From: Nelson Escobar <neescoba@cisco.com>
Date: Wed, 29 Jun 2016 23:03:20 +0000 (-0700)
Subject: net/enic: fix Tx crash after restart
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=a3d5f0c92a72addbd6719d783c320ce7e2789241;p=dpdk.git

net/enic: fix Tx crash after restart

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: a3b1e9551c26 ("net/enic: streamline mbuf handling in Tx path")

Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---

diff --git a/drivers/net/enic/base/vnic_wq.c b/drivers/net/enic/base/vnic_wq.c
index 9b9ff4d7d0..7c4119c34a 100644
--- a/drivers/net/enic/base/vnic_wq.c
+++ b/drivers/net/enic/base/vnic_wq.c
@@ -197,6 +197,8 @@ 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);