Merge branch 'Remove unused test_ipip.sh test and add missed'

Hangbin Liu says:

====================

In comment 173ca26e9b51 ("samples/bpf: add comprehensive ipip, ipip6,
ip6ip6 test") we added some bpf tunnel tests. In commit 933a741e3b82
("selftests/bpf: bpf tunnel test.") when we moved it to the current
folder, we missed some points:

1. ip6ip6 test is not added
2. forgot to remove test_ipip.sh in sample folder
3. TCP test code is not removed in test_tunnel_kern.c

In this patch set I add back ip6ip6 test and remove unused code. I'm not sure
if this should be net or net-next, so just set to net.

Here is the test result:
```
Testing IP6IP6 tunnel...
PING ::11(::11) 56 data bytes

--- ::11 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 63ms
rtt min/avg/max/mdev = 0.014/1028.308/2060.906/841.361 ms, pipe 2
PING 1::11(1::11) 56 data bytes

--- 1::11 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 48ms
rtt min/avg/max/mdev = 0.026/0.029/0.036/0.006 ms
PING 1::22(1::22) 56 data bytes

--- 1::22 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 47ms
rtt min/avg/max/mdev = 0.030/0.048/0.067/0.016 ms
PASS: ip6ip6tnl
```

v3:
Add back ICMP check as Martin suggested.

v2: Keep ip6ip6 section in test_tunnel_kern.c.
====================

Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 0 insertions, 179 deletions

diff --git a/samples/bpf/test_ipip.sh b/samples/bpf/test_ipip.sh
deleted file mode 100755
index 9e507c305c6e..000000000000
--- a/samples/bpf/test_ipip.sh
+++ /dev/null
@@ -1,179 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-function config_device {
-	ip netns add at_ns0
-	ip netns add at_ns1
-	ip netns add at_ns2
-	ip link add veth0 type veth peer name veth0b
-	ip link add veth1 type veth peer name veth1b
-	ip link add veth2 type veth peer name veth2b
-	ip link set veth0b up
-	ip link set veth1b up
-	ip link set veth2b up
-	ip link set dev veth0b mtu 1500
-	ip link set dev veth1b mtu 1500
-	ip link set dev veth2b mtu 1500
-	ip link set veth0 netns at_ns0
-	ip link set veth1 netns at_ns1
-	ip link set veth2 netns at_ns2
-	ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
-	ip netns exec at_ns0 ip addr add 2401:db00::1/64 dev veth0 nodad
-	ip netns exec at_ns0 ip link set dev veth0 up
-	ip netns exec at_ns1 ip addr add 172.16.1.101/24 dev veth1
-	ip netns exec at_ns1 ip addr add 2401:db00::2/64 dev veth1 nodad
-	ip netns exec at_ns1 ip link set dev veth1 up
-	ip netns exec at_ns2 ip addr add 172.16.1.200/24 dev veth2
-	ip netns exec at_ns2 ip addr add 2401:db00::3/64 dev veth2 nodad
-	ip netns exec at_ns2 ip link set dev veth2 up
-	ip link add br0 type bridge
-	ip link set br0 up
-	ip link set dev br0 mtu 1500
-	ip link set veth0b master br0
-	ip link set veth1b master br0
-	ip link set veth2b master br0
-}
-
-function add_ipip_tunnel {
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type ipip 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
-	ip netns exec at_ns1 \
-		ip link add dev $DEV_NS type ipip local 172.16.1.101 remote 172.16.1.200
-	ip netns exec at_ns1 ip link set dev $DEV_NS up
-	# same inner IP address in at_ns0 and at_ns1
-	ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	ip netns exec at_ns2 ip link add dev $DEV type ipip external
-	ip netns exec at_ns2 ip link set dev $DEV up
-	ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24
-}
-
-function add_ipip6_tunnel {
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::1/64 remote 2401:db00::3/64
-	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
-	ip netns exec at_ns1 \
-		ip link add dev $DEV_NS type ip6tnl mode ipip6 local 2401:db00::2/64 remote 2401:db00::3/64
-	ip netns exec at_ns1 ip link set dev $DEV_NS up
-	# same inner IP address in at_ns0 and at_ns1
-	ip netns exec at_ns1 ip addr add dev $DEV_NS 10.1.1.100/24
-
-	ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ipip6 external
-	ip netns exec at_ns2 ip link set dev $DEV up
-	ip netns exec at_ns2 ip addr add dev $DEV 10.1.1.200/24
-}
-
-function add_ip6ip6_tunnel {
-	ip netns exec at_ns0 \
-		ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::1/64 remote 2401:db00::3/64
-	ip netns exec at_ns0 ip link set dev $DEV_NS up
-	ip netns exec at_ns0 ip addr add dev $DEV_NS 2601:646::1/64
-	ip netns exec at_ns1 \
-		ip link add dev $DEV_NS type ip6tnl mode ip6ip6 local 2401:db00::2/64 remote 2401:db00::3/64
-	ip netns exec at_ns1 ip link set dev $DEV_NS up
-	# same inner IP address in at_ns0 and at_ns1
-	ip netns exec at_ns1 ip addr add dev $DEV_NS 2601:646::1/64
-
-	ip netns exec at_ns2 ip link add dev $DEV type ip6tnl mode ip6ip6 external
-	ip netns exec at_ns2 ip link set dev $DEV up
-	ip netns exec at_ns2 ip addr add dev $DEV 2601:646::2/64
-}
-
-function attach_bpf {
-	DEV=$1
-	SET_TUNNEL=$2
-	GET_TUNNEL=$3
-	ip netns exec at_ns2 tc qdisc add dev $DEV clsact
-	ip netns exec at_ns2 tc filter add dev $DEV egress bpf da obj tcbpf2_kern.o sec $SET_TUNNEL
-	ip netns exec at_ns2 tc filter add dev $DEV ingress bpf da obj tcbpf2_kern.o sec $GET_TUNNEL
-}
-
-function test_ipip {
-	DEV_NS=ipip_std
-	DEV=ipip_bpf
-	config_device
-#	tcpdump -nei br0 &
-	cat /sys/kernel/debug/tracing/trace_pipe &
-
-	add_ipip_tunnel
-	attach_bpf $DEV ipip_set_tunnel ipip_get_tunnel
-
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	ip netns exec at_ns2 ping -c 1 10.1.1.100
-	ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
-	ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null
-	sleep 0.2
-	# tcp check _same_ IP over different tunnels
-	ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200
-	ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201
-	cleanup
-}
-
-# IPv4 over IPv6 tunnel
-function test_ipip6 {
-	DEV_NS=ipip_std
-	DEV=ipip_bpf
-	config_device
-#	tcpdump -nei br0 &
-	cat /sys/kernel/debug/tracing/trace_pipe &
-
-	add_ipip6_tunnel
-	attach_bpf $DEV ipip6_set_tunnel ipip6_get_tunnel
-
-	ip netns exec at_ns0 ping -c 1 10.1.1.200
-	ip netns exec at_ns2 ping -c 1 10.1.1.100
-	ip netns exec at_ns0 iperf -sD -p 5200 > /dev/null
-	ip netns exec at_ns1 iperf -sD -p 5201 > /dev/null
-	sleep 0.2
-	# tcp check _same_ IP over different tunnels
-	ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5200
-	ip netns exec at_ns2 iperf -c 10.1.1.100 -n 5k -p 5201
-	cleanup
-}
-
-# IPv6 over IPv6 tunnel
-function test_ip6ip6 {
-	DEV_NS=ipip_std
-	DEV=ipip_bpf
-	config_device
-#	tcpdump -nei br0 &
-	cat /sys/kernel/debug/tracing/trace_pipe &
-
-	add_ip6ip6_tunnel
-	attach_bpf $DEV ip6ip6_set_tunnel ip6ip6_get_tunnel
-
-	ip netns exec at_ns0 ping -6 -c 1 2601:646::2
-	ip netns exec at_ns2 ping -6 -c 1 2601:646::1
-	ip netns exec at_ns0 iperf -6sD -p 5200 > /dev/null
-	ip netns exec at_ns1 iperf -6sD -p 5201 > /dev/null
-	sleep 0.2
-	# tcp check _same_ IP over different tunnels
-	ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5200
-	ip netns exec at_ns2 iperf -6c 2601:646::1 -n 5k -p 5201
-	cleanup
-}
-
-function cleanup {
-	set +ex
-	pkill iperf
-	ip netns delete at_ns0
-	ip netns delete at_ns1
-	ip netns delete at_ns2
-	ip link del veth0
-	ip link del veth1
-	ip link del veth2
-	ip link del br0
-	pkill tcpdump
-	pkill cat
-	set -ex
-}
-
-cleanup
-echo "Testing IP tunnels..."
-test_ipip
-test_ipip6
-test_ip6ip6
-echo "*** PASS ***"