// SPDX-License-Identifier: GPL-2.0-only /* * This file is part of the Emulex Linux Device Driver for Enterprise iSCSI * Host Bus Adapters. Refer to the README file included with this package * for driver version and adapter compatibility. * * Copyright (c) 2018 Broadcom. All Rights Reserved. * The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries. * * Contact Information: * linux-drivers@broadcom.com */ #include #include #include #include #include #include #include #include #include #include "be_iscsi.h" extern struct iscsi_transport beiscsi_iscsi_transport; /** * beiscsi_session_create - creates a new iscsi session * @ep: pointer to iscsi ep * @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; if (!ep) { pr_err("beiscsi_session_create: invalid ep\n"); return NULL; } beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return NULL; } beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_session_create\n"); if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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; } shost = phba->shost; 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 = dma_pool_create("beiscsi_bhs_pool", &phba->pcidev->dev, 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_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; printk(KERN_INFO "In beiscsi_session_destroy\n"); dma_pool_destroy(beiscsi_sess->bhs_pool); iscsi_session_teardown(cls_session); } /** * beiscsi_session_fail(): Closing session with appropriate error * @cls_session: ptr to session **/ void beiscsi_session_fail(struct iscsi_cls_session *cls_session) { iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED); } /** * 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; shost = iscsi_session_to_shost(cls_session); phba = iscsi_host_priv(shost); beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_conn_create ,cid" "from iscsi layer=%d\n", cid); 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; } /** * 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) * @is_leading: indicate if this is the session leading connection (MCS) * * 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; } static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba) { if (phba->ipv4_iface) return 0; phba->ipv4_iface = iscsi_create_iface(phba->shost, &beiscsi_iscsi_transport, ISCSI_IFACE_TYPE_IPV4, 0, 0); if (!phba->ipv4_iface) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Could not " "create default IPv4 address.\n"); return -ENODEV; } return 0; } static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba) { if (phba->ipv6_iface) return 0; phba->ipv6_iface = iscsi_create_iface(phba->shost, &beiscsi_iscsi_transport, ISCSI_IFACE_TYPE_IPV6, 0, 0); if (!phba->ipv6_iface) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Could not " "create default IPv6 address.\n"); return -ENODEV; } return 0; } void beiscsi_iface_create_default(struct beiscsi_hba *phba) { struct be_cmd_get_if_info_resp *if_info; if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) { beiscsi_iface_create_ipv4(phba); kfree(if_info); } if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) { beiscsi_iface_create_ipv6(phba); kfree(if_info); } } void beiscsi_iface_destroy_default(struct beiscsi_hba *phba) { if (phba->ipv6_iface) { iscsi_destroy_iface(phba->ipv6_iface); phba->ipv6_iface = NULL; } if (phba->ipv4_iface) { iscsi_destroy_iface(phba->ipv4_iface); phba->ipv4_iface = NULL; } } /** * beiscsi_iface_config_vlan()- Set the VLAN TAG * @shost: Scsi Host for the driver instance * @iface_param: Interface paramters * * Set the VLAN TAG for the adapter or disable * the VLAN config * * returns * Success: 0 * Failure: Non-Zero Value **/ static int beiscsi_iface_config_vlan(struct Scsi_Host *shost, struct iscsi_iface_param_info *iface_param) { struct beiscsi_hba *phba = iscsi_host_priv(shost); int ret = -EPERM; switch (iface_param->param) { case ISCSI_NET_PARAM_VLAN_ENABLED: ret = 0; if (iface_param->value[0] != ISCSI_VLAN_ENABLE) ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE); break; case ISCSI_NET_PARAM_VLAN_TAG: ret = beiscsi_if_set_vlan(phba, *((uint16_t *)iface_param->value)); break; } return ret; } static int beiscsi_iface_config_ipv4(struct Scsi_Host *shost, struct iscsi_iface_param_info *info, void *data, uint32_t dt_len) { struct beiscsi_hba *phba = iscsi_host_priv(shost); u8 *ip = NULL, *subnet = NULL, *gw; struct nlattr *nla; int ret = -EPERM; /* Check the param */ switch (info->param) { case ISCSI_NET_PARAM_IFACE_ENABLE: if (info->value[0] == ISCSI_IFACE_ENABLE) ret = beiscsi_iface_create_ipv4(phba); else { iscsi_destroy_iface(phba->ipv4_iface); phba->ipv4_iface = NULL; } break; case ISCSI_NET_PARAM_IPV4_GW: gw = info->value; ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw); break; case ISCSI_NET_PARAM_IPV4_BOOTPROTO: if (info->value[0] == ISCSI_BOOTPROTO_DHCP) ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4); else if (info->value[0] == ISCSI_BOOTPROTO_STATIC) /* release DHCP IP address */ ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, NULL, NULL); else beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Invalid BOOTPROTO: %d\n", info->value[0]); break; case ISCSI_NET_PARAM_IPV4_ADDR: ip = info->value; nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); if (nla) { info = nla_data(nla); subnet = info->value; } ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, ip, subnet); break; case ISCSI_NET_PARAM_IPV4_SUBNET: /* * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP * and subnet both. Find IP to be applied for this subnet. */ subnet = info->value; nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); if (nla) { info = nla_data(nla); ip = info->value; } ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, ip, subnet); break; } return ret; } static int beiscsi_iface_config_ipv6(struct Scsi_Host *shost, struct iscsi_iface_param_info *iface_param, void *data, uint32_t dt_len) { struct beiscsi_hba *phba = iscsi_host_priv(shost); int ret = -EPERM; switch (iface_param->param) { case ISCSI_NET_PARAM_IFACE_ENABLE: if (iface_param->value[0] == ISCSI_IFACE_ENABLE) ret = beiscsi_iface_create_ipv6(phba); else { iscsi_destroy_iface(phba->ipv6_iface); phba->ipv6_iface = NULL; } break; case ISCSI_NET_PARAM_IPV6_ADDR: ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6, iface_param->value, NULL); break; } return ret; } int beiscsi_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t dt_len) { struct iscsi_iface_param_info *iface_param = NULL; struct beiscsi_hba *phba = iscsi_host_priv(shost); struct nlattr *attrib; uint32_t rm_len = dt_len; int ret; if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return -EBUSY; } /* update interface_handle */ ret = beiscsi_if_get_handle(phba); if (ret) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Getting Interface Handle Failed\n"); return ret; } nla_for_each_attr(attrib, data, dt_len, rm_len) { iface_param = nla_data(attrib); if (iface_param->param_type != ISCSI_NET_PARAM) continue; /* * BE2ISCSI only supports 1 interface */ if (iface_param->iface_num) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Invalid iface_num %d." "Only iface_num 0 is supported.\n", iface_param->iface_num); return -EINVAL; } beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : %s.0 set param %d", (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6", iface_param->param); ret = -EPERM; switch (iface_param->param) { case ISCSI_NET_PARAM_VLAN_ENABLED: case ISCSI_NET_PARAM_VLAN_TAG: ret = beiscsi_iface_config_vlan(shost, iface_param); break; default: switch (iface_param->iface_type) { case ISCSI_IFACE_TYPE_IPV4: ret = beiscsi_iface_config_ipv4(shost, iface_param, data, dt_len); break; case ISCSI_IFACE_TYPE_IPV6: ret = beiscsi_iface_config_ipv6(shost, iface_param, data, dt_len); break; } } if (ret == -EPERM) { __beiscsi_log(phba, KERN_ERR, "BS_%d : %s.0 set param %d not permitted", (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6", iface_param->param); ret = 0; } if (ret) break; } return ret; } static int __beiscsi_iface_get_param(struct beiscsi_hba *phba, struct iscsi_iface *iface, int param, char *buf) { struct be_cmd_get_if_info_resp *if_info; int len, ip_type = BEISCSI_IP_TYPE_V4; if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) ip_type = BEISCSI_IP_TYPE_V6; len = beiscsi_if_get_info(phba, ip_type, &if_info); if (len) return len; switch (param) { case ISCSI_NET_PARAM_IPV4_ADDR: len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr); break; case ISCSI_NET_PARAM_IPV6_ADDR: len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr); break; case ISCSI_NET_PARAM_IPV4_BOOTPROTO: if (!if_info->dhcp_state) len = sprintf(buf, "static\n"); else len = sprintf(buf, "dhcp\n"); break; case ISCSI_NET_PARAM_IPV4_SUBNET: len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask); break; case ISCSI_NET_PARAM_VLAN_ENABLED: len = sprintf(buf, "%s\n", (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ? "disable" : "enable"); break; case ISCSI_NET_PARAM_VLAN_ID: if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) len = -EINVAL; else len = sprintf(buf, "%d\n", (if_info->vlan_priority & ISCSI_MAX_VLAN_ID)); break; case ISCSI_NET_PARAM_VLAN_PRIORITY: if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) len = -EINVAL; else len = sprintf(buf, "%d\n", ((if_info->vlan_priority >> 13) & ISCSI_MAX_VLAN_PRIORITY)); break; default: WARN_ON(1); } kfree(if_info); return len; } int beiscsi_iface_get_param(struct iscsi_iface *iface, enum iscsi_param_type param_type, int param, char *buf) { struct Scsi_Host *shost = iscsi_iface_to_shost(iface); struct beiscsi_hba *phba = iscsi_host_priv(shost); struct be_cmd_get_def_gateway_resp gateway; int len = -EPERM; if (param_type != ISCSI_NET_PARAM) return 0; if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return -EBUSY; } switch (param) { case ISCSI_NET_PARAM_IPV4_ADDR: case ISCSI_NET_PARAM_IPV4_SUBNET: case ISCSI_NET_PARAM_IPV4_BOOTPROTO: case ISCSI_NET_PARAM_IPV6_ADDR: case ISCSI_NET_PARAM_VLAN_ENABLED: case ISCSI_NET_PARAM_VLAN_ID: case ISCSI_NET_PARAM_VLAN_PRIORITY: len = __beiscsi_iface_get_param(phba, iface, param, buf); break; case ISCSI_NET_PARAM_IFACE_ENABLE: if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) len = sprintf(buf, "%s\n", phba->ipv4_iface ? "enable" : "disable"); else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) len = sprintf(buf, "%s\n", phba->ipv6_iface ? "enable" : "disable"); break; case ISCSI_NET_PARAM_IPV4_GW: memset(&gateway, 0, sizeof(gateway)); len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway); if (!len) len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr); break; } return len; } /** * 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; beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_ep_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 == BEISCSI_IP_TYPE_V4) len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); else len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); break; default: len = -EPERM; } return len; } 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; struct beiscsi_hba *phba = NULL; int ret; phba = ((struct beiscsi_conn *)conn->dd_data)->phba; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_conn_set_param," " param= %d\n", param); ret = iscsi_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; case ISCSI_PARAM_MAX_XMIT_DLENGTH: if (conn->max_xmit_dlength > 65536) conn->max_xmit_dlength = 65536; fallthrough; default: return 0; } return 0; } /** * beiscsi_get_port_state - Get the Port State * @shost : pointer to scsi_host structure * */ static void beiscsi_get_port_state(struct Scsi_Host *shost) { struct beiscsi_hba *phba = iscsi_host_priv(shost); struct iscsi_cls_host *ihost = shost->shost_data; ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ? ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN; } /** * beiscsi_get_port_speed - Get the Port Speed from Adapter * @shost : pointer to scsi_host structure * */ static void beiscsi_get_port_speed(struct Scsi_Host *shost) { struct beiscsi_hba *phba = iscsi_host_priv(shost); struct iscsi_cls_host *ihost = shost->shost_data; switch (phba->port_speed) { case BE2ISCSI_LINK_SPEED_10MBPS: ihost->port_speed = ISCSI_PORT_SPEED_10MBPS; break; case BE2ISCSI_LINK_SPEED_100MBPS: ihost->port_speed = ISCSI_PORT_SPEED_100MBPS; break; case BE2ISCSI_LINK_SPEED_1GBPS: ihost->port_speed = ISCSI_PORT_SPEED_1GBPS; break; case BE2ISCSI_LINK_SPEED_10GBPS: ihost->port_speed = ISCSI_PORT_SPEED_10GBPS; break; case BE2ISCSI_LINK_SPEED_25GBPS: ihost->port_speed = ISCSI_PORT_SPEED_25GBPS; break; case BE2ISCSI_LINK_SPEED_40GBPS: ihost->port_speed = ISCSI_PORT_SPEED_40GBPS; break; default: ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN; } } /** * beiscsi_get_host_param - get the iscsi parameter * @shost: pointer to scsi_host structure * @param: parameter type identifier * @buf: buffer pointer * */ 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; if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return 0; } beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : beiscsi_get_macaddr Failed\n"); return 0; } break; case ISCSI_HOST_PARAM_INITIATOR_NAME: /* try fetching user configured name first */ status = beiscsi_get_initiator_name(phba, buf, true); if (status < 0) { status = beiscsi_get_initiator_name(phba, buf, false); if (status < 0) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Retrieving Initiator Name Failed\n"); status = 0; } } break; case ISCSI_HOST_PARAM_PORT_STATE: beiscsi_get_port_state(shost); status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost)); break; case ISCSI_HOST_PARAM_PORT_SPEED: beiscsi_get_port_speed(shost); status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost)); break; default: return iscsi_host_get_param(shost, param, buf); } return status; } int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba) { struct be_cmd_get_nic_conf_resp resp; int rc; if (phba->mac_addr_set) return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); memset(&resp, 0, sizeof(resp)); rc = mgmt_get_nic_conf(phba, &resp); if (rc) return rc; phba->mac_addr_set = true; memcpy(phba->mac_address, resp.mac_address, ETH_ALEN); return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); } /** * 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; struct beiscsi_hba *phba = NULL; phba = ((struct beiscsi_conn *)conn->dd_data)->phba; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : 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 = 1; strcpy(stats->custom[0].desc, "eh_abort_cnt"); stats->custom[0].value = conn->eh_abort_cnt; } /** * beiscsi_set_params_for_offld - get the parameters for offload * @beiscsi_conn: pointer to beiscsi_conn * @params: pointer to offload_params structure */ static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn, struct beiscsi_offload_params *params) { struct iscsi_conn *conn = beiscsi_conn->conn; struct iscsi_session *session = conn->session; AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length, params, session->max_burst); AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_send_data_segment_length, params, conn->max_xmit_dlength); AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length, params, session->first_burst); AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params, session->erl); AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params, conn->datadgst_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params, conn->hdrdgst_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params, session->initial_r2t_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params, session->imm_data_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, data_seq_inorder, params, session->dataseq_inorder_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, pdu_seq_inorder, params, session->pdu_inorder_en); AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params, session->max_r2t); AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params, (conn->exp_statsn - 1)); AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_recv_data_segment_length, params, conn->max_recv_dlength); } /** * 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; struct beiscsi_hba *phba; phba = ((struct beiscsi_conn *)conn->dd_data)->phba; if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return -EBUSY; } beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_conn_start\n"); memset(¶ms, 0, sizeof(struct beiscsi_offload_params)); beiscsi_ep = beiscsi_conn->ep; if (!beiscsi_ep) beiscsi_log(beiscsi_conn->phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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_get_cid - Allocate a cid * @phba: The phba instance */ static int beiscsi_get_cid(struct beiscsi_hba *phba) { uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1; unsigned short cid, cid_from_ulp; struct ulp_cid_info *cid_info; /* Find the ULP which has more CID available */ cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ? BEISCSI_ULP0_AVLBL_CID(phba) : 0; cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ? BEISCSI_ULP1_AVLBL_CID(phba) : 0; cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ? BEISCSI_ULP0 : BEISCSI_ULP1; /** * If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp * is ZERO for both, ULP 1 is returned. * Check if ULP is loaded before getting new CID. */ if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) return BE_INVALID_CID; cid_info = phba->cid_array_info[cid_from_ulp]; cid = cid_info->cid_array[cid_info->cid_alloc]; if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) { __beiscsi_log(phba, KERN_ERR, "BS_%d : failed to get cid: available %u:%u\n", cid_info->avlbl_cids, cid_info->cid_free); return BE_INVALID_CID; } /* empty the slot */ cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID; if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp)) cid_info->cid_alloc = 0; cid_info->avlbl_cids--; return cid; } /** * beiscsi_put_cid - Free the cid * @phba: The phba for which the cid is being freed * @cid: The cid to free */ static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid) { uint16_t cri_index = BE_GET_CRI_FROM_CID(cid); struct hwi_wrb_context *pwrb_context; struct hwi_controller *phwi_ctrlr; struct ulp_cid_info *cid_info; uint16_t cid_post_ulp; phwi_ctrlr = phba->phwi_ctrlr; pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; cid_post_ulp = pwrb_context->ulp_num; cid_info = phba->cid_array_info[cid_post_ulp]; /* fill only in empty slot */ if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) { __beiscsi_log(phba, KERN_ERR, "BS_%d : failed to put cid %u: available %u:%u\n", cid, cid_info->avlbl_cids, cid_info->cid_free); return; } cid_info->cid_array[cid_info->cid_free++] = cid; if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp)) cid_info->cid_free = 0; cid_info->avlbl_cids++; } /** * beiscsi_free_ep - free endpoint * @beiscsi_ep: pointer to device endpoint struct */ static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep) { struct beiscsi_hba *phba = beiscsi_ep->phba; struct beiscsi_conn *beiscsi_conn; beiscsi_put_cid(phba, beiscsi_ep->ep_cid); beiscsi_ep->phba = NULL; /* clear this to track freeing in beiscsi_ep_disconnect */ phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL; /** * Check if any connection resource allocated by driver * is to be freed.This case occurs when target redirection * or connection retry is done. **/ if (!beiscsi_ep->conn) return; beiscsi_conn = beiscsi_ep->conn; /** * Break ep->conn link here so that completions after * this are ignored. */ beiscsi_ep->conn = NULL; if (beiscsi_conn->login_in_progress) { beiscsi_free_mgmt_task_handles(beiscsi_conn, beiscsi_conn->task); beiscsi_conn->login_in_progress = 0; } } /** * beiscsi_open_conn - Ask FW to open a TCP connection * @ep: pointer to device endpoint struct * @src_addr: The source IP address * @dst_addr: The Destination IP address * @non_blocking: blocking or non-blocking call * * 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 tcp_connect_and_offload_out *ptcpcnct_out; struct be_dma_mem nonemb_cmd; unsigned int tag, req_memsize; int ret = -ENOMEM; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_open_conn\n"); beiscsi_ep->ep_cid = beiscsi_get_cid(phba); if (beiscsi_ep->ep_cid == BE_INVALID_CID) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : No free cid available\n"); return ret; } beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_open_conn, ep_cid=%d\n", beiscsi_ep->ep_cid); phba->ep_array[BE_GET_CRI_FROM_CID (beiscsi_ep->ep_cid)] = ep; beiscsi_ep->cid_vld = 0; if (is_chip_be2_be3r(phba)) req_memsize = sizeof(struct tcp_connect_and_offload_in); else req_memsize = sizeof(struct tcp_connect_and_offload_in_v1); nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev, req_memsize, &nonemb_cmd.dma, GFP_KERNEL); if (nonemb_cmd.va == NULL) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Failed to allocate memory for" " mgmt_open_connection\n"); beiscsi_free_ep(beiscsi_ep); return -ENOMEM; } nonemb_cmd.size = req_memsize; memset(nonemb_cmd.va, 0, nonemb_cmd.size); tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd); if (!tag) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : mgmt_open_connection Failed for cid=%d\n", beiscsi_ep->ep_cid); dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); beiscsi_free_ep(beiscsi_ep); return -EAGAIN; } ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd); if (ret) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, "BS_%d : mgmt_open_connection Failed"); if (ret != -EBUSY) dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); beiscsi_free_ep(beiscsi_ep); return ret; } ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va; beiscsi_ep = ep->dd_data; beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; beiscsi_ep->cid_vld = 1; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : mgmt_open_connection Success\n"); dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size, nonemb_cmd.va, nonemb_cmd.dma); return 0; } /** * beiscsi_ep_connect - Ask chip to create TCP Conn * @shost: 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; if (!shost) { ret = -ENXIO; pr_err("beiscsi_ep_connect shost is NULL\n"); return ERR_PTR(ret); } phba = iscsi_host_priv(shost); if (!beiscsi_hba_is_online(phba)) { ret = -EIO; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); return ERR_PTR(ret); } if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) { ret = -EBUSY; beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG, "BS_%d : The Adapter Port state is Down!!!\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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Failed in beiscsi_open_conn\n"); goto free_ep; } return ep; free_ep: iscsi_destroy_endpoint(ep); return ERR_PTR(ret); } /** * 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; beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_ep_poll\n"); if (beiscsi_ep->cid_vld == 1) return 1; else return 0; } /** * beiscsi_flush_cq()- Flush the CQ created. * @phba: ptr device priv structure. * * Before the connection resource are freed flush * all the CQ enteries **/ static void beiscsi_flush_cq(struct beiscsi_hba *phba) { uint16_t i; struct be_eq_obj *pbe_eq; struct hwi_controller *phwi_ctrlr; struct hwi_context_memory *phwi_context; phwi_ctrlr = phba->phwi_ctrlr; phwi_context = phwi_ctrlr->phwi_ctxt; for (i = 0; i < phba->num_cpus; i++) { pbe_eq = &phwi_context->be_eq[i]; irq_poll_disable(&pbe_eq->iopoll); beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC); irq_poll_enable(&pbe_eq->iopoll); } } /** * beiscsi_conn_close - Invalidate and upload connection * @beiscsi_ep: pointer to device endpoint struct * * Returns 0 on success, -1 on failure. */ static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep) { struct beiscsi_hba *phba = beiscsi_ep->phba; unsigned int tag, attempts; int ret; /** * Without successfully invalidating and uploading connection * driver can't reuse the CID so attempt more than once. */ attempts = 0; while (attempts++ < 3) { tag = beiscsi_invalidate_cxn(phba, beiscsi_ep); if (tag) { ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); if (!ret) break; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : invalidate conn failed cid %d\n", beiscsi_ep->ep_cid); } } /* wait for all completions to arrive, then process them */ msleep(250); /* flush CQ entries */ beiscsi_flush_cq(phba); if (attempts > 3) return -1; attempts = 0; while (attempts++ < 3) { tag = beiscsi_upload_cxn(phba, beiscsi_ep); if (tag) { ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); if (!ret) break; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : upload conn failed cid %d\n", beiscsi_ep->ep_cid); } } if (attempts > 3) return -1; 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_endpoint *beiscsi_ep; struct beiscsi_conn *beiscsi_conn; struct beiscsi_hba *phba; uint16_t cri_index; beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n", beiscsi_ep->ep_cid); cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); if (!phba->ep_array[cri_index]) { __beiscsi_log(phba, KERN_ERR, "BS_%d : ep_array at %u cid %u empty\n", cri_index, beiscsi_ep->ep_cid); return; } if (beiscsi_ep->conn) { beiscsi_conn = beiscsi_ep->conn; iscsi_suspend_queue(beiscsi_conn->conn); } if (!beiscsi_hba_is_online(phba)) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : HBA in error 0x%lx\n", phba->state); } else { /** * Make CID available even if close fails. * If not freed, FW might fail open using the CID. */ if (beiscsi_conn_close(beiscsi_ep) < 0) __beiscsi_log(phba, KERN_ERR, "BS_%d : close conn failed cid %d\n", beiscsi_ep->ep_cid); } beiscsi_free_ep(beiscsi_ep); if (!phba->conn_table[cri_index]) __beiscsi_log(phba, KERN_ERR, "BS_%d : conn_table empty at %u: cid %u\n", cri_index, beiscsi_ep->ep_cid); phba->conn_table[cri_index] = NULL; iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); } umode_t beiscsi_attr_is_visible(int param_type, int param) { switch (param_type) { case ISCSI_NET_PARAM: switch (param) { case ISCSI_NET_PARAM_IFACE_ENABLE: case ISCSI_NET_PARAM_IPV4_ADDR: case ISCSI_NET_PARAM_IPV4_SUBNET: case ISCSI_NET_PARAM_IPV4_BOOTPROTO: case ISCSI_NET_PARAM_IPV4_GW: case ISCSI_NET_PARAM_IPV6_ADDR: case ISCSI_NET_PARAM_VLAN_ID: case ISCSI_NET_PARAM_VLAN_PRIORITY: case ISCSI_NET_PARAM_VLAN_ENABLED: return S_IRUGO; default: return 0; } case ISCSI_HOST_PARAM: switch (param) { case ISCSI_HOST_PARAM_HWADDRESS: case ISCSI_HOST_PARAM_INITIATOR_NAME: case ISCSI_HOST_PARAM_PORT_STATE: case ISCSI_HOST_PARAM_PORT_SPEED: return S_IRUGO; 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_IFACE_NAME: case ISCSI_PARAM_INITIATOR_NAME: return S_IRUGO; default: return 0; } } return 0; }