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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/plugins/dpdk/device
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/plugins/dpdk/device')
-rw-r--r--src/plugins/dpdk/device/init.c15
1 files changed, 5 insertions, 10 deletions
diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index b5eb9de444f..461bae0ba62 100644
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -747,8 +747,8 @@ dpdk_lib_init (dpdk_main_t * dm)
}
if (hi)
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
- xd->port_conf.rxmode.max_rx_pkt_len - sizeof (ethernet_header_t);
+ hi->max_packet_bytes = xd->port_conf.rxmode.max_rx_pkt_len
+ - sizeof (ethernet_header_t);
else
clib_warning ("hi NULL");
@@ -1640,9 +1640,6 @@ dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
/* Init l3 packet size allowed on bonded interface */
bhi->max_packet_bytes = ETHERNET_MAX_PACKET_BYTES;
- bhi->max_l3_packet_bytes[VLIB_RX] =
- bhi->max_l3_packet_bytes[VLIB_TX] =
- ETHERNET_MAX_PACKET_BYTES - sizeof (ethernet_header_t);
while (nlink >= 1)
{ /* for all slave links */
int slave = slink[--nlink];
@@ -1681,11 +1678,9 @@ dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
clib_memcpy (shi->hw_address, addr, 6);
clib_memcpy (sei->address, addr, 6);
/* Set l3 packet size allowed as the lowest of slave */
- if (bhi->max_l3_packet_bytes[VLIB_RX] >
- shi->max_l3_packet_bytes[VLIB_RX])
- bhi->max_l3_packet_bytes[VLIB_RX] =
- bhi->max_l3_packet_bytes[VLIB_TX] =
- shi->max_l3_packet_bytes[VLIB_RX];
+ if (bhi->max_packet_bytes > shi->max_packet_bytes)
+ bhi->max_packet_bytes = bhi->max_packet_bytes;
+
/* Set max packet size allowed as the lowest of slave */
if (bhi->max_packet_bytes > shi->max_packet_bytes)
bhi->max_packet_bytes = shi->max_packet_bytes;