[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 <[e-mail]>
Signed-off-by: Jayamohan Kallickal <[e-mail]>
Signed-off-by: Mike Christie <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/scsi/be2iscsi/be_cmds.c

···
  * Costa Mesa, CA 92626
  */
 
+#include <scsi/iscsi_proto.h>
+
 #include "be.h"
 #include "be_mgmt.h"
 #include "be_main.h"

drivers/scsi/be2iscsi/be_cmds.h

···
 	u32 rsvd[23];
 };
 
+#define BEISCSI_ALIAS_LEN 32
+
+struct be_cmd_hba_name {
+	struct be_cmd_req_hdr hdr;
+	u16 flags;
+	u16 rsvd0;
+	u8 initiator_name[ISCSI_NAME_LEN];
+	u8 initiator_alias[BEISCSI_ALIAS_LEN];
+} __packed;
+
+
 int beiscsi_cmd_eq_create(struct be_ctrl_info *ctrl,
 			  struct be_queue_info *eq, int eq_delay);
 
···
 int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
 				      struct beiscsi_hba *phba);
 unsigned int be_cmd_get_mac_addr(struct beiscsi_hba *phba);
+unsigned int be_cmd_get_initname(struct beiscsi_hba *phba);
 unsigned int beiscsi_get_boot_target(struct beiscsi_hba *phba);
 unsigned int beiscsi_get_session_info(struct beiscsi_hba *phba,
 				  u32 boot_session_handle,

drivers/scsi/be2iscsi/be_iscsi.c

···
 }
 
 /**
+ * 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
···
 		status = beiscsi_get_macaddr(buf, phba);
 		if (status < 0) {
 			SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
+			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;

drivers/scsi/be2iscsi/be_mgmt.c

···
 	return tag;
 }
 
+unsigned int be_cmd_get_initname(struct beiscsi_hba *phba)
+{
+	unsigned int tag = 0;
+	struct be_mcc_wrb *wrb;
+	struct be_cmd_hba_name *req;
+	struct be_ctrl_info *ctrl = &phba->ctrl;
+
+	spin_lock(&ctrl->mbox_lock);
+	tag = alloc_mcc_tag(phba);
+	if (!tag) {
+		spin_unlock(&ctrl->mbox_lock);
+		return tag;
+	}
+
+	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_CFG_GET_HBA_NAME,
+			sizeof(*req));
+
+	be_mcc_notify(phba);
+	spin_unlock(&ctrl->mbox_lock);
+	return tag;
+}

include/scsi/iscsi_proto.h

···
 
 #define ISCSI_DEF_TIME2WAIT			2
 
+#define ISCSI_NAME_LEN				224
+
 /************************* RFC 3720 End *****************************/
 
 #endif /* ISCSI_PROTO_H */