File content as of revision 0:7a9cde4dbf0b:

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "W5500.h"
#include "Socket.h"
#include "md5.h"






#define __DEF_PPP_DBG__ // debug message for [Phase] and [Network Init]
//#define __DEF_PPP_DBG1__ // debug message for checking 'Txbuf overflow' and etc.
//#define __DEF_PPP_DBG2__ // debug received and send packet.



//PPPoE retry count value
//#define     PPP_MAX_RETRYRECV_COUNT     50
#define     PPP_MAX_RETRYSEND_COUNT     5
#define     PPP_MAX_RETRYRECV_COUNT     32
#define     PPP_MAX_RETRY_COUNT         5
// PPPoE EtherType definition
#define     PPPoE_DISCOVERY     0x8863
#define     PPPoE_SESSION       0x8864

// PPPoE Frame field definition
#define     PPPoE_VER_TYPE      0x11      

// PPPoE Code definition
#define     PPPoE_PADI          0x09            
#define     PPPoE_PADO          0x07
#define     PPPoE_PADR          0x19
#define     PPPoE_PADS          0x65
#define     PPPoE_PADT          0xa7
#define     PPPoE_SESSIONDATA   0x00

// PPPoE Discovery Tag type definition
#define     PPPoED_END_OF_LIST          0x0000
#define     PPPoED_SERVICE_NAME         0x0101
#define     PPPoED_AC_NAME              0x0102
#define     PPPoED_HOST_UNIQ            0x0103
#define     PPPoED_AC_COOKIE            0x0104
#define     PPPoED_VENDER_SPECIFIC      0x0105  

// PPPoE Protocol definition
#define     PPPoE_LCP           0xC021
#define     PPPoE_PAP           0xC023
#define     PPPoE_CHAP          0xC223
#define     PPPoE_IPCP          0x8021

// PPPoE Protocol Code definition
    // LCP using 0x01 ~ 0x0b
    // PAP using 0x01 ~ 0x03
    // IPCP using 0x01 ~ 0x07
#define     PPP_CONFIG_REQ      0x01        
#define     PPP_CONFIG_ACK      0x02
#define     PPP_CONFIG_NAK      0x03
#define     PPP_CONFIG_REJ      0x04
#define     PPP_TERM_REQ        0x05
#define     PPP_TERM_ACK        0x06
#define     PPP_CODE_REJ        0x07
#define     PPP_PROT_REJ        0x08
#define     PPP_ECHO_REQ        0x09
#define     PPP_ECHO_REP        0x0a
#define     PPP_DIS_REQ         0x0b

// PPPoE LCP Type definition
#define     LCP_MRU             0x01
#define     LCP_AUTH            0x03
#define     LCP_MAGICNUM        0x05
#define     LCP_PROTOCOMP       0x07
#define     LCP_ADDRCOMP        0x08        

// PPPoE CHAP Algorithm
#define     MD5                 0x05 
#define     MS_CHAP             0x80
#define     MS_CHAP_V2          0x81

// PPPoE stage control flags
#define   FLAG_DISCOVERY_RCV_PADO   0x0001
#define   FLAG_DISCOVERY_RCV_PADS   0x0002
#define   FLAG_LCP_CR_RCV           0x0004
#define   FLAG_LCP_CR_SNT           0x0008
#define   FLAG_PAP_ACK_RCV          0x0010
#define   FLAG_CHAP_SUC_RCV         0x0020
#define   FLAG_IPCP_CR_SNT          0x0040
#define   FLAG_IPCP_CR_RCV          0x0080
#define   FLAG_IPCP_NAK_RCV         0x0100
#define   FLAG_TERMINATION_ACK_RCV  0x0200
#define   FLAG_TERMINATION_REQ_RCV  0x0400
#define   FLAG_PADO_SERVICENAME     0x0800

/*
// PPPoE Field value definition 
// -> not used.     
#define     PPPoE_SESSION_ID    0x0000
#define     LCP_MAGICNUM_VAL    0x00112299
*/

// Logical variable definition
#define     PPP_SUCCESS         1
//#define       PPP_FAIL            0
#define     PPP_RETRY           2

#define     OPTMSG_LEN          80
#define     CV_HV_LEN           16


#define     PPPoE_FAILED        0


#define PPP_FRAME_SIZE      128
#define PPP_RXFRAME_SIZE    1514



class PPPOEClient 
{
public:
    PPPOEClient();
    void set_pppinfo(uint8_t * nas_mac, uint8_t * ppp_ip, uint16_t nas_sessionid);
    void ppp_send(void);
    void ppp_recv( uint16_t received_len );
    void do_discovery(void);
    void do_lcp(void);
    void do_lcp_echo(void);
    uint8_t do_lcp_terminate(void);
    void do_pap(void);
    void do_ipcp(void);
    uint8_t ppp_start(uint8_t * pppoe_buf);
    //void delay_ms(uint32_t time);
    


private:
    WIZnet_Chip* eth;
    
};

// PPPoE message
typedef struct _PPPMSG
{
    uint8_t dst_mac[6];
    uint8_t src_mac[6];
    uint16_t ether_type;            // 0x8863 : PPPoE Discovery, 0x8864 : PPPoE Session
    uint8_t version_type;       // 4-bit 'version' = 0001, 4-bit 'type' = 0001 default
    uint8_t frame_code;
    uint16_t session_id;
    uint16_t len;
}PPPMSG;   

// PPPoE Protocol
typedef struct _PROTOCOL
{
    uint16_t protocol;
    uint8_t pcode;
    uint8_t id;
    uint16_t len;
    uint8_t opt[OPTMSG_LEN];
}PROTOCOL;

// PPPoE Start function
uint8_t ppp_start(uint8_t * pppoe_buf);
//PPPoE termination function
uint8_t do_lcp_terminate(void);