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authorOle Troan <ot@cisco.com>2018-06-07 10:17:57 +0200
committerDamjan Marion <dmarion@me.com>2018-06-11 10:25:59 +0000
commitd723161e038d00e59766aa67a6a0dcc350227e4b (patch)
tree24f5a1d87ebdc0012f28d42aa80a9f5d760073bf /src/vnet/ipsec-gre
parentf4fd0d4217ab6c41fe6b093871bd40ac130e6486 (diff)
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>
Diffstat (limited to 'src/vnet/ipsec-gre')
-rw-r--r--src/vnet/ipsec-gre/interface.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/src/vnet/ipsec-gre/interface.c b/src/vnet/ipsec-gre/interface.c
index 0772ce73df2..8903df01c04 100644
--- a/src/vnet/ipsec-gre/interface.c
+++ b/src/vnet/ipsec-gre/interface.c
@@ -174,12 +174,10 @@ vnet_ipsec_gre_add_del_tunnel (vnet_ipsec_gre_add_del_tunnel_args_t * a,
hi->min_packet_bytes = 64 + sizeof (gre_header_t) +
sizeof (ip4_header_t) + sizeof (esp_header_t) + sizeof (esp_footer_t);
- hi->per_packet_overhead_bytes =
- /* preamble */ 8 + /* inter frame gap */ 12;
/* Standard default gre MTU. */
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
- 9000;
+ /* TODO: Should take tunnel overhead into consideration */
+ vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
clib_memcpy (&t->tunnel_src, &a->src, sizeof (t->tunnel_src));
clib_memcpy (&t->tunnel_dst, &a->dst, sizeof (t->tunnel_dst));