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 int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
90 struct sk_buff *sppp_dequeue (struct net_device *dev);
91 int sppp_isempty (struct net_device *dev);
92 void sppp_flush (struct net_device *dev);
93 int sppp_open (struct net_device *dev);
94 int sppp_reopen (struct net_device *dev);
95 int 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
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