samples/bpf: remove the bpf tunnel testsuite.

Move the testsuite to
selftests/bpf/{test_tunnel_kern.c, test_tunnel.sh}

Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

3 files changed, 0 insertions, 1003 deletions

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index aa8c392e2e522..b853581592fd5 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -114,7 +114,6 @@ always += sock_flags_kern.o
 always += test_probe_write_user_kern.o
 always += trace_output_kern.o
 always += tcbpf1_kern.o
-always += tcbpf2_kern.o
 always += tc_l2_redirect_kern.o
 always += lathist_kern.o
 always += offwaketime_kern.o
diff --git a/samples/bpf/tcbpf2_kern.c b/samples/bpf/tcbpf2_kern.c
deleted file mode 100644
index fa260c750fb1b..0000000000000
--- a/samples/bpf/tcbpf2_kern.c
+++ /dev/null
@@ -1,612 +0,0 @@
-/* Copyright (c) 2016 VMware
- * Copyright (c) 2016 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#define KBUILD_MODNAME "foo"
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/if_ether.h>
-#include <uapi/linux/if_packet.h>
-#include <uapi/linux/ip.h>
-#include <uapi/linux/ipv6.h>
-#include <uapi/linux/in.h>
-#include <uapi/linux/tcp.h>
-#include <uapi/linux/filter.h>
-#include <uapi/linux/pkt_cls.h>
-#include <uapi/linux/erspan.h>
-#include <net/ipv6.h>
-#include "bpf_helpers.h"
-#include "bpf_endian.h"
-
-#define _htonl __builtin_bswap32
-#define ERROR(ret) do {\
-		char fmt[] = "ERROR line:%d ret:%d\n";\
-		bpf_trace_printk(fmt, sizeof(fmt), __LINE__, ret); \
-	} while(0)
-
-struct geneve_opt {
-	__be16	opt_class;
-	u8	type;
-	u8	length:5;
-	u8	r3:1;
-	u8	r2:1;
-	u8	r1:1;
-	u8	opt_data[8]; /* hard-coded to 8 byte */
-};
-
-struct vxlan_metadata {
-	u32     gbp;
-};
-
-SEC("gre_set_tunnel")
-int _gre_set_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
-				     BPF_F_ZERO_CSUM_TX | BPF_F_SEQ_NUMBER);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("gre_get_tunnel")
-int _gre_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	char fmt[] = "key %d remote ip 0x%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt), key.tunnel_id, key.remote_ipv4);
-	return TC_ACT_OK;
-}
-
-SEC("ip6gretap_set_tunnel")
-int _ip6gretap_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key;
-	int ret;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv6[3] = _htonl(0x11); /* ::11 */
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-	key.tunnel_label = 0xabcde;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
-				     BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX |
-				     BPF_F_SEQ_NUMBER);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("ip6gretap_get_tunnel")
-int _ip6gretap_get_tunnel(struct __sk_buff *skb)
-{
-	char fmt[] = "key %d remote ip6 ::%x label %x\n";
-	struct bpf_tunnel_key key;
-	int ret;
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
-				     BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt),
-			 key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
-
-	return TC_ACT_OK;
-}
-
-SEC("erspan_set_tunnel")
-int _erspan_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key;
-	struct erspan_metadata md;
-	int ret;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	__builtin_memset(&md, 0, sizeof(md));
-#ifdef ERSPAN_V1
-	md.version = 1;
-	md.u.index = bpf_htonl(123);
-#else
-	u8 direction = 1;
-	u8 hwid = 7;
-
-	md.version = 2;
-	md.u.md2.dir = direction;
-	md.u.md2.hwid = hwid & 0xf;
-	md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
-#endif
-
-	ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("erspan_get_tunnel")
-int _erspan_get_tunnel(struct __sk_buff *skb)
-{
-	char fmt[] = "key %d remote ip 0x%x erspan version %d\n";
-	struct bpf_tunnel_key key;
-	struct erspan_metadata md;
-	u32 index;
-	int ret;
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt),
-			key.tunnel_id, key.remote_ipv4, md.version);
-
-#ifdef ERSPAN_V1
-	char fmt2[] = "\tindex %x\n";
-
-	index = bpf_ntohl(md.u.index);
-	bpf_trace_printk(fmt2, sizeof(fmt2), index);
-#else
-	char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
-
-	bpf_trace_printk(fmt2, sizeof(fmt2),
-			 md.u.md2.dir,
-			 (md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
-			 bpf_ntohl(md.u.md2.timestamp));
-#endif
-
-	return TC_ACT_OK;
-}
-
-SEC("ip4ip6erspan_set_tunnel")
-int _ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key;
-	struct erspan_metadata md;
-	int ret;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv6[3] = _htonl(0x11);
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
-				     BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	__builtin_memset(&md, 0, sizeof(md));
-
-#ifdef ERSPAN_V1
-	md.u.index = htonl(123);
-	md.version = 1;
-#else
-	u8 direction = 0;
-	u8 hwid = 17;
-
-	md.version = 2;
-	md.u.md2.dir = direction;
-	md.u.md2.hwid = hwid & 0xf;
-	md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
-#endif
-
-	ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("ip4ip6erspan_get_tunnel")
-int _ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
-{
-	char fmt[] = "ip6erspan get key %d remote ip6 ::%x erspan version %d\n";
-	struct bpf_tunnel_key key;
-	struct erspan_metadata md;
-	u32 index;
-	int ret;
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt),
-			key.tunnel_id, key.remote_ipv4, md.version);
-
-#ifdef ERSPAN_V1
-	char fmt2[] = "\tindex %x\n";
-
-	index = bpf_ntohl(md.u.index);
-	bpf_trace_printk(fmt2, sizeof(fmt2), index);
-#else
-	char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
-
-	bpf_trace_printk(fmt2, sizeof(fmt2),
-			 md.u.md2.dir,
-			 (md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
-			 bpf_ntohl(md.u.md2.timestamp));
-#endif
-
-	return TC_ACT_OK;
-}
-
-SEC("vxlan_set_tunnel")
-int _vxlan_set_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	struct vxlan_metadata md;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	md.gbp = 0x800FF; /* Set VXLAN Group Policy extension */
-	ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("vxlan_get_tunnel")
-int _vxlan_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	struct vxlan_metadata md;
-	char fmt[] = "key %d remote ip 0x%x vxlan gbp 0x%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt),
-			key.tunnel_id, key.remote_ipv4, md.gbp);
-
-	return TC_ACT_OK;
-}
-
-SEC("geneve_set_tunnel")
-int _geneve_set_tunnel(struct __sk_buff *skb)
-{
-	int ret, ret2;
-	struct bpf_tunnel_key key;
-	struct geneve_opt gopt;
-
-	__builtin_memset(&key, 0x0, sizeof(key));
-	key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-	key.tunnel_id = 2;
-	key.tunnel_tos = 0;
-	key.tunnel_ttl = 64;
-
-	__builtin_memset(&gopt, 0x0, sizeof(gopt));
-	gopt.opt_class = 0x102; /* Open Virtual Networking (OVN) */
-	gopt.type = 0x08;
-	gopt.r1 = 0;
-	gopt.r2 = 0;
-	gopt.r3 = 0;
-	gopt.length = 2; /* 4-byte multiple */
-	*(int *) &gopt.opt_data = 0xdeadbeef;
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("geneve_get_tunnel")
-int _geneve_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	struct geneve_opt gopt;
-	char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_get_tunnel_opt(skb, &gopt, sizeof(gopt));
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt),
-			key.tunnel_id, key.remote_ipv4, gopt.opt_class);
-	return TC_ACT_OK;
-}
-
-SEC("ipip_set_tunnel")
-int _ipip_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key = {};
-	void *data = (void *)(long)skb->data;
-	struct iphdr *iph = data;
-	struct tcphdr *tcp = data + sizeof(*iph);
-	void *data_end = (void *)(long)skb->data_end;
-	int ret;
-
-	/* single length check */
-	if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
-		ERROR(1);
-		return TC_ACT_SHOT;
-	}
-
-	key.tunnel_ttl = 64;
-	if (iph->protocol == IPPROTO_ICMP) {
-		key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-	} else {
-		if (iph->protocol != IPPROTO_TCP || iph->ihl != 5)
-			return TC_ACT_SHOT;
-
-		if (tcp->dest == htons(5200))
-			key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
-		else if (tcp->dest == htons(5201))
-			key.remote_ipv4 = 0xac100165; /* 172.16.1.101 */
-		else
-			return TC_ACT_SHOT;
-	}
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("ipip_get_tunnel")
-int _ipip_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	char fmt[] = "remote ip 0x%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt), key.remote_ipv4);
-	return TC_ACT_OK;
-}
-
-SEC("ipip6_set_tunnel")
-int _ipip6_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key = {};
-	void *data = (void *)(long)skb->data;
-	struct iphdr *iph = data;
-	struct tcphdr *tcp = data + sizeof(*iph);
-	void *data_end = (void *)(long)skb->data_end;
-	int ret;
-
-	/* single length check */
-	if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
-		ERROR(1);
-		return TC_ACT_SHOT;
-	}
-
-	key.remote_ipv6[0] = _htonl(0x2401db00);
-	key.tunnel_ttl = 64;
-
-	if (iph->protocol == IPPROTO_ICMP) {
-		key.remote_ipv6[3] = _htonl(1);
-	} else {
-		if (iph->protocol != IPPROTO_TCP || iph->ihl != 5) {
-			ERROR(iph->protocol);
-			return TC_ACT_SHOT;
-		}
-
-		if (tcp->dest == htons(5200)) {
-			key.remote_ipv6[3] = _htonl(1);
-		} else if (tcp->dest == htons(5201)) {
-			key.remote_ipv6[3] = _htonl(2);
-		} else {
-			ERROR(tcp->dest);
-			return TC_ACT_SHOT;
-		}
-	}
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("ipip6_get_tunnel")
-int _ipip6_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	char fmt[] = "remote ip6 %x::%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt), _htonl(key.remote_ipv6[0]),
-			 _htonl(key.remote_ipv6[3]));
-	return TC_ACT_OK;
-}
-
-SEC("ip6ip6_set_tunnel")
-int _ip6ip6_set_tunnel(struct __sk_buff *skb)
-{
-	struct bpf_tunnel_key key = {};
-	void *data = (void *)(long)skb->data;
-	struct ipv6hdr *iph = data;
-	struct tcphdr *tcp = data + sizeof(*iph);
-	void *data_end = (void *)(long)skb->data_end;
-	int ret;
-
-	/* single length check */
-	if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
-		ERROR(1);
-		return TC_ACT_SHOT;
-	}
-
-	key.remote_ipv6[0] = _htonl(0x2401db00);
-	key.tunnel_ttl = 64;
-
-	if (iph->nexthdr == NEXTHDR_ICMP) {
-		key.remote_ipv6[3] = _htonl(1);
-	} else {
-		if (iph->nexthdr != NEXTHDR_TCP) {
-			ERROR(iph->nexthdr);
-			return TC_ACT_SHOT;
-		}
-
-		if (tcp->dest == htons(5200)) {
-			key.remote_ipv6[3] = _htonl(1);
-		} else if (tcp->dest == htons(5201)) {
-			key.remote_ipv6[3] = _htonl(2);
-		} else {
-			ERROR(tcp->dest);
-			return TC_ACT_SHOT;
-		}
-	}
-
-	ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	return TC_ACT_OK;
-}
-
-SEC("ip6ip6_get_tunnel")
-int _ip6ip6_get_tunnel(struct __sk_buff *skb)
-{
-	int ret;
-	struct bpf_tunnel_key key;
-	char fmt[] = "remote ip6 %x::%x\n";
-
-	ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
-	if (ret < 0) {
-		ERROR(ret);
-		return TC_ACT_SHOT;
-	}
-
-	bpf_trace_printk(fmt, sizeof(fmt), _htonl(key.remote_ipv6[0]),
-			 _htonl(key.remote_ipv6[3]));
-	return TC_ACT_OK;
-}
-
-SEC("xfrm_get_state")
-int _xfrm_get_state(struct __sk_buff *skb)
-{
-	struct bpf_xfrm_state x;
-	char fmt[] = "reqid %d spi 0x%x remote ip 0x%x\n";
-	int ret;
-
-	ret = bpf_skb_get_xfrm_state(skb, 0, &x, sizeof(x), 0);
-	if (ret < 0)
-		return TC_ACT_OK;
-
-	bpf_trace_printk(fmt, sizeof(fmt), x.reqid, bpf_ntohl(x.spi),
-			 bpf_ntohl(x.remote_ipv4));
-	return TC_ACT_OK;
-}
-
-char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/test_tunnel_bpf.sh b/samples/bpf/test_tunnel_bpf.sh
deleted file mode 100755
index 9c534dc07b36f..0000000000000
--- a/samples/bpf/test_tunnel_bpf.sh
+++ /dev/null
@@ -1,390 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-# In Namespace 0 (at_ns0) using native tunnel
-# Overlay IP: 10.1.1.100
-# local 192.16.1.100 remote 192.16.1.200
-# veth0 IP: 172.16.1.100, tunnel dev <type>00
-
-# Out of Namespace using BPF set/get on lwtunnel
-# Overlay IP: 10.1.1.200
-# local 172.16.1.200 remote 172.16.1.100
-# veth1 IP: 172.16.1.200, tunnel dev <type>11
-
-function config_device {
-	ip netns add at_ns0
-	ip link add veth0 type veth peer name veth1
-	ip link set veth0 netns at_ns0
-	ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
-	ip netns exec at_ns0 ip link set dev veth0 up
-	ip link set dev veth1 up mtu 1500
-	ip addr add dev veth1 172.16.1.200/24
-}
-
-function add_gre_tunnel {
-	# in namespace
-	ip netns exec at_ns0 \
-        ip link add dev $DEV_NS type $TYPE seq key 2 \
-		local 172.16.1.100 remote 172.16.1.200
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE key 2 external
-	ip link set dev $DEV up
-	ip addr add dev $DEV 10.1.1.200/24
-}
-
-function add_ip6gretap_tunnel {
-
-	# assign ipv6 address
-	ip netns exec at_ns0 ip addr add ::11/96 dev veth0
-	ip netns exec at_ns0 ip link set dev veth0 up
-	ip addr add dev veth1 ::22/96
-	ip link set dev veth1 up
-
-	# in namespace
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE seq flowlabel 0xbcdef key 2 \
-		local ::11 remote ::22
-
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-	ip netns exec at_ns0 ip addr add dev $DEV_NS fc80::100/96
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE external
-	ip addr add dev $DEV 10.1.1.200/24
-	ip addr add dev $DEV fc80::200/24
-	ip link set dev $DEV up
-}
-
-function add_erspan_tunnel {
-	# in namespace
-	if [ "$1" == "v1" ]; then
-		ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE seq key 2 \
-		local 172.16.1.100 remote 172.16.1.200 \
-		erspan_ver 1 erspan 123
-	else
-		ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE seq key 2 \
-		local 172.16.1.100 remote 172.16.1.200 \
-		erspan_ver 2 erspan_dir egress erspan_hwid 3
-	fi
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE external
-	ip link set dev $DEV up
-	ip addr add dev $DEV 10.1.1.200/24
-}
-
-function add_ip6erspan_tunnel {
-
-	# assign ipv6 address
-	ip netns exec at_ns0 ip addr add ::11/96 dev veth0
-	ip netns exec at_ns0 ip link set dev veth0 up
-	ip addr add dev veth1 ::22/96
-	ip link set dev veth1 up
-
-	# in namespace
-	if [ "$1" == "v1" ]; then
-		ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE seq key 2 \
-		local ::11 remote ::22 \
-		erspan_ver 1 erspan 123
-	else
-		ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE seq key 2 \
-		local ::11 remote ::22 \
-		erspan_ver 2 erspan_dir egress erspan_hwid 7
-	fi
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE external
-	ip addr add dev $DEV 10.1.1.200/24
-	ip link set dev $DEV up
-}
-
-function add_vxlan_tunnel {
-	# Set static ARP entry here because iptables set-mark works
-	# on L3 packet, as a result not applying to ARP packets,
-	# causing errors at get_tunnel_{key/opt}.
-
-	# in namespace
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE id 2 dstport 4789 gbp remote 172.16.1.200
-	ip netns exec at_ns0 ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-	ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
-	ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE external gbp dstport 4789
-	ip link set dev $DEV address 52:54:00:d9:02:00 up
-	ip addr add dev $DEV 10.1.1.200/24
-	arp -s 10.1.1.100 52:54:00:d9:01:00
-}
-
-function add_geneve_tunnel {
-	# in namespace
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE id 2 dstport 6081 remote 172.16.1.200
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE dstport 6081 external
-	ip link set dev $DEV up
-	ip addr add dev $DEV 10.1.1.200/24
-}
-
-function add_ipip_tunnel {
-	# in namespace
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type $TYPE local 172.16.1.100 remote 172.16.1.200
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	# out of namespace
-	ip link add dev $DEV type $TYPE external
-	ip link set dev $DEV up
-	ip addr add dev $DEV 10.1.1.200/24
-}
-
-function setup_xfrm_tunnel {
-	auth=0x$(printf '1%.0s' {1..40})
-	enc=0x$(printf '2%.0s' {1..32})
-	spi_in_to_out=0x1
-	spi_out_to_in=0x2
-	# in namespace
-	# in -> out
-	ip netns exec at_ns0 \
-		ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
-			spi $spi_in_to_out reqid 1 mode tunnel \
-			auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
-	ip netns exec at_ns0 \
-		ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir out \
-		tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
-		mode tunnel
-	# out -> in
-	ip netns exec at_ns0 \
-		ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
-			spi $spi_out_to_in reqid 2 mode tunnel \
-			auth-trunc 'hmac(sha1)' $auth 96 enc 'cbc(aes)' $enc
-	ip netns exec at_ns0 \
-		ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir in \
-		tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
-		mode tunnel
-	# address & route
-	ip netns exec at_ns0 \
-		ip addr add dev veth0 10.1.1.100/32
-	ip netns exec at_ns0 \
-		ip route add 10.1.1.200 dev veth0 via 172.16.1.200 \
-			src 10.1.1.100
-
-	# out of namespace
-	# in -> out
-	ip xfrm state add src 172.16.1.100 dst 172.16.1.200 proto esp \
-		spi $spi_in_to_out reqid 1 mode tunnel \
-		auth-trunc 'hmac(sha1)' $auth 96  enc 'cbc(aes)' $enc
-	ip xfrm policy add src 10.1.1.100/32 dst 10.1.1.200/32 dir in \
-		tmpl src 172.16.1.100 dst 172.16.1.200 proto esp reqid 1 \
-		mode tunnel
-	# out -> in
-	ip xfrm state add src 172.16.1.200 dst 172.16.1.100 proto esp \
-		spi $spi_out_to_in reqid 2 mode tunnel \
-		auth-trunc 'hmac(sha1)' $auth 96  enc 'cbc(aes)' $enc
-	ip xfrm policy add src 10.1.1.200/32 dst 10.1.1.100/32 dir out \
-		tmpl src 172.16.1.200 dst 172.16.1.100 proto esp reqid 2 \
-		mode tunnel
-	# address & route
-	ip addr add dev veth1 10.1.1.200/32
-	ip route add 10.1.1.100 dev veth1 via 172.16.1.100 src 10.1.1.200
-}
-
-function attach_bpf {
-	DEV=$1
-	SET_TUNNEL=$2
-	GET_TUNNEL=$3
-	tc qdisc add dev $DEV clsact
-	tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
-	tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
-}
-
-function test_gre {
-	TYPE=gretap
-	DEV_NS=gretap00
-	DEV=gretap11
-	config_device
-	add_gre_tunnel
-	attach_bpf $DEV gre_set_tunnel gre_get_tunnel
-	ping -c 1 10.1.1.100
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	cleanup
-}
-
-function test_ip6gre {
-	TYPE=ip6gre
-	DEV_NS=ip6gre00
-	DEV=ip6gre11
-	config_device
-	# reuse the ip6gretap function
-	add_ip6gretap_tunnel
-	attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
-	# underlay
-	ping6 -c 4 ::11
-	# overlay: ipv4 over ipv6
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	ping -c 1 10.1.1.100
-	# overlay: ipv6 over ipv6
-	ip netns exec at_ns0 ping6 -c 1 fc80::200
-	cleanup
-}
-
-function test_ip6gretap {
-	TYPE=ip6gretap
-	DEV_NS=ip6gretap00
-	DEV=ip6gretap11
-	config_device
-	add_ip6gretap_tunnel
-	attach_bpf $DEV ip6gretap_set_tunnel ip6gretap_get_tunnel
-	# underlay
-	ping6 -c 4 ::11
-	# overlay: ipv4 over ipv6
-	ip netns exec at_ns0 ping -i .2 -c 1 10.1.1.200
-	ping -c 1 10.1.1.100
-	# overlay: ipv6 over ipv6
-	ip netns exec at_ns0 ping6 -c 1 fc80::200
-	cleanup
-}
-
-function test_erspan {
-	TYPE=erspan
-	DEV_NS=erspan00
-	DEV=erspan11
-	config_device
-	add_erspan_tunnel $1
-	attach_bpf $DEV erspan_set_tunnel erspan_get_tunnel
-	ping -c 1 10.1.1.100
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	cleanup
-}
-
-function test_ip6erspan {
-	TYPE=ip6erspan
-	DEV_NS=ip6erspan00
-	DEV=ip6erspan11
-	config_device
-	add_ip6erspan_tunnel $1
-	attach_bpf $DEV ip4ip6erspan_set_tunnel ip4ip6erspan_get_tunnel
-	ping6 -c 3 ::11
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	cleanup
-}
-
-function test_vxlan {
-	TYPE=vxlan
-	DEV_NS=vxlan00
-	DEV=vxlan11
-	config_device
-	add_vxlan_tunnel
-	attach_bpf $DEV vxlan_set_tunnel vxlan_get_tunnel
-	ping -c 1 10.1.1.100
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	cleanup
-}
-
-function test_geneve {
-	TYPE=geneve
-	DEV_NS=geneve00
-	DEV=geneve11
-	config_device
-	add_geneve_tunnel
-	attach_bpf $DEV geneve_set_tunnel geneve_get_tunnel
-	ping -c 1 10.1.1.100
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	cleanup
-}
-
-function test_ipip {
-	TYPE=ipip
-	DEV_NS=ipip00
-	DEV=ipip11
-	config_device
-	tcpdump -nei veth1 &
-	cat /sys/kernel/debug/tracing/trace_pipe &
-	add_ipip_tunnel
-	ethtool -K veth1 gso off gro off rx off tx off
-	ip link set dev veth1 mtu 1500
-	attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
-	ping -c 1 10.1.1.100
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
-	sleep 0.2
-	iperf -c 10.1.1.100 -n 5k -p 5200
-	cleanup
-}
-
-function test_xfrm_tunnel {
-	config_device
-        tcpdump -nei veth1 ip &
-	output=$(mktemp)
-	cat /sys/kernel/debug/tracing/trace_pipe | tee $output &
-        setup_xfrm_tunnel
-	tc qdisc add dev veth1 clsact
-	tc filter add dev veth1 proto ip ingress bpf da obj tcbpf2_kern.o \
-		sec xfrm_get_state
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	grep "reqid 1" $output
-	grep "spi 0x1" $output
-	grep "remote ip 0xac100164" $output
-	cleanup
-}
-
-function cleanup {
-	set +ex
-	pkill iperf
-	ip netns delete at_ns0
-	ip link del veth1
-	ip link del ipip11
-	ip link del gretap11
-	ip link del ip6gre11
-	ip link del ip6gretap11
-	ip link del vxlan11
-	ip link del geneve11
-	ip link del erspan11
-	ip link del ip6erspan11
-	ip x s flush
-	ip x p flush
-	pkill tcpdump
-	pkill cat
-	set -ex
-}
-
-trap cleanup 0 2 3 6 9
-cleanup
-echo "Testing GRE tunnel..."
-test_gre
-echo "Testing IP6GRE tunnel..."
-test_ip6gre
-echo "Testing IP6GRETAP tunnel..."
-test_ip6gretap
-echo "Testing ERSPAN tunnel..."
-test_erspan v1
-test_erspan v2
-echo "Testing IP6ERSPAN tunnel..."
-test_ip6erspan v1
-test_ip6erspan v2
-echo "Testing VXLAN tunnel..."
-test_vxlan
-echo "Testing GENEVE tunnel..."
-test_geneve
-echo "Testing IPIP tunnel..."
-test_ipip
-echo "Testing IPSec tunnel..."
-test_xfrm_tunnel
-echo "*** PASS ***"