text: /*
   * 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. 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.
   *
   * This file is part of the lwIP TCP/IP stack.
   *
   */
  
  #ifndef __LWIP_PPPAPI_H__
  #define __LWIP_PPPAPI_H__
  
  #include "interface/LwIp/src/include/lwip/opt.h"
  
  #if LWIP_PPP_API /* don't build if not configured for use in lwipopts.h */
  
  #include "lwip/sys.h"
  #include "lwip/netif.h"
  #include "netif/ppp/ppp.h"
  #if PPPOS_SUPPORT
  #include "netif/ppp/pppos.h"
  #endif /* PPPOS_SUPPORT */
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  	struct pppapi_msg_msg
  	{
  #if !LWIP_TCPIP_CORE_LOCKING
  		sys_sem_t sem;
  #endif /* !LWIP_TCPIP_CORE_LOCKING */
  		err_t err;
  		ppp_pcb *ppp;
  		union
  		{
  			struct
  			{
  				u8_t authtype;
  				const char *user;
  				const char *passwd;
  			}setauth;
  #if PPP_NOTIFY_PHASE
  			struct
  			{
  				ppp_notify_phase_cb_fn notify_phase_cb;
  			}setnotifyphasecb;
  #endif /* PPP_NOTIFY_PHASE */
  #if PPPOS_SUPPORT
  			struct
  			{
  				struct netif *pppif;
  				pppos_output_cb_fn output_cb;
  				ppp_link_status_cb_fn link_status_cb;
  				void *ctx_cb;
  			}serialcreate;
  #endif /* PPPOS_SUPPORT */
  #if PPPOE_SUPPORT
  			struct
  			{
  				struct netif *pppif;
  				struct netif *ethif;
  				const char *service_name;
  				const char *concentrator_name;
  				ppp_link_status_cb_fn link_status_cb;
  				void *ctx_cb;
  			}ethernetcreate;
  #endif /* PPPOE_SUPPORT */
  #if PPPOL2TP_SUPPORT
  			struct
  			{
  				struct netif *pppif;
  				struct netif *netif;
  				ip_addr_t *ipaddr;
  				u16_t port;
  #if PPPOL2TP_AUTH_SUPPORT
  				const u8_t *secret;
  				u8_t secret_len;
  #endif /* PPPOL2TP_AUTH_SUPPORT */
  				ppp_link_status_cb_fn link_status_cb;
  				void *ctx_cb;
  			}l2tpcreate;
  #endif /* PPPOL2TP_SUPPORT */
  			struct
  			{
  				u16_t holdoff;
  			}connect;
  #if PPP_SERVER
  			struct
  			{
  				struct ppp_addrs *addrs;
  			}listen;
  #endif /* PPP_SERVER */
  			struct
  			{
  				u8_t nocarrier;
  			}close;
  			struct
  			{
  				u8_t cmd;
  				void *arg;
  			}ioctl;
  		}msg;
  	};
  
  	struct pppapi_msg
  	{
  		void (* function)(struct pppapi_msg_msg *msg);
  		struct pppapi_msg_msg msg;
  	};
  
  	/* API for application */
  	void pppapi_set_default(ppp_pcb *pcb);
  	void pppapi_set_auth(ppp_pcb *pcb, u8_t authtype, const char *user, const char *passwd);
  #if PPP_NOTIFY_PHASE
  	void pppapi_set_notify_phase_callback(ppp_pcb *pcb, ppp_notify_phase_cb_fn notify_phase_cb);
  #endif /* PPP_NOTIFY_PHASE */
  #if PPPOS_SUPPORT
  	ppp_pcb *pppapi_pppos_create(struct netif *pppif, pppos_output_cb_fn output_cb, ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
  #endif /* PPPOS_SUPPORT */
  #if PPPOE_SUPPORT
  	ppp_pcb *pppapi_pppoe_create(struct netif *pppif, struct netif *ethif, const char *service_name,
  			const char *concentrator_name, ppp_link_status_cb_fn link_status_cb,
  			void *ctx_cb);
  #endif /* PPPOE_SUPPORT */
  #if PPPOL2TP_SUPPORT
  	ppp_pcb *pppapi_pppol2tp_create(struct netif *pppif, struct netif *netif, ip_addr_t *ipaddr, u16_t port,
  			const u8_t *secret, u8_t secret_len,
  			ppp_link_status_cb_fn link_status_cb, void *ctx_cb);
  #endif /* PPPOL2TP_SUPPORT */
  	err_t pppapi_connect(ppp_pcb *pcb, u16_t holdoff);
  #if PPP_SERVER
  	err_t pppapi_listen(ppp_pcb *pcb, struct ppp_addrs *addrs);
  #endif /* PPP_SERVER */
  	err_t pppapi_close(ppp_pcb *pcb, u8_t nocarrier);
  	err_t pppapi_free(ppp_pcb *pcb);
  	err_t pppapi_ioctl(ppp_pcb *pcb, u8_t cmd, void *arg);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* LWIP_PPP_API */
  
  #endif /* __LWIP_PPPAPI_H__ */
  
  