// SPDX-License-Identifier: GPL-2.0-only /* * QLogic iSCSI Offload Driver * Copyright (c) 2016 Cavium Inc. */ #include #include #include #include #include #include "qedi.h" #include "qedi_iscsi.h" #include "qedi_gbl.h" int qedi_recover_all_conns(struct qedi_ctx *qedi) { struct qedi_conn *qedi_conn; int i; for (i = 0; i < qedi->max_active_conns; i++) { qedi_conn = qedi_get_conn_from_id(qedi, i); if (!qedi_conn) continue; qedi_start_conn_recovery(qedi, qedi_conn); } return SUCCESS; } static int qedi_eh_host_reset(struct scsi_cmnd *cmd) { struct Scsi_Host *shost = cmd->device->host; struct qedi_ctx *qedi; qedi = iscsi_host_priv(shost); return qedi_recover_all_conns(qedi); } struct scsi_host_template qedi_host_template = { .module = THIS_MODULE, .name = "QLogic QEDI 25/40/100Gb iSCSI Initiator Driver", .proc_name = QEDI_MODULE_NAME, .queuecommand = iscsi_queuecommand, .eh_timed_out = iscsi_eh_cmd_timed_out, .eh_abort_handler = iscsi_eh_abort, .eh_device_reset_handler = iscsi_eh_device_reset, .eh_target_reset_handler = iscsi_eh_recover_target, .eh_host_reset_handler = qedi_eh_host_reset, .target_alloc = iscsi_target_alloc, .change_queue_depth = scsi_change_queue_depth, .can_queue = QEDI_MAX_ISCSI_TASK, .this_id = -1, .sg_tablesize = QEDI_ISCSI_MAX_BDS_PER_CMD, .max_sectors = 0xffff, .dma_boundary = QEDI_HW_DMA_BOUNDARY, .cmd_per_lun = 128, .shost_attrs = qedi_shost_attrs, }; static void qedi_conn_free_login_resources(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn) { if (qedi_conn->gen_pdu.resp_bd_tbl) { dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, qedi_conn->gen_pdu.resp_bd_tbl, qedi_conn->gen_pdu.resp_bd_dma); qedi_conn->gen_pdu.resp_bd_tbl = NULL; } if (qedi_conn->gen_pdu.req_bd_tbl) { dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, qedi_conn->gen_pdu.req_bd_tbl, qedi_conn->gen_pdu.req_bd_dma); qedi_conn->gen_pdu.req_bd_tbl = NULL; } if (qedi_conn->gen_pdu.resp_buf) { dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, qedi_conn->gen_pdu.resp_buf, qedi_conn->gen_pdu.resp_dma_addr); qedi_conn->gen_pdu.resp_buf = NULL; } if (qedi_conn->gen_pdu.req_buf) { dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, qedi_conn->gen_pdu.req_buf, qedi_conn->gen_pdu.req_dma_addr); qedi_conn->gen_pdu.req_buf = NULL; } } static int qedi_conn_alloc_login_resources(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn) { qedi_conn->gen_pdu.req_buf = dma_alloc_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, &qedi_conn->gen_pdu.req_dma_addr, GFP_KERNEL); if (!qedi_conn->gen_pdu.req_buf) goto login_req_buf_failure; qedi_conn->gen_pdu.req_buf_size = 0; qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf; qedi_conn->gen_pdu.resp_buf = dma_alloc_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, &qedi_conn->gen_pdu.resp_dma_addr, GFP_KERNEL); if (!qedi_conn->gen_pdu.resp_buf) goto login_resp_buf_failure; qedi_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN; qedi_conn->gen_pdu.resp_wr_ptr = qedi_conn->gen_pdu.resp_buf; qedi_conn->gen_pdu.req_bd_tbl = dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, &qedi_conn->gen_pdu.req_bd_dma, GFP_KERNEL); if (!qedi_conn->gen_pdu.req_bd_tbl) goto login_req_bd_tbl_failure; qedi_conn->gen_pdu.resp_bd_tbl = dma_alloc_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, &qedi_conn->gen_pdu.resp_bd_dma, GFP_KERNEL); if (!qedi_conn->gen_pdu.resp_bd_tbl) goto login_resp_bd_tbl_failure; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_SESS, "Allocation successful, cid=0x%x\n", qedi_conn->iscsi_conn_id); return 0; login_resp_bd_tbl_failure: dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, qedi_conn->gen_pdu.req_bd_tbl, qedi_conn->gen_pdu.req_bd_dma); qedi_conn->gen_pdu.req_bd_tbl = NULL; login_req_bd_tbl_failure: dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, qedi_conn->gen_pdu.resp_buf, qedi_conn->gen_pdu.resp_dma_addr); qedi_conn->gen_pdu.resp_buf = NULL; login_resp_buf_failure: dma_free_coherent(&qedi->pdev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN, qedi_conn->gen_pdu.req_buf, qedi_conn->gen_pdu.req_dma_addr); qedi_conn->gen_pdu.req_buf = NULL; login_req_buf_failure: iscsi_conn_printk(KERN_ERR, qedi_conn->cls_conn->dd_data, "login resource alloc failed!!\n"); return -ENOMEM; } static void qedi_destroy_cmd_pool(struct qedi_ctx *qedi, struct iscsi_session *session) { int i; for (i = 0; i < session->cmds_max; i++) { struct iscsi_task *task = session->cmds[i]; struct qedi_cmd *cmd = task->dd_data; if (cmd->io_tbl.sge_tbl) dma_free_coherent(&qedi->pdev->dev, QEDI_ISCSI_MAX_BDS_PER_CMD * sizeof(struct scsi_sge), cmd->io_tbl.sge_tbl, cmd->io_tbl.sge_tbl_dma); if (cmd->sense_buffer) dma_free_coherent(&qedi->pdev->dev, SCSI_SENSE_BUFFERSIZE, cmd->sense_buffer, cmd->sense_buffer_dma); } } static int qedi_alloc_sget(struct qedi_ctx *qedi, struct iscsi_session *session, struct qedi_cmd *cmd) { struct qedi_io_bdt *io = &cmd->io_tbl; struct scsi_sge *sge; io->sge_tbl = dma_alloc_coherent(&qedi->pdev->dev, QEDI_ISCSI_MAX_BDS_PER_CMD * sizeof(*sge), &io->sge_tbl_dma, GFP_KERNEL); if (!io->sge_tbl) { iscsi_session_printk(KERN_ERR, session, "Could not allocate BD table.\n"); return -ENOMEM; } io->sge_valid = 0; return 0; } static int qedi_setup_cmd_pool(struct qedi_ctx *qedi, struct iscsi_session *session) { int i; for (i = 0; i < session->cmds_max; i++) { struct iscsi_task *task = session->cmds[i]; struct qedi_cmd *cmd = task->dd_data; task->hdr = &cmd->hdr; task->hdr_max = sizeof(struct iscsi_hdr); if (qedi_alloc_sget(qedi, session, cmd)) goto free_sgets; cmd->sense_buffer = dma_alloc_coherent(&qedi->pdev->dev, SCSI_SENSE_BUFFERSIZE, &cmd->sense_buffer_dma, GFP_KERNEL); if (!cmd->sense_buffer) goto free_sgets; } return 0; free_sgets: qedi_destroy_cmd_pool(qedi, session); return -ENOMEM; } static struct iscsi_cls_session * qedi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, u16 qdepth, uint32_t initial_cmdsn) { struct Scsi_Host *shost; struct iscsi_cls_session *cls_session; struct qedi_ctx *qedi; struct qedi_endpoint *qedi_ep; if (!ep) return NULL; qedi_ep = ep->dd_data; shost = qedi_ep->qedi->shost; qedi = iscsi_host_priv(shost); if (cmds_max > qedi->max_sqes) cmds_max = qedi->max_sqes; else if (cmds_max < QEDI_SQ_WQES_MIN) cmds_max = QEDI_SQ_WQES_MIN; cls_session = iscsi_session_setup(&qedi_iscsi_transport, shost, cmds_max, 0, sizeof(struct qedi_cmd), initial_cmdsn, ISCSI_MAX_TARGET); if (!cls_session) { QEDI_ERR(&qedi->dbg_ctx, "Failed to setup session for ep=%p\n", qedi_ep); return NULL; } if (qedi_setup_cmd_pool(qedi, cls_session->dd_data)) { QEDI_ERR(&qedi->dbg_ctx, "Failed to setup cmd pool for ep=%p\n", qedi_ep); goto session_teardown; } return cls_session; session_teardown: iscsi_session_teardown(cls_session); return NULL; } static void qedi_session_destroy(struct iscsi_cls_session *cls_session) { struct iscsi_session *session = cls_session->dd_data; struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct qedi_ctx *qedi = iscsi_host_priv(shost); qedi_destroy_cmd_pool(qedi, session); iscsi_session_teardown(cls_session); } static struct iscsi_cls_conn * qedi_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid) { struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct qedi_ctx *qedi = iscsi_host_priv(shost); struct iscsi_cls_conn *cls_conn; struct qedi_conn *qedi_conn; struct iscsi_conn *conn; cls_conn = iscsi_conn_setup(cls_session, sizeof(*qedi_conn), cid); if (!cls_conn) { QEDI_ERR(&qedi->dbg_ctx, "conn_new: iscsi conn setup failed, cid=0x%x, cls_sess=%p!\n", cid, cls_session); return NULL; } conn = cls_conn->dd_data; qedi_conn = conn->dd_data; qedi_conn->cls_conn = cls_conn; qedi_conn->qedi = qedi; qedi_conn->ep = NULL; qedi_conn->active_cmd_count = 0; INIT_LIST_HEAD(&qedi_conn->active_cmd_list); spin_lock_init(&qedi_conn->list_lock); if (qedi_conn_alloc_login_resources(qedi, qedi_conn)) { iscsi_conn_printk(KERN_ALERT, conn, "conn_new: login resc alloc failed, cid=0x%x, cls_sess=%p!!\n", cid, cls_session); goto free_conn; } return cls_conn; free_conn: iscsi_conn_teardown(cls_conn); return NULL; } void qedi_mark_device_missing(struct iscsi_cls_session *cls_session) { iscsi_block_session(cls_session); } void qedi_mark_device_available(struct iscsi_cls_session *cls_session) { iscsi_unblock_session(cls_session); } static int qedi_bind_conn_to_iscsi_cid(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn) { u32 iscsi_cid = qedi_conn->iscsi_conn_id; if (qedi->cid_que.conn_cid_tbl[iscsi_cid]) { iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, "conn bind - entry #%d not free\n", iscsi_cid); return -EBUSY; } qedi->cid_que.conn_cid_tbl[iscsi_cid] = qedi_conn; return 0; } struct qedi_conn *qedi_get_conn_from_id(struct qedi_ctx *qedi, u32 iscsi_cid) { if (!qedi->cid_que.conn_cid_tbl) { QEDI_ERR(&qedi->dbg_ctx, "missing conn<->cid table\n"); return NULL; } else if (iscsi_cid >= qedi->max_active_conns) { QEDI_ERR(&qedi->dbg_ctx, "wrong cid #%d\n", iscsi_cid); return NULL; } return qedi->cid_que.conn_cid_tbl[iscsi_cid]; } static int qedi_conn_bind(struct iscsi_cls_session *cls_session, struct iscsi_cls_conn *cls_conn, u64 transport_fd, int is_leading) { struct iscsi_conn *conn = cls_conn->dd_data; struct qedi_conn *qedi_conn = conn->dd_data; struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct qedi_ctx *qedi = iscsi_host_priv(shost); struct qedi_endpoint *qedi_ep; struct iscsi_endpoint *ep; ep = iscsi_lookup_endpoint(transport_fd); if (!ep) return -EINVAL; qedi_ep = ep->dd_data; if ((qedi_ep->state == EP_STATE_TCP_FIN_RCVD) || (qedi_ep->state == EP_STATE_TCP_RST_RCVD)) return -EINVAL; if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) return -EINVAL; qedi_ep->conn = qedi_conn; qedi_conn->ep = qedi_ep; qedi_conn->iscsi_conn_id = qedi_ep->iscsi_cid; qedi_conn->fw_cid = qedi_ep->fw_cid; qedi_conn->cmd_cleanup_req = 0; qedi_conn->cmd_cleanup_cmpl = 0; if (qedi_bind_conn_to_iscsi_cid(qedi, qedi_conn)) return -EINVAL; spin_lock_init(&qedi_conn->tmf_work_lock); INIT_LIST_HEAD(&qedi_conn->tmf_work_list); init_waitqueue_head(&qedi_conn->wait_queue); return 0; } static int qedi_iscsi_update_conn(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn) { struct qed_iscsi_params_update *conn_info; struct iscsi_cls_conn *cls_conn = qedi_conn->cls_conn; struct iscsi_conn *conn = cls_conn->dd_data; struct qedi_endpoint *qedi_ep; int rval; qedi_ep = qedi_conn->ep; conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); if (!conn_info) { QEDI_ERR(&qedi->dbg_ctx, "memory alloc failed\n"); return -ENOMEM; } conn_info->update_flag = 0; if (conn->hdrdgst_en) SET_FIELD(conn_info->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_HD_EN, true); if (conn->datadgst_en) SET_FIELD(conn_info->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_DD_EN, true); if (conn->session->initial_r2t_en) SET_FIELD(conn_info->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T, true); if (conn->session->imm_data_en) SET_FIELD(conn_info->update_flag, ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA, true); conn_info->max_seq_size = conn->session->max_burst; conn_info->max_recv_pdu_length = conn->max_recv_dlength; conn_info->max_send_pdu_length = conn->max_xmit_dlength; conn_info->first_seq_length = conn->session->first_burst; conn_info->exp_stat_sn = conn->exp_statsn; rval = qedi_ops->update_conn(qedi->cdev, qedi_ep->handle, conn_info); if (rval) { rval = -ENXIO; QEDI_ERR(&qedi->dbg_ctx, "Could not update connection\n"); } kfree(conn_info); return rval; } static u16 qedi_calc_mss(u16 pmtu, u8 is_ipv6, u8 tcp_ts_en, u8 vlan_en) { u16 mss = 0; u16 hdrs = TCP_HDR_LEN; if (is_ipv6) hdrs += IPV6_HDR_LEN; else hdrs += IPV4_HDR_LEN; mss = pmtu - hdrs; if (!mss) mss = DEF_MSS; return mss; } static int qedi_iscsi_offload_conn(struct qedi_endpoint *qedi_ep) { struct qedi_ctx *qedi = qedi_ep->qedi; struct qed_iscsi_params_offload *conn_info; int rval; int i; conn_info = kzalloc(sizeof(*conn_info), GFP_KERNEL); if (!conn_info) { QEDI_ERR(&qedi->dbg_ctx, "Failed to allocate memory ep=%p\n", qedi_ep); return -ENOMEM; } ether_addr_copy(conn_info->src.mac, qedi_ep->src_mac); ether_addr_copy(conn_info->dst.mac, qedi_ep->dst_mac); conn_info->src.ip[0] = ntohl(qedi_ep->src_addr[0]); conn_info->dst.ip[0] = ntohl(qedi_ep->dst_addr[0]); if (qedi_ep->ip_type == TCP_IPV4) { conn_info->ip_version = 0; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "After ntohl: src_addr=%pI4, dst_addr=%pI4\n", qedi_ep->src_addr, qedi_ep->dst_addr); } else { for (i = 1; i < 4; i++) { conn_info->src.ip[i] = ntohl(qedi_ep->src_addr[i]); conn_info->dst.ip[i] = ntohl(qedi_ep->dst_addr[i]); } conn_info->ip_version = 1; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "After ntohl: src_addr=%pI6, dst_addr=%pI6\n", qedi_ep->src_addr, qedi_ep->dst_addr); } conn_info->src.port = qedi_ep->src_port; conn_info->dst.port = qedi_ep->dst_port; conn_info->layer_code = ISCSI_SLOW_PATH_LAYER_CODE; conn_info->sq_pbl_addr = qedi_ep->sq_pbl_dma; conn_info->vlan_id = qedi_ep->vlan_id; SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_TS_EN, 1); SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_EN, 1); SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_DA_CNT_EN, 1); SET_FIELD(conn_info->tcp_flags, TCP_OFFLOAD_PARAMS_KA_EN, 1); conn_info->default_cq = (qedi_ep->fw_cid % qedi->num_queues); conn_info->ka_max_probe_cnt = DEF_KA_MAX_PROBE_COUNT; conn_info->dup_ack_theshold = 3; conn_info->rcv_wnd = 65535; conn_info->ss_thresh = 65535; conn_info->srtt = 300; conn_info->rtt_var = 150; conn_info->flow_label = 0; conn_info->ka_timeout = DEF_KA_TIMEOUT; conn_info->ka_interval = DEF_KA_INTERVAL; conn_info->max_rt_time = DEF_MAX_RT_TIME; conn_info->ttl = DEF_TTL; conn_info->tos_or_tc = DEF_TOS; conn_info->remote_port = qedi_ep->dst_port; conn_info->local_port = qedi_ep->src_port; conn_info->mss = qedi_calc_mss(qedi_ep->pmtu, (qedi_ep->ip_type == TCP_IPV6), 1, (qedi_ep->vlan_id != 0)); conn_info->cwnd = DEF_MAX_CWND * conn_info->mss; conn_info->rcv_wnd_scale = 4; conn_info->da_timeout_value = 200; conn_info->ack_frequency = 2; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Default cq index [%d], mss [%d]\n", conn_info->default_cq, conn_info->mss); rval = qedi_ops->offload_conn(qedi->cdev, qedi_ep->handle, conn_info); if (rval) QEDI_ERR(&qedi->dbg_ctx, "offload_conn returned %d, ep=%p\n", rval, qedi_ep); kfree(conn_info); return rval; } static int qedi_conn_start(struct iscsi_cls_conn *cls_conn) { struct iscsi_conn *conn = cls_conn->dd_data; struct qedi_conn *qedi_conn = conn->dd_data; struct qedi_ctx *qedi; int rval; qedi = qedi_conn->qedi; rval = qedi_iscsi_update_conn(qedi, qedi_conn); if (rval) { iscsi_conn_printk(KERN_ALERT, conn, "conn_start: FW offload conn failed.\n"); rval = -EINVAL; goto start_err; } clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags); qedi_conn->abrt_conn = 0; rval = iscsi_conn_start(cls_conn); if (rval) { iscsi_conn_printk(KERN_ALERT, conn, "iscsi_conn_start: FW offload conn failed!!\n"); } start_err: return rval; } static void qedi_conn_destroy(struct iscsi_cls_conn *cls_conn) { struct iscsi_conn *conn = cls_conn->dd_data; struct qedi_conn *qedi_conn = conn->dd_data; struct Scsi_Host *shost; struct qedi_ctx *qedi; shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); qedi = iscsi_host_priv(shost); qedi_conn_free_login_resources(qedi, qedi_conn); iscsi_conn_teardown(cls_conn); } static int qedi_ep_get_param(struct iscsi_endpoint *ep, enum iscsi_param param, char *buf) { struct qedi_endpoint *qedi_ep = ep->dd_data; int len; if (!qedi_ep) return -ENOTCONN; switch (param) { case ISCSI_PARAM_CONN_PORT: len = sprintf(buf, "%hu\n", qedi_ep->dst_port); break; case ISCSI_PARAM_CONN_ADDRESS: if (qedi_ep->ip_type == TCP_IPV4) len = sprintf(buf, "%pI4\n", qedi_ep->dst_addr); else len = sprintf(buf, "%pI6\n", qedi_ep->dst_addr); break; default: return -ENOTCONN; } return len; } static int qedi_host_get_param(struct Scsi_Host *shost, enum iscsi_host_param param, char *buf) { struct qedi_ctx *qedi; int len; qedi = iscsi_host_priv(shost); switch (param) { case ISCSI_HOST_PARAM_HWADDRESS: len = sysfs_format_mac(buf, qedi->mac, 6); break; case ISCSI_HOST_PARAM_NETDEV_NAME: len = sprintf(buf, "host%d\n", shost->host_no); break; case ISCSI_HOST_PARAM_IPADDRESS: if (qedi->ip_type == TCP_IPV4) len = sprintf(buf, "%pI4\n", qedi->src_ip); else len = sprintf(buf, "%pI6\n", qedi->src_ip); break; default: return iscsi_host_get_param(shost, param, buf); } return len; } static void qedi_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *stats) { struct iscsi_conn *conn = cls_conn->dd_data; struct qed_iscsi_stats iscsi_stats; struct Scsi_Host *shost; struct qedi_ctx *qedi; shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn)); qedi = iscsi_host_priv(shost); qedi_ops->get_stats(qedi->cdev, &iscsi_stats); conn->txdata_octets = iscsi_stats.iscsi_tx_bytes_cnt; conn->rxdata_octets = iscsi_stats.iscsi_rx_bytes_cnt; conn->dataout_pdus_cnt = (uint32_t)iscsi_stats.iscsi_tx_data_pdu_cnt; conn->datain_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_data_pdu_cnt; conn->r2t_pdus_cnt = (uint32_t)iscsi_stats.iscsi_rx_r2t_pdu_cnt; stats->txdata_octets = conn->txdata_octets; stats->rxdata_octets = conn->rxdata_octets; stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; stats->dataout_pdus = conn->dataout_pdus_cnt; stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; stats->datain_pdus = conn->datain_pdus_cnt; stats->r2t_pdus = conn->r2t_pdus_cnt; stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; stats->digest_err = 0; stats->timeout_err = 0; strcpy(stats->custom[0].desc, "eh_abort_cnt"); stats->custom[0].value = conn->eh_abort_cnt; stats->custom_length = 1; } static void qedi_iscsi_prep_generic_pdu_bd(struct qedi_conn *qedi_conn) { struct scsi_sge *bd_tbl; bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.req_bd_tbl; bd_tbl->sge_addr.hi = (u32)((u64)qedi_conn->gen_pdu.req_dma_addr >> 32); bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.req_dma_addr; bd_tbl->sge_len = qedi_conn->gen_pdu.req_wr_ptr - qedi_conn->gen_pdu.req_buf; bd_tbl = (struct scsi_sge *)qedi_conn->gen_pdu.resp_bd_tbl; bd_tbl->sge_addr.hi = (u32)((u64)qedi_conn->gen_pdu.resp_dma_addr >> 32); bd_tbl->sge_addr.lo = (u32)qedi_conn->gen_pdu.resp_dma_addr; bd_tbl->sge_len = ISCSI_DEF_MAX_RECV_SEG_LEN; } static int qedi_iscsi_send_generic_request(struct iscsi_task *task) { struct qedi_cmd *cmd = task->dd_data; struct qedi_conn *qedi_conn = cmd->conn; char *buf; int data_len; int rc = 0; qedi_iscsi_prep_generic_pdu_bd(qedi_conn); switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { case ISCSI_OP_LOGIN: qedi_send_iscsi_login(qedi_conn, task); break; case ISCSI_OP_NOOP_OUT: data_len = qedi_conn->gen_pdu.req_buf_size; buf = qedi_conn->gen_pdu.req_buf; if (data_len) rc = qedi_send_iscsi_nopout(qedi_conn, task, buf, data_len, 1); else rc = qedi_send_iscsi_nopout(qedi_conn, task, NULL, 0, 1); break; case ISCSI_OP_LOGOUT: rc = qedi_send_iscsi_logout(qedi_conn, task); break; case ISCSI_OP_SCSI_TMFUNC: rc = qedi_iscsi_abort_work(qedi_conn, task); break; case ISCSI_OP_TEXT: rc = qedi_send_iscsi_text(qedi_conn, task); break; default: iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, "unsupported op 0x%x\n", task->hdr->opcode); } return rc; } static int qedi_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task) { struct qedi_conn *qedi_conn = conn->dd_data; struct qedi_cmd *cmd = task->dd_data; memset(qedi_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN); qedi_conn->gen_pdu.req_buf_size = task->data_count; if (task->data_count) { memcpy(qedi_conn->gen_pdu.req_buf, task->data, task->data_count); qedi_conn->gen_pdu.req_wr_ptr = qedi_conn->gen_pdu.req_buf + task->data_count; } cmd->conn = conn->dd_data; cmd->scsi_cmd = NULL; return qedi_iscsi_send_generic_request(task); } static int qedi_task_xmit(struct iscsi_task *task) { struct iscsi_conn *conn = task->conn; struct qedi_conn *qedi_conn = conn->dd_data; struct qedi_cmd *cmd = task->dd_data; struct scsi_cmnd *sc = task->sc; cmd->state = 0; cmd->task = NULL; cmd->use_slowpath = false; cmd->conn = qedi_conn; cmd->task = task; cmd->io_cmd_in_list = false; INIT_LIST_HEAD(&cmd->io_cmd); if (!sc) return qedi_mtask_xmit(conn, task); cmd->scsi_cmd = sc; return qedi_iscsi_send_ioreq(task); } static void qedi_offload_work(struct work_struct *work) { struct qedi_endpoint *qedi_ep = container_of(work, struct qedi_endpoint, offload_work); struct qedi_ctx *qedi; int wait_delay = 5 * HZ; int ret; qedi = qedi_ep->qedi; ret = qedi_iscsi_offload_conn(qedi_ep); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "offload error: iscsi_cid=%u, qedi_ep=%p, ret=%d\n", qedi_ep->iscsi_cid, qedi_ep, ret); qedi_ep->state = EP_STATE_OFLDCONN_FAILED; return; } ret = wait_event_interruptible_timeout(qedi_ep->tcp_ofld_wait, (qedi_ep->state == EP_STATE_OFLDCONN_COMPL), wait_delay); if (ret <= 0 || qedi_ep->state != EP_STATE_OFLDCONN_COMPL) { qedi_ep->state = EP_STATE_OFLDCONN_FAILED; QEDI_ERR(&qedi->dbg_ctx, "Offload conn TIMEOUT iscsi_cid=%u, qedi_ep=%p\n", qedi_ep->iscsi_cid, qedi_ep); } } static struct iscsi_endpoint * qedi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, int non_blocking) { struct qedi_ctx *qedi; struct iscsi_endpoint *ep; struct qedi_endpoint *qedi_ep; struct sockaddr_in *addr; struct sockaddr_in6 *addr6; struct iscsi_path path_req; u32 msg_type = ISCSI_KEVENT_IF_DOWN; u32 iscsi_cid = QEDI_CID_RESERVED; u16 len = 0; char *buf = NULL; int ret, tmp; if (!shost) { ret = -ENXIO; QEDI_ERR(NULL, "shost is NULL\n"); return ERR_PTR(ret); } if (qedi_do_not_recover) { ret = -ENOMEM; return ERR_PTR(ret); } qedi = iscsi_host_priv(shost); if (test_bit(QEDI_IN_OFFLINE, &qedi->flags) || test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { ret = -ENOMEM; return ERR_PTR(ret); } ep = iscsi_create_endpoint(sizeof(struct qedi_endpoint)); if (!ep) { QEDI_ERR(&qedi->dbg_ctx, "endpoint create fail\n"); ret = -ENOMEM; return ERR_PTR(ret); } qedi_ep = ep->dd_data; memset(qedi_ep, 0, sizeof(struct qedi_endpoint)); INIT_WORK(&qedi_ep->offload_work, qedi_offload_work); qedi_ep->state = EP_STATE_IDLE; qedi_ep->iscsi_cid = (u32)-1; qedi_ep->qedi = qedi; if (dst_addr->sa_family == AF_INET) { addr = (struct sockaddr_in *)dst_addr; memcpy(qedi_ep->dst_addr, &addr->sin_addr.s_addr, sizeof(struct in_addr)); qedi_ep->dst_port = ntohs(addr->sin_port); qedi_ep->ip_type = TCP_IPV4; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "dst_addr=%pI4, dst_port=%u\n", qedi_ep->dst_addr, qedi_ep->dst_port); } else if (dst_addr->sa_family == AF_INET6) { addr6 = (struct sockaddr_in6 *)dst_addr; memcpy(qedi_ep->dst_addr, &addr6->sin6_addr, sizeof(struct in6_addr)); qedi_ep->dst_port = ntohs(addr6->sin6_port); qedi_ep->ip_type = TCP_IPV6; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "dst_addr=%pI6, dst_port=%u\n", qedi_ep->dst_addr, qedi_ep->dst_port); } else { QEDI_ERR(&qedi->dbg_ctx, "Invalid endpoint\n"); } if (atomic_read(&qedi->link_state) != QEDI_LINK_UP) { QEDI_WARN(&qedi->dbg_ctx, "qedi link down\n"); ret = -ENXIO; goto ep_conn_exit; } ret = qedi_alloc_sq(qedi, qedi_ep); if (ret) goto ep_conn_exit; ret = qedi_ops->acquire_conn(qedi->cdev, &qedi_ep->handle, &qedi_ep->fw_cid, &qedi_ep->p_doorbell); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "Could not acquire connection\n"); ret = -ENXIO; goto ep_free_sq; } iscsi_cid = qedi_ep->handle; qedi_ep->iscsi_cid = iscsi_cid; init_waitqueue_head(&qedi_ep->ofld_wait); init_waitqueue_head(&qedi_ep->tcp_ofld_wait); qedi_ep->state = EP_STATE_OFLDCONN_START; qedi->ep_tbl[iscsi_cid] = qedi_ep; buf = (char *)&path_req; len = sizeof(path_req); memset(&path_req, 0, len); msg_type = ISCSI_KEVENT_PATH_REQ; path_req.handle = (u64)qedi_ep->iscsi_cid; path_req.pmtu = qedi->ll2_mtu; qedi_ep->pmtu = qedi->ll2_mtu; if (qedi_ep->ip_type == TCP_IPV4) { memcpy(&path_req.dst.v4_addr, &qedi_ep->dst_addr, sizeof(struct in_addr)); path_req.ip_addr_len = 4; } else { memcpy(&path_req.dst.v6_addr, &qedi_ep->dst_addr, sizeof(struct in6_addr)); path_req.ip_addr_len = 16; } ret = iscsi_offload_mesg(shost, &qedi_iscsi_transport, msg_type, buf, len); if (ret) { QEDI_ERR(&qedi->dbg_ctx, "iscsi_offload_mesg() failed for cid=0x%x ret=%d\n", iscsi_cid, ret); goto ep_rel_conn; } atomic_inc(&qedi->num_offloads); return ep; ep_rel_conn: qedi->ep_tbl[iscsi_cid] = NULL; tmp = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); if (tmp) QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d\n", tmp); ep_free_sq: qedi_free_sq(qedi, qedi_ep); ep_conn_exit: iscsi_destroy_endpoint(ep); return ERR_PTR(ret); } static int qedi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) { struct qedi_endpoint *qedi_ep; int ret = 0; if (qedi_do_not_recover) return 1; qedi_ep = ep->dd_data; if (qedi_ep->state == EP_STATE_IDLE || qedi_ep->state == EP_STATE_OFLDCONN_NONE || qedi_ep->state == EP_STATE_OFLDCONN_FAILED) return -1; if (qedi_ep->state == EP_STATE_OFLDCONN_COMPL) ret = 1; ret = wait_event_interruptible_timeout(qedi_ep->ofld_wait, QEDI_OFLD_WAIT_STATE(qedi_ep), msecs_to_jiffies(timeout_ms)); if (qedi_ep->state == EP_STATE_OFLDCONN_FAILED) ret = -1; if (ret > 0) return 1; else if (!ret) return 0; else return ret; } static void qedi_cleanup_active_cmd_list(struct qedi_conn *qedi_conn) { struct qedi_cmd *cmd, *cmd_tmp; spin_lock(&qedi_conn->list_lock); list_for_each_entry_safe(cmd, cmd_tmp, &qedi_conn->active_cmd_list, io_cmd) { list_del_init(&cmd->io_cmd); qedi_conn->active_cmd_count--; } spin_unlock(&qedi_conn->list_lock); } static void qedi_ep_disconnect(struct iscsi_endpoint *ep) { struct qedi_endpoint *qedi_ep; struct qedi_conn *qedi_conn = NULL; struct iscsi_conn *conn = NULL; struct qedi_ctx *qedi; int ret = 0; int wait_delay; int abrt_conn = 0; int count = 10; wait_delay = 60 * HZ + DEF_MAX_RT_TIME; qedi_ep = ep->dd_data; qedi = qedi_ep->qedi; flush_work(&qedi_ep->offload_work); if (qedi_ep->state == EP_STATE_OFLDCONN_START) goto ep_exit_recover; if (qedi_ep->conn) { qedi_conn = qedi_ep->conn; conn = qedi_conn->cls_conn->dd_data; iscsi_suspend_queue(conn); abrt_conn = qedi_conn->abrt_conn; while (count--) { if (!test_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags)) { break; } msleep(1000); } if (test_bit(QEDI_IN_RECOVERY, &qedi->flags)) { if (qedi_do_not_recover) { QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Do not recover cid=0x%x\n", qedi_ep->iscsi_cid); goto ep_exit_recover; } QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Reset recovery cid=0x%x, qedi_ep=%p, state=0x%x\n", qedi_ep->iscsi_cid, qedi_ep, qedi_ep->state); qedi_cleanup_active_cmd_list(qedi_conn); goto ep_release_conn; } } if (qedi_do_not_recover) goto ep_exit_recover; switch (qedi_ep->state) { case EP_STATE_OFLDCONN_START: case EP_STATE_OFLDCONN_NONE: goto ep_release_conn; case EP_STATE_OFLDCONN_FAILED: break; case EP_STATE_OFLDCONN_COMPL: if (unlikely(!qedi_conn)) break; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Active cmd count=%d, abrt_conn=%d, ep state=0x%x, cid=0x%x, qedi_conn=%p\n", qedi_conn->active_cmd_count, abrt_conn, qedi_ep->state, qedi_ep->iscsi_cid, qedi_ep->conn ); if (!qedi_conn->active_cmd_count) abrt_conn = 0; else abrt_conn = 1; if (abrt_conn) qedi_clearsq(qedi, qedi_conn, NULL); break; default: break; } if (!abrt_conn) wait_delay += qedi->pf_params.iscsi_pf_params.two_msl_timer; qedi_ep->state = EP_STATE_DISCONN_START; ret = qedi_ops->destroy_conn(qedi->cdev, qedi_ep->handle, abrt_conn); if (ret) { QEDI_WARN(&qedi->dbg_ctx, "destroy_conn failed returned %d\n", ret); } else { ret = wait_event_interruptible_timeout( qedi_ep->tcp_ofld_wait, (qedi_ep->state != EP_STATE_DISCONN_START), wait_delay); if ((ret <= 0) || (qedi_ep->state == EP_STATE_DISCONN_START)) { QEDI_WARN(&qedi->dbg_ctx, "Destroy conn timedout or interrupted, ret=%d, delay=%d, cid=0x%x\n", ret, wait_delay, qedi_ep->iscsi_cid); } } ep_release_conn: ret = qedi_ops->release_conn(qedi->cdev, qedi_ep->handle); if (ret) QEDI_WARN(&qedi->dbg_ctx, "release_conn returned %d, cid=0x%x\n", ret, qedi_ep->iscsi_cid); ep_exit_recover: qedi_ep->state = EP_STATE_IDLE; qedi->ep_tbl[qedi_ep->iscsi_cid] = NULL; qedi->cid_que.conn_cid_tbl[qedi_ep->iscsi_cid] = NULL; qedi_free_id(&qedi->lcl_port_tbl, qedi_ep->src_port); qedi_free_sq(qedi, qedi_ep); if (qedi_conn) qedi_conn->ep = NULL; qedi_ep->conn = NULL; qedi_ep->qedi = NULL; atomic_dec(&qedi->num_offloads); iscsi_destroy_endpoint(ep); } static int qedi_data_avail(struct qedi_ctx *qedi, u16 vlanid) { struct qed_dev *cdev = qedi->cdev; struct qedi_uio_dev *udev; struct qedi_uio_ctrl *uctrl; struct sk_buff *skb; u32 len; int rc = 0; udev = qedi->udev; if (!udev) { QEDI_ERR(&qedi->dbg_ctx, "udev is NULL.\n"); return -EINVAL; } uctrl = (struct qedi_uio_ctrl *)udev->uctrl; if (!uctrl) { QEDI_ERR(&qedi->dbg_ctx, "uctlr is NULL.\n"); return -EINVAL; } len = uctrl->host_tx_pkt_len; if (!len) { QEDI_ERR(&qedi->dbg_ctx, "Invalid len %u\n", len); return -EINVAL; } skb = alloc_skb(len, GFP_ATOMIC); if (!skb) { QEDI_ERR(&qedi->dbg_ctx, "alloc_skb failed\n"); return -EINVAL; } skb_put(skb, len); memcpy(skb->data, udev->tx_pkt, len); skb->ip_summed = CHECKSUM_NONE; if (vlanid) __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid); rc = qedi_ops->ll2->start_xmit(cdev, skb, 0); if (rc) { QEDI_ERR(&qedi->dbg_ctx, "ll2 start_xmit returned %d\n", rc); kfree_skb(skb); } uctrl->host_tx_pkt_len = 0; uctrl->hw_tx_cons++; return rc; } static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) { struct qedi_ctx *qedi; struct qedi_endpoint *qedi_ep; int ret = 0; u32 iscsi_cid; u16 port_id = 0; if (!shost) { ret = -ENXIO; QEDI_ERR(NULL, "shost is NULL\n"); return ret; } if (strcmp(shost->hostt->proc_name, "qedi")) { ret = -ENXIO; QEDI_ERR(NULL, "shost %s is invalid\n", shost->hostt->proc_name); return ret; } qedi = iscsi_host_priv(shost); if (path_data->handle == QEDI_PATH_HANDLE) { ret = qedi_data_avail(qedi, path_data->vlan_id); goto set_path_exit; } iscsi_cid = (u32)path_data->handle; if (iscsi_cid >= qedi->max_active_conns) { ret = -EINVAL; goto set_path_exit; } qedi_ep = qedi->ep_tbl[iscsi_cid]; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep); if (!qedi_ep) { ret = -EINVAL; goto set_path_exit; } if (!is_valid_ether_addr(&path_data->mac_addr[0])) { QEDI_NOTICE(&qedi->dbg_ctx, "dst mac NOT VALID\n"); qedi_ep->state = EP_STATE_OFLDCONN_NONE; ret = -EIO; goto set_path_exit; } ether_addr_copy(&qedi_ep->src_mac[0], &qedi->mac[0]); ether_addr_copy(&qedi_ep->dst_mac[0], &path_data->mac_addr[0]); qedi_ep->vlan_id = path_data->vlan_id; if (path_data->pmtu < DEF_PATH_MTU) { qedi_ep->pmtu = qedi->ll2_mtu; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "MTU cannot be %u, using default MTU %u\n", path_data->pmtu, qedi_ep->pmtu); } if (path_data->pmtu != qedi->ll2_mtu) { if (path_data->pmtu > JUMBO_MTU) { ret = -EINVAL; QEDI_ERR(NULL, "Invalid MTU %u\n", path_data->pmtu); goto set_path_exit; } qedi_reset_host_mtu(qedi, path_data->pmtu); qedi_ep->pmtu = qedi->ll2_mtu; } port_id = qedi_ep->src_port; if (port_id >= QEDI_LOCAL_PORT_MIN && port_id < QEDI_LOCAL_PORT_MAX) { if (qedi_alloc_id(&qedi->lcl_port_tbl, port_id)) port_id = 0; } else { port_id = 0; } if (!port_id) { port_id = qedi_alloc_new_id(&qedi->lcl_port_tbl); if (port_id == QEDI_LOCAL_PORT_INVALID) { QEDI_ERR(&qedi->dbg_ctx, "Failed to allocate port id for iscsi_cid=0x%x\n", iscsi_cid); ret = -ENOMEM; goto set_path_exit; } } qedi_ep->src_port = port_id; if (qedi_ep->ip_type == TCP_IPV4) { memcpy(&qedi_ep->src_addr[0], &path_data->src.v4_addr, sizeof(struct in_addr)); memcpy(&qedi->src_ip[0], &path_data->src.v4_addr, sizeof(struct in_addr)); qedi->ip_type = TCP_IPV4; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "src addr:port=%pI4:%u, dst addr:port=%pI4:%u\n", qedi_ep->src_addr, qedi_ep->src_port, qedi_ep->dst_addr, qedi_ep->dst_port); } else { memcpy(&qedi_ep->src_addr[0], &path_data->src.v6_addr, sizeof(struct in6_addr)); memcpy(&qedi->src_ip[0], &path_data->src.v6_addr, sizeof(struct in6_addr)); qedi->ip_type = TCP_IPV6; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "src addr:port=%pI6:%u, dst addr:port=%pI6:%u\n", qedi_ep->src_addr, qedi_ep->src_port, qedi_ep->dst_addr, qedi_ep->dst_port); } queue_work(qedi->offload_thread, &qedi_ep->offload_work); ret = 0; set_path_exit: return ret; } static umode_t qedi_attr_is_visible(int param_type, int param) { switch (param_type) { case ISCSI_HOST_PARAM: switch (param) { case ISCSI_HOST_PARAM_NETDEV_NAME: case ISCSI_HOST_PARAM_HWADDRESS: case ISCSI_HOST_PARAM_IPADDRESS: return 0444; default: return 0; } case ISCSI_PARAM: switch (param) { case ISCSI_PARAM_MAX_RECV_DLENGTH: case ISCSI_PARAM_MAX_XMIT_DLENGTH: case ISCSI_PARAM_HDRDGST_EN: case ISCSI_PARAM_DATADGST_EN: case ISCSI_PARAM_CONN_ADDRESS: case ISCSI_PARAM_CONN_PORT: case ISCSI_PARAM_EXP_STATSN: case ISCSI_PARAM_PERSISTENT_ADDRESS: case ISCSI_PARAM_PERSISTENT_PORT: case ISCSI_PARAM_PING_TMO: case ISCSI_PARAM_RECV_TMO: case ISCSI_PARAM_INITIAL_R2T_EN: case ISCSI_PARAM_MAX_R2T: case ISCSI_PARAM_IMM_DATA_EN: case ISCSI_PARAM_FIRST_BURST: case ISCSI_PARAM_MAX_BURST: case ISCSI_PARAM_PDU_INORDER_EN: case ISCSI_PARAM_DATASEQ_INORDER_EN: case ISCSI_PARAM_ERL: case ISCSI_PARAM_TARGET_NAME: case ISCSI_PARAM_TPGT: case ISCSI_PARAM_USERNAME: case ISCSI_PARAM_PASSWORD: case ISCSI_PARAM_USERNAME_IN: case ISCSI_PARAM_PASSWORD_IN: case ISCSI_PARAM_FAST_ABORT: case ISCSI_PARAM_ABORT_TMO: case ISCSI_PARAM_LU_RESET_TMO: case ISCSI_PARAM_TGT_RESET_TMO: case ISCSI_PARAM_IFACE_NAME: case ISCSI_PARAM_INITIATOR_NAME: case ISCSI_PARAM_BOOT_ROOT: case ISCSI_PARAM_BOOT_NIC: case ISCSI_PARAM_BOOT_TARGET: return 0444; default: return 0; } } return 0; } static void qedi_cleanup_task(struct iscsi_task *task) { if (!task->sc || task->state == ISCSI_TASK_PENDING) { QEDI_INFO(NULL, QEDI_LOG_IO, "Returning ref_cnt=%d\n", refcount_read(&task->refcount)); return; } qedi_iscsi_unmap_sg_list(task->dd_data); } struct iscsi_transport qedi_iscsi_transport = { .owner = THIS_MODULE, .name = QEDI_MODULE_NAME, .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD | CAP_TEXT_NEGO, .create_session = qedi_session_create, .destroy_session = qedi_session_destroy, .create_conn = qedi_conn_create, .bind_conn = qedi_conn_bind, .start_conn = qedi_conn_start, .stop_conn = iscsi_conn_stop, .destroy_conn = qedi_conn_destroy, .set_param = iscsi_set_param, .get_ep_param = qedi_ep_get_param, .get_conn_param = iscsi_conn_get_param, .get_session_param = iscsi_session_get_param, .get_host_param = qedi_host_get_param, .send_pdu = iscsi_conn_send_pdu, .get_stats = qedi_conn_get_stats, .xmit_task = qedi_task_xmit, .cleanup_task = qedi_cleanup_task, .session_recovery_timedout = iscsi_session_recovery_timedout, .ep_connect = qedi_ep_connect, .ep_poll = qedi_ep_poll, .ep_disconnect = qedi_ep_disconnect, .set_path = qedi_set_path, .attr_is_visible = qedi_attr_is_visible, }; void qedi_start_conn_recovery(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn) { struct iscsi_cls_session *cls_sess; struct iscsi_cls_conn *cls_conn; struct iscsi_conn *conn; cls_conn = qedi_conn->cls_conn; conn = cls_conn->dd_data; cls_sess = iscsi_conn_to_session(cls_conn); if (iscsi_is_session_online(cls_sess)) { qedi_conn->abrt_conn = 1; QEDI_ERR(&qedi->dbg_ctx, "Failing connection, state=0x%x, cid=0x%x\n", conn->session->state, qedi_conn->iscsi_conn_id); iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED); } } static const struct { enum iscsi_error_types error_code; char *err_string; } qedi_iscsi_error[] = { { ISCSI_STATUS_NONE, "tcp_error none" }, { ISCSI_CONN_ERROR_TASK_CID_MISMATCH, "task cid mismatch" }, { ISCSI_CONN_ERROR_TASK_NOT_VALID, "invalid task" }, { ISCSI_CONN_ERROR_RQ_RING_IS_FULL, "rq ring full" }, { ISCSI_CONN_ERROR_CMDQ_RING_IS_FULL, "cmdq ring full" }, { ISCSI_CONN_ERROR_HQE_CACHING_FAILED, "sge caching failed" }, { ISCSI_CONN_ERROR_HEADER_DIGEST_ERROR, "hdr digest error" }, { ISCSI_CONN_ERROR_LOCAL_COMPLETION_ERROR, "local cmpl error" }, { ISCSI_CONN_ERROR_DATA_OVERRUN, "invalid task" }, { ISCSI_CONN_ERROR_OUT_OF_SGES_ERROR, "out of sge error" }, { ISCSI_CONN_ERROR_TCP_IP_FRAGMENT_ERROR, "tcp ip fragment error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_AHS_LEN, "AHS len protocol error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_ITT_OUT_OF_RANGE, "itt out of range error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_EXCEEDS_PDU_SIZE, "data seg more than pdu size" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE, "invalid opcode" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_OPCODE_BEFORE_UPDATE, "invalid opcode before update" }, { ISCSI_CONN_ERROR_UNVALID_NOPIN_DSL, "unexpected opcode" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_CARRIES_NO_DATA, "r2t carries no data" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SN, "data sn error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_IN_TTT, "data TTT error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_TTT, "r2t TTT error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_BUFFER_OFFSET, "buffer offset error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_BUFFER_OFFSET_OOO, "buffer offset ooo" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_R2T_SN, "data seg len 0" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0, "data xer len error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1, "data xer len1 error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_2, "data xer len2 error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_LUN, "protocol lun error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_F_BIT_ZERO, "f bit zero error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_EXP_STAT_SN, "exp stat sn error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DSL_NOT_ZERO, "dsl not zero error" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_INVALID_DSL, "invalid dsl" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG, "data seg len too big" }, { ISCSI_CONN_ERROR_PROTOCOL_ERR_OUTSTANDING_R2T_COUNT, "outstanding r2t count error" }, { ISCSI_CONN_ERROR_SENSE_DATA_LENGTH, "sense datalen error" }, }; char *qedi_get_iscsi_error(enum iscsi_error_types err_code) { int i; char *msg = NULL; for (i = 0; i < ARRAY_SIZE(qedi_iscsi_error); i++) { if (qedi_iscsi_error[i].error_code == err_code) { msg = qedi_iscsi_error[i].err_string; break; } } return msg; } void qedi_process_iscsi_error(struct qedi_endpoint *ep, struct iscsi_eqe_data *data) { struct qedi_conn *qedi_conn; struct qedi_ctx *qedi; char warn_notice[] = "iscsi_warning"; char error_notice[] = "iscsi_error"; char unknown_msg[] = "Unknown error"; char *message; int need_recovery = 0; u32 err_mask = 0; char *msg; if (!ep) return; qedi_conn = ep->conn; if (!qedi_conn) return; qedi = ep->qedi; QEDI_ERR(&qedi->dbg_ctx, "async event iscsi error:0x%x\n", data->error_code); if (err_mask) { need_recovery = 0; message = warn_notice; } else { need_recovery = 1; message = error_notice; } msg = qedi_get_iscsi_error(data->error_code); if (!msg) { need_recovery = 0; msg = unknown_msg; } iscsi_conn_printk(KERN_ALERT, qedi_conn->cls_conn->dd_data, "qedi: %s - %s\n", message, msg); if (need_recovery) qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); } void qedi_process_tcp_error(struct qedi_endpoint *ep, struct iscsi_eqe_data *data) { struct qedi_conn *qedi_conn; if (!ep) return; qedi_conn = ep->conn; if (!qedi_conn) return; QEDI_ERR(&ep->qedi->dbg_ctx, "async event TCP error:0x%x\n", data->error_code); qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); }