]>
Commit | Line | Data |
---|---|---|
ace7f46b MR |
1 | /* |
2 | * QLogic iSCSI Offload Driver | |
3 | * Copyright (c) 2016 Cavium Inc. | |
4 | * | |
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 | |
7 | * this source tree. | |
8 | */ | |
9 | ||
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> | |
15 | ||
16 | #include "qedi.h" | |
17 | #include "qedi_iscsi.h" | |
18 | #include "qedi_gbl.h" | |
19 | ||
20 | int qedi_recover_all_conns(struct qedi_ctx *qedi) | |
21 | { | |
22 | struct qedi_conn *qedi_conn; | |
23 | int i; | |
24 | ||
25 | for (i = 0; i < qedi->max_active_conns; i++) { | |
26 | qedi_conn = qedi_get_conn_from_id(qedi, i); | |
27 | if (!qedi_conn) | |
28 | continue; | |
29 | ||
30 | qedi_start_conn_recovery(qedi, qedi_conn); | |
31 | } | |
32 | ||
33 | return SUCCESS; | |
34 | } | |
35 | ||
36 | static int qedi_eh_host_reset(struct scsi_cmnd *cmd) | |
37 | { | |
38 | struct Scsi_Host *shost = cmd->device->host; | |
39 | struct qedi_ctx *qedi; | |
40 | ||
41 | qedi = iscsi_host_priv(shost); | |
42 | ||
43 | return qedi_recover_all_conns(qedi); | |
44 | } | |
45 | ||
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, | |
b6a05c82 | 51 | .eh_timed_out = iscsi_eh_cmd_timed_out, |
ace7f46b MR |
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, | |
59 | .this_id = -1, | |
60 | .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD, | |
61 | .max_sectors = 0xffff, | |
62 | .cmd_per_lun = 128, | |
63 | .use_clustering = ENABLE_CLUSTERING, | |
64 | .shost_attrs = qedi_shost_attrs, | |
65 | }; | |
66 | ||
67 | static void qedi_conn_free_login_resources(struct qedi_ctx *qedi, | |
68 | struct qedi_conn *qedi_conn) | |
69 | { | |
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; | |
75 | } | |
76 | ||
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; | |
82 | } | |
83 | ||
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; | |
90 | } | |
91 | ||
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; | |
98 | } | |
99 | } | |
100 | ||
101 | static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi, | |
102 | struct qedi_conn *qedi_conn) | |
103 | { | |
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, | |
108 | GFP_KERNEL); | |
109 | if (!qedi_conn->gen_pdu.req_buf) | |
110 | goto login_req_buf_failure; | |
111 | ||
112 | qedi_conn->gen_pdu.req_buf_size = 0; | |
113 | qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf; | |
114 | ||
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, | |
119 | GFP_KERNEL); | |
120 | if (!qedi_conn->gen_pdu.resp_buf) | |
121 | goto login_resp_buf_failure; | |
122 | ||
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; | |
125 | ||
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; | |
131 | ||
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, | |
135 | GFP_KERNEL); | |
136 | if (!qedi_conn->gen_pdu.resp_bd_tbl) | |
137 | goto login_resp_bd_tbl_failure; | |
138 | ||
139 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS, | |
140 | "Allocation successful, cid=0x%x\n", | |
141 | qedi_conn->iscsi_conn_id); | |
142 | return 0; | |
143 | ||
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; | |
149 | ||
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"); | |
163 | return -ENOMEM; | |
164 | } | |
165 | ||
166 | static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi, | |
167 | struct iscsi_session *session) | |
168 | { | |
169 | int i; | |
170 | ||
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; | |
174 | ||
175 | if (cmd->io_tbl.sge_tbl) | |
176 | dma_free_coherent(&qedi->pdev->dev, | |
177 | QEDI_ISCSI_MAX_BDS_PER_CMD * | |
be086e7c | 178 | sizeof(struct scsi_sge), |
ace7f46b MR |
179 | cmd->io_tbl.sge_tbl, |
180 | cmd->io_tbl.sge_tbl_dma); | |
181 | ||
182 | if (cmd->sense_buffer) | |
183 | dma_free_coherent(&qedi->pdev->dev, | |
184 | SCSI_SENSE_BUFFERSIZE, | |
185 | cmd->sense_buffer, | |
186 | cmd->sense_buffer_dma); | |
187 | } | |
188 | } | |
189 | ||
190 | static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session, | |
191 | struct qedi_cmd *cmd) | |
192 | { | |
193 | struct qedi_io_bdt *io = &cmd->io_tbl; | |
be086e7c | 194 | struct scsi_sge *sge; |
ace7f46b MR |
195 | |
196 | io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev, | |
197 | QEDI_ISCSI_MAX_BDS_PER_CMD * | |
198 | sizeof(*sge), | |
199 | &io->sge_tbl_dma, GFP_KERNEL); | |
200 | if (!io->sge_tbl) { | |
201 | iscsi_session_printk(KERN_ERR, session, | |
202 | "Could not allocate BD table.\n"); | |
203 | return -ENOMEM; | |
204 | } | |
205 | ||
206 | io->sge_valid = 0; | |
207 | return 0; | |
208 | } | |
209 | ||
210 | static int qedi_setup_cmd_pool(struct qedi_ctx *qedi, | |
211 | struct iscsi_session *session) | |
212 | { | |
213 | int i; | |
214 | ||
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; | |
218 | ||
219 | task->hdr = &cmd->hdr; | |
220 | task->hdr_max = sizeof(struct iscsi_hdr); | |
221 | ||
222 | if (qedi_alloc_sget(qedi, session, cmd)) | |
223 | goto free_sgets; | |
224 | ||
225 | cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev, | |
226 | SCSI_SENSE_BUFFERSIZE, | |
227 | &cmd->sense_buffer_dma, | |
228 | GFP_KERNEL); | |
229 | if (!cmd->sense_buffer) | |
230 | goto free_sgets; | |
231 | } | |
232 | ||
233 | return 0; | |
234 | ||
235 | free_sgets: | |
236 | qedi_destroy_cmd_pool(qedi, session); | |
237 | return -ENOMEM; | |
238 | } | |
239 | ||
240 | static struct iscsi_cls_session * | |
241 | qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, | |
242 | u16 qdepth, uint32_t initial_cmdsn) | |
243 | { | |
244 | struct Scsi_Host *shost; | |
245 | struct iscsi_cls_session *cls_session; | |
246 | struct qedi_ctx *qedi; | |
247 | struct qedi_endpoint *qedi_ep; | |
248 | ||
249 | if (!ep) | |
250 | return NULL; | |
251 | ||
252 | qedi_ep = ep->dd_data; | |
253 | shost = qedi_ep->qedi->shost; | |
254 | qedi = iscsi_host_priv(shost); | |
255 | ||
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; | |
260 | ||
261 | cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost, | |
262 | cmds_max, 0, sizeof(struct qedi_cmd), | |
263 | initial_cmdsn, ISCSI_MAX_TARGET); | |
264 | if (!cls_session) { | |
265 | QEDI_ERR(&qedi->dbg_ctx, | |
266 | "Failed to setup session for ep=%p\n", qedi_ep); | |
267 | return NULL; | |
268 | } | |
269 | ||
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; | |
274 | } | |
275 | ||
276 | return cls_session; | |
277 | ||
278 | session_teardown: | |
279 | iscsi_session_teardown(cls_session); | |
280 | return NULL; | |
281 | } | |
282 | ||
283 | static void qedi_session_destroy(struct iscsi_cls_session *cls_session) | |
284 | { | |
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); | |
288 | ||
289 | qedi_destroy_cmd_pool(qedi, session); | |
290 | iscsi_session_teardown(cls_session); | |
291 | } | |
292 | ||
293 | static struct iscsi_cls_conn * | |
294 | qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid) | |
295 | { | |
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; | |
301 | ||
302 | cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn), | |
303 | cid); | |
304 | if (!cls_conn) { | |
305 | QEDI_ERR(&qedi->dbg_ctx, | |
306 | "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n", | |
307 | cid, cls_session); | |
308 | return NULL; | |
309 | } | |
310 | ||
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); | |
319 | ||
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", | |
323 | cid, cls_session); | |
324 | goto free_conn; | |
325 | } | |
326 | ||
327 | return cls_conn; | |
328 | ||
329 | free_conn: | |
330 | iscsi_conn_teardown(cls_conn); | |
331 | return NULL; | |
332 | } | |
333 | ||
334 | void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) | |
335 | { | |
336 | iscsi_block_session(cls_session); | |
337 | } | |
338 | ||
339 | void qedi_mark_device_available(struct iscsi_cls_session *cls_session) | |
340 | { | |
341 | iscsi_unblock_session(cls_session); | |
342 | } | |
343 | ||
344 | static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, | |
345 | struct qedi_conn *qedi_conn) | |
346 | { | |
347 | u32 iscsi_cid = qedi_conn->iscsi_conn_id; | |
348 | ||
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", | |
352 | iscsi_cid); | |
353 | return -EBUSY; | |
354 | } | |
355 | ||
356 | qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn; | |
357 | return 0; | |
358 | } | |
359 | ||
360 | struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid) | |
361 | { | |
362 | if (!qedi->cid_que.conn_cid_tbl) { | |
363 | QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n"); | |
364 | return NULL; | |
365 | ||
366 | } else if (iscsi_cid >= qedi->max_active_conns) { | |
367 | QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid); | |
368 | return NULL; | |
369 | } | |
370 | return qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
371 | } | |
372 | ||
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) | |
376 | { | |
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; | |
383 | ||
384 | ep = iscsi_lookup_endpoint(transport_fd); | |
385 | if (!ep) | |
386 | return -EINVAL; | |
387 | ||
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)) | |
391 | return -EINVAL; | |
392 | ||
393 | if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) | |
394 | return -EINVAL; | |
395 | ||
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; | |
402 | ||
403 | if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) | |
404 | return -EINVAL; | |
405 | ||
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); | |
409 | return 0; | |
410 | } | |
411 | ||
412 | static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, | |
413 | struct qedi_conn *qedi_conn) | |
414 | { | |
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; | |
419 | int rval; | |
420 | ||
421 | qedi_ep = qedi_conn->ep; | |
422 | ||
423 | conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); | |
424 | if (!conn_info) { | |
425 | QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n"); | |
426 | return -ENOMEM; | |
427 | } | |
428 | ||
429 | conn_info->update_flag = 0; | |
430 | ||
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, | |
440 | true); | |
441 | if (conn->session->imm_data_en) | |
442 | SET_FIELD(conn_info->update_flag, | |
443 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, | |
444 | true); | |
445 | ||
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; | |
451 | ||
452 | rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle, | |
453 | conn_info); | |
454 | if (rval) { | |
455 | rval = -ENXIO; | |
456 | QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n"); | |
ace7f46b MR |
457 | } |
458 | ||
459 | kfree(conn_info); | |
ace7f46b MR |
460 | return rval; |
461 | } | |
462 | ||
463 | static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en) | |
464 | { | |
465 | u16 mss = 0; | |
466 | u16 hdrs = TCP_HDR_LEN; | |
467 | ||
468 | if (is_ipv6) | |
469 | hdrs += IPV6_HDR_LEN; | |
470 | else | |
471 | hdrs += IPV4_HDR_LEN; | |
472 | ||
473 | if (vlan_en) | |
474 | hdrs += VLAN_LEN; | |
475 | ||
476 | mss = pmtu - hdrs; | |
477 | ||
478 | if (tcp_ts_en) | |
479 | mss -= TCP_OPTION_LEN; | |
480 | ||
481 | if (!mss) | |
482 | mss = DEF_MSS; | |
483 | ||
484 | return mss; | |
485 | } | |
486 | ||
487 | static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep) | |
488 | { | |
489 | struct qedi_ctx *qedi = qedi_ep->qedi; | |
490 | struct qed_iscsi_params_offload *conn_info; | |
491 | int rval; | |
492 | int i; | |
493 | ||
494 | conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); | |
495 | if (!conn_info) { | |
496 | QEDI_ERR(&qedi->dbg_ctx, | |
497 | "Failed to allocate memory ep=%p\n", qedi_ep); | |
498 | return -ENOMEM; | |
499 | } | |
500 | ||
501 | ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac); | |
502 | ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac); | |
503 | ||
504 | conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]); | |
505 | conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]); | |
506 | ||
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); | |
512 | } else { | |
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]); | |
516 | } | |
517 | ||
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); | |
522 | } | |
523 | ||
524 | conn_info->src.port = qedi_ep->src_port; | |
525 | conn_info->dst.port = qedi_ep->dst_port; | |
526 | ||
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; | |
530 | ||
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); | |
535 | ||
536 | conn_info->default_cq = (qedi_ep->fw_cid % 8); | |
537 | ||
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; | |
542 | ||
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; | |
554 | ||
555 | conn_info->mss = qedi_calc_mss(qedi_ep->pmtu, | |
556 | (qedi_ep->ip_type == TCP_IPV6), | |
557 | 1, (qedi_ep->vlan_id != 0)); | |
558 | ||
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; | |
563 | ||
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); | |
567 | ||
568 | rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info); | |
569 | if (rval) | |
570 | QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n", | |
571 | rval, qedi_ep); | |
572 | ||
573 | kfree(conn_info); | |
574 | return rval; | |
575 | } | |
576 | ||
577 | static int qedi_conn_start(struct iscsi_cls_conn *cls_conn) | |
578 | { | |
579 | struct iscsi_conn *conn = cls_conn->dd_data; | |
580 | struct qedi_conn *qedi_conn = conn->dd_data; | |
581 | struct qedi_ctx *qedi; | |
582 | int rval; | |
583 | ||
584 | qedi = qedi_conn->qedi; | |
585 | ||
586 | rval = qedi_iscsi_update_conn(qedi, qedi_conn); | |
587 | if (rval) { | |
588 | iscsi_conn_printk(KERN_ALERT, conn, | |
589 | "conn_start: FW oflload conn failed.\n"); | |
590 | rval = -EINVAL; | |
591 | goto start_err; | |
592 | } | |
593 | ||
594 | clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
595 | qedi_conn->abrt_conn = 0; | |
596 | ||
597 | rval = iscsi_conn_start(cls_conn); | |
598 | if (rval) { | |
599 | iscsi_conn_printk(KERN_ALERT, conn, | |
600 | "iscsi_conn_start: FW oflload conn failed!!\n"); | |
601 | } | |
602 | ||
603 | start_err: | |
604 | return rval; | |
605 | } | |
606 | ||
607 | static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn) | |
608 | { | |
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; | |
613 | ||
614 | shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); | |
615 | qedi = iscsi_host_priv(shost); | |
616 | ||
617 | qedi_conn_free_login_resources(qedi, qedi_conn); | |
618 | iscsi_conn_teardown(cls_conn); | |
619 | } | |
620 | ||
621 | static int qedi_ep_get_param(struct iscsi_endpoint *ep, | |
622 | enum iscsi_param param, char *buf) | |
623 | { | |
624 | struct qedi_endpoint *qedi_ep = ep->dd_data; | |
625 | int len; | |
626 | ||
627 | if (!qedi_ep) | |
628 | return -ENOTCONN; | |
629 | ||
630 | switch (param) { | |
631 | case ISCSI_PARAM_CONN_PORT: | |
632 | len = sprintf(buf, "%hu\n", qedi_ep->dst_port); | |
633 | break; | |
634 | case ISCSI_PARAM_CONN_ADDRESS: | |
635 | if (qedi_ep->ip_type == TCP_IPV4) | |
636 | len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr); | |
637 | else | |
638 | len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr); | |
639 | break; | |
640 | default: | |
641 | return -ENOTCONN; | |
642 | } | |
643 | ||
644 | return len; | |
645 | } | |
646 | ||
647 | static int qedi_host_get_param(struct Scsi_Host *shost, | |
648 | enum iscsi_host_param param, char *buf) | |
649 | { | |
650 | struct qedi_ctx *qedi; | |
651 | int len; | |
652 | ||
653 | qedi = iscsi_host_priv(shost); | |
654 | ||
655 | switch (param) { | |
656 | case ISCSI_HOST_PARAM_HWADDRESS: | |
657 | len = sysfs_format_mac(buf, qedi->mac, 6); | |
658 | break; | |
659 | case ISCSI_HOST_PARAM_NETDEV_NAME: | |
660 | len = sprintf(buf, "host%d\n", shost->host_no); | |
661 | break; | |
662 | case ISCSI_HOST_PARAM_IPADDRESS: | |
663 | if (qedi->ip_type == TCP_IPV4) | |
664 | len = sprintf(buf, "%pI4\n", qedi->src_ip); | |
665 | else | |
666 | len = sprintf(buf, "%pI6\n", qedi->src_ip); | |
667 | break; | |
668 | default: | |
669 | return iscsi_host_get_param(shost, param, buf); | |
670 | } | |
671 | ||
672 | return len; | |
673 | } | |
674 | ||
675 | static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn, | |
676 | struct iscsi_stats *stats) | |
677 | { | |
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; | |
682 | ||
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); | |
686 | ||
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; | |
692 | ||
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; | |
707 | } | |
708 | ||
709 | static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn) | |
710 | { | |
be086e7c | 711 | struct scsi_sge *bd_tbl; |
ace7f46b | 712 | |
be086e7c | 713 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
ace7f46b MR |
714 | |
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; | |
be086e7c | 720 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
ace7f46b MR |
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; | |
ace7f46b MR |
725 | } |
726 | ||
727 | static int qedi_iscsi_send_generic_request(struct iscsi_task *task) | |
728 | { | |
729 | struct qedi_cmd *cmd = task->dd_data; | |
730 | struct qedi_conn *qedi_conn = cmd->conn; | |
731 | char *buf; | |
732 | int data_len; | |
733 | int rc = 0; | |
734 | ||
735 | qedi_iscsi_prep_generic_pdu_bd(qedi_conn); | |
736 | switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { | |
737 | case ISCSI_OP_LOGIN: | |
738 | qedi_send_iscsi_login(qedi_conn, task); | |
739 | break; | |
740 | case ISCSI_OP_NOOP_OUT: | |
741 | data_len = qedi_conn->gen_pdu.req_buf_size; | |
742 | buf = qedi_conn->gen_pdu.req_buf; | |
743 | if (data_len) | |
744 | rc = qedi_send_iscsi_nopout(qedi_conn, task, | |
745 | buf, data_len, 1); | |
746 | else | |
747 | rc = qedi_send_iscsi_nopout(qedi_conn, task, | |
748 | NULL, 0, 1); | |
749 | break; | |
750 | case ISCSI_OP_LOGOUT: | |
751 | rc = qedi_send_iscsi_logout(qedi_conn, task); | |
752 | break; | |
753 | case ISCSI_OP_SCSI_TMFUNC: | |
754 | rc = qedi_iscsi_abort_work(qedi_conn, task); | |
755 | break; | |
756 | case ISCSI_OP_TEXT: | |
757 | rc = qedi_send_iscsi_text(qedi_conn, task); | |
758 | break; | |
759 | default: | |
760 | iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, | |
761 | "unsupported op 0x%x\n", task->hdr->opcode); | |
762 | } | |
763 | ||
764 | return rc; | |
765 | } | |
766 | ||
767 | static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) | |
768 | { | |
769 | struct qedi_conn *qedi_conn = conn->dd_data; | |
770 | struct qedi_cmd *cmd = task->dd_data; | |
771 | ||
772 | memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN); | |
773 | ||
774 | qedi_conn->gen_pdu.req_buf_size = task->data_count; | |
775 | ||
776 | if (task->data_count) { | |
777 | memcpy(qedi_conn->gen_pdu.req_buf, task->data, | |
778 | task->data_count); | |
779 | qedi_conn->gen_pdu.req_wr_ptr = | |
780 | qedi_conn->gen_pdu.req_buf + task->data_count; | |
781 | } | |
782 | ||
783 | cmd->conn = conn->dd_data; | |
784 | cmd->scsi_cmd = NULL; | |
785 | return qedi_iscsi_send_generic_request(task); | |
786 | } | |
787 | ||
788 | static int qedi_task_xmit(struct iscsi_task *task) | |
789 | { | |
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; | |
794 | ||
795 | cmd->state = 0; | |
796 | cmd->task = NULL; | |
797 | cmd->use_slowpath = false; | |
798 | cmd->conn = qedi_conn; | |
799 | cmd->task = task; | |
800 | cmd->io_cmd_in_list = false; | |
801 | INIT_LIST_HEAD(&cmd->io_cmd); | |
802 | ||
803 | if (!sc) | |
804 | return qedi_mtask_xmit(conn, task); | |
805 | ||
806 | cmd->scsi_cmd = sc; | |
807 | return qedi_iscsi_send_ioreq(task); | |
808 | } | |
809 | ||
810 | static struct iscsi_endpoint * | |
811 | qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, | |
812 | int non_blocking) | |
813 | { | |
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; | |
824 | u16 len = 0; | |
825 | char *buf = NULL; | |
826 | int ret; | |
827 | ||
828 | if (!shost) { | |
829 | ret = -ENXIO; | |
830 | QEDI_ERR(NULL, "shost is NULL\n"); | |
831 | return ERR_PTR(ret); | |
832 | } | |
833 | ||
bd571195 | 834 | if (qedi_do_not_recover) { |
ace7f46b MR |
835 | ret = -ENOMEM; |
836 | return ERR_PTR(ret); | |
837 | } | |
838 | ||
839 | qedi = iscsi_host_priv(shost); | |
840 | cdev = qedi->cdev; | |
841 | udev = qedi->udev; | |
842 | ||
843 | if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) || | |
844 | test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { | |
845 | ret = -ENOMEM; | |
846 | return ERR_PTR(ret); | |
847 | } | |
848 | ||
849 | ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint)); | |
850 | if (!ep) { | |
851 | QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n"); | |
852 | ret = -ENOMEM; | |
853 | return ERR_PTR(ret); | |
854 | } | |
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; | |
860 | ||
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); | |
879 | } else { | |
880 | QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n"); | |
881 | } | |
882 | ||
883 | if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) { | |
884 | QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n"); | |
885 | ret = -ENXIO; | |
886 | goto ep_conn_exit; | |
887 | } | |
888 | ||
889 | ret = qedi_alloc_sq(qedi, qedi_ep); | |
890 | if (ret) | |
891 | goto ep_conn_exit; | |
892 | ||
893 | ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle, | |
894 | &qedi_ep->fw_cid, &qedi_ep->p_doorbell); | |
895 | ||
896 | if (ret) { | |
897 | QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n"); | |
898 | ret = -ENXIO; | |
899 | goto ep_free_sq; | |
900 | } | |
901 | ||
902 | iscsi_cid = qedi_ep->handle; | |
903 | qedi_ep->iscsi_cid = iscsi_cid; | |
904 | ||
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; | |
909 | ||
910 | buf = (char *)&path_req; | |
911 | len = sizeof(path_req); | |
912 | memset(&path_req, 0, len); | |
913 | ||
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; | |
922 | } else { | |
923 | memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr, | |
924 | sizeof(struct in6_addr)); | |
925 | path_req.ip_addr_len = 16; | |
926 | } | |
927 | ||
928 | ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf, | |
929 | len); | |
930 | if (ret) { | |
931 | QEDI_ERR(&qedi->dbg_ctx, | |
932 | "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n", | |
933 | iscsi_cid, ret); | |
934 | goto ep_rel_conn; | |
935 | } | |
936 | ||
937 | atomic_inc(&qedi->num_offloads); | |
938 | return ep; | |
939 | ||
940 | ep_rel_conn: | |
941 | qedi->ep_tbl[iscsi_cid] = NULL; | |
942 | ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); | |
943 | if (ret) | |
944 | QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n", | |
945 | ret); | |
946 | ep_free_sq: | |
947 | qedi_free_sq(qedi, qedi_ep); | |
948 | ep_conn_exit: | |
949 | iscsi_destroy_endpoint(ep); | |
950 | return ERR_PTR(ret); | |
951 | } | |
952 | ||
953 | static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) | |
954 | { | |
955 | struct qedi_endpoint *qedi_ep; | |
956 | int ret = 0; | |
957 | ||
bd571195 | 958 | if (qedi_do_not_recover) |
ace7f46b MR |
959 | return 1; |
960 | ||
961 | qedi_ep = ep->dd_data; | |
962 | if (qedi_ep->state == EP_STATE_IDLE || | |
963 | qedi_ep->state == EP_STATE_OFLDCONN_FAILED) | |
964 | return -1; | |
965 | ||
966 | if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL) | |
967 | ret = 1; | |
968 | ||
969 | ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait, | |
970 | QEDI_OFLD_WAIT_STATE(qedi_ep), | |
971 | msecs_to_jiffies(timeout_ms)); | |
972 | ||
973 | if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED) | |
974 | ret = -1; | |
975 | ||
976 | if (ret > 0) | |
977 | return 1; | |
978 | else if (!ret) | |
979 | return 0; | |
980 | else | |
981 | return ret; | |
982 | } | |
983 | ||
984 | static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) | |
985 | { | |
986 | struct qedi_cmd *cmd, *cmd_tmp; | |
987 | ||
988 | list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, | |
989 | io_cmd) { | |
990 | list_del_init(&cmd->io_cmd); | |
991 | qedi_conn->active_cmd_count--; | |
992 | } | |
993 | } | |
994 | ||
995 | static void qedi_ep_disconnect(struct iscsi_endpoint *ep) | |
996 | { | |
997 | struct qedi_endpoint *qedi_ep; | |
998 | struct qedi_conn *qedi_conn = NULL; | |
999 | struct iscsi_conn *conn = NULL; | |
1000 | struct qedi_ctx *qedi; | |
1001 | int ret = 0; | |
1002 | int wait_delay = 20 * HZ; | |
1003 | int abrt_conn = 0; | |
1004 | int count = 10; | |
1005 | ||
1006 | qedi_ep = ep->dd_data; | |
1007 | qedi = qedi_ep->qedi; | |
1008 | ||
1009 | flush_work(&qedi_ep->offload_work); | |
1010 | ||
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; | |
1016 | ||
1017 | while (count--) { | |
1018 | if (!test_bit(QEDI_CONN_FW_CLEANUP, | |
1019 | &qedi_conn->flags)) { | |
1020 | break; | |
1021 | } | |
1022 | msleep(1000); | |
1023 | } | |
1024 | ||
1025 | if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { | |
bd571195 | 1026 | if (qedi_do_not_recover) { |
ace7f46b MR |
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; | |
1031 | } | |
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; | |
1037 | } | |
1038 | } | |
1039 | ||
bd571195 | 1040 | if (qedi_do_not_recover) |
ace7f46b MR |
1041 | goto ep_exit_recover; |
1042 | ||
1043 | switch (qedi_ep->state) { | |
1044 | case EP_STATE_OFLDCONN_START: | |
1045 | goto ep_release_conn; | |
1046 | case EP_STATE_OFLDCONN_FAILED: | |
1047 | break; | |
1048 | case EP_STATE_OFLDCONN_COMPL: | |
1049 | if (unlikely(!qedi_conn)) | |
1050 | break; | |
1051 | ||
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, | |
1055 | qedi_ep->state, | |
1056 | qedi_ep->iscsi_cid, | |
1057 | qedi_ep->conn | |
1058 | ); | |
1059 | ||
1060 | if (!qedi_conn->active_cmd_count) | |
1061 | abrt_conn = 0; | |
1062 | else | |
1063 | abrt_conn = 1; | |
1064 | ||
1065 | if (abrt_conn) | |
1066 | qedi_clearsq(qedi, qedi_conn, NULL); | |
1067 | break; | |
1068 | default: | |
1069 | break; | |
1070 | } | |
1071 | ||
1072 | qedi_ep->state = EP_STATE_DISCONN_START; | |
1073 | ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn); | |
1074 | if (ret) { | |
1075 | QEDI_WARN(&qedi->dbg_ctx, | |
1076 | "destroy_conn failed returned %d\n", ret); | |
1077 | } else { | |
1078 | ret = wait_event_interruptible_timeout( | |
1079 | qedi_ep->tcp_ofld_wait, | |
1080 | (qedi_ep->state != | |
1081 | EP_STATE_DISCONN_START), | |
1082 | wait_delay); | |
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); | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | ep_release_conn: | |
1091 | ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); | |
1092 | if (ret) | |
1093 | QEDI_WARN(&qedi->dbg_ctx, | |
1094 | "release_conn returned %d, cid=0x%x\n", | |
1095 | ret, qedi_ep->iscsi_cid); | |
1096 | ep_exit_recover: | |
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); | |
1102 | ||
1103 | if (qedi_conn) | |
1104 | qedi_conn->ep = NULL; | |
1105 | ||
1106 | qedi_ep->conn = NULL; | |
1107 | qedi_ep->qedi = NULL; | |
1108 | atomic_dec(&qedi->num_offloads); | |
1109 | ||
1110 | iscsi_destroy_endpoint(ep); | |
1111 | } | |
1112 | ||
1113 | static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid) | |
1114 | { | |
1115 | struct qed_dev *cdev = qedi->cdev; | |
1116 | struct qedi_uio_dev *udev; | |
1117 | struct qedi_uio_ctrl *uctrl; | |
1118 | struct sk_buff *skb; | |
1119 | u32 len; | |
1120 | int rc = 0; | |
1121 | ||
1122 | udev = qedi->udev; | |
1123 | if (!udev) { | |
1124 | QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n"); | |
1125 | return -EINVAL; | |
1126 | } | |
1127 | ||
1128 | uctrl = (struct qedi_uio_ctrl *)udev->uctrl; | |
1129 | if (!uctrl) { | |
1130 | QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n"); | |
1131 | return -EINVAL; | |
1132 | } | |
1133 | ||
1134 | len = uctrl->host_tx_pkt_len; | |
1135 | if (!len) { | |
1136 | QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len); | |
1137 | return -EINVAL; | |
1138 | } | |
1139 | ||
1140 | skb = alloc_skb(len, GFP_ATOMIC); | |
1141 | if (!skb) { | |
1142 | QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n"); | |
1143 | return -EINVAL; | |
1144 | } | |
1145 | ||
1146 | skb_put(skb, len); | |
1147 | memcpy(skb->data, udev->tx_pkt, len); | |
1148 | skb->ip_summed = CHECKSUM_NONE; | |
1149 | ||
1150 | if (vlanid) | |
1151 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid); | |
1152 | ||
1153 | rc = qedi_ops->ll2->start_xmit(cdev, skb); | |
1154 | if (rc) { | |
1155 | QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n", | |
1156 | rc); | |
1157 | kfree_skb(skb); | |
1158 | } | |
1159 | ||
1160 | uctrl->host_tx_pkt_len = 0; | |
1161 | uctrl->hw_tx_cons++; | |
1162 | ||
1163 | return rc; | |
1164 | } | |
1165 | ||
1166 | static void qedi_offload_work(struct work_struct *work) | |
1167 | { | |
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; | |
1172 | int ret; | |
1173 | ||
1174 | qedi = qedi_ep->qedi; | |
1175 | ||
1176 | ret = qedi_iscsi_offload_conn(qedi_ep); | |
1177 | if (ret) { | |
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; | |
1182 | return; | |
1183 | } | |
1184 | ||
1185 | ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait, | |
1186 | (qedi_ep->state == | |
1187 | EP_STATE_OFLDCONN_COMPL), | |
1188 | wait_delay); | |
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); | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) | |
1198 | { | |
1199 | struct qedi_ctx *qedi; | |
1200 | struct qedi_endpoint *qedi_ep; | |
1201 | int ret = 0; | |
1202 | u32 iscsi_cid; | |
1203 | u16 port_id = 0; | |
1204 | ||
1205 | if (!shost) { | |
1206 | ret = -ENXIO; | |
1207 | QEDI_ERR(NULL, "shost is NULL\n"); | |
1208 | return ret; | |
1209 | } | |
1210 | ||
1211 | if (strcmp(shost->hostt->proc_name, "qedi")) { | |
1212 | ret = -ENXIO; | |
1213 | QEDI_ERR(NULL, "shost %s is invalid\n", | |
1214 | shost->hostt->proc_name); | |
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | qedi = iscsi_host_priv(shost); | |
1219 | if (path_data->handle == QEDI_PATH_HANDLE) { | |
1220 | ret = qedi_data_avail(qedi, path_data->vlan_id); | |
1221 | goto set_path_exit; | |
1222 | } | |
1223 | ||
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); | |
1228 | ||
1229 | if (!is_valid_ether_addr(&path_data->mac_addr[0])) { | |
1230 | QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n"); | |
1231 | ret = -EIO; | |
1232 | goto set_path_exit; | |
1233 | } | |
1234 | ||
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]); | |
1237 | ||
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); | |
1244 | } | |
1245 | ||
1246 | if (path_data->pmtu != qedi->ll2_mtu) { | |
1247 | if (path_data->pmtu > JUMBO_MTU) { | |
1248 | ret = -EINVAL; | |
1249 | QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu); | |
1250 | goto set_path_exit; | |
1251 | } | |
1252 | ||
1253 | qedi_reset_host_mtu(qedi, path_data->pmtu); | |
1254 | qedi_ep->pmtu = qedi->ll2_mtu; | |
1255 | } | |
1256 | ||
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)) | |
1261 | port_id = 0; | |
1262 | } else { | |
1263 | port_id = 0; | |
1264 | } | |
1265 | ||
1266 | if (!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", | |
1271 | iscsi_cid); | |
1272 | ret = -ENOMEM; | |
1273 | goto set_path_exit; | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | qedi_ep->src_port = port_id; | |
1278 | ||
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; | |
1285 | ||
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); | |
1290 | } else { | |
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; | |
1296 | ||
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); | |
1301 | } | |
1302 | ||
1303 | INIT_WORK(&qedi_ep->offload_work, qedi_offload_work); | |
1304 | queue_work(qedi->offload_thread, &qedi_ep->offload_work); | |
1305 | ||
1306 | ret = 0; | |
1307 | ||
1308 | set_path_exit: | |
1309 | return ret; | |
1310 | } | |
1311 | ||
1312 | static umode_t qedi_attr_is_visible(int param_type, int param) | |
1313 | { | |
1314 | switch (param_type) { | |
1315 | case ISCSI_HOST_PARAM: | |
1316 | switch (param) { | |
1317 | case ISCSI_HOST_PARAM_NETDEV_NAME: | |
1318 | case ISCSI_HOST_PARAM_HWADDRESS: | |
1319 | case ISCSI_HOST_PARAM_IPADDRESS: | |
1320 | return 0444; | |
1321 | default: | |
1322 | return 0; | |
1323 | } | |
1324 | case ISCSI_PARAM: | |
1325 | switch (param) { | |
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: | |
1360 | return 0444; | |
1361 | default: | |
1362 | return 0; | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | return 0; | |
1367 | } | |
1368 | ||
1369 | static void qedi_cleanup_task(struct iscsi_task *task) | |
1370 | { | |
1371 | if (!task->sc || task->state == ISCSI_TASK_PENDING) { | |
1372 | QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n", | |
6dc618cd | 1373 | refcount_read(&task->refcount)); |
ace7f46b MR |
1374 | return; |
1375 | } | |
1376 | ||
1377 | qedi_iscsi_unmap_sg_list(task->dd_data); | |
1378 | } | |
1379 | ||
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, | |
1407 | }; | |
1408 | ||
1409 | void qedi_start_conn_recovery(struct qedi_ctx *qedi, | |
1410 | struct qedi_conn *qedi_conn) | |
1411 | { | |
1412 | struct iscsi_cls_session *cls_sess; | |
1413 | struct iscsi_cls_conn *cls_conn; | |
1414 | struct iscsi_conn *conn; | |
1415 | ||
1416 | cls_conn = qedi_conn->cls_conn; | |
1417 | conn = cls_conn->dd_data; | |
1418 | cls_sess = iscsi_conn_to_session(cls_conn); | |
1419 | ||
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); | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | static const struct { | |
1431 | enum iscsi_error_types error_code; | |
1432 | char *err_string; | |
1433 | } qedi_iscsi_error[] = { | |
1434 | { ISCSI_STATUS_NONE, | |
1435 | "tcp_error none" | |
1436 | }, | |
1437 | { ISCSI_CONN_ERROR_TASK_CID_MISMATCH, | |
1438 | "task cid mismatch" | |
1439 | }, | |
1440 | { ISCSI_CONN_ERROR_TASK_NOT_VALID, | |
1441 | "invalid task" | |
1442 | }, | |
1443 | { ISCSI_CONN_ERROR_RQ_RING_IS_FULL, | |
1444 | "rq ring full" | |
1445 | }, | |
1446 | { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL, | |
1447 | "cmdq ring full" | |
1448 | }, | |
1449 | { ISCSI_CONN_ERROR_HQE_CACHING_FAILED, | |
1450 | "sge caching failed" | |
1451 | }, | |
1452 | { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR, | |
1453 | "hdr digest error" | |
1454 | }, | |
1455 | { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR, | |
1456 | "local cmpl error" | |
1457 | }, | |
1458 | { ISCSI_CONN_ERROR_DATA_OVERRUN, | |
1459 | "invalid task" | |
1460 | }, | |
1461 | { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR, | |
1462 | "out of sge error" | |
1463 | }, | |
1464 | { ISCSI_CONN_ERROR_TCP_SEG_PROC_IP_OPTIONS_ERROR, | |
1465 | "tcp seg ip options error" | |
1466 | }, | |
1467 | { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR, | |
1468 | "tcp ip fragment error" | |
1469 | }, | |
1470 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN, | |
1471 | "AHS len protocol error" | |
1472 | }, | |
1473 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE, | |
1474 | "itt out of range error" | |
1475 | }, | |
1476 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE, | |
1477 | "data seg more than pdu size" | |
1478 | }, | |
1479 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE, | |
1480 | "invalid opcode" | |
1481 | }, | |
1482 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE, | |
1483 | "invalid opcode before update" | |
1484 | }, | |
1485 | { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL, | |
1486 | "unexpected opcode" | |
1487 | }, | |
1488 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA, | |
1489 | "r2t carries no data" | |
1490 | }, | |
1491 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN, | |
1492 | "data sn error" | |
1493 | }, | |
1494 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT, | |
1495 | "data TTT error" | |
1496 | }, | |
1497 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT, | |
1498 | "r2t TTT error" | |
1499 | }, | |
1500 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET, | |
1501 | "buffer offset error" | |
1502 | }, | |
1503 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO, | |
1504 | "buffer offset ooo" | |
1505 | }, | |
1506 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN, | |
1507 | "data seg len 0" | |
1508 | }, | |
1509 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0, | |
1510 | "data xer len error" | |
1511 | }, | |
1512 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1, | |
1513 | "data xer len1 error" | |
1514 | }, | |
1515 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2, | |
1516 | "data xer len2 error" | |
1517 | }, | |
1518 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN, | |
1519 | "protocol lun error" | |
1520 | }, | |
1521 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO, | |
1522 | "f bit zero error" | |
1523 | }, | |
1524 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN, | |
1525 | "exp stat sn error" | |
1526 | }, | |
1527 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO, | |
1528 | "dsl not zero error" | |
1529 | }, | |
1530 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL, | |
1531 | "invalid dsl" | |
1532 | }, | |
1533 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG, | |
1534 | "data seg len too big" | |
1535 | }, | |
1536 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT, | |
1537 | "outstanding r2t count error" | |
1538 | }, | |
1539 | { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH, | |
1540 | "sense datalen error" | |
1541 | }, | |
1542 | }; | |
1543 | ||
1544 | char *qedi_get_iscsi_error(enum iscsi_error_types err_code) | |
1545 | { | |
1546 | int i; | |
1547 | char *msg = NULL; | |
1548 | ||
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; | |
1552 | break; | |
1553 | } | |
1554 | } | |
1555 | return msg; | |
1556 | } | |
1557 | ||
1558 | void qedi_process_iscsi_error(struct qedi_endpoint *ep, struct async_data *data) | |
1559 | { | |
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"; | |
1565 | char *message; | |
1566 | int need_recovery = 0; | |
1567 | u32 err_mask = 0; | |
1568 | char *msg; | |
1569 | ||
1570 | if (!ep) | |
1571 | return; | |
1572 | ||
1573 | qedi_conn = ep->conn; | |
1574 | if (!qedi_conn) | |
1575 | return; | |
1576 | ||
1577 | qedi = ep->qedi; | |
1578 | ||
1579 | QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n", | |
1580 | data->error_code); | |
1581 | ||
1582 | if (err_mask) { | |
1583 | need_recovery = 0; | |
1584 | message = warn_notice; | |
1585 | } else { | |
1586 | need_recovery = 1; | |
1587 | message = error_notice; | |
1588 | } | |
1589 | ||
1590 | msg = qedi_get_iscsi_error(data->error_code); | |
1591 | if (!msg) { | |
1592 | need_recovery = 0; | |
1593 | msg = unknown_msg; | |
1594 | } | |
1595 | ||
1596 | iscsi_conn_printk(KERN_ALERT, | |
1597 | qedi_conn->cls_conn->dd_data, | |
1598 | "qedi: %s - %s\n", message, msg); | |
1599 | ||
1600 | if (need_recovery) | |
1601 | qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); | |
1602 | } | |
1603 | ||
1604 | void qedi_process_tcp_error(struct qedi_endpoint *ep, struct async_data *data) | |
1605 | { | |
1606 | struct qedi_conn *qedi_conn; | |
1607 | ||
1608 | if (!ep) | |
1609 | return; | |
1610 | ||
1611 | qedi_conn = ep->conn; | |
1612 | if (!qedi_conn) | |
1613 | return; | |
1614 | ||
1615 | QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n", | |
1616 | data->error_code); | |
1617 | ||
1618 | qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); | |
1619 | } |