From: John Lo <loj@cisco.com>
Date: Thu, 3 Mar 2016 17:13:11 +0000 (-0500)
Subject: Change default L3 MTU to allow jumbo packets for non-DPDK interfaces.
X-Git-Tag: v16.06-rc1~266
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=73f7ef8ab714464c477de5bd3938b976c01d37cf;p=vpp.git

Change default L3 MTU to allow jumbo packets for non-DPDK interfaces.
Note that L3 MTU for DPDK interfaces is derived from DPDK port_conf
in vnet/devices/dpdk/init.c.

Change-Id: I9633a1887347a18d05598435baceb6a62cd7b19a
Signed-off-by: John Lo <loj@cisco.com>
---

diff --git a/vnet/vnet/ethernet/interface.c b/vnet/vnet/ethernet/interface.c
index fe7eb76bf46..1f7276ee7d8 100644
--- a/vnet/vnet/ethernet/interface.c
+++ b/vnet/vnet/ethernet/interface.c
@@ -186,7 +186,7 @@ ethernet_register_interface (vnet_main_t * vnm,
     /* preamble */ 8 + /* inter frame gap */ 12;
 
   /* Standard default ethernet MTU. */
-  hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 1500;
+  hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
 
   memcpy (ei->address, address, sizeof (ei->address));
   vec_free (hi->hw_address);
diff --git a/vnet/vnet/gre/interface.c b/vnet/vnet/gre/interface.c
index 72ce0962fc7..0eb395bbbe6 100644
--- a/vnet/vnet/gre/interface.c
+++ b/vnet/vnet/gre/interface.c
@@ -68,7 +68,7 @@ gre_register_interface (vnet_main_t * vnm,
     /* preamble */ 8 + /* inter frame gap */ 12;
 
   /* Standard default gre MTU. */
-  hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 1500;
+  hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
 
   memcpy (&t->tunnel_src, tunnel_src, sizeof (t->tunnel_src));
   memcpy (&t->tunnel_dst, tunnel_dst, sizeof (t->tunnel_dst));