commit d723161e038d00e59766aa67a6a0dcc350227e4b
author Ole Troan <ot@cisco.com> Thu Jun 07 10:17:57 2018 +0200
committer Damjan Marion <dmarion@me.com> Mon Jun 11 10:25:59 2018 +0000
tree 24f5a1d87ebdc0012f28d42aa80a9f5d760073bf
parent f4fd0d4217ab6c41fe6b093871bd40ac130e6486

MTU: Software interface / Per-protocol MTU support

This patch separates setting of hardware interfaec and software
interface MTU. Software MTU is L2 payload MTU (i.e. not including L2
header). Per-protocol MTU for IPv4, IPv6 and MPLS can also be set.
Currently only IP4, IP6 are enabled in adjacency / rewrite code.

Documentation in src/vnet/MTU.md

Change-Id: Iee2fd6f0bbc8210748dd8e073ab9fab87d323690
Signed-off-by: Ole Troan <ot@cisco.com>

src/vnet/devices/virtio/vhost-user.c

diff --git a/src/vnet/devices/virtio/vhost-user.c b/src/vnet/devices/virtio/vhost-user.c
index 4e745d6..9244776 100644
--- a/src/vnet/devices/virtio/vhost-user.c
+++ b/src/vnet/devices/virtio/vhost-user.c
@@ -2867,8 +2867,7 @@
   if (error)
     clib_error_report (error);
 
-  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, vui->hw_if_index);
-  hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
+  vnet_sw_interface_set_mtu (vnm, vui->sw_if_index, 9000);
 }
 
 /*