98cdabcd07
Validate basic tunnel encapsulation using ipip. Set up two namespaces connected by veth. Connect a client and server. Do this with and without bpf encap. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
76 lines
1.6 KiB
Bash
Executable File
76 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# In-place tunneling
|
|
|
|
# must match the port that the bpf program filters on
|
|
readonly port=8000
|
|
|
|
readonly ns_prefix="ns-$$-"
|
|
readonly ns1="${ns_prefix}1"
|
|
readonly ns2="${ns_prefix}2"
|
|
|
|
readonly ns1_v4=192.168.1.1
|
|
readonly ns2_v4=192.168.1.2
|
|
|
|
setup() {
|
|
ip netns add "${ns1}"
|
|
ip netns add "${ns2}"
|
|
|
|
ip link add dev veth1 mtu 1500 netns "${ns1}" type veth \
|
|
peer name veth2 mtu 1500 netns "${ns2}"
|
|
|
|
ip -netns "${ns1}" link set veth1 up
|
|
ip -netns "${ns2}" link set veth2 up
|
|
|
|
ip -netns "${ns1}" -4 addr add "${ns1_v4}/24" dev veth1
|
|
ip -netns "${ns2}" -4 addr add "${ns2_v4}/24" dev veth2
|
|
|
|
sleep 1
|
|
}
|
|
|
|
cleanup() {
|
|
ip netns del "${ns2}"
|
|
ip netns del "${ns1}"
|
|
}
|
|
|
|
server_listen() {
|
|
ip netns exec "${ns2}" nc -l -p "${port}" &
|
|
sleep 0.2
|
|
}
|
|
|
|
client_connect() {
|
|
ip netns exec "${ns1}" nc -z -w 1 "${ns2_v4}" "${port}"
|
|
echo $?
|
|
}
|
|
|
|
set -e
|
|
trap cleanup EXIT
|
|
|
|
setup
|
|
|
|
# basic communication works
|
|
echo "test basic connectivity"
|
|
server_listen
|
|
client_connect
|
|
|
|
# clientside, insert bpf program to encap all TCP to port ${port}
|
|
# client can no longer connect
|
|
ip netns exec "${ns1}" tc qdisc add dev veth1 clsact
|
|
ip netns exec "${ns1}" tc filter add dev veth1 egress \
|
|
bpf direct-action object-file ./test_tc_tunnel.o section encap
|
|
echo "test bpf encap without decap (expect failure)"
|
|
server_listen
|
|
! client_connect
|
|
|
|
# serverside, insert decap module
|
|
# server is still running
|
|
# client can connect again
|
|
ip netns exec "${ns2}" ip link add dev testtun0 type ipip \
|
|
remote "${ns1_v4}" local "${ns2_v4}"
|
|
ip netns exec "${ns2}" ip link set dev testtun0 up
|
|
echo "test bpf encap with tunnel device decap"
|
|
client_connect
|
|
|
|
echo OK
|