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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/dpo/dpo.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/dpo/dpo.c')
-rw-r--r--src/vnet/dpo/dpo.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/vnet/dpo/dpo.c b/src/vnet/dpo/dpo.c
index 1331b5501bc..d8342ff17ae 100644
--- a/src/vnet/dpo/dpo.c
+++ b/src/vnet/dpo/dpo.c
@@ -23,6 +23,8 @@
* The VLIB graph nodes are graph of types, the DPO graph is a graph of instances.
*/
+// clang-format off
+
#include <vnet/dpo/dpo.h>
#include <vnet/ip/lookup.h>
#include <vnet/ip/format.h>
@@ -395,6 +397,18 @@ dpo_get_urpf(const dpo_id_t *dpo)
return (~0);
}
+u16
+dpo_get_mtu(const dpo_id_t *dpo)
+{
+ if (dpo_id_is_valid(dpo) &&
+ (NULL != dpo_vfts[dpo->dpoi_type].dv_get_mtu))
+ {
+ return (dpo_vfts[dpo->dpoi_type].dv_get_mtu(dpo));
+ }
+
+ return (0xffff);
+}
+
static u32
dpo_get_next_node (dpo_type_t child_type,
dpo_proto_t child_proto,
@@ -649,3 +663,5 @@ VLIB_CLI_COMMAND (show_fib_memory, static) = {
.short_help = "show dpo memory",
};
/* *INDENT-ON* */
+
+// clang-format on