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1da177e4 LT |
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 */ | |
1da177e4 LT |
46 | struct timer_list pp_timer; |
47 | struct net_device *pp_if; | |
48 | char pp_link_state; /* Link status */ | |
49 | spinlock_t lock; | |
50 | }; | |
51 | ||
52 | struct ppp_device | |
53 | { | |
54 | struct net_device *dev; /* Network device pointer */ | |
55 | struct sppp sppp; /* Synchronous PPP */ | |
56 | }; | |
57 | ||
58 | static inline struct sppp *sppp_of(struct net_device *dev) | |
59 | { | |
4951704b | 60 | struct ppp_device **ppp = dev->ml_priv; |
1da177e4 LT |
61 | BUG_ON((*ppp)->dev != dev); |
62 | return &(*ppp)->sppp; | |
63 | } | |
64 | ||
65 | #define PP_KEEPALIVE 0x01 /* use keepalive protocol */ | |
66 | #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ | |
67 | #define PP_TIMO 0x04 /* cp_timeout routine active */ | |
68 | #define PP_DEBUG 0x08 | |
69 | ||
70 | #define PPP_MTU 1500 /* max. transmit unit */ | |
71 | ||
72 | #define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */ | |
73 | #define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */ | |
74 | #define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */ | |
75 | #define LCP_STATE_OPENED 3 /* LCP state: opened */ | |
76 | ||
77 | #define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */ | |
78 | #define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */ | |
79 | #define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */ | |
80 | #define IPCP_STATE_OPENED 3 /* IPCP state: opened */ | |
81 | ||
82 | #define SPPP_LINK_DOWN 0 /* link down - no keepalive */ | |
83 | #define SPPP_LINK_UP 1 /* link is up - keepalive ok */ | |
84 | ||
85 | void sppp_attach (struct ppp_device *pd); | |
86 | void sppp_detach (struct net_device *dev); | |
1da177e4 LT |
87 | int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd); |
88 | struct sk_buff *sppp_dequeue (struct net_device *dev); | |
89 | int sppp_isempty (struct net_device *dev); | |
90 | void sppp_flush (struct net_device *dev); | |
91 | int sppp_open (struct net_device *dev); | |
92 | int sppp_reopen (struct net_device *dev); | |
93 | int sppp_close (struct net_device *dev); | |
94 | #endif | |
95 | ||
96 | #define SPPPIOCCISCO (SIOCDEVPRIVATE) | |
97 | #define SPPPIOCPPP (SIOCDEVPRIVATE+1) | |
98 | #define SPPPIOCDEBUG (SIOCDEVPRIVATE+2) | |
99 | #define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3) | |
100 | #define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4) | |
101 | ||
102 | #endif /* _SYNCPPP_H_ */ |