src/common/txring.h
/* $Id$ */
/* Copyright (c) 2010 Dmitriy Gerasimov <gesser@demlabs.ru>
* Copyright (c) 2010 Aaron Turner.
* Copyright (c) 2023 Fred Klassen - AppNet Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright owners nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#ifdef HAVE_TX_RING
#include "defines.h"
#include "config.h"
#if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1
#include <net/ethernet.h> /* the L2 protocols */
#include <netpacket/packet.h>
#else
#include <asm/types.h>
#include <linux/if_ether.h> /* The L2 protocols */
#include <linux/if_packet.h>
#endif
#include <pthread.h>
struct txring_s {
pthread_t tx_send; /*Poll TX thread*/
volatile struct tpacket_hdr *tx_head; /* Pointer to mmaped memory with TX ring */
struct tpacket_req *treq; /* TX ring parametrs */
volatile unsigned int tx_index; /* TX index */
int tx_size; /* Size of mmaped TX ring */
};
typedef struct txring_s txring_t;
int txring_put(txring_t *txp, const void *data, size_t length);
txring_t *txring_init(int fd, unsigned int mtu);
#endif /* HAVE_TX_RING */