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Fix MTU size for the bonded interface

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Configure the MTU/L3 packet size of the bonded interface
as the lowest value of the slave intefaces

Change-Id: I34fb4c2156e8ad3d9bf45efe332405d53f72867c
Signed-off-by: Steve Shin <jonshin@cisco.com>
This commit is contained in:
Steve Shin
2016-09-07 08:25:04 -07:00
committed by Damjan Marion
parent f5a0e73e53
commit bf1fa7fa39
1 changed files with 12 additions and 0 deletions
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12
vnet/vnet/devices/dpdk/init.c
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@ -1688,6 +1688,7 @@ dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
clib_memcpy (bhi->hw_address, addr, 6);
clib_memcpy (bei->address, addr, 6);
/* 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);
@ -1713,6 +1714,17 @@ dpdk_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
vnet_get_sw_interface (vnm, sdev->vlib_sw_if_index);
shi->bond_info = VNET_HW_INTERFACE_BOND_INFO_SLAVE;
ssi->flags |= VNET_SW_INTERFACE_FLAG_BOND_SLAVE;
/* 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];
/* 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;
}
}
}