[PATCH v5 bpf-next 03/10] selftest: bpf: Use bpf_tcp_ops_set_flags() in bpf_tcp_ops_hdr.c.
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COOLING5d
IN BPF-NEXT: 4 (3M)
From: Kuniyuki Iwashima <kuniyu@google.com>
Date: 2026-10-08 03:16:10
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Shuah Khan, Linus Torvalds
Revision v5 of 5 in this series; 2 review trailers; queued in bpf-next as ca577d08f88b on 2026-10-10.
Revisions (5)
The next patch guards bpf_tcp_ops callbacks in the fast path with per-socket flags. Let's use bpf_tcp_ops_set_flags() to enable flags for parse_hdr, write_hdr_opt, and hdr_opt_len. Note that BPF_TCP_OPS_FLAG_PARSE_HDR_OPT_ALL and BPF_TCP_OPS_FLAG_PARSE_HDR_OPT_UNKNOWN are used on the server and client, respectively, for better coverage. Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com> Acked-by: Stanislav Fomichev <sdf@fomichev.me> Reviewed-by: Amery Hung <redacted> --- .../selftests/bpf/progs/bpf_tcp_ops_hdr.c | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/bpf_tcp_ops_hdr.c b/tools/testing/selftests/bpf/progs/bpf_tcp_ops_hdr.c
index f3e3dff13784..706e94d794e4 100644
--- a/tools/testing/selftests/bpf/progs/bpf_tcp_ops_hdr.c
+++ b/tools/testing/selftests/bpf/progs/bpf_tcp_ops_hdr.c@@ -18,6 +18,24 @@ int found_cnt; __u8 found_d0; __u8 found_d1; +SEC("struct_ops") +void BPF_PROG(test_listen, struct sock *sk) +{ + bpf_tcp_ops_set_flags((struct tcp_sock *)sk, + BPF_TCP_OPS_FLAG_PARSE_HDR_OPT_ALL | + BPF_TCP_OPS_FLAG_WRITE_HDR_OPT, + 0); +} + +SEC("struct_ops") +void BPF_PROG(test_connect, struct sock *sk) +{ + bpf_tcp_ops_set_flags((struct tcp_sock *)sk, + BPF_TCP_OPS_FLAG_PARSE_HDR_OPT_UNKNOWN | + BPF_TCP_OPS_FLAG_WRITE_HDR_OPT, + 0); +} + SEC("struct_ops") void BPF_PROG(test_hdr_opt_len, struct sock *sk, struct sk_buff *skb, struct request_sock *req, struct sk_buff *syn_skb,
@@ -78,6 +96,8 @@ void BPF_PROG(test_parse_hdr, struct sock *sk, struct sk_buff *skb) SEC(".struct_ops.link") struct bpf_tcp_ops test_hdr_ops = { + .listen = (void *)test_listen, + .connect = (void *)test_connect, .hdr_opt_len = (void *)test_hdr_opt_len, .write_hdr_opt = (void *)test_write_hdr_opt, .parse_hdr = (void *)test_parse_hdr,
--
2.56.0.360.g66cac248cb-goog