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/*
* Defines for synchronous PPP/Cisco link level subroutines.
*
* Copyright (C) 1994 Cronyx Ltd.
* Author: Serge Vakulenko, <vak@zebub.msk.su>
*
* This software is distributed with NO WARRANTIES, not even the implied
* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Authors grant any other persons or organizations permission to use
* or modify this software as long as this message is kept with the software,
* all derivative works or modified versions.
*
* Version 1.7, Wed Jun 7 22:12:02 MSD 1995
*
*
*
*/
#ifndef _SYNCPPP_H_
#define _SYNCPPP_H_ 1
#ifdef __KERNEL__
struct slcp {
u16 state; /* state machine */
u32 magic; /* local magic number */
u_char echoid; /* id of last keepalive echo request */
u_char confid; /* id of last configuration request */
};
struct sipcp {
u16 state; /* state machine */
u_char confid; /* id of last configuration request */
};
struct sppp
{
struct sppp * pp_next; /* next interface in keepalive list */
u32 pp_flags; /* use Cisco protocol instead of PPP */
u16 pp_alivecnt; /* keepalive packets counter */
u16 pp_loopcnt; /* loopback detection counter */
u32 pp_seq; /* local sequence number */
u32 pp_rseq; /* remote sequence number */
struct slcp lcp; /* LCP params */
struct sipcp ipcp; /* IPCP params */
struct timer_list pp_timer;
struct net_device *pp_if;
char pp_link_state; /* Link status */
spinlock_t lock;
};
struct ppp_device
{
struct net_device *dev; /* Network device pointer */
struct sppp sppp; /* Synchronous PPP */
};
static inline struct sppp *sppp_of(struct net_device *dev)
{
struct ppp_device **ppp = dev->ml_priv;
BUG_ON((*ppp)->dev != dev);
return &(*ppp)->sppp;
}
#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
#define PP_TIMO 0x04 /* cp_timeout routine active */
#define PP_DEBUG 0x08
#define PPP_MTU 1500 /* max. transmit unit */
#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */
#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */
#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */
#define LCP_STATE_OPENED 3 /* LCP state: opened */
#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */
#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */
#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */
#define IPCP_STATE_OPENED 3 /* IPCP state: opened */
#define SPPP_LINK_DOWN 0 /* link down - no keepalive */
#define SPPP_LINK_UP 1 /* link is up - keepalive ok */
void sppp_attach (struct ppp_device *pd);
void sppp_detach (struct net_device *dev);
int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
struct sk_buff *sppp_dequeue (struct net_device *dev);
int sppp_isempty (struct net_device *dev);
void sppp_flush (struct net_device *dev);
int sppp_open (struct net_device *dev);
int sppp_reopen (struct net_device *dev);
int sppp_close (struct net_device *dev);
#endif
#define SPPPIOCCISCO (SIOCDEVPRIVATE)
#define SPPPIOCPPP (SIOCDEVPRIVATE+1)
#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2)
#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3)
#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4)
#endif /* _SYNCPPP_H_ */
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