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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/ipip
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/ipip')
-rw-r--r--src/vnet/ipip/ipip.c4
-rw-r--r--src/vnet/ipip/sixrd.c2
2 files changed, 2 insertions, 4 deletions
diff --git a/src/vnet/ipip/ipip.c b/src/vnet/ipip/ipip.c
index c39d27d5e4f..a47704a62e6 100644
--- a/src/vnet/ipip/ipip.c
+++ b/src/vnet/ipip/ipip.c
@@ -526,10 +526,8 @@ ipip_add_tunnel (ipip_transport_t transport,
hi->min_packet_bytes = 64 + sizeof (ip6_header_t);
}
- hi->per_packet_overhead_bytes = /* preamble */ 8 + /* inter frame gap */ 12;
-
/* Standard default ipip MTU. */
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 9000;
+ vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
t->tunnel_src = *src;
t->tunnel_dst = *dst;
diff --git a/src/vnet/ipip/sixrd.c b/src/vnet/ipip/sixrd.c
index cfdd0f87e3a..38ca899f274 100644
--- a/src/vnet/ipip/sixrd.c
+++ b/src/vnet/ipip/sixrd.c
@@ -337,7 +337,7 @@ sixrd_add_tunnel (ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
t->dev_instance = t_idx;
t->user_instance = t_idx;
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] = 1480;
+ vnet_sw_interface_set_mtu (vnet_get_main (), t->sw_if_index, 1480);
ipip_tunnel_db_add (t, &key);