From 60971e62dcbb50a7ef1c3839e8b33b5aef6a48fe Mon Sep 17 00:00:00 2001
From: John Daley <johndale@cisco.com>
Date: Fri, 1 Jul 2016 12:24:45 -0700
Subject: [PATCH 18/25] enic: fix segfault on Tx path after restarting a device

If you stop then start a port that had already sent some packets,
there was a segfault due to not resetting the number of completed
sends to zero.

Fixes: d5d882fe1a11 ("Tx path rewrite to reduce Host CPU overhead")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---
 drivers/net/enic/base/vnic_wq.c | 2 ++
 drivers/net/enic/base/vnic_wq.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/enic/base/vnic_wq.c b/drivers/net/enic/base/vnic_wq.c
index ccbbd61..7026bfe 100644
--- a/drivers/net/enic/base/vnic_wq.c
+++ b/drivers/net/enic/base/vnic_wq.c
@@ -206,6 +206,8 @@ void vnic_wq_clean(struct vnic_wq *wq,
 
 	wq->head_idx = 0;
 	wq->tail_idx = 0;
+	wq->last_completed_index = 0;
+	*((uint32_t *)wq->cqmsg_rz->addr) = 0;
 
 	iowrite32(0, &wq->ctrl->fetch_index);
 	iowrite32(0, &wq->ctrl->posted_index);
diff --git a/drivers/net/enic/base/vnic_wq.h b/drivers/net/enic/base/vnic_wq.h
index 37c3ff9..faf3bfa 100644
--- a/drivers/net/enic/base/vnic_wq.h
+++ b/drivers/net/enic/base/vnic_wq.h
@@ -38,6 +38,7 @@
 
 #include "vnic_dev.h"
 #include "vnic_cq.h"
+#include <rte_memzone.h>
 
 /* Work queue control */
 struct vnic_wq_ctrl {
-- 
2.7.0