static int iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, struct iscsi_cls_conn *cls_conn, uint64_t transport_eph, int is_leading) { struct iscsi_conn *conn = cls_conn->dd_data; struct iscsi_iser_conn *iser_conn; struct iser_conn *ib_conn; struct iscsi_endpoint *ep; int error; error = iscsi_conn_bind(cls_session, cls_conn, is_leading); if (error) return error; /* the transport ep handle comes from user space so it must be * verified against the global ib connections list */ ep = iscsi_lookup_endpoint(transport_eph); if (!ep) { iser_err("can't bind eph %llx\n", (unsigned long long)transport_eph); return -EINVAL; } ib_conn = ep->dd_data; /* binds the iSER connection retrieved from the previously * connected ep_handle to the iSCSI layer connection. exchanges * connection pointers */ iser_err("binding iscsi conn %p to iser_conn %p\n",conn,ib_conn); iser_conn = conn->dd_data; ib_conn->iser_conn = iser_conn; iser_conn->ib_conn = ib_conn; iser_conn_get(ib_conn); return 0; }
/** * starts the process of connecting to the target * sleeps untill the connection is established or rejected */ int iser_connect(struct iser_conn *ib_conn, struct sockaddr_in *src_addr, struct sockaddr_in *dst_addr, int non_blocking) { struct sockaddr *src, *dst; int err = 0; sprintf(ib_conn->name, "%pI4:%d", &dst_addr->sin_addr.s_addr, dst_addr->sin_port); /* the device is known only --after-- address resolution */ ib_conn->device = NULL; iser_err("connecting to: %pI4, port 0x%x\n", &dst_addr->sin_addr, dst_addr->sin_port); ib_conn->state = ISER_CONN_PENDING; iser_conn_get(ib_conn); /* ref ib conn's cma id */ ib_conn->cma_id = rdma_create_id(iser_cma_handler, (void *)ib_conn, RDMA_PS_TCP); if (IS_ERR(ib_conn->cma_id)) { err = PTR_ERR(ib_conn->cma_id); iser_err("rdma_create_id failed: %d\n", err); goto id_failure; } src = (struct sockaddr *)src_addr; dst = (struct sockaddr *)dst_addr; err = rdma_resolve_addr(ib_conn->cma_id, src, dst, 1000); if (err) { iser_err("rdma_resolve_addr failed: %d\n", err); goto addr_failure; } if (!non_blocking) { wait_event_interruptible(ib_conn->wait, (ib_conn->state != ISER_CONN_PENDING)); if (ib_conn->state != ISER_CONN_UP) { err = -EIO; goto connect_failure; } } mutex_lock(&ig.connlist_mutex); list_add(&ib_conn->conn_list, &ig.connlist); mutex_unlock(&ig.connlist_mutex); return 0; id_failure: ib_conn->cma_id = NULL; addr_failure: ib_conn->state = ISER_CONN_DOWN; connect_failure: iser_conn_release(ib_conn, 1); return err; }
static int iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session, struct iscsi_cls_conn *cls_conn, uint64_t transport_eph, int is_leading) { struct iscsi_conn *conn = cls_conn->dd_data; struct iscsi_iser_conn *iser_conn; struct iser_conn *ib_conn; struct iscsi_endpoint *ep; int error; error = iscsi_conn_bind(cls_session, cls_conn, is_leading); if (error) return error; ep = iscsi_lookup_endpoint(transport_eph); if (!ep) { iser_err("can't bind eph %llx\n", (unsigned long long)transport_eph); return -EINVAL; } ib_conn = ep->dd_data; iser_err("binding iscsi conn %p to iser_conn %p\n",conn,ib_conn); iser_conn = conn->dd_data; ib_conn->iser_conn = iser_conn; iser_conn->ib_conn = ib_conn; iser_conn_get(ib_conn); return 0; }