/** * Copyright (C) 2005 - 2011 Emulex * All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. The full GNU General * Public License is included in this distribution in the file called COPYING. * * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com) * * Contact Information: * linux-drivers@emulex.com * * Emulex * 3333 Susan Street * Costa Mesa, CA 92626 */ #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 * @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) { printk(KERN_ERR "beiscsi_session_create: invalid ep\n"); return NULL; } beiscsi_ep = ep->dd_data; phba = beiscsi_ep->phba; shost = phba->shost; 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; } 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_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"); pci_pool_destroy(beiscsi_sess->bhs_pool); iscsi_session_teardown(cls_session); } /** * 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_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]) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Connection table already occupied. Detected clash\n"); return -EINVAL; } else { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n", cid, beiscsi_conn); phba->conn_table[cid] = beiscsi_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 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; } beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; beiscsi_conn->ep = beiscsi_ep; beiscsi_ep->conn = beiscsi_conn; 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); } static int beiscsi_create_ipv4_iface(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_create_ipv6_iface(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_create_def_ifaces(struct beiscsi_hba *phba) { struct be_cmd_get_if_info_resp if_info; if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info)) beiscsi_create_ipv4_iface(phba); if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info)) beiscsi_create_ipv6_iface(phba); } void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba) { if (phba->ipv6_iface) iscsi_destroy_iface(phba->ipv6_iface); if (phba->ipv4_iface) iscsi_destroy_iface(phba->ipv4_iface); } static int beiscsi_set_static_ip(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); struct iscsi_iface_param_info *iface_ip = NULL; struct iscsi_iface_param_info *iface_subnet = NULL; struct nlattr *nla; int ret; switch (iface_param->param) { case ISCSI_NET_PARAM_IPV4_BOOTPROTO: nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); if (nla) iface_ip = nla_data(nla); nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); if (nla) iface_subnet = nla_data(nla); break; case ISCSI_NET_PARAM_IPV4_ADDR: iface_ip = iface_param; nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); if (nla) iface_subnet = nla_data(nla); break; case ISCSI_NET_PARAM_IPV4_SUBNET: iface_subnet = iface_param; nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); if (nla) iface_ip = nla_data(nla); break; default: beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Unsupported param %d\n", iface_param->param); } if (!iface_ip || !iface_subnet) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : IP and Subnet Mask required\n"); return -EINVAL; } ret = mgmt_set_ip(phba, iface_ip, iface_subnet, ISCSI_BOOTPROTO_STATIC); return ret; } static int beiscsi_set_ipv4(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 = 0; /* Check the param */ switch (iface_param->param) { case ISCSI_NET_PARAM_IPV4_GW: ret = mgmt_set_gateway(phba, iface_param); break; case ISCSI_NET_PARAM_IPV4_BOOTPROTO: if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP) ret = mgmt_set_ip(phba, iface_param, NULL, ISCSI_BOOTPROTO_DHCP); else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC) ret = beiscsi_set_static_ip(shost, iface_param, data, dt_len); else beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Invalid BOOTPROTO: %d\n", iface_param->value[0]); break; case ISCSI_NET_PARAM_IFACE_ENABLE: if (iface_param->value[0] == ISCSI_IFACE_ENABLE) ret = beiscsi_create_ipv4_iface(phba); else iscsi_destroy_iface(phba->ipv4_iface); break; case ISCSI_NET_PARAM_IPV4_SUBNET: case ISCSI_NET_PARAM_IPV4_ADDR: ret = beiscsi_set_static_ip(shost, iface_param, data, dt_len); break; default: beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Param %d not supported\n", iface_param->param); } return ret; } static int beiscsi_set_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 = 0; switch (iface_param->param) { case ISCSI_NET_PARAM_IFACE_ENABLE: if (iface_param->value[0] == ISCSI_IFACE_ENABLE) ret = beiscsi_create_ipv6_iface(phba); else { iscsi_destroy_iface(phba->ipv6_iface); ret = 0; } break; case ISCSI_NET_PARAM_IPV6_ADDR: ret = mgmt_set_ip(phba, iface_param, NULL, ISCSI_BOOTPROTO_STATIC); break; default: beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Param %d not supported\n", iface_param->param); } return ret; } int be2iscsi_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 = 0 ; 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; } switch (iface_param->iface_type) { case ISCSI_IFACE_TYPE_IPV4: ret = beiscsi_set_ipv4(shost, iface_param, data, dt_len); break; case ISCSI_IFACE_TYPE_IPV6: ret = beiscsi_set_ipv6(shost, iface_param, data, dt_len); break; default: beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Invalid iface type :%d passed\n", iface_param->iface_type); break; } if (ret) return ret; } return ret; } static int be2iscsi_get_if_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 = BE2_IPV4; memset(&if_info, 0, sizeof(if_info)); if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) ip_type = BE2_IPV6; len = mgmt_get_if_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"); else len = sprintf(buf, "dhcp"); break; case ISCSI_NET_PARAM_IPV4_SUBNET: len = sprintf(buf, "%pI4\n", &if_info.ip_addr.subnet_mask); break; default: WARN_ON(1); } return len; } int be2iscsi_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 = -ENOSYS; 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: len = be2iscsi_get_if_param(phba, iface, param, buf); break; case ISCSI_NET_PARAM_IFACE_ENABLE: len = sprintf(buf, "enabled"); break; case ISCSI_NET_PARAM_IPV4_GW: memset(&gateway, 0, sizeof(gateway)); len = mgmt_get_gateway(phba, BE2_IPV4, &gateway); if (!len) len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr); break; default: len = -ENOSYS; } 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 = 0; 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 == 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; } 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 == 0)) conn->max_xmit_dlength = 65536; default: return 0; } return 0; } /** * beiscsi_get_initname - Read Initiator Name from flash * @buf: buffer bointer * @phba: The device priv structure instance * * returns number of bytes */ static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba) { int rc; unsigned int tag, wrb_num; unsigned short status, extd_status; struct be_mcc_wrb *wrb; struct be_cmd_hba_name *resp; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; tag = be_cmd_get_initname(phba); if (!tag) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Getting Initiator Name 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, "BS_%d : MailBox Command Failed with " "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); rc = sprintf(buf, "%s\n", resp->initiator_name); return rc; } /** * beiscsi_get_port_state - Get the Port State * @shost : pointer to scsi_host structure * * returns number of bytes */ 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 = (phba->state == BE_ADAPTER_UP) ? ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN; } /** * beiscsi_get_port_speed - Get the Port Speed from Adapter * @shost : pointer to scsi_host structure * * returns Success/Failure */ static int beiscsi_get_port_speed(struct Scsi_Host *shost) { unsigned int tag, wrb_num; unsigned short status, extd_status; struct be_mcc_wrb *wrb; struct be_cmd_ntwk_link_status_resp *resp; struct beiscsi_hba *phba = iscsi_host_priv(shost); struct iscsi_cls_host *ihost = shost->shost_data; struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; tag = be_cmd_get_port_speed(phba); if (!tag) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Getting Port Speed 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, "BS_%d : MailBox Command Failed with " "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); switch (resp->mac_speed) { case BE2ISCSI_LINK_SPEED_10MBPS: ihost->port_speed = ISCSI_PORT_SPEED_10MBPS; break; case BE2ISCSI_LINK_SPEED_100MBPS: ihost->port_speed = BE2ISCSI_LINK_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; default: ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN; } return 0; } /** * 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; 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 status; } break; case ISCSI_HOST_PARAM_INITIATOR_NAME: status = beiscsi_get_initname(buf, phba); if (status < 0) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Retreiving Initiator Name Failed\n"); return status; } 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: status = beiscsi_get_port_speed(shost); if (status) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : Retreiving Port Speed Failed\n"); return status; } 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 (strlen(phba->mac_address)) 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; 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 = 0; 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, exp_statsn, params, (conn->exp_statsn - 1)); } /** * 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; 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) { unsigned short cid = 0xFFFF; if (!phba->avlbl_cids) return cid; cid = phba->cid_array[phba->cid_alloc++]; if (phba->cid_alloc == phba->params.cxns_per_ctrl) phba->cid_alloc = 0; phba->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) { phba->avlbl_cids++; phba->cid_array[phba->cid_free++] = cid; if (phba->cid_free == phba->params.cxns_per_ctrl) phba->cid_free = 0; } /** * beiscsi_free_ep - free endpoint * @ep: pointer to iscsi endpoint structure */ static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep) { struct beiscsi_hba *phba = beiscsi_ep->phba; beiscsi_put_cid(phba, beiscsi_ep->ep_cid); beiscsi_ep->phba = NULL; } /** * 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; 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 == 0xFFFF) { 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[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)) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, "BS_%d : 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; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : 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; } /** * 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; if (shost) phba = iscsi_host_priv(shost); else { ret = -ENXIO; printk(KERN_ERR "beiscsi_ep_connect shost is NULL\n"); return ERR_PTR(ret); } if (phba->state != BE_ADAPTER_UP) { ret = -EBUSY; beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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) { 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_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) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : 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; } /** * 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 { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : Connection table Not occupied.\n"); return -EINVAL; } 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; beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n", beiscsi_ep->ep_cid); if (!beiscsi_ep->conn) { beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : In beiscsi_ep_disconnect, no " "beiscsi_ep\n"); return; } beiscsi_conn = beiscsi_ep->conn; iscsi_suspend_queue(beiscsi_conn->conn); beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, "BS_%d : 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) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, "BS_%d : 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); } umode_t be2iscsi_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: 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; }