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selftests/bpf: Add test based on port range for BPF flow dissector 

Add a simple test to make sure that a filter based on specified port
range classifies packets correctly.

Signed-off-by: Yoshiki Komachi <komachi.yoshiki@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Petar Penkov <ppenkov@google.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200117070533.402240-3-komachi.yoshiki@gmail.com
This commit is contained in:
Yoshiki Komachi 2020-01-17 16:05:33 +09:00 committed by Daniel Borkmann
parent 59fb9b62fb
commit 265bb35906
1 changed files with 14 additions and 0 deletions
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14
tools/testing/selftests/bpf/test_flow_dissector.sh
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@ -139,6 +139,20 @@ echo "Testing IPv4 + GRE..."
tc filter del dev lo ingress pref 1337
echo "Testing port range..."
# Drops all IP/UDP packets coming from port 8-10
tc filter add dev lo parent ffff: protocol ip pref 1337 flower ip_proto \
udp src_port 8-10 action drop
# Send 10 IPv4/UDP packets from port 7. Filter should not drop any.
./test_flow_dissector -i 4 -f 7
# Send 10 IPv4/UDP packets from port 9. Filter should drop all.
./test_flow_dissector -i 4 -f 9 -F
# Send 10 IPv4/UDP packets from port 11. Filter should not drop any.
./test_flow_dissector -i 4 -f 11
tc filter del dev lo ingress pref 1337
echo "Testing IPv6..."
# Drops all IPv6/UDP packets coming from port 9
tc filter add dev lo parent ffff: protocol ipv6 pref 1337 flower ip_proto \