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suricata/src/decode-vlan.h

33 lines
877 B
C

/* Copyright (c) 2009, 2010 Open Information Security Foundation */
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/**
* \file
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* \author Breno Silva <breno.silva@gmail.com>
*/
#ifndef __DECODE_VLAN_H__
#define __DECODE_VLAN_H__
/** Vlan type */
#define ETHERNET_TYPE_VLAN 0x8100
/** Vlan macros to access Vlan priority, Vlan CFI and VID */
#define GET_VLAN_PRIORITY(vlanh) ((ntohs((vlanh)->vlan_cfi) & 0xe000) >> 13)
#define GET_VLAN_CFI(vlanh) ((ntohs((vlanh)->vlan_cfi) & 0x0100) >> 12)
#define GET_VLAN_ID(vlanh) ((uint16_t)(ntohs((vlanh)->vlan_cfi) & 0x0FFF))
#define GET_VLAN_PROTO(vlanh) ((ntohs((vlanh)->protocol)))
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/** Vlan header struct */
typedef struct VLANHdr_ {
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uint16_t vlan_cfi;
uint16_t protocol; /**< protocol field */
} VLANHdr;
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/** VLAN header length */
#define VLAN_HEADER_LEN 4
void DecodeVLANRegisterTests(void);
#endif /* __DECODE_VLAN_H__ */