diff options
| author | Sun Jian <sun.jian.kdev@gmail.com> | 2026-04-08 11:46:23 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-04-12 15:42:57 -0700 |
| commit | f1cc94665df907a85589ddb5fe74d7768ff61533 (patch) | |
| tree | ea85eea33e93b218bbc7c04a87fd9f2d47fcd296 /tools/testing/selftests/bpf/progs/empty_skb.c | |
| parent | 12bec2bd4b76d81c5d3996bd14ec1b7f4d983747 (diff) | |
selftests/bpf: cover short IPv4/IPv6 inputs with adjust_room
Add a selftest covering ETH_HLEN-sized IPv4/IPv6 EtherType inputs for
bpf_prog_test_run_skb().
Reuse a single zero-initialized struct ethhdr eth_hlen and set
eth_hlen.h_proto from the per-test h_proto field.
Also add a dedicated tc_adjust_room program and route the short
IPv4/IPv6 cases to it, so the selftest actually exercises the
bpf_skb_adjust_room() path from the report.
Signed-off-by: Sun Jian <sun.jian.kdev@gmail.com>
Link: https://lore.kernel.org/r/20260408034623.180320-3-sun.jian.kdev@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/empty_skb.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/empty_skb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/empty_skb.c b/tools/testing/selftests/bpf/progs/empty_skb.c index 4b0cd6753251..44326f5cc8bb 100644 --- a/tools/testing/selftests/bpf/progs/empty_skb.c +++ b/tools/testing/selftests/bpf/progs/empty_skb.c @@ -35,3 +35,10 @@ int tc_redirect_egress(struct __sk_buff *skb) ret = bpf_clone_redirect(skb, ifindex, 0); return 0; } + +SEC("tc") +int tc_adjust_room(struct __sk_buff *skb) +{ + ret = bpf_skb_adjust_room(skb, 4, BPF_ADJ_ROOM_NET, 0); + return 0; +} |