1/* 2 * Defines for synchronous PPP/Cisco link level subroutines. 3 * 4 * Copyright (C) 1994 Cronyx Ltd. 5 * Author: Serge Vakulenko, <vak@zebub.msk.su> 6 * 7 * This software is distributed with NO WARRANTIES, not even the implied 8 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 9 * 10 * Authors grant any other persons or organizations permission to use 11 * or modify this software as long as this message is kept with the software, 12 * all derivative works or modified versions. 13 * 14 * Version 1.7, Wed Jun 7 22:12:02 MSD 1995 15 * 16 * 17 * 18 */ 19 20#ifndef _SYNCPPP_H_ 21#define _SYNCPPP_H_ 1 22 23#ifdef __KERNEL__ 24struct slcp { 25 u16 state; /* state machine */ 26 u32 magic; /* local magic number */ 27 u_char echoid; /* id of last keepalive echo request */ 28 u_char confid; /* id of last configuration request */ 29}; 30 31struct sipcp { 32 u16 state; /* state machine */ 33 u_char confid; /* id of last configuration request */ 34}; 35 36struct sppp 37{ 38 struct sppp * pp_next; /* next interface in keepalive list */ 39 u32 pp_flags; /* use Cisco protocol instead of PPP */ 40 u16 pp_alivecnt; /* keepalive packets counter */ 41 u16 pp_loopcnt; /* loopback detection counter */ 42 u32 pp_seq; /* local sequence number */ 43 u32 pp_rseq; /* remote sequence number */ 44 struct slcp lcp; /* LCP params */ 45 struct sipcp ipcp; /* IPCP params */ 46 u32 ibytes,obytes; /* Bytes in/out */ 47 u32 ipkts,opkts; /* Packets in/out */ 48 struct timer_list pp_timer; 49 struct net_device *pp_if; 50 char pp_link_state; /* Link status */ 51 spinlock_t lock; 52}; 53 54struct ppp_device 55{ 56 struct net_device *dev; /* Network device pointer */ 57 struct sppp sppp; /* Synchronous PPP */ 58}; 59 60static inline struct sppp *sppp_of(struct net_device *dev) 61{ 62 struct ppp_device **ppp = dev->priv; 63 BUG_ON((*ppp)->dev != dev); 64 return &(*ppp)->sppp; 65} 66 67#define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 68#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 69#define PP_TIMO 0x04 /* cp_timeout routine active */ 70#define PP_DEBUG 0x08 71 72#define PPP_MTU 1500 /* max. transmit unit */ 73 74#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */ 75#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */ 76#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */ 77#define LCP_STATE_OPENED 3 /* LCP state: opened */ 78 79#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */ 80#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */ 81#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */ 82#define IPCP_STATE_OPENED 3 /* IPCP state: opened */ 83 84#define SPPP_LINK_DOWN 0 /* link down - no keepalive */ 85#define SPPP_LINK_UP 1 /* link is up - keepalive ok */ 86 87void sppp_attach (struct ppp_device *pd); 88void sppp_detach (struct net_device *dev); 89int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); 90struct sk_buff *sppp_dequeue (struct net_device *dev); 91int sppp_isempty (struct net_device *dev); 92void sppp_flush (struct net_device *dev); 93int sppp_open (struct net_device *dev); 94int sppp_reopen (struct net_device *dev); 95int sppp_close (struct net_device *dev); 96#endif 97 98#define SPPPIOCCISCO (SIOCDEVPRIVATE) 99#define SPPPIOCPPP (SIOCDEVPRIVATE+1) 100#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2) 101#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3) 102#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4) 103 104#endif /* _SYNCPPP_H_ */ 105