/** * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection * @cls_session: pointer to iscsi cls session * @cls_conn: pointer to iscsi cls conn * @transport_fd: EP handle(64 bit) * * This function binds the TCP Conn with iSCSI Connection and Session. */ int beiscsi_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 beiscsi_conn *beiscsi_conn = conn->dd_data; struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct beiscsi_hba *phba = iscsi_host_priv(shost); struct beiscsi_endpoint *beiscsi_ep; struct iscsi_endpoint *ep; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_bind\n"); ep = iscsi_lookup_endpoint(transport_fd); if (!ep) return -EINVAL; beiscsi_ep = ep->dd_data; if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) return -EINVAL; if (beiscsi_ep->phba != phba) { SE_DEBUG(DBG_LVL_8, "beiscsi_ep->hba=%p not equal to phba=%p\n", beiscsi_ep->phba, phba); return -EEXIST; } beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; beiscsi_conn->ep = beiscsi_ep; beiscsi_ep->conn = beiscsi_conn; SE_DEBUG(DBG_LVL_8, "beiscsi_conn=%p conn=%p ep_cid=%d\n", beiscsi_conn, conn, beiscsi_ep->ep_cid); return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid); }
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; }
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; }
/** * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection * @cls_session: pointer to iscsi cls session * @cls_conn: pointer to iscsi cls conn * @transport_fd: EP handle(64 bit) * * This function binds the TCP Conn with iSCSI Connection and Session. */ int beiscsi_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 beiscsi_conn *beiscsi_conn = conn->dd_data; struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct beiscsi_hba *phba = iscsi_host_priv(shost); struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr; struct hwi_wrb_context *pwrb_context; struct beiscsi_endpoint *beiscsi_ep; struct iscsi_endpoint *ep; uint16_t cri_index; ep = iscsi_lookup_endpoint(transport_fd); if (!ep) return -EINVAL; beiscsi_ep = ep->dd_data; if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) return -EINVAL; if (beiscsi_ep->phba != phba) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", beiscsi_ep->phba, phba); return -EEXIST; } cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); if (phba->conn_table[cri_index]) { if (beiscsi_conn != phba->conn_table[cri_index] || beiscsi_ep != phba->conn_table[cri_index]->ep) { __beiscsi_log(phba, KERN_ERR, "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n", cri_index, beiscsi_ep->ep_cid, beiscsi_conn, phba->conn_table[cri_index]); return -EINVAL; } } beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; beiscsi_conn->ep = beiscsi_ep; beiscsi_ep->conn = beiscsi_conn; /** * Each connection is associated with a WRBQ kept in wrb_context. * Store doorbell offset for transmit path. */ pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : cid %d phba->conn_table[%u]=%p\n", beiscsi_ep->ep_cid, cri_index, beiscsi_conn); phba->conn_table[cri_index] = beiscsi_conn; return 0; }
/** * iscsi_iser_conn_bind() - bind iscsi and iser connection structures * @cls_session: iscsi class session * @cls_conn: iscsi class connection * @transport_eph: transport end-point handle * @is_leading: indicate if this is the session leading connection (MCS) * * Return: zero on success, $error if iscsi_conn_bind fails and * -EINVAL in case end-point doesn't exsits anymore or iser connection * state is not UP (teardown already started). */ 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 iser_conn *iser_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; } iser_conn = ep->dd_data; mutex_lock(&iser_conn->state_mutex); if (iser_conn->state != ISER_CONN_UP) { error = -EINVAL; iser_err("iser_conn %p state is %d, teardown started\n", iser_conn, iser_conn->state); goto out; } error = iser_alloc_rx_descriptors(iser_conn, conn->session); if (error) goto out; /* binds the iSER connection retrieved from the previously * connected ep_handle to the iSCSI layer connection. exchanges * connection pointers */ iser_info("binding iscsi conn %p to iser_conn %p\n", conn, iser_conn); conn->dd_data = iser_conn; iser_conn->iscsi_conn = conn; out: mutex_unlock(&iser_conn->state_mutex); return error; }
/** * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection * @cls_session: pointer to iscsi cls session * @cls_conn: pointer to iscsi cls conn * @transport_fd: EP handle(64 bit) * * This function binds the TCP Conn with iSCSI Connection and Session. */ int beiscsi_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 beiscsi_conn *beiscsi_conn = conn->dd_data; struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); struct beiscsi_hba *phba = iscsi_host_priv(shost); struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr; struct hwi_wrb_context *pwrb_context; struct beiscsi_endpoint *beiscsi_ep; struct iscsi_endpoint *ep; ep = iscsi_lookup_endpoint(transport_fd); if (!ep) return -EINVAL; beiscsi_ep = ep->dd_data; if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) return -EINVAL; if (beiscsi_ep->phba != phba) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", beiscsi_ep->phba, phba); return -EEXIST; } pwrb_context = &phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID( beiscsi_ep->ep_cid)]; beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; beiscsi_conn->ep = beiscsi_ep; beiscsi_ep->conn = beiscsi_conn; beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n", beiscsi_conn, conn, beiscsi_ep->ep_cid); return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid); }