1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * QLogic iSCSI Offload Driver |
4 | * Copyright (c) 2016 Cavium Inc. |
5 | */ |
6 | |
7 | #include <linux/blkdev.h> |
8 | #include <linux/etherdevice.h> |
9 | #include <linux/if_ether.h> |
10 | #include <linux/if_vlan.h> |
11 | #include <scsi/scsi_tcq.h> |
12 | |
13 | #include "qedi.h" |
14 | #include "qedi_iscsi.h" |
15 | #include "qedi_gbl.h" |
16 | |
17 | int qedi_recover_all_conns(struct qedi_ctx *qedi) |
18 | { |
19 | struct qedi_conn *qedi_conn; |
20 | int i; |
21 | |
22 | for (i = 0; i < qedi->max_active_conns; i++) { |
23 | qedi_conn = qedi_get_conn_from_id(qedi, iscsi_cid: i); |
24 | if (!qedi_conn) |
25 | continue; |
26 | |
27 | qedi_start_conn_recovery(qedi, qedi_conn); |
28 | } |
29 | |
30 | return SUCCESS; |
31 | } |
32 | |
33 | static int qedi_eh_host_reset(struct scsi_cmnd *cmd) |
34 | { |
35 | struct Scsi_Host *shost = cmd->device->host; |
36 | struct qedi_ctx *qedi; |
37 | |
38 | qedi = iscsi_host_priv(shost); |
39 | |
40 | return qedi_recover_all_conns(qedi); |
41 | } |
42 | |
43 | const struct scsi_host_template qedi_host_template = { |
44 | .module = THIS_MODULE, |
45 | .name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver" , |
46 | .proc_name = QEDI_MODULE_NAME, |
47 | .queuecommand = iscsi_queuecommand, |
48 | .eh_timed_out = iscsi_eh_cmd_timed_out, |
49 | .eh_abort_handler = iscsi_eh_abort, |
50 | .eh_device_reset_handler = iscsi_eh_device_reset, |
51 | .eh_target_reset_handler = iscsi_eh_recover_target, |
52 | .eh_host_reset_handler = qedi_eh_host_reset, |
53 | .target_alloc = iscsi_target_alloc, |
54 | .change_queue_depth = scsi_change_queue_depth, |
55 | .can_queue = QEDI_MAX_ISCSI_TASK, |
56 | .this_id = -1, |
57 | .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD, |
58 | .max_sectors = 0xffff, |
59 | .dma_boundary = QEDI_HW_DMA_BOUNDARY, |
60 | .cmd_per_lun = 128, |
61 | .shost_groups = qedi_shost_groups, |
62 | .cmd_size = sizeof(struct iscsi_cmd), |
63 | }; |
64 | |
65 | static void qedi_conn_free_login_resources(struct qedi_ctx *qedi, |
66 | struct qedi_conn *qedi_conn) |
67 | { |
68 | if (qedi_conn->gen_pdu.resp_bd_tbl) { |
69 | dma_free_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
70 | cpu_addr: qedi_conn->gen_pdu.resp_bd_tbl, |
71 | dma_handle: qedi_conn->gen_pdu.resp_bd_dma); |
72 | qedi_conn->gen_pdu.resp_bd_tbl = NULL; |
73 | } |
74 | |
75 | if (qedi_conn->gen_pdu.req_bd_tbl) { |
76 | dma_free_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
77 | cpu_addr: qedi_conn->gen_pdu.req_bd_tbl, |
78 | dma_handle: qedi_conn->gen_pdu.req_bd_dma); |
79 | qedi_conn->gen_pdu.req_bd_tbl = NULL; |
80 | } |
81 | |
82 | if (qedi_conn->gen_pdu.resp_buf) { |
83 | dma_free_coherent(dev: &qedi->pdev->dev, |
84 | ISCSI_DEF_MAX_RECV_SEG_LEN, |
85 | cpu_addr: qedi_conn->gen_pdu.resp_buf, |
86 | dma_handle: qedi_conn->gen_pdu.resp_dma_addr); |
87 | qedi_conn->gen_pdu.resp_buf = NULL; |
88 | } |
89 | |
90 | if (qedi_conn->gen_pdu.req_buf) { |
91 | dma_free_coherent(dev: &qedi->pdev->dev, |
92 | ISCSI_DEF_MAX_RECV_SEG_LEN, |
93 | cpu_addr: qedi_conn->gen_pdu.req_buf, |
94 | dma_handle: qedi_conn->gen_pdu.req_dma_addr); |
95 | qedi_conn->gen_pdu.req_buf = NULL; |
96 | } |
97 | } |
98 | |
99 | static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi, |
100 | struct qedi_conn *qedi_conn) |
101 | { |
102 | qedi_conn->gen_pdu.req_buf = |
103 | dma_alloc_coherent(dev: &qedi->pdev->dev, |
104 | ISCSI_DEF_MAX_RECV_SEG_LEN, |
105 | dma_handle: &qedi_conn->gen_pdu.req_dma_addr, |
106 | GFP_KERNEL); |
107 | if (!qedi_conn->gen_pdu.req_buf) |
108 | goto login_req_buf_failure; |
109 | |
110 | qedi_conn->gen_pdu.req_buf_size = 0; |
111 | qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf; |
112 | |
113 | qedi_conn->gen_pdu.resp_buf = |
114 | dma_alloc_coherent(dev: &qedi->pdev->dev, |
115 | ISCSI_DEF_MAX_RECV_SEG_LEN, |
116 | dma_handle: &qedi_conn->gen_pdu.resp_dma_addr, |
117 | GFP_KERNEL); |
118 | if (!qedi_conn->gen_pdu.resp_buf) |
119 | goto login_resp_buf_failure; |
120 | |
121 | qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN; |
122 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf; |
123 | |
124 | qedi_conn->gen_pdu.req_bd_tbl = |
125 | dma_alloc_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
126 | dma_handle: &qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL); |
127 | if (!qedi_conn->gen_pdu.req_bd_tbl) |
128 | goto login_req_bd_tbl_failure; |
129 | |
130 | qedi_conn->gen_pdu.resp_bd_tbl = |
131 | dma_alloc_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
132 | dma_handle: &qedi_conn->gen_pdu.resp_bd_dma, |
133 | GFP_KERNEL); |
134 | if (!qedi_conn->gen_pdu.resp_bd_tbl) |
135 | goto login_resp_bd_tbl_failure; |
136 | |
137 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS, |
138 | "Allocation successful, cid=0x%x\n" , |
139 | qedi_conn->iscsi_conn_id); |
140 | return 0; |
141 | |
142 | login_resp_bd_tbl_failure: |
143 | dma_free_coherent(dev: &qedi->pdev->dev, QEDI_PAGE_SIZE, |
144 | cpu_addr: qedi_conn->gen_pdu.req_bd_tbl, |
145 | dma_handle: qedi_conn->gen_pdu.req_bd_dma); |
146 | qedi_conn->gen_pdu.req_bd_tbl = NULL; |
147 | |
148 | login_req_bd_tbl_failure: |
149 | dma_free_coherent(dev: &qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, |
150 | cpu_addr: qedi_conn->gen_pdu.resp_buf, |
151 | dma_handle: qedi_conn->gen_pdu.resp_dma_addr); |
152 | qedi_conn->gen_pdu.resp_buf = NULL; |
153 | login_resp_buf_failure: |
154 | dma_free_coherent(dev: &qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, |
155 | cpu_addr: qedi_conn->gen_pdu.req_buf, |
156 | dma_handle: qedi_conn->gen_pdu.req_dma_addr); |
157 | qedi_conn->gen_pdu.req_buf = NULL; |
158 | login_req_buf_failure: |
159 | iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data, |
160 | "login resource alloc failed!!\n" ); |
161 | return -ENOMEM; |
162 | } |
163 | |
164 | static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi, |
165 | struct iscsi_session *session) |
166 | { |
167 | int i; |
168 | |
169 | for (i = 0; i < session->cmds_max; i++) { |
170 | struct iscsi_task *task = session->cmds[i]; |
171 | struct qedi_cmd *cmd = task->dd_data; |
172 | |
173 | if (cmd->io_tbl.sge_tbl) |
174 | dma_free_coherent(dev: &qedi->pdev->dev, |
175 | QEDI_ISCSI_MAX_BDS_PER_CMD * |
176 | sizeof(struct scsi_sge), |
177 | cpu_addr: cmd->io_tbl.sge_tbl, |
178 | dma_handle: cmd->io_tbl.sge_tbl_dma); |
179 | |
180 | if (cmd->sense_buffer) |
181 | dma_free_coherent(dev: &qedi->pdev->dev, |
182 | SCSI_SENSE_BUFFERSIZE, |
183 | cpu_addr: cmd->sense_buffer, |
184 | dma_handle: cmd->sense_buffer_dma); |
185 | } |
186 | } |
187 | |
188 | static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session, |
189 | struct qedi_cmd *cmd) |
190 | { |
191 | struct qedi_io_bdt *io = &cmd->io_tbl; |
192 | struct scsi_sge *sge; |
193 | |
194 | io->sge_tbl = dma_alloc_coherent(dev: &qedi->pdev->dev, |
195 | QEDI_ISCSI_MAX_BDS_PER_CMD * |
196 | sizeof(*sge), |
197 | dma_handle: &io->sge_tbl_dma, GFP_KERNEL); |
198 | if (!io->sge_tbl) { |
199 | iscsi_session_printk(KERN_ERR, session, |
200 | "Could not allocate BD table.\n" ); |
201 | return -ENOMEM; |
202 | } |
203 | |
204 | io->sge_valid = 0; |
205 | return 0; |
206 | } |
207 | |
208 | static int qedi_setup_cmd_pool(struct qedi_ctx *qedi, |
209 | struct iscsi_session *session) |
210 | { |
211 | int i; |
212 | |
213 | for (i = 0; i < session->cmds_max; i++) { |
214 | struct iscsi_task *task = session->cmds[i]; |
215 | struct qedi_cmd *cmd = task->dd_data; |
216 | |
217 | task->hdr = &cmd->hdr; |
218 | task->hdr_max = sizeof(struct iscsi_hdr); |
219 | |
220 | if (qedi_alloc_sget(qedi, session, cmd)) |
221 | goto free_sgets; |
222 | |
223 | cmd->sense_buffer = dma_alloc_coherent(dev: &qedi->pdev->dev, |
224 | SCSI_SENSE_BUFFERSIZE, |
225 | dma_handle: &cmd->sense_buffer_dma, |
226 | GFP_KERNEL); |
227 | if (!cmd->sense_buffer) |
228 | goto free_sgets; |
229 | } |
230 | |
231 | return 0; |
232 | |
233 | free_sgets: |
234 | qedi_destroy_cmd_pool(qedi, session); |
235 | return -ENOMEM; |
236 | } |
237 | |
238 | static struct iscsi_cls_session * |
239 | qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, |
240 | u16 qdepth, uint32_t initial_cmdsn) |
241 | { |
242 | struct Scsi_Host *shost; |
243 | struct iscsi_cls_session *cls_session; |
244 | struct qedi_ctx *qedi; |
245 | struct qedi_endpoint *qedi_ep; |
246 | |
247 | if (!ep) |
248 | return NULL; |
249 | |
250 | qedi_ep = ep->dd_data; |
251 | shost = qedi_ep->qedi->shost; |
252 | qedi = iscsi_host_priv(shost); |
253 | |
254 | if (cmds_max > qedi->max_sqes) |
255 | cmds_max = qedi->max_sqes; |
256 | else if (cmds_max < QEDI_SQ_WQES_MIN) |
257 | cmds_max = QEDI_SQ_WQES_MIN; |
258 | |
259 | cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost, |
260 | cmds_max, 0, sizeof(struct qedi_cmd), |
261 | initial_cmdsn, ISCSI_MAX_TARGET); |
262 | if (!cls_session) { |
263 | QEDI_ERR(&qedi->dbg_ctx, |
264 | "Failed to setup session for ep=%p\n" , qedi_ep); |
265 | return NULL; |
266 | } |
267 | |
268 | if (qedi_setup_cmd_pool(qedi, session: cls_session->dd_data)) { |
269 | QEDI_ERR(&qedi->dbg_ctx, |
270 | "Failed to setup cmd pool for ep=%p\n" , qedi_ep); |
271 | goto session_teardown; |
272 | } |
273 | |
274 | return cls_session; |
275 | |
276 | session_teardown: |
277 | iscsi_session_teardown(cls_session); |
278 | return NULL; |
279 | } |
280 | |
281 | static void qedi_session_destroy(struct iscsi_cls_session *cls_session) |
282 | { |
283 | struct iscsi_session *session = cls_session->dd_data; |
284 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); |
285 | struct qedi_ctx *qedi = iscsi_host_priv(shost); |
286 | |
287 | qedi_destroy_cmd_pool(qedi, session); |
288 | iscsi_session_teardown(cls_session); |
289 | } |
290 | |
291 | static struct iscsi_cls_conn * |
292 | qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid) |
293 | { |
294 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); |
295 | struct qedi_ctx *qedi = iscsi_host_priv(shost); |
296 | struct iscsi_cls_conn *cls_conn; |
297 | struct qedi_conn *qedi_conn; |
298 | struct iscsi_conn *conn; |
299 | |
300 | cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn), |
301 | cid); |
302 | if (!cls_conn) { |
303 | QEDI_ERR(&qedi->dbg_ctx, |
304 | "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n" , |
305 | cid, cls_session); |
306 | return NULL; |
307 | } |
308 | |
309 | conn = cls_conn->dd_data; |
310 | qedi_conn = conn->dd_data; |
311 | qedi_conn->cls_conn = cls_conn; |
312 | qedi_conn->qedi = qedi; |
313 | qedi_conn->ep = NULL; |
314 | qedi_conn->active_cmd_count = 0; |
315 | INIT_LIST_HEAD(list: &qedi_conn->active_cmd_list); |
316 | spin_lock_init(&qedi_conn->list_lock); |
317 | |
318 | if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) { |
319 | iscsi_conn_printk(KERN_ALERT, conn, |
320 | "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n" , |
321 | cid, cls_session); |
322 | goto free_conn; |
323 | } |
324 | |
325 | return cls_conn; |
326 | |
327 | free_conn: |
328 | iscsi_conn_teardown(cls_conn); |
329 | return NULL; |
330 | } |
331 | |
332 | void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) |
333 | { |
334 | struct iscsi_session *session = cls_session->dd_data; |
335 | struct qedi_conn *qedi_conn = session->leadconn->dd_data; |
336 | |
337 | spin_lock_bh(lock: &session->frwd_lock); |
338 | set_bit(QEDI_BLOCK_IO, addr: &qedi_conn->qedi->flags); |
339 | spin_unlock_bh(lock: &session->frwd_lock); |
340 | } |
341 | |
342 | void qedi_mark_device_available(struct iscsi_cls_session *cls_session) |
343 | { |
344 | struct iscsi_session *session = cls_session->dd_data; |
345 | struct qedi_conn *qedi_conn = session->leadconn->dd_data; |
346 | |
347 | spin_lock_bh(lock: &session->frwd_lock); |
348 | clear_bit(QEDI_BLOCK_IO, addr: &qedi_conn->qedi->flags); |
349 | spin_unlock_bh(lock: &session->frwd_lock); |
350 | } |
351 | |
352 | static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, |
353 | struct qedi_conn *qedi_conn) |
354 | { |
355 | u32 iscsi_cid = qedi_conn->iscsi_conn_id; |
356 | |
357 | if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) { |
358 | iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, |
359 | "conn bind - entry #%d not free\n" , |
360 | iscsi_cid); |
361 | return -EBUSY; |
362 | } |
363 | |
364 | qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn; |
365 | return 0; |
366 | } |
367 | |
368 | struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid) |
369 | { |
370 | if (!qedi->cid_que.conn_cid_tbl) { |
371 | QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n" ); |
372 | return NULL; |
373 | |
374 | } else if (iscsi_cid >= qedi->max_active_conns) { |
375 | QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n" , iscsi_cid); |
376 | return NULL; |
377 | } |
378 | return qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
379 | } |
380 | |
381 | static int qedi_conn_bind(struct iscsi_cls_session *cls_session, |
382 | struct iscsi_cls_conn *cls_conn, |
383 | u64 transport_fd, int is_leading) |
384 | { |
385 | struct iscsi_conn *conn = cls_conn->dd_data; |
386 | struct qedi_conn *qedi_conn = conn->dd_data; |
387 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); |
388 | struct qedi_ctx *qedi = iscsi_host_priv(shost); |
389 | struct qedi_endpoint *qedi_ep; |
390 | struct iscsi_endpoint *ep; |
391 | int rc = 0; |
392 | |
393 | ep = iscsi_lookup_endpoint(handle: transport_fd); |
394 | if (!ep) |
395 | return -EINVAL; |
396 | |
397 | qedi_ep = ep->dd_data; |
398 | if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) || |
399 | (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) { |
400 | rc = -EINVAL; |
401 | goto put_ep; |
402 | } |
403 | |
404 | if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) { |
405 | rc = -EINVAL; |
406 | goto put_ep; |
407 | } |
408 | |
409 | |
410 | qedi_ep->conn = qedi_conn; |
411 | qedi_conn->ep = qedi_ep; |
412 | qedi_conn->iscsi_ep = ep; |
413 | qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid; |
414 | qedi_conn->fw_cid = qedi_ep->fw_cid; |
415 | qedi_conn->cmd_cleanup_req = 0; |
416 | atomic_set(v: &qedi_conn->cmd_cleanup_cmpl, i: 0); |
417 | |
418 | if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) { |
419 | rc = -EINVAL; |
420 | goto put_ep; |
421 | } |
422 | |
423 | |
424 | spin_lock_init(&qedi_conn->tmf_work_lock); |
425 | INIT_LIST_HEAD(list: &qedi_conn->tmf_work_list); |
426 | init_waitqueue_head(&qedi_conn->wait_queue); |
427 | put_ep: |
428 | iscsi_put_endpoint(ep); |
429 | return rc; |
430 | } |
431 | |
432 | static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, |
433 | struct qedi_conn *qedi_conn) |
434 | { |
435 | struct qed_iscsi_params_update *conn_info; |
436 | struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn; |
437 | struct iscsi_conn *conn = cls_conn->dd_data; |
438 | struct qedi_endpoint *qedi_ep; |
439 | int rval; |
440 | |
441 | qedi_ep = qedi_conn->ep; |
442 | |
443 | conn_info = kzalloc(size: sizeof(*conn_info), GFP_KERNEL); |
444 | if (!conn_info) { |
445 | QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n" ); |
446 | return -ENOMEM; |
447 | } |
448 | |
449 | conn_info->update_flag = 0; |
450 | |
451 | if (conn->hdrdgst_en) |
452 | SET_FIELD(conn_info->update_flag, |
453 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true); |
454 | if (conn->datadgst_en) |
455 | SET_FIELD(conn_info->update_flag, |
456 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true); |
457 | if (conn->session->initial_r2t_en) |
458 | SET_FIELD(conn_info->update_flag, |
459 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T, |
460 | true); |
461 | if (conn->session->imm_data_en) |
462 | SET_FIELD(conn_info->update_flag, |
463 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, |
464 | true); |
465 | |
466 | conn_info->max_seq_size = conn->session->max_burst; |
467 | conn_info->max_recv_pdu_length = conn->max_recv_dlength; |
468 | conn_info->max_send_pdu_length = conn->max_xmit_dlength; |
469 | conn_info->first_seq_length = conn->session->first_burst; |
470 | conn_info->exp_stat_sn = conn->exp_statsn; |
471 | |
472 | rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle, |
473 | conn_info); |
474 | if (rval) { |
475 | rval = -ENXIO; |
476 | QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n" ); |
477 | } |
478 | |
479 | kfree(objp: conn_info); |
480 | return rval; |
481 | } |
482 | |
483 | static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en) |
484 | { |
485 | u16 mss = 0; |
486 | u16 hdrs = TCP_HDR_LEN; |
487 | |
488 | if (is_ipv6) |
489 | hdrs += IPV6_HDR_LEN; |
490 | else |
491 | hdrs += IPV4_HDR_LEN; |
492 | |
493 | mss = pmtu - hdrs; |
494 | |
495 | if (!mss) |
496 | mss = DEF_MSS; |
497 | |
498 | return mss; |
499 | } |
500 | |
501 | static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep) |
502 | { |
503 | struct qed_iscsi_params_offload *conn_info; |
504 | struct qedi_ctx *qedi = qedi_ep->qedi; |
505 | int rval; |
506 | int i; |
507 | |
508 | conn_info = kzalloc(size: sizeof(*conn_info), GFP_KERNEL); |
509 | if (!conn_info) { |
510 | QEDI_ERR(&qedi->dbg_ctx, |
511 | "Failed to allocate memory ep=%p\n" , qedi_ep); |
512 | return -ENOMEM; |
513 | } |
514 | |
515 | ether_addr_copy(dst: conn_info->src.mac, src: qedi_ep->src_mac); |
516 | ether_addr_copy(dst: conn_info->dst.mac, src: qedi_ep->dst_mac); |
517 | |
518 | conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]); |
519 | conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]); |
520 | |
521 | if (qedi_ep->ip_type == TCP_IPV4) { |
522 | conn_info->ip_version = 0; |
523 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
524 | "After ntohl: src_addr=%pI4, dst_addr=%pI4\n" , |
525 | qedi_ep->src_addr, qedi_ep->dst_addr); |
526 | } else { |
527 | for (i = 1; i < 4; i++) { |
528 | conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]); |
529 | conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]); |
530 | } |
531 | |
532 | conn_info->ip_version = 1; |
533 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
534 | "After ntohl: src_addr=%pI6, dst_addr=%pI6\n" , |
535 | qedi_ep->src_addr, qedi_ep->dst_addr); |
536 | } |
537 | |
538 | conn_info->src.port = qedi_ep->src_port; |
539 | conn_info->dst.port = qedi_ep->dst_port; |
540 | |
541 | conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE; |
542 | conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma; |
543 | conn_info->vlan_id = qedi_ep->vlan_id; |
544 | |
545 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1); |
546 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1); |
547 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1); |
548 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1); |
549 | |
550 | conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues); |
551 | |
552 | conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT; |
553 | conn_info->dup_ack_theshold = 3; |
554 | conn_info->rcv_wnd = 65535; |
555 | |
556 | conn_info->ss_thresh = 65535; |
557 | conn_info->srtt = 300; |
558 | conn_info->rtt_var = 150; |
559 | conn_info->flow_label = 0; |
560 | conn_info->ka_timeout = DEF_KA_TIMEOUT; |
561 | conn_info->ka_interval = DEF_KA_INTERVAL; |
562 | conn_info->max_rt_time = DEF_MAX_RT_TIME; |
563 | conn_info->ttl = DEF_TTL; |
564 | conn_info->tos_or_tc = DEF_TOS; |
565 | conn_info->remote_port = qedi_ep->dst_port; |
566 | conn_info->local_port = qedi_ep->src_port; |
567 | |
568 | conn_info->mss = qedi_calc_mss(pmtu: qedi_ep->pmtu, |
569 | is_ipv6: (qedi_ep->ip_type == TCP_IPV6), |
570 | tcp_ts_en: 1, vlan_en: (qedi_ep->vlan_id != 0)); |
571 | |
572 | conn_info->cwnd = DEF_MAX_CWND * conn_info->mss; |
573 | conn_info->rcv_wnd_scale = 4; |
574 | conn_info->da_timeout_value = 200; |
575 | conn_info->ack_frequency = 2; |
576 | |
577 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
578 | "Default cq index [%d], mss [%d]\n" , |
579 | conn_info->default_cq, conn_info->mss); |
580 | |
581 | /* Prepare the doorbell parameters */ |
582 | qedi_ep->db_data.agg_flags = 0; |
583 | qedi_ep->db_data.params = 0; |
584 | SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_DEST, DB_DEST_XCM); |
585 | SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_CMD, |
586 | DB_AGG_CMD_MAX); |
587 | SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_VAL_SEL, |
588 | DQ_XCM_ISCSI_SQ_PROD_CMD); |
589 | SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_BYPASS_EN, 1); |
590 | |
591 | /* Register doorbell with doorbell recovery mechanism */ |
592 | rval = qedi_ops->common->db_recovery_add(qedi->cdev, |
593 | qedi_ep->p_doorbell, |
594 | &qedi_ep->db_data, |
595 | DB_REC_WIDTH_32B, |
596 | DB_REC_KERNEL); |
597 | if (rval) { |
598 | kfree(objp: conn_info); |
599 | return rval; |
600 | } |
601 | |
602 | rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info); |
603 | if (rval) { |
604 | /* delete doorbell from doorbell recovery mechanism */ |
605 | rval = qedi_ops->common->db_recovery_del(qedi->cdev, |
606 | qedi_ep->p_doorbell, |
607 | &qedi_ep->db_data); |
608 | |
609 | QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n" , |
610 | rval, qedi_ep); |
611 | } |
612 | |
613 | kfree(objp: conn_info); |
614 | return rval; |
615 | } |
616 | |
617 | static int qedi_conn_start(struct iscsi_cls_conn *cls_conn) |
618 | { |
619 | struct iscsi_conn *conn = cls_conn->dd_data; |
620 | struct qedi_conn *qedi_conn = conn->dd_data; |
621 | struct qedi_ctx *qedi; |
622 | int rval; |
623 | |
624 | qedi = qedi_conn->qedi; |
625 | |
626 | rval = qedi_iscsi_update_conn(qedi, qedi_conn); |
627 | if (rval) { |
628 | iscsi_conn_printk(KERN_ALERT, conn, |
629 | "conn_start: FW offload conn failed.\n" ); |
630 | rval = -EINVAL; |
631 | goto start_err; |
632 | } |
633 | |
634 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
635 | qedi_conn->fw_cleanup_works = 0; |
636 | qedi_conn->ep_disconnect_starting = false; |
637 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
638 | |
639 | qedi_conn->abrt_conn = 0; |
640 | |
641 | rval = iscsi_conn_start(cls_conn); |
642 | if (rval) { |
643 | iscsi_conn_printk(KERN_ALERT, conn, |
644 | "iscsi_conn_start: FW offload conn failed!!\n" ); |
645 | } |
646 | |
647 | start_err: |
648 | return rval; |
649 | } |
650 | |
651 | static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn) |
652 | { |
653 | struct iscsi_conn *conn = cls_conn->dd_data; |
654 | struct qedi_conn *qedi_conn = conn->dd_data; |
655 | struct Scsi_Host *shost; |
656 | struct qedi_ctx *qedi; |
657 | |
658 | shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); |
659 | qedi = iscsi_host_priv(shost); |
660 | |
661 | qedi_conn_free_login_resources(qedi, qedi_conn); |
662 | iscsi_conn_teardown(cls_conn); |
663 | } |
664 | |
665 | static int qedi_ep_get_param(struct iscsi_endpoint *ep, |
666 | enum iscsi_param param, char *buf) |
667 | { |
668 | struct qedi_endpoint *qedi_ep = ep->dd_data; |
669 | int len; |
670 | |
671 | if (!qedi_ep) |
672 | return -ENOTCONN; |
673 | |
674 | switch (param) { |
675 | case ISCSI_PARAM_CONN_PORT: |
676 | len = sprintf(buf, fmt: "%hu\n" , qedi_ep->dst_port); |
677 | break; |
678 | case ISCSI_PARAM_CONN_ADDRESS: |
679 | if (qedi_ep->ip_type == TCP_IPV4) |
680 | len = sprintf(buf, fmt: "%pI4\n" , qedi_ep->dst_addr); |
681 | else |
682 | len = sprintf(buf, fmt: "%pI6\n" , qedi_ep->dst_addr); |
683 | break; |
684 | default: |
685 | return -ENOTCONN; |
686 | } |
687 | |
688 | return len; |
689 | } |
690 | |
691 | static int qedi_host_get_param(struct Scsi_Host *shost, |
692 | enum iscsi_host_param param, char *buf) |
693 | { |
694 | struct qedi_ctx *qedi; |
695 | int len; |
696 | |
697 | qedi = iscsi_host_priv(shost); |
698 | |
699 | switch (param) { |
700 | case ISCSI_HOST_PARAM_HWADDRESS: |
701 | len = sysfs_format_mac(buf, addr: qedi->mac, len: 6); |
702 | break; |
703 | case ISCSI_HOST_PARAM_NETDEV_NAME: |
704 | len = sprintf(buf, fmt: "host%d\n" , shost->host_no); |
705 | break; |
706 | case ISCSI_HOST_PARAM_IPADDRESS: |
707 | if (qedi->ip_type == TCP_IPV4) |
708 | len = sprintf(buf, fmt: "%pI4\n" , qedi->src_ip); |
709 | else |
710 | len = sprintf(buf, fmt: "%pI6\n" , qedi->src_ip); |
711 | break; |
712 | default: |
713 | return iscsi_host_get_param(shost, param, buf); |
714 | } |
715 | |
716 | return len; |
717 | } |
718 | |
719 | static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn, |
720 | struct iscsi_stats *stats) |
721 | { |
722 | struct iscsi_conn *conn = cls_conn->dd_data; |
723 | struct qed_iscsi_stats iscsi_stats; |
724 | struct Scsi_Host *shost; |
725 | struct qedi_ctx *qedi; |
726 | |
727 | shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); |
728 | qedi = iscsi_host_priv(shost); |
729 | qedi_ops->get_stats(qedi->cdev, &iscsi_stats); |
730 | |
731 | conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt; |
732 | conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt; |
733 | conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt; |
734 | conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt; |
735 | conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt; |
736 | |
737 | stats->txdata_octets = conn->txdata_octets; |
738 | stats->rxdata_octets = conn->rxdata_octets; |
739 | stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; |
740 | stats->dataout_pdus = conn->dataout_pdus_cnt; |
741 | stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; |
742 | stats->datain_pdus = conn->datain_pdus_cnt; |
743 | stats->r2t_pdus = conn->r2t_pdus_cnt; |
744 | stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; |
745 | stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; |
746 | stats->digest_err = 0; |
747 | stats->timeout_err = 0; |
748 | strcpy(p: stats->custom[0].desc, q: "eh_abort_cnt" ); |
749 | stats->custom[0].value = conn->eh_abort_cnt; |
750 | stats->custom_length = 1; |
751 | } |
752 | |
753 | static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn) |
754 | { |
755 | struct scsi_sge *bd_tbl; |
756 | |
757 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
758 | |
759 | bd_tbl->sge_addr.hi = |
760 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); |
761 | bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr; |
762 | bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr - |
763 | qedi_conn->gen_pdu.req_buf; |
764 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
765 | bd_tbl->sge_addr.hi = |
766 | (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); |
767 | bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr; |
768 | bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN; |
769 | } |
770 | |
771 | static int qedi_iscsi_send_generic_request(struct iscsi_task *task) |
772 | { |
773 | struct qedi_cmd *cmd = task->dd_data; |
774 | struct qedi_conn *qedi_conn = cmd->conn; |
775 | char *buf; |
776 | int data_len; |
777 | int rc = 0; |
778 | |
779 | qedi_iscsi_prep_generic_pdu_bd(qedi_conn); |
780 | switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { |
781 | case ISCSI_OP_LOGIN: |
782 | qedi_send_iscsi_login(qedi_conn, task); |
783 | break; |
784 | case ISCSI_OP_NOOP_OUT: |
785 | data_len = qedi_conn->gen_pdu.req_buf_size; |
786 | buf = qedi_conn->gen_pdu.req_buf; |
787 | if (data_len) |
788 | rc = qedi_send_iscsi_nopout(qedi_conn, task, |
789 | datap: buf, data_len, unsol: 1); |
790 | else |
791 | rc = qedi_send_iscsi_nopout(qedi_conn, task, |
792 | NULL, data_len: 0, unsol: 1); |
793 | break; |
794 | case ISCSI_OP_LOGOUT: |
795 | rc = qedi_send_iscsi_logout(qedi_conn, task); |
796 | break; |
797 | case ISCSI_OP_SCSI_TMFUNC: |
798 | rc = qedi_send_iscsi_tmf(qedi_conn, mtask: task); |
799 | break; |
800 | case ISCSI_OP_TEXT: |
801 | rc = qedi_send_iscsi_text(qedi_conn, task); |
802 | break; |
803 | default: |
804 | iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, |
805 | "unsupported op 0x%x\n" , task->hdr->opcode); |
806 | } |
807 | |
808 | return rc; |
809 | } |
810 | |
811 | static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) |
812 | { |
813 | struct qedi_conn *qedi_conn = conn->dd_data; |
814 | struct qedi_cmd *cmd = task->dd_data; |
815 | |
816 | memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN); |
817 | |
818 | qedi_conn->gen_pdu.req_buf_size = task->data_count; |
819 | |
820 | if (task->data_count) { |
821 | memcpy(qedi_conn->gen_pdu.req_buf, task->data, |
822 | task->data_count); |
823 | qedi_conn->gen_pdu.req_wr_ptr = |
824 | qedi_conn->gen_pdu.req_buf + task->data_count; |
825 | } |
826 | |
827 | cmd->conn = conn->dd_data; |
828 | return qedi_iscsi_send_generic_request(task); |
829 | } |
830 | |
831 | static int qedi_task_xmit(struct iscsi_task *task) |
832 | { |
833 | struct iscsi_conn *conn = task->conn; |
834 | struct qedi_conn *qedi_conn = conn->dd_data; |
835 | struct qedi_cmd *cmd = task->dd_data; |
836 | struct scsi_cmnd *sc = task->sc; |
837 | |
838 | /* Clear now so in cleanup_task we know it didn't make it */ |
839 | cmd->scsi_cmd = NULL; |
840 | cmd->task_id = U16_MAX; |
841 | |
842 | if (test_bit(QEDI_IN_SHUTDOWN, &qedi_conn->qedi->flags)) |
843 | return -ENODEV; |
844 | |
845 | if (test_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags)) |
846 | return -EACCES; |
847 | |
848 | cmd->state = 0; |
849 | cmd->task = NULL; |
850 | cmd->use_slowpath = false; |
851 | cmd->conn = qedi_conn; |
852 | cmd->task = task; |
853 | cmd->io_cmd_in_list = false; |
854 | INIT_LIST_HEAD(list: &cmd->io_cmd); |
855 | |
856 | if (!sc) |
857 | return qedi_mtask_xmit(conn, task); |
858 | |
859 | cmd->scsi_cmd = sc; |
860 | return qedi_iscsi_send_ioreq(task); |
861 | } |
862 | |
863 | static void qedi_offload_work(struct work_struct *work) |
864 | { |
865 | struct qedi_endpoint *qedi_ep = |
866 | container_of(work, struct qedi_endpoint, offload_work); |
867 | struct qedi_ctx *qedi; |
868 | int wait_delay = 5 * HZ; |
869 | int ret; |
870 | |
871 | qedi = qedi_ep->qedi; |
872 | |
873 | ret = qedi_iscsi_offload_conn(qedi_ep); |
874 | if (ret) { |
875 | QEDI_ERR(&qedi->dbg_ctx, |
876 | "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n" , |
877 | qedi_ep->iscsi_cid, qedi_ep, ret); |
878 | qedi_ep->state = EP_STATE_OFLDCONN_FAILED; |
879 | return; |
880 | } |
881 | |
882 | ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait, |
883 | (qedi_ep->state == |
884 | EP_STATE_OFLDCONN_COMPL), |
885 | wait_delay); |
886 | if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) { |
887 | qedi_ep->state = EP_STATE_OFLDCONN_FAILED; |
888 | QEDI_ERR(&qedi->dbg_ctx, |
889 | "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n" , |
890 | qedi_ep->iscsi_cid, qedi_ep); |
891 | } |
892 | } |
893 | |
894 | static struct iscsi_endpoint * |
895 | qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, |
896 | int non_blocking) |
897 | { |
898 | struct qedi_ctx *qedi; |
899 | struct iscsi_endpoint *ep; |
900 | struct qedi_endpoint *qedi_ep; |
901 | struct sockaddr_in *addr; |
902 | struct sockaddr_in6 *addr6; |
903 | struct iscsi_path path_req; |
904 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; |
905 | u32 iscsi_cid = QEDI_CID_RESERVED; |
906 | u16 len = 0; |
907 | char *buf = NULL; |
908 | int ret, tmp; |
909 | |
910 | if (!shost) { |
911 | ret = -ENXIO; |
912 | QEDI_ERR(NULL, "shost is NULL\n" ); |
913 | return ERR_PTR(error: ret); |
914 | } |
915 | |
916 | if (qedi_do_not_recover) { |
917 | ret = -ENOMEM; |
918 | return ERR_PTR(error: ret); |
919 | } |
920 | |
921 | qedi = iscsi_host_priv(shost); |
922 | |
923 | if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) || |
924 | test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { |
925 | ret = -ENOMEM; |
926 | return ERR_PTR(error: ret); |
927 | } |
928 | |
929 | if (atomic_read(v: &qedi->link_state) != QEDI_LINK_UP) { |
930 | QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n" ); |
931 | return ERR_PTR(error: -ENXIO); |
932 | } |
933 | |
934 | ep = iscsi_create_endpoint(dd_size: sizeof(struct qedi_endpoint)); |
935 | if (!ep) { |
936 | QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n" ); |
937 | ret = -ENOMEM; |
938 | return ERR_PTR(error: ret); |
939 | } |
940 | qedi_ep = ep->dd_data; |
941 | memset(qedi_ep, 0, sizeof(struct qedi_endpoint)); |
942 | INIT_WORK(&qedi_ep->offload_work, qedi_offload_work); |
943 | qedi_ep->state = EP_STATE_IDLE; |
944 | qedi_ep->iscsi_cid = (u32)-1; |
945 | qedi_ep->qedi = qedi; |
946 | |
947 | if (dst_addr->sa_family == AF_INET) { |
948 | addr = (struct sockaddr_in *)dst_addr; |
949 | memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr, |
950 | sizeof(struct in_addr)); |
951 | qedi_ep->dst_port = ntohs(addr->sin_port); |
952 | qedi_ep->ip_type = TCP_IPV4; |
953 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
954 | "dst_addr=%pI4, dst_port=%u\n" , |
955 | qedi_ep->dst_addr, qedi_ep->dst_port); |
956 | } else if (dst_addr->sa_family == AF_INET6) { |
957 | addr6 = (struct sockaddr_in6 *)dst_addr; |
958 | memcpy(qedi_ep->dst_addr, &addr6->sin6_addr, |
959 | sizeof(struct in6_addr)); |
960 | qedi_ep->dst_port = ntohs(addr6->sin6_port); |
961 | qedi_ep->ip_type = TCP_IPV6; |
962 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
963 | "dst_addr=%pI6, dst_port=%u\n" , |
964 | qedi_ep->dst_addr, qedi_ep->dst_port); |
965 | } else { |
966 | QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n" ); |
967 | } |
968 | |
969 | ret = qedi_alloc_sq(qedi, ep: qedi_ep); |
970 | if (ret) |
971 | goto ep_conn_exit; |
972 | |
973 | ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle, |
974 | &qedi_ep->fw_cid, &qedi_ep->p_doorbell); |
975 | |
976 | if (ret) { |
977 | QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n" ); |
978 | ret = -ENXIO; |
979 | goto ep_free_sq; |
980 | } |
981 | |
982 | iscsi_cid = qedi_ep->handle; |
983 | qedi_ep->iscsi_cid = iscsi_cid; |
984 | |
985 | init_waitqueue_head(&qedi_ep->ofld_wait); |
986 | init_waitqueue_head(&qedi_ep->tcp_ofld_wait); |
987 | qedi_ep->state = EP_STATE_OFLDCONN_START; |
988 | qedi->ep_tbl[iscsi_cid] = qedi_ep; |
989 | |
990 | buf = (char *)&path_req; |
991 | len = sizeof(path_req); |
992 | memset(&path_req, 0, len); |
993 | |
994 | msg_type = ISCSI_KEVENT_PATH_REQ; |
995 | path_req.handle = (u64)qedi_ep->iscsi_cid; |
996 | path_req.pmtu = qedi->ll2_mtu; |
997 | qedi_ep->pmtu = qedi->ll2_mtu; |
998 | if (qedi_ep->ip_type == TCP_IPV4) { |
999 | memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr, |
1000 | sizeof(struct in_addr)); |
1001 | path_req.ip_addr_len = 4; |
1002 | } else { |
1003 | memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr, |
1004 | sizeof(struct in6_addr)); |
1005 | path_req.ip_addr_len = 16; |
1006 | } |
1007 | |
1008 | ret = iscsi_offload_mesg(shost, transport: &qedi_iscsi_transport, type: msg_type, data: buf, |
1009 | data_size: len); |
1010 | if (ret) { |
1011 | QEDI_ERR(&qedi->dbg_ctx, |
1012 | "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n" , |
1013 | iscsi_cid, ret); |
1014 | goto ep_rel_conn; |
1015 | } |
1016 | |
1017 | atomic_inc(v: &qedi->num_offloads); |
1018 | return ep; |
1019 | |
1020 | ep_rel_conn: |
1021 | qedi->ep_tbl[iscsi_cid] = NULL; |
1022 | tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); |
1023 | if (tmp) |
1024 | QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n" , |
1025 | tmp); |
1026 | ep_free_sq: |
1027 | qedi_free_sq(qedi, ep: qedi_ep); |
1028 | ep_conn_exit: |
1029 | iscsi_destroy_endpoint(ep); |
1030 | return ERR_PTR(error: ret); |
1031 | } |
1032 | |
1033 | static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) |
1034 | { |
1035 | struct qedi_endpoint *qedi_ep; |
1036 | int ret = 0; |
1037 | |
1038 | if (qedi_do_not_recover) |
1039 | return 1; |
1040 | |
1041 | qedi_ep = ep->dd_data; |
1042 | if (qedi_ep->state == EP_STATE_IDLE || |
1043 | qedi_ep->state == EP_STATE_OFLDCONN_NONE || |
1044 | qedi_ep->state == EP_STATE_OFLDCONN_FAILED) |
1045 | return -1; |
1046 | |
1047 | if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL) |
1048 | ret = 1; |
1049 | |
1050 | ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait, |
1051 | QEDI_OFLD_WAIT_STATE(qedi_ep), |
1052 | msecs_to_jiffies(timeout_ms)); |
1053 | |
1054 | if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED) |
1055 | ret = -1; |
1056 | |
1057 | if (ret > 0) |
1058 | return 1; |
1059 | else if (!ret) |
1060 | return 0; |
1061 | else |
1062 | return ret; |
1063 | } |
1064 | |
1065 | static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) |
1066 | { |
1067 | struct qedi_cmd *cmd, *cmd_tmp; |
1068 | |
1069 | spin_lock(lock: &qedi_conn->list_lock); |
1070 | list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, |
1071 | io_cmd) { |
1072 | list_del_init(entry: &cmd->io_cmd); |
1073 | qedi_conn->active_cmd_count--; |
1074 | } |
1075 | spin_unlock(lock: &qedi_conn->list_lock); |
1076 | } |
1077 | |
1078 | static void qedi_ep_disconnect(struct iscsi_endpoint *ep) |
1079 | { |
1080 | struct qedi_endpoint *qedi_ep; |
1081 | struct qedi_conn *qedi_conn = NULL; |
1082 | struct qedi_ctx *qedi; |
1083 | int ret = 0; |
1084 | int wait_delay; |
1085 | int abrt_conn = 0; |
1086 | |
1087 | wait_delay = 60 * HZ + DEF_MAX_RT_TIME; |
1088 | qedi_ep = ep->dd_data; |
1089 | qedi = qedi_ep->qedi; |
1090 | |
1091 | flush_work(work: &qedi_ep->offload_work); |
1092 | |
1093 | if (qedi_ep->state == EP_STATE_OFLDCONN_START) |
1094 | goto ep_exit_recover; |
1095 | |
1096 | if (qedi_ep->conn) { |
1097 | qedi_conn = qedi_ep->conn; |
1098 | abrt_conn = qedi_conn->abrt_conn; |
1099 | |
1100 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1101 | "cid=0x%x qedi_ep=%p waiting for %d tmfs\n" , |
1102 | qedi_ep->iscsi_cid, qedi_ep, |
1103 | qedi_conn->fw_cleanup_works); |
1104 | |
1105 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
1106 | qedi_conn->ep_disconnect_starting = true; |
1107 | while (qedi_conn->fw_cleanup_works > 0) { |
1108 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
1109 | msleep(msecs: 1000); |
1110 | spin_lock(lock: &qedi_conn->tmf_work_lock); |
1111 | } |
1112 | spin_unlock(lock: &qedi_conn->tmf_work_lock); |
1113 | |
1114 | if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { |
1115 | if (qedi_do_not_recover) { |
1116 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1117 | "Do not recover cid=0x%x\n" , |
1118 | qedi_ep->iscsi_cid); |
1119 | goto ep_exit_recover; |
1120 | } |
1121 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1122 | "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n" , |
1123 | qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state); |
1124 | qedi_cleanup_active_cmd_list(qedi_conn); |
1125 | goto ep_release_conn; |
1126 | } |
1127 | } |
1128 | |
1129 | if (qedi_do_not_recover) |
1130 | goto ep_exit_recover; |
1131 | |
1132 | switch (qedi_ep->state) { |
1133 | case EP_STATE_OFLDCONN_START: |
1134 | case EP_STATE_OFLDCONN_NONE: |
1135 | goto ep_release_conn; |
1136 | case EP_STATE_OFLDCONN_FAILED: |
1137 | break; |
1138 | case EP_STATE_OFLDCONN_COMPL: |
1139 | if (unlikely(!qedi_conn)) |
1140 | break; |
1141 | |
1142 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1143 | "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n" , |
1144 | qedi_conn->active_cmd_count, abrt_conn, |
1145 | qedi_ep->state, |
1146 | qedi_ep->iscsi_cid, |
1147 | qedi_ep->conn |
1148 | ); |
1149 | |
1150 | if (!qedi_conn->active_cmd_count) |
1151 | abrt_conn = 0; |
1152 | else |
1153 | abrt_conn = 1; |
1154 | |
1155 | if (abrt_conn) |
1156 | qedi_clearsq(qedi, qedi_conn, NULL); |
1157 | break; |
1158 | default: |
1159 | break; |
1160 | } |
1161 | |
1162 | if (!abrt_conn) |
1163 | wait_delay += qedi->pf_params.iscsi_pf_params.two_msl_timer; |
1164 | |
1165 | qedi_ep->state = EP_STATE_DISCONN_START; |
1166 | |
1167 | if (test_bit(QEDI_IN_SHUTDOWN, &qedi->flags) || |
1168 | test_bit(QEDI_IN_RECOVERY, &qedi->flags)) |
1169 | goto ep_release_conn; |
1170 | |
1171 | /* Delete doorbell from doorbell recovery mechanism */ |
1172 | ret = qedi_ops->common->db_recovery_del(qedi->cdev, |
1173 | qedi_ep->p_doorbell, |
1174 | &qedi_ep->db_data); |
1175 | |
1176 | ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn); |
1177 | if (ret) { |
1178 | QEDI_WARN(&qedi->dbg_ctx, |
1179 | "destroy_conn failed returned %d\n" , ret); |
1180 | } else { |
1181 | ret = wait_event_interruptible_timeout( |
1182 | qedi_ep->tcp_ofld_wait, |
1183 | (qedi_ep->state != |
1184 | EP_STATE_DISCONN_START), |
1185 | wait_delay); |
1186 | if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) { |
1187 | QEDI_WARN(&qedi->dbg_ctx, |
1188 | "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n" , |
1189 | ret, wait_delay, qedi_ep->iscsi_cid); |
1190 | } |
1191 | } |
1192 | |
1193 | ep_release_conn: |
1194 | ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); |
1195 | if (ret) |
1196 | QEDI_WARN(&qedi->dbg_ctx, |
1197 | "release_conn returned %d, cid=0x%x\n" , |
1198 | ret, qedi_ep->iscsi_cid); |
1199 | ep_exit_recover: |
1200 | qedi_ep->state = EP_STATE_IDLE; |
1201 | qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL; |
1202 | qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL; |
1203 | qedi_free_id(id_tbl: &qedi->lcl_port_tbl, id: qedi_ep->src_port); |
1204 | qedi_free_sq(qedi, ep: qedi_ep); |
1205 | |
1206 | if (qedi_conn) |
1207 | qedi_conn->ep = NULL; |
1208 | |
1209 | qedi_ep->conn = NULL; |
1210 | qedi_ep->qedi = NULL; |
1211 | atomic_dec(v: &qedi->num_offloads); |
1212 | |
1213 | iscsi_destroy_endpoint(ep); |
1214 | } |
1215 | |
1216 | static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid) |
1217 | { |
1218 | struct qed_dev *cdev = qedi->cdev; |
1219 | struct qedi_uio_dev *udev; |
1220 | struct qedi_uio_ctrl *uctrl; |
1221 | struct sk_buff *skb; |
1222 | u32 len; |
1223 | int rc = 0; |
1224 | |
1225 | udev = qedi->udev; |
1226 | if (!udev) { |
1227 | QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n" ); |
1228 | return -EINVAL; |
1229 | } |
1230 | |
1231 | uctrl = (struct qedi_uio_ctrl *)udev->uctrl; |
1232 | if (!uctrl) { |
1233 | QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n" ); |
1234 | return -EINVAL; |
1235 | } |
1236 | |
1237 | len = uctrl->host_tx_pkt_len; |
1238 | if (!len) { |
1239 | QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n" , len); |
1240 | return -EINVAL; |
1241 | } |
1242 | |
1243 | skb = alloc_skb(size: len, GFP_ATOMIC); |
1244 | if (!skb) { |
1245 | QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n" ); |
1246 | return -EINVAL; |
1247 | } |
1248 | |
1249 | skb_put(skb, len); |
1250 | memcpy(skb->data, udev->tx_pkt, len); |
1251 | skb->ip_summed = CHECKSUM_NONE; |
1252 | |
1253 | if (vlanid) |
1254 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: vlanid); |
1255 | |
1256 | rc = qedi_ops->ll2->start_xmit(cdev, skb, 0); |
1257 | if (rc) { |
1258 | QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n" , |
1259 | rc); |
1260 | kfree_skb(skb); |
1261 | } |
1262 | |
1263 | uctrl->host_tx_pkt_len = 0; |
1264 | uctrl->hw_tx_cons++; |
1265 | |
1266 | return rc; |
1267 | } |
1268 | |
1269 | static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) |
1270 | { |
1271 | struct qedi_ctx *qedi; |
1272 | struct qedi_endpoint *qedi_ep; |
1273 | int ret = 0; |
1274 | u32 iscsi_cid; |
1275 | u16 port_id = 0; |
1276 | |
1277 | if (!shost) { |
1278 | ret = -ENXIO; |
1279 | QEDI_ERR(NULL, "shost is NULL\n" ); |
1280 | return ret; |
1281 | } |
1282 | |
1283 | if (strcmp(shost->hostt->proc_name, "qedi" )) { |
1284 | ret = -ENXIO; |
1285 | QEDI_ERR(NULL, "shost %s is invalid\n" , |
1286 | shost->hostt->proc_name); |
1287 | return ret; |
1288 | } |
1289 | |
1290 | qedi = iscsi_host_priv(shost); |
1291 | if (path_data->handle == QEDI_PATH_HANDLE) { |
1292 | ret = qedi_data_avail(qedi, vlanid: path_data->vlan_id); |
1293 | goto set_path_exit; |
1294 | } |
1295 | |
1296 | iscsi_cid = (u32)path_data->handle; |
1297 | if (iscsi_cid >= qedi->max_active_conns) { |
1298 | ret = -EINVAL; |
1299 | goto set_path_exit; |
1300 | } |
1301 | qedi_ep = qedi->ep_tbl[iscsi_cid]; |
1302 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1303 | "iscsi_cid=0x%x, qedi_ep=%p\n" , iscsi_cid, qedi_ep); |
1304 | if (!qedi_ep) { |
1305 | ret = -EINVAL; |
1306 | goto set_path_exit; |
1307 | } |
1308 | |
1309 | if (!is_valid_ether_addr(addr: &path_data->mac_addr[0])) { |
1310 | QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n" ); |
1311 | qedi_ep->state = EP_STATE_OFLDCONN_NONE; |
1312 | ret = -EIO; |
1313 | goto set_path_exit; |
1314 | } |
1315 | |
1316 | ether_addr_copy(dst: &qedi_ep->src_mac[0], src: &qedi->mac[0]); |
1317 | ether_addr_copy(dst: &qedi_ep->dst_mac[0], src: &path_data->mac_addr[0]); |
1318 | |
1319 | qedi_ep->vlan_id = path_data->vlan_id; |
1320 | if (path_data->pmtu < DEF_PATH_MTU) { |
1321 | qedi_ep->pmtu = qedi->ll2_mtu; |
1322 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1323 | "MTU cannot be %u, using default MTU %u\n" , |
1324 | path_data->pmtu, qedi_ep->pmtu); |
1325 | } |
1326 | |
1327 | if (path_data->pmtu != qedi->ll2_mtu) { |
1328 | if (path_data->pmtu > JUMBO_MTU) { |
1329 | ret = -EINVAL; |
1330 | QEDI_ERR(NULL, "Invalid MTU %u\n" , path_data->pmtu); |
1331 | goto set_path_exit; |
1332 | } |
1333 | |
1334 | qedi_reset_host_mtu(qedi, mtu: path_data->pmtu); |
1335 | qedi_ep->pmtu = qedi->ll2_mtu; |
1336 | } |
1337 | |
1338 | port_id = qedi_ep->src_port; |
1339 | if (port_id >= QEDI_LOCAL_PORT_MIN && |
1340 | port_id < QEDI_LOCAL_PORT_MAX) { |
1341 | if (qedi_alloc_id(id_tbl: &qedi->lcl_port_tbl, id: port_id)) |
1342 | port_id = 0; |
1343 | } else { |
1344 | port_id = 0; |
1345 | } |
1346 | |
1347 | if (!port_id) { |
1348 | port_id = qedi_alloc_new_id(id_tbl: &qedi->lcl_port_tbl); |
1349 | if (port_id == QEDI_LOCAL_PORT_INVALID) { |
1350 | QEDI_ERR(&qedi->dbg_ctx, |
1351 | "Failed to allocate port id for iscsi_cid=0x%x\n" , |
1352 | iscsi_cid); |
1353 | ret = -ENOMEM; |
1354 | goto set_path_exit; |
1355 | } |
1356 | } |
1357 | |
1358 | qedi_ep->src_port = port_id; |
1359 | |
1360 | if (qedi_ep->ip_type == TCP_IPV4) { |
1361 | memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr, |
1362 | sizeof(struct in_addr)); |
1363 | memcpy(&qedi->src_ip[0], &path_data->src.v4_addr, |
1364 | sizeof(struct in_addr)); |
1365 | qedi->ip_type = TCP_IPV4; |
1366 | |
1367 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1368 | "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n" , |
1369 | qedi_ep->src_addr, qedi_ep->src_port, |
1370 | qedi_ep->dst_addr, qedi_ep->dst_port); |
1371 | } else { |
1372 | memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr, |
1373 | sizeof(struct in6_addr)); |
1374 | memcpy(&qedi->src_ip[0], &path_data->src.v6_addr, |
1375 | sizeof(struct in6_addr)); |
1376 | qedi->ip_type = TCP_IPV6; |
1377 | |
1378 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
1379 | "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n" , |
1380 | qedi_ep->src_addr, qedi_ep->src_port, |
1381 | qedi_ep->dst_addr, qedi_ep->dst_port); |
1382 | } |
1383 | |
1384 | queue_work(wq: qedi->offload_thread, work: &qedi_ep->offload_work); |
1385 | |
1386 | ret = 0; |
1387 | |
1388 | set_path_exit: |
1389 | return ret; |
1390 | } |
1391 | |
1392 | static umode_t qedi_attr_is_visible(int param_type, int param) |
1393 | { |
1394 | switch (param_type) { |
1395 | case ISCSI_HOST_PARAM: |
1396 | switch (param) { |
1397 | case ISCSI_HOST_PARAM_NETDEV_NAME: |
1398 | case ISCSI_HOST_PARAM_HWADDRESS: |
1399 | case ISCSI_HOST_PARAM_IPADDRESS: |
1400 | return 0444; |
1401 | default: |
1402 | return 0; |
1403 | } |
1404 | case ISCSI_PARAM: |
1405 | switch (param) { |
1406 | case ISCSI_PARAM_MAX_RECV_DLENGTH: |
1407 | case ISCSI_PARAM_MAX_XMIT_DLENGTH: |
1408 | case ISCSI_PARAM_HDRDGST_EN: |
1409 | case ISCSI_PARAM_DATADGST_EN: |
1410 | case ISCSI_PARAM_CONN_ADDRESS: |
1411 | case ISCSI_PARAM_CONN_PORT: |
1412 | case ISCSI_PARAM_EXP_STATSN: |
1413 | case ISCSI_PARAM_PERSISTENT_ADDRESS: |
1414 | case ISCSI_PARAM_PERSISTENT_PORT: |
1415 | case ISCSI_PARAM_PING_TMO: |
1416 | case ISCSI_PARAM_RECV_TMO: |
1417 | case ISCSI_PARAM_INITIAL_R2T_EN: |
1418 | case ISCSI_PARAM_MAX_R2T: |
1419 | case ISCSI_PARAM_IMM_DATA_EN: |
1420 | case ISCSI_PARAM_FIRST_BURST: |
1421 | case ISCSI_PARAM_MAX_BURST: |
1422 | case ISCSI_PARAM_PDU_INORDER_EN: |
1423 | case ISCSI_PARAM_DATASEQ_INORDER_EN: |
1424 | case ISCSI_PARAM_ERL: |
1425 | case ISCSI_PARAM_TARGET_NAME: |
1426 | case ISCSI_PARAM_TPGT: |
1427 | case ISCSI_PARAM_USERNAME: |
1428 | case ISCSI_PARAM_PASSWORD: |
1429 | case ISCSI_PARAM_USERNAME_IN: |
1430 | case ISCSI_PARAM_PASSWORD_IN: |
1431 | case ISCSI_PARAM_FAST_ABORT: |
1432 | case ISCSI_PARAM_ABORT_TMO: |
1433 | case ISCSI_PARAM_LU_RESET_TMO: |
1434 | case ISCSI_PARAM_TGT_RESET_TMO: |
1435 | case ISCSI_PARAM_IFACE_NAME: |
1436 | case ISCSI_PARAM_INITIATOR_NAME: |
1437 | case ISCSI_PARAM_BOOT_ROOT: |
1438 | case ISCSI_PARAM_BOOT_NIC: |
1439 | case ISCSI_PARAM_BOOT_TARGET: |
1440 | return 0444; |
1441 | default: |
1442 | return 0; |
1443 | } |
1444 | } |
1445 | |
1446 | return 0; |
1447 | } |
1448 | |
1449 | static void qedi_cleanup_task(struct iscsi_task *task) |
1450 | { |
1451 | struct qedi_cmd *cmd; |
1452 | |
1453 | if (task->state == ISCSI_TASK_PENDING) { |
1454 | QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n" , |
1455 | refcount_read(&task->refcount)); |
1456 | return; |
1457 | } |
1458 | |
1459 | if (task->sc) |
1460 | qedi_iscsi_unmap_sg_list(cmd: task->dd_data); |
1461 | |
1462 | cmd = task->dd_data; |
1463 | if (cmd->task_id != U16_MAX) |
1464 | qedi_clear_task_idx(iscsi_host_priv(task->conn->session->host), |
1465 | idx: cmd->task_id); |
1466 | |
1467 | cmd->task_id = U16_MAX; |
1468 | cmd->scsi_cmd = NULL; |
1469 | } |
1470 | |
1471 | struct iscsi_transport qedi_iscsi_transport = { |
1472 | .owner = THIS_MODULE, |
1473 | .name = QEDI_MODULE_NAME, |
1474 | .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST | |
1475 | CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO, |
1476 | .create_session = qedi_session_create, |
1477 | .destroy_session = qedi_session_destroy, |
1478 | .create_conn = qedi_conn_create, |
1479 | .bind_conn = qedi_conn_bind, |
1480 | .unbind_conn = iscsi_conn_unbind, |
1481 | .start_conn = qedi_conn_start, |
1482 | .stop_conn = iscsi_conn_stop, |
1483 | .destroy_conn = qedi_conn_destroy, |
1484 | .set_param = iscsi_set_param, |
1485 | .get_ep_param = qedi_ep_get_param, |
1486 | .get_conn_param = iscsi_conn_get_param, |
1487 | .get_session_param = iscsi_session_get_param, |
1488 | .get_host_param = qedi_host_get_param, |
1489 | .send_pdu = iscsi_conn_send_pdu, |
1490 | .get_stats = qedi_conn_get_stats, |
1491 | .xmit_task = qedi_task_xmit, |
1492 | .cleanup_task = qedi_cleanup_task, |
1493 | .session_recovery_timedout = iscsi_session_recovery_timedout, |
1494 | .ep_connect = qedi_ep_connect, |
1495 | .ep_poll = qedi_ep_poll, |
1496 | .ep_disconnect = qedi_ep_disconnect, |
1497 | .set_path = qedi_set_path, |
1498 | .attr_is_visible = qedi_attr_is_visible, |
1499 | }; |
1500 | |
1501 | void qedi_start_conn_recovery(struct qedi_ctx *qedi, |
1502 | struct qedi_conn *qedi_conn) |
1503 | { |
1504 | struct iscsi_cls_session *cls_sess; |
1505 | struct iscsi_cls_conn *cls_conn; |
1506 | struct iscsi_conn *conn; |
1507 | |
1508 | cls_conn = qedi_conn->cls_conn; |
1509 | conn = cls_conn->dd_data; |
1510 | cls_sess = iscsi_conn_to_session(cls_conn); |
1511 | |
1512 | if (iscsi_is_session_online(session: cls_sess)) { |
1513 | qedi_conn->abrt_conn = 1; |
1514 | QEDI_ERR(&qedi->dbg_ctx, |
1515 | "Failing connection, state=0x%x, cid=0x%x\n" , |
1516 | conn->session->state, qedi_conn->iscsi_conn_id); |
1517 | iscsi_conn_failure(conn: qedi_conn->cls_conn->dd_data, |
1518 | err: ISCSI_ERR_CONN_FAILED); |
1519 | } |
1520 | } |
1521 | |
1522 | static const struct { |
1523 | enum iscsi_error_types error_code; |
1524 | char *err_string; |
1525 | } qedi_iscsi_error[] = { |
1526 | { ISCSI_STATUS_NONE, |
1527 | "tcp_error none" |
1528 | }, |
1529 | { ISCSI_CONN_ERROR_TASK_CID_MISMATCH, |
1530 | "task cid mismatch" |
1531 | }, |
1532 | { ISCSI_CONN_ERROR_TASK_NOT_VALID, |
1533 | "invalid task" |
1534 | }, |
1535 | { ISCSI_CONN_ERROR_RQ_RING_IS_FULL, |
1536 | "rq ring full" |
1537 | }, |
1538 | { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL, |
1539 | "cmdq ring full" |
1540 | }, |
1541 | { ISCSI_CONN_ERROR_HQE_CACHING_FAILED, |
1542 | "sge caching failed" |
1543 | }, |
1544 | { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR, |
1545 | "hdr digest error" |
1546 | }, |
1547 | { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR, |
1548 | "local cmpl error" |
1549 | }, |
1550 | { ISCSI_CONN_ERROR_DATA_OVERRUN, |
1551 | "invalid task" |
1552 | }, |
1553 | { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR, |
1554 | "out of sge error" |
1555 | }, |
1556 | { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR, |
1557 | "tcp ip fragment error" |
1558 | }, |
1559 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN, |
1560 | "AHS len protocol error" |
1561 | }, |
1562 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE, |
1563 | "itt out of range error" |
1564 | }, |
1565 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE, |
1566 | "data seg more than pdu size" |
1567 | }, |
1568 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE, |
1569 | "invalid opcode" |
1570 | }, |
1571 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE, |
1572 | "invalid opcode before update" |
1573 | }, |
1574 | { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL, |
1575 | "unexpected opcode" |
1576 | }, |
1577 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA, |
1578 | "r2t carries no data" |
1579 | }, |
1580 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN, |
1581 | "data sn error" |
1582 | }, |
1583 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT, |
1584 | "data TTT error" |
1585 | }, |
1586 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT, |
1587 | "r2t TTT error" |
1588 | }, |
1589 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET, |
1590 | "buffer offset error" |
1591 | }, |
1592 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO, |
1593 | "buffer offset ooo" |
1594 | }, |
1595 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN, |
1596 | "data seg len 0" |
1597 | }, |
1598 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0, |
1599 | "data xer len error" |
1600 | }, |
1601 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1, |
1602 | "data xer len1 error" |
1603 | }, |
1604 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2, |
1605 | "data xer len2 error" |
1606 | }, |
1607 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN, |
1608 | "protocol lun error" |
1609 | }, |
1610 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO, |
1611 | "f bit zero error" |
1612 | }, |
1613 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN, |
1614 | "exp stat sn error" |
1615 | }, |
1616 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO, |
1617 | "dsl not zero error" |
1618 | }, |
1619 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL, |
1620 | "invalid dsl" |
1621 | }, |
1622 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG, |
1623 | "data seg len too big" |
1624 | }, |
1625 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT, |
1626 | "outstanding r2t count error" |
1627 | }, |
1628 | { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH, |
1629 | "sense datalen error" |
1630 | }, |
1631 | }; |
1632 | |
1633 | static char *qedi_get_iscsi_error(enum iscsi_error_types err_code) |
1634 | { |
1635 | int i; |
1636 | char *msg = NULL; |
1637 | |
1638 | for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) { |
1639 | if (qedi_iscsi_error[i].error_code == err_code) { |
1640 | msg = qedi_iscsi_error[i].err_string; |
1641 | break; |
1642 | } |
1643 | } |
1644 | return msg; |
1645 | } |
1646 | |
1647 | void qedi_process_iscsi_error(struct qedi_endpoint *ep, |
1648 | struct iscsi_eqe_data *data) |
1649 | { |
1650 | struct qedi_conn *qedi_conn; |
1651 | struct qedi_ctx *qedi; |
1652 | char warn_notice[] = "iscsi_warning" ; |
1653 | char error_notice[] = "iscsi_error" ; |
1654 | char unknown_msg[] = "Unknown error" ; |
1655 | char *message; |
1656 | int need_recovery = 0; |
1657 | u32 err_mask = 0; |
1658 | char *msg; |
1659 | |
1660 | if (!ep) |
1661 | return; |
1662 | |
1663 | qedi_conn = ep->conn; |
1664 | if (!qedi_conn) |
1665 | return; |
1666 | |
1667 | qedi = ep->qedi; |
1668 | |
1669 | QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n" , |
1670 | data->error_code); |
1671 | |
1672 | if (err_mask) { |
1673 | need_recovery = 0; |
1674 | message = warn_notice; |
1675 | } else { |
1676 | need_recovery = 1; |
1677 | message = error_notice; |
1678 | } |
1679 | |
1680 | msg = qedi_get_iscsi_error(err_code: data->error_code); |
1681 | if (!msg) { |
1682 | need_recovery = 0; |
1683 | msg = unknown_msg; |
1684 | } |
1685 | |
1686 | iscsi_conn_printk(KERN_ALERT, |
1687 | qedi_conn->cls_conn->dd_data, |
1688 | "qedi: %s - %s\n" , message, msg); |
1689 | |
1690 | if (need_recovery) |
1691 | qedi_start_conn_recovery(qedi: qedi_conn->qedi, qedi_conn); |
1692 | } |
1693 | |
1694 | void qedi_process_tcp_error(struct qedi_endpoint *ep, |
1695 | struct iscsi_eqe_data *data) |
1696 | { |
1697 | struct qedi_conn *qedi_conn; |
1698 | |
1699 | if (!ep) |
1700 | return; |
1701 | |
1702 | qedi_conn = ep->conn; |
1703 | if (!qedi_conn) |
1704 | return; |
1705 | |
1706 | QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n" , |
1707 | data->error_code); |
1708 | |
1709 | qedi_start_conn_recovery(qedi: qedi_conn->qedi, qedi_conn); |
1710 | } |
1711 | |