/** * 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); }
/** * beiscsi_session_create - creates a new iscsi session * @cmds_max: max commands supported * @qdepth: max queue depth supported * @initial_cmdsn: initial iscsi CMDSN */ struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep, u16 cmds_max, u16 qdepth, u32 initial_cmdsn) { struct Scsi_Host *shost; struct beiscsi_endpoint *beiscsi_ep; struct iscsi_cls_session *cls_session; struct beiscsi_hba *phba; struct iscsi_session *sess; struct beiscsi_session *beiscsi_sess; struct beiscsi_io_task *io_task; SE_DEBUG(DBG_LVL_8, "In beiscsi_session_create\n"); if (!ep) { SE_DEBUG(DBG_LVL_1, "beiscsi_session_create: invalid ep\n"); return NULL; } beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; shost = phba->shost; if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) { shost_printk(KERN_ERR, shost, "Cannot handle %d cmds." "Max cmds per session supported is %d. Using %d. " "\n", cmds_max, beiscsi_ep->phba->params.wrbs_per_cxn, beiscsi_ep->phba->params.wrbs_per_cxn); cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn; } cls_session = iscsi_session_setup(&beiscsi_iscsi_transport, shost, cmds_max, sizeof(*beiscsi_sess), sizeof(*io_task), initial_cmdsn, ISCSI_MAX_TARGET); if (!cls_session) return NULL; sess = cls_session->dd_data; beiscsi_sess = sess->dd_data; beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool", phba->pcidev, sizeof(struct be_cmd_bhs), 64, 0); if (!beiscsi_sess->bhs_pool) goto destroy_sess; return cls_session; destroy_sess: iscsi_session_teardown(cls_session); return NULL; }
/** * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table * @beiscsi_conn: The pointer to beiscsi_conn structure * @phba: The phba instance * @cid: The cid to free */ static int beiscsi_bindconn_cid(struct beiscsi_hba *phba, struct beiscsi_conn *beiscsi_conn, unsigned int cid) { if (phba->conn_table[cid]) { SE_DEBUG(DBG_LVL_1, "Connection table already occupied. Detected clash\n"); return -EINVAL; } else { SE_DEBUG(DBG_LVL_8, "phba->conn_table[%d]=%p(beiscsi_conn)\n", cid, beiscsi_conn); phba->conn_table[cid] = beiscsi_conn; } return 0; }
unsigned int beiscsi_get_boot_target(struct beiscsi_hba *phba) { struct be_ctrl_info *ctrl = &phba->ctrl; struct be_mcc_wrb *wrb; struct be_cmd_req_get_mac_addr *req; unsigned int tag = 0; SE_DEBUG(DBG_LVL_8, "In bescsi_get_boot_target\n"); spin_lock(&ctrl->mbox_lock); tag = alloc_mcc_tag(phba); if (!tag) { spin_unlock(&ctrl->mbox_lock); return tag; } wrb = wrb_from_mccq(phba); req = embedded_payload(wrb); wrb->tag0 |= tag; be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI, OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET, sizeof(*req)); be_mcc_notify(phba); spin_unlock(&ctrl->mbox_lock); return tag; }
/** * beiscsi_conn_create - create an instance of iscsi connection * @cls_session: ptr to iscsi_cls_session * @cid: iscsi cid */ struct iscsi_cls_conn * beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid) { struct beiscsi_hba *phba; struct Scsi_Host *shost; struct iscsi_cls_conn *cls_conn; struct beiscsi_conn *beiscsi_conn; struct iscsi_conn *conn; struct iscsi_session *sess; struct beiscsi_session *beiscsi_sess; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_create ,cid" "from iscsi layer=%d\n", cid); shost = iscsi_session_to_shost(cls_session); phba = iscsi_host_priv(shost); cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid); if (!cls_conn) return NULL; conn = cls_conn->dd_data; beiscsi_conn = conn->dd_data; beiscsi_conn->ep = NULL; beiscsi_conn->phba = phba; beiscsi_conn->conn = conn; sess = cls_session->dd_data; beiscsi_sess = sess->dd_data; beiscsi_conn->beiscsi_sess = beiscsi_sess; return cls_conn; }
int beiscsi_set_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param, char *buf, int buflen) { struct iscsi_conn *conn = cls_conn->dd_data; struct iscsi_session *session = conn->session; int ret; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_set_param, param= %d\n", param); ret = iscsi2_set_param(cls_conn, param, buf, buflen); if (ret) return ret; /* * If userspace tried to set the value to higher than we can * support override here. */ switch (param) { case ISCSI_PARAM_FIRST_BURST: if (session->first_burst > 8192) session->first_burst = 8192; break; case ISCSI_PARAM_MAX_RECV_DLENGTH: if (conn->max_recv_dlength > 65536) conn->max_recv_dlength = 65536; break; case ISCSI_PARAM_MAX_BURST: if (session->max_burst > 262144) session->max_burst = 262144; break; default: return 0; } return 0; }
/** * beiscsi_conn_get_param - get the iscsi parameter * @cls_conn: pointer to iscsi cls conn * @param: parameter type identifier * @buf: buffer pointer * * returns iscsi parameter */ int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn, enum iscsi_param param, char *buf) { struct beiscsi_endpoint *beiscsi_ep; struct iscsi_conn *conn = cls_conn->dd_data; struct beiscsi_conn *beiscsi_conn = conn->dd_data; int len = 0; beiscsi_ep = beiscsi_conn->ep; if (!beiscsi_ep) { SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_get_param , no beiscsi_ep\n"); return -1; } switch (param) { case ISCSI_PARAM_CONN_PORT: len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport); break; case ISCSI_PARAM_CONN_ADDRESS: if (beiscsi_ep->ip_type == BE2_IPV4) len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); else len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); break; default: return iscsi2_conn_get_param(cls_conn, param, buf); } return len; }
unsigned char mgmt_invalidate_connection(struct beiscsi_hba *phba, struct beiscsi_endpoint *beiscsi_ep, unsigned short cid, unsigned short issue_reset, unsigned short savecfg_flag) { struct be_ctrl_info *ctrl = &phba->ctrl; struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); struct iscsi_invalidate_connection_params_in *req = embedded_payload(wrb); int status = 0; spin_lock(&ctrl->mbox_lock); memset(wrb, 0, sizeof(*wrb)); be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI, OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION, sizeof(*req)); req->session_handle = beiscsi_ep->fw_handle; req->cid = cid; if (issue_reset) req->cleanup_type = CMD_ISCSI_CONNECTION_ISSUE_TCP_RST; else req->cleanup_type = CMD_ISCSI_CONNECTION_INVALIDATE; req->save_cfg = savecfg_flag; status = be_mbox_notify(ctrl); if (status) SE_DEBUG(DBG_LVL_1, "Invalidation Failed\n"); spin_unlock(&ctrl->mbox_lock); return status; }
unsigned char mgmt_check_supported_fw(struct be_ctrl_info *ctrl) { struct be_dma_mem nonemb_cmd; struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); struct be_mgmt_controller_attributes *req; struct be_sge *sge = nonembedded_sgl(wrb); int status = 0; nonemb_cmd.va = pci_alloc_consistent(ctrl->pdev, sizeof(struct be_mgmt_controller_attributes), &nonemb_cmd.dma); if (nonemb_cmd.va == NULL) { SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for mgmt_check_supported_fw" "\n"); return -1; } nonemb_cmd.size = sizeof(struct be_mgmt_controller_attributes); req = nonemb_cmd.va; spin_lock(&ctrl->mbox_lock); memset(wrb, 0, sizeof(*wrb)); be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, OPCODE_COMMON_GET_CNTL_ATTRIBUTES, sizeof(*req)); sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd.dma)); sge->pa_lo = cpu_to_le32(nonemb_cmd.dma & 0xFFFFFFFF); sge->len = cpu_to_le32(nonemb_cmd.size); status = be_mbox_notify(ctrl); if (!status) { struct be_mgmt_controller_attributes_resp *resp = nonemb_cmd.va; SE_DEBUG(DBG_LVL_8, "Firmware version of CMD: %s\n", resp->params.hba_attribs.flashrom_version_string); SE_DEBUG(DBG_LVL_8, "Firmware version is : %s\n", resp->params.hba_attribs.firmware_version_string); SE_DEBUG(DBG_LVL_8, "Developer Build, not performing version check...\n"); } else SE_DEBUG(DBG_LVL_1, " Failed in mgmt_check_supported_fw\n"); if (nonemb_cmd.va) pci_free_consistent(ctrl->pdev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); spin_unlock(&ctrl->mbox_lock); return status; }
unsigned char mgmt_invalidate_icds(struct beiscsi_hba *phba, unsigned int icd, unsigned int cid) { struct be_dma_mem nonemb_cmd; struct be_ctrl_info *ctrl = &phba->ctrl; struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); struct be_sge *sge = nonembedded_sgl(wrb); struct invalidate_commands_params_in *req; int status = 0; nonemb_cmd.va = pci_alloc_consistent(ctrl->pdev, sizeof(struct invalidate_commands_params_in), &nonemb_cmd.dma); if (nonemb_cmd.va == NULL) { SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for" "mgmt_invalidate_icds \n"); return -1; } nonemb_cmd.size = sizeof(struct invalidate_commands_params_in); req = nonemb_cmd.va; spin_lock(&ctrl->mbox_lock); memset(wrb, 0, sizeof(*wrb)); be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI, OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS, sizeof(*req)); req->ref_handle = 0; req->cleanup_type = CMD_ISCSI_COMMAND_INVALIDATE; req->icd_count = 0; req->table[req->icd_count].icd = icd; req->table[req->icd_count].cid = cid; sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd.dma)); sge->pa_lo = cpu_to_le32(nonemb_cmd.dma & 0xFFFFFFFF); sge->len = cpu_to_le32(nonemb_cmd.size); status = be_mbox_notify(ctrl); if (status) SE_DEBUG(DBG_LVL_1, "ICDS Invalidation Failed\n"); spin_unlock(&ctrl->mbox_lock); if (nonemb_cmd.va) pci_free_consistent(ctrl->pdev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); return status; }
/** * beiscsi_ep_connect - Ask chip to create TCP Conn * @scsi_host: Pointer to scsi_host structure * @dst_addr: The IP address of Target * @non_blocking: blocking or non-blocking call * * This routines first asks chip to create a connection and then allocates an EP */ struct iscsi_endpoint * beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, int non_blocking) { struct beiscsi_hba *phba; struct beiscsi_endpoint *beiscsi_ep; struct iscsi_endpoint *ep; int ret; SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_connect\n"); if (shost) phba = iscsi_host_priv(shost); else { ret = -ENXIO; SE_DEBUG(DBG_LVL_1, "shost is NULL\n"); return ERR_PTR(ret); } if (phba->state != BE_ADAPTER_UP) { ret = -EBUSY; SE_DEBUG(DBG_LVL_1, "The Adapter state is Not UP\n"); return ERR_PTR(ret); } ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint)); if (!ep) { ret = -ENOMEM; return ERR_PTR(ret); } beiscsi_ep = ep->dd_data; beiscsi_ep->phba = phba; beiscsi_ep->openiscsi_ep = ep; ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking); if (ret) { SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn\n"); goto free_ep; } return ep; free_ep: iscsi_destroy_endpoint(ep); return ERR_PTR(ret); }
/** * beiscsi_open_conn - Ask FW to open a TCP connection * @ep: endpoint to be used * @src_addr: The source IP address * @dst_addr: The Destination IP address * * Asks the FW to open a TCP connection */ static int beiscsi_open_conn(struct iscsi_endpoint *ep, struct sockaddr *src_addr, struct sockaddr *dst_addr, int non_blocking) { struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; struct beiscsi_hba *phba = beiscsi_ep->phba; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; struct be_mcc_wrb *wrb; struct tcp_connect_and_offload_out *ptcpcnct_out; unsigned short status, extd_status; unsigned int tag, wrb_num; int ret = -1; SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n"); beiscsi_ep->ep_cid = beiscsi_get_cid(phba); if (beiscsi_ep->ep_cid == 0xFFFF) { SE_DEBUG(DBG_LVL_1, "No free cid available\n"); return ret; } SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d ", beiscsi_ep->ep_cid); phba->ep_array[beiscsi_ep->ep_cid - phba->fw_config.iscsi_cid_start] = ep; if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start + phba->params.cxns_per_ctrl * 2)) { SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n"); return ret; } beiscsi_ep->cid_vld = 0; tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep); if (!tag) { SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed for cid=%d \n", beiscsi_ep->ep_cid); } else { wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); } wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16; extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8; status = phba->ctrl.mcc_numtag[tag] & 0x000000FF; if (status || extd_status) { SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed" " status = %d extd_status = %d \n", status, extd_status); free_mcc_tag(&phba->ctrl, tag); return -1; } else { wrb = queue_get_wrb(mccq, wrb_num); free_mcc_tag(&phba->ctrl, tag); ptcpcnct_out = embedded_payload(wrb); beiscsi_ep = ep->dd_data; beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; beiscsi_ep->cid_vld = 1; SE_DEBUG(DBG_LVL_8, "mgmt_open_connection Success\n"); } return 0; }
/** * beiscsi_session_destroy - destroys iscsi session * @cls_session: pointer to iscsi cls session * * Destroys iSCSI session instance and releases * resources allocated for it. */ void beiscsi_session_destroy(struct iscsi_cls_session *cls_session) { struct iscsi_session *sess = cls_session->dd_data; struct beiscsi_session *beiscsi_sess = sess->dd_data; SE_DEBUG(DBG_LVL_8, "In beiscsi_session_destroy\n"); pci_pool_destroy(beiscsi_sess->bhs_pool); iscsi_session_teardown(cls_session); }
/** * beiscsi_get_host_param - get the iscsi parameter * @shost: pointer to scsi_host structure * @param: parameter type identifier * @buf: buffer pointer * * returns host parameter */ int beiscsi_get_host_param(struct Scsi_Host *shost, enum iscsi_host_param param, char *buf) { struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost); struct be_cmd_resp_get_mac_addr *resp; struct be_mcc_wrb *wrb; unsigned int tag, wrb_num; int len = 0; unsigned short status, extd_status; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param); switch (param) { case ISCSI_HOST_PARAM_HWADDRESS: tag = be_cmd_get_mac_addr(phba); if (!tag) { SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed \n"); return -1; } else wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16; extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8; status = phba->ctrl.mcc_numtag[tag] & 0x000000FF; if (status || extd_status) { SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed" " status = %d extd_status = %d \n", status, extd_status); free_mcc_tag(&phba->ctrl, tag); return -1; } else { wrb = queue_get_wrb(mccq, wrb_num); free_mcc_tag(&phba->ctrl, tag); resp = embedded_payload(wrb); memcpy(phba->mac_address, resp->mac_address, ETH_ALEN); len = frmt_macaddr(buf, PAGE_SIZE, (const unsigned char *)phba->mac_address, ETH_ALEN); } break; default: return iscsi2_host_get_param(shost, param, buf); } return len; }
/** * beiscsi_ep_poll - Poll to see if connection is established * @ep: endpoint to be used * @timeout_ms: timeout specified in millisecs * * Poll to see if TCP connection established */ int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) { struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_poll\n"); if (beiscsi_ep->cid_vld == 1) return 1; else return 0; }
/** * beiscsi_conn_start - offload of session to chip * @cls_conn: pointer to beiscsi_conn */ int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn) { struct iscsi_conn *conn = cls_conn->dd_data; struct beiscsi_conn *beiscsi_conn = conn->dd_data; struct beiscsi_endpoint *beiscsi_ep; struct beiscsi_offload_params params; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_start\n"); memset(¶ms, 0, sizeof(struct beiscsi_offload_params)); beiscsi_ep = beiscsi_conn->ep; if (!beiscsi_ep) SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_start , no beiscsi_ep\n"); beiscsi_conn->login_in_progress = 0; beiscsi_set_params_for_offld(beiscsi_conn, ¶ms); beiscsi_offload_connection(beiscsi_conn, ¶ms); iscsi_conn_start(cls_conn); return 0; }
/** * beiscsi_ep_disconnect - Tears down the TCP connection * @ep: endpoint to be used * * Tears down the TCP connection */ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) { struct beiscsi_conn *beiscsi_conn; struct beiscsi_endpoint *beiscsi_ep; struct beiscsi_hba *phba; unsigned int tag; unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH; beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect for ep_cid = %d\n", beiscsi_ep->ep_cid); if (!beiscsi_ep->conn) { SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect, no " "beiscsi_ep\n"); return; } beiscsi_conn = beiscsi_ep->conn; iscsi_suspend_queue(beiscsi_conn->conn); SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect ep_cid = %d\n", beiscsi_ep->ep_cid); tag = mgmt_invalidate_connection(phba, beiscsi_ep, beiscsi_ep->ep_cid, 1, savecfg_flag); if (!tag) { SE_DEBUG(DBG_LVL_1, "mgmt_invalidate_connection Failed for cid=%d\n", beiscsi_ep->ep_cid); } else { wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); free_mcc_tag(&phba->ctrl, tag); } beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL); beiscsi_free_ep(beiscsi_ep); beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid); iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); }
/** * beiscsi_get_host_param - get the iscsi parameter * @shost: pointer to scsi_host structure * @param: parameter type identifier * @buf: buffer pointer * * returns host parameter */ int beiscsi_get_host_param(struct Scsi_Host *shost, enum iscsi_host_param param, char *buf) { struct beiscsi_hba *phba = iscsi_host_priv(shost); int status = 0; SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param); switch (param) { case ISCSI_HOST_PARAM_HWADDRESS: status = beiscsi_get_macaddr(buf, phba); if (status < 0) { SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n"); return status; } break; default: return iscsi_host_get_param(shost, param, buf); } return status; }
/** * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table * @phba: The phba instance * @cid: The cid to free */ static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba, unsigned int cid) { if (phba->conn_table[cid]) phba->conn_table[cid] = NULL; else { SE_DEBUG(DBG_LVL_8, "Connection table Not occupied.\n"); return -EINVAL; } return 0; }
int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba) { struct be_cmd_resp_get_mac_addr *resp; struct be_mcc_wrb *wrb; unsigned int tag, wrb_num; unsigned short status, extd_status; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; int rc; if (phba->read_mac_address) return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); tag = be_cmd_get_mac_addr(phba); if (!tag) { SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n"); return -EBUSY; } else wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16; extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8; status = phba->ctrl.mcc_numtag[tag] & 0x000000FF; if (status || extd_status) { SE_DEBUG(DBG_LVL_1, "Failed to get be_cmd_get_mac_addr" " status = %d extd_status = %d\n", status, extd_status); free_mcc_tag(&phba->ctrl, tag); return -EAGAIN; } wrb = queue_get_wrb(mccq, wrb_num); free_mcc_tag(&phba->ctrl, tag); resp = embedded_payload(wrb); memcpy(phba->mac_address, resp->mac_address, ETH_ALEN); rc = sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); phba->read_mac_address = 1; return rc; }
/** * beiscsi_conn_stop - Invalidate and stop the connection * @cls_conn: pointer to get iscsi_conn * @flag: The type of connection closure */ void beiscsi_conn_stop(struct iscsi_cls_conn *cls_conn, int flag) { struct iscsi_conn *conn = cls_conn->dd_data; struct beiscsi_conn *beiscsi_conn = conn->dd_data; struct beiscsi_endpoint *beiscsi_ep; struct iscsi_session *session = conn->session; struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session); struct beiscsi_hba *phba = iscsi_host_priv(shost); unsigned int tag; unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH; beiscsi_ep = beiscsi_conn->ep; if (!beiscsi_ep) { SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop , no beiscsi_ep\n"); return; } SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop ep_cid = %d\n", beiscsi_ep->ep_cid); tag = mgmt_invalidate_connection(phba, beiscsi_ep, beiscsi_ep->ep_cid, 0, savecfg_flag); if (!tag) { SE_DEBUG(DBG_LVL_1, "mgmt_invalidate_connection Failed for cid=%d \n", beiscsi_ep->ep_cid); } else { wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); free_mcc_tag(&phba->ctrl, tag); } beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL); beiscsi_free_ep(beiscsi_ep); iscsi2_destroy_endpoint(beiscsi_ep->openiscsi_ep); SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop for ep_cid = %d\n", beiscsi_ep->ep_cid); beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid); iscsi2_conn_stop(cls_conn, flag); }
/** * beiscsi_ep_disconnect - Tears down the TCP connection * @ep: endpoint to be used * * Tears down the TCP connection */ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) { struct beiscsi_conn *beiscsi_conn; struct beiscsi_endpoint *beiscsi_ep; struct beiscsi_hba *phba; beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect for ep_cid = %d\n", beiscsi_ep->ep_cid); if (beiscsi_ep->conn) { beiscsi_conn = beiscsi_ep->conn; } }
/** * beiscsi_close_conn - Upload the connection * @ep: The iscsi endpoint * @flag: The type of connection closure */ static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag) { int ret = 0; unsigned int tag; struct beiscsi_hba *phba = beiscsi_ep->phba; tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag); if (!tag) { SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x\n", beiscsi_ep->ep_cid); ret = -EAGAIN; } else { wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); free_mcc_tag(&phba->ctrl, tag); } return ret; }
int mgmt_get_fw_config(struct be_ctrl_info *ctrl, struct beiscsi_hba *phba) { struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); struct be_fw_cfg *req = embedded_payload(wrb); int status = 0; spin_lock(&ctrl->mbox_lock); memset(wrb, 0, sizeof(*wrb)); be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, OPCODE_COMMON_QUERY_FIRMWARE_CONFIG, sizeof(*req)); status = be_mbox_notify(ctrl); if (!status) { struct be_fw_cfg *pfw_cfg; pfw_cfg = req; phba->fw_config.phys_port = pfw_cfg->phys_port; phba->fw_config.iscsi_icd_start = pfw_cfg->ulp[0].icd_base; phba->fw_config.iscsi_icd_count = pfw_cfg->ulp[0].icd_count; phba->fw_config.iscsi_cid_start = pfw_cfg->ulp[0].sq_base; phba->fw_config.iscsi_cid_count = pfw_cfg->ulp[0].sq_count; if (phba->fw_config.iscsi_cid_count > (BE2_MAX_SESSIONS / 2)) { SE_DEBUG(DBG_LVL_8, "FW reported MAX CXNS as %d\t" "Max Supported = %d.\n", phba->fw_config.iscsi_cid_count, BE2_MAX_SESSIONS); phba->fw_config.iscsi_cid_count = BE2_MAX_SESSIONS / 2; } } else { shost_printk(KERN_WARNING, phba->shost, "Failed in mgmt_get_fw_config\n"); } spin_unlock(&ctrl->mbox_lock); return status; }
unsigned int beiscsi_get_session_info(struct beiscsi_hba *phba, u32 boot_session_handle, struct be_dma_mem *nonemb_cmd) { struct be_ctrl_info *ctrl = &phba->ctrl; struct be_mcc_wrb *wrb; unsigned int tag = 0; struct be_cmd_req_get_session *req; struct be_cmd_resp_get_session *resp; struct be_sge *sge; SE_DEBUG(DBG_LVL_8, "In beiscsi_get_session_info\n"); spin_lock(&ctrl->mbox_lock); tag = alloc_mcc_tag(phba); if (!tag) { spin_unlock(&ctrl->mbox_lock); return tag; } nonemb_cmd->size = sizeof(*resp); req = nonemb_cmd->va; memset(req, 0, sizeof(*req)); wrb = wrb_from_mccq(phba); sge = nonembedded_sgl(wrb); wrb->tag0 |= tag; wrb->tag0 |= tag; be_wrb_hdr_prepare(wrb, sizeof(*req), false, 1); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI, OPCODE_ISCSI_INI_SESSION_GET_A_SESSION, sizeof(*resp)); req->session_handle = boot_session_handle; sge->pa_hi = cpu_to_le32(upper_32_bits(nonemb_cmd->dma)); sge->pa_lo = cpu_to_le32(nonemb_cmd->dma & 0xFFFFFFFF); sge->len = cpu_to_le32(nonemb_cmd->size); be_mcc_notify(phba); spin_unlock(&ctrl->mbox_lock); return tag; }
/** * beiscsi_conn_get_stats - get the iscsi stats * @cls_conn: pointer to iscsi cls conn * @stats: pointer to iscsi_stats structure * * returns iscsi stats */ void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, struct iscsi_stats *stats) { struct iscsi_conn *conn = cls_conn->dd_data; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_stats\n"); stats->txdata_octets = conn->txdata_octets; stats->rxdata_octets = conn->rxdata_octets; stats->dataout_pdus = conn->dataout_pdus_cnt; stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; stats->datain_pdus = conn->datain_pdus_cnt; stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; stats->r2t_pdus = conn->r2t_pdus_cnt; stats->digest_err = 0; stats->timeout_err = 0; stats->custom_length = 0; strcpy(stats->custom[0].desc, "eh_abort_cnt"); stats->custom[0].value = conn->eh_abort_cnt; }
unsigned char mgmt_upload_connection(struct beiscsi_hba *phba, unsigned short cid, unsigned int upload_flag) { struct be_ctrl_info *ctrl = &phba->ctrl; struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem); struct tcp_upload_params_in *req = embedded_payload(wrb); int status = 0; spin_lock(&ctrl->mbox_lock); memset(wrb, 0, sizeof(*wrb)); be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0); be_cmd_hdr_prepare(&req->hdr, CMD_COMMON_TCP_UPLOAD, OPCODE_COMMON_TCP_UPLOAD, sizeof(*req)); req->id = (unsigned short)cid; req->upload_type = (unsigned char)upload_flag; status = be_mbox_notify(ctrl); if (status) SE_DEBUG(DBG_LVL_1, "mgmt_upload_connection Failed\n"); spin_unlock(&ctrl->mbox_lock); return status; }
/** * beiscsi_ep_get_param - get the iscsi parameter * @ep: pointer to iscsi ep * @param: parameter type identifier * @buf: buffer pointer * * returns iscsi parameter */ int beiscsi_ep_get_param(struct iscsi_endpoint *ep, enum iscsi_param param, char *buf) { struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; int len = 0; SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_param, param= %d\n", param); switch (param) { case ISCSI_PARAM_CONN_PORT: len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport); break; case ISCSI_PARAM_CONN_ADDRESS: if (beiscsi_ep->ip_type == BE2_IPV4) len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); else len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); break; default: return -ENOSYS; } return len; }
/** * beiscsi_open_conn - Ask FW to open a TCP connection * @ep: endpoint to be used * @src_addr: The source IP address * @dst_addr: The Destination IP address * * Asks the FW to open a TCP connection */ static int beiscsi_open_conn(struct iscsi_endpoint *ep, struct sockaddr *src_addr, struct sockaddr *dst_addr, int non_blocking) { struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; struct beiscsi_hba *phba = beiscsi_ep->phba; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; struct be_mcc_wrb *wrb; struct tcp_connect_and_offload_out *ptcpcnct_out; unsigned short status, extd_status; struct be_dma_mem nonemb_cmd; unsigned int tag, wrb_num; int ret = -ENOMEM; SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n"); beiscsi_ep->ep_cid = beiscsi_get_cid(phba); if (beiscsi_ep->ep_cid == 0xFFFF) { SE_DEBUG(DBG_LVL_1, "No free cid available\n"); return ret; } SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d\n", beiscsi_ep->ep_cid); phba->ep_array[beiscsi_ep->ep_cid - phba->fw_config.iscsi_cid_start] = ep; if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start + phba->params.cxns_per_ctrl * 2)) { SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n"); goto free_ep; } beiscsi_ep->cid_vld = 0; nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, sizeof(struct tcp_connect_and_offload_in), &nonemb_cmd.dma); if (nonemb_cmd.va == NULL) { SE_DEBUG(DBG_LVL_1, "Failed to allocate memory for mgmt_open_connection" "\n"); beiscsi_put_cid(phba, beiscsi_ep->ep_cid); return -ENOMEM; } nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in); memset(nonemb_cmd.va, 0, nonemb_cmd.size); tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd); if (!tag) { SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed for cid=%d\n", beiscsi_ep->ep_cid); beiscsi_put_cid(phba, beiscsi_ep->ep_cid); pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); return -EAGAIN; } else { wait_event_interruptible(phba->ctrl.mcc_wait[tag], phba->ctrl.mcc_numtag[tag]); } wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16; extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8; status = phba->ctrl.mcc_numtag[tag] & 0x000000FF; if (status || extd_status) { SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed" " status = %d extd_status = %d\n", status, extd_status); free_mcc_tag(&phba->ctrl, tag); pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); goto free_ep; } else { wrb = queue_get_wrb(mccq, wrb_num); free_mcc_tag(&phba->ctrl, tag); ptcpcnct_out = embedded_payload(wrb); beiscsi_ep = ep->dd_data; beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; beiscsi_ep->cid_vld = 1; SE_DEBUG(DBG_LVL_8, "mgmt_open_connection Success\n"); } pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); return 0; free_ep: beiscsi_free_ep(beiscsi_ep); return -EBUSY; }