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#ifndef __PPPOE_H
#define __PPPOE_H
#include <pthread.h>
#include <linux/if.h>
#include <linux/if_pppox.h>
#include "rbtree.h"
#include "crypto.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 VENDOR_ADSL_FORUM 0xde9
#define SECRET_LENGTH 16
#define COOKIE_LENGTH 24
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;
};
struct pppoe_serv_t
{
struct list_head entry;
struct triton_context_t ctx;
struct rb_node node;
const struct ap_net *net;
uint8_t hwaddr[ETH_ALEN];
char *ifname;
int ifindex;
int parent_ifindex;
int vid;
struct triton_timer_t timer;
uint8_t secret[SECRET_LENGTH];
DES_key_schedule des_ks;
pthread_mutex_t lock;
int stopping:1;
unsigned int conn_cnt;
struct list_head conn_list;
struct list_head pado_list;
struct list_head padi_list;
int padi_cnt;
int padi_limit;
time_t last_padi_limit_warn;
};
extern int conf_verbose;
extern char *conf_service_name;
extern char *conf_ac_name;
extern char *conf_pado_delay;
extern unsigned int stat_starting;
extern unsigned int stat_active;
extern unsigned int stat_delayed_pado;
extern unsigned long stat_PADI_recv;
extern unsigned long stat_PADO_sent;
extern unsigned long stat_PADR_recv;
extern unsigned long stat_PADR_dup_recv;
extern unsigned long stat_PADS_sent;
extern unsigned long stat_PADI_drop;
extern unsigned long stat_filtered;
extern pthread_rwlock_t serv_lock;
extern struct list_head serv_list;
extern int disc_sock;
int mac_filter_check(const uint8_t *addr);
void pppoe_server_start(const char *intf, void *client);
void pppoe_server_stop(const char *intf);
void pppoe_serv_read(uint8_t *data);
void _server_stop(struct pppoe_serv_t *s);
void pppoe_disc_start(struct pppoe_serv_t *serv);
void pppoe_disc_stop(struct pppoe_serv_t *serv);
extern int pado_delay;
void dpado_check_next(int conn_cnt);
void dpado_check_prev(int conn_cnt);
int dpado_parse(const char *str);
struct rad_packet_t;
int tr101_send_access_request(struct pppoe_tag *tr101, struct rad_packet_t *pack);
int tr101_send_accounting_request(struct pppoe_tag *tr101, struct rad_packet_t *pack);
#endif
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