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authorNeale Ranns <neale@graphiant.com>2020-12-21 08:29:34 +0000
committerOle Tr�an <otroan@employees.org>2021-02-15 17:27:48 +0000
commit8f5fef2c78b95de1a636ce27111722b71702212a (patch)
treea0ebd0189969ccae1f0bdd7c1a9c18dd7a066f2e /src/vnet/gre
parent54be0cc044f445853fae7b8995c477605250af16 (diff)
ip: Path MTU
Type: feature Support setting the MTU for a peer on an interface. The minimum value of the path and interface MTU is used at forwarding time. the path MTU is specified for a given peer, by address and table-ID. In the forwarding plane the MTU is enfored either: 1 - if the peer is attached, then the MTU is set on the peer's adjacency 2 - if the peer is not attached, it is remote, then a DPO is added to the peer's FIB entry to perform the necessary fragmentation. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I8b9ea6a07868b50e97e2561f18d9335407dea7ae
Diffstat (limited to 'src/vnet/gre')
-rw-r--r--src/vnet/gre/gre.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/src/vnet/gre/gre.c b/src/vnet/gre/gre.c
index 0669c676bf5..fcdf9c0d6bc 100644
--- a/src/vnet/gre/gre.c
+++ b/src/vnet/gre/gre.c
@@ -495,8 +495,13 @@ mgre_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
adj->ia_nh_proto, &adj->sub_type.nbr.next_hop);
if (NULL == ne)
- // no NHRP entry to provide the next-hop
- return;
+ {
+ // no TEIB entry to provide the next-hop
+ adj_nbr_midchain_update_rewrite (
+ ai, gre_get_fixup (t->tunnel_dst.fp_proto, adj_get_link_type (ai)),
+ uword_to_pointer (t->flags, void *), ADJ_FLAG_NONE, NULL);
+ return;
+ }
mgre_walk_ctx_t ctx = {
.t = t,