mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-10-31 10:56:49 +00:00
8fa7732f5d
Vectored writes are more efficient with a higher quantum. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* BGP I/O.
|
|
* Implements packet I/O in a pthread.
|
|
* Copyright (C) 2017 Cumulus Networks
|
|
* Quentin Young
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
|
|
* MA 02110-1301 USA
|
|
*/
|
|
|
|
#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"
|
|
|
|
/**
|
|
* 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 peer->obuf will be
|
|
* written to peer->fd until no more packets remain.
|
|
*
|
|
* Additionally, it becomes unsafe to perform socket actions on peer->fd.
|
|
*
|
|
* @param peer - peer to register
|
|
*/
|
|
extern void bgp_writes_on(struct peer *peer);
|
|
|
|
/**
|
|
* Turns off packet writing for a peer.
|
|
*
|
|
* After this function returns, packets placed on peer->obuf will not be
|
|
* written to peer->fd by the I/O thread.
|
|
*
|
|
* After this function returns it becomes safe to perform socket actions on
|
|
* peer->fd.
|
|
*
|
|
* @param peer - peer to deregister
|
|
* @param flush - as described
|
|
*/
|
|
extern void bgp_writes_off(struct peer *peer);
|
|
|
|
/**
|
|
* Turns on packet reading for a peer.
|
|
*
|
|
* After this function is called, any packets received on peer->fd will be read
|
|
* and copied into the FIFO queue peer->ibuf.
|
|
*
|
|
* Additionally, it becomes unsafe to perform socket actions on peer->fd.
|
|
*
|
|
* Whenever one or more packets are placed onto peer->ibuf, a task of type
|
|
* THREAD_EVENT will be placed on the main thread whose handler is
|
|
*
|
|
* bgp_packet.c:bgp_process_packet()
|
|
*
|
|
* @param peer - peer to register
|
|
*/
|
|
extern void bgp_reads_on(struct peer *peer);
|
|
|
|
/**
|
|
* Turns off packet reading for a peer.
|
|
*
|
|
* After this function is called, any packets received on peer->fd will not be
|
|
* read by the I/O thread.
|
|
*
|
|
* After this function returns it becomes safe to perform socket actions on
|
|
* peer->fd.
|
|
*
|
|
* @param peer - peer to deregister
|
|
*/
|
|
extern void bgp_reads_off(struct peer *peer);
|
|
|
|
#endif /* _FRR_BGP_IO_H */
|