[PATCH bpf v2 1/4] bpf: Use ipv6_only_sock in bpf_tcp_gen_syncookie
From: Maxim Mikityanskiy <hidden>
Date: 2022-01-24 15:13:04
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, Martin KaFai Lau, "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.
Fixes: 70d66244317e ("bpf: add bpf_tcp_gen_syncookie 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 4603b7cd3cd1..05efa691b796 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c@@ -6848,7 +6848,7 @@ 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