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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_node.h
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_node.h')
-rw-r--r--src/vnet/fib/fib_node.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/vnet/fib/fib_node.h b/src/vnet/fib/fib_node.h
index 5cf9182560f..27e67b11c87 100644
--- a/src/vnet/fib/fib_node.h
+++ b/src/vnet/fib/fib_node.h
@@ -119,6 +119,10 @@ typedef enum fib_node_back_walk_reason_t_ {
*/
FIB_NODE_BW_REASON_ADJ_UPDATE,
/**
+ * Walk update the adjacency MTU
+ */
+ FIB_NODE_BW_REASON_ADJ_MTU,
+ /**
* Walk to update children to inform them the adjacency is now down.
*/
FIB_NODE_BW_REASON_ADJ_DOWN,
@@ -135,6 +139,7 @@ typedef enum fib_node_back_walk_reason_t_ {
[FIB_NODE_BW_REASON_INTERFACE_DOWN] = "if-down", \
[FIB_NODE_BW_REASON_INTERFACE_DELETE] = "if-delete", \
[FIB_NODE_BW_REASON_ADJ_UPDATE] = "adj-update", \
+ [FIB_NODE_BW_REASON_ADJ_MTU] = "adj-mtu", \
[FIB_NODE_BW_REASON_ADJ_DOWN] = "adj-down", \
}
@@ -154,6 +159,7 @@ typedef enum fib_node_bw_reason_flag_t_ {
FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN = (1 << FIB_NODE_BW_REASON_INTERFACE_DOWN),
FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE = (1 << FIB_NODE_BW_REASON_INTERFACE_DELETE),
FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE = (1 << FIB_NODE_BW_REASON_ADJ_UPDATE),
+ FIB_NODE_BW_REASON_FLAG_ADJ_MTU = (1 << FIB_NODE_BW_REASON_ADJ_MTU),
FIB_NODE_BW_REASON_FLAG_ADJ_DOWN = (1 << FIB_NODE_BW_REASON_ADJ_DOWN),
} __attribute__ ((packed)) fib_node_bw_reason_flag_t;