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 <maximmi@xxxxxxxxxx>
Reviewed-by: Tariq Toukan <tariqt@xxxxxxxxxx>
---
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
