selftests/bpf: test_xdp_veth: Add XDP broadcast redirection tests

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XDP redirections with BPF_F_BROADCAST and BPF_F_EXCLUDE_INGRESS flags
are tested by test_xdp_redirect_multi.sh but not within the test_progs
framework.

Add a broadcast test case in test_xdp_veth.c to test them.
Use the same BPF programs than the one used by
test_xdp_redirect_multi.sh.
Use a BPF map to select the broadcast flags.
Use a BPF map with an entry per veth to check whether packets are
received or not

Signed-off-by: Bastien Curutchet (eBPF Foundation) <bastien.curutchet@bootlin.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250212-redirect-multi-v5-4-fd0d39fca6e6@bootlin.com

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Bastien Curutchet (eBPF Foundation) 2025-02-12 12:11:12 +01:00 • committed by Martin KaFai Lau

parent 09c8bb1fae

commit 1e7e634542

2 changed files with 205 additions and 0 deletions

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157

tools/testing/selftests/bpf/prog_tests/test_xdp_veth.c

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48

tools/testing/selftests/bpf/progs/xdp_redirect_map.c

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