blob: 8d481129e592584b4f87837bbfde55c67412ba27 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* BGP I/O.
* Implements packet I/O in a pthread.
* Copyright (C) 2017 Cumulus Networks
* Quentin Young
*/
#ifndef _FRR_BGP_IO_H
#define _FRR_BGP_IO_H
#define BGP_WRITE_PACKET_MAX 64U
#define BGP_READ_PACKET_MAX 10U
#include "bgpd/bgpd.h"
#include "frr_pthread.h"
struct peer_connection;
/**
* Start function for write thread.
*
* @param arg - unused
*/
extern void *bgp_io_start(void *arg);
/**
* Start function for write thread.
*
* Uninitializes all resources and stops the thread.
*
* @param result - where to store data result, unused
*/
extern int bgp_io_stop(void **result, struct frr_pthread *fpt);
/**
* Turns on packet writing for a peer.
*
* After this function is called, any packets placed on connection->obuf will be
* written to connection->fd until no more packets remain.
*
* Additionally, it becomes unsafe to perform socket actions on connection->fd.
*
* @param peer - peer to register
*/
extern void bgp_writes_on(struct peer_connection *peer);
/**
* Turns off packet writing for a peer.
*
* After this function returns, packets placed on connection->obuf will not be
* written to connection->fd by the I/O thread.
*
* After this function returns it becomes safe to perform socket actions on
* connection->fd.
*
* @param connection - connection to deregister
* @param flush - as described
*/
extern void bgp_writes_off(struct peer_connection *connection);
/**
* Turns on packet reading for a peer.
*
* After this function is called, any packets received on connection->fd
* will be read and copied into the FIFO queue connection->ibuf.
*
* Additionally, it becomes unsafe to perform socket actions on connection->fd.
*
* Whenever one or more packets are placed onto connection->ibuf, a task of type
* THREAD_EVENT will be placed on the main thread whose handler is
*
* bgp_packet.c:bgp_process_packet()
*
* @param connection - The connection to register
*/
extern void bgp_reads_on(struct peer_connection *connection);
/**
* Turns off packet reading for a peer.
*
* After this function is called, any packets received on connection->fd
* will not be read by the I/O thread.
*
* After this function returns it becomes safe to perform socket actions on
* connection->fd.
*
* @param connection - The connection to register for
*/
extern void bgp_reads_off(struct peer_connection *connection);
#endif /* _FRR_BGP_IO_H */
|
