diff options
Diffstat (limited to 'net/mptcp/sockopt.c')
| -rw-r--r-- | net/mptcp/sockopt.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index c7cb68c725b2..f85e9bbfe86f 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -560,6 +560,7 @@ static bool mptcp_supported_sockopt(int level, int optname) case TCP_TX_DELAY: case TCP_INQ: case TCP_FASTOPEN_CONNECT: + case TCP_FASTOPEN_NO_COOKIE: return true; } @@ -568,8 +569,8 @@ static bool mptcp_supported_sockopt(int level, int optname) /* TCP_REPAIR, TCP_REPAIR_QUEUE, TCP_QUEUE_SEQ, TCP_REPAIR_OPTIONS, * TCP_REPAIR_WINDOW are not supported, better avoid this mess */ - /* TCP_FASTOPEN_KEY, TCP_FASTOPEN, TCP_FASTOPEN_NO_COOKIE, - * are not supported fastopen is currently unsupported + /* TCP_FASTOPEN_KEY, TCP_FASTOPEN are not supported because + * fastopen for the listener side is currently unsupported */ } return false; @@ -757,29 +758,17 @@ static int mptcp_setsockopt_v4(struct mptcp_sock *msk, int optname, return -EOPNOTSUPP; } -static int mptcp_setsockopt_sol_tcp_defer(struct mptcp_sock *msk, sockptr_t optval, - unsigned int optlen) -{ - struct socket *listener; - - listener = __mptcp_nmpc_socket(msk); - if (!listener) - return 0; /* TCP_DEFER_ACCEPT does not fail */ - - return tcp_setsockopt(listener->sk, SOL_TCP, TCP_DEFER_ACCEPT, optval, optlen); -} - -static int mptcp_setsockopt_sol_tcp_fastopen_connect(struct mptcp_sock *msk, sockptr_t optval, - unsigned int optlen) +static int mptcp_setsockopt_first_sf_only(struct mptcp_sock *msk, int level, int optname, + sockptr_t optval, unsigned int optlen) { struct socket *sock; - /* Limit to first subflow */ + /* Limit to first subflow, before the connection establishment */ sock = __mptcp_nmpc_socket(msk); if (!sock) return -EINVAL; - return tcp_setsockopt(sock->sk, SOL_TCP, TCP_FASTOPEN_CONNECT, optval, optlen); + return tcp_setsockopt(sock->sk, level, optname, optval, optlen); } static int mptcp_setsockopt_sol_tcp(struct mptcp_sock *msk, int optname, @@ -809,9 +798,13 @@ static int mptcp_setsockopt_sol_tcp(struct mptcp_sock *msk, int optname, case TCP_NODELAY: return mptcp_setsockopt_sol_tcp_nodelay(msk, optval, optlen); case TCP_DEFER_ACCEPT: - return mptcp_setsockopt_sol_tcp_defer(msk, optval, optlen); + /* See tcp.c: TCP_DEFER_ACCEPT does not fail */ + mptcp_setsockopt_first_sf_only(msk, SOL_TCP, optname, optval, optlen); + return 0; case TCP_FASTOPEN_CONNECT: - return mptcp_setsockopt_sol_tcp_fastopen_connect(msk, optval, optlen); + case TCP_FASTOPEN_NO_COOKIE: + return mptcp_setsockopt_first_sf_only(msk, SOL_TCP, optname, + optval, optlen); } return -EOPNOTSUPP; @@ -1174,6 +1167,7 @@ static int mptcp_getsockopt_sol_tcp(struct mptcp_sock *msk, int optname, case TCP_CC_INFO: case TCP_DEFER_ACCEPT: case TCP_FASTOPEN_CONNECT: + case TCP_FASTOPEN_NO_COOKIE: return mptcp_getsockopt_first_sf_only(msk, SOL_TCP, optname, optval, optlen); case TCP_INQ: |