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nuttx-apps/netutils/pppd/ppp.h

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/****************************************************************************
* netutils/pppd/ppp.h
* PPP header file
*
* Version: 0.1 Original Version June 3, 2000
* (c)2000 Mycal Labs, All Rights Reserved
* Copyright (c) 2003, Mike Johnson, Mycal Labs, www.mycal.net
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mike Johnson/Mycal Labs
* www.mycal.net.
* 4. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __APPS_NETUTILS_PPPD_PPP_H
#define __APPS_NETUTILS_PPPD_PPP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include "netutils/chat.h"
#include "ppp_conf.h"
#include "ahdlc.h"
#include "lcp.h"
#include "ipcp.h"
#include "ppp_arch.h"
#ifdef CONFIG_NETUTILS_PPPD_PAP
# include "pap.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define CRC_GOOD_VALUE 0xf0b8
/* ppp_rx_status values */
#define PPP_RX_IDLE 0
#define PPP_READY 1
/* ppp flags */
#define PPP_ESCAPED 0x1
#define PPP_RX_READY 0x2
#define PPP_RX_ASYNC_MAP 0x4
#define PPP_TX_ASYNC_MAP 0x8
#define PPP_PFC 0x10
#define PPP_ACFC 0x20
/* Supported PPP Protocols */
#define LCP 0xc021
#define PAP 0xc023
#define IPCP 0x8021
#define IPV4 0x0021
/* LCP codes packet types */
#define CONF_REQ 0x1
#define CONF_ACK 0x2
#define CONF_NAK 0x3
#define CONF_REJ 0x4
#define TERM_REQ 0x5
#define TERM_ACK 0x6
#define PROT_REJ 0x8
#define ECHO_REQ 0x9
#define ECHO_REP 0xa
/****************************************************************************
* Public Types
****************************************************************************/
/* PPP context definition */
struct ppp_context_s
{
/* IP Buffer */
uint8_t ip_buf[PPP_RX_BUFFER_SIZE];
uint16_t ip_len;
/* Main status */
uint8_t ppp_flags;
uint16_t ppp_tx_mru;
uint8_t ppp_id;
/* IP timeout */
uint16_t ip_no_data_time;
/* Interfaces */
int if_fd;
uint8_t ifname[IFNAMSIZ];
/* Addresses */
struct in_addr local_ip;
#ifdef IPCP_GET_PEER_IP
struct in_addr peer_ip;
#endif
#ifdef IPCP_GET_PRI_DNS
struct in_addr pri_dns_addr;
#endif
#ifdef IPCP_GET_SEC_DNS
struct in_addr sec_dns_addr;
#endif
/* LCP */
uint8_t lcp_state;
uint8_t lcp_retry;
time_t lcp_prev_seconds;
#ifdef CONFIG_NETUTILS_PPPD_PAP
/* PAP */
uint8_t pap_state;
uint8_t pap_retry;
time_t pap_prev_seconds;
#endif /* CONFIG_NETUTILS_PPPD_PAP */
/* IPCP */
uint8_t ipcp_state;
uint8_t ipcp_retry;
time_t ipcp_prev_seconds;
/* AHDLC */
uint8_t ahdlc_rx_buffer[PPP_RX_BUFFER_SIZE];
uint16_t ahdlc_tx_crc; /* Running tx CRC */
uint16_t ahdlc_rx_crc; /* Running rx CRC */
uint16_t ahdlc_rx_count; /* Number of rx bytes processed, cur frame */
uint8_t ahdlc_flags; /* ahdlc state flags, see above */
uint8_t ahdlc_tx_offline;
/* Statistics counters */
#ifdef PPP_STATISTICS
uint16_t ahdlc_crc_error;
uint16_t ahdlc_rx_tobig_error;
uint32_t ppp_rx_frame_count;
uint32_t ppp_tx_frame_count;
#endif
/* Chat controls */
struct chat_ctl ctl;
/* PPPD Settings */
const struct pppd_settings_s *settings;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
void ppp_init(FAR struct ppp_context_s *ctx);
void ppp_connect(FAR struct ppp_context_s *ctx);
void ppp_reconnect(FAR struct ppp_context_s *ctx);
void ppp_send(FAR struct ppp_context_s *ctx);
void ppp_poll(FAR struct ppp_context_s *ctx);
void ppp_upcall(FAR struct ppp_context_s *ctx, uint16_t,
FAR uint8_t *, uint16_t);
uint16_t scan_packet(FAR struct ppp_context_s *ctx, uint16_t,
FAR const uint8_t *list, FAR uint8_t *buffer,
FAR uint8_t *options, uint16_t len);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __APPS_NETUTILS_PPPD_PPP_H */
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