[SCSI] qla4xxx: Added ping support
Added ping support for network connection diagnostics.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/qla4xxx/ql4_iocb.c b/drivers/scsi/qla4xxx/ql4_iocb.c
index 4106693..c70651d 100644
--- a/drivers/scsi/qla4xxx/ql4_iocb.c
+++ b/drivers/scsi/qla4xxx/ql4_iocb.c
@@ -445,3 +445,95 @@
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return ret;
}
+
+static struct mrb *qla4xxx_get_new_mrb(struct scsi_qla_host *ha)
+{
+ struct mrb *mrb;
+
+ mrb = kzalloc(sizeof(*mrb), GFP_KERNEL);
+ if (!mrb)
+ return mrb;
+
+ mrb->ha = ha;
+ return mrb;
+}
+
+int qla4xxx_send_mbox_iocb(struct scsi_qla_host *ha, struct mrb *mrb,
+ uint32_t *in_mbox)
+{
+ int rval = QLA_SUCCESS;
+ uint32_t i;
+ unsigned long flags;
+ uint32_t index = 0;
+
+ /* Acquire hardware specific lock */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+
+ /* Get pointer to the queue entry for the marker */
+ rval = qla4xxx_get_req_pkt(ha, (struct queue_entry **) &(mrb->mbox));
+ if (rval != QLA_SUCCESS)
+ goto exit_mbox_iocb;
+
+ index = ha->mrb_index;
+ /* get valid mrb index*/
+ for (i = 0; i < MAX_MRB; i++) {
+ index++;
+ if (index == MAX_MRB)
+ index = 1;
+ if (ha->active_mrb_array[index] == NULL) {
+ ha->mrb_index = index;
+ break;
+ }
+ }
+
+ mrb->iocb_cnt = 1;
+ ha->active_mrb_array[index] = mrb;
+ mrb->mbox->handle = index;
+ mrb->mbox->hdr.entryType = ET_MBOX_CMD;
+ mrb->mbox->hdr.entryCount = mrb->iocb_cnt;
+ memcpy(mrb->mbox->in_mbox, in_mbox, 32);
+ mrb->mbox_cmd = in_mbox[0];
+ wmb();
+
+ ha->isp_ops->queue_iocb(ha);
+exit_mbox_iocb:
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ return rval;
+}
+
+int qla4xxx_ping_iocb(struct scsi_qla_host *ha, uint32_t options,
+ uint32_t payload_size, uint32_t pid, uint8_t *ipaddr)
+{
+ uint32_t in_mbox[8];
+ struct mrb *mrb = NULL;
+ int rval = QLA_SUCCESS;
+
+ memset(in_mbox, 0, sizeof(in_mbox));
+
+ mrb = qla4xxx_get_new_mrb(ha);
+ if (!mrb) {
+ DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: fail to get new mrb\n",
+ __func__));
+ rval = QLA_ERROR;
+ goto exit_ping;
+ }
+
+ in_mbox[0] = MBOX_CMD_PING;
+ in_mbox[1] = options;
+ memcpy(&in_mbox[2], &ipaddr[0], 4);
+ memcpy(&in_mbox[3], &ipaddr[4], 4);
+ memcpy(&in_mbox[4], &ipaddr[8], 4);
+ memcpy(&in_mbox[5], &ipaddr[12], 4);
+ in_mbox[6] = payload_size;
+
+ mrb->pid = pid;
+ rval = qla4xxx_send_mbox_iocb(ha, mrb, in_mbox);
+
+ if (rval != QLA_SUCCESS)
+ goto exit_ping;
+
+ return rval;
+exit_ping:
+ kfree(mrb);
+ return rval;
+}