FreeBSD/Linux Kernel Cross Reference
sys/net/if_spppvar.h
1 /* $NetBSD: if_spppvar.h,v 1.10 2003/09/03 20:48:46 martin Exp $ */
2
3 /*
4 * Defines for synchronous PPP/Cisco link level subroutines.
5 *
6 * Copyright (C) 1994 Cronyx Ltd.
7 * Author: Serge Vakulenko, <vak@cronyx.ru>
8 *
9 * Heavily revamped to conform to RFC 1661.
10 * Copyright (C) 1997, Joerg Wunsch.
11 *
12 * This software is distributed with NO WARRANTIES, not even the implied
13 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 *
15 * Authors grant any other persons or organizations permission to use
16 * or modify this software as long as this message is kept with the software,
17 * all derivative works or modified versions.
18 *
19 * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995
20 *
21 * From: if_sppp.h,v 1.8 1997/10/11 11:25:20 joerg Exp
22 *
23 * From: Id: if_sppp.h,v 1.7 1998/12/01 20:20:19 hm Exp
24 */
25
26 #define IDX_LCP 0 /* idx into state table */
27
28 struct slcp {
29 u_long opts; /* LCP options to send (bitfield) */
30 u_long magic; /* local magic number */
31 u_long mru; /* our max receive unit */
32 u_long their_mru; /* their max receive unit */
33 u_long protos; /* bitmask of protos that are started */
34 u_char echoid; /* id of last keepalive echo request */
35 /* restart max values, see RFC 1661 */
36 int timeout;
37 int max_terminate;
38 int max_configure;
39 int max_failure;
40 };
41
42 #define IDX_IPCP 1 /* idx into state table */
43 #define IDX_IPV6CP 2 /* idx into state table */
44
45 struct sipcp {
46 u_long opts; /* IPCP options to send (bitfield) */
47 u_int flags;
48 #define IPCP_HISADDR_SEEN 1 /* have seen his address already */
49 #define IPCP_MYADDR_SEEN 2 /* have a local address assigned already */
50 #define IPCP_MYADDR_DYN 4 /* my address is dynamically assigned */
51 #define IPCP_HISADDR_DYN 8 /* his address is dynamically assigned */
52 #ifdef notdef
53 #define IPV6CP_MYIFID_DYN 2 /* my ifid is dynamically assigned */
54 #endif
55 #define IPV6CP_MYIFID_SEEN 4 /* have seen his ifid already */
56 u_int32_t saved_hisaddr;/* if hisaddr (IPv4) is dynamic, save original one here, in network byte order */
57 u_int32_t req_hisaddr; /* remote address requested */
58 u_int32_t req_myaddr; /* local address requested */
59 };
60
61 struct sauth {
62 u_short proto; /* authentication protocol to use */
63 u_short flags;
64 char *name; /* system identification name */
65 char *secret; /* secret password */
66 u_char name_len; /* no need to have a bigger size */
67 u_char secret_len; /* because proto gives size in a byte */
68 char challenge[16]; /* random challenge [don't change size! it's really hardcoded!] */
69 };
70
71 #define IDX_PAP 3
72 #define IDX_CHAP 4
73
74 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */
75
76 struct sppp {
77 /* NB: pp_if _must_ be first */
78 struct ifnet pp_if; /* network interface data */
79 struct ifqueue pp_fastq; /* fast output queue */
80 struct ifqueue pp_cpq; /* PPP control protocol queue */
81 struct sppp *pp_next; /* next interface in keepalive list */
82 u_int pp_flags; /* use Cisco protocol instead of PPP */
83 u_int pp_framebytes; /* number of bytes added by (hardware) framing */
84 u_int pp_alivecnt; /* keepalive packets counter */
85 u_int pp_loopcnt; /* loopback detection counter */
86 u_int pp_maxalive; /* number or echo req. w/o reply */
87 u_long pp_seq[IDX_COUNT]; /* local sequence number */
88 u_long pp_rseq[IDX_COUNT]; /* remote sequence number */
89 u_quad_t pp_saved_mtu; /* saved MTU value */
90 time_t pp_last_receive; /* peer's last "sign of life" */
91 time_t pp_max_noreceive; /* seconds since last receive before
92 we start to worry and send echo
93 requests */
94 time_t pp_last_activity; /* second of last payload data s/r */
95 time_t pp_idle_timeout; /* idle seconds before auto-disconnect,
96 * 0 = disabled */
97 int pp_auth_failures; /* authorization failures */
98 int pp_max_auth_fail; /* max. allowed authorization failures */
99 int pp_phase; /* phase we're currently in */
100 int query_dns; /* 1 if we want to know the dns addresses */
101 u_int32_t dns_addrs[2];
102 int state[IDX_COUNT]; /* state machine */
103 u_char confid[IDX_COUNT]; /* id of last configuration request */
104 int rst_counter[IDX_COUNT]; /* restart counter */
105 int fail_counter[IDX_COUNT]; /* negotiation failure counter */
106 #if defined(__NetBSD__)
107 struct callout ch[IDX_COUNT]; /* per-proto and if callouts */
108 struct callout pap_my_to_ch; /* PAP needs one more... */
109 #endif
110 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
111 struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */
112 struct callout_handle pap_my_to_ch; /* PAP needs one more... */
113 #endif
114 struct slcp lcp; /* LCP params */
115 struct sipcp ipcp; /* IPCP params */
116 struct sipcp ipv6cp; /* IPv6CP params */
117 struct sauth myauth; /* auth params, i'm peer */
118 struct sauth hisauth; /* auth params, i'm authenticator */
119 /*
120 * These functions are filled in by sppp_attach(), and are
121 * expected to be used by the lower layer (hardware) drivers
122 * in order to communicate the (un)availability of the
123 * communication link. Lower layer drivers that are always
124 * ready to communicate (like hardware HDLC) can shortcut
125 * pp_up from pp_tls, and pp_down from pp_tlf.
126 */
127 void (*pp_up)(struct sppp *);
128 void (*pp_down)(struct sppp *);
129 /*
130 * These functions need to be filled in by the lower layer
131 * (hardware) drivers if they request notification from the
132 * PPP layer whether the link is actually required. They
133 * correspond to the tls and tlf actions.
134 */
135 void (*pp_tls)(struct sppp *);
136 void (*pp_tlf)(struct sppp *);
137 /*
138 * These (optional) functions may be filled by the hardware
139 * driver if any notification of established connections
140 * (currently: IPCP up) is desired (pp_con) or any internal
141 * state change of the interface state machine should be
142 * signaled for monitoring purposes (pp_chg).
143 */
144 void (*pp_con)(struct sppp *);
145 void (*pp_chg)(struct sppp *, int);
146 };
147
148 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */
149 #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
150 /* 0x04 was PP_TIMO */
151 #define PP_CALLIN 0x08 /* we are being called */
152 #define PP_NEEDAUTH 0x10 /* remote requested authentication */
153 #define PP_NOFRAMING 0x20 /* do not add/expect encapsulation
154 around PPP frames (i.e. the serial
155 HDLC like encapsulation, RFC1662) */
156
157
158 #define PP_MTU 1500 /* default/minimal MRU */
159 #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
160
161 #ifdef _KERNEL
162 void sppp_attach (struct ifnet *);
163 void sppp_detach (struct ifnet *);
164 void sppp_input (struct ifnet *, struct mbuf *);
165 int sppp_ioctl(struct ifnet *, u_long, void *);
166 struct mbuf *sppp_dequeue (struct ifnet *);
167 int sppp_isempty (struct ifnet *);
168 void sppp_flush (struct ifnet *);
169 #endif
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