[SCSI] be2iscsi: Get Initiator Name for the iSCSI_Host

Implement the ISCSI_HOST_PARAM_INITIATOR_NAME for .get_host_param

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

1 files changed, 50 insertions, 0 deletions

diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index 2bb681ef19ef..1af777474e42 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -279,6 +279,48 @@ int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 }
 
 /**
+ * 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) {
+                SE_DEBUG(DBG_LVL_1, "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) {
+                SE_DEBUG(DBG_LVL_1, "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_host_param - get the iscsi parameter
  * @shost: pointer to scsi_host structure
  * @param: parameter type identifier
@@ -301,6 +343,14 @@ int beiscsi_get_host_param(struct Scsi_Host *shost,
                         return status;
                 }
                 break;
+        case ISCSI_HOST_PARAM_INITIATOR_NAME:
+                status = beiscsi_get_initname(buf, phba);
+                if (status < 0) {
+                        SE_DEBUG(DBG_LVL_1,
+                                        "Retreiving Initiator Name Failed\n");
+                        return status;
+                }
+                break;
         default:
                 return iscsi_host_get_param(shost, param, buf);
         }