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__ 24 struct 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 31 struct sipcp { 32 u16 state; /* state machine */ 33 u_char confid; /* id of last configuration request */ 34 }; 35 36 struct 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 }; 52 53 struct ppp_device 54 { 55 struct net_device *dev; /* Network device pointer */ 56 struct sppp sppp; /* Synchronous PPP */ 57 }; 58 59 #define sppp_of(dev) \ 60 (&((struct ppp_device *)(*(unsigned long *)((dev)->priv)))->sppp) 61 62 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 63 #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 64 #define PP_TIMO 0x04 /* cp_timeout routine active */ 65 #define PP_DEBUG 0x08 66 67 #define PPP_MTU 1500 /* max. transmit unit */ 68 69 #define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */ 70 #define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */ 71 #define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */ 72 #define LCP_STATE_OPENED 3 /* LCP state: opened */ 73 74 #define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */ 75 #define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */ 76 #define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */ 77 #define IPCP_STATE_OPENED 3 /* IPCP state: opened */ 78 79 #define SPPP_LINK_DOWN 0 /* link down - no keepalive */ 80 #define SPPP_LINK_UP 1 /* link is up - keepalive ok */ 81 82 void sppp_attach (struct ppp_device *pd); 83 void sppp_detach (struct net_device *dev); 84 void sppp_input (struct net_device *dev, struct sk_buff *m); 85 int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); 86 struct sk_buff *sppp_dequeue (struct net_device *dev); 87 int sppp_isempty (struct net_device *dev); 88 void sppp_flush (struct net_device *dev); 89 int sppp_open (struct net_device *dev); 90 int sppp_reopen (struct net_device *dev); 91 int sppp_close (struct net_device *dev); 92 #endif 93 94 #define SPPPIOCCISCO (SIOCDEVPRIVATE) 95 #define SPPPIOCPPP (SIOCDEVPRIVATE+1) 96 #define SPPPIOCDEBUG (SIOCDEVPRIVATE+2) 97 #define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3) 98 #define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4) 99 100 #endif /* _SYNCPPP_H_ */ 101