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[bpf-next,v6,1/6] bpf: Use ipv6_only_sock in bpf_tcp_gen_syncookie

Message ID 20220422172422.4037988-2-maximmi@nvidia.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series New BPF helpers to accelerate synproxy | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail PR summary
bpf/vmtest-bpf-next-VM_Test-1 fail Logs for Kernel LATEST on ubuntu-latest + selftests
bpf/vmtest-bpf-next-VM_Test-2 fail Logs for Kernel LATEST on z15 + selftests

Commit Message

Maxim Mikityanskiy April 22, 2022, 5:24 p.m. UTC 
Instead of querying the sk_ipv6only field directly, use the dedicated
ipv6_only_sock helper.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Lorenz Bauer <lmb@cloudflare.com>
Acked-by: Petar Penkov <ppenkov@google.com>
---
 net/core/filter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/core/filter.c b/net/core/filter.c
index 8847316ee20e..207a13db5c80 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -7099,7 +7099,7 @@  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);