| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | spinlock_t lock; |
| 52 | }; |
| 53 | |
| 54 | struct ppp_device |
| 55 | { |
| 56 | struct net_device *dev; /* Network device pointer */ |
| 57 | struct sppp sppp; /* Synchronous PPP */ |
| 58 | }; |
| 59 | |
| 60 | static 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 | |
| 87 | void sppp_attach (struct ppp_device *pd); |
| 88 | void sppp_detach (struct net_device *dev); |
| 89 | void sppp_input (struct net_device *dev, struct sk_buff *m); |
| 90 | int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); |
| 91 | struct sk_buff *sppp_dequeue (struct net_device *dev); |
| 92 | int sppp_isempty (struct net_device *dev); |
| 93 | void sppp_flush (struct net_device *dev); |
| 94 | int sppp_open (struct net_device *dev); |
| 95 | int sppp_reopen (struct net_device *dev); |
| 96 | int sppp_close (struct net_device *dev); |
| 97 | #endif |
| 98 | |
| 99 | #define SPPPIOCCISCO (SIOCDEVPRIVATE) |
| 100 | #define SPPPIOCPPP (SIOCDEVPRIVATE+1) |
| 101 | #define SPPPIOCDEBUG (SIOCDEVPRIVATE+2) |
| 102 | #define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3) |
| 103 | #define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4) |
| 104 | |
| 105 | #endif /* _SYNCPPP_H_ */ |