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Descriptions of section entries:

	M: Maintainer Full name and E-mail address: Full Name <address@domain>
	   One maintainer per line.  Multiple M: lines acceptable.
	F: Files and directories with wildcard patterns.
	   A trailing slash includes all files and subdirectory files.
	   F:	drivers/net/	all files in and below drivers/net
	   F:	drivers/net/*	all files in drivers/net, but not below
	   One pattern per line.  Multiple F: lines acceptable.
	E: exclude file(s) matched by F:
	C: Single line comment related to current section.
	I: single word feature/component identifier
	Y: path to feature YAML file

		-----------------------------------

Build System
I:	build
M:	Damjan Marion <damarion@cisco.com>
F:	Makefile
F:	src/CMakeLists.txt
F:	src/cmake/
F:	build/

Build System Internal
I:	ebuild
M:	Dave Barach <dave@barachs.net>
F:	build-root/Makefile
F:	build-data/

Link Bonding
I:	bonding
M:	Steven Luong <sluong@cisco.com>
F:	src/vnet/bonding/

Doxygen
I:	doxygen
M:	Chris Luke <chrisy@flirble.org>
F:	doxygen/

Sphinx Documents
I:	docs
M:	John DeNisco <jdenisco@cisco.com>
M:	Ray Kinsella <raykinsella78@gmail.com>
F:	docs/

Infrastructure Library
I:	vppinfra
M:	Dave Barach <dave@barachs.net>
F:	src/vppinfra/

Physical Memory Allocator
I:	pmalloc
M:	Damjan Marion <damarion@cisco.com>
F:	src/vppinfra/pmalloc.[ch]

Vector Library
I:	vlib
M:	Dave Barach <dave@barachs.net>
M:	Damjan Marion <damarion@cisco.com>
F:	src/vlib/
E:	src/vlib/buffer*.[ch]
E:	src/vlib/pci/
E:	src/vlib/linux/pci.[ch]
E:	src/vlib/linux/vfio.[ch]

Vector Library - Buffer Management
I:	buffers
M:	Damjan Marion <damarion@cisco.com>
M:	Dave Barach <dave@barachs.net>
F:	src/vlib/buffer*.[ch]

Vector Library - PCI
I:	pci
M:	Damjan Marion <damarion@cisco.com>
F:	src/vlib/pci/
F:	src/vlib/linux/pci.[ch]
F:	src/vlib/linux/vfio.[ch]

Binary API Libraries
I:	api
M:	Dave Barach <dave@barachs.net>
F:	src/vlibapi/
F:	src/vlibmemory/

VNET Bidirectional Forwarding Detection (BFD)
I:	bfd
M:	Klement Sekera <ksekera@cisco.com>
F:	src/vnet/bfd/

VNET Classifier
I:	classify
M:	Dave Barach <dave@barachs.net>
F:	src/vnet/classify

VNET Policer
I:	policer
M:	N/A
F:	src/vnet/policer/

VNET Device Drivers
I:	devices
Y:	src/vnet/devices/af_packet/FEATURE.yaml
Y:	src/vnet/devices/pipe/FEATURE.yaml
M:	Damjan Marion <damarion@cisco.com>
F:	src/vnet/devices/

VNET TAP Drivers
I:	tap
Y:	src/vnet/devices/tap/FEATURE.yaml
M:	Damjan Marion <damarion@cisco.com>
M:	Steven Luong <sluong@cisco.com>
M:	Mohsin Kazmi <sykazmi@cisco.com>
F:	src/vnet/devices/tap/

VNET Native Virtio Drivers
I:	virtio
Y:	src/vnet/devices/virtio/FEATURE.yaml
M:	Mohsin Kazmi <sykazmi@cisco.com>
M:	Damjan Marion <damarion@cisco.com>
F:	src/vnet/devices/virtio/

VNET Ethernet
I:	ethernet
M:	Dave Barach <dave@barachs.net>
M:	Damjan Marion <damarion@cisco.com>
F:	src/vnet/ethernet/

VNET Feature Arcs
I:	feature
M:	Dave Barach <dave@barachs.net>
M:	Damjan Marion <damarion@cisco.com>
F:	src/vnet/feature/

VNET FIB
I:	fib
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/fib/
F:	src/vnet/mfib/
F:	src/vnet/dpo
F:	src/vnet/adj

VNET IPv4 LPM
I:	ip
M:	Dave Barach <dave@barachs.net>
F:	src/vnet/ip/

VNET IPv6 LPM
I:	ip6
M:	Neale Ranns <nranns@cisco.com>
M:	Jon Loeliger <jdl@netgate.com>
F:	src/vnet/ip/

VNET IP Neighbors
I:	ip-neighbor
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/ip-neighbor

VNET QoS
I:	qos
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/qos/

VNET Interface Common
I:	interface
M:	Dave Barach <dave@barachs.net>
F:	src/vnet/interface*.[ch]

VNET Packet Generator
I:	pg
M:	Dave Barach <dave@barachs.net>
F:	src/vnet/pg/

VNET Segment Routing (IPv6 and MPLS)
I:	sr
M:	Pablo Camarillo <pcamaril@cisco.com>
F:	src/vnet/srv6/
F:	src/vnet/srmpls/
F:	src/examples/srv6-sample-localsid/

VNET IPSec
I:	ipsec
M:	Neale Ranns <nranns@cisco.com>
M:	Radu Nicolau <radu.nicolau@intel.com>
F:	src/vnet/ipsec/

VNET Crypto Infra
I:	crypto
M:	Damjan Marion <damarion@cisco.com>
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/crypto/

VNET TEIB
I:	teib
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/teib/

VNET SPAN
I:	span
M:	N/A
F:	src/vnet/span

Plugin - Crypto - native
I:	crypto-native
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/crypto_native/

Plugin - Crypto - OpenSSL
I:	crypto-openssl
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/crypto_openssl/

Plugin - Crypto - ipsecmb
I:	crypto-ipsecmb
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/crypto_ipsecmb/

VNET L2
I:	l2
M:	John Lo <loj@cisco.com>
F:	src/vnet/l2/

VNET Link Layer Discovery Protocol (LLDP)
I:	lldp
M:	Klement Sekera <ksekera@cisco.com>
F:	src/vnet/lldp/

VNET LISP
I:	lisp
Y:	src/vnet/lisp-cp/FEATURE.yaml
Y:	src/vnet/lisp-gpe/FEATURE.yaml
M:	Florin Coras <fcoras@cisco.com>
F:	src/vnet/lisp-cp/
F:	src/vnet/lisp-gpe/

VNET GRE
I:	gre
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/gre/

VNET GSO
I:	gso
M:	Andrew Yourtchenko <ayourtch@gmail.com>
M:	Mohsin Kazmi <sykazmi@cisco.com>
F:	src/vnet/gso/

Plugin - MAP
I:	map
Y:	src/plugins/map/FEATURE.yaml
M:	Ole Troan <ot@cisco.com>
M:	Jon Loeliger <jdl@netgate.com>
F:	src/plugins/map

VNET MPLS
I:	mpls
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/mpls/

VNET BIER
I:	bier
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/bier/

VNET Session Layer
I:	session
Y:	src/vnet/session/FEATURE.yaml
M:	Florin Coras <fcoras@cisco.com>
F:	src/vnet/session

VNET TCP
I:	tcp
Y:	src/vnet/tcp/FEATURE.yaml
M:	Florin Coras <fcoras@cisco.com>
F:	src/vnet/tcp

VNET UDP
I:	udp
Y:	src/vnet/udp/FEATURE.yaml
M:	Florin Coras <fcoras@cisco.com>
F:	src/vnet/udp

VNET VXLAN
I:	vxlan
M:	John Lo <loj@cisco.com>
F:	src/vnet/vxlan/

VNET VXLAN-GPE
I:	vxlan-gpe
M:	Hongjun Ni <hongjun.ni@intel.com>
F:	src/vnet/vxlan-gpe/

VNET VXLAN-GBP
I:	vxlan-gbp
M:	Mohsin Kazmi <sykazmi@cisco.com>
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/vxlan-gbp/

VNET IPIP
I:	ipip
Y:	src/vnet/ipip/FEATURE.yaml
M:	Ole Troan <otroan@employees.org>
F:	src/vnet/ipip/

VNET tunnel
I:	tunnel
M:	Neale Ranns <nranns@cisco.com>
F:	src/vnet/tunnel'

VNET TLS and TLS engine plugins
I:	tls
M:	Florin Coras <fcoras@cisco.com>
M:	Ping Yu <ping.yu@intel.com>
F:	src/vnet/tls
F:	src/plugins/tlsopenssl
F:	src/plugins/tlsmbedtls
F:	src/plugins/tlspicotls

VNET SYSLOG
I:	syslog
M:	Matus Fabian <matfabia@cisco.com>
F:	src/vnet/syslog

Plugin - DHCP
I:	dhcp
M:	Dave Barach <dave@barachs.net>
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/dhcp/

Plugin - ARP
I:	arp
M:	Dave Barach <dave@barachs.net>
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/arp/

Plugin - IP6 Neighbor Discovery
I:	ip6-nd
M:	Dave Barach <dave@barachs.net>
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/ip6-nd/

VNET GENEVE
I:	geneve
M:	N/A
F:	src/vnet/geneve/

VNET FLOW
I:	flow
M:	Damjan Marion <damarion@cisco.com>
F:	src/vnet/flow/

VNET Classify
I:	classify
M:	N/A
F:	src/vnet/classify/

VPP Main App
I:	vpp
M:	Dave Barach <dave@barachs.net>
M:	Damjan Marion <damarion@cisco.com>
F:	src/vpp/

Plugin - Access Control List (ACL) Based Forwarding
I:	abf
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/abf/

Plugin - Allow / Deny List
I:	adl
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/adl/

Plugin - Simple DNS name resolver
I:	dns
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/dns/

Plugin - Group Based Policy (GBP)
I:	gbp
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/gbp/

Plugin - ACL
I:	acl
M:	Andrew Yourtchenko <ayourtch@gmail.com>
F:	src/plugins/acl/

Plugin - NAT
I:      nat
M:      Ole Troan <ot@cisco.com>
F:      src/plugins/nat/

Plugin - AVF Device driver
I:	avf
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/avf/

Plugin - DPDK
I:	dpdk
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/dpdk/

Plugin - DPDK Crypto
I:	dpdk-ipsec
M:	Sergio Gonzalez Monroy <sergio.gonzalez.monroy@outlook.com>
M:	Radu Nicolau <radu.nicolau@intel.com>
F:	src/plugins/dpdk/ipsec/

Plugin - flowprobe
I:	flowprobe
Y:	src/plugins/flowprobe/FEATURE.yaml
M:	Ole Troan <otroan@employees.org>
F:	src/plugins/flowprobe/

Plugin - http_static
I:	http_static
M:	Dave Barach <dbarach@cisco.com>
F:	src/plugins/http_static/

Plugin - builtinurl
I:	builtinurl
M:	Dave Barach <dbarach@cisco.com>
F:	src/plugins/builtinurl/

Plugin - Group Based Policy (GBP)
I:	gbp
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/gbp/

Plugin - GTPU
I:	gtpu
M:	Hongjun Ni <hongjun.ni@intel.com>
F:	src/plugins/gtpu/

Plugin - Internet Key Exchange (IKEv2) Protocol
I:	ikev2
M:	Damjan Marion <damarion@cisco.com>
M:	Neale Ranns <nranns@cisco.com>
M:	Filip Tehlar <ftehlar@cisco.com>
M:	Benoît Ganne <bganne@cisco.com>
F:	src/plugins/ikev2/

Plugin - Internet Group Management Protocol (IGMP)
I:	igmp
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/igmp/

Plugin - L3 Cross-Connect (L3XC)
I:	l3xc
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/l3xc/

Plugin - memif device driver
I:	memif
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/memif/

Plugin - Marvell MUSDK device driver
I:	marvell
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/marvell/

Plugin - performance counter
I:	perfmon
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/perfmon/

Plugin - PPPoE
I:	pppoe
M:	Hongjun Ni <hongjun.ni@intel.com>
F:	src/plugins/pppoe/

Plugin - Ping
I:	ping
M:	Andrew Yourtchenko <ayourtch@gmail.com>
F:	src/plugins/ping

Plugin - IPv6 Segment Routing Dynamic Proxy
I:	srv6-ad
M:	Francois Clad <fclad@cisco.com>
F:	src/plugins/srv6-ad/

Plugin - IPv6 Segment Routing Masquerading Proxy
I:	srv6-am
M:	Francois Clad <fclad@cisco.com>
F:	src/plugins/srv6-am/

Plugin - IPv6 Segment Routing Static Proxy
I:	srv6-as
M:	Francois Clad <fclad@cisco.com>
F:	src/plugins/srv6-as/

Plugin - IPv6 Segment Routing Mobile
I:      srv6-mobile
M:      Tetsuya Murakami <tetsuya.mrk@gmail.com>
M:	Satoru Matsushima <satoru.matsushima@gmail.com>
F:      src/plugins/srv6-mobile/

Plugin - Link Aggregation Control Protocol
I:	lacp
M:	Steven Luong <sluong@cisco.com>
F:	src/plugins/lacp/

Plugin - Load Balancer
I:	lb
M:	Pfister <ppfister@cisco.com>
M:	Hongjun Ni <hongjun.ni@intel.com>
F:	src/plugins/lb/

Plugin - NSH
I:	nsh
M:	Hongjun Ni <hongjun.ni@intel.com>
M:	Vengada <venggovi@cisco.com>
F:	src/plugins/nsh/

Plugin - Time-based MAC filter
I:	mactime
Y:	src/plugins/mactime/FEATURE.yaml
M:	Dave Barach <dave@barachs.net>
F:      src/plugins/mactime/

Plugin - Network Delay Simulator
I:	nsim
Y:	src/plugins/nsim/FEATURE.yaml
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/nsim/

Plugin - Buffer Metadata Modification Tracker
I:	mdata
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/mdata/

Plugin - Unit Tests
I:	unittest
M:	Dave Barach <dave@barachs.net>
M:	Florin Coras <fcoras@cisco.com
F:	src/plugins/unittest/

Test Infrastructure
I:	tests
M:	Klement Sekera <ksekera@cisco.com>
M:	Paul Vinciguerra <pvinci@vinciconsulting.com>
F:	test/

SVM Library
I:	svm
M:	Dave Barach <dave@barachs.net>
F:	src/svm

VPP API TEST
I:	vat
M:	Dave Barach <dave@barachs.net>
F:	src/vat/

VPP Executable
I:	vpp
M:	Dave Barach <dave@barachs.net>
F:	src/vpp/

Emacs templates
I:	emacs
M:	Dave Barach <dave@barachs.net>
F:	extras/emacs/

Graphical Event Viewer
I:	g2
M:	Dave Barach <dave@barachs.net>
F:	src/tools/g2/

Performance Tooling
I:	perftool
M:	Dave Barach <dave@barachs.net>
F:	src/tools/perftool/

Plugin - vmxnet3 device driver
I:	vmxnet3
M:	Steven Luong <sluong@cisco.com>
F:	src/plugins/vmxnet3/

Binary API Compiler for Python
I:	vppapigen
M:	Ole Troan <otroan@employees.org>
F:	src/tools/vppapigen/

API trace tool
I:	vppapitrace
M:	Ole Troan <otroan@employees.org>
F:	src/tools/vppapitrace/

Binary API Compiler for C and C++
I:	vapi
M:	Ole Troan <ot@cisco.com>
F:	src/vpp-api/vapi

Plugin - RDMA (ibverb) driver
I:	rdma
M:	Benoît Ganne <bganne@cisco.com>
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/rdma/

Plugin - QUIC protocol
I:	quic
M:	Aloys Augustin <aloaugus@cisco.com>
M:	Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
M:	Dave Wallace <dwallacelf@gmail.com>
M:	Florin Coras <fcoras@cisco.com>
Y:	src/plugins/quic/FEATURE.yaml
F:	src/plugins/quic/

libmemif
I:	libmemif
M:	Damjan Marion <damarion@cisco.com>
F:	extras/libmemif

gomemif
I:	gomemif
M:	Jakub Grajciar <jgrajcia@cisco.com>
F:	extras/gomemif

VPP Comms Library
I:	vcl
Y:	src/vnet/vcl/FEATURE.yaml
M:	Florin Coras <fcoras@cisco.com>
F:	src/vcl

Statistics Segment
I:	stats
M:	Ole Troan <ot@cisco.com>
F:	src/vpp/stats/
F:	src/vpp-api/client/stat_client.[ch]

Plugin - Host Stack Applications
I:	hsa
M:	Florin Coras <fcoras@cisco.com>
M:	Dave Wallace <dwallacelf@gmail.com>
M:	Aloys Augustin <aloaugus@cisco.com>
M:	Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
F:	src/plugins/hs_apps/

Python binding for the VPP API
I:	papi
M:	Ole Troan <ot@cisco.com>
F:	src/vpp-api/python

Cisco Discovery Protocol
I:	cdp
F:	src/plugins/cdp/

Source VRF Select
I:	svs
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/svs/

LAN Emulation
I:	l2e
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/l2e/

IPv6 Connection Tracker
I:	ct6
M:	Dave Barach <dave@barachs.net>
F:	src/plugins/ct6

Steal The NIC
I:	stn
F:	src/plugins/stn

IOAM
I:	ioam
F:	src/plugins/ioam

Awkward chained buffer geometry tool
I:	oddbuf
F:	src/plugins/oddbuf

Plugin - VRRP
I:	vrrp
M:	Matthew Smith <mgsmith@netgate.com>
F:	src/plugins/vrrp

Plugin - Unicast Reverse Path forwarding
I:	urpf
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/urpf

Plugin - CNat
I:	cnat
M:	Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
M:	Neale Ranns <nranns@cisco.com>
F:	src/plugins/cnat

Plugin - Wireguard
I:	wireguard
M:	Artem Glazychev <artem.glazychev@xored.com>
F:	src/plugins/wireguard

VPP Config Tooling
I:	vpp_config
M:	John DeNisco <jdenisco@cisco.com>
F:	extras/vpp_config

bash functions
I:	bash
M:	Dave Wallace <dwallacelf@gmail.com>
F:	extras/bash/

Plugin - AF_XDP driver
I:	af_xdp
M:	Benoît Ganne <bganne@cisco.com>
M:	Damjan Marion <damarion@cisco.com>
F:	src/plugins/af_xdp/

Plugin - geneve
I:	geneve
M:	community vpp-dev@lists.fd.io
F:	src/plugins/geneve/

THE REST
I:	misc
C:	Contact vpp-dev Mailing List <vpp-dev@fd.io>
F:	*
F:	*/
id='n1402' href='#n1402'>1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468
/*
 * Copyright (c) 2015 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * interface.c: VNET interfaces/sub-interfaces
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/adj/adj.h>
#include <vnet/adj/adj_mcast.h>

#define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
#define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)

static clib_error_t *vnet_hw_interface_set_flags_helper (vnet_main_t * vnm,
							 u32 hw_if_index,
							 u32 flags,
							 u32 helper_flags);

static clib_error_t *vnet_sw_interface_set_flags_helper (vnet_main_t * vnm,
							 u32 sw_if_index,
							 u32 flags,
							 u32 helper_flags);

static clib_error_t *vnet_hw_interface_set_class_helper (vnet_main_t * vnm,
							 u32 hw_if_index,
							 u32 hw_class_index,
							 u32 redistribute);

typedef struct
{
  /* Either sw or hw interface index. */
  u32 sw_hw_if_index;

  /* Flags. */
  u32 flags;
} vnet_sw_hw_interface_state_t;

static void
serialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m, va_list * va)
{
  vnet_sw_hw_interface_state_t *s =
    va_arg (*va, vnet_sw_hw_interface_state_t *);
  u32 n = va_arg (*va, u32);
  u32 i;
  for (i = 0; i < n; i++)
    {
      serialize_integer (m, s[i].sw_hw_if_index,
			 sizeof (s[i].sw_hw_if_index));
      serialize_integer (m, s[i].flags, sizeof (s[i].flags));
    }
}

static void
unserialize_vec_vnet_sw_hw_interface_state (serialize_main_t * m,
					    va_list * va)
{
  vnet_sw_hw_interface_state_t *s =
    va_arg (*va, vnet_sw_hw_interface_state_t *);
  u32 n = va_arg (*va, u32);
  u32 i;
  for (i = 0; i < n; i++)
    {
      unserialize_integer (m, &s[i].sw_hw_if_index,
			   sizeof (s[i].sw_hw_if_index));
      unserialize_integer (m, &s[i].flags, sizeof (s[i].flags));
    }
}

static void
serialize_vnet_sw_hw_interface_set_flags (serialize_main_t * m, va_list * va)
{
  vnet_sw_hw_interface_state_t *s =
    va_arg (*va, vnet_sw_hw_interface_state_t *);
  serialize (m, serialize_vec_vnet_sw_hw_interface_state, s, 1);
}

static void
unserialize_vnet_sw_interface_set_flags (serialize_main_t * m, va_list * va)
{
  CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
  vnet_sw_hw_interface_state_t s;

  unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);

  vnet_sw_interface_set_flags_helper
    (vnet_get_main (), s.sw_hw_if_index, s.flags,
     /* helper_flags no redistribution */ 0);
}

static void
unserialize_vnet_hw_interface_set_flags (serialize_main_t * m, va_list * va)
{
  CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
  vnet_sw_hw_interface_state_t s;

  unserialize (m, unserialize_vec_vnet_sw_hw_interface_state, &s, 1);

  vnet_hw_interface_set_flags_helper
    (vnet_get_main (), s.sw_hw_if_index, s.flags,
     /* helper_flags no redistribution */ 0);
}

MC_SERIALIZE_MSG (vnet_sw_interface_set_flags_msg, static) =
{
.name = "vnet_sw_interface_set_flags",.serialize =
    serialize_vnet_sw_hw_interface_set_flags,.unserialize =
    unserialize_vnet_sw_interface_set_flags,};

MC_SERIALIZE_MSG (vnet_hw_interface_set_flags_msg, static) =
{
.name = "vnet_hw_interface_set_flags",.serialize =
    serialize_vnet_sw_hw_interface_set_flags,.unserialize =
    unserialize_vnet_hw_interface_set_flags,};

void
serialize_vnet_interface_state (serialize_main_t * m, va_list * va)
{
  vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
  vnet_sw_hw_interface_state_t *sts = 0, *st;
  vnet_sw_interface_t *sif;
  vnet_hw_interface_t *hif;
  vnet_interface_main_t *im = &vnm->interface_main;

  /* Serialize hardware interface classes since they may have changed.
     Must do this before sending up/down flags. */
  /* *INDENT-OFF* */
  pool_foreach (hif, im->hw_interfaces, ({
    vnet_hw_interface_class_t * hw_class = vnet_get_hw_interface_class (vnm, hif->hw_class_index);
    serialize_cstring (m, hw_class->name);
  }));
  /* *INDENT-ON* */

  /* Send sw/hw interface state when non-zero. */
  /* *INDENT-OFF* */
  pool_foreach (sif, im->sw_interfaces, ({
    if (sif->flags != 0)
      {
	vec_add2 (sts, st, 1);
	st->sw_hw_if_index = sif->sw_if_index;
	st->flags = sif->flags;
      }
  }));
  /* *INDENT-ON* */

  vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);

  if (sts)
    _vec_len (sts) = 0;

  /* *INDENT-OFF* */
  pool_foreach (hif, im->hw_interfaces, ({
    if (hif->flags != 0)
      {
	vec_add2 (sts, st, 1);
	st->sw_hw_if_index = hif->hw_if_index;
	st->flags = hif->flags;
      }
  }));
  /* *INDENT-ON* */

  vec_serialize (m, sts, serialize_vec_vnet_sw_hw_interface_state);

  vec_free (sts);
}

void
unserialize_vnet_interface_state (serialize_main_t * m, va_list * va)
{
  vnet_main_t *vnm = va_arg (*va, vnet_main_t *);
  vnet_sw_hw_interface_state_t *sts = 0, *st;

  /* First set interface hardware class. */
  {
    vnet_interface_main_t *im = &vnm->interface_main;
    vnet_hw_interface_t *hif;
    char *class_name;
    uword *p;
    clib_error_t *error;

    /* *INDENT-OFF* */
    pool_foreach (hif, im->hw_interfaces, ({
      unserialize_cstring (m, &class_name);
      p = hash_get_mem (im->hw_interface_class_by_name, class_name);
      ASSERT (p != 0);
      error = vnet_hw_interface_set_class_helper (vnm, hif->hw_if_index, p[0], /* redistribute */ 0);
      if (error)
	clib_error_report (error);
      vec_free (class_name);
    }));
    /* *INDENT-ON* */
  }

  vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
  vec_foreach (st, sts)
    vnet_sw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
					/* no distribute */ 0);
  vec_free (sts);

  vec_unserialize (m, &sts, unserialize_vec_vnet_sw_hw_interface_state);
  vec_foreach (st, sts)
    vnet_hw_interface_set_flags_helper (vnm, st->sw_hw_if_index, st->flags,
					/* no distribute */ 0);
  vec_free (sts);
}

static clib_error_t *
call_elf_section_interface_callbacks (vnet_main_t * vnm, u32 if_index,
				      u32 flags,
				      _vnet_interface_function_list_elt_t **
				      elts)
{
  _vnet_interface_function_list_elt_t *elt;
  vnet_interface_function_priority_t prio;
  clib_error_t *error = 0;

  for (prio = VNET_ITF_FUNC_PRIORITY_LOW;
       prio <= VNET_ITF_FUNC_PRIORITY_HIGH; prio++)
    {
      elt = elts[prio];

      while (elt)
	{
	  error = elt->fp (vnm, if_index, flags);
	  if (error)
	    return error;
	  elt = elt->next_interface_function;
	}
    }
  return error;
}

static clib_error_t *
call_hw_interface_add_del_callbacks (vnet_main_t * vnm, u32 hw_if_index,
				     u32 is_create)
{
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_hw_interface_class_t *hw_class =
    vnet_get_hw_interface_class (vnm, hi->hw_class_index);
  vnet_device_class_t *dev_class =
    vnet_get_device_class (vnm, hi->dev_class_index);
  clib_error_t *error = 0;

  if (hw_class->interface_add_del_function
      && (error =
	  hw_class->interface_add_del_function (vnm, hw_if_index, is_create)))
    return error;

  if (dev_class->interface_add_del_function
      && (error =
	  dev_class->interface_add_del_function (vnm, hw_if_index,
						 is_create)))
    return error;

  error = call_elf_section_interface_callbacks
    (vnm, hw_if_index, is_create, vnm->hw_interface_add_del_functions);

  return error;
}

static clib_error_t *
call_sw_interface_add_del_callbacks (vnet_main_t * vnm, u32 sw_if_index,
				     u32 is_create)
{
  return call_elf_section_interface_callbacks
    (vnm, sw_if_index, is_create, vnm->sw_interface_add_del_functions);
}

#define VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE (1 << 0)
#define VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE (1 << 1)

static clib_error_t *
vnet_hw_interface_set_flags_helper (vnet_main_t * vnm, u32 hw_if_index,
				    u32 flags, u32 helper_flags)
{
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_hw_interface_class_t *hw_class =
    vnet_get_hw_interface_class (vnm, hi->hw_class_index);
  vnet_device_class_t *dev_class =
    vnet_get_device_class (vnm, hi->dev_class_index);
  vlib_main_t *vm = vnm->vlib_main;
  u32 mask;
  clib_error_t *error = 0;
  u32 is_create =
    (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;

  mask =
    (VNET_HW_INTERFACE_FLAG_LINK_UP | VNET_HW_INTERFACE_FLAG_DUPLEX_MASK |
     VNET_HW_INTERFACE_FLAG_SPEED_MASK);
  flags &= mask;

  /* Call hardware interface add/del callbacks. */
  if (is_create)
    call_hw_interface_add_del_callbacks (vnm, hw_if_index, is_create);

  /* Already in the desired state? */
  if (!is_create && (hi->flags & mask) == flags)
    goto done;

  /* Some interface classes do not redistribute (e.g. are local). */
  if (!dev_class->redistribute)
    helper_flags &= ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;

  if (vm->mc_main
      && (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
    {
      vnet_sw_hw_interface_state_t s;
      s.sw_hw_if_index = hw_if_index;
      s.flags = flags;
      mc_serialize (vm->mc_main, &vnet_hw_interface_set_flags_msg, &s);
    }

  if ((hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) !=
      (flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
    {
      /* Do hardware class (e.g. ethernet). */
      if (hw_class->link_up_down_function
	  && (error = hw_class->link_up_down_function (vnm, hw_if_index,
						       flags)))
	goto done;

      error = call_elf_section_interface_callbacks
	(vnm, hw_if_index, flags, vnm->hw_interface_link_up_down_functions);

      if (error)
	goto done;
    }

  hi->flags &= ~mask;
  hi->flags |= flags;

done:
  return error;
}

static clib_error_t *
vnet_sw_interface_set_flags_helper (vnet_main_t * vnm, u32 sw_if_index,
				    u32 flags, u32 helper_flags)
{
  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
  vlib_main_t *vm = vnm->vlib_main;
  u32 mask;
  clib_error_t *error = 0;
  u32 is_create =
    (helper_flags & VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE) != 0;
  u32 old_flags;

  mask = VNET_SW_INTERFACE_FLAG_ADMIN_UP | VNET_SW_INTERFACE_FLAG_PUNT;
  flags &= mask;

  if (is_create)
    {
      error =
	call_sw_interface_add_del_callbacks (vnm, sw_if_index, is_create);
      if (error)
	goto done;

      if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
	{
	  /* Notify everyone when the interface is created as admin up */
	  error = call_elf_section_interface_callbacks (vnm, sw_if_index,
							flags,
							vnm->
							sw_interface_admin_up_down_functions);
	  if (error)
	    goto done;
	}
    }
  else
    {
      vnet_sw_interface_t *si_sup = si;

      /* Check that super interface is in correct state. */
      if (si->type == VNET_SW_INTERFACE_TYPE_SUB)
	{
	  si_sup = vnet_get_sw_interface (vnm, si->sup_sw_if_index);

	  /* Check to see if we're bringing down the soft interface and if it's parent is up */
	  if ((flags != (si_sup->flags & mask)) &&
	      (!((flags == 0)
		 && ((si_sup->flags & mask) ==
		     VNET_SW_INTERFACE_FLAG_ADMIN_UP))))
	    {
	      error = clib_error_return (0, "super-interface %U must be %U",
					 format_vnet_sw_interface_name, vnm,
					 si_sup,
					 format_vnet_sw_interface_flags,
					 flags);
	      goto done;
	    }
	}

      /* Donot change state for slave link of bonded interfaces */
      if (si->flags & VNET_SW_INTERFACE_FLAG_BOND_SLAVE)
	{
	  error = clib_error_return
	    (0, "not allowed as %U belong to a BondEthernet interface",
	     format_vnet_sw_interface_name, vnm, si);
	  goto done;
	}

      /* Already in the desired state? */
      if ((si->flags & mask) == flags)
	goto done;

      /* Sub-interfaces of hardware interfaces that do no redistribute,
         do not redistribute themselves. */
      if (si_sup->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
	{
	  vnet_hw_interface_t *hi =
	    vnet_get_hw_interface (vnm, si_sup->hw_if_index);
	  vnet_device_class_t *dev_class =
	    vnet_get_device_class (vnm, hi->dev_class_index);
	  if (!dev_class->redistribute)
	    helper_flags &=
	      ~VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE;
	}

      if (vm->mc_main
	  && (helper_flags &
	      VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE))
	{
	  vnet_sw_hw_interface_state_t s;
	  s.sw_hw_if_index = sw_if_index;
	  s.flags = flags;
	  mc_serialize (vm->mc_main, &vnet_sw_interface_set_flags_msg, &s);
	}

      /* set the flags now before invoking the registered clients
       * so that the state they query is consistent with the state here notified */
      old_flags = si->flags;
      si->flags &= ~mask;
      si->flags |= flags;
      if ((flags | old_flags) & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
	error = call_elf_section_interface_callbacks
	  (vnm, sw_if_index, flags,
	   vnm->sw_interface_admin_up_down_functions);
      si->flags = old_flags;

      if (error)
	goto done;

      if (si->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
	{
	  vnet_hw_interface_t *hi =
	    vnet_get_hw_interface (vnm, si->hw_if_index);
	  vnet_hw_interface_class_t *hw_class =
	    vnet_get_hw_interface_class (vnm, hi->hw_class_index);
	  vnet_device_class_t *dev_class =
	    vnet_get_device_class (vnm, hi->dev_class_index);

	  if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) &&
	      (si->flags & VNET_SW_INTERFACE_FLAG_ERROR))
	    {
	      error = clib_error_return (0, "Interface in the error state");
	      goto done;
	    }

	  /* save the si admin up flag */
	  old_flags = si->flags;

	  /* update si admin up flag in advance if we are going admin down */
	  if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
	    si->flags &= ~VNET_SW_INTERFACE_FLAG_ADMIN_UP;

	  if (dev_class->admin_up_down_function
	      && (error = dev_class->admin_up_down_function (vnm,
							     si->hw_if_index,
							     flags)))
	    {
	      /* restore si admin up flag to it's original state on errors */
	      si->flags = old_flags;
	      goto done;
	    }

	  if (hw_class->admin_up_down_function
	      && (error = hw_class->admin_up_down_function (vnm,
							    si->hw_if_index,
							    flags)))
	    {
	      /* restore si admin up flag to it's original state on errors */
	      si->flags = old_flags;
	      goto done;
	    }

	  /* Admin down implies link down. */
	  if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
	      && (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
	    vnet_hw_interface_set_flags_helper (vnm, si->hw_if_index,
						hi->flags &
						~VNET_HW_INTERFACE_FLAG_LINK_UP,
						helper_flags);
	}
    }

  si->flags &= ~mask;
  si->flags |= flags;

done:
  return error;
}

clib_error_t *
vnet_hw_interface_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
{
  return vnet_hw_interface_set_flags_helper
    (vnm, hw_if_index, flags,
     VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
}

clib_error_t *
vnet_sw_interface_set_flags (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
{
  return vnet_sw_interface_set_flags_helper
    (vnm, sw_if_index, flags,
     VNET_INTERFACE_SET_FLAGS_HELPER_WANT_REDISTRIBUTE);
}

static u32
vnet_create_sw_interface_no_callbacks (vnet_main_t * vnm,
				       vnet_sw_interface_t * template)
{
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_sw_interface_t *sw;
  u32 sw_if_index;

  pool_get (im->sw_interfaces, sw);
  sw_if_index = sw - im->sw_interfaces;

  sw[0] = template[0];

  sw->flags = 0;
  sw->sw_if_index = sw_if_index;
  if (sw->type == VNET_SW_INTERFACE_TYPE_HARDWARE)
    sw->sup_sw_if_index = sw->sw_if_index;

  /* Allocate counters for this interface. */
  {
    u32 i;

    vnet_interface_counter_lock (im);

    for (i = 0; i < vec_len (im->sw_if_counters); i++)
      {
	vlib_validate_simple_counter (&im->sw_if_counters[i], sw_if_index);
	vlib_zero_simple_counter (&im->sw_if_counters[i], sw_if_index);
      }

    for (i = 0; i < vec_len (im->combined_sw_if_counters); i++)
      {
	vlib_validate_combined_counter (&im->combined_sw_if_counters[i],
					sw_if_index);
	vlib_zero_combined_counter (&im->combined_sw_if_counters[i],
				    sw_if_index);
      }

    vnet_interface_counter_unlock (im);
  }

  return sw_if_index;
}

clib_error_t *
vnet_create_sw_interface (vnet_main_t * vnm, vnet_sw_interface_t * template,
			  u32 * sw_if_index)
{
  clib_error_t *error;
  vnet_hw_interface_t *hi;
  vnet_device_class_t *dev_class;

  hi = vnet_get_sup_hw_interface (vnm, template->sup_sw_if_index);
  dev_class = vnet_get_device_class (vnm, hi->dev_class_index);

  if (template->type == VNET_SW_INTERFACE_TYPE_SUB &&
      dev_class->subif_add_del_function)
    {
      error = dev_class->subif_add_del_function (vnm, hi->hw_if_index,
						 (struct vnet_sw_interface_t
						  *) template, 1);
      if (error)
	return error;
    }

  *sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, template);
  error = vnet_sw_interface_set_flags_helper
    (vnm, *sw_if_index, template->flags,
     VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);

  if (error)
    {
      /* undo the work done by vnet_create_sw_interface_no_callbacks() */
      vnet_interface_main_t *im = &vnm->interface_main;
      vnet_sw_interface_t *sw =
	pool_elt_at_index (im->sw_interfaces, *sw_if_index);
      pool_put (im->sw_interfaces, sw);
    }

  return error;
}

void
vnet_delete_sw_interface (vnet_main_t * vnm, u32 sw_if_index)
{
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_sw_interface_t *sw =
    pool_elt_at_index (im->sw_interfaces, sw_if_index);

  /* Check if the interface has config and is removed from L2 BD or XConnect */
  vlib_main_t *vm = vlib_get_main ();
  l2_input_config_t *config;
  if (sw_if_index < vec_len (l2input_main.configs))
    {
      config = vec_elt_at_index (l2input_main.configs, sw_if_index);
      if (config->xconnect)
	set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0, 0,
			 0, 0);
      if (config->xconnect || config->bridge)
	set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0);
    }

  /* Bring down interface in case it is up. */
  if (sw->flags != 0)
    vnet_sw_interface_set_flags (vnm, sw_if_index, /* flags */ 0);

  call_sw_interface_add_del_callbacks (vnm, sw_if_index, /* is_create */ 0);

  pool_put (im->sw_interfaces, sw);
}

static void
setup_tx_node (vlib_main_t * vm,
	       u32 node_index, vnet_device_class_t * dev_class)
{
  vlib_node_t *n = vlib_get_node (vm, node_index);

  n->function = dev_class->tx_function;
  n->format_trace = dev_class->format_tx_trace;

  vlib_register_errors (vm, node_index,
			dev_class->tx_function_n_errors,
			dev_class->tx_function_error_strings);
}

static void
setup_output_node (vlib_main_t * vm,
		   u32 node_index, vnet_hw_interface_class_t * hw_class)
{
  vlib_node_t *n = vlib_get_node (vm, node_index);
  n->format_buffer = hw_class->format_header;
  n->unformat_buffer = hw_class->unformat_header;
}

/* Register an interface instance. */
u32
vnet_register_interface (vnet_main_t * vnm,
			 u32 dev_class_index,
			 u32 dev_instance,
			 u32 hw_class_index, u32 hw_instance)
{
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_hw_interface_t *hw;
  vnet_device_class_t *dev_class =
    vnet_get_device_class (vnm, dev_class_index);
  vnet_hw_interface_class_t *hw_class =
    vnet_get_hw_interface_class (vnm, hw_class_index);
  vlib_main_t *vm = vnm->vlib_main;
  vnet_feature_config_main_t *fcm;
  vnet_config_main_t *cm;
  u32 hw_index, i;
  char *tx_node_name, *output_node_name;

  pool_get (im->hw_interfaces, hw);

  hw_index = hw - im->hw_interfaces;
  hw->hw_if_index = hw_index;
  hw->default_rx_mode = VNET_HW_INTERFACE_RX_MODE_POLLING;

  if (dev_class->format_device_name)
    hw->name = format (0, "%U", dev_class->format_device_name, dev_instance);
  else if (hw_class->format_interface_name)
    hw->name = format (0, "%U", hw_class->format_interface_name,
		       dev_instance);
  else
    hw->name = format (0, "%s%x", hw_class->name, dev_instance);

  if (!im->hw_interface_by_name)
    im->hw_interface_by_name = hash_create_vec ( /* size */ 0,
						sizeof (hw->name[0]),
						sizeof (uword));

  hash_set_mem (im->hw_interface_by_name, hw->name, hw_index);

  /* Make hardware interface point to software interface. */
  {
    vnet_sw_interface_t sw = {
      .type = VNET_SW_INTERFACE_TYPE_HARDWARE,
      .flood_class = VNET_FLOOD_CLASS_NORMAL,
      .hw_if_index = hw_index
    };
    hw->sw_if_index = vnet_create_sw_interface_no_callbacks (vnm, &sw);
  }

  hw->dev_class_index = dev_class_index;
  hw->dev_instance = dev_instance;
  hw->hw_class_index = hw_class_index;
  hw->hw_instance = hw_instance;

  hw->max_rate_bits_per_sec = 0;
  hw->min_packet_bytes = 0;
  hw->per_packet_overhead_bytes = 0;
  hw->max_l3_packet_bytes[VLIB_RX] = ~0;
  hw->max_l3_packet_bytes[VLIB_TX] = ~0;

  tx_node_name = (char *) format (0, "%v-tx", hw->name);
  output_node_name = (char *) format (0, "%v-output", hw->name);

  /* If we have previously deleted interface nodes, re-use them. */
  if (vec_len (im->deleted_hw_interface_nodes) > 0)
    {
      vnet_hw_interface_nodes_t *hn;
      vlib_node_t *node;
      vlib_node_runtime_t *nrt;

      hn = vec_end (im->deleted_hw_interface_nodes) - 1;

      hw->tx_node_index = hn->tx_node_index;
      hw->output_node_index = hn->output_node_index;

      vlib_node_rename (vm, hw->tx_node_index, "%v", tx_node_name);
      vlib_node_rename (vm, hw->output_node_index, "%v", output_node_name);

      /* *INDENT-OFF* */
      foreach_vlib_main ({
        vnet_interface_output_runtime_t *rt;

	rt = vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);
	ASSERT (rt->is_deleted == 1);
	rt->is_deleted = 0;
	rt->hw_if_index = hw_index;
	rt->sw_if_index = hw->sw_if_index;
	rt->dev_instance = hw->dev_instance;

	rt = vlib_node_get_runtime_data (this_vlib_main, hw->tx_node_index);
	rt->hw_if_index = hw_index;
	rt->sw_if_index = hw->sw_if_index;
	rt->dev_instance = hw->dev_instance;
      });
      /* *INDENT-ON* */

      /* The new class may differ from the old one.
       * Functions have to be updated. */
      node = vlib_get_node (vm, hw->output_node_index);
      node->function = vnet_interface_output_node_multiarch_select ();
      node->format_trace = format_vnet_interface_output_trace;
      /* *INDENT-OFF* */
      foreach_vlib_main ({
        nrt = vlib_node_get_runtime (this_vlib_main, hw->output_node_index);
        nrt->function = node->function;
      });
      /* *INDENT-ON* */

      node = vlib_get_node (vm, hw->tx_node_index);
      node->function = dev_class->tx_function;
      node->format_trace = dev_class->format_tx_trace;
      /* *INDENT-OFF* */
      foreach_vlib_main ({
        nrt = vlib_node_get_runtime (this_vlib_main, hw->tx_node_index);
        nrt->function = node->function;
      });
      /* *INDENT-ON* */

      _vec_len (im->deleted_hw_interface_nodes) -= 1;
    }
  else
    {
      vlib_node_registration_t r;
      vnet_interface_output_runtime_t rt = {
	.hw_if_index = hw_index,
	.sw_if_index = hw->sw_if_index,
	.dev_instance = hw->dev_instance,
	.is_deleted = 0,
      };

      memset (&r, 0, sizeof (r));
      r.type = VLIB_NODE_TYPE_INTERNAL;
      r.runtime_data = &rt;
      r.runtime_data_bytes = sizeof (rt);
      r.scalar_size = 0;
      r.vector_size = sizeof (u32);

      r.flags = VLIB_NODE_FLAG_IS_OUTPUT;
      r.name = tx_node_name;
      r.function = dev_class->tx_function;

      hw->tx_node_index = vlib_register_node (vm, &r);

      vlib_node_add_named_next_with_slot (vm, hw->tx_node_index,
					  "error-drop",
					  VNET_INTERFACE_TX_NEXT_DROP);

      r.flags = 0;
      r.name = output_node_name;
      r.function = vnet_interface_output_node_multiarch_select ();
      r.format_trace = format_vnet_interface_output_trace;

      {
	static char *e[] = {
	  "interface is down",
	  "interface is deleted",
	};

	r.n_errors = ARRAY_LEN (e);
	r.error_strings = e;
      }
      hw->output_node_index = vlib_register_node (vm, &r);

      vlib_node_add_named_next_with_slot (vm, hw->output_node_index,
					  "error-drop",
					  VNET_INTERFACE_OUTPUT_NEXT_DROP);
      vlib_node_add_next_with_slot (vm, hw->output_node_index,
				    hw->tx_node_index,
				    VNET_INTERFACE_OUTPUT_NEXT_TX);

      /* add interface to the list of "output-interface" feature arc start nodes
         and clone nexts from 1st interface if it exists */
      fcm = vnet_feature_get_config_main (im->output_feature_arc_index);
      cm = &fcm->config_main;
      i = vec_len (cm->start_node_indices);
      vec_validate (cm->start_node_indices, i);
      cm->start_node_indices[i] = hw->output_node_index;
      if (hw_index)
	{
	  /* copy nexts from 1st interface */
	  vnet_hw_interface_t *first_hw;
	  vlib_node_t *first_node;

	  first_hw = vnet_get_hw_interface (vnm, /* hw_if_index */ 0);
	  first_node = vlib_get_node (vm, first_hw->output_node_index);

	  /* 1st 2 nexts are already added above */
	  for (i = 2; i < vec_len (first_node->next_nodes); i++)
	    vlib_node_add_next_with_slot (vm, hw->output_node_index,
					  first_node->next_nodes[i], i);
	}
    }

  setup_output_node (vm, hw->output_node_index, hw_class);
  setup_tx_node (vm, hw->tx_node_index, dev_class);

  /* Call all up/down callbacks with zero flags when interface is created. */
  vnet_sw_interface_set_flags_helper (vnm, hw->sw_if_index, /* flags */ 0,
				      VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);
  vnet_hw_interface_set_flags_helper (vnm, hw_index, /* flags */ 0,
				      VNET_INTERFACE_SET_FLAGS_HELPER_IS_CREATE);

  return hw_index;
}

void
vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
{
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  vlib_main_t *vm = vnm->vlib_main;

  /* If it is up, mark it down. */
  if (hw->flags != 0)
    vnet_hw_interface_set_flags (vnm, hw_if_index, /* flags */ 0);

  /* Call delete callbacks. */
  call_hw_interface_add_del_callbacks (vnm, hw_if_index, /* is_create */ 0);

  /* Delete software interface corresponding to hardware interface. */
  vnet_delete_sw_interface (vnm, hw->sw_if_index);

  /* Delete any sub-interfaces. */
  {
    u32 id, sw_if_index;
    /* *INDENT-OFF* */
    hash_foreach (id, sw_if_index, hw->sub_interface_sw_if_index_by_id, ({
      vnet_delete_sw_interface (vnm, sw_if_index);
    }));
    /* *INDENT-ON* */
  }

  {
    vnet_hw_interface_nodes_t *dn;

    /* *INDENT-OFF* */
    foreach_vlib_main ({
      vnet_interface_output_runtime_t *rt =
        vlib_node_get_runtime_data (this_vlib_main, hw->output_node_index);

      /* Mark node runtime as deleted so output node (if called)
       * will drop packets. */
      rt->is_deleted = 1;
    });
    /* *INDENT-ON* */

    vlib_node_rename (vm, hw->output_node_index,
		      "interface-%d-output-deleted", hw_if_index);
    vlib_node_rename (vm, hw->tx_node_index, "interface-%d-tx-deleted",
		      hw_if_index);
    vec_add2 (im->deleted_hw_interface_nodes, dn, 1);
    dn->tx_node_index = hw->tx_node_index;
    dn->output_node_index = hw->output_node_index;
  }

  hash_unset_mem (im->hw_interface_by_name, hw->name);
  vec_free (hw->name);
  vec_free (hw->input_node_thread_index_by_queue);
  vec_free (hw->dq_runtime_index_by_queue);

  pool_put (im->hw_interfaces, hw);
}

void
vnet_hw_interface_walk_sw (vnet_main_t * vnm,
			   u32 hw_if_index,
			   vnet_hw_sw_interface_walk_t fn, void *ctx)
{
  vnet_hw_interface_t *hi;
  u32 id, sw_if_index;

  hi = vnet_get_hw_interface (vnm, hw_if_index);
  /* the super first, then the and sub interfaces */
  fn (vnm, hi->sw_if_index, ctx);

  /* *INDENT-OFF* */
  hash_foreach (id, sw_if_index,
                hi->sub_interface_sw_if_index_by_id,
  ({
    fn (vnm, sw_if_index, ctx);
  }));
  /* *INDENT-ON* */
}

static void
serialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
{
  u32 hw_if_index = va_arg (*va, u32);
  char *hw_class_name = va_arg (*va, char *);
  serialize_integer (m, hw_if_index, sizeof (hw_if_index));
  serialize_cstring (m, hw_class_name);
}

static void
unserialize_vnet_hw_interface_set_class (serialize_main_t * m, va_list * va)
{
  CLIB_UNUSED (mc_main_t * mc) = va_arg (*va, mc_main_t *);
  vnet_main_t *vnm = vnet_get_main ();
  u32 hw_if_index;
  char *hw_class_name;
  uword *p;
  clib_error_t *error;

  unserialize_integer (m, &hw_if_index, sizeof (hw_if_index));
  unserialize_cstring (m, &hw_class_name);
  p =
    hash_get (vnm->interface_main.hw_interface_class_by_name, hw_class_name);
  ASSERT (p != 0);
  error = vnet_hw_interface_set_class_helper (vnm, hw_if_index, p[0],
					      /* redistribute */ 0);
  if (error)
    clib_error_report (error);
}

MC_SERIALIZE_MSG (vnet_hw_interface_set_class_msg, static) =
{
.name = "vnet_hw_interface_set_class",.serialize =
    serialize_vnet_hw_interface_set_class,.unserialize =
    unserialize_vnet_hw_interface_set_class,};

void
vnet_hw_interface_init_for_class (vnet_main_t * vnm, u32 hw_if_index,
				  u32 hw_class_index, u32 hw_instance)
{
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_hw_interface_class_t *hc =
    vnet_get_hw_interface_class (vnm, hw_class_index);

  hi->hw_class_index = hw_class_index;
  hi->hw_instance = hw_instance;
  setup_output_node (vnm->vlib_main, hi->output_node_index, hc);
}

static clib_error_t *
vnet_hw_interface_set_class_helper (vnet_main_t * vnm, u32 hw_if_index,
				    u32 hw_class_index, u32 redistribute)
{
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, hi->sw_if_index);
  vnet_hw_interface_class_t *old_class =
    vnet_get_hw_interface_class (vnm, hi->hw_class_index);
  vnet_hw_interface_class_t *new_class =
    vnet_get_hw_interface_class (vnm, hw_class_index);
  vnet_device_class_t *dev_class =
    vnet_get_device_class (vnm, hi->dev_class_index);
  clib_error_t *error = 0;

  /* New class equals old class?  Nothing to do. */
  if (hi->hw_class_index == hw_class_index)
    return 0;

  /* No need (and incorrect since admin up flag may be set) to do error checking when
     receiving unserialize message. */
  if (redistribute)
    {
      if (si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
	return clib_error_return (0,
				  "%v must be admin down to change class from %s to %s",
				  hi->name, old_class->name, new_class->name);

      /* Make sure interface supports given class. */
      if ((new_class->is_valid_class_for_interface
	   && !new_class->is_valid_class_for_interface (vnm, hw_if_index,
							hw_class_index))
	  || (dev_class->is_valid_class_for_interface
	      && !dev_class->is_valid_class_for_interface (vnm, hw_if_index,
							   hw_class_index)))
	return clib_error_return (0,
				  "%v class cannot be changed from %s to %s",
				  hi->name, old_class->name, new_class->name);

      if (vnm->vlib_main->mc_main)
	{
	  mc_serialize (vnm->vlib_main->mc_main,
			&vnet_hw_interface_set_class_msg, hw_if_index,
			new_class->name);
	  return 0;
	}
    }

  if (old_class->hw_class_change)
    old_class->hw_class_change (vnm, hw_if_index, old_class->index,
				new_class->index);

  vnet_hw_interface_init_for_class (vnm, hw_if_index, new_class->index,
				    /* instance */ ~0);

  if (new_class->hw_class_change)
    new_class->hw_class_change (vnm, hw_if_index, old_class->index,
				new_class->index);

  if (dev_class->hw_class_change)
    dev_class->hw_class_change (vnm, hw_if_index, new_class->index);

  return error;
}

clib_error_t *
vnet_hw_interface_set_class (vnet_main_t * vnm, u32 hw_if_index,
			     u32 hw_class_index)
{
  return vnet_hw_interface_set_class_helper (vnm, hw_if_index, hw_class_index,
					     /* redistribute */ 1);
}

static int
vnet_hw_interface_rx_redirect_to_node_helper (vnet_main_t * vnm,
					      u32 hw_if_index,
					      u32 node_index,
					      u32 redistribute)
{
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_device_class_t *dev_class = vnet_get_device_class
    (vnm, hi->dev_class_index);

  if (redistribute)
    {
      /* $$$$ fixme someday maybe */
      ASSERT (vnm->vlib_main->mc_main == 0);
    }
  if (dev_class->rx_redirect_to_node)
    {
      dev_class->rx_redirect_to_node (vnm, hw_if_index, node_index);
      return 0;
    }

  return VNET_API_ERROR_UNIMPLEMENTED;
}

int
vnet_hw_interface_rx_redirect_to_node (vnet_main_t * vnm, u32 hw_if_index,
				       u32 node_index)
{
  return vnet_hw_interface_rx_redirect_to_node_helper (vnm, hw_if_index,
						       node_index,
						       1 /* redistribute */ );
}

word
vnet_sw_interface_compare (vnet_main_t * vnm,
			   uword sw_if_index0, uword sw_if_index1)
{
  vnet_sw_interface_t *sup0 = vnet_get_sup_sw_interface (vnm, sw_if_index0);
  vnet_sw_interface_t *sup1 = vnet_get_sup_sw_interface (vnm, sw_if_index1);
  vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, sup0->hw_if_index);
  vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, sup1->hw_if_index);

  if (h0 != h1)
    return vec_cmp (h0->name, h1->name);
  return (word) h0->hw_instance - (word) h1->hw_instance;
}

word
vnet_hw_interface_compare (vnet_main_t * vnm,
			   uword hw_if_index0, uword hw_if_index1)
{
  vnet_hw_interface_t *h0 = vnet_get_hw_interface (vnm, hw_if_index0);
  vnet_hw_interface_t *h1 = vnet_get_hw_interface (vnm, hw_if_index1);

  if (h0 != h1)
    return vec_cmp (h0->name, h1->name);
  return (word) h0->hw_instance - (word) h1->hw_instance;
}

int
vnet_sw_interface_is_p2p (vnet_main_t * vnm, u32 sw_if_index)
{
  vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
    return 1;

  vnet_hw_interface_t *hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
  vnet_hw_interface_class_t *hc =
    vnet_get_hw_interface_class (vnm, hw->hw_class_index);

  return (hc->flags & VNET_HW_INTERFACE_CLASS_FLAG_P2P);
}

clib_error_t *
vnet_interface_init (vlib_main_t * vm)
{
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  vlib_buffer_t *b = 0;
  vnet_buffer_opaque_t *o = 0;
  clib_error_t *error;

  /*
   * Keep people from shooting themselves in the foot.
   */
  if (sizeof (b->opaque) != sizeof (vnet_buffer_opaque_t))
    {
#define _(a) if (sizeof(o->a) > sizeof (o->unused))                     \
      clib_warning                                                      \
        ("FATAL: size of opaque union subtype %s is %d (max %d)",       \
         #a, sizeof(o->a), sizeof (o->unused));
      foreach_buffer_opaque_union_subtype;
#undef _

      return clib_error_return
	(0, "FATAL: size of vlib buffer opaque %d, size of vnet opaque %d",
	 sizeof (b->opaque), sizeof (vnet_buffer_opaque_t));
    }

  im->sw_if_counter_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
						   CLIB_CACHE_LINE_BYTES);
  im->sw_if_counter_lock[0] = 1;	/* should be no need */

  vec_validate (im->sw_if_counters, VNET_N_SIMPLE_INTERFACE_COUNTER - 1);
  im->sw_if_counters[VNET_INTERFACE_COUNTER_DROP].name = "drops";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_PUNT].name = "punts";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_IP4].name = "ip4";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_IP6].name = "ip6";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_NO_BUF].name = "rx-no-buf";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_MISS].name = "rx-miss";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_RX_ERROR].name = "rx-error";
  im->sw_if_counters[VNET_INTERFACE_COUNTER_TX_ERROR].name = "tx-error";

  vec_validate (im->combined_sw_if_counters,
		VNET_N_COMBINED_INTERFACE_COUNTER - 1);
  im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_RX].name = "rx";
  im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX].name = "tx";

  im->sw_if_counter_lock[0] = 0;

  im->device_class_by_name = hash_create_string ( /* size */ 0,
						 sizeof (uword));
  {
    vnet_device_class_t *c;

    c = vnm->device_class_registrations;

    while (c)
      {
	c->index = vec_len (im->device_classes);
	hash_set_mem (im->device_class_by_name, c->name, c->index);
	vec_add1 (im->device_classes, c[0]);
	c = c->next_class_registration;
      }
  }

  im->hw_interface_class_by_name = hash_create_string ( /* size */ 0,
						       sizeof (uword));

  im->sw_if_index_by_sup_and_sub = hash_create_mem (0, sizeof (u64),
						    sizeof (uword));
  {
    vnet_hw_interface_class_t *c;

    c = vnm->hw_interface_class_registrations;

    while (c)
      {
	c->index = vec_len (im->hw_interface_classes);
	hash_set_mem (im->hw_interface_class_by_name, c->name, c->index);

	if (NULL == c->build_rewrite)
	  c->build_rewrite = default_build_rewrite;
	if (NULL == c->update_adjacency)
	  c->update_adjacency = default_update_adjacency;

	vec_add1 (im->hw_interface_classes, c[0]);
	c = c->next_class_registration;
      }
  }

  if ((error = vlib_call_init_function (vm, vnet_interface_cli_init)))
    return error;

  vnm->interface_tag_by_sw_if_index = hash_create (0, sizeof (uword));

#if VLIB_BUFFER_TRACE_TRAJECTORY > 0
  if ((error = vlib_call_init_function (vm, trajectory_trace_init)))
    return error;
#endif

  return 0;
}

VLIB_INIT_FUNCTION (vnet_interface_init);

/* Kludge to renumber interface names [only!] */
int
vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance)
{
  int rv;
  vnet_main_t *vnm = vnet_get_main ();
  vnet_interface_main_t *im = &vnm->interface_main;
  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);

  vnet_device_class_t *dev_class = vnet_get_device_class
    (vnm, hi->dev_class_index);

  if (dev_class->name_renumber == 0 || dev_class->format_device_name == 0)
    return VNET_API_ERROR_UNIMPLEMENTED;

  rv = dev_class->name_renumber (hi, new_show_dev_instance);

  if (rv)
    return rv;

  hash_unset_mem (im->hw_interface_by_name, hi->name);
  vec_free (hi->name);
  /* Use the mapping we set up to call it Ishmael */
  hi->name = format (0, "%U", dev_class->format_device_name,
		     hi->dev_instance);

  hash_set_mem (im->hw_interface_by_name, hi->name, hi->hw_if_index);
  return rv;
}

clib_error_t *
vnet_rename_interface (vnet_main_t * vnm, u32 hw_if_index, char *new_name)
{
  vnet_interface_main_t *im = &vnm->interface_main;
  vlib_main_t *vm = vnm->vlib_main;
  vnet_hw_interface_t *hw;
  u8 *old_name;
  clib_error_t *error = 0;

  hw = vnet_get_hw_interface (vnm, hw_if_index);
  if (!hw)
    {
      return clib_error_return (0,
				"unable to find hw interface for index %u",
				hw_if_index);
    }

  old_name = hw->name;

  /* set new hw->name */
  hw->name = format (0, "%s", new_name);

  /* remove the old name to hw_if_index mapping and install the new one */
  hash_unset_mem (im->hw_interface_by_name, old_name);
  hash_set_mem (im->hw_interface_by_name, hw->name, hw_if_index);

  /* rename tx/output nodes */
  vlib_node_rename (vm, hw->tx_node_index, "%v-tx", hw->name);
  vlib_node_rename (vm, hw->output_node_index, "%v-output", hw->name);

  /* free the old name vector */
  vec_free (old_name);

  return error;
}

static clib_error_t *
vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
					     u32 hw_if_index,
					     u8 * mac_address)
{
  clib_error_t *error = 0;
  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);

  if (hi->hw_address)
    {
      vnet_device_class_t *dev_class =
	vnet_get_device_class (vnm, hi->dev_class_index);
      if (dev_class->mac_addr_change_function)
	{
	  error =
	    dev_class->mac_addr_change_function (hi, (char *) mac_address);
	}
      if (!error)
	{
	  vnet_hw_interface_class_t *hw_class;

	  hw_class = vnet_get_hw_interface_class (vnm, hi->hw_class_index);

	  if (NULL != hw_class->mac_addr_change_function)
	    hw_class->mac_addr_change_function (hi, (char *) mac_address);
	}
      else
	{
	  error =
	    clib_error_return (0,
			       "MAC Address Change is not supported on this interface");
	}
    }
  else
    {
      error =
	clib_error_return (0,
			   "mac address change is not supported for interface index %u",
			   hw_if_index);
    }
  return error;
}

clib_error_t *
vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
				      u8 * mac_address)
{
  return vnet_hw_interface_change_mac_address_helper
    (vnm, hw_if_index, mac_address);
}

vnet_l3_packet_type_t
vnet_link_to_l3_proto (vnet_link_t link)
{
  switch (link)
    {
    case VNET_LINK_IP4:
      return (VNET_L3_PACKET_TYPE_IP4);
    case VNET_LINK_IP6:
      return (VNET_L3_PACKET_TYPE_IP6);
    case VNET_LINK_MPLS:
      return (VNET_L3_PACKET_TYPE_MPLS);
    case VNET_LINK_ARP:
      return (VNET_L3_PACKET_TYPE_ARP);
    case VNET_LINK_ETHERNET:
    case VNET_LINK_NSH:
      ASSERT (0);
      break;
    }
  ASSERT (0);
  return (0);
}

u8 *
default_build_rewrite (vnet_main_t * vnm,
		       u32 sw_if_index,
		       vnet_link_t link_type, const void *dst_address)
{
  return (NULL);
}

void
default_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
{
  ip_adjacency_t *adj;

  adj = adj_get (ai);

  switch (adj->lookup_next_index)
    {
    case IP_LOOKUP_NEXT_ARP:
    case IP_LOOKUP_NEXT_GLEAN:
      /*
       * default rewirte in neighbour adj
       */
      adj_nbr_update_rewrite
	(ai,
	 ADJ_NBR_REWRITE_FLAG_COMPLETE,
	 vnet_build_rewrite_for_sw_interface (vnm,
					      sw_if_index,
					      adj_get_link_type (ai), NULL));
      break;
    case IP_LOOKUP_NEXT_MCAST:
      /*
       * mcast traffic also uses default rewrite string with no mcast
       * switch time updates.
       */
      adj_mcast_update_rewrite
	(ai,
	 vnet_build_rewrite_for_sw_interface (vnm,
					      sw_if_index,
					      adj_get_link_type (ai),
					      NULL), 0, 0);
      break;
    case IP_LOOKUP_NEXT_DROP:
    case IP_LOOKUP_NEXT_PUNT:
    case IP_LOOKUP_NEXT_LOCAL:
    case IP_LOOKUP_NEXT_REWRITE:
    case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
    case IP_LOOKUP_NEXT_MIDCHAIN:
    case IP_LOOKUP_NEXT_ICMP_ERROR:
    case IP_LOOKUP_N_NEXT:
      ASSERT (0);
      break;
    }
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */