diff options
Diffstat (limited to 'drivers/scsi/be2iscsi/be_iscsi.c')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_iscsi.c | 1415 |
1 files changed, 1415 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c new file mode 100644 index 000000000..8d374ae86 --- /dev/null +++ b/drivers/scsi/be2iscsi/be_iscsi.c @@ -0,0 +1,1415 @@ +// 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 <scsi/libiscsi.h> +#include <scsi/scsi_transport_iscsi.h> +#include <scsi/scsi_transport.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_netlink.h> +#include <net/netlink.h> +#include <scsi/scsi.h> + +#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; + int rc = 0; + + 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)) { + rc = -EINVAL; + goto put_ep; + } + + 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); + rc = -EEXIST; + goto put_ep; + } + 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]); + rc = -EINVAL; + goto put_ep; + } + } + + 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; + +put_ep: + iscsi_put_endpoint(ep); + return rc; +} + +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) { + /* ignore nla_type as it is never used */ + if (nla_len(attrib) < sizeof(*iface_param)) + return -EINVAL; + + 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_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_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; +} |