kopia lustrzana https://github.com/F5OEO/tstools
93 wiersze
2.2 KiB
C
93 wiersze
2.2 KiB
C
/* ethernet.h */
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/*
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* Routines for taking ethernet packets apart.
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the MPEG TS, PS and ES tools.
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*
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* The Initial Developer of the Original Code is Amino Communications Ltd.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Richard Watts, Kynesim <rrw@kynesim.co.uk>
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*
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* ***** END LICENSE BLOCK *****
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*/
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#ifndef _ethernet_h
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#define _ethernet_h
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#include <stdio.h>
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#include <stdlib.h>
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#include "compat.h"
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#include "pcap.h"
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typedef struct ethernet_vlan_info_s
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{
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char cfi;
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char pcp;
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int vid;
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} ethernet_vlan_info_t;
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typedef struct ethernet_packet_s
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{
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// Source address.
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uint8_t src_addr[6];
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// Destination ddress.
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uint8_t dst_addr[6];
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// 0x5DC is the maximum frame length in 802.3
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#define ETHERNET_MAY_BE_IP(typeorlen) ((typeorlen) == 0x800 || (typeorlen) <= 0x5DC)
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#define ETHERNET_TYPE_IP 0x800
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// Type
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uint16_t typeorlen;
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#define ETHERNET_VLANS_MAX 2
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int vlan_count;
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ethernet_vlan_info_t vlans[ETHERNET_VLANS_MAX];
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// Checksum if present. Note that pcap doesn't include checksums.
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uint32_t checksum;
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} ethernet_packet_t;
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#define ETHERNET_ERR_PKT_TOO_SHORT (-1)
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#define ETHERNET_ERR_TOO_MANY_VLANS (-2)
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/*
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* \param out_st OUT Index into data at which ethernet payload starts.
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* \param out_len OUT Length of the ethernet payload.
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* \return 0 on success, -1 on failure.
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*
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*/
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int ethernet_packet_from_pcap(pcaprec_hdr_t *hdr,
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const uint8_t *data,
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const uint32_t len,
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ethernet_packet_t *pkt,
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uint32_t *out_st,
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uint32_t *out_len);
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#endif
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/* End file */
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