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 | */ |
17 | unsigned int rxrpc_max_backlog __read_mostly = 10; |
18 | |
19 | /* |
20 | * How long to wait before scheduling an ACK with subtype DELAY (in jiffies). |
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 | */ |
26 | unsigned long rxrpc_soft_ack_delay = HZ; |
27 | |
28 | /* |
29 | * How long to wait before scheduling an ACK with subtype IDLE (in jiffies). |
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 | */ |
35 | unsigned long rxrpc_idle_ack_delay = HZ / 2; |
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 | */ |
43 | unsigned 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 | */ |
49 | unsigned int rxrpc_rx_mtu = 5692; |
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 | */ |
55 | unsigned int rxrpc_rx_jumbo_max = 4; |
56 | |
57 | #ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY |
58 | /* |
59 | * The delay to inject into packet reception. |
60 | */ |
61 | unsigned long rxrpc_inject_rx_delay; |
62 | #endif |
63 | |