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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/adj/rewrite.c
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/adj/rewrite.c')
-rw-r--r--src/vnet/adj/rewrite.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/vnet/adj/rewrite.c b/src/vnet/adj/rewrite.c
index f4b26a9d0dd..1a87793eb1c 100644
--- a/src/vnet/adj/rewrite.c
+++ b/src/vnet/adj/rewrite.c
@@ -103,19 +103,22 @@ vnet_tx_node_index_for_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
void
vnet_rewrite_init (vnet_main_t * vnm,
u32 sw_if_index,
+ vnet_link_t linkt,
u32 this_node, u32 next_node, vnet_rewrite_header_t * rw)
{
rw->sw_if_index = sw_if_index;
rw->next_index = vlib_node_add_next (vnm->vlib_main, this_node, next_node);
rw->max_l3_packet_bytes =
- vnet_sw_interface_get_mtu (vnm, sw_if_index, VLIB_TX);
+ vnet_sw_interface_get_mtu (vnm, sw_if_index, vnet_link_to_mtu (linkt));
}
void
-vnet_rewrite_update_mtu (vnet_main_t * vnm, vnet_rewrite_header_t * rw)
+vnet_rewrite_update_mtu (vnet_main_t * vnm, vnet_link_t linkt,
+ vnet_rewrite_header_t * rw)
{
rw->max_l3_packet_bytes =
- vnet_sw_interface_get_mtu (vnm, rw->sw_if_index, VLIB_TX);
+ vnet_sw_interface_get_mtu (vnm, rw->sw_if_index,
+ vnet_link_to_mtu (linkt));
}
void
@@ -133,7 +136,7 @@ vnet_rewrite_for_sw_interface (vnet_main_t * vnm,
vnet_get_hw_interface_class (vnm, hw->hw_class_index);
u8 *rewrite = NULL;
- vnet_rewrite_init (vnm, sw_if_index, node_index,
+ vnet_rewrite_init (vnm, sw_if_index, link_type, node_index,
vnet_tx_node_index_for_sw_interface (vnm, sw_if_index),
rw);