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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/sctp
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/sctp')
-rw-r--r--src/vnet/sctp/sctp.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/src/vnet/sctp/sctp.c b/src/vnet/sctp/sctp.c
index 6e2dccc552e..ffa86343b47 100644
--- a/src/vnet/sctp/sctp.c
+++ b/src/vnet/sctp/sctp.c
@@ -43,8 +43,12 @@ sctp_connection_bind (u32 session_index, transport_endpoint_t * tep)
ip_copy (&listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.lcl_ip,
&tep->ip, tep->is_ip4);
- listener->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU =
- vnet_sw_interface_get_mtu (vnet_get_main (), tep->sw_if_index, VLIB_TX);
+ u32 mtu = tep->is_ip4 ? vnet_sw_interface_get_mtu (vnet_get_main (),
+ tep->sw_if_index,
+ VNET_MTU_IP4) :
+ vnet_sw_interface_get_mtu (vnet_get_main (), tep->sw_if_index,
+ VNET_MTU_IP6);
+ listener->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU = mtu;
listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.is_ip4 = tep->is_ip4;
listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto =
TRANSPORT_PROTO_SCTP;
@@ -480,8 +484,12 @@ sctp_connection_open (transport_endpoint_t * rmt)
clib_spinlock_lock_if_init (&tm->half_open_lock);
sctp_conn = sctp_half_open_connection_new (thread_id);
- sctp_conn->sub_conn[idx].PMTU =
- vnet_sw_interface_get_mtu (vnet_get_main (), rmt->sw_if_index, VLIB_TX);
+ u32 mtu = rmt->is_ip4 ? vnet_sw_interface_get_mtu (vnet_get_main (),
+ rmt->sw_if_index,
+ VNET_MTU_IP4) :
+ vnet_sw_interface_get_mtu (vnet_get_main (), rmt->sw_if_index,
+ VNET_MTU_IP6);
+ sctp_conn->sub_conn[idx].PMTU = mtu;
transport_connection_t *trans_conn = &sctp_conn->sub_conn[idx].connection;
ip_copy (&trans_conn->rmt_ip, &rmt->ip, rmt->is_ip4);