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From: Kuniyuki Iwashima To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Kumar Kartikeya Dwivedi Cc: Amery Hung , Yonghong Song , John Fastabend , Stanislav Fomichev , Eric Dumazet , Neal Cardwell , Willem de Bruijn , Tenzin Ukyab , "=?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?=" , Kuniyuki Iwashima , Kuniyuki Iwashima , bpf@vger.kernel.org, netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" 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 --- .../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