ipv4, bpf: Introduced to support the ULP to modify sockets during setopt

Note that tcp_getsockopt and tcp_setsockopt support TCP_ULP, while bpf_getsockopt and bpf_setsockopt do not support TCP_ULP. I think we can add the handling of this case. Signed-off-by: zhangmingyi <[email protected]>
kernel-patches · Jan 23, 2025 · 6aa2961 · 6aa2961
1 parent 1fb8a7e
commit 6aa2961
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/net/core/filter.c b/net/core/filter.c
@@ -5391,6 +5391,10 @@ static int sol_tcp_sockopt(struct sock *sk, int optname,
 		if (*optlen < 1)
 			return -EINVAL;
 		break;
+	case TCP_ULP:
+		if (getopt)
+			return -EINVAL;
+		break;
 	case TCP_BPF_SOCK_OPS_CB_FLAGS:
 		if (*optlen != sizeof(int))
 			return -EINVAL;