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Diffstat (limited to 'net/mptcp')
-rw-r--r--net/mptcp/protocol.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 612f6d49f1bb..3ab060e30038 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1632,6 +1632,33 @@ static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname,
return sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname, optval, optlen);
}
+static int mptcp_setsockopt_v6(struct mptcp_sock *msk, int optname,
+ char __user *optval, unsigned int optlen)
+{
+ struct sock *sk = (struct sock *)msk;
+ int ret = -EOPNOTSUPP;
+ struct socket *ssock;
+
+ switch (optname) {
+ case IPV6_V6ONLY:
+ lock_sock(sk);
+ ssock = __mptcp_nmpc_socket(msk);
+ if (!ssock) {
+ release_sock(sk);
+ return -EINVAL;
+ }
+
+ ret = tcp_setsockopt(ssock->sk, SOL_IPV6, optname, optval, optlen);
+ if (ret == 0)
+ sk->sk_ipv6only = ssock->sk->sk_ipv6only;
+
+ release_sock(sk);
+ break;
+ }
+
+ return ret;
+}
+
static int mptcp_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen)
{
@@ -1655,6 +1682,9 @@ static int mptcp_setsockopt(struct sock *sk, int level, int optname,
if (ssk)
return tcp_setsockopt(ssk, level, optname, optval, optlen);
+ if (level == SOL_IPV6)
+ return mptcp_setsockopt_v6(msk, optname, optval, optlen);
+
return -EOPNOTSUPP;
}