From: Damjan Marion <damarion@cisco.com>
Date: Thu, 8 Feb 2018 18:49:22 +0000 (+0100)
Subject: virtio: reset vnet header on tx
X-Git-Tag: v18.01.2~35
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F97%2F10797%2F1;p=vpp.git

virtio: reset vnet header on tx

Change-Id: Ib04a8787038fb536470a04d99fdc165102edfb5a
Signed-off-by: Damjan Marion <damarion@cisco.com>
---

diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c
index 5528ddb0429..ae8a116efee 100644
--- a/src/vnet/devices/virtio/device.c
+++ b/src/vnet/devices/virtio/device.c
@@ -130,6 +130,9 @@ add_buffer_to_slot (vlib_main_t * vm, virtio_vring_t * vring, u32 bi,
   struct vring_desc *d;
   d = &vring->desc[next];
   vlib_buffer_t *b = vlib_get_buffer (vm, bi);
+  struct virtio_net_hdr_v1 *hdr = vlib_buffer_get_current (b) - hdr_sz;
+
+  memset (hdr, 0, hdr_sz);
 
   if (PREDICT_TRUE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) == 0))
     {