1 // SPDX-License-Identifier: GPL-2.0-only
3 * QLogic iSCSI Offload Driver
4 * Copyright (c) 2016 Cavium Inc.
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>
14 #include "qedi_iscsi.h"
17 int qedi_recover_all_conns(struct qedi_ctx *qedi)
19 struct qedi_conn *qedi_conn;
22 for (i = 0; i < qedi->max_active_conns; i++) {
23 qedi_conn = qedi_get_conn_from_id(qedi, i);
27 qedi_start_conn_recovery(qedi, qedi_conn);
33 static int qedi_eh_host_reset(struct scsi_cmnd *cmd)
35 struct Scsi_Host *shost = cmd->device->host;
36 struct qedi_ctx *qedi;
38 qedi = iscsi_host_priv(shost);
40 return qedi_recover_all_conns(qedi);
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,
48 .eh_timed_out = iscsi_eh_cmd_timed_out,
49 .eh_abort_handler = iscsi_eh_abort,
50 .eh_device_reset_handler = iscsi_eh_device_reset,
51 .eh_target_reset_handler = iscsi_eh_recover_target,
52 .eh_host_reset_handler = qedi_eh_host_reset,
53 .target_alloc = iscsi_target_alloc,
54 .change_queue_depth = scsi_change_queue_depth,
55 .can_queue = QEDI_MAX_ISCSI_TASK,
57 .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD,
58 .max_sectors = 0xffff,
59 .dma_boundary = QEDI_HW_DMA_BOUNDARY,
61 .shost_attrs = qedi_shost_attrs,
64 static void qedi_conn_free_login_resources(struct qedi_ctx *qedi,
65 struct qedi_conn *qedi_conn)
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;
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;
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;
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;
98 static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi,
99 struct qedi_conn *qedi_conn)
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,
106 if (!qedi_conn->gen_pdu.req_buf)
107 goto login_req_buf_failure;
109 qedi_conn->gen_pdu.req_buf_size = 0;
110 qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf;
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,
117 if (!qedi_conn->gen_pdu.resp_buf)
118 goto login_resp_buf_failure;
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;
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;
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,
133 if (!qedi_conn->gen_pdu.resp_bd_tbl)
134 goto login_resp_bd_tbl_failure;
136 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS,
137 "Allocation successful, cid=0x%x\n",
138 qedi_conn->iscsi_conn_id);
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;
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");
163 static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi,
164 struct iscsi_session *session)
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;
172 if (cmd->io_tbl.sge_tbl)
173 dma_free_coherent(&qedi->pdev->dev,
174 QEDI_ISCSI_MAX_BDS_PER_CMD *
175 sizeof(struct scsi_sge),
177 cmd->io_tbl.sge_tbl_dma);
179 if (cmd->sense_buffer)
180 dma_free_coherent(&qedi->pdev->dev,
181 SCSI_SENSE_BUFFERSIZE,
183 cmd->sense_buffer_dma);
187 static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session,
188 struct qedi_cmd *cmd)
190 struct qedi_io_bdt *io = &cmd->io_tbl;
191 struct scsi_sge *sge;
193 io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev,
194 QEDI_ISCSI_MAX_BDS_PER_CMD *
196 &io->sge_tbl_dma, GFP_KERNEL);
198 iscsi_session_printk(KERN_ERR, session,
199 "Could not allocate BD table.\n");
207 static int qedi_setup_cmd_pool(struct qedi_ctx *qedi,
208 struct iscsi_session *session)
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;
216 task->hdr = &cmd->hdr;
217 task->hdr_max = sizeof(struct iscsi_hdr);
219 if (qedi_alloc_sget(qedi, session, cmd))
222 cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev,
223 SCSI_SENSE_BUFFERSIZE,
224 &cmd->sense_buffer_dma,
226 if (!cmd->sense_buffer)
233 qedi_destroy_cmd_pool(qedi, session);
237 static struct iscsi_cls_session *
238 qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max,
239 u16 qdepth, uint32_t initial_cmdsn)
241 struct Scsi_Host *shost;
242 struct iscsi_cls_session *cls_session;
243 struct qedi_ctx *qedi;
244 struct qedi_endpoint *qedi_ep;
249 qedi_ep = ep->dd_data;
250 shost = qedi_ep->qedi->shost;
251 qedi = iscsi_host_priv(shost);
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;
258 cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost,
259 cmds_max, 0, sizeof(struct qedi_cmd),
260 initial_cmdsn, ISCSI_MAX_TARGET);
262 QEDI_ERR(&qedi->dbg_ctx,
263 "Failed to setup session for ep=%p\n", qedi_ep);
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;
276 iscsi_session_teardown(cls_session);
280 static void qedi_session_destroy(struct iscsi_cls_session *cls_session)
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);
286 qedi_destroy_cmd_pool(qedi, session);
287 iscsi_session_teardown(cls_session);
290 static struct iscsi_cls_conn *
291 qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
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;
299 cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn),
302 QEDI_ERR(&qedi->dbg_ctx,
303 "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n",
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);
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",
327 iscsi_conn_teardown(cls_conn);
331 void qedi_mark_device_missing(struct iscsi_cls_session *cls_session)
333 struct iscsi_session *session = cls_session->dd_data;
334 struct qedi_conn *qedi_conn = session->leadconn->dd_data;
336 spin_lock_bh(&session->frwd_lock);
337 set_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags);
338 spin_unlock_bh(&session->frwd_lock);
341 void qedi_mark_device_available(struct iscsi_cls_session *cls_session)
343 struct iscsi_session *session = cls_session->dd_data;
344 struct qedi_conn *qedi_conn = session->leadconn->dd_data;
346 spin_lock_bh(&session->frwd_lock);
347 clear_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags);
348 spin_unlock_bh(&session->frwd_lock);
351 static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi,
352 struct qedi_conn *qedi_conn)
354 u32 iscsi_cid = qedi_conn->iscsi_conn_id;
356 if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) {
357 iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
358 "conn bind - entry #%d not free\n",
363 qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn;
367 struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid)
369 if (!qedi->cid_que.conn_cid_tbl) {
370 QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n");
373 } else if (iscsi_cid >= qedi->max_active_conns) {
374 QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid);
377 return qedi->cid_que.conn_cid_tbl[iscsi_cid];
380 static int qedi_conn_bind(struct iscsi_cls_session *cls_session,
381 struct iscsi_cls_conn *cls_conn,
382 u64 transport_fd, int is_leading)
384 struct iscsi_conn *conn = cls_conn->dd_data;
385 struct qedi_conn *qedi_conn = conn->dd_data;
386 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
387 struct qedi_ctx *qedi = iscsi_host_priv(shost);
388 struct qedi_endpoint *qedi_ep;
389 struct iscsi_endpoint *ep;
392 ep = iscsi_lookup_endpoint(transport_fd);
396 qedi_ep = ep->dd_data;
397 if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) ||
398 (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) {
403 if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) {
409 qedi_ep->conn = qedi_conn;
410 qedi_conn->ep = qedi_ep;
411 qedi_conn->iscsi_ep = ep;
412 qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid;
413 qedi_conn->fw_cid = qedi_ep->fw_cid;
414 qedi_conn->cmd_cleanup_req = 0;
415 qedi_conn->cmd_cleanup_cmpl = 0;
417 if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) {
423 spin_lock_init(&qedi_conn->tmf_work_lock);
424 INIT_LIST_HEAD(&qedi_conn->tmf_work_list);
425 init_waitqueue_head(&qedi_conn->wait_queue);
427 iscsi_put_endpoint(ep);
431 static int qedi_iscsi_update_conn(struct qedi_ctx *qedi,
432 struct qedi_conn *qedi_conn)
434 struct qed_iscsi_params_update *conn_info;
435 struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn;
436 struct iscsi_conn *conn = cls_conn->dd_data;
437 struct qedi_endpoint *qedi_ep;
440 qedi_ep = qedi_conn->ep;
442 conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
444 QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n");
448 conn_info->update_flag = 0;
450 if (conn->hdrdgst_en)
451 SET_FIELD(conn_info->update_flag,
452 ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true);
453 if (conn->datadgst_en)
454 SET_FIELD(conn_info->update_flag,
455 ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true);
456 if (conn->session->initial_r2t_en)
457 SET_FIELD(conn_info->update_flag,
458 ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T,
460 if (conn->session->imm_data_en)
461 SET_FIELD(conn_info->update_flag,
462 ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA,
465 conn_info->max_seq_size = conn->session->max_burst;
466 conn_info->max_recv_pdu_length = conn->max_recv_dlength;
467 conn_info->max_send_pdu_length = conn->max_xmit_dlength;
468 conn_info->first_seq_length = conn->session->first_burst;
469 conn_info->exp_stat_sn = conn->exp_statsn;
471 rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle,
475 QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n");
482 static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en)
485 u16 hdrs = TCP_HDR_LEN;
488 hdrs += IPV6_HDR_LEN;
490 hdrs += IPV4_HDR_LEN;
500 static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep)
502 struct qed_iscsi_params_offload *conn_info;
503 struct qedi_ctx *qedi = qedi_ep->qedi;
507 conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL);
509 QEDI_ERR(&qedi->dbg_ctx,
510 "Failed to allocate memory ep=%p\n", qedi_ep);
514 ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac);
515 ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac);
517 conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]);
518 conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]);
520 if (qedi_ep->ip_type == TCP_IPV4) {
521 conn_info->ip_version = 0;
522 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
523 "After ntohl: src_addr=%pI4, dst_addr=%pI4\n",
524 qedi_ep->src_addr, qedi_ep->dst_addr);
526 for (i = 1; i < 4; i++) {
527 conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]);
528 conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]);
531 conn_info->ip_version = 1;
532 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
533 "After ntohl: src_addr=%pI6, dst_addr=%pI6\n",
534 qedi_ep->src_addr, qedi_ep->dst_addr);
537 conn_info->src.port = qedi_ep->src_port;
538 conn_info->dst.port = qedi_ep->dst_port;
540 conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE;
541 conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma;
542 conn_info->vlan_id = qedi_ep->vlan_id;
544 SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1);
545 SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1);
546 SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1);
547 SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1);
549 conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues);
551 conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT;
552 conn_info->dup_ack_theshold = 3;
553 conn_info->rcv_wnd = 65535;
555 conn_info->ss_thresh = 65535;
556 conn_info->srtt = 300;
557 conn_info->rtt_var = 150;
558 conn_info->flow_label = 0;
559 conn_info->ka_timeout = DEF_KA_TIMEOUT;
560 conn_info->ka_interval = DEF_KA_INTERVAL;
561 conn_info->max_rt_time = DEF_MAX_RT_TIME;
562 conn_info->ttl = DEF_TTL;
563 conn_info->tos_or_tc = DEF_TOS;
564 conn_info->remote_port = qedi_ep->dst_port;
565 conn_info->local_port = qedi_ep->src_port;
567 conn_info->mss = qedi_calc_mss(qedi_ep->pmtu,
568 (qedi_ep->ip_type == TCP_IPV6),
569 1, (qedi_ep->vlan_id != 0));
571 conn_info->cwnd = DEF_MAX_CWND * conn_info->mss;
572 conn_info->rcv_wnd_scale = 4;
573 conn_info->da_timeout_value = 200;
574 conn_info->ack_frequency = 2;
576 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
577 "Default cq index [%d], mss [%d]\n",
578 conn_info->default_cq, conn_info->mss);
580 /* Prepare the doorbell parameters */
581 qedi_ep->db_data.agg_flags = 0;
582 qedi_ep->db_data.params = 0;
583 SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_DEST, DB_DEST_XCM);
584 SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_CMD,
586 SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_AGG_VAL_SEL,
587 DQ_XCM_ISCSI_SQ_PROD_CMD);
588 SET_FIELD(qedi_ep->db_data.params, ISCSI_DB_DATA_BYPASS_EN, 1);
590 /* Register doorbell with doorbell recovery mechanism */
591 rval = qedi_ops->common->db_recovery_add(qedi->cdev,
601 rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info);
603 /* delete doorbell from doorbell recovery mechanism */
604 rval = qedi_ops->common->db_recovery_del(qedi->cdev,
608 QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n",
616 static int qedi_conn_start(struct iscsi_cls_conn *cls_conn)
618 struct iscsi_conn *conn = cls_conn->dd_data;
619 struct qedi_conn *qedi_conn = conn->dd_data;
620 struct qedi_ctx *qedi;
623 qedi = qedi_conn->qedi;
625 rval = qedi_iscsi_update_conn(qedi, qedi_conn);
627 iscsi_conn_printk(KERN_ALERT, conn,
628 "conn_start: FW offload conn failed.\n");
633 spin_lock(&qedi_conn->tmf_work_lock);
634 qedi_conn->fw_cleanup_works = 0;
635 qedi_conn->ep_disconnect_starting = false;
636 spin_unlock(&qedi_conn->tmf_work_lock);
638 qedi_conn->abrt_conn = 0;
640 rval = iscsi_conn_start(cls_conn);
642 iscsi_conn_printk(KERN_ALERT, conn,
643 "iscsi_conn_start: FW offload conn failed!!\n");
650 static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn)
652 struct iscsi_conn *conn = cls_conn->dd_data;
653 struct qedi_conn *qedi_conn = conn->dd_data;
654 struct Scsi_Host *shost;
655 struct qedi_ctx *qedi;
657 shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
658 qedi = iscsi_host_priv(shost);
660 qedi_conn_free_login_resources(qedi, qedi_conn);
661 iscsi_conn_teardown(cls_conn);
664 static int qedi_ep_get_param(struct iscsi_endpoint *ep,
665 enum iscsi_param param, char *buf)
667 struct qedi_endpoint *qedi_ep = ep->dd_data;
674 case ISCSI_PARAM_CONN_PORT:
675 len = sprintf(buf, "%hu\n", qedi_ep->dst_port);
677 case ISCSI_PARAM_CONN_ADDRESS:
678 if (qedi_ep->ip_type == TCP_IPV4)
679 len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr);
681 len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr);
690 static int qedi_host_get_param(struct Scsi_Host *shost,
691 enum iscsi_host_param param, char *buf)
693 struct qedi_ctx *qedi;
696 qedi = iscsi_host_priv(shost);
699 case ISCSI_HOST_PARAM_HWADDRESS:
700 len = sysfs_format_mac(buf, qedi->mac, 6);
702 case ISCSI_HOST_PARAM_NETDEV_NAME:
703 len = sprintf(buf, "host%d\n", shost->host_no);
705 case ISCSI_HOST_PARAM_IPADDRESS:
706 if (qedi->ip_type == TCP_IPV4)
707 len = sprintf(buf, "%pI4\n", qedi->src_ip);
709 len = sprintf(buf, "%pI6\n", qedi->src_ip);
712 return iscsi_host_get_param(shost, param, buf);
718 static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
719 struct iscsi_stats *stats)
721 struct iscsi_conn *conn = cls_conn->dd_data;
722 struct qed_iscsi_stats iscsi_stats;
723 struct Scsi_Host *shost;
724 struct qedi_ctx *qedi;
726 shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
727 qedi = iscsi_host_priv(shost);
728 qedi_ops->get_stats(qedi->cdev, &iscsi_stats);
730 conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt;
731 conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt;
732 conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt;
733 conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt;
734 conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt;
736 stats->txdata_octets = conn->txdata_octets;
737 stats->rxdata_octets = conn->rxdata_octets;
738 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
739 stats->dataout_pdus = conn->dataout_pdus_cnt;
740 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
741 stats->datain_pdus = conn->datain_pdus_cnt;
742 stats->r2t_pdus = conn->r2t_pdus_cnt;
743 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
744 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
745 stats->digest_err = 0;
746 stats->timeout_err = 0;
747 strcpy(stats->custom[0].desc, "eh_abort_cnt");
748 stats->custom[0].value = conn->eh_abort_cnt;
749 stats->custom_length = 1;
752 static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn)
754 struct scsi_sge *bd_tbl;
756 bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
758 bd_tbl->sge_addr.hi =
759 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
760 bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr;
761 bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr -
762 qedi_conn->gen_pdu.req_buf;
763 bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
764 bd_tbl->sge_addr.hi =
765 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
766 bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr;
767 bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN;
770 static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
772 struct qedi_cmd *cmd = task->dd_data;
773 struct qedi_conn *qedi_conn = cmd->conn;
778 qedi_iscsi_prep_generic_pdu_bd(qedi_conn);
779 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
781 qedi_send_iscsi_login(qedi_conn, task);
783 case ISCSI_OP_NOOP_OUT:
784 data_len = qedi_conn->gen_pdu.req_buf_size;
785 buf = qedi_conn->gen_pdu.req_buf;
787 rc = qedi_send_iscsi_nopout(qedi_conn, task,
790 rc = qedi_send_iscsi_nopout(qedi_conn, task,
793 case ISCSI_OP_LOGOUT:
794 rc = qedi_send_iscsi_logout(qedi_conn, task);
796 case ISCSI_OP_SCSI_TMFUNC:
797 rc = qedi_send_iscsi_tmf(qedi_conn, task);
800 rc = qedi_send_iscsi_text(qedi_conn, task);
803 iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
804 "unsupported op 0x%x\n", task->hdr->opcode);
810 static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
812 struct qedi_conn *qedi_conn = conn->dd_data;
813 struct qedi_cmd *cmd = task->dd_data;
815 memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
817 qedi_conn->gen_pdu.req_buf_size = task->data_count;
819 if (task->data_count) {
820 memcpy(qedi_conn->gen_pdu.req_buf, task->data,
822 qedi_conn->gen_pdu.req_wr_ptr =
823 qedi_conn->gen_pdu.req_buf + task->data_count;
826 cmd->conn = conn->dd_data;
827 return qedi_iscsi_send_generic_request(task);
830 static int qedi_task_xmit(struct iscsi_task *task)
832 struct iscsi_conn *conn = task->conn;
833 struct qedi_conn *qedi_conn = conn->dd_data;
834 struct qedi_cmd *cmd = task->dd_data;
835 struct scsi_cmnd *sc = task->sc;
837 /* Clear now so in cleanup_task we know it didn't make it */
838 cmd->scsi_cmd = NULL;
839 cmd->task_id = U16_MAX;
841 if (test_bit(QEDI_IN_SHUTDOWN, &qedi_conn->qedi->flags))
844 if (test_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags))
849 cmd->use_slowpath = false;
850 cmd->conn = qedi_conn;
852 cmd->io_cmd_in_list = false;
853 INIT_LIST_HEAD(&cmd->io_cmd);
856 return qedi_mtask_xmit(conn, task);
859 return qedi_iscsi_send_ioreq(task);
862 static void qedi_offload_work(struct work_struct *work)
864 struct qedi_endpoint *qedi_ep =
865 container_of(work, struct qedi_endpoint, offload_work);
866 struct qedi_ctx *qedi;
867 int wait_delay = 5 * HZ;
870 qedi = qedi_ep->qedi;
872 ret = qedi_iscsi_offload_conn(qedi_ep);
874 QEDI_ERR(&qedi->dbg_ctx,
875 "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
876 qedi_ep->iscsi_cid, qedi_ep, ret);
877 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
881 ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
883 EP_STATE_OFLDCONN_COMPL),
885 if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) {
886 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
887 QEDI_ERR(&qedi->dbg_ctx,
888 "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
889 qedi_ep->iscsi_cid, qedi_ep);
893 static struct iscsi_endpoint *
894 qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
897 struct qedi_ctx *qedi;
898 struct iscsi_endpoint *ep;
899 struct qedi_endpoint *qedi_ep;
900 struct sockaddr_in *addr;
901 struct sockaddr_in6 *addr6;
902 struct iscsi_path path_req;
903 u32 msg_type = ISCSI_KEVENT_IF_DOWN;
904 u32 iscsi_cid = QEDI_CID_RESERVED;
911 QEDI_ERR(NULL, "shost is NULL\n");
915 if (qedi_do_not_recover) {
920 qedi = iscsi_host_priv(shost);
922 if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) ||
923 test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
928 if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) {
929 QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n");
930 return ERR_PTR(-ENXIO);
933 ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint));
935 QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n");
939 qedi_ep = ep->dd_data;
940 memset(qedi_ep, 0, sizeof(struct qedi_endpoint));
941 INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
942 qedi_ep->state = EP_STATE_IDLE;
943 qedi_ep->iscsi_cid = (u32)-1;
944 qedi_ep->qedi = qedi;
946 if (dst_addr->sa_family == AF_INET) {
947 addr = (struct sockaddr_in *)dst_addr;
948 memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr,
949 sizeof(struct in_addr));
950 qedi_ep->dst_port = ntohs(addr->sin_port);
951 qedi_ep->ip_type = TCP_IPV4;
952 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
953 "dst_addr=%pI4, dst_port=%u\n",
954 qedi_ep->dst_addr, qedi_ep->dst_port);
955 } else if (dst_addr->sa_family == AF_INET6) {
956 addr6 = (struct sockaddr_in6 *)dst_addr;
957 memcpy(qedi_ep->dst_addr, &addr6->sin6_addr,
958 sizeof(struct in6_addr));
959 qedi_ep->dst_port = ntohs(addr6->sin6_port);
960 qedi_ep->ip_type = TCP_IPV6;
961 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
962 "dst_addr=%pI6, dst_port=%u\n",
963 qedi_ep->dst_addr, qedi_ep->dst_port);
965 QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n");
968 ret = qedi_alloc_sq(qedi, qedi_ep);
972 ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle,
973 &qedi_ep->fw_cid, &qedi_ep->p_doorbell);
976 QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n");
981 iscsi_cid = qedi_ep->handle;
982 qedi_ep->iscsi_cid = iscsi_cid;
984 init_waitqueue_head(&qedi_ep->ofld_wait);
985 init_waitqueue_head(&qedi_ep->tcp_ofld_wait);
986 qedi_ep->state = EP_STATE_OFLDCONN_START;
987 qedi->ep_tbl[iscsi_cid] = qedi_ep;
989 buf = (char *)&path_req;
990 len = sizeof(path_req);
991 memset(&path_req, 0, len);
993 msg_type = ISCSI_KEVENT_PATH_REQ;
994 path_req.handle = (u64)qedi_ep->iscsi_cid;
995 path_req.pmtu = qedi->ll2_mtu;
996 qedi_ep->pmtu = qedi->ll2_mtu;
997 if (qedi_ep->ip_type == TCP_IPV4) {
998 memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr,
999 sizeof(struct in_addr));
1000 path_req.ip_addr_len = 4;
1002 memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr,
1003 sizeof(struct in6_addr));
1004 path_req.ip_addr_len = 16;
1007 ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf,
1010 QEDI_ERR(&qedi->dbg_ctx,
1011 "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n",
1016 atomic_inc(&qedi->num_offloads);
1020 qedi->ep_tbl[iscsi_cid] = NULL;
1021 tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
1023 QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n",
1026 qedi_free_sq(qedi, qedi_ep);
1028 iscsi_destroy_endpoint(ep);
1029 return ERR_PTR(ret);
1032 static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1034 struct qedi_endpoint *qedi_ep;
1037 if (qedi_do_not_recover)
1040 qedi_ep = ep->dd_data;
1041 if (qedi_ep->state == EP_STATE_IDLE ||
1042 qedi_ep->state == EP_STATE_OFLDCONN_NONE ||
1043 qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
1046 if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL)
1049 ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait,
1050 QEDI_OFLD_WAIT_STATE(qedi_ep),
1051 msecs_to_jiffies(timeout_ms));
1053 if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
1064 static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn)
1066 struct qedi_cmd *cmd, *cmd_tmp;
1068 spin_lock(&qedi_conn->list_lock);
1069 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1071 list_del_init(&cmd->io_cmd);
1072 qedi_conn->active_cmd_count--;
1074 spin_unlock(&qedi_conn->list_lock);
1077 static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
1079 struct qedi_endpoint *qedi_ep;
1080 struct qedi_conn *qedi_conn = NULL;
1081 struct qedi_ctx *qedi;
1086 wait_delay = 60 * HZ + DEF_MAX_RT_TIME;
1087 qedi_ep = ep->dd_data;
1088 qedi = qedi_ep->qedi;
1090 flush_work(&qedi_ep->offload_work);
1092 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
1093 goto ep_exit_recover;
1095 if (qedi_ep->conn) {
1096 qedi_conn = qedi_ep->conn;
1097 abrt_conn = qedi_conn->abrt_conn;
1099 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1100 "cid=0x%x qedi_ep=%p waiting for %d tmfs\n",
1101 qedi_ep->iscsi_cid, qedi_ep,
1102 qedi_conn->fw_cleanup_works);
1104 spin_lock(&qedi_conn->tmf_work_lock);
1105 qedi_conn->ep_disconnect_starting = true;
1106 while (qedi_conn->fw_cleanup_works > 0) {
1107 spin_unlock(&qedi_conn->tmf_work_lock);
1109 spin_lock(&qedi_conn->tmf_work_lock);
1111 spin_unlock(&qedi_conn->tmf_work_lock);
1113 if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
1114 if (qedi_do_not_recover) {
1115 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1116 "Do not recover cid=0x%x\n",
1117 qedi_ep->iscsi_cid);
1118 goto ep_exit_recover;
1120 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1121 "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n",
1122 qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state);
1123 qedi_cleanup_active_cmd_list(qedi_conn);
1124 goto ep_release_conn;
1128 if (qedi_do_not_recover)
1129 goto ep_exit_recover;
1131 switch (qedi_ep->state) {
1132 case EP_STATE_OFLDCONN_START:
1133 case EP_STATE_OFLDCONN_NONE:
1134 goto ep_release_conn;
1135 case EP_STATE_OFLDCONN_FAILED:
1137 case EP_STATE_OFLDCONN_COMPL:
1138 if (unlikely(!qedi_conn))
1141 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1142 "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n",
1143 qedi_conn->active_cmd_count, abrt_conn,
1149 if (!qedi_conn->active_cmd_count)
1155 qedi_clearsq(qedi, qedi_conn, NULL);
1162 wait_delay += qedi->pf_params.iscsi_pf_params.two_msl_timer;
1164 qedi_ep->state = EP_STATE_DISCONN_START;
1166 if (test_bit(QEDI_IN_SHUTDOWN, &qedi->flags) ||
1167 test_bit(QEDI_IN_RECOVERY, &qedi->flags))
1168 goto ep_release_conn;
1170 /* Delete doorbell from doorbell recovery mechanism */
1171 ret = qedi_ops->common->db_recovery_del(qedi->cdev,
1172 qedi_ep->p_doorbell,
1175 ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn);
1177 QEDI_WARN(&qedi->dbg_ctx,
1178 "destroy_conn failed returned %d\n", ret);
1180 ret = wait_event_interruptible_timeout(
1181 qedi_ep->tcp_ofld_wait,
1183 EP_STATE_DISCONN_START),
1185 if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) {
1186 QEDI_WARN(&qedi->dbg_ctx,
1187 "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n",
1188 ret, wait_delay, qedi_ep->iscsi_cid);
1193 ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
1195 QEDI_WARN(&qedi->dbg_ctx,
1196 "release_conn returned %d, cid=0x%x\n",
1197 ret, qedi_ep->iscsi_cid);
1199 qedi_ep->state = EP_STATE_IDLE;
1200 qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL;
1201 qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL;
1202 qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port);
1203 qedi_free_sq(qedi, qedi_ep);
1206 qedi_conn->ep = NULL;
1208 qedi_ep->conn = NULL;
1209 qedi_ep->qedi = NULL;
1210 atomic_dec(&qedi->num_offloads);
1212 iscsi_destroy_endpoint(ep);
1215 static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid)
1217 struct qed_dev *cdev = qedi->cdev;
1218 struct qedi_uio_dev *udev;
1219 struct qedi_uio_ctrl *uctrl;
1220 struct sk_buff *skb;
1226 QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n");
1230 uctrl = (struct qedi_uio_ctrl *)udev->uctrl;
1232 QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n");
1236 len = uctrl->host_tx_pkt_len;
1238 QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len);
1242 skb = alloc_skb(len, GFP_ATOMIC);
1244 QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n");
1249 memcpy(skb->data, udev->tx_pkt, len);
1250 skb->ip_summed = CHECKSUM_NONE;
1253 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid);
1255 rc = qedi_ops->ll2->start_xmit(cdev, skb, 0);
1257 QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n",
1262 uctrl->host_tx_pkt_len = 0;
1263 uctrl->hw_tx_cons++;
1268 static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
1270 struct qedi_ctx *qedi;
1271 struct qedi_endpoint *qedi_ep;
1278 QEDI_ERR(NULL, "shost is NULL\n");
1282 if (strcmp(shost->hostt->proc_name, "qedi")) {
1284 QEDI_ERR(NULL, "shost %s is invalid\n",
1285 shost->hostt->proc_name);
1289 qedi = iscsi_host_priv(shost);
1290 if (path_data->handle == QEDI_PATH_HANDLE) {
1291 ret = qedi_data_avail(qedi, path_data->vlan_id);
1295 iscsi_cid = (u32)path_data->handle;
1296 if (iscsi_cid >= qedi->max_active_conns) {
1300 qedi_ep = qedi->ep_tbl[iscsi_cid];
1301 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1302 "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep);
1308 if (!is_valid_ether_addr(&path_data->mac_addr[0])) {
1309 QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n");
1310 qedi_ep->state = EP_STATE_OFLDCONN_NONE;
1315 ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]);
1316 ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]);
1318 qedi_ep->vlan_id = path_data->vlan_id;
1319 if (path_data->pmtu < DEF_PATH_MTU) {
1320 qedi_ep->pmtu = qedi->ll2_mtu;
1321 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1322 "MTU cannot be %u, using default MTU %u\n",
1323 path_data->pmtu, qedi_ep->pmtu);
1326 if (path_data->pmtu != qedi->ll2_mtu) {
1327 if (path_data->pmtu > JUMBO_MTU) {
1329 QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu);
1333 qedi_reset_host_mtu(qedi, path_data->pmtu);
1334 qedi_ep->pmtu = qedi->ll2_mtu;
1337 port_id = qedi_ep->src_port;
1338 if (port_id >= QEDI_LOCAL_PORT_MIN &&
1339 port_id < QEDI_LOCAL_PORT_MAX) {
1340 if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id))
1347 port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl);
1348 if (port_id == QEDI_LOCAL_PORT_INVALID) {
1349 QEDI_ERR(&qedi->dbg_ctx,
1350 "Failed to allocate port id for iscsi_cid=0x%x\n",
1357 qedi_ep->src_port = port_id;
1359 if (qedi_ep->ip_type == TCP_IPV4) {
1360 memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr,
1361 sizeof(struct in_addr));
1362 memcpy(&qedi->src_ip[0], &path_data->src.v4_addr,
1363 sizeof(struct in_addr));
1364 qedi->ip_type = TCP_IPV4;
1366 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1367 "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n",
1368 qedi_ep->src_addr, qedi_ep->src_port,
1369 qedi_ep->dst_addr, qedi_ep->dst_port);
1371 memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr,
1372 sizeof(struct in6_addr));
1373 memcpy(&qedi->src_ip[0], &path_data->src.v6_addr,
1374 sizeof(struct in6_addr));
1375 qedi->ip_type = TCP_IPV6;
1377 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1378 "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n",
1379 qedi_ep->src_addr, qedi_ep->src_port,
1380 qedi_ep->dst_addr, qedi_ep->dst_port);
1383 queue_work(qedi->offload_thread, &qedi_ep->offload_work);
1391 static umode_t qedi_attr_is_visible(int param_type, int param)
1393 switch (param_type) {
1394 case ISCSI_HOST_PARAM:
1396 case ISCSI_HOST_PARAM_NETDEV_NAME:
1397 case ISCSI_HOST_PARAM_HWADDRESS:
1398 case ISCSI_HOST_PARAM_IPADDRESS:
1405 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1406 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1407 case ISCSI_PARAM_HDRDGST_EN:
1408 case ISCSI_PARAM_DATADGST_EN:
1409 case ISCSI_PARAM_CONN_ADDRESS:
1410 case ISCSI_PARAM_CONN_PORT:
1411 case ISCSI_PARAM_EXP_STATSN:
1412 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1413 case ISCSI_PARAM_PERSISTENT_PORT:
1414 case ISCSI_PARAM_PING_TMO:
1415 case ISCSI_PARAM_RECV_TMO:
1416 case ISCSI_PARAM_INITIAL_R2T_EN:
1417 case ISCSI_PARAM_MAX_R2T:
1418 case ISCSI_PARAM_IMM_DATA_EN:
1419 case ISCSI_PARAM_FIRST_BURST:
1420 case ISCSI_PARAM_MAX_BURST:
1421 case ISCSI_PARAM_PDU_INORDER_EN:
1422 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1423 case ISCSI_PARAM_ERL:
1424 case ISCSI_PARAM_TARGET_NAME:
1425 case ISCSI_PARAM_TPGT:
1426 case ISCSI_PARAM_USERNAME:
1427 case ISCSI_PARAM_PASSWORD:
1428 case ISCSI_PARAM_USERNAME_IN:
1429 case ISCSI_PARAM_PASSWORD_IN:
1430 case ISCSI_PARAM_FAST_ABORT:
1431 case ISCSI_PARAM_ABORT_TMO:
1432 case ISCSI_PARAM_LU_RESET_TMO:
1433 case ISCSI_PARAM_TGT_RESET_TMO:
1434 case ISCSI_PARAM_IFACE_NAME:
1435 case ISCSI_PARAM_INITIATOR_NAME:
1436 case ISCSI_PARAM_BOOT_ROOT:
1437 case ISCSI_PARAM_BOOT_NIC:
1438 case ISCSI_PARAM_BOOT_TARGET:
1448 static void qedi_cleanup_task(struct iscsi_task *task)
1450 struct qedi_cmd *cmd;
1452 if (task->state == ISCSI_TASK_PENDING) {
1453 QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n",
1454 refcount_read(&task->refcount));
1459 qedi_iscsi_unmap_sg_list(task->dd_data);
1461 cmd = task->dd_data;
1462 if (cmd->task_id != U16_MAX)
1463 qedi_clear_task_idx(iscsi_host_priv(task->conn->session->host),
1466 cmd->task_id = U16_MAX;
1467 cmd->scsi_cmd = NULL;
1470 struct iscsi_transport qedi_iscsi_transport = {
1471 .owner = THIS_MODULE,
1472 .name = QEDI_MODULE_NAME,
1473 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST |
1474 CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO,
1475 .create_session = qedi_session_create,
1476 .destroy_session = qedi_session_destroy,
1477 .create_conn = qedi_conn_create,
1478 .bind_conn = qedi_conn_bind,
1479 .unbind_conn = iscsi_conn_unbind,
1480 .start_conn = qedi_conn_start,
1481 .stop_conn = iscsi_conn_stop,
1482 .destroy_conn = qedi_conn_destroy,
1483 .set_param = iscsi_set_param,
1484 .get_ep_param = qedi_ep_get_param,
1485 .get_conn_param = iscsi_conn_get_param,
1486 .get_session_param = iscsi_session_get_param,
1487 .get_host_param = qedi_host_get_param,
1488 .send_pdu = iscsi_conn_send_pdu,
1489 .get_stats = qedi_conn_get_stats,
1490 .xmit_task = qedi_task_xmit,
1491 .cleanup_task = qedi_cleanup_task,
1492 .session_recovery_timedout = iscsi_session_recovery_timedout,
1493 .ep_connect = qedi_ep_connect,
1494 .ep_poll = qedi_ep_poll,
1495 .ep_disconnect = qedi_ep_disconnect,
1496 .set_path = qedi_set_path,
1497 .attr_is_visible = qedi_attr_is_visible,
1500 void qedi_start_conn_recovery(struct qedi_ctx *qedi,
1501 struct qedi_conn *qedi_conn)
1503 struct iscsi_cls_session *cls_sess;
1504 struct iscsi_cls_conn *cls_conn;
1505 struct iscsi_conn *conn;
1507 cls_conn = qedi_conn->cls_conn;
1508 conn = cls_conn->dd_data;
1509 cls_sess = iscsi_conn_to_session(cls_conn);
1511 if (iscsi_is_session_online(cls_sess)) {
1512 qedi_conn->abrt_conn = 1;
1513 QEDI_ERR(&qedi->dbg_ctx,
1514 "Failing connection, state=0x%x, cid=0x%x\n",
1515 conn->session->state, qedi_conn->iscsi_conn_id);
1516 iscsi_conn_failure(qedi_conn->cls_conn->dd_data,
1517 ISCSI_ERR_CONN_FAILED);
1521 static const struct {
1522 enum iscsi_error_types error_code;
1524 } qedi_iscsi_error[] = {
1525 { ISCSI_STATUS_NONE,
1528 { ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
1531 { ISCSI_CONN_ERROR_TASK_NOT_VALID,
1534 { ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
1537 { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
1540 { ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
1541 "sge caching failed"
1543 { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
1546 { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
1549 { ISCSI_CONN_ERROR_DATA_OVERRUN,
1552 { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
1555 { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
1556 "tcp ip fragment error"
1558 { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
1559 "AHS len protocol error"
1561 { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
1562 "itt out of range error"
1564 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
1565 "data seg more than pdu size"
1567 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
1570 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
1571 "invalid opcode before update"
1573 { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
1576 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
1577 "r2t carries no data"
1579 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
1582 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
1585 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
1588 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
1589 "buffer offset error"
1591 { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
1594 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
1597 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
1598 "data xer len error"
1600 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
1601 "data xer len1 error"
1603 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
1604 "data xer len2 error"
1606 { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
1607 "protocol lun error"
1609 { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
1612 { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
1615 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
1616 "dsl not zero error"
1618 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
1621 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
1622 "data seg len too big"
1624 { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
1625 "outstanding r2t count error"
1627 { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
1628 "sense datalen error"
1632 static char *qedi_get_iscsi_error(enum iscsi_error_types err_code)
1637 for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) {
1638 if (qedi_iscsi_error[i].error_code == err_code) {
1639 msg = qedi_iscsi_error[i].err_string;
1646 void qedi_process_iscsi_error(struct qedi_endpoint *ep,
1647 struct iscsi_eqe_data *data)
1649 struct qedi_conn *qedi_conn;
1650 struct qedi_ctx *qedi;
1651 char warn_notice[] = "iscsi_warning";
1652 char error_notice[] = "iscsi_error";
1653 char unknown_msg[] = "Unknown error";
1655 int need_recovery = 0;
1662 qedi_conn = ep->conn;
1668 QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n",
1673 message = warn_notice;
1676 message = error_notice;
1679 msg = qedi_get_iscsi_error(data->error_code);
1685 iscsi_conn_printk(KERN_ALERT,
1686 qedi_conn->cls_conn->dd_data,
1687 "qedi: %s - %s\n", message, msg);
1690 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1693 void qedi_process_tcp_error(struct qedi_endpoint *ep,
1694 struct iscsi_eqe_data *data)
1696 struct qedi_conn *qedi_conn;
1701 qedi_conn = ep->conn;
1705 QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n",
1708 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);