diff options
Diffstat (limited to 'net/mptcp/protocol.c')
| -rw-r--r-- | net/mptcp/protocol.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 2540d82742ac..cb8b7adf218a 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -2217,6 +2217,36 @@ static bool mptcp_check_close_timeout(const struct sock *sk) return true; } +static void mptcp_check_fastclose(struct mptcp_sock *msk) +{ + struct mptcp_subflow_context *subflow, *tmp; + struct sock *sk = &msk->sk.icsk_inet.sk; + + if (likely(!READ_ONCE(msk->rcv_fastclose))) + return; + + mptcp_token_destroy(msk); + + list_for_each_entry_safe(subflow, tmp, &msk->conn_list, node) { + struct sock *tcp_sk = mptcp_subflow_tcp_sock(subflow); + + lock_sock(tcp_sk); + if (tcp_sk->sk_state != TCP_CLOSE) { + tcp_send_active_reset(tcp_sk, GFP_ATOMIC); + tcp_set_state(tcp_sk, TCP_CLOSE); + } + release_sock(tcp_sk); + } + + inet_sk_state_store(sk, TCP_CLOSE); + sk->sk_shutdown = SHUTDOWN_MASK; + smp_mb__before_atomic(); /* SHUTDOWN must be visible first */ + set_bit(MPTCP_DATA_READY, &msk->flags); + set_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags); + + mptcp_close_wake_up(sk); +} + static void mptcp_worker(struct work_struct *work) { struct mptcp_sock *msk = container_of(work, struct mptcp_sock, work); @@ -2233,6 +2263,9 @@ static void mptcp_worker(struct work_struct *work) mptcp_check_data_fin_ack(sk); __mptcp_flush_join_list(msk); + + mptcp_check_fastclose(msk); + if (test_and_clear_bit(MPTCP_WORK_CLOSE_SUBFLOW, &msk->flags)) __mptcp_close_subflow(msk); |