diff options
Diffstat (limited to 'net/mptcp/protocol.c')
| -rw-r--r-- | net/mptcp/protocol.c | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 14b253d10ccf..3980fbb6f31e 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -374,6 +374,27 @@ void mptcp_subflow_eof(struct sock *sk) sock_hold(sk); } +static void mptcp_check_for_eof(struct mptcp_sock *msk) +{ + struct mptcp_subflow_context *subflow; + struct sock *sk = (struct sock *)msk; + int receivers = 0; + + mptcp_for_each_subflow(msk, subflow) + receivers += !subflow->rx_eof; + + if (!receivers && !(sk->sk_shutdown & RCV_SHUTDOWN)) { + /* hopefully temporary hack: propagate shutdown status + * to msk, when all subflows agree on it + */ + sk->sk_shutdown |= RCV_SHUTDOWN; + + smp_mb__before_atomic(); /* SHUTDOWN must be visible first */ + set_bit(MPTCP_DATA_READY, &msk->flags); + sk->sk_data_ready(sk); + } +} + static void mptcp_stop_timer(struct sock *sk) { struct inet_connection_sock *icsk = inet_csk(sk); @@ -1011,6 +1032,9 @@ fallback: break; } + if (test_and_clear_bit(MPTCP_WORK_EOF, &msk->flags)) + mptcp_check_for_eof(msk); + if (sk->sk_shutdown & RCV_SHUTDOWN) break; @@ -1148,27 +1172,6 @@ static unsigned int mptcp_sync_mss(struct sock *sk, u32 pmtu) return 0; } -static void mptcp_check_for_eof(struct mptcp_sock *msk) -{ - struct mptcp_subflow_context *subflow; - struct sock *sk = (struct sock *)msk; - int receivers = 0; - - mptcp_for_each_subflow(msk, subflow) - receivers += !subflow->rx_eof; - - if (!receivers && !(sk->sk_shutdown & RCV_SHUTDOWN)) { - /* hopefully temporary hack: propagate shutdown status - * to msk, when all subflows agree on it - */ - sk->sk_shutdown |= RCV_SHUTDOWN; - - smp_mb__before_atomic(); /* SHUTDOWN must be visible first */ - set_bit(MPTCP_DATA_READY, &msk->flags); - sk->sk_data_ready(sk); - } -} - static void mptcp_worker(struct work_struct *work) { struct mptcp_sock *msk = container_of(work, struct mptcp_sock, work); |