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3287e96a | 1 | // SPDX-License-Identifier: GPL-2.0-only |
ace7f46b MR |
2 | /* |
3 | * QLogic iSCSI Offload Driver | |
4 | * Copyright (c) 2016 Cavium Inc. | |
ace7f46b MR |
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, 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 | 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, | |
b6a05c82 | 48 | .eh_timed_out = iscsi_eh_cmd_timed_out, |
ace7f46b MR |
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, | |
d0788a52 | 59 | .dma_boundary = QEDI_HW_DMA_BOUNDARY, |
ace7f46b | 60 | .cmd_per_lun = 128, |
ace7f46b MR |
61 | .shost_attrs = qedi_shost_attrs, |
62 | }; | |
63 | ||
64 | static void qedi_conn_free_login_resources(struct qedi_ctx *qedi, | |
65 | struct qedi_conn *qedi_conn) | |
66 | { | |
67 | if (qedi_conn->gen_pdu.resp_bd_tbl) { | |
68 | dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, | |
69 | qedi_conn->gen_pdu.resp_bd_tbl, | |
70 | qedi_conn->gen_pdu.resp_bd_dma); | |
71 | qedi_conn->gen_pdu.resp_bd_tbl = NULL; | |
72 | } | |
73 | ||
74 | if (qedi_conn->gen_pdu.req_bd_tbl) { | |
75 | dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, | |
76 | qedi_conn->gen_pdu.req_bd_tbl, | |
77 | qedi_conn->gen_pdu.req_bd_dma); | |
78 | qedi_conn->gen_pdu.req_bd_tbl = NULL; | |
79 | } | |
80 | ||
81 | if (qedi_conn->gen_pdu.resp_buf) { | |
82 | dma_free_coherent(&qedi->pdev->dev, | |
83 | ISCSI_DEF_MAX_RECV_SEG_LEN, | |
84 | qedi_conn->gen_pdu.resp_buf, | |
85 | qedi_conn->gen_pdu.resp_dma_addr); | |
86 | qedi_conn->gen_pdu.resp_buf = NULL; | |
87 | } | |
88 | ||
89 | if (qedi_conn->gen_pdu.req_buf) { | |
90 | dma_free_coherent(&qedi->pdev->dev, | |
91 | ISCSI_DEF_MAX_RECV_SEG_LEN, | |
92 | qedi_conn->gen_pdu.req_buf, | |
93 | qedi_conn->gen_pdu.req_dma_addr); | |
94 | qedi_conn->gen_pdu.req_buf = NULL; | |
95 | } | |
96 | } | |
97 | ||
98 | static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi, | |
99 | struct qedi_conn *qedi_conn) | |
100 | { | |
101 | qedi_conn->gen_pdu.req_buf = | |
102 | dma_alloc_coherent(&qedi->pdev->dev, | |
103 | ISCSI_DEF_MAX_RECV_SEG_LEN, | |
104 | &qedi_conn->gen_pdu.req_dma_addr, | |
105 | GFP_KERNEL); | |
106 | if (!qedi_conn->gen_pdu.req_buf) | |
107 | goto login_req_buf_failure; | |
108 | ||
109 | qedi_conn->gen_pdu.req_buf_size = 0; | |
110 | qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf; | |
111 | ||
112 | qedi_conn->gen_pdu.resp_buf = | |
113 | dma_alloc_coherent(&qedi->pdev->dev, | |
114 | ISCSI_DEF_MAX_RECV_SEG_LEN, | |
115 | &qedi_conn->gen_pdu.resp_dma_addr, | |
116 | GFP_KERNEL); | |
117 | if (!qedi_conn->gen_pdu.resp_buf) | |
118 | goto login_resp_buf_failure; | |
119 | ||
120 | qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
121 | qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf; | |
122 | ||
123 | qedi_conn->gen_pdu.req_bd_tbl = | |
124 | dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, | |
125 | &qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL); | |
126 | if (!qedi_conn->gen_pdu.req_bd_tbl) | |
127 | goto login_req_bd_tbl_failure; | |
128 | ||
129 | qedi_conn->gen_pdu.resp_bd_tbl = | |
130 | dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, | |
131 | &qedi_conn->gen_pdu.resp_bd_dma, | |
132 | GFP_KERNEL); | |
133 | if (!qedi_conn->gen_pdu.resp_bd_tbl) | |
134 | goto login_resp_bd_tbl_failure; | |
135 | ||
136 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS, | |
137 | "Allocation successful, cid=0x%x\n", | |
138 | qedi_conn->iscsi_conn_id); | |
139 | return 0; | |
140 | ||
141 | login_resp_bd_tbl_failure: | |
142 | dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, | |
143 | qedi_conn->gen_pdu.req_bd_tbl, | |
144 | qedi_conn->gen_pdu.req_bd_dma); | |
145 | qedi_conn->gen_pdu.req_bd_tbl = NULL; | |
146 | ||
147 | login_req_bd_tbl_failure: | |
148 | dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, | |
149 | qedi_conn->gen_pdu.resp_buf, | |
150 | qedi_conn->gen_pdu.resp_dma_addr); | |
151 | qedi_conn->gen_pdu.resp_buf = NULL; | |
152 | login_resp_buf_failure: | |
153 | dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, | |
154 | qedi_conn->gen_pdu.req_buf, | |
155 | qedi_conn->gen_pdu.req_dma_addr); | |
156 | qedi_conn->gen_pdu.req_buf = NULL; | |
157 | login_req_buf_failure: | |
158 | iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data, | |
159 | "login resource alloc failed!!\n"); | |
160 | return -ENOMEM; | |
161 | } | |
162 | ||
163 | static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi, | |
164 | struct iscsi_session *session) | |
165 | { | |
166 | int i; | |
167 | ||
168 | for (i = 0; i < session->cmds_max; i++) { | |
169 | struct iscsi_task *task = session->cmds[i]; | |
170 | struct qedi_cmd *cmd = task->dd_data; | |
171 | ||
172 | if (cmd->io_tbl.sge_tbl) | |
173 | dma_free_coherent(&qedi->pdev->dev, | |
174 | QEDI_ISCSI_MAX_BDS_PER_CMD * | |
be086e7c | 175 | sizeof(struct scsi_sge), |
ace7f46b MR |
176 | cmd->io_tbl.sge_tbl, |
177 | cmd->io_tbl.sge_tbl_dma); | |
178 | ||
179 | if (cmd->sense_buffer) | |
180 | dma_free_coherent(&qedi->pdev->dev, | |
181 | SCSI_SENSE_BUFFERSIZE, | |
182 | cmd->sense_buffer, | |
183 | cmd->sense_buffer_dma); | |
184 | } | |
185 | } | |
186 | ||
187 | static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session, | |
188 | struct qedi_cmd *cmd) | |
189 | { | |
190 | struct qedi_io_bdt *io = &cmd->io_tbl; | |
be086e7c | 191 | struct scsi_sge *sge; |
ace7f46b MR |
192 | |
193 | io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev, | |
194 | QEDI_ISCSI_MAX_BDS_PER_CMD * | |
195 | sizeof(*sge), | |
196 | &io->sge_tbl_dma, GFP_KERNEL); | |
197 | if (!io->sge_tbl) { | |
198 | iscsi_session_printk(KERN_ERR, session, | |
199 | "Could not allocate BD table.\n"); | |
200 | return -ENOMEM; | |
201 | } | |
202 | ||
203 | io->sge_valid = 0; | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static int qedi_setup_cmd_pool(struct qedi_ctx *qedi, | |
208 | struct iscsi_session *session) | |
209 | { | |
210 | int i; | |
211 | ||
212 | for (i = 0; i < session->cmds_max; i++) { | |
213 | struct iscsi_task *task = session->cmds[i]; | |
214 | struct qedi_cmd *cmd = task->dd_data; | |
215 | ||
216 | task->hdr = &cmd->hdr; | |
217 | task->hdr_max = sizeof(struct iscsi_hdr); | |
218 | ||
219 | if (qedi_alloc_sget(qedi, session, cmd)) | |
220 | goto free_sgets; | |
221 | ||
222 | cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev, | |
223 | SCSI_SENSE_BUFFERSIZE, | |
224 | &cmd->sense_buffer_dma, | |
225 | GFP_KERNEL); | |
226 | if (!cmd->sense_buffer) | |
227 | goto free_sgets; | |
228 | } | |
229 | ||
230 | return 0; | |
231 | ||
232 | free_sgets: | |
233 | qedi_destroy_cmd_pool(qedi, session); | |
234 | return -ENOMEM; | |
235 | } | |
236 | ||
237 | static struct iscsi_cls_session * | |
238 | qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, | |
239 | u16 qdepth, uint32_t initial_cmdsn) | |
240 | { | |
241 | struct Scsi_Host *shost; | |
242 | struct iscsi_cls_session *cls_session; | |
243 | struct qedi_ctx *qedi; | |
244 | struct qedi_endpoint *qedi_ep; | |
245 | ||
246 | if (!ep) | |
247 | return NULL; | |
248 | ||
249 | qedi_ep = ep->dd_data; | |
250 | shost = qedi_ep->qedi->shost; | |
251 | qedi = iscsi_host_priv(shost); | |
252 | ||
253 | if (cmds_max > qedi->max_sqes) | |
254 | cmds_max = qedi->max_sqes; | |
255 | else if (cmds_max < QEDI_SQ_WQES_MIN) | |
256 | cmds_max = QEDI_SQ_WQES_MIN; | |
257 | ||
258 | cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost, | |
259 | cmds_max, 0, sizeof(struct qedi_cmd), | |
260 | initial_cmdsn, ISCSI_MAX_TARGET); | |
261 | if (!cls_session) { | |
262 | QEDI_ERR(&qedi->dbg_ctx, | |
263 | "Failed to setup session for ep=%p\n", qedi_ep); | |
264 | return NULL; | |
265 | } | |
266 | ||
267 | if (qedi_setup_cmd_pool(qedi, cls_session->dd_data)) { | |
268 | QEDI_ERR(&qedi->dbg_ctx, | |
269 | "Failed to setup cmd pool for ep=%p\n", qedi_ep); | |
270 | goto session_teardown; | |
271 | } | |
272 | ||
273 | return cls_session; | |
274 | ||
275 | session_teardown: | |
276 | iscsi_session_teardown(cls_session); | |
277 | return NULL; | |
278 | } | |
279 | ||
280 | static void qedi_session_destroy(struct iscsi_cls_session *cls_session) | |
281 | { | |
282 | struct iscsi_session *session = cls_session->dd_data; | |
283 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); | |
284 | struct qedi_ctx *qedi = iscsi_host_priv(shost); | |
285 | ||
286 | qedi_destroy_cmd_pool(qedi, session); | |
287 | iscsi_session_teardown(cls_session); | |
288 | } | |
289 | ||
290 | static struct iscsi_cls_conn * | |
291 | qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid) | |
292 | { | |
293 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); | |
294 | struct qedi_ctx *qedi = iscsi_host_priv(shost); | |
295 | struct iscsi_cls_conn *cls_conn; | |
296 | struct qedi_conn *qedi_conn; | |
297 | struct iscsi_conn *conn; | |
298 | ||
299 | cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn), | |
300 | cid); | |
301 | if (!cls_conn) { | |
302 | QEDI_ERR(&qedi->dbg_ctx, | |
303 | "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n", | |
304 | cid, cls_session); | |
305 | return NULL; | |
306 | } | |
307 | ||
308 | conn = cls_conn->dd_data; | |
309 | qedi_conn = conn->dd_data; | |
310 | qedi_conn->cls_conn = cls_conn; | |
311 | qedi_conn->qedi = qedi; | |
312 | qedi_conn->ep = NULL; | |
313 | qedi_conn->active_cmd_count = 0; | |
314 | INIT_LIST_HEAD(&qedi_conn->active_cmd_list); | |
315 | spin_lock_init(&qedi_conn->list_lock); | |
316 | ||
317 | if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) { | |
318 | iscsi_conn_printk(KERN_ALERT, conn, | |
319 | "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n", | |
320 | cid, cls_session); | |
321 | goto free_conn; | |
322 | } | |
323 | ||
324 | return cls_conn; | |
325 | ||
326 | free_conn: | |
327 | iscsi_conn_teardown(cls_conn); | |
328 | return NULL; | |
329 | } | |
330 | ||
331 | void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) | |
332 | { | |
333 | iscsi_block_session(cls_session); | |
334 | } | |
335 | ||
336 | void qedi_mark_device_available(struct iscsi_cls_session *cls_session) | |
337 | { | |
338 | iscsi_unblock_session(cls_session); | |
339 | } | |
340 | ||
341 | static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, | |
342 | struct qedi_conn *qedi_conn) | |
343 | { | |
344 | u32 iscsi_cid = qedi_conn->iscsi_conn_id; | |
345 | ||
346 | if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) { | |
347 | iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, | |
348 | "conn bind - entry #%d not free\n", | |
349 | iscsi_cid); | |
350 | return -EBUSY; | |
351 | } | |
352 | ||
353 | qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn; | |
354 | return 0; | |
355 | } | |
356 | ||
357 | struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid) | |
358 | { | |
359 | if (!qedi->cid_que.conn_cid_tbl) { | |
360 | QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n"); | |
361 | return NULL; | |
362 | ||
363 | } else if (iscsi_cid >= qedi->max_active_conns) { | |
364 | QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid); | |
365 | return NULL; | |
366 | } | |
367 | return qedi->cid_que.conn_cid_tbl[iscsi_cid]; | |
368 | } | |
369 | ||
370 | static int qedi_conn_bind(struct iscsi_cls_session *cls_session, | |
371 | struct iscsi_cls_conn *cls_conn, | |
372 | u64 transport_fd, int is_leading) | |
373 | { | |
374 | struct iscsi_conn *conn = cls_conn->dd_data; | |
375 | struct qedi_conn *qedi_conn = conn->dd_data; | |
376 | struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); | |
377 | struct qedi_ctx *qedi = iscsi_host_priv(shost); | |
378 | struct qedi_endpoint *qedi_ep; | |
379 | struct iscsi_endpoint *ep; | |
380 | ||
381 | ep = iscsi_lookup_endpoint(transport_fd); | |
382 | if (!ep) | |
383 | return -EINVAL; | |
384 | ||
385 | qedi_ep = ep->dd_data; | |
386 | if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) || | |
387 | (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) | |
388 | return -EINVAL; | |
389 | ||
390 | if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) | |
391 | return -EINVAL; | |
392 | ||
393 | qedi_ep->conn = qedi_conn; | |
394 | qedi_conn->ep = qedi_ep; | |
395 | qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid; | |
396 | qedi_conn->fw_cid = qedi_ep->fw_cid; | |
397 | qedi_conn->cmd_cleanup_req = 0; | |
398 | qedi_conn->cmd_cleanup_cmpl = 0; | |
399 | ||
400 | if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) | |
401 | return -EINVAL; | |
402 | ||
403 | spin_lock_init(&qedi_conn->tmf_work_lock); | |
404 | INIT_LIST_HEAD(&qedi_conn->tmf_work_list); | |
405 | init_waitqueue_head(&qedi_conn->wait_queue); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, | |
410 | struct qedi_conn *qedi_conn) | |
411 | { | |
412 | struct qed_iscsi_params_update *conn_info; | |
413 | struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn; | |
414 | struct iscsi_conn *conn = cls_conn->dd_data; | |
415 | struct qedi_endpoint *qedi_ep; | |
416 | int rval; | |
417 | ||
418 | qedi_ep = qedi_conn->ep; | |
419 | ||
420 | conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); | |
421 | if (!conn_info) { | |
422 | QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n"); | |
423 | return -ENOMEM; | |
424 | } | |
425 | ||
426 | conn_info->update_flag = 0; | |
427 | ||
428 | if (conn->hdrdgst_en) | |
429 | SET_FIELD(conn_info->update_flag, | |
430 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true); | |
431 | if (conn->datadgst_en) | |
432 | SET_FIELD(conn_info->update_flag, | |
433 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true); | |
434 | if (conn->session->initial_r2t_en) | |
435 | SET_FIELD(conn_info->update_flag, | |
436 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T, | |
437 | true); | |
438 | if (conn->session->imm_data_en) | |
439 | SET_FIELD(conn_info->update_flag, | |
440 | ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, | |
441 | true); | |
442 | ||
443 | conn_info->max_seq_size = conn->session->max_burst; | |
444 | conn_info->max_recv_pdu_length = conn->max_recv_dlength; | |
445 | conn_info->max_send_pdu_length = conn->max_xmit_dlength; | |
446 | conn_info->first_seq_length = conn->session->first_burst; | |
447 | conn_info->exp_stat_sn = conn->exp_statsn; | |
448 | ||
449 | rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle, | |
450 | conn_info); | |
451 | if (rval) { | |
452 | rval = -ENXIO; | |
453 | QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n"); | |
ace7f46b MR |
454 | } |
455 | ||
456 | kfree(conn_info); | |
ace7f46b MR |
457 | return rval; |
458 | } | |
459 | ||
460 | static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en) | |
461 | { | |
462 | u16 mss = 0; | |
463 | u16 hdrs = TCP_HDR_LEN; | |
464 | ||
465 | if (is_ipv6) | |
466 | hdrs += IPV6_HDR_LEN; | |
467 | else | |
468 | hdrs += IPV4_HDR_LEN; | |
469 | ||
ace7f46b MR |
470 | mss = pmtu - hdrs; |
471 | ||
ace7f46b MR |
472 | if (!mss) |
473 | mss = DEF_MSS; | |
474 | ||
475 | return mss; | |
476 | } | |
477 | ||
478 | static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep) | |
479 | { | |
480 | struct qedi_ctx *qedi = qedi_ep->qedi; | |
481 | struct qed_iscsi_params_offload *conn_info; | |
482 | int rval; | |
483 | int i; | |
484 | ||
485 | conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); | |
486 | if (!conn_info) { | |
487 | QEDI_ERR(&qedi->dbg_ctx, | |
488 | "Failed to allocate memory ep=%p\n", qedi_ep); | |
489 | return -ENOMEM; | |
490 | } | |
491 | ||
492 | ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac); | |
493 | ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac); | |
494 | ||
495 | conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]); | |
496 | conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]); | |
497 | ||
498 | if (qedi_ep->ip_type == TCP_IPV4) { | |
499 | conn_info->ip_version = 0; | |
500 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
501 | "After ntohl: src_addr=%pI4, dst_addr=%pI4\n", | |
502 | qedi_ep->src_addr, qedi_ep->dst_addr); | |
503 | } else { | |
504 | for (i = 1; i < 4; i++) { | |
505 | conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]); | |
506 | conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]); | |
507 | } | |
508 | ||
509 | conn_info->ip_version = 1; | |
510 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
511 | "After ntohl: src_addr=%pI6, dst_addr=%pI6\n", | |
512 | qedi_ep->src_addr, qedi_ep->dst_addr); | |
513 | } | |
514 | ||
515 | conn_info->src.port = qedi_ep->src_port; | |
516 | conn_info->dst.port = qedi_ep->dst_port; | |
517 | ||
518 | conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE; | |
519 | conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma; | |
520 | conn_info->vlan_id = qedi_ep->vlan_id; | |
521 | ||
522 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1); | |
523 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1); | |
524 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1); | |
525 | SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1); | |
526 | ||
42d7c10f | 527 | conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues); |
ace7f46b MR |
528 | |
529 | conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT; | |
530 | conn_info->dup_ack_theshold = 3; | |
531 | conn_info->rcv_wnd = 65535; | |
ace7f46b MR |
532 | |
533 | conn_info->ss_thresh = 65535; | |
534 | conn_info->srtt = 300; | |
535 | conn_info->rtt_var = 150; | |
536 | conn_info->flow_label = 0; | |
537 | conn_info->ka_timeout = DEF_KA_TIMEOUT; | |
538 | conn_info->ka_interval = DEF_KA_INTERVAL; | |
539 | conn_info->max_rt_time = DEF_MAX_RT_TIME; | |
540 | conn_info->ttl = DEF_TTL; | |
541 | conn_info->tos_or_tc = DEF_TOS; | |
542 | conn_info->remote_port = qedi_ep->dst_port; | |
543 | conn_info->local_port = qedi_ep->src_port; | |
544 | ||
545 | conn_info->mss = qedi_calc_mss(qedi_ep->pmtu, | |
546 | (qedi_ep->ip_type == TCP_IPV6), | |
547 | 1, (qedi_ep->vlan_id != 0)); | |
548 | ||
da090917 | 549 | conn_info->cwnd = DEF_MAX_CWND * conn_info->mss; |
ace7f46b | 550 | conn_info->rcv_wnd_scale = 4; |
ace7f46b MR |
551 | conn_info->da_timeout_value = 200; |
552 | conn_info->ack_frequency = 2; | |
553 | ||
554 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
555 | "Default cq index [%d], mss [%d]\n", | |
556 | conn_info->default_cq, conn_info->mss); | |
557 | ||
558 | rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info); | |
559 | if (rval) | |
560 | QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n", | |
561 | rval, qedi_ep); | |
562 | ||
563 | kfree(conn_info); | |
564 | return rval; | |
565 | } | |
566 | ||
567 | static int qedi_conn_start(struct iscsi_cls_conn *cls_conn) | |
568 | { | |
569 | struct iscsi_conn *conn = cls_conn->dd_data; | |
570 | struct qedi_conn *qedi_conn = conn->dd_data; | |
571 | struct qedi_ctx *qedi; | |
572 | int rval; | |
573 | ||
574 | qedi = qedi_conn->qedi; | |
575 | ||
576 | rval = qedi_iscsi_update_conn(qedi, qedi_conn); | |
577 | if (rval) { | |
578 | iscsi_conn_printk(KERN_ALERT, conn, | |
bc136f4d | 579 | "conn_start: FW offload conn failed.\n"); |
ace7f46b MR |
580 | rval = -EINVAL; |
581 | goto start_err; | |
582 | } | |
583 | ||
584 | clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); | |
585 | qedi_conn->abrt_conn = 0; | |
586 | ||
587 | rval = iscsi_conn_start(cls_conn); | |
588 | if (rval) { | |
589 | iscsi_conn_printk(KERN_ALERT, conn, | |
bc136f4d | 590 | "iscsi_conn_start: FW offload conn failed!!\n"); |
ace7f46b MR |
591 | } |
592 | ||
593 | start_err: | |
594 | return rval; | |
595 | } | |
596 | ||
597 | static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn) | |
598 | { | |
599 | struct iscsi_conn *conn = cls_conn->dd_data; | |
600 | struct qedi_conn *qedi_conn = conn->dd_data; | |
601 | struct Scsi_Host *shost; | |
602 | struct qedi_ctx *qedi; | |
603 | ||
604 | shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); | |
605 | qedi = iscsi_host_priv(shost); | |
606 | ||
607 | qedi_conn_free_login_resources(qedi, qedi_conn); | |
608 | iscsi_conn_teardown(cls_conn); | |
609 | } | |
610 | ||
611 | static int qedi_ep_get_param(struct iscsi_endpoint *ep, | |
612 | enum iscsi_param param, char *buf) | |
613 | { | |
614 | struct qedi_endpoint *qedi_ep = ep->dd_data; | |
615 | int len; | |
616 | ||
617 | if (!qedi_ep) | |
618 | return -ENOTCONN; | |
619 | ||
620 | switch (param) { | |
621 | case ISCSI_PARAM_CONN_PORT: | |
622 | len = sprintf(buf, "%hu\n", qedi_ep->dst_port); | |
623 | break; | |
624 | case ISCSI_PARAM_CONN_ADDRESS: | |
625 | if (qedi_ep->ip_type == TCP_IPV4) | |
626 | len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr); | |
627 | else | |
628 | len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr); | |
629 | break; | |
630 | default: | |
631 | return -ENOTCONN; | |
632 | } | |
633 | ||
634 | return len; | |
635 | } | |
636 | ||
637 | static int qedi_host_get_param(struct Scsi_Host *shost, | |
638 | enum iscsi_host_param param, char *buf) | |
639 | { | |
640 | struct qedi_ctx *qedi; | |
641 | int len; | |
642 | ||
643 | qedi = iscsi_host_priv(shost); | |
644 | ||
645 | switch (param) { | |
646 | case ISCSI_HOST_PARAM_HWADDRESS: | |
647 | len = sysfs_format_mac(buf, qedi->mac, 6); | |
648 | break; | |
649 | case ISCSI_HOST_PARAM_NETDEV_NAME: | |
650 | len = sprintf(buf, "host%d\n", shost->host_no); | |
651 | break; | |
652 | case ISCSI_HOST_PARAM_IPADDRESS: | |
653 | if (qedi->ip_type == TCP_IPV4) | |
654 | len = sprintf(buf, "%pI4\n", qedi->src_ip); | |
655 | else | |
656 | len = sprintf(buf, "%pI6\n", qedi->src_ip); | |
657 | break; | |
658 | default: | |
659 | return iscsi_host_get_param(shost, param, buf); | |
660 | } | |
661 | ||
662 | return len; | |
663 | } | |
664 | ||
665 | static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn, | |
666 | struct iscsi_stats *stats) | |
667 | { | |
668 | struct iscsi_conn *conn = cls_conn->dd_data; | |
669 | struct qed_iscsi_stats iscsi_stats; | |
670 | struct Scsi_Host *shost; | |
671 | struct qedi_ctx *qedi; | |
672 | ||
673 | shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); | |
674 | qedi = iscsi_host_priv(shost); | |
675 | qedi_ops->get_stats(qedi->cdev, &iscsi_stats); | |
676 | ||
677 | conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt; | |
678 | conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt; | |
679 | conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt; | |
680 | conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt; | |
681 | conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt; | |
682 | ||
683 | stats->txdata_octets = conn->txdata_octets; | |
684 | stats->rxdata_octets = conn->rxdata_octets; | |
685 | stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; | |
686 | stats->dataout_pdus = conn->dataout_pdus_cnt; | |
687 | stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; | |
688 | stats->datain_pdus = conn->datain_pdus_cnt; | |
689 | stats->r2t_pdus = conn->r2t_pdus_cnt; | |
690 | stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; | |
691 | stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; | |
692 | stats->digest_err = 0; | |
693 | stats->timeout_err = 0; | |
694 | strcpy(stats->custom[0].desc, "eh_abort_cnt"); | |
695 | stats->custom[0].value = conn->eh_abort_cnt; | |
696 | stats->custom_length = 1; | |
697 | } | |
698 | ||
699 | static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn) | |
700 | { | |
be086e7c | 701 | struct scsi_sge *bd_tbl; |
ace7f46b | 702 | |
be086e7c | 703 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; |
ace7f46b MR |
704 | |
705 | bd_tbl->sge_addr.hi = | |
706 | (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); | |
707 | bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr; | |
708 | bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr - | |
709 | qedi_conn->gen_pdu.req_buf; | |
be086e7c | 710 | bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; |
ace7f46b MR |
711 | bd_tbl->sge_addr.hi = |
712 | (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); | |
713 | bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr; | |
714 | bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN; | |
ace7f46b MR |
715 | } |
716 | ||
717 | static int qedi_iscsi_send_generic_request(struct iscsi_task *task) | |
718 | { | |
719 | struct qedi_cmd *cmd = task->dd_data; | |
720 | struct qedi_conn *qedi_conn = cmd->conn; | |
721 | char *buf; | |
722 | int data_len; | |
723 | int rc = 0; | |
724 | ||
725 | qedi_iscsi_prep_generic_pdu_bd(qedi_conn); | |
726 | switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { | |
727 | case ISCSI_OP_LOGIN: | |
728 | qedi_send_iscsi_login(qedi_conn, task); | |
729 | break; | |
730 | case ISCSI_OP_NOOP_OUT: | |
731 | data_len = qedi_conn->gen_pdu.req_buf_size; | |
732 | buf = qedi_conn->gen_pdu.req_buf; | |
733 | if (data_len) | |
734 | rc = qedi_send_iscsi_nopout(qedi_conn, task, | |
735 | buf, data_len, 1); | |
736 | else | |
737 | rc = qedi_send_iscsi_nopout(qedi_conn, task, | |
738 | NULL, 0, 1); | |
739 | break; | |
740 | case ISCSI_OP_LOGOUT: | |
741 | rc = qedi_send_iscsi_logout(qedi_conn, task); | |
742 | break; | |
743 | case ISCSI_OP_SCSI_TMFUNC: | |
744 | rc = qedi_iscsi_abort_work(qedi_conn, task); | |
745 | break; | |
746 | case ISCSI_OP_TEXT: | |
747 | rc = qedi_send_iscsi_text(qedi_conn, task); | |
748 | break; | |
749 | default: | |
750 | iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, | |
751 | "unsupported op 0x%x\n", task->hdr->opcode); | |
752 | } | |
753 | ||
754 | return rc; | |
755 | } | |
756 | ||
757 | static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) | |
758 | { | |
759 | struct qedi_conn *qedi_conn = conn->dd_data; | |
760 | struct qedi_cmd *cmd = task->dd_data; | |
761 | ||
762 | memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN); | |
763 | ||
764 | qedi_conn->gen_pdu.req_buf_size = task->data_count; | |
765 | ||
766 | if (task->data_count) { | |
767 | memcpy(qedi_conn->gen_pdu.req_buf, task->data, | |
768 | task->data_count); | |
769 | qedi_conn->gen_pdu.req_wr_ptr = | |
770 | qedi_conn->gen_pdu.req_buf + task->data_count; | |
771 | } | |
772 | ||
773 | cmd->conn = conn->dd_data; | |
774 | cmd->scsi_cmd = NULL; | |
775 | return qedi_iscsi_send_generic_request(task); | |
776 | } | |
777 | ||
778 | static int qedi_task_xmit(struct iscsi_task *task) | |
779 | { | |
780 | struct iscsi_conn *conn = task->conn; | |
781 | struct qedi_conn *qedi_conn = conn->dd_data; | |
782 | struct qedi_cmd *cmd = task->dd_data; | |
783 | struct scsi_cmnd *sc = task->sc; | |
784 | ||
785 | cmd->state = 0; | |
786 | cmd->task = NULL; | |
787 | cmd->use_slowpath = false; | |
788 | cmd->conn = qedi_conn; | |
789 | cmd->task = task; | |
790 | cmd->io_cmd_in_list = false; | |
791 | INIT_LIST_HEAD(&cmd->io_cmd); | |
792 | ||
793 | if (!sc) | |
794 | return qedi_mtask_xmit(conn, task); | |
795 | ||
796 | cmd->scsi_cmd = sc; | |
797 | return qedi_iscsi_send_ioreq(task); | |
798 | } | |
799 | ||
800 | static struct iscsi_endpoint * | |
801 | qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, | |
802 | int non_blocking) | |
803 | { | |
804 | struct qedi_ctx *qedi; | |
805 | struct iscsi_endpoint *ep; | |
806 | struct qedi_endpoint *qedi_ep; | |
807 | struct sockaddr_in *addr; | |
808 | struct sockaddr_in6 *addr6; | |
ace7f46b MR |
809 | struct iscsi_path path_req; |
810 | u32 msg_type = ISCSI_KEVENT_IF_DOWN; | |
811 | u32 iscsi_cid = QEDI_CID_RESERVED; | |
812 | u16 len = 0; | |
813 | char *buf = NULL; | |
2c675218 | 814 | int ret, tmp; |
ace7f46b MR |
815 | |
816 | if (!shost) { | |
817 | ret = -ENXIO; | |
818 | QEDI_ERR(NULL, "shost is NULL\n"); | |
819 | return ERR_PTR(ret); | |
820 | } | |
821 | ||
bd571195 | 822 | if (qedi_do_not_recover) { |
ace7f46b MR |
823 | ret = -ENOMEM; |
824 | return ERR_PTR(ret); | |
825 | } | |
826 | ||
827 | qedi = iscsi_host_priv(shost); | |
ace7f46b MR |
828 | |
829 | if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) || | |
830 | test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { | |
831 | ret = -ENOMEM; | |
832 | return ERR_PTR(ret); | |
833 | } | |
834 | ||
835 | ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint)); | |
836 | if (!ep) { | |
837 | QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n"); | |
838 | ret = -ENOMEM; | |
839 | return ERR_PTR(ret); | |
840 | } | |
841 | qedi_ep = ep->dd_data; | |
842 | memset(qedi_ep, 0, sizeof(struct qedi_endpoint)); | |
843 | qedi_ep->state = EP_STATE_IDLE; | |
844 | qedi_ep->iscsi_cid = (u32)-1; | |
845 | qedi_ep->qedi = qedi; | |
846 | ||
847 | if (dst_addr->sa_family == AF_INET) { | |
848 | addr = (struct sockaddr_in *)dst_addr; | |
849 | memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr, | |
850 | sizeof(struct in_addr)); | |
851 | qedi_ep->dst_port = ntohs(addr->sin_port); | |
852 | qedi_ep->ip_type = TCP_IPV4; | |
853 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
854 | "dst_addr=%pI4, dst_port=%u\n", | |
855 | qedi_ep->dst_addr, qedi_ep->dst_port); | |
856 | } else if (dst_addr->sa_family == AF_INET6) { | |
857 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
858 | memcpy(qedi_ep->dst_addr, &addr6->sin6_addr, | |
859 | sizeof(struct in6_addr)); | |
860 | qedi_ep->dst_port = ntohs(addr6->sin6_port); | |
861 | qedi_ep->ip_type = TCP_IPV6; | |
862 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
863 | "dst_addr=%pI6, dst_port=%u\n", | |
864 | qedi_ep->dst_addr, qedi_ep->dst_port); | |
865 | } else { | |
866 | QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n"); | |
867 | } | |
868 | ||
869 | if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) { | |
870 | QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n"); | |
871 | ret = -ENXIO; | |
872 | goto ep_conn_exit; | |
873 | } | |
874 | ||
875 | ret = qedi_alloc_sq(qedi, qedi_ep); | |
876 | if (ret) | |
877 | goto ep_conn_exit; | |
878 | ||
879 | ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle, | |
880 | &qedi_ep->fw_cid, &qedi_ep->p_doorbell); | |
881 | ||
882 | if (ret) { | |
883 | QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n"); | |
884 | ret = -ENXIO; | |
885 | goto ep_free_sq; | |
886 | } | |
887 | ||
888 | iscsi_cid = qedi_ep->handle; | |
889 | qedi_ep->iscsi_cid = iscsi_cid; | |
890 | ||
891 | init_waitqueue_head(&qedi_ep->ofld_wait); | |
892 | init_waitqueue_head(&qedi_ep->tcp_ofld_wait); | |
893 | qedi_ep->state = EP_STATE_OFLDCONN_START; | |
894 | qedi->ep_tbl[iscsi_cid] = qedi_ep; | |
895 | ||
896 | buf = (char *)&path_req; | |
897 | len = sizeof(path_req); | |
898 | memset(&path_req, 0, len); | |
899 | ||
900 | msg_type = ISCSI_KEVENT_PATH_REQ; | |
901 | path_req.handle = (u64)qedi_ep->iscsi_cid; | |
902 | path_req.pmtu = qedi->ll2_mtu; | |
903 | qedi_ep->pmtu = qedi->ll2_mtu; | |
904 | if (qedi_ep->ip_type == TCP_IPV4) { | |
905 | memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr, | |
906 | sizeof(struct in_addr)); | |
907 | path_req.ip_addr_len = 4; | |
908 | } else { | |
909 | memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr, | |
910 | sizeof(struct in6_addr)); | |
911 | path_req.ip_addr_len = 16; | |
912 | } | |
913 | ||
914 | ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf, | |
915 | len); | |
916 | if (ret) { | |
917 | QEDI_ERR(&qedi->dbg_ctx, | |
918 | "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n", | |
919 | iscsi_cid, ret); | |
920 | goto ep_rel_conn; | |
921 | } | |
922 | ||
923 | atomic_inc(&qedi->num_offloads); | |
924 | return ep; | |
925 | ||
926 | ep_rel_conn: | |
927 | qedi->ep_tbl[iscsi_cid] = NULL; | |
2c675218 DC |
928 | tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); |
929 | if (tmp) | |
ace7f46b | 930 | QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n", |
2c675218 | 931 | tmp); |
ace7f46b MR |
932 | ep_free_sq: |
933 | qedi_free_sq(qedi, qedi_ep); | |
934 | ep_conn_exit: | |
935 | iscsi_destroy_endpoint(ep); | |
936 | return ERR_PTR(ret); | |
937 | } | |
938 | ||
939 | static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) | |
940 | { | |
941 | struct qedi_endpoint *qedi_ep; | |
942 | int ret = 0; | |
943 | ||
bd571195 | 944 | if (qedi_do_not_recover) |
ace7f46b MR |
945 | return 1; |
946 | ||
947 | qedi_ep = ep->dd_data; | |
948 | if (qedi_ep->state == EP_STATE_IDLE || | |
34a2ce88 | 949 | qedi_ep->state == EP_STATE_OFLDCONN_NONE || |
ace7f46b MR |
950 | qedi_ep->state == EP_STATE_OFLDCONN_FAILED) |
951 | return -1; | |
952 | ||
953 | if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL) | |
954 | ret = 1; | |
955 | ||
956 | ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait, | |
957 | QEDI_OFLD_WAIT_STATE(qedi_ep), | |
958 | msecs_to_jiffies(timeout_ms)); | |
959 | ||
960 | if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED) | |
961 | ret = -1; | |
962 | ||
963 | if (ret > 0) | |
964 | return 1; | |
965 | else if (!ret) | |
966 | return 0; | |
967 | else | |
968 | return ret; | |
969 | } | |
970 | ||
971 | static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) | |
972 | { | |
973 | struct qedi_cmd *cmd, *cmd_tmp; | |
974 | ||
975 | list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, | |
976 | io_cmd) { | |
977 | list_del_init(&cmd->io_cmd); | |
978 | qedi_conn->active_cmd_count--; | |
979 | } | |
980 | } | |
981 | ||
982 | static void qedi_ep_disconnect(struct iscsi_endpoint *ep) | |
983 | { | |
984 | struct qedi_endpoint *qedi_ep; | |
985 | struct qedi_conn *qedi_conn = NULL; | |
986 | struct iscsi_conn *conn = NULL; | |
987 | struct qedi_ctx *qedi; | |
988 | int ret = 0; | |
3252688f | 989 | int wait_delay; |
ace7f46b MR |
990 | int abrt_conn = 0; |
991 | int count = 10; | |
992 | ||
3252688f | 993 | wait_delay = 60 * HZ + DEF_MAX_RT_TIME; |
ace7f46b MR |
994 | qedi_ep = ep->dd_data; |
995 | qedi = qedi_ep->qedi; | |
996 | ||
f848bfd8 MR |
997 | if (qedi_ep->state == EP_STATE_OFLDCONN_START) |
998 | goto ep_exit_recover; | |
999 | ||
ace7f46b MR |
1000 | flush_work(&qedi_ep->offload_work); |
1001 | ||
1002 | if (qedi_ep->conn) { | |
1003 | qedi_conn = qedi_ep->conn; | |
1004 | conn = qedi_conn->cls_conn->dd_data; | |
1005 | iscsi_suspend_queue(conn); | |
1006 | abrt_conn = qedi_conn->abrt_conn; | |
1007 | ||
1008 | while (count--) { | |
1009 | if (!test_bit(QEDI_CONN_FW_CLEANUP, | |
1010 | &qedi_conn->flags)) { | |
1011 | break; | |
1012 | } | |
1013 | msleep(1000); | |
1014 | } | |
1015 | ||
1016 | if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { | |
bd571195 | 1017 | if (qedi_do_not_recover) { |
ace7f46b MR |
1018 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
1019 | "Do not recover cid=0x%x\n", | |
1020 | qedi_ep->iscsi_cid); | |
1021 | goto ep_exit_recover; | |
1022 | } | |
1023 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1024 | "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n", | |
1025 | qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state); | |
1026 | qedi_cleanup_active_cmd_list(qedi_conn); | |
1027 | goto ep_release_conn; | |
1028 | } | |
1029 | } | |
1030 | ||
bd571195 | 1031 | if (qedi_do_not_recover) |
ace7f46b MR |
1032 | goto ep_exit_recover; |
1033 | ||
1034 | switch (qedi_ep->state) { | |
1035 | case EP_STATE_OFLDCONN_START: | |
34a2ce88 | 1036 | case EP_STATE_OFLDCONN_NONE: |
ace7f46b MR |
1037 | goto ep_release_conn; |
1038 | case EP_STATE_OFLDCONN_FAILED: | |
1039 | break; | |
1040 | case EP_STATE_OFLDCONN_COMPL: | |
1041 | if (unlikely(!qedi_conn)) | |
1042 | break; | |
1043 | ||
1044 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1045 | "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n", | |
1046 | qedi_conn->active_cmd_count, abrt_conn, | |
1047 | qedi_ep->state, | |
1048 | qedi_ep->iscsi_cid, | |
1049 | qedi_ep->conn | |
1050 | ); | |
1051 | ||
1052 | if (!qedi_conn->active_cmd_count) | |
1053 | abrt_conn = 0; | |
1054 | else | |
1055 | abrt_conn = 1; | |
1056 | ||
1057 | if (abrt_conn) | |
1058 | qedi_clearsq(qedi, qedi_conn, NULL); | |
1059 | break; | |
1060 | default: | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | qedi_ep->state = EP_STATE_DISCONN_START; | |
1065 | ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn); | |
1066 | if (ret) { | |
1067 | QEDI_WARN(&qedi->dbg_ctx, | |
1068 | "destroy_conn failed returned %d\n", ret); | |
1069 | } else { | |
1070 | ret = wait_event_interruptible_timeout( | |
1071 | qedi_ep->tcp_ofld_wait, | |
1072 | (qedi_ep->state != | |
1073 | EP_STATE_DISCONN_START), | |
1074 | wait_delay); | |
1075 | if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) { | |
1076 | QEDI_WARN(&qedi->dbg_ctx, | |
1077 | "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n", | |
1078 | ret, wait_delay, qedi_ep->iscsi_cid); | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | ep_release_conn: | |
1083 | ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); | |
1084 | if (ret) | |
1085 | QEDI_WARN(&qedi->dbg_ctx, | |
1086 | "release_conn returned %d, cid=0x%x\n", | |
1087 | ret, qedi_ep->iscsi_cid); | |
1088 | ep_exit_recover: | |
1089 | qedi_ep->state = EP_STATE_IDLE; | |
1090 | qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL; | |
1091 | qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL; | |
1092 | qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port); | |
1093 | qedi_free_sq(qedi, qedi_ep); | |
1094 | ||
1095 | if (qedi_conn) | |
1096 | qedi_conn->ep = NULL; | |
1097 | ||
1098 | qedi_ep->conn = NULL; | |
1099 | qedi_ep->qedi = NULL; | |
1100 | atomic_dec(&qedi->num_offloads); | |
1101 | ||
1102 | iscsi_destroy_endpoint(ep); | |
1103 | } | |
1104 | ||
1105 | static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid) | |
1106 | { | |
1107 | struct qed_dev *cdev = qedi->cdev; | |
1108 | struct qedi_uio_dev *udev; | |
1109 | struct qedi_uio_ctrl *uctrl; | |
1110 | struct sk_buff *skb; | |
1111 | u32 len; | |
1112 | int rc = 0; | |
1113 | ||
1114 | udev = qedi->udev; | |
1115 | if (!udev) { | |
1116 | QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n"); | |
1117 | return -EINVAL; | |
1118 | } | |
1119 | ||
1120 | uctrl = (struct qedi_uio_ctrl *)udev->uctrl; | |
1121 | if (!uctrl) { | |
1122 | QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n"); | |
1123 | return -EINVAL; | |
1124 | } | |
1125 | ||
1126 | len = uctrl->host_tx_pkt_len; | |
1127 | if (!len) { | |
1128 | QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len); | |
1129 | return -EINVAL; | |
1130 | } | |
1131 | ||
1132 | skb = alloc_skb(len, GFP_ATOMIC); | |
1133 | if (!skb) { | |
1134 | QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n"); | |
1135 | return -EINVAL; | |
1136 | } | |
1137 | ||
1138 | skb_put(skb, len); | |
1139 | memcpy(skb->data, udev->tx_pkt, len); | |
1140 | skb->ip_summed = CHECKSUM_NONE; | |
1141 | ||
1142 | if (vlanid) | |
1143 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid); | |
1144 | ||
cac6f691 | 1145 | rc = qedi_ops->ll2->start_xmit(cdev, skb, 0); |
ace7f46b MR |
1146 | if (rc) { |
1147 | QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n", | |
1148 | rc); | |
1149 | kfree_skb(skb); | |
1150 | } | |
1151 | ||
1152 | uctrl->host_tx_pkt_len = 0; | |
1153 | uctrl->hw_tx_cons++; | |
1154 | ||
1155 | return rc; | |
1156 | } | |
1157 | ||
1158 | static void qedi_offload_work(struct work_struct *work) | |
1159 | { | |
1160 | struct qedi_endpoint *qedi_ep = | |
1161 | container_of(work, struct qedi_endpoint, offload_work); | |
1162 | struct qedi_ctx *qedi; | |
3252688f | 1163 | int wait_delay = 5 * HZ; |
ace7f46b MR |
1164 | int ret; |
1165 | ||
1166 | qedi = qedi_ep->qedi; | |
1167 | ||
1168 | ret = qedi_iscsi_offload_conn(qedi_ep); | |
1169 | if (ret) { | |
1170 | QEDI_ERR(&qedi->dbg_ctx, | |
1171 | "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n", | |
1172 | qedi_ep->iscsi_cid, qedi_ep, ret); | |
1173 | qedi_ep->state = EP_STATE_OFLDCONN_FAILED; | |
1174 | return; | |
1175 | } | |
1176 | ||
1177 | ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait, | |
1178 | (qedi_ep->state == | |
1179 | EP_STATE_OFLDCONN_COMPL), | |
1180 | wait_delay); | |
1181 | if ((ret <= 0) || (qedi_ep->state != EP_STATE_OFLDCONN_COMPL)) { | |
1182 | qedi_ep->state = EP_STATE_OFLDCONN_FAILED; | |
1183 | QEDI_ERR(&qedi->dbg_ctx, | |
1184 | "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n", | |
1185 | qedi_ep->iscsi_cid, qedi_ep); | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) | |
1190 | { | |
1191 | struct qedi_ctx *qedi; | |
1192 | struct qedi_endpoint *qedi_ep; | |
1193 | int ret = 0; | |
1194 | u32 iscsi_cid; | |
1195 | u16 port_id = 0; | |
1196 | ||
1197 | if (!shost) { | |
1198 | ret = -ENXIO; | |
1199 | QEDI_ERR(NULL, "shost is NULL\n"); | |
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | if (strcmp(shost->hostt->proc_name, "qedi")) { | |
1204 | ret = -ENXIO; | |
1205 | QEDI_ERR(NULL, "shost %s is invalid\n", | |
1206 | shost->hostt->proc_name); | |
1207 | return ret; | |
1208 | } | |
1209 | ||
1210 | qedi = iscsi_host_priv(shost); | |
1211 | if (path_data->handle == QEDI_PATH_HANDLE) { | |
1212 | ret = qedi_data_avail(qedi, path_data->vlan_id); | |
1213 | goto set_path_exit; | |
1214 | } | |
1215 | ||
1216 | iscsi_cid = (u32)path_data->handle; | |
1217 | qedi_ep = qedi->ep_tbl[iscsi_cid]; | |
0ea9314f | 1218 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
ace7f46b | 1219 | "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep); |
0ea9314f | 1220 | if (!qedi_ep) { |
1221 | ret = -EINVAL; | |
1222 | goto set_path_exit; | |
1223 | } | |
ace7f46b MR |
1224 | |
1225 | if (!is_valid_ether_addr(&path_data->mac_addr[0])) { | |
1226 | QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n"); | |
34a2ce88 | 1227 | qedi_ep->state = EP_STATE_OFLDCONN_NONE; |
ace7f46b MR |
1228 | ret = -EIO; |
1229 | goto set_path_exit; | |
1230 | } | |
1231 | ||
1232 | ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]); | |
1233 | ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]); | |
1234 | ||
1235 | qedi_ep->vlan_id = path_data->vlan_id; | |
1236 | if (path_data->pmtu < DEF_PATH_MTU) { | |
1237 | qedi_ep->pmtu = qedi->ll2_mtu; | |
1238 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, | |
1239 | "MTU cannot be %u, using default MTU %u\n", | |
1240 | path_data->pmtu, qedi_ep->pmtu); | |
1241 | } | |
1242 | ||
1243 | if (path_data->pmtu != qedi->ll2_mtu) { | |
1244 | if (path_data->pmtu > JUMBO_MTU) { | |
1245 | ret = -EINVAL; | |
1246 | QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu); | |
1247 | goto set_path_exit; | |
1248 | } | |
1249 | ||
1250 | qedi_reset_host_mtu(qedi, path_data->pmtu); | |
1251 | qedi_ep->pmtu = qedi->ll2_mtu; | |
1252 | } | |
1253 | ||
1254 | port_id = qedi_ep->src_port; | |
1255 | if (port_id >= QEDI_LOCAL_PORT_MIN && | |
1256 | port_id < QEDI_LOCAL_PORT_MAX) { | |
1257 | if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id)) | |
1258 | port_id = 0; | |
1259 | } else { | |
1260 | port_id = 0; | |
1261 | } | |
1262 | ||
1263 | if (!port_id) { | |
1264 | port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl); | |
1265 | if (port_id == QEDI_LOCAL_PORT_INVALID) { | |
1266 | QEDI_ERR(&qedi->dbg_ctx, | |
1267 | "Failed to allocate port id for iscsi_cid=0x%x\n", | |
1268 | iscsi_cid); | |
1269 | ret = -ENOMEM; | |
1270 | goto set_path_exit; | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | qedi_ep->src_port = port_id; | |
1275 | ||
1276 | if (qedi_ep->ip_type == TCP_IPV4) { | |
1277 | memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr, | |
1278 | sizeof(struct in_addr)); | |
1279 | memcpy(&qedi->src_ip[0], &path_data->src.v4_addr, | |
1280 | sizeof(struct in_addr)); | |
1281 | qedi->ip_type = TCP_IPV4; | |
1282 | ||
1283 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1284 | "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n", | |
1285 | qedi_ep->src_addr, qedi_ep->src_port, | |
1286 | qedi_ep->dst_addr, qedi_ep->dst_port); | |
1287 | } else { | |
1288 | memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr, | |
1289 | sizeof(struct in6_addr)); | |
1290 | memcpy(&qedi->src_ip[0], &path_data->src.v6_addr, | |
1291 | sizeof(struct in6_addr)); | |
1292 | qedi->ip_type = TCP_IPV6; | |
1293 | ||
1294 | QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, | |
1295 | "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n", | |
1296 | qedi_ep->src_addr, qedi_ep->src_port, | |
1297 | qedi_ep->dst_addr, qedi_ep->dst_port); | |
1298 | } | |
1299 | ||
1300 | INIT_WORK(&qedi_ep->offload_work, qedi_offload_work); | |
1301 | queue_work(qedi->offload_thread, &qedi_ep->offload_work); | |
1302 | ||
1303 | ret = 0; | |
1304 | ||
1305 | set_path_exit: | |
1306 | return ret; | |
1307 | } | |
1308 | ||
1309 | static umode_t qedi_attr_is_visible(int param_type, int param) | |
1310 | { | |
1311 | switch (param_type) { | |
1312 | case ISCSI_HOST_PARAM: | |
1313 | switch (param) { | |
1314 | case ISCSI_HOST_PARAM_NETDEV_NAME: | |
1315 | case ISCSI_HOST_PARAM_HWADDRESS: | |
1316 | case ISCSI_HOST_PARAM_IPADDRESS: | |
1317 | return 0444; | |
1318 | default: | |
1319 | return 0; | |
1320 | } | |
1321 | case ISCSI_PARAM: | |
1322 | switch (param) { | |
1323 | case ISCSI_PARAM_MAX_RECV_DLENGTH: | |
1324 | case ISCSI_PARAM_MAX_XMIT_DLENGTH: | |
1325 | case ISCSI_PARAM_HDRDGST_EN: | |
1326 | case ISCSI_PARAM_DATADGST_EN: | |
1327 | case ISCSI_PARAM_CONN_ADDRESS: | |
1328 | case ISCSI_PARAM_CONN_PORT: | |
1329 | case ISCSI_PARAM_EXP_STATSN: | |
1330 | case ISCSI_PARAM_PERSISTENT_ADDRESS: | |
1331 | case ISCSI_PARAM_PERSISTENT_PORT: | |
1332 | case ISCSI_PARAM_PING_TMO: | |
1333 | case ISCSI_PARAM_RECV_TMO: | |
1334 | case ISCSI_PARAM_INITIAL_R2T_EN: | |
1335 | case ISCSI_PARAM_MAX_R2T: | |
1336 | case ISCSI_PARAM_IMM_DATA_EN: | |
1337 | case ISCSI_PARAM_FIRST_BURST: | |
1338 | case ISCSI_PARAM_MAX_BURST: | |
1339 | case ISCSI_PARAM_PDU_INORDER_EN: | |
1340 | case ISCSI_PARAM_DATASEQ_INORDER_EN: | |
1341 | case ISCSI_PARAM_ERL: | |
1342 | case ISCSI_PARAM_TARGET_NAME: | |
1343 | case ISCSI_PARAM_TPGT: | |
1344 | case ISCSI_PARAM_USERNAME: | |
1345 | case ISCSI_PARAM_PASSWORD: | |
1346 | case ISCSI_PARAM_USERNAME_IN: | |
1347 | case ISCSI_PARAM_PASSWORD_IN: | |
1348 | case ISCSI_PARAM_FAST_ABORT: | |
1349 | case ISCSI_PARAM_ABORT_TMO: | |
1350 | case ISCSI_PARAM_LU_RESET_TMO: | |
1351 | case ISCSI_PARAM_TGT_RESET_TMO: | |
1352 | case ISCSI_PARAM_IFACE_NAME: | |
1353 | case ISCSI_PARAM_INITIATOR_NAME: | |
1354 | case ISCSI_PARAM_BOOT_ROOT: | |
1355 | case ISCSI_PARAM_BOOT_NIC: | |
1356 | case ISCSI_PARAM_BOOT_TARGET: | |
1357 | return 0444; | |
1358 | default: | |
1359 | return 0; | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
1366 | static void qedi_cleanup_task(struct iscsi_task *task) | |
1367 | { | |
1368 | if (!task->sc || task->state == ISCSI_TASK_PENDING) { | |
1369 | QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n", | |
6dc618cd | 1370 | refcount_read(&task->refcount)); |
ace7f46b MR |
1371 | return; |
1372 | } | |
1373 | ||
1374 | qedi_iscsi_unmap_sg_list(task->dd_data); | |
1375 | } | |
1376 | ||
1377 | struct iscsi_transport qedi_iscsi_transport = { | |
1378 | .owner = THIS_MODULE, | |
1379 | .name = QEDI_MODULE_NAME, | |
1380 | .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST | | |
1381 | CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO, | |
1382 | .create_session = qedi_session_create, | |
1383 | .destroy_session = qedi_session_destroy, | |
1384 | .create_conn = qedi_conn_create, | |
1385 | .bind_conn = qedi_conn_bind, | |
1386 | .start_conn = qedi_conn_start, | |
1387 | .stop_conn = iscsi_conn_stop, | |
1388 | .destroy_conn = qedi_conn_destroy, | |
1389 | .set_param = iscsi_set_param, | |
1390 | .get_ep_param = qedi_ep_get_param, | |
1391 | .get_conn_param = iscsi_conn_get_param, | |
1392 | .get_session_param = iscsi_session_get_param, | |
1393 | .get_host_param = qedi_host_get_param, | |
1394 | .send_pdu = iscsi_conn_send_pdu, | |
1395 | .get_stats = qedi_conn_get_stats, | |
1396 | .xmit_task = qedi_task_xmit, | |
1397 | .cleanup_task = qedi_cleanup_task, | |
1398 | .session_recovery_timedout = iscsi_session_recovery_timedout, | |
1399 | .ep_connect = qedi_ep_connect, | |
1400 | .ep_poll = qedi_ep_poll, | |
1401 | .ep_disconnect = qedi_ep_disconnect, | |
1402 | .set_path = qedi_set_path, | |
1403 | .attr_is_visible = qedi_attr_is_visible, | |
1404 | }; | |
1405 | ||
1406 | void qedi_start_conn_recovery(struct qedi_ctx *qedi, | |
1407 | struct qedi_conn *qedi_conn) | |
1408 | { | |
1409 | struct iscsi_cls_session *cls_sess; | |
1410 | struct iscsi_cls_conn *cls_conn; | |
1411 | struct iscsi_conn *conn; | |
1412 | ||
1413 | cls_conn = qedi_conn->cls_conn; | |
1414 | conn = cls_conn->dd_data; | |
1415 | cls_sess = iscsi_conn_to_session(cls_conn); | |
1416 | ||
1417 | if (iscsi_is_session_online(cls_sess)) { | |
1418 | qedi_conn->abrt_conn = 1; | |
1419 | QEDI_ERR(&qedi->dbg_ctx, | |
1420 | "Failing connection, state=0x%x, cid=0x%x\n", | |
1421 | conn->session->state, qedi_conn->iscsi_conn_id); | |
1422 | iscsi_conn_failure(qedi_conn->cls_conn->dd_data, | |
1423 | ISCSI_ERR_CONN_FAILED); | |
1424 | } | |
1425 | } | |
1426 | ||
1427 | static const struct { | |
1428 | enum iscsi_error_types error_code; | |
1429 | char *err_string; | |
1430 | } qedi_iscsi_error[] = { | |
1431 | { ISCSI_STATUS_NONE, | |
1432 | "tcp_error none" | |
1433 | }, | |
1434 | { ISCSI_CONN_ERROR_TASK_CID_MISMATCH, | |
1435 | "task cid mismatch" | |
1436 | }, | |
1437 | { ISCSI_CONN_ERROR_TASK_NOT_VALID, | |
1438 | "invalid task" | |
1439 | }, | |
1440 | { ISCSI_CONN_ERROR_RQ_RING_IS_FULL, | |
1441 | "rq ring full" | |
1442 | }, | |
1443 | { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL, | |
1444 | "cmdq ring full" | |
1445 | }, | |
1446 | { ISCSI_CONN_ERROR_HQE_CACHING_FAILED, | |
1447 | "sge caching failed" | |
1448 | }, | |
1449 | { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR, | |
1450 | "hdr digest error" | |
1451 | }, | |
1452 | { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR, | |
1453 | "local cmpl error" | |
1454 | }, | |
1455 | { ISCSI_CONN_ERROR_DATA_OVERRUN, | |
1456 | "invalid task" | |
1457 | }, | |
1458 | { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR, | |
1459 | "out of sge error" | |
1460 | }, | |
ace7f46b MR |
1461 | { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR, |
1462 | "tcp ip fragment error" | |
1463 | }, | |
1464 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN, | |
1465 | "AHS len protocol error" | |
1466 | }, | |
1467 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE, | |
1468 | "itt out of range error" | |
1469 | }, | |
1470 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE, | |
1471 | "data seg more than pdu size" | |
1472 | }, | |
1473 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE, | |
1474 | "invalid opcode" | |
1475 | }, | |
1476 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE, | |
1477 | "invalid opcode before update" | |
1478 | }, | |
1479 | { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL, | |
1480 | "unexpected opcode" | |
1481 | }, | |
1482 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA, | |
1483 | "r2t carries no data" | |
1484 | }, | |
1485 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN, | |
1486 | "data sn error" | |
1487 | }, | |
1488 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT, | |
1489 | "data TTT error" | |
1490 | }, | |
1491 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT, | |
1492 | "r2t TTT error" | |
1493 | }, | |
1494 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET, | |
1495 | "buffer offset error" | |
1496 | }, | |
1497 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO, | |
1498 | "buffer offset ooo" | |
1499 | }, | |
1500 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN, | |
1501 | "data seg len 0" | |
1502 | }, | |
1503 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0, | |
1504 | "data xer len error" | |
1505 | }, | |
1506 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1, | |
1507 | "data xer len1 error" | |
1508 | }, | |
1509 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2, | |
1510 | "data xer len2 error" | |
1511 | }, | |
1512 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN, | |
1513 | "protocol lun error" | |
1514 | }, | |
1515 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO, | |
1516 | "f bit zero error" | |
1517 | }, | |
1518 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN, | |
1519 | "exp stat sn error" | |
1520 | }, | |
1521 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO, | |
1522 | "dsl not zero error" | |
1523 | }, | |
1524 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL, | |
1525 | "invalid dsl" | |
1526 | }, | |
1527 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG, | |
1528 | "data seg len too big" | |
1529 | }, | |
1530 | { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT, | |
1531 | "outstanding r2t count error" | |
1532 | }, | |
1533 | { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH, | |
1534 | "sense datalen error" | |
1535 | }, | |
1536 | }; | |
1537 | ||
1538 | char *qedi_get_iscsi_error(enum iscsi_error_types err_code) | |
1539 | { | |
1540 | int i; | |
1541 | char *msg = NULL; | |
1542 | ||
1543 | for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) { | |
1544 | if (qedi_iscsi_error[i].error_code == err_code) { | |
1545 | msg = qedi_iscsi_error[i].err_string; | |
1546 | break; | |
1547 | } | |
1548 | } | |
1549 | return msg; | |
1550 | } | |
1551 | ||
da090917 TT |
1552 | void qedi_process_iscsi_error(struct qedi_endpoint *ep, |
1553 | struct iscsi_eqe_data *data) | |
ace7f46b MR |
1554 | { |
1555 | struct qedi_conn *qedi_conn; | |
1556 | struct qedi_ctx *qedi; | |
1557 | char warn_notice[] = "iscsi_warning"; | |
1558 | char error_notice[] = "iscsi_error"; | |
1559 | char unknown_msg[] = "Unknown error"; | |
1560 | char *message; | |
1561 | int need_recovery = 0; | |
1562 | u32 err_mask = 0; | |
1563 | char *msg; | |
1564 | ||
1565 | if (!ep) | |
1566 | return; | |
1567 | ||
1568 | qedi_conn = ep->conn; | |
1569 | if (!qedi_conn) | |
1570 | return; | |
1571 | ||
1572 | qedi = ep->qedi; | |
1573 | ||
1574 | QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n", | |
1575 | data->error_code); | |
1576 | ||
1577 | if (err_mask) { | |
1578 | need_recovery = 0; | |
1579 | message = warn_notice; | |
1580 | } else { | |
1581 | need_recovery = 1; | |
1582 | message = error_notice; | |
1583 | } | |
1584 | ||
1585 | msg = qedi_get_iscsi_error(data->error_code); | |
1586 | if (!msg) { | |
1587 | need_recovery = 0; | |
1588 | msg = unknown_msg; | |
1589 | } | |
1590 | ||
1591 | iscsi_conn_printk(KERN_ALERT, | |
1592 | qedi_conn->cls_conn->dd_data, | |
1593 | "qedi: %s - %s\n", message, msg); | |
1594 | ||
1595 | if (need_recovery) | |
1596 | qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); | |
1597 | } | |
1598 | ||
da090917 TT |
1599 | void qedi_process_tcp_error(struct qedi_endpoint *ep, |
1600 | struct iscsi_eqe_data *data) | |
ace7f46b MR |
1601 | { |
1602 | struct qedi_conn *qedi_conn; | |
1603 | ||
1604 | if (!ep) | |
1605 | return; | |
1606 | ||
1607 | qedi_conn = ep->conn; | |
1608 | if (!qedi_conn) | |
1609 | return; | |
1610 | ||
1611 | QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n", | |
1612 | data->error_code); | |
1613 | ||
1614 | qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); | |
1615 | } |