diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index b7f089b79b42..1c04dad774a7 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -302,6 +302,12 @@ EXPORT_SYMBOL(sysctl_tcp_wmem); atomic_long_t tcp_memory_allocated; /* Current allocated memory. */ EXPORT_SYMBOL(tcp_memory_allocated); +int sysctl_tcp_delack_seg __read_mostly = TCP_DELACK_SEG; +EXPORT_SYMBOL(sysctl_tcp_delack_seg); + +int sysctl_tcp_use_userconfig __read_mostly; +EXPORT_SYMBOL(sysctl_tcp_use_userconfig); + /* * Current number of TCP sockets. */ @@ -1407,8 +1413,11 @@ static void tcp_cleanup_rbuf(struct sock *sk, int copied) /* Delayed ACKs frequently hit locked sockets during bulk * receive. */ if (icsk->icsk_ack.blocked || - /* Once-per-two-segments ACK was not sent by tcp_input.c */ - tp->rcv_nxt - tp->rcv_wup > icsk->icsk_ack.rcv_mss || + /* Once-per-sysctl_tcp_delack_seg segments + * ACK was not sent by tcp_input.c + */ + tp->rcv_nxt - tp->rcv_wup > (icsk->icsk_ack.rcv_mss) * + sysctl_tcp_delack_seg || /* * If this read emptied read buffer, we send ACK, if * connection is not bidirectional, user drained @@ -2736,6 +2745,14 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) rate64 = rate != ~0U ? rate : ~0ULL; put_unaligned(rate64, &info->tcpi_max_pacing_rate); + /* Expose reference count for socket */ + if (sk->sk_socket) { + struct file *filep = sk->sk_socket->file; + + if (filep) + info->tcpi_count = file_count(filep); + } + do { start = u64_stats_fetch_begin_irq(&tp->syncp); put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked); |