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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/fib/fib_entry.c
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/fib/fib_entry.c')
-rw-r--r--src/vnet/fib/fib_entry.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/src/vnet/fib/fib_entry.c b/src/vnet/fib/fib_entry.c
index 6edf31b47f3..119a7ac5e77 100644
--- a/src/vnet/fib/fib_entry.c
+++ b/src/vnet/fib/fib_entry.c
@@ -1362,7 +1362,7 @@ fib_entry_cover_updated (fib_node_index_t fib_entry_index)
if (0 == index)
{
/*
- * only the best source gets to set the back walk flags
+ * only the best source gets to set the install result
*/
res = fib_entry_src_action_cover_update(fib_entry, esrc);
bflags = fib_entry_src_get_flags(esrc);
@@ -1370,7 +1370,23 @@ fib_entry_cover_updated (fib_node_index_t fib_entry_index)
}
else
{
- fib_entry_src_action_cover_update(fib_entry, esrc);
+ /*
+ * contirubting sources can set backwalk flags
+ */
+ if (esrc->fes_flags & FIB_ENTRY_SRC_FLAG_CONTRIBUTING)
+ {
+ fib_entry_src_cover_res_t tmp = {
+ .install = !0,
+ .bw_reason = FIB_NODE_BW_REASON_FLAG_NONE,
+ };
+
+ tmp = fib_entry_src_action_cover_update(fib_entry, esrc);
+ res.bw_reason |= tmp.bw_reason;
+ }
+ else
+ {
+ fib_entry_src_action_cover_update(fib_entry, esrc);
+ }
}
index++;
}));