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#ifndef __PPPOE_H
#define __PPPOE_H
#include <linux/if.h>
#include <linux/if_pppox.h>
/* PPPoE codes */
#define CODE_PADI 0x09
#define CODE_PADO 0x07
#define CODE_PADR 0x19
#define CODE_PADS 0x65
#define CODE_PADT 0xA7
#define CODE_SESS 0x00
/* PPPoE Tags */
#define TAG_END_OF_LIST 0x0000
#define TAG_SERVICE_NAME 0x0101
#define TAG_AC_NAME 0x0102
#define TAG_HOST_UNIQ 0x0103
#define TAG_AC_COOKIE 0x0104
#define TAG_VENDOR_SPECIFIC 0x0105
#define TAG_RELAY_SESSION_ID 0x0110
#define TAG_SERVICE_NAME_ERROR 0x0201
#define TAG_AC_SYSTEM_ERROR 0x0202
#define TAG_GENERIC_ERROR 0x0203
/* Discovery phase states */
#define STATE_SENT_PADI 0
#define STATE_RECEIVED_PADO 1
#define STATE_SENT_PADR 2
#define STATE_SESSION 3
#define STATE_TERMINATED 4
/* Header size of a PPPoE packet */
#define PPPOE_OVERHEAD 6 /* type, code, session, length */
#define HDR_SIZE (sizeof(struct ethhdr) + PPPOE_OVERHEAD)
#define MAX_PPPOE_PAYLOAD (ETH_DATA_LEN - PPPOE_OVERHEAD)
#define MAX_PPPOE_MTU (MAX_PPPOE_PAYLOAD - 2)
#define MAX_SID 65534
struct pppoe_tag_t
{
struct list_head entry;
int type;
int len;
};
struct pppoe_packet_t
{
uint8_t src[ETH_ALEN];
uint8_t dst[ETH_ALEN];
int code;
uint16_t sid;
struct list_head tags;
};
#endif
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