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#ifndef PPP_FSM_H
#define PPP_FSM_H
#include "list.h"
typedef enum {FSM_Initial=0,FSM_Starting,FSM_Closed,FSM_Stopped,FSM_Closing,FSM_Stopping,FSM_Req_Sent,FSM_Ack_Rcvd,FSM_Ack_Sent,FSM_Opened} FSM_STATE;
/*
* CP (LCP, IPCP, etc.) codes.
*/
#define CONFREQ 1 /* Configuration Request */
#define CONFACK 2 /* Configuration Ack */
#define CONFNAK 3 /* Configuration Nak */
#define CONFREJ 4 /* Configuration Reject */
#define TERMREQ 5 /* Termination Request */
#define TERMACK 6 /* Termination Ack */
#define CODEREJ 7 /* Code Reject */
#define ECHOREQ 9 /* Echo Request */
#define ECHOREP 10 /* Echo Reply */
struct ppp_hdr_t;
struct lcp_options_t
{
int mtu;
int mru;
int accomp; // 0 - disabled, 1 - enable, 2 - allow, disabled, 3 - allow,enabled
int pcomp; // 0 - disabled, 1 - enable, 2 - allow, disabled, 3 - allow,enabled
int auth[3]; // 0 - none, 1 - pap, 2 - eap, 3 - mschap
// negotiated options;
int neg_mru;
int neg_mtu;
int neg_accomp; // -1 - rejected
int neg_pcomp;
int neg_auth;
};
struct ppp_layer_t
{
struct list_head entry;
struct ppp_layer_t *lower;
struct ppp_layer_t *upper;
int proto;
struct ppp_t *ppp;
FSM_STATE fsm_state;
union
{
struct lcp_options_t lcp;
}options;
struct triton_timer_t restart_timer;
int restart_counter;
int max_terminate;
int max_configure;
int max_failure;
int seq;
int recv_id;
int magic_num;
int opt_restart:1;
int opt_passive:1;
//fsm handling
void (*layer_up)(struct ppp_layer_t*);
void (*layer_down)(struct ppp_layer_t*);
void (*layer_started)(struct ppp_layer_t*);
void (*layer_finished)(struct ppp_layer_t*);
void (*send_conf_req)(struct ppp_layer_t*);
void (*send_conf_ack)(struct ppp_layer_t*);
void (*send_conf_nak)(struct ppp_layer_t*);
void (*send_conf_rej)(struct ppp_layer_t*);
void (*recv)(struct ppp_layer_t*,struct ppp_hdr_t*);
};
void ppp_fsm_init(struct ppp_layer_t*);
void ppp_fsm_recv(struct ppp_layer_t*);
void ppp_fsm_lower_up(struct ppp_layer_t *layer);
void ppp_fsm_lower_down(struct ppp_layer_t *layer);
void ppp_fsm_open(struct ppp_layer_t *layer);
void ppp_fsm_close(struct ppp_layer_t *layer);
void ppp_fsm_timeout0(struct ppp_layer_t *layer);
void ppp_fsm_timeout1(struct ppp_layer_t *layer);
void ppp_fsm_recv_conf_req_good(struct ppp_layer_t *layer);
void ppp_fsm_recv_conf_req_bad(struct ppp_layer_t *layer);
void ppp_fsm_recv_conf_ack(struct ppp_layer_t *layer);
void ppp_fsm_recv_conf_rej(struct ppp_layer_t *layer);
void ppp_fsm_recv_term_req(struct ppp_layer_t *layer);
void ppp_fsm_recv_term_ack(struct ppp_layer_t *layer);
void ppp_fsm_recv_unk(struct ppp_layer_t *layer);
void ppp_fsm_recv_code_rej_bad(struct ppp_layer_t *layer);
void ppp_fsm_recv_echo(struct ppp_layer_t *layer);
#endif
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