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Commit 56ddd302 authored by William Tu's avatar William Tu Committed by David S. Miller
Browse files

samples/bpf: extend test_tunnel_bpf.sh with ip6gre 



Extend existing tests for vxlan, gre, geneve, ipip, erspan,
to include ip6 gre and gretap tunnel.

Signed-off-by: default avatarWilliam Tu <u9012063@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b8da518c

samples/bpf/tcbpf2_kern.c

+43 −0
Original line number Diff line number Diff line
@@ -81,6 +81,49 @@ int _gre_get_tunnel(struct __sk_buff *skb) 
	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);

	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)

{

samples/bpf/test_tunnel_bpf.sh

+65 −0
Original line number Diff line number Diff line
@@ -33,6 +33,30 @@ function add_gre_tunnel { 
	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 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

	ip netns exec at_ns0 \
@@ -113,6 +137,41 @@ function test_gre { 
	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
@@ -175,6 +234,8 @@ function cleanup { 
	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
@@ -187,6 +248,10 @@ 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

echo "Testing VXLAN tunnel..."