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selftest: bpf: Use bpf_tcp_ops_set_flags() in bpf_tcp_ops_hdr.c.

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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>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20261008031604.256498-4-kuniyu@google.com
This commit is contained in:
Kuniyuki Iwashima 2026-10-08 03:15:23 +00:00 committed by Alexei Starovoitov
parent 4e2385abec
commit ca577d08f8
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1 changed files with 20 additions and 0 deletions
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20
tools/testing/selftests/bpf/progs/bpf_tcp_ops_hdr.c
View File

@ -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,