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authorOle Troan <ot@cisco.com>2018-03-27 14:48:39 +0200
committerNeale Ranns <nranns@cisco.com>2018-04-13 13:27:44 +0000
commit70083ee74c3141bbefb185525315f1b34497dcaa (patch)
tree2b93f23b853239152864ad5ee0db073d37c341ea /src/vnet/ipip
parent25b049484fcf9161edb2c19250066b893c38c264 (diff)
MTU: Setting of MTU on software interface (instead of hardware interface)
Change-Id: I98bd454a761a1032738a21edeb0fe847e801f901 Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vnet/ipip')
-rw-r--r--src/vnet/ipip/ipip.c7
-rw-r--r--src/vnet/ipip/sixrd.c3
2 files changed, 5 insertions, 5 deletions
diff --git a/src/vnet/ipip/ipip.c b/src/vnet/ipip/ipip.c
index 82c961cdddd..9b808d4ac0f 100644
--- a/src/vnet/ipip/ipip.c
+++ b/src/vnet/ipip/ipip.c
@@ -476,17 +476,16 @@ ipip_add_tunnel (ipip_transport_t transport,
{
vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
hi->min_packet_bytes = 64 + sizeof (ip4_header_t);
+ hi->max_packet_bytes = 65536 - sizeof (ip4_header_t);
}
else
{
vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
hi->min_packet_bytes = 64 + sizeof (ip6_header_t);
+ hi->max_packet_bytes = 65536 - 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, hi->max_packet_bytes);
t->tunnel_src = *src;
t->tunnel_dst = *dst;
diff --git a/src/vnet/ipip/sixrd.c b/src/vnet/ipip/sixrd.c
index cfdd0f87e3a..998025782fb 100644
--- a/src/vnet/ipip/sixrd.c
+++ b/src/vnet/ipip/sixrd.c
@@ -337,7 +337,8 @@ 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;
+ /* Set default MTU to 1480 */
+ vnet_sw_interface_set_mtu (vnet_get_main (), t->sw_if_index, 1480);
ipip_tunnel_db_add (t, &key);