}
SEC("tc")
+int gre_set_tunnel_no_key(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_ttl = 64;
+
+ ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
+ BPF_F_ZERO_CSUM_TX | BPF_F_SEQ_NUMBER |
+ BPF_F_NO_TUNNEL_KEY);
+ if (ret < 0) {
+ log_err(ret);
+ return TC_ACT_SHOT;
+ }
+
+ return TC_ACT_OK;
+}
+
+SEC("tc")
int gre_get_tunnel(struct __sk_buff *skb)
{
int ret;
add_gre_tunnel()
{
+ tun_key=
+ if [ -n "$1" ]; then
+ tun_key="key $1"
+ fi
+
# at_ns0 namespace
ip netns exec at_ns0 \
- ip link add dev $DEV_NS type $TYPE seq key 2 \
+ ip link add dev $DEV_NS type $TYPE seq $tun_key \
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
# root namespace
- ip link add dev $DEV type $TYPE key 2 external
+ ip link add dev $DEV type $TYPE $tun_key external
ip link set dev $DEV up
ip addr add dev $DEV 10.1.1.200/24
}
check $TYPE
config_device
- add_gre_tunnel
+ add_gre_tunnel 2
attach_bpf $DEV gre_set_tunnel gre_get_tunnel
ping $PING_ARG 10.1.1.100
check_err $?
echo -e ${GREEN}"PASS: $TYPE"${NC}
}
+test_gre_no_tunnel_key()
+{
+ TYPE=gre
+ DEV_NS=gre00
+ DEV=gre11
+ ret=0
+
+ check $TYPE
+ config_device
+ add_gre_tunnel
+ attach_bpf $DEV gre_set_tunnel_no_key gre_get_tunnel
+ ping $PING_ARG 10.1.1.100
+ check_err $?
+ ip netns exec at_ns0 ping $PING_ARG 10.1.1.200
+ check_err $?
+ cleanup
+
+ if [ $ret -ne 0 ]; then
+ echo -e ${RED}"FAIL: $TYPE"${NC}
+ return 1
+ fi
+ echo -e ${GREEN}"PASS: $TYPE"${NC}
+}
+
test_ip6gre()
{
TYPE=ip6gre
ip link del ipip6tnl11 2> /dev/null
ip link del ip6ip6tnl11 2> /dev/null
ip link del gretap11 2> /dev/null
+ ip link del gre11 2> /dev/null
ip link del ip6gre11 2> /dev/null
ip link del ip6gretap11 2> /dev/null
ip link del geneve11 2> /dev/null
test_gre
errors=$(( $errors + $? ))
+ echo "Testing GRE tunnel (without tunnel keys)..."
+ test_gre_no_tunnel_key
+ errors=$(( $errors + $? ))
+
echo "Testing IP6GRE tunnel..."
test_ip6gre
errors=$(( $errors + $? ))