diff options
Diffstat (limited to 'src/vnet/interface.c')
| -rw-r--r-- | src/vnet/interface.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/vnet/interface.c b/src/vnet/interface.c index 982abbd0199..05a1c7c34a9 100644 --- a/src/vnet/interface.c +++ b/src/vnet/interface.c @@ -768,18 +768,25 @@ sw_interface_walk_callback (vnet_main_t * vnm, u32 sw_if_index, void *ctx) return WALK_CONTINUE; } -void -vnet_hw_interface_set_mtu (vnet_main_t * vnm, u32 hw_if_index, u32 mtu) +clib_error_t * +vnet_hw_interface_set_mtu (vnet_main_t *vnm, u32 hw_if_index, u32 mtu) { vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); if (hi->max_packet_bytes != mtu) { + if (mtu > hi->max_supported_packet_bytes || + mtu < hi->min_supported_packet_bytes) + return vnet_error (VNET_ERR_INVALID_VALUE, + "requested mtu must be in the %u to %u range", + hi->min_supported_packet_bytes, + hi->max_supported_packet_bytes); hi->max_packet_bytes = mtu; ethernet_set_flags (vnm, hw_if_index, ETHERNET_INTERFACE_FLAG_MTU); vnet_hw_interface_walk_sw (vnm, hw_if_index, sw_interface_walk_callback, &mtu); } + return 0; } static void |