From d723161e038d00e59766aa67a6a0dcc350227e4b Mon Sep 17 00:00:00 2001 From: Ole Troan Date: Thu, 7 Jun 2018 10:17:57 +0200 Subject: 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 --- src/vnet/interface_api.c | 31 +++++++++++++++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) (limited to 'src/vnet/interface_api.c') diff --git a/src/vnet/interface_api.c b/src/vnet/interface_api.c index 9a1838fa321..e2f4d8fd130 100644 --- a/src/vnet/interface_api.c +++ b/src/vnet/interface_api.c @@ -50,6 +50,7 @@ vpe_api_main_t vpe_api_main; #define foreach_vpe_api_msg \ _(SW_INTERFACE_SET_FLAGS, sw_interface_set_flags) \ +_(HW_INTERFACE_SET_MTU, hw_interface_set_mtu) \ _(SW_INTERFACE_SET_MTU, sw_interface_set_mtu) \ _(WANT_INTERFACE_EVENTS, want_interface_events) \ _(SW_INTERFACE_DUMP, sw_interface_dump) \ @@ -96,9 +97,9 @@ vl_api_sw_interface_set_flags_t_handler (vl_api_sw_interface_set_flags_t * mp) } static void -vl_api_sw_interface_set_mtu_t_handler (vl_api_sw_interface_set_mtu_t * mp) +vl_api_hw_interface_set_mtu_t_handler (vl_api_hw_interface_set_mtu_t * mp) { - vl_api_sw_interface_set_mtu_reply_t *rmp; + vl_api_hw_interface_set_mtu_reply_t *rmp; vnet_main_t *vnm = vnet_get_main (); u32 sw_if_index = ntohl (mp->sw_if_index); u16 mtu = ntohs (mp->mtu); @@ -137,6 +138,27 @@ vl_api_sw_interface_set_mtu_t_handler (vl_api_sw_interface_set_mtu_t * mp) vnet_hw_interface_set_mtu (vnm, si->hw_if_index, mtu); + BAD_SW_IF_INDEX_LABEL; + REPLY_MACRO (VL_API_HW_INTERFACE_SET_MTU_REPLY); +} + +static void +vl_api_sw_interface_set_mtu_t_handler (vl_api_sw_interface_set_mtu_t * mp) +{ + vl_api_sw_interface_set_mtu_reply_t *rmp; + vnet_main_t *vnm = vnet_get_main (); + u32 sw_if_index = ntohl (mp->sw_if_index); + int rv = 0; + int i; + u32 per_protocol_mtu[VNET_N_MTU]; + + VALIDATE_SW_IF_INDEX (mp); + + for (i = 0; i < VNET_N_MTU; i++) + per_protocol_mtu[i] = ntohl (mp->mtu[i]); + + vnet_sw_interface_set_protocol_mtu (vnm, sw_if_index, per_protocol_mtu); + BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_SW_INTERFACE_SET_MTU_REPLY); } @@ -162,6 +184,11 @@ send_sw_interface_details (vpe_api_main_t * am, mp->link_speed = ((hi->flags & VNET_HW_INTERFACE_FLAG_SPEED_MASK) >> VNET_HW_INTERFACE_FLAG_SPEED_SHIFT); mp->link_mtu = ntohs (hi->max_packet_bytes); + mp->mtu[VNET_MTU_L3] = ntohl (swif->mtu[VNET_MTU_L3]); + mp->mtu[VNET_MTU_IP4] = ntohl (swif->mtu[VNET_MTU_IP4]); + mp->mtu[VNET_MTU_IP6] = ntohl (swif->mtu[VNET_MTU_IP6]); + mp->mtu[VNET_MTU_MPLS] = ntohl (swif->mtu[VNET_MTU_MPLS]); + mp->context = context; strncpy ((char *) mp->interface_name, -- cgit 1.2.3-korg