1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Miscellaneous bits
3 *
4 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7
8#include <linux/kernel.h>
9#include <net/sock.h>
10#include <net/af_rxrpc.h>
11#include "ar-internal.h"
12
13/*
14 * The maximum listening backlog queue size that may be set on a socket by
15 * listen().
16 */
17unsigned int rxrpc_max_backlog __read_mostly = 10;
18
19/*
20 * How long to wait before scheduling an ACK with subtype DELAY (in ms).
21 *
22 * We use this when we've received new data packets. If those packets aren't
23 * all consumed within this time we will send a DELAY ACK if an ACK was not
24 * requested to let the sender know it doesn't need to resend.
25 */
26unsigned long rxrpc_soft_ack_delay = 1000;
27
28/*
29 * How long to wait before scheduling an ACK with subtype IDLE (in ms).
30 *
31 * We use this when we've consumed some previously soft-ACK'd packets when
32 * further packets aren't immediately received to decide when to send an IDLE
33 * ACK let the other end know that it can free up its Tx buffer space.
34 */
35unsigned long rxrpc_idle_ack_delay = 500;
36
37/*
38 * Receive window size in packets. This indicates the maximum number of
39 * unconsumed received packets we're willing to retain in memory. Once this
40 * limit is hit, we should generate an EXCEEDS_WINDOW ACK and discard further
41 * packets.
42 */
43unsigned int rxrpc_rx_window_size = 255;
44
45/*
46 * Maximum Rx MTU size. This indicates to the sender the size of jumbo packet
47 * made by gluing normal packets together that we're willing to handle.
48 */
49unsigned int rxrpc_rx_mtu = RXRPC_JUMBO(46);
50
51/*
52 * The maximum number of fragments in a received jumbo packet that we tell the
53 * sender that we're willing to handle.
54 */
55unsigned int rxrpc_rx_jumbo_max = 46;
56
57#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY
58/*
59 * The delay to inject into packet reception.
60 */
61unsigned long rxrpc_inject_rx_delay;
62#endif
63

source code of linux/net/rxrpc/misc.c