be2iscsi : Logout of FW Boot Session

 Once be2iscsi driver is loaded and operational close Boot
 session established by FW.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

diff --git a/drivers/scsi/be2iscsi/be_cmds.h b/drivers/scsi/be2iscsi/be_cmds.h
index f11d325..cdfbc5c 100644 (file)
--- a/drivers/scsi/be2iscsi/be_cmds.h
+++ b/drivers/scsi/be2iscsi/be_cmds.h
@@ -304,6 +304,17 @@ struct mgmt_auth_method_format {
        struct  mgmt_chap_format chap;
 } __packed;
 
+struct be_cmd_req_logout_fw_sess {
+       struct be_cmd_req_hdr hdr;      /* dw[4] */
+       uint32_t session_handle;
+} __packed;
+
+struct be_cmd_resp_logout_fw_sess {
+       struct be_cmd_resp_hdr hdr;     /* dw[4] */
+#define BEISCSI_MGMT_SESSION_CLOSE 0x20
+       uint32_t session_status;
+} __packed;
+
 struct mgmt_conn_login_options {
        u8 flags;
        u8 header_digest;
@@ -1136,6 +1147,7 @@ struct be_cmd_get_all_if_id_req {
 #define OPCODE_ISCSI_INI_CFG_GET_HBA_NAME      6
 #define OPCODE_ISCSI_INI_CFG_SET_HBA_NAME      7
 #define OPCODE_ISCSI_INI_SESSION_GET_A_SESSION  14
+#define OPCODE_ISCSI_INI_SESSION_LOGOUT_TARGET  24
 #define OPCODE_ISCSI_INI_DRIVER_REOPEN_ALL_SESSIONS 36
 #define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
 #define OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION 42

diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index 6510837..7a6dbfb 100644 (file)
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -4400,6 +4400,9 @@ static int beiscsi_get_boot_info(struct beiscsi_hba *phba)
 
        memcpy(&phba->boot_sess, &session_resp->session_info,
               sizeof(struct mgmt_session_info));
+
+        beiscsi_logout_fw_sess(phba,
+                               phba->boot_sess.session_handle);
        ret = 0;
 
 boot_freemem:

diff --git a/drivers/scsi/be2iscsi/be_mgmt.c b/drivers/scsi/be2iscsi/be_mgmt.c
index c2c4d69..ca4016f 100644 (file)
--- a/drivers/scsi/be2iscsi/be_mgmt.c
+++ b/drivers/scsi/be2iscsi/be_mgmt.c
@@ -1707,3 +1707,72 @@ void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
                     (params->dw[offsetof(struct amap_beiscsi_offload_params,
                      exp_statsn) / 32] + 1));
 }
+
+/**
+ * beiscsi_logout_fw_sess()- Firmware Session Logout
+ * @phba: Device priv structure instance
+ * @fw_sess_handle: FW session handle
+ *
+ * Logout from the FW established sessions.
+ * returns
+ *  Success: 0
+ *  Failure: Non-Zero Value
+ *
+ */
+int beiscsi_logout_fw_sess(struct beiscsi_hba *phba,
+               uint32_t fw_sess_handle)
+{
+       struct be_ctrl_info *ctrl = &phba->ctrl;
+       struct be_mcc_wrb *wrb;
+       struct be_cmd_req_logout_fw_sess *req;
+       struct be_cmd_resp_logout_fw_sess *resp;
+       unsigned int tag;
+       int rc;
+
+       beiscsi_log(phba, KERN_INFO,
+                   BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+                   "BG_%d : In bescsi_logout_fwboot_sess\n");
+
+       spin_lock(&ctrl->mbox_lock);
+       tag = alloc_mcc_tag(phba);
+       if (!tag) {
+               spin_unlock(&ctrl->mbox_lock);
+               beiscsi_log(phba, KERN_INFO,
+                           BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
+                           "BG_%d : MBX Tag Failure\n");
+               return -EINVAL;
+       }
+
+       wrb = wrb_from_mccq(phba);
+       req = embedded_payload(wrb);
+       wrb->tag0 |= tag;
+       be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
+       be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
+                          OPCODE_ISCSI_INI_SESSION_LOGOUT_TARGET,
+                          sizeof(struct be_cmd_req_logout_fw_sess));
+
+       /* Set the session handle */
+       req->session_handle = fw_sess_handle;
+       be_mcc_notify(phba);
+       spin_unlock(&ctrl->mbox_lock);
+
+       rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
+       if (rc) {
+               beiscsi_log(phba, KERN_ERR,
+                           BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
+                           "BG_%d : MBX CMD FW_SESSION_LOGOUT_TARGET Failed\n");
+               return -EBUSY;
+       }
+
+       resp = embedded_payload(wrb);
+       if (resp->session_status !=
+               BEISCSI_MGMT_SESSION_CLOSE) {
+               beiscsi_log(phba, KERN_ERR,
+                           BEISCSI_LOG_INIT | BEISCSI_LOG_CONFIG,
+                           "BG_%d : FW_SESSION_LOGOUT_TARGET resp : 0x%x\n",
+                           resp->session_status);
+               rc = -EINVAL;
+       }
+
+       return rc;
+}

diff --git a/drivers/scsi/be2iscsi/be_mgmt.h b/drivers/scsi/be2iscsi/be_mgmt.h
index 9356b9a..b58a7de 100644 (file)
--- a/drivers/scsi/be2iscsi/be_mgmt.h
+++ b/drivers/scsi/be2iscsi/be_mgmt.h
@@ -338,4 +338,7 @@ void beiscsi_ue_detect(struct beiscsi_hba *phba);
 int be_cmd_modify_eq_delay(struct beiscsi_hba *phba,
                         struct be_set_eqd *, int num);
 
+int beiscsi_logout_fw_sess(struct beiscsi_hba *phba,
+                           uint32_t fw_sess_handle);
+
 #endif