v4.19.13 snapshot.
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
new file mode 100644
index 0000000..c8f0a21
--- /dev/null
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -0,0 +1,1409 @@
+/*
+ * 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.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as published
+ * by the Free Software Foundation.
+ *
+ * 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
+ * @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)
+ *
+ * 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_set_vlan_tag()- 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;
+ 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 : Retreiving 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
+ * @ep: pointer to iscsi endpoint structure
+ */
+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: 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 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 = pci_alloc_consistent(phba->ctrl.pdev,
+ req_memsize,
+ &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_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);
+
+ pci_free_consistent(phba->ctrl.pdev, 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)
+ pci_free_consistent(phba->ctrl.pdev, 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");
+
+ pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
+ nonemb_cmd.va, nonemb_cmd.dma);
+ return 0;
+}
+
+/**
+ * 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) {
+ 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
+ * @ep: The iscsi endpoint
+ *
+ * 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;
+}