linux-stable/tools/testing/selftests/bpf/with_tunnels.sh
Petar Penkov 50b3ed57de selftests/bpf: test bpf flow dissection
Adds a test that sends different types of packets over multiple
tunnels and verifies that valid packets are dissected correctly.  To do
so, a tc-flower rule is added to drop packets on UDP src port 9, and
packets are sent from ports 8, 9, and 10. Only the packets on port 9
should be dropped. Because tc-flower relies on the flow dissector to
match flows, correct classification demonstrates correct dissection.

Also add support logic to load the BPF program and to inject the test
packets.

Signed-off-by: Petar Penkov <ppenkov@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-09-14 12:04:33 -07:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# setup tunnels for flow dissection test
readonly SUFFIX="test_$(mktemp -u XXXX)"
CONFIG="remote 127.0.0.2 local 127.0.0.1 dev lo"
setup() {
ip link add "ipip_${SUFFIX}" type ipip ${CONFIG}
ip link add "gre_${SUFFIX}" type gre ${CONFIG}
ip link add "sit_${SUFFIX}" type sit ${CONFIG}
echo "tunnels before test:"
ip tunnel show
ip link set "ipip_${SUFFIX}" up
ip link set "gre_${SUFFIX}" up
ip link set "sit_${SUFFIX}" up
}
cleanup() {
ip tunnel del "ipip_${SUFFIX}"
ip tunnel del "gre_${SUFFIX}"
ip tunnel del "sit_${SUFFIX}"
echo "tunnels after test:"
ip tunnel show
}
trap cleanup EXIT
setup
"$@"
exit "$?"