496 QEDI_ERR(&qedi
->dbg_ctx
,
497 "Failed to allocate memory ep=%p\n", qedi_ep
);
501 ether_addr_copy(conn_info
->src
.mac
, qedi_ep
->src_mac
);
502 ether_addr_copy(conn_info
->dst
.mac
, qedi_ep
->dst_mac
);
504 conn_info
->src
.ip
[0] = ntohl(qedi_ep
->src_addr
[0]);
505 conn_info
->dst
.ip
[0] = ntohl(qedi_ep
->dst_addr
[0]);
507 if (qedi_ep
->ip_type
== TCP_IPV4
) {
508 conn_info
->ip_version
= 0;
509 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
510 "After ntohl: src_addr=%pI4, dst_addr=%pI4\n",
511 qedi_ep
->src_addr
, qedi_ep
->dst_addr
);
513 for (i
= 1; i
< 4; i
++) {
514 conn_info
->src
.ip
[i
] = ntohl(qedi_ep
->src_addr
[i
]);
515 conn_info
->dst
.ip
[i
] = ntohl(qedi_ep
->dst_addr
[i
]);
518 conn_info
->ip_version
= 1;
519 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
520 "After ntohl: src_addr=%pI6, dst_addr=%pI6\n",
521 qedi_ep
->src_addr
, qedi_ep
->dst_addr
);
524 conn_info
->src
.port
= qedi_ep
->src_port
;
525 conn_info
->dst
.port
= qedi_ep
->dst_port
;
527 conn_info
->layer_code
= ISCSI_SLOW_PATH_LAYER_CODE
;
528 conn_info
->sq_pbl_addr
= qedi_ep
->sq_pbl_dma
;
529 conn_info
->vlan_id
= qedi_ep
->vlan_id
;
531 SET_FIELD(conn_info
->tcp_flags
, TCP_OFFLOAD_PARAMS_TS_EN
, 1);
532 SET_FIELD(conn_info
->tcp_flags
, TCP_OFFLOAD_PARAMS_DA_EN
, 1);
533 SET_FIELD(conn_info
->tcp_flags
, TCP_OFFLOAD_PARAMS_DA_CNT_EN
, 1);
534 SET_FIELD(conn_info
->tcp_flags
, TCP_OFFLOAD_PARAMS_KA_EN
, 1);
536 conn_info
->default_cq
= (qedi_ep
->fw_cid
% 8);
538 conn_info
->ka_max_probe_cnt
= DEF_KA_MAX_PROBE_COUNT
;
539 conn_info
->dup_ack_theshold
= 3;
540 conn_info
->rcv_wnd
= 65535;
541 conn_info
->cwnd
= DEF_MAX_CWND
;
543 conn_info
->ss_thresh
= 65535;
544 conn_info
->srtt
= 300;
545 conn_info
->rtt_var
= 150;
546 conn_info
->flow_label
= 0;
547 conn_info
->ka_timeout
= DEF_KA_TIMEOUT
;
548 conn_info
->ka_interval
= DEF_KA_INTERVAL
;
549 conn_info
->max_rt_time
= DEF_MAX_RT_TIME
;
550 conn_info
->ttl
= DEF_TTL
;
551 conn_info
->tos_or_tc
= DEF_TOS
;
552 conn_info
->remote_port
= qedi_ep
->dst_port
;
553 conn_info
->local_port
= qedi_ep
->src_port
;
555 conn_info
->mss
= qedi_calc_mss(qedi_ep
->pmtu
,
556 (qedi_ep
->ip_type
== TCP_IPV6
),
557 1, (qedi_ep
->vlan_id
!= 0));
559 conn_info
->rcv_wnd_scale
= 4;
560 conn_info
->ts_ticks_per_second
= 1000;
561 conn_info
->da_timeout_value
= 200;
562 conn_info
->ack_frequency
= 2;
564 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_INFO
,
565 "Default cq index [%d], mss [%d]\n",
566 conn_info
->default_cq
, conn_info
->mss
);
568 rval
= qedi_ops
->offload_conn(qedi
->cdev
, qedi_ep
->handle
, conn_info
);
570 QEDI_ERR(&qedi
->dbg_ctx
, "offload_conn returned %d, ep=%p\n",
577 static int qedi_conn_start(struct iscsi_cls_conn
*cls_conn
)
579 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
580 struct qedi_conn
*qedi_conn
= conn
->dd_data
;
581 struct qedi_ctx
*qedi
;
584 qedi
= qedi_conn
->qedi
;
586 rval
= qedi_iscsi_update_conn(qedi
, qedi_conn
);
588 iscsi_conn_printk(KERN_ALERT
, conn
,
589 "conn_start: FW oflload conn failed.\n");
594 clear_bit(QEDI_CONN_FW_CLEANUP
, &qedi_conn
->flags
);
595 qedi_conn
->abrt_conn
= 0;
597 rval
= iscsi_conn_start(cls_conn
);
599 iscsi_conn_printk(KERN_ALERT
, conn
,
600 "iscsi_conn_start: FW oflload conn failed!!\n");
607 static void qedi_conn_destroy(struct iscsi_cls_conn
*cls_conn
)
609 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
610 struct qedi_conn
*qedi_conn
= conn
->dd_data
;
611 struct Scsi_Host
*shost
;
612 struct qedi_ctx
*qedi
;
614 shost
= iscsi_session_to_shost(iscsi_conn_to_session(cls_conn
));
615 qedi
= iscsi_host_priv(shost
);
617 qedi_conn_free_login_resources(qedi
, qedi_conn
);
618 iscsi_conn_teardown(cls_conn
);
621 static int qedi_ep_get_param(struct iscsi_endpoint
*ep
,
622 enum iscsi_param param
, char *buf
)
624 struct qedi_endpoint
*qedi_ep
= ep
->dd_data
;
631 case ISCSI_PARAM_CONN_PORT
:
632 len
= sprintf(buf
, "%hu\n", qedi_ep
->dst_port
);
634 case ISCSI_PARAM_CONN_ADDRESS
:
635 if (qedi_ep
->ip_type
== TCP_IPV4
)
636 len
= sprintf(buf
, "%pI4\n", qedi_ep
->dst_addr
);
638 len
= sprintf(buf
, "%pI6\n", qedi_ep
->dst_addr
);
647 static int qedi_host_get_param(struct Scsi_Host
*shost
,
648 enum iscsi_host_param param
, char *buf
)
650 struct qedi_ctx
*qedi
;
653 qedi
= iscsi_host_priv(shost
);
656 case ISCSI_HOST_PARAM_HWADDRESS
:
657 len
= sysfs_format_mac(buf
, qedi
->mac
, 6);
659 case ISCSI_HOST_PARAM_NETDEV_NAME
:
660 len
= sprintf(buf
, "host%d\n", shost
->host_no
);
662 case ISCSI_HOST_PARAM_IPADDRESS
:
663 if (qedi
->ip_type
== TCP_IPV4
)
664 len
= sprintf(buf
, "%pI4\n", qedi
->src_ip
);
666 len
= sprintf(buf
, "%pI6\n", qedi
->src_ip
);
669 return iscsi_host_get_param(shost
, param
, buf
);
675 static void qedi_conn_get_stats(struct iscsi_cls_conn
*cls_conn
,
676 struct iscsi_stats
*stats
)
678 struct iscsi_conn
*conn
= cls_conn
->dd_data
;
679 struct qed_iscsi_stats iscsi_stats
;
680 struct Scsi_Host
*shost
;
681 struct qedi_ctx
*qedi
;
683 shost
= iscsi_session_to_shost(iscsi_conn_to_session(cls_conn
));
684 qedi
= iscsi_host_priv(shost
);
685 qedi_ops
->get_stats(qedi
->cdev
, &iscsi_stats
);
687 conn
->txdata_octets
= iscsi_stats
.iscsi_tx_bytes_cnt
;
688 conn
->rxdata_octets
= iscsi_stats
.iscsi_rx_bytes_cnt
;
689 conn
->dataout_pdus_cnt
= (uint32_t)iscsi_stats
.iscsi_tx_data_pdu_cnt
;
690 conn
->datain_pdus_cnt
= (uint32_t)iscsi_stats
.iscsi_rx_data_pdu_cnt
;
691 conn
->r2t_pdus_cnt
= (uint32_t)iscsi_stats
.iscsi_rx_r2t_pdu_cnt
;
693 stats
->txdata_octets
= conn
->txdata_octets
;
694 stats
->rxdata_octets
= conn
->rxdata_octets
;
695 stats
->scsicmd_pdus
= conn
->scsicmd_pdus_cnt
;
696 stats
->dataout_pdus
= conn
->dataout_pdus_cnt
;
697 stats
->scsirsp_pdus
= conn
->scsirsp_pdus_cnt
;
698 stats
->datain_pdus
= conn
->datain_pdus_cnt
;
699 stats
->r2t_pdus
= conn
->r2t_pdus_cnt
;
700 stats
->tmfcmd_pdus
= conn
->tmfcmd_pdus_cnt
;
701 stats
->tmfrsp_pdus
= conn
->tmfrsp_pdus_cnt
;
702 stats
->digest_err
= 0;
703 stats
->timeout_err
= 0;
704 strcpy(stats
->custom
[0].desc
, "eh_abort_cnt");
705 stats
->custom
[0].value
= conn
->eh_abort_cnt
;
706 stats
->custom_length
= 1;
709 static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn
*qedi_conn
)
711 struct scsi_sge
*bd_tbl
;
713 bd_tbl
= (struct scsi_sge
*)qedi_conn
->gen_pdu
.req_bd_tbl
;
715 bd_tbl
->sge_addr
.hi
=
716 (u32
)((u64
)qedi_conn
->gen_pdu
.req_dma_addr
>> 32);
717 bd_tbl
->sge_addr
.lo
= (u32
)qedi_conn
->gen_pdu
.req_dma_addr
;
718 bd_tbl
->sge_len
= qedi_conn
->gen_pdu
.req_wr_ptr
-
719 qedi_conn
->gen_pdu
.req_buf
;
720 bd_tbl
= (struct scsi_sge
*)qedi_conn
->gen_pdu
.resp_bd_tbl
;
721 bd_tbl
->sge_addr
.hi
=
722 (u32
)((u64
)qedi_conn
->gen_pdu
.resp_dma_addr
>> 32);
723 bd_tbl
->sge_addr
.lo
= (u32
)qedi_conn
->gen_pdu
.resp_dma_addr
;
724 bd_tbl
->sge_len
= ISCSI_DEF_MAX_RECV_SEG_LEN
;
727 static int qedi_iscsi_send_generic_request(struct iscsi_task
*task
)
729 struct qedi_cmd
*cmd
= task
->dd_data
;
730 struct qedi_conn
*qedi_conn
= cmd
->conn
;
735 qedi_iscsi_prep_generic_pdu_bd(qedi_conn
);
736 switch (task
->hdr
->opcode
& ISCSI_OPCODE_MASK
) {
738 qedi_send_iscsi_login(qedi_conn
, task
);
740 case ISCSI_OP_NOOP_OUT
:
741 data_len
= qedi_conn
->gen_pdu
.req_buf_size
;
742 buf
= qedi_conn
->gen_pdu
.req_buf
;
744 rc
= qedi_send_iscsi_nopout(qedi_conn
, task
,
747 rc
= qedi_send_iscsi_nopout(qedi_conn
, task
,
750 case ISCSI_OP_LOGOUT
:
751 rc
= qedi_send_iscsi_logout(qedi_conn
, task
);
753 case ISCSI_OP_SCSI_TMFUNC
:
754 rc
= qedi_iscsi_abort_work(qedi_conn
, task
);
757 rc
= qedi_send_iscsi_text(qedi_conn
, task
);
760 iscsi_conn_printk(KERN_ALERT
, qedi_conn
->cls_conn
->dd_data
,
761 "unsupported op 0x%x\n", task
->hdr
->opcode
);
767 static int qedi_mtask_xmit(struct iscsi_conn
*conn
, struct iscsi_task
*task
)
769 struct qedi_conn
*qedi_conn
= conn
->dd_data
;
770 struct qedi_cmd
*cmd
= task
->dd_data
;
772 memset(qedi_conn
->gen_pdu
.req_buf
, 0, ISCSI_DEF_MAX_RECV_SEG_LEN
);
774 qedi_conn
->gen_pdu
.req_buf_size
= task
->data_count
;
776 if (task
->data_count
) {
777 memcpy(qedi_conn
->gen_pdu
.req_buf
, task
->data
,
779 qedi_conn
->gen_pdu
.req_wr_ptr
=
780 qedi_conn
->gen_pdu
.req_buf
+ task
->data_count
;
783 cmd
->conn
= conn
->dd_data
;
784 cmd
->scsi_cmd
= NULL
;
785 return qedi_iscsi_send_generic_request(task
);
788 static int qedi_task_xmit(struct iscsi_task
*task
)
790 struct iscsi_conn
*conn
= task
->conn
;
791 struct qedi_conn
*qedi_conn
= conn
->dd_data
;
792 struct qedi_cmd
*cmd
= task
->dd_data
;
793 struct scsi_cmnd
*sc
= task
->sc
;
797 cmd
->use_slowpath
= false;
798 cmd
->conn
= qedi_conn
;
800 cmd
->io_cmd_in_list
= false;
801 INIT_LIST_HEAD(&cmd
->io_cmd
);
804 return qedi_mtask_xmit(conn
, task
);
807 return qedi_iscsi_send_ioreq(task
);
810 static struct iscsi_endpoint
*
811 qedi_ep_connect(struct Scsi_Host
*shost
, struct sockaddr
*dst_addr
,
814 struct qedi_ctx
*qedi
;
815 struct iscsi_endpoint
*ep
;
816 struct qedi_endpoint
*qedi_ep
;
817 struct sockaddr_in
*addr
;
818 struct sockaddr_in6
*addr6
;
819 struct qed_dev
*cdev
= NULL
;
820 struct qedi_uio_dev
*udev
= NULL
;
821 struct iscsi_path path_req
;
822 u32 msg_type
= ISCSI_KEVENT_IF_DOWN
;
823 u32 iscsi_cid
= QEDI_CID_RESERVED
;
830 QEDI_ERR(NULL
, "shost is NULL\n");
834 if (qedi_do_not_recover
) {
839 qedi
= iscsi_host_priv(shost
);
843 if (test_bit(QEDI_IN_OFFLINE
, &qedi
->flags
) ||
844 test_bit(QEDI_IN_RECOVERY
, &qedi
->flags
)) {
849 ep
= iscsi_create_endpoint(sizeof(struct qedi_endpoint
));
851 QEDI_ERR(&qedi
->dbg_ctx
, "endpoint create fail\n");
855 qedi_ep
= ep
->dd_data
;
856 memset(qedi_ep
, 0, sizeof(struct qedi_endpoint
));
857 qedi_ep
->state
= EP_STATE_IDLE
;
858 qedi_ep
->iscsi_cid
= (u32
)-1;
859 qedi_ep
->qedi
= qedi
;
861 if (dst_addr
->sa_family
== AF_INET
) {
862 addr
= (struct sockaddr_in
*)dst_addr
;
863 memcpy(qedi_ep
->dst_addr
, &addr
->sin_addr
.s_addr
,
864 sizeof(struct in_addr
));
865 qedi_ep
->dst_port
= ntohs(addr
->sin_port
);
866 qedi_ep
->ip_type
= TCP_IPV4
;
867 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
868 "dst_addr=%pI4, dst_port=%u\n",
869 qedi_ep
->dst_addr
, qedi_ep
->dst_port
);
870 } else if (dst_addr
->sa_family
== AF_INET6
) {
871 addr6
= (struct sockaddr_in6
*)dst_addr
;
872 memcpy(qedi_ep
->dst_addr
, &addr6
->sin6_addr
,
873 sizeof(struct in6_addr
));
874 qedi_ep
->dst_port
= ntohs(addr6
->sin6_port
);
875 qedi_ep
->ip_type
= TCP_IPV6
;
876 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
877 "dst_addr=%pI6, dst_port=%u\n",
878 qedi_ep
->dst_addr
, qedi_ep
->dst_port
);
880 QEDI_ERR(&qedi
->dbg_ctx
, "Invalid endpoint\n");
883 if (atomic_read(&qedi
->link_state
) != QEDI_LINK_UP
) {
884 QEDI_WARN(&qedi
->dbg_ctx
, "qedi link down\n");
889 ret
= qedi_alloc_sq(qedi
, qedi_ep
);
893 ret
= qedi_ops
->acquire_conn(qedi
->cdev
, &qedi_ep
->handle
,
894 &qedi_ep
->fw_cid
, &qedi_ep
->p_doorbell
);
897 QEDI_ERR(&qedi
->dbg_ctx
, "Could not acquire connection\n");
902 iscsi_cid
= qedi_ep
->handle
;
903 qedi_ep
->iscsi_cid
= iscsi_cid
;
905 init_waitqueue_head(&qedi_ep
->ofld_wait
);
906 init_waitqueue_head(&qedi_ep
->tcp_ofld_wait
);
907 qedi_ep
->state
= EP_STATE_OFLDCONN_START
;
908 qedi
->ep_tbl
[iscsi_cid
] = qedi_ep
;
910 buf
= (char *)&path_req
;
911 len
= sizeof(path_req
);
912 memset(&path_req
, 0, len
);
914 msg_type
= ISCSI_KEVENT_PATH_REQ
;
915 path_req
.handle
= (u64
)qedi_ep
->iscsi_cid
;
916 path_req
.pmtu
= qedi
->ll2_mtu
;
917 qedi_ep
->pmtu
= qedi
->ll2_mtu
;
918 if (qedi_ep
->ip_type
== TCP_IPV4
) {
919 memcpy(&path_req
.dst
.v4_addr
, &qedi_ep
->dst_addr
,
920 sizeof(struct in_addr
));
921 path_req
.ip_addr_len
= 4;
923 memcpy(&path_req
.dst
.v6_addr
, &qedi_ep
->dst_addr
,
924 sizeof(struct in6_addr
));
925 path_req
.ip_addr_len
= 16;
928 ret
= iscsi_offload_mesg(shost
, &qedi_iscsi_transport
, msg_type
, buf
,
931 QEDI_ERR(&qedi
->dbg_ctx
,
932 "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n",
937 atomic_inc(&qedi
->num_offloads
);
941 qedi
->ep_tbl
[iscsi_cid
] = NULL
;
942 ret
= qedi_ops
->release_conn(qedi
->cdev
, qedi_ep
->handle
);
944 QEDI_WARN(&qedi
->dbg_ctx
, "release_conn returned %d\n",
947 qedi_free_sq(qedi
, qedi_ep
);
949 iscsi_destroy_endpoint(ep
);
953 static int qedi_ep_poll(struct iscsi_endpoint
*ep
, int timeout_ms
)
955 struct qedi_endpoint
*qedi_ep
;
958 if (qedi_do_not_recover
)
961 qedi_ep
= ep
->dd_data
;
962 if (qedi_ep
->state
== EP_STATE_IDLE
||
963 qedi_ep
->state
== EP_STATE_OFLDCONN_FAILED
)
966 if (qedi_ep
->state
== EP_STATE_OFLDCONN_COMPL
)
969 ret
= wait_event_interruptible_timeout(qedi_ep
->ofld_wait
,
970 QEDI_OFLD_WAIT_STATE(qedi_ep
),
971 msecs_to_jiffies(timeout_ms
));
973 if (qedi_ep
->state
== EP_STATE_OFLDCONN_FAILED
)
984 static void qedi_cleanup_active_cmd_list(struct qedi_conn
*qedi_conn
)
986 struct qedi_cmd
*cmd
, *cmd_tmp
;
988 list_for_each_entry_safe(cmd
, cmd_tmp
, &qedi_conn
->active_cmd_list
,
990 list_del_init(&cmd
->io_cmd
);
991 qedi_conn
->active_cmd_count
--;
995 static void qedi_ep_disconnect(struct iscsi_endpoint
*ep
)
997 struct qedi_endpoint
*qedi_ep
;
998 struct qedi_conn
*qedi_conn
= NULL
;
999 struct iscsi_conn
*conn
= NULL
;
1000 struct qedi_ctx
*qedi
;
1002 int wait_delay
= 20 * HZ
;
1006 qedi_ep
= ep
->dd_data
;
1007 qedi
= qedi_ep
->qedi
;
1009 flush_work(&qedi_ep
->offload_work
);
1011 if (qedi_ep
->conn
) {
1012 qedi_conn
= qedi_ep
->conn
;
1013 conn
= qedi_conn
->cls_conn
->dd_data
;
1014 iscsi_suspend_queue(conn
);
1015 abrt_conn
= qedi_conn
->abrt_conn
;
1018 if (!test_bit(QEDI_CONN_FW_CLEANUP
,
1019 &qedi_conn
->flags
)) {
1025 if (test_bit(QEDI_IN_RECOVERY
, &qedi
->flags
)) {
1026 if (qedi_do_not_recover
) {
1027 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_INFO
,
1028 "Do not recover cid=0x%x\n",
1029 qedi_ep
->iscsi_cid
);
1030 goto ep_exit_recover
;
1032 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_INFO
,
1033 "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n",
1034 qedi_ep
->iscsi_cid
, qedi_ep
, qedi_ep
->state
);
1035 qedi_cleanup_active_cmd_list(qedi_conn
);
1036 goto ep_release_conn
;
1040 if (qedi_do_not_recover
)
1041 goto ep_exit_recover
;
1043 switch (qedi_ep
->state
) {
1044 case EP_STATE_OFLDCONN_START
:
1045 goto ep_release_conn
;
1046 case EP_STATE_OFLDCONN_FAILED
:
1048 case EP_STATE_OFLDCONN_COMPL
:
1049 if (unlikely(!qedi_conn
))
1052 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_INFO
,
1053 "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n",
1054 qedi_conn
->active_cmd_count
, abrt_conn
,
1060 if (!qedi_conn
->active_cmd_count
)
1066 qedi_clearsq(qedi
, qedi_conn
, NULL
);
1072 qedi_ep
->state
= EP_STATE_DISCONN_START
;
1073 ret
= qedi_ops
->destroy_conn(qedi
->cdev
, qedi_ep
->handle
, abrt_conn
);
1075 QEDI_WARN(&qedi
->dbg_ctx
,
1076 "destroy_conn failed returned %d\n", ret
);
1078 ret
= wait_event_interruptible_timeout(
1079 qedi_ep
->tcp_ofld_wait
,
1081 EP_STATE_DISCONN_START
),
1083 if ((ret
<= 0) || (qedi_ep
->state
== EP_STATE_DISCONN_START
)) {
1084 QEDI_WARN(&qedi
->dbg_ctx
,
1085 "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n",
1086 ret
, wait_delay
, qedi_ep
->iscsi_cid
);
1091 ret
= qedi_ops
->release_conn(qedi
->cdev
, qedi_ep
->handle
);
1093 QEDI_WARN(&qedi
->dbg_ctx
,
1094 "release_conn returned %d, cid=0x%x\n",
1095 ret
, qedi_ep
->iscsi_cid
);
1097 qedi_ep
->state
= EP_STATE_IDLE
;
1098 qedi
->ep_tbl
[qedi_ep
->iscsi_cid
] = NULL
;
1099 qedi
->cid_que
.conn_cid_tbl
[qedi_ep
->iscsi_cid
] = NULL
;
1100 qedi_free_id(&qedi
->lcl_port_tbl
, qedi_ep
->src_port
);
1101 qedi_free_sq(qedi
, qedi_ep
);
1104 qedi_conn
->ep
= NULL
;
1106 qedi_ep
->conn
= NULL
;
1107 qedi_ep
->qedi
= NULL
;
1108 atomic_dec(&qedi
->num_offloads
);
1110 iscsi_destroy_endpoint(ep
);
1113 static int qedi_data_avail(struct qedi_ctx
*qedi
, u16 vlanid
)
1115 struct qed_dev
*cdev
= qedi
->cdev
;
1116 struct qedi_uio_dev
*udev
;
1117 struct qedi_uio_ctrl
*uctrl
;
1118 struct sk_buff
*skb
;
1124 QEDI_ERR(&qedi
->dbg_ctx
, "udev is NULL.\n");
1128 uctrl
= (struct qedi_uio_ctrl
*)udev
->uctrl
;
1130 QEDI_ERR(&qedi
->dbg_ctx
, "uctlr is NULL.\n");
1134 len
= uctrl
->host_tx_pkt_len
;
1136 QEDI_ERR(&qedi
->dbg_ctx
, "Invalid len %u\n", len
);
1140 skb
= alloc_skb(len
, GFP_ATOMIC
);
1142 QEDI_ERR(&qedi
->dbg_ctx
, "alloc_skb failed\n");
1147 memcpy(skb
->data
, udev
->tx_pkt
, len
);
1148 skb
->ip_summed
= CHECKSUM_NONE
;
1151 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), vlanid
);
1153 rc
= qedi_ops
->ll2
->start_xmit(cdev
, skb
);
1155 QEDI_ERR(&qedi
->dbg_ctx
, "ll2 start_xmit returned %d\n",
1160 uctrl
->host_tx_pkt_len
= 0;
1161 uctrl
->hw_tx_cons
++;
1166 static void qedi_offload_work(struct work_struct
*work
)
1168 struct qedi_endpoint
*qedi_ep
=
1169 container_of(work
, struct qedi_endpoint
, offload_work
);
1170 struct qedi_ctx
*qedi
;
1171 int wait_delay
= 20 * HZ
;
1174 qedi
= qedi_ep
->qedi
;
1176 ret
= qedi_iscsi_offload_conn(qedi_ep
);
1178 QEDI_ERR(&qedi
->dbg_ctx
,
1179 "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
1180 qedi_ep
->iscsi_cid
, qedi_ep
, ret
);
1181 qedi_ep
->state
= EP_STATE_OFLDCONN_FAILED
;
1185 ret
= wait_event_interruptible_timeout(qedi_ep
->tcp_ofld_wait
,
1187 EP_STATE_OFLDCONN_COMPL
),
1189 if ((ret
<= 0) || (qedi_ep
->state
!= EP_STATE_OFLDCONN_COMPL
)) {
1190 qedi_ep
->state
= EP_STATE_OFLDCONN_FAILED
;
1191 QEDI_ERR(&qedi
->dbg_ctx
,
1192 "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
1193 qedi_ep
->iscsi_cid
, qedi_ep
);
1197 static int qedi_set_path(struct Scsi_Host
*shost
, struct iscsi_path
*path_data
)
1199 struct qedi_ctx
*qedi
;
1200 struct qedi_endpoint
*qedi_ep
;
1207 QEDI_ERR(NULL
, "shost is NULL\n");
1211 if (strcmp(shost
->hostt
->proc_name
, "qedi")) {
1213 QEDI_ERR(NULL
, "shost %s is invalid\n",
1214 shost
->hostt
->proc_name
);
1218 qedi
= iscsi_host_priv(shost
);
1219 if (path_data
->handle
== QEDI_PATH_HANDLE
) {
1220 ret
= qedi_data_avail(qedi
, path_data
->vlan_id
);
1224 iscsi_cid
= (u32
)path_data
->handle
;
1225 qedi_ep
= qedi
->ep_tbl
[iscsi_cid
];
1226 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
1227 "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid
, qedi_ep
);
1229 if (!is_valid_ether_addr(&path_data
->mac_addr
[0])) {
1230 QEDI_NOTICE(&qedi
->dbg_ctx
, "dst mac NOT VALID\n");
1235 ether_addr_copy(&qedi_ep
->src_mac
[0], &qedi
->mac
[0]);
1236 ether_addr_copy(&qedi_ep
->dst_mac
[0], &path_data
->mac_addr
[0]);
1238 qedi_ep
->vlan_id
= path_data
->vlan_id
;
1239 if (path_data
->pmtu
< DEF_PATH_MTU
) {
1240 qedi_ep
->pmtu
= qedi
->ll2_mtu
;
1241 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_INFO
,
1242 "MTU cannot be %u, using default MTU %u\n",
1243 path_data
->pmtu
, qedi_ep
->pmtu
);
1246 if (path_data
->pmtu
!= qedi
->ll2_mtu
) {
1247 if (path_data
->pmtu
> JUMBO_MTU
) {
1249 QEDI_ERR(NULL
, "Invalid MTU %u\n", path_data
->pmtu
);
1253 qedi_reset_host_mtu(qedi
, path_data
->pmtu
);
1254 qedi_ep
->pmtu
= qedi
->ll2_mtu
;
1257 port_id
= qedi_ep
->src_port
;
1258 if (port_id
>= QEDI_LOCAL_PORT_MIN
&&
1259 port_id
< QEDI_LOCAL_PORT_MAX
) {
1260 if (qedi_alloc_id(&qedi
->lcl_port_tbl
, port_id
))
1267 port_id
= qedi_alloc_new_id(&qedi
->lcl_port_tbl
);
1268 if (port_id
== QEDI_LOCAL_PORT_INVALID
) {
1269 QEDI_ERR(&qedi
->dbg_ctx
,
1270 "Failed to allocate port id for iscsi_cid=0x%x\n",
1277 qedi_ep
->src_port
= port_id
;
1279 if (qedi_ep
->ip_type
== TCP_IPV4
) {
1280 memcpy(&qedi_ep
->src_addr
[0], &path_data
->src
.v4_addr
,
1281 sizeof(struct in_addr
));
1282 memcpy(&qedi
->src_ip
[0], &path_data
->src
.v4_addr
,
1283 sizeof(struct in_addr
));
1284 qedi
->ip_type
= TCP_IPV4
;
1286 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
1287 "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n",
1288 qedi_ep
->src_addr
, qedi_ep
->src_port
,
1289 qedi_ep
->dst_addr
, qedi_ep
->dst_port
);
1291 memcpy(&qedi_ep
->src_addr
[0], &path_data
->src
.v6_addr
,
1292 sizeof(struct in6_addr
));
1293 memcpy(&qedi
->src_ip
[0], &path_data
->src
.v6_addr
,
1294 sizeof(struct in6_addr
));
1295 qedi
->ip_type
= TCP_IPV6
;
1297 QEDI_INFO(&qedi
->dbg_ctx
, QEDI_LOG_CONN
,
1298 "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n",
1299 qedi_ep
->src_addr
, qedi_ep
->src_port
,
1300 qedi_ep
->dst_addr
, qedi_ep
->dst_port
);
1303 INIT_WORK(&qedi_ep
->offload_work
, qedi_offload_work
);
1304 queue_work(qedi
->offload_thread
, &qedi_ep
->offload_work
);
1312 static umode_t
qedi_attr_is_visible(int param_type
, int param
)
1314 switch (param_type
) {
1315 case ISCSI_HOST_PARAM
:
1317 case ISCSI_HOST_PARAM_NETDEV_NAME
:
1318 case ISCSI_HOST_PARAM_HWADDRESS
:
1319 case ISCSI_HOST_PARAM_IPADDRESS
:
1326 case ISCSI_PARAM_MAX_RECV_DLENGTH
:
1327 case ISCSI_PARAM_MAX_XMIT_DLENGTH
:
1328 case ISCSI_PARAM_HDRDGST_EN
:
1329 case ISCSI_PARAM_DATADGST_EN
:
1330 case ISCSI_PARAM_CONN_ADDRESS
:
1331 case ISCSI_PARAM_CONN_PORT
:
1332 case ISCSI_PARAM_EXP_STATSN
:
1333 case ISCSI_PARAM_PERSISTENT_ADDRESS
:
1334 case ISCSI_PARAM_PERSISTENT_PORT
:
1335 case ISCSI_PARAM_PING_TMO
:
1336 case ISCSI_PARAM_RECV_TMO
:
1337 case ISCSI_PARAM_INITIAL_R2T_EN
:
1338 case ISCSI_PARAM_MAX_R2T
:
1339 case ISCSI_PARAM_IMM_DATA_EN
:
1340 case ISCSI_PARAM_FIRST_BURST
:
1341 case ISCSI_PARAM_MAX_BURST
:
1342 case ISCSI_PARAM_PDU_INORDER_EN
:
1343 case ISCSI_PARAM_DATASEQ_INORDER_EN
:
1344 case ISCSI_PARAM_ERL
:
1345 case ISCSI_PARAM_TARGET_NAME
:
1346 case ISCSI_PARAM_TPGT
:
1347 case ISCSI_PARAM_USERNAME
:
1348 case ISCSI_PARAM_PASSWORD
:
1349 case ISCSI_PARAM_USERNAME_IN
:
1350 case ISCSI_PARAM_PASSWORD_IN
:
1351 case ISCSI_PARAM_FAST_ABORT
:
1352 case ISCSI_PARAM_ABORT_TMO
:
1353 case ISCSI_PARAM_LU_RESET_TMO
:
1354 case ISCSI_PARAM_TGT_RESET_TMO
:
1355 case ISCSI_PARAM_IFACE_NAME
:
1356 case ISCSI_PARAM_INITIATOR_NAME
:
1357 case ISCSI_PARAM_BOOT_ROOT
:
1358 case ISCSI_PARAM_BOOT_NIC
:
1359 case ISCSI_PARAM_BOOT_TARGET
:
1369 static void qedi_cleanup_task(struct iscsi_task
*task
)
1371 if (!task
->sc
|| task
->state
== ISCSI_TASK_PENDING
) {
1372 QEDI_INFO(NULL
, QEDI_LOG_IO
, "Returning ref_cnt=%d\n",
1373 refcount_read(&task
->refcount
));
1377 qedi_iscsi_unmap_sg_list(task
->dd_data
);
1380 struct iscsi_transport qedi_iscsi_transport
= {
1381 .owner
= THIS_MODULE
,
1382 .name
= QEDI_MODULE_NAME
,
1383 .caps
= CAP_RECOVERY_L0
| CAP_HDRDGST
| CAP_MULTI_R2T
| CAP_DATADGST
|
1384 CAP_DATA_PATH_OFFLOAD
| CAP_TEXT_NEGO
,
1385 .create_session
= qedi_session_create
,
1386 .destroy_session
= qedi_session_destroy
,
1387 .create_conn
= qedi_conn_create
,
1388 .bind_conn
= qedi_conn_bind
,
1389 .start_conn
= qedi_conn_start
,
1390 .stop_conn
= iscsi_conn_stop
,
1391 .destroy_conn
= qedi_conn_destroy
,
1392 .set_param
= iscsi_set_param
,
1393 .get_ep_param
= qedi_ep_get_param
,
1394 .get_conn_param
= iscsi_conn_get_param
,
1395 .get_session_param
= iscsi_session_get_param
,
1396 .get_host_param
= qedi_host_get_param
,
1397 .send_pdu
= iscsi_conn_send_pdu
,
1398 .get_stats
= qedi_conn_get_stats
,
1399 .xmit_task
= qedi_task_xmit
,
1400 .cleanup_task
= qedi_cleanup_task
,
1401 .session_recovery_timedout
= iscsi_session_recovery_timedout
,
1402 .ep_connect
= qedi_ep_connect
,
1403 .ep_poll
= qedi_ep_poll
,
1404 .ep_disconnect
= qedi_ep_disconnect
,
1405 .set_path
= qedi_set_path
,
1406 .attr_is_visible
= qedi_attr_is_visible
,
1409 void qedi_start_conn_recovery(struct qedi_ctx
*qedi
,
1410 struct qedi_conn
*qedi_conn
)
1412 struct iscsi_cls_session
*cls_sess
;
1413 struct iscsi_cls_conn
*cls_conn
;
1414 struct iscsi_conn
*conn
;
1416 cls_conn
= qedi_conn
->cls_conn
;
1417 conn
= cls_conn
->dd_data
;
1418 cls_sess
= iscsi_conn_to_session(cls_conn
);
1420 if (iscsi_is_session_online(cls_sess
)) {
1421 qedi_conn
->abrt_conn
= 1;
1422 QEDI_ERR(&qedi
->dbg_ctx
,
1423 "Failing connection, state=0x%x, cid=0x%x\n",
1424 conn
->session
->state
, qedi_conn
->iscsi_conn_id
);
1425 iscsi_conn_failure(qedi_conn
->cls_conn
->dd_data
,
1426 ISCSI_ERR_CONN_FAILED
);
1430 static const struct {
1431 enum iscsi_error_types error_code
;
1433 } qedi_iscsi_error
[] = {
1434 { ISCSI_STATUS_NONE
,
1437 { ISCSI_CONN_ERROR_TASK_CID_MISMATCH
,
1440 { ISCSI_CONN_ERROR_TASK_NOT_VALID
,
1443 { ISCSI_CONN_ERROR_RQ_RING_IS_FULL
,
1446 { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL
,
1449 { ISCSI_CONN_ERROR_HQE_CACHING_FAILED
,
1450 "sge caching failed"
1452 { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR
,
1455 { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR
,
1458 { ISCSI_CONN_ERROR_DATA_OVERRUN
,
1461 { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR
,
1464 { ISCSI_CONN_ERROR_TCP_SEG_PROC_IP_OPTIONS_ERROR
,
1465 "tcp seg ip options error"
1467 { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR
,
1468 "tcp ip fragment error"
1470 { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN
,
1471 "AHS len protocol error"
1473 { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE
,
1474 "itt out of range error"
1476 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE
,
1477 "data seg more than pdu size"
1479 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE
,
1482 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE
,
1483 "invalid opcode before update"
1485 { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL
,
1488 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA
,
1489 "r2t carries no data"
1491 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN
,
1494 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT
,
1497 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT
,
1500 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET
,
1501 "buffer offset error"
1503 { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO
,
1506 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN
,
1509 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0
,
1510 "data xer len error"
1512 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1
,
1513 "data xer len1 error"
1515 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2
,
1516 "data xer len2 error"
1518 { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN
,
1519 "protocol lun error"
1521 { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO
,
1524 { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN
,
1527 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO
,
1528 "dsl not zero error"
1530 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL
,
1533 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG
,
1534 "data seg len too big"
1536 { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT
,
1537 "outstanding r2t count error"
1539 { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH
,
1540 "sense datalen error"
1544 char *qedi_get_iscsi_error(enum iscsi_error_types err_code
)
1549 for (i
= 0; i
< ARRAY_SIZE(qedi_iscsi_error
); i
++) {
1550 if (qedi_iscsi_error
[i
].error_code
== err_code
) {
1551 msg
= qedi_iscsi_error
[i
].err_string
;
1558 void qedi_process_iscsi_error(struct qedi_endpoint
*ep
, struct async_data
*data
)
1560 struct qedi_conn
*qedi_conn
;
1561 struct qedi_ctx
*qedi
;
1562 char warn_notice
[] = "iscsi_warning";
1563 char error_notice
[] = "iscsi_error";
1564 char unknown_msg
[] = "Unknown error";
1566 int need_recovery
= 0;
1573 qedi_conn
= ep
->conn
;
1579 QEDI_ERR(&qedi
->dbg_ctx
, "async event iscsi error:0x%x\n",
1584 message
= warn_notice
;
1587 message
= error_notice
;
1590 msg
= qedi_get_iscsi_error(data
->error_code
);
1596 iscsi_conn_printk(KERN_ALERT
,
1597 qedi_conn
->cls_conn
->dd_data
,
1598 "qedi: %s - %s\n", message
, msg
);
1601 qedi_start_conn_recovery(qedi_conn
->qedi
, qedi_conn
);
1604 void qedi_process_tcp_error(struct qedi_endpoint
*ep
, struct async_data
*data
)
1606 struct qedi_conn
*qedi_conn
;
1611 qedi_conn
= ep
->conn
;
1615 QEDI_ERR(&ep
->qedi
->dbg_ctx
, "async event TCP error:0x%x\n",
1618 qedi_start_conn_recovery(qedi_conn
->qedi
, qedi_conn
);