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 qedi_ctx *qedi = qedi_ep->qedi;
503 struct qed_iscsi_params_offload *conn_info;
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 rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info);
582 QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n",
589 static int qedi_conn_start(struct iscsi_cls_conn *cls_conn)
591 struct iscsi_conn *conn = cls_conn->dd_data;
592 struct qedi_conn *qedi_conn = conn->dd_data;
593 struct qedi_ctx *qedi;
596 qedi = qedi_conn->qedi;
598 rval = qedi_iscsi_update_conn(qedi, qedi_conn);
600 iscsi_conn_printk(KERN_ALERT, conn,
601 "conn_start: FW offload conn failed.\n");
606 clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
607 qedi_conn->abrt_conn = 0;
609 rval = iscsi_conn_start(cls_conn);
611 iscsi_conn_printk(KERN_ALERT, conn,
612 "iscsi_conn_start: FW offload conn failed!!\n");
619 static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn)
621 struct iscsi_conn *conn = cls_conn->dd_data;
622 struct qedi_conn *qedi_conn = conn->dd_data;
623 struct Scsi_Host *shost;
624 struct qedi_ctx *qedi;
626 shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
627 qedi = iscsi_host_priv(shost);
629 qedi_conn_free_login_resources(qedi, qedi_conn);
630 iscsi_conn_teardown(cls_conn);
633 static int qedi_ep_get_param(struct iscsi_endpoint *ep,
634 enum iscsi_param param, char *buf)
636 struct qedi_endpoint *qedi_ep = ep->dd_data;
643 case ISCSI_PARAM_CONN_PORT:
644 len = sprintf(buf, "%hu\n", qedi_ep->dst_port);
646 case ISCSI_PARAM_CONN_ADDRESS:
647 if (qedi_ep->ip_type == TCP_IPV4)
648 len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr);
650 len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr);
659 static int qedi_host_get_param(struct Scsi_Host *shost,
660 enum iscsi_host_param param, char *buf)
662 struct qedi_ctx *qedi;
665 qedi = iscsi_host_priv(shost);
668 case ISCSI_HOST_PARAM_HWADDRESS:
669 len = sysfs_format_mac(buf, qedi->mac, 6);
671 case ISCSI_HOST_PARAM_NETDEV_NAME:
672 len = sprintf(buf, "host%d\n", shost->host_no);
674 case ISCSI_HOST_PARAM_IPADDRESS:
675 if (qedi->ip_type == TCP_IPV4)
676 len = sprintf(buf, "%pI4\n", qedi->src_ip);
678 len = sprintf(buf, "%pI6\n", qedi->src_ip);
681 return iscsi_host_get_param(shost, param, buf);
687 static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
688 struct iscsi_stats *stats)
690 struct iscsi_conn *conn = cls_conn->dd_data;
691 struct qed_iscsi_stats iscsi_stats;
692 struct Scsi_Host *shost;
693 struct qedi_ctx *qedi;
695 shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
696 qedi = iscsi_host_priv(shost);
697 qedi_ops->get_stats(qedi->cdev, &iscsi_stats);
699 conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt;
700 conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt;
701 conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt;
702 conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt;
703 conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt;
705 stats->txdata_octets = conn->txdata_octets;
706 stats->rxdata_octets = conn->rxdata_octets;
707 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
708 stats->dataout_pdus = conn->dataout_pdus_cnt;
709 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
710 stats->datain_pdus = conn->datain_pdus_cnt;
711 stats->r2t_pdus = conn->r2t_pdus_cnt;
712 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
713 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
714 stats->digest_err = 0;
715 stats->timeout_err = 0;
716 strcpy(stats->custom[0].desc, "eh_abort_cnt");
717 stats->custom[0].value = conn->eh_abort_cnt;
718 stats->custom_length = 1;
721 static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn)
723 struct scsi_sge *bd_tbl;
725 bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl;
727 bd_tbl->sge_addr.hi =
728 (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32);
729 bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr;
730 bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr -
731 qedi_conn->gen_pdu.req_buf;
732 bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl;
733 bd_tbl->sge_addr.hi =
734 (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32);
735 bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr;
736 bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN;
739 static int qedi_iscsi_send_generic_request(struct iscsi_task *task)
741 struct qedi_cmd *cmd = task->dd_data;
742 struct qedi_conn *qedi_conn = cmd->conn;
747 qedi_iscsi_prep_generic_pdu_bd(qedi_conn);
748 switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
750 qedi_send_iscsi_login(qedi_conn, task);
752 case ISCSI_OP_NOOP_OUT:
753 data_len = qedi_conn->gen_pdu.req_buf_size;
754 buf = qedi_conn->gen_pdu.req_buf;
756 rc = qedi_send_iscsi_nopout(qedi_conn, task,
759 rc = qedi_send_iscsi_nopout(qedi_conn, task,
762 case ISCSI_OP_LOGOUT:
763 rc = qedi_send_iscsi_logout(qedi_conn, task);
765 case ISCSI_OP_SCSI_TMFUNC:
766 rc = qedi_iscsi_abort_work(qedi_conn, task);
769 rc = qedi_send_iscsi_text(qedi_conn, task);
772 iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data,
773 "unsupported op 0x%x\n", task->hdr->opcode);
779 static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
781 struct qedi_conn *qedi_conn = conn->dd_data;
782 struct qedi_cmd *cmd = task->dd_data;
784 memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
786 qedi_conn->gen_pdu.req_buf_size = task->data_count;
788 if (task->data_count) {
789 memcpy(qedi_conn->gen_pdu.req_buf, task->data,
791 qedi_conn->gen_pdu.req_wr_ptr =
792 qedi_conn->gen_pdu.req_buf + task->data_count;
795 cmd->conn = conn->dd_data;
796 return qedi_iscsi_send_generic_request(task);
799 static int qedi_task_xmit(struct iscsi_task *task)
801 struct iscsi_conn *conn = task->conn;
802 struct qedi_conn *qedi_conn = conn->dd_data;
803 struct qedi_cmd *cmd = task->dd_data;
804 struct scsi_cmnd *sc = task->sc;
806 /* Clear now so in cleanup_task we know it didn't make it */
807 cmd->scsi_cmd = NULL;
808 cmd->task_id = U16_MAX;
810 if (test_bit(QEDI_IN_SHUTDOWN, &qedi_conn->qedi->flags))
813 if (test_bit(QEDI_BLOCK_IO, &qedi_conn->qedi->flags))
818 cmd->use_slowpath = false;
819 cmd->conn = qedi_conn;
821 cmd->io_cmd_in_list = false;
822 INIT_LIST_HEAD(&cmd->io_cmd);
825 return qedi_mtask_xmit(conn, task);
828 return qedi_iscsi_send_ioreq(task);
831 static void qedi_offload_work(struct work_struct *work)
833 struct qedi_endpoint *qedi_ep =
834 container_of(work, struct qedi_endpoint, offload_work);
835 struct qedi_ctx *qedi;
836 int wait_delay = 5 * HZ;
839 qedi = qedi_ep->qedi;
841 ret = qedi_iscsi_offload_conn(qedi_ep);
843 QEDI_ERR(&qedi->dbg_ctx,
844 "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n",
845 qedi_ep->iscsi_cid, qedi_ep, ret);
846 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
850 ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait,
852 EP_STATE_OFLDCONN_COMPL),
854 if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) {
855 qedi_ep->state = EP_STATE_OFLDCONN_FAILED;
856 QEDI_ERR(&qedi->dbg_ctx,
857 "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n",
858 qedi_ep->iscsi_cid, qedi_ep);
862 static struct iscsi_endpoint *
863 qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
866 struct qedi_ctx *qedi;
867 struct iscsi_endpoint *ep;
868 struct qedi_endpoint *qedi_ep;
869 struct sockaddr_in *addr;
870 struct sockaddr_in6 *addr6;
871 struct iscsi_path path_req;
872 u32 msg_type = ISCSI_KEVENT_IF_DOWN;
873 u32 iscsi_cid = QEDI_CID_RESERVED;
880 QEDI_ERR(NULL, "shost is NULL\n");
884 if (qedi_do_not_recover) {
889 qedi = iscsi_host_priv(shost);
891 if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) ||
892 test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
897 if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) {
898 QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n");
899 return ERR_PTR(-ENXIO);
902 ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint));
904 QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n");
908 qedi_ep = ep->dd_data;
909 memset(qedi_ep, 0, sizeof(struct qedi_endpoint));
910 INIT_WORK(&qedi_ep->offload_work, qedi_offload_work);
911 qedi_ep->state = EP_STATE_IDLE;
912 qedi_ep->iscsi_cid = (u32)-1;
913 qedi_ep->qedi = qedi;
915 if (dst_addr->sa_family == AF_INET) {
916 addr = (struct sockaddr_in *)dst_addr;
917 memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr,
918 sizeof(struct in_addr));
919 qedi_ep->dst_port = ntohs(addr->sin_port);
920 qedi_ep->ip_type = TCP_IPV4;
921 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
922 "dst_addr=%pI4, dst_port=%u\n",
923 qedi_ep->dst_addr, qedi_ep->dst_port);
924 } else if (dst_addr->sa_family == AF_INET6) {
925 addr6 = (struct sockaddr_in6 *)dst_addr;
926 memcpy(qedi_ep->dst_addr, &addr6->sin6_addr,
927 sizeof(struct in6_addr));
928 qedi_ep->dst_port = ntohs(addr6->sin6_port);
929 qedi_ep->ip_type = TCP_IPV6;
930 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
931 "dst_addr=%pI6, dst_port=%u\n",
932 qedi_ep->dst_addr, qedi_ep->dst_port);
934 QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n");
937 ret = qedi_alloc_sq(qedi, qedi_ep);
941 ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle,
942 &qedi_ep->fw_cid, &qedi_ep->p_doorbell);
945 QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n");
950 iscsi_cid = qedi_ep->handle;
951 qedi_ep->iscsi_cid = iscsi_cid;
953 init_waitqueue_head(&qedi_ep->ofld_wait);
954 init_waitqueue_head(&qedi_ep->tcp_ofld_wait);
955 qedi_ep->state = EP_STATE_OFLDCONN_START;
956 qedi->ep_tbl[iscsi_cid] = qedi_ep;
958 buf = (char *)&path_req;
959 len = sizeof(path_req);
960 memset(&path_req, 0, len);
962 msg_type = ISCSI_KEVENT_PATH_REQ;
963 path_req.handle = (u64)qedi_ep->iscsi_cid;
964 path_req.pmtu = qedi->ll2_mtu;
965 qedi_ep->pmtu = qedi->ll2_mtu;
966 if (qedi_ep->ip_type == TCP_IPV4) {
967 memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr,
968 sizeof(struct in_addr));
969 path_req.ip_addr_len = 4;
971 memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr,
972 sizeof(struct in6_addr));
973 path_req.ip_addr_len = 16;
976 ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf,
979 QEDI_ERR(&qedi->dbg_ctx,
980 "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n",
985 atomic_inc(&qedi->num_offloads);
989 qedi->ep_tbl[iscsi_cid] = NULL;
990 tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
992 QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n",
995 qedi_free_sq(qedi, qedi_ep);
997 iscsi_destroy_endpoint(ep);
1001 static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1003 struct qedi_endpoint *qedi_ep;
1006 if (qedi_do_not_recover)
1009 qedi_ep = ep->dd_data;
1010 if (qedi_ep->state == EP_STATE_IDLE ||
1011 qedi_ep->state == EP_STATE_OFLDCONN_NONE ||
1012 qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
1015 if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL)
1018 ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait,
1019 QEDI_OFLD_WAIT_STATE(qedi_ep),
1020 msecs_to_jiffies(timeout_ms));
1022 if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED)
1033 static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn)
1035 struct qedi_cmd *cmd, *cmd_tmp;
1037 spin_lock(&qedi_conn->list_lock);
1038 list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list,
1040 list_del_init(&cmd->io_cmd);
1041 qedi_conn->active_cmd_count--;
1043 spin_unlock(&qedi_conn->list_lock);
1046 static void qedi_ep_disconnect(struct iscsi_endpoint *ep)
1048 struct qedi_endpoint *qedi_ep;
1049 struct qedi_conn *qedi_conn = NULL;
1050 struct iscsi_conn *conn = NULL;
1051 struct qedi_ctx *qedi;
1057 wait_delay = 60 * HZ + DEF_MAX_RT_TIME;
1058 qedi_ep = ep->dd_data;
1059 qedi = qedi_ep->qedi;
1061 flush_work(&qedi_ep->offload_work);
1063 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
1064 goto ep_exit_recover;
1066 if (qedi_ep->conn) {
1067 qedi_conn = qedi_ep->conn;
1068 conn = qedi_conn->cls_conn->dd_data;
1069 iscsi_suspend_queue(conn);
1070 abrt_conn = qedi_conn->abrt_conn;
1073 if (!test_bit(QEDI_CONN_FW_CLEANUP,
1074 &qedi_conn->flags)) {
1080 if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
1081 if (qedi_do_not_recover) {
1082 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1083 "Do not recover cid=0x%x\n",
1084 qedi_ep->iscsi_cid);
1085 goto ep_exit_recover;
1087 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1088 "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n",
1089 qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state);
1090 qedi_cleanup_active_cmd_list(qedi_conn);
1091 goto ep_release_conn;
1095 if (qedi_do_not_recover)
1096 goto ep_exit_recover;
1098 switch (qedi_ep->state) {
1099 case EP_STATE_OFLDCONN_START:
1100 case EP_STATE_OFLDCONN_NONE:
1101 goto ep_release_conn;
1102 case EP_STATE_OFLDCONN_FAILED:
1104 case EP_STATE_OFLDCONN_COMPL:
1105 if (unlikely(!qedi_conn))
1108 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1109 "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n",
1110 qedi_conn->active_cmd_count, abrt_conn,
1116 if (!qedi_conn->active_cmd_count)
1122 qedi_clearsq(qedi, qedi_conn, NULL);
1129 wait_delay += qedi->pf_params.iscsi_pf_params.two_msl_timer;
1131 qedi_ep->state = EP_STATE_DISCONN_START;
1133 if (test_bit(QEDI_IN_SHUTDOWN, &qedi->flags) ||
1134 test_bit(QEDI_IN_RECOVERY, &qedi->flags))
1135 goto ep_release_conn;
1137 ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn);
1139 QEDI_WARN(&qedi->dbg_ctx,
1140 "destroy_conn failed returned %d\n", ret);
1142 ret = wait_event_interruptible_timeout(
1143 qedi_ep->tcp_ofld_wait,
1145 EP_STATE_DISCONN_START),
1147 if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) {
1148 QEDI_WARN(&qedi->dbg_ctx,
1149 "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n",
1150 ret, wait_delay, qedi_ep->iscsi_cid);
1155 ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle);
1157 QEDI_WARN(&qedi->dbg_ctx,
1158 "release_conn returned %d, cid=0x%x\n",
1159 ret, qedi_ep->iscsi_cid);
1161 qedi_ep->state = EP_STATE_IDLE;
1162 qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL;
1163 qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL;
1164 qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port);
1165 qedi_free_sq(qedi, qedi_ep);
1168 qedi_conn->ep = NULL;
1170 qedi_ep->conn = NULL;
1171 qedi_ep->qedi = NULL;
1172 atomic_dec(&qedi->num_offloads);
1174 iscsi_destroy_endpoint(ep);
1177 static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid)
1179 struct qed_dev *cdev = qedi->cdev;
1180 struct qedi_uio_dev *udev;
1181 struct qedi_uio_ctrl *uctrl;
1182 struct sk_buff *skb;
1188 QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n");
1192 uctrl = (struct qedi_uio_ctrl *)udev->uctrl;
1194 QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n");
1198 len = uctrl->host_tx_pkt_len;
1200 QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len);
1204 skb = alloc_skb(len, GFP_ATOMIC);
1206 QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n");
1211 memcpy(skb->data, udev->tx_pkt, len);
1212 skb->ip_summed = CHECKSUM_NONE;
1215 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid);
1217 rc = qedi_ops->ll2->start_xmit(cdev, skb, 0);
1219 QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n",
1224 uctrl->host_tx_pkt_len = 0;
1225 uctrl->hw_tx_cons++;
1230 static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data)
1232 struct qedi_ctx *qedi;
1233 struct qedi_endpoint *qedi_ep;
1240 QEDI_ERR(NULL, "shost is NULL\n");
1244 if (strcmp(shost->hostt->proc_name, "qedi")) {
1246 QEDI_ERR(NULL, "shost %s is invalid\n",
1247 shost->hostt->proc_name);
1251 qedi = iscsi_host_priv(shost);
1252 if (path_data->handle == QEDI_PATH_HANDLE) {
1253 ret = qedi_data_avail(qedi, path_data->vlan_id);
1257 iscsi_cid = (u32)path_data->handle;
1258 if (iscsi_cid >= qedi->max_active_conns) {
1262 qedi_ep = qedi->ep_tbl[iscsi_cid];
1263 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1264 "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep);
1270 if (!is_valid_ether_addr(&path_data->mac_addr[0])) {
1271 QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n");
1272 qedi_ep->state = EP_STATE_OFLDCONN_NONE;
1277 ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]);
1278 ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]);
1280 qedi_ep->vlan_id = path_data->vlan_id;
1281 if (path_data->pmtu < DEF_PATH_MTU) {
1282 qedi_ep->pmtu = qedi->ll2_mtu;
1283 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1284 "MTU cannot be %u, using default MTU %u\n",
1285 path_data->pmtu, qedi_ep->pmtu);
1288 if (path_data->pmtu != qedi->ll2_mtu) {
1289 if (path_data->pmtu > JUMBO_MTU) {
1291 QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu);
1295 qedi_reset_host_mtu(qedi, path_data->pmtu);
1296 qedi_ep->pmtu = qedi->ll2_mtu;
1299 port_id = qedi_ep->src_port;
1300 if (port_id >= QEDI_LOCAL_PORT_MIN &&
1301 port_id < QEDI_LOCAL_PORT_MAX) {
1302 if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id))
1309 port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl);
1310 if (port_id == QEDI_LOCAL_PORT_INVALID) {
1311 QEDI_ERR(&qedi->dbg_ctx,
1312 "Failed to allocate port id for iscsi_cid=0x%x\n",
1319 qedi_ep->src_port = port_id;
1321 if (qedi_ep->ip_type == TCP_IPV4) {
1322 memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr,
1323 sizeof(struct in_addr));
1324 memcpy(&qedi->src_ip[0], &path_data->src.v4_addr,
1325 sizeof(struct in_addr));
1326 qedi->ip_type = TCP_IPV4;
1328 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1329 "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n",
1330 qedi_ep->src_addr, qedi_ep->src_port,
1331 qedi_ep->dst_addr, qedi_ep->dst_port);
1333 memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr,
1334 sizeof(struct in6_addr));
1335 memcpy(&qedi->src_ip[0], &path_data->src.v6_addr,
1336 sizeof(struct in6_addr));
1337 qedi->ip_type = TCP_IPV6;
1339 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1340 "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n",
1341 qedi_ep->src_addr, qedi_ep->src_port,
1342 qedi_ep->dst_addr, qedi_ep->dst_port);
1345 queue_work(qedi->offload_thread, &qedi_ep->offload_work);
1353 static umode_t qedi_attr_is_visible(int param_type, int param)
1355 switch (param_type) {
1356 case ISCSI_HOST_PARAM:
1358 case ISCSI_HOST_PARAM_NETDEV_NAME:
1359 case ISCSI_HOST_PARAM_HWADDRESS:
1360 case ISCSI_HOST_PARAM_IPADDRESS:
1367 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1368 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1369 case ISCSI_PARAM_HDRDGST_EN:
1370 case ISCSI_PARAM_DATADGST_EN:
1371 case ISCSI_PARAM_CONN_ADDRESS:
1372 case ISCSI_PARAM_CONN_PORT:
1373 case ISCSI_PARAM_EXP_STATSN:
1374 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1375 case ISCSI_PARAM_PERSISTENT_PORT:
1376 case ISCSI_PARAM_PING_TMO:
1377 case ISCSI_PARAM_RECV_TMO:
1378 case ISCSI_PARAM_INITIAL_R2T_EN:
1379 case ISCSI_PARAM_MAX_R2T:
1380 case ISCSI_PARAM_IMM_DATA_EN:
1381 case ISCSI_PARAM_FIRST_BURST:
1382 case ISCSI_PARAM_MAX_BURST:
1383 case ISCSI_PARAM_PDU_INORDER_EN:
1384 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1385 case ISCSI_PARAM_ERL:
1386 case ISCSI_PARAM_TARGET_NAME:
1387 case ISCSI_PARAM_TPGT:
1388 case ISCSI_PARAM_USERNAME:
1389 case ISCSI_PARAM_PASSWORD:
1390 case ISCSI_PARAM_USERNAME_IN:
1391 case ISCSI_PARAM_PASSWORD_IN:
1392 case ISCSI_PARAM_FAST_ABORT:
1393 case ISCSI_PARAM_ABORT_TMO:
1394 case ISCSI_PARAM_LU_RESET_TMO:
1395 case ISCSI_PARAM_TGT_RESET_TMO:
1396 case ISCSI_PARAM_IFACE_NAME:
1397 case ISCSI_PARAM_INITIATOR_NAME:
1398 case ISCSI_PARAM_BOOT_ROOT:
1399 case ISCSI_PARAM_BOOT_NIC:
1400 case ISCSI_PARAM_BOOT_TARGET:
1410 static void qedi_cleanup_task(struct iscsi_task *task)
1412 struct qedi_cmd *cmd;
1414 if (task->state == ISCSI_TASK_PENDING) {
1415 QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n",
1416 refcount_read(&task->refcount));
1421 qedi_iscsi_unmap_sg_list(task->dd_data);
1423 cmd = task->dd_data;
1424 if (cmd->task_id != U16_MAX)
1425 qedi_clear_task_idx(iscsi_host_priv(task->conn->session->host),
1428 cmd->task_id = U16_MAX;
1429 cmd->scsi_cmd = NULL;
1432 struct iscsi_transport qedi_iscsi_transport = {
1433 .owner = THIS_MODULE,
1434 .name = QEDI_MODULE_NAME,
1435 .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST |
1436 CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO,
1437 .create_session = qedi_session_create,
1438 .destroy_session = qedi_session_destroy,
1439 .create_conn = qedi_conn_create,
1440 .bind_conn = qedi_conn_bind,
1441 .unbind_conn = iscsi_conn_unbind,
1442 .start_conn = qedi_conn_start,
1443 .stop_conn = iscsi_conn_stop,
1444 .destroy_conn = qedi_conn_destroy,
1445 .set_param = iscsi_set_param,
1446 .get_ep_param = qedi_ep_get_param,
1447 .get_conn_param = iscsi_conn_get_param,
1448 .get_session_param = iscsi_session_get_param,
1449 .get_host_param = qedi_host_get_param,
1450 .send_pdu = iscsi_conn_send_pdu,
1451 .get_stats = qedi_conn_get_stats,
1452 .xmit_task = qedi_task_xmit,
1453 .cleanup_task = qedi_cleanup_task,
1454 .session_recovery_timedout = iscsi_session_recovery_timedout,
1455 .ep_connect = qedi_ep_connect,
1456 .ep_poll = qedi_ep_poll,
1457 .ep_disconnect = qedi_ep_disconnect,
1458 .set_path = qedi_set_path,
1459 .attr_is_visible = qedi_attr_is_visible,
1462 void qedi_start_conn_recovery(struct qedi_ctx *qedi,
1463 struct qedi_conn *qedi_conn)
1465 struct iscsi_cls_session *cls_sess;
1466 struct iscsi_cls_conn *cls_conn;
1467 struct iscsi_conn *conn;
1469 cls_conn = qedi_conn->cls_conn;
1470 conn = cls_conn->dd_data;
1471 cls_sess = iscsi_conn_to_session(cls_conn);
1473 if (iscsi_is_session_online(cls_sess)) {
1474 qedi_conn->abrt_conn = 1;
1475 QEDI_ERR(&qedi->dbg_ctx,
1476 "Failing connection, state=0x%x, cid=0x%x\n",
1477 conn->session->state, qedi_conn->iscsi_conn_id);
1478 iscsi_conn_failure(qedi_conn->cls_conn->dd_data,
1479 ISCSI_ERR_CONN_FAILED);
1483 static const struct {
1484 enum iscsi_error_types error_code;
1486 } qedi_iscsi_error[] = {
1487 { ISCSI_STATUS_NONE,
1490 { ISCSI_CONN_ERROR_TASK_CID_MISMATCH,
1493 { ISCSI_CONN_ERROR_TASK_NOT_VALID,
1496 { ISCSI_CONN_ERROR_RQ_RING_IS_FULL,
1499 { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL,
1502 { ISCSI_CONN_ERROR_HQE_CACHING_FAILED,
1503 "sge caching failed"
1505 { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR,
1508 { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR,
1511 { ISCSI_CONN_ERROR_DATA_OVERRUN,
1514 { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR,
1517 { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR,
1518 "tcp ip fragment error"
1520 { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN,
1521 "AHS len protocol error"
1523 { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE,
1524 "itt out of range error"
1526 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE,
1527 "data seg more than pdu size"
1529 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE,
1532 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE,
1533 "invalid opcode before update"
1535 { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL,
1538 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA,
1539 "r2t carries no data"
1541 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN,
1544 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT,
1547 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT,
1550 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET,
1551 "buffer offset error"
1553 { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO,
1556 { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN,
1559 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0,
1560 "data xer len error"
1562 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1,
1563 "data xer len1 error"
1565 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2,
1566 "data xer len2 error"
1568 { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN,
1569 "protocol lun error"
1571 { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO,
1574 { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN,
1577 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO,
1578 "dsl not zero error"
1580 { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL,
1583 { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG,
1584 "data seg len too big"
1586 { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT,
1587 "outstanding r2t count error"
1589 { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
1590 "sense datalen error"
1594 static char *qedi_get_iscsi_error(enum iscsi_error_types err_code)
1599 for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) {
1600 if (qedi_iscsi_error[i].error_code == err_code) {
1601 msg = qedi_iscsi_error[i].err_string;
1608 void qedi_process_iscsi_error(struct qedi_endpoint *ep,
1609 struct iscsi_eqe_data *data)
1611 struct qedi_conn *qedi_conn;
1612 struct qedi_ctx *qedi;
1613 char warn_notice[] = "iscsi_warning";
1614 char error_notice[] = "iscsi_error";
1615 char unknown_msg[] = "Unknown error";
1617 int need_recovery = 0;
1624 qedi_conn = ep->conn;
1630 QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n",
1635 message = warn_notice;
1638 message = error_notice;
1641 msg = qedi_get_iscsi_error(data->error_code);
1647 iscsi_conn_printk(KERN_ALERT,
1648 qedi_conn->cls_conn->dd_data,
1649 "qedi: %s - %s\n", message, msg);
1652 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1655 void qedi_clear_session_ctx(struct iscsi_cls_session *cls_sess)
1657 struct iscsi_session *session = cls_sess->dd_data;
1658 struct iscsi_conn *conn = session->leadconn;
1659 struct qedi_conn *qedi_conn = conn->dd_data;
1661 if (iscsi_is_session_online(cls_sess))
1662 qedi_ep_disconnect(qedi_conn->iscsi_ep);
1664 qedi_conn_destroy(qedi_conn->cls_conn);
1666 qedi_session_destroy(cls_sess);
1669 void qedi_process_tcp_error(struct qedi_endpoint *ep,
1670 struct iscsi_eqe_data *data)
1672 struct qedi_conn *qedi_conn;
1677 qedi_conn = ep->conn;
1681 QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n",
1684 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);