[SCSI] be2iscsi: Get Port State and Speed of the Adapter

Implement ISCSI_HOST_PARAM_PORT_STATE and ISCSI_HOST_PARAM_PORT_SPEED
to get the Adapter port state and port name

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, 89 insertions, 0 deletions

diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index 46cc40e83b36..43f35034585d 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -618,6 +618,79 @@ static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 }
 
 /**
+ * beiscsi_get_port_state - Get the Port State
+ * @shost : pointer to scsi_host structure
+ *
+ * returns number of bytes
+ */
+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 = (phba->state == BE_ADAPTER_UP) ?
+                ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
+}
+
+/**
+ * beiscsi_get_port_speed  - Get the Port Speed from Adapter
+ * @shost : pointer to scsi_host structure
+ *
+ * returns Success/Failure
+ */
+static int beiscsi_get_port_speed(struct Scsi_Host *shost)
+{
+        unsigned int tag, wrb_num;
+        unsigned short status, extd_status;
+        struct be_mcc_wrb *wrb;
+        struct be_cmd_ntwk_link_status_resp *resp;
+        struct beiscsi_hba *phba = iscsi_host_priv(shost);
+        struct iscsi_cls_host *ihost = shost->shost_data;
+        struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
+
+        tag = be_cmd_get_port_speed(phba);
+        if (!tag) {
+                SE_DEBUG(DBG_LVL_1, "Getting Port Speed 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);
+
+        switch (resp->mac_speed) {
+        case BE2ISCSI_LINK_SPEED_10MBPS:
+                ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
+                break;
+        case BE2ISCSI_LINK_SPEED_100MBPS:
+                ihost->port_speed = BE2ISCSI_LINK_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;
+        default:
+                ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
+        }
+        return 0;
+}
+
+/**
  * beiscsi_get_host_param - get the iscsi parameter
  * @shost: pointer to scsi_host structure
  * @param: parameter type identifier
@@ -648,6 +721,19 @@ int beiscsi_get_host_param(struct Scsi_Host *shost,
                         return status;
                 }
                 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:
+                status = beiscsi_get_port_speed(shost);
+                if (status) {
+                        SE_DEBUG(DBG_LVL_1,
+                                        "Retreiving Port Speed Failed\n");
+                        return status;
+                }
+                status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
+                break;
         default:
                 return iscsi_host_get_param(shost, param, buf);
         }
@@ -1073,6 +1159,9 @@ umode_t be2iscsi_attr_is_visible(int param_type, int param)
         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;