77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/* Miscellaneous bits
|
||
|
|
*
|
||
|
|
* Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
|
||
|
|
* Written by David Howells (dhowells@redhat.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <net/sock.h>
|
||
|
|
#include <net/af_rxrpc.h>
|
||
|
|
#include "ar-internal.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The maximum listening backlog queue size that may be set on a socket by
|
||
|
|
* listen().
|
||
|
|
*/
|
||
|
|
unsigned int rxrpc_max_backlog __read_mostly = 10;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* How long to wait before scheduling ACK generation after seeing a
|
||
|
|
* packet with RXRPC_REQUEST_ACK set (in jiffies).
|
||
|
|
*/
|
||
|
|
unsigned long rxrpc_requested_ack_delay = 1;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* How long to wait before scheduling an ACK with subtype DELAY (in jiffies).
|
||
|
|
*
|
||
|
|
* We use this when we've received new data packets. If those packets aren't
|
||
|
|
* all consumed within this time we will send a DELAY ACK if an ACK was not
|
||
|
|
* requested to let the sender know it doesn't need to resend.
|
||
|
|
*/
|
||
|
|
unsigned long rxrpc_soft_ack_delay = HZ;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* How long to wait before scheduling an ACK with subtype IDLE (in jiffies).
|
||
|
|
*
|
||
|
|
* We use this when we've consumed some previously soft-ACK'd packets when
|
||
|
|
* further packets aren't immediately received to decide when to send an IDLE
|
||
|
|
* ACK let the other end know that it can free up its Tx buffer space.
|
||
|
|
*/
|
||
|
|
unsigned long rxrpc_idle_ack_delay = HZ / 2;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Receive window size in packets. This indicates the maximum number of
|
||
|
|
* unconsumed received packets we're willing to retain in memory. Once this
|
||
|
|
* limit is hit, we should generate an EXCEEDS_WINDOW ACK and discard further
|
||
|
|
* packets.
|
||
|
|
*/
|
||
|
|
unsigned int rxrpc_rx_window_size = RXRPC_INIT_RX_WINDOW_SIZE;
|
||
|
|
#if (RXRPC_RXTX_BUFF_SIZE - 1) < RXRPC_INIT_RX_WINDOW_SIZE
|
||
|
|
#error Need to reduce RXRPC_INIT_RX_WINDOW_SIZE
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Maximum Rx MTU size. This indicates to the sender the size of jumbo packet
|
||
|
|
* made by gluing normal packets together that we're willing to handle.
|
||
|
|
*/
|
||
|
|
unsigned int rxrpc_rx_mtu = 5692;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The maximum number of fragments in a received jumbo packet that we tell the
|
||
|
|
* sender that we're willing to handle.
|
||
|
|
*/
|
||
|
|
unsigned int rxrpc_rx_jumbo_max = 4;
|
||
|
|
|
||
|
|
const s8 rxrpc_ack_priority[] = {
|
||
|
|
[0] = 0,
|
||
|
|
[RXRPC_ACK_DELAY] = 1,
|
||
|
|
[RXRPC_ACK_REQUESTED] = 2,
|
||
|
|
[RXRPC_ACK_IDLE] = 3,
|
||
|
|
[RXRPC_ACK_DUPLICATE] = 4,
|
||
|
|
[RXRPC_ACK_OUT_OF_SEQUENCE] = 5,
|
||
|
|
[RXRPC_ACK_EXCEEDS_WINDOW] = 6,
|
||
|
|
[RXRPC_ACK_NOSPACE] = 7,
|
||
|
|
[RXRPC_ACK_PING_RESPONSE] = 8,
|
||
|
|
};
|