[PATCH bpf-next 01/10] bpf: Use ipv6_only_sock in bpf_tcp_gen_syncookie
From: Maxim Mikityanskiy <hidden>
Date: 2021-10-19 14:47:42
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [networking] (tcx & tc bpf, sock_addr), networking [general], the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Instead of querying the sk_ipv6only field directly, use the dedicated ipv6_only_sock helper. Signed-off-by: Maxim Mikityanskiy <redacted> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> --- net/core/filter.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/filter.c b/net/core/filter.c
index 4bace37a6a44..d830055d477c 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c@@ -6788,7 +6788,7 @@ BPF_CALL_5(bpf_tcp_gen_syncookie, struct sock *, sk, void *, iph, u32, iph_len, */ switch (((struct iphdr *)iph)->version) { case 4: - if (sk->sk_family == AF_INET6 && sk->sk_ipv6only) + if (sk->sk_family == AF_INET6 && ipv6_only_sock(sk)) return -EINVAL; mss = tcp_v4_get_syncookie(sk, iph, th, &cookie);
--
2.30.2