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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Defines for synchronous PPP/Cisco link level subroutines.
24: *
25: * Copyright (C) 1994 Cronyx Ltd.
26: * Author: Serge Vakulenko, <[email protected]>
27: *
28: * Heavily revamped to conform to RFC 1661.
29: * Copyright (C) 1997, Joerg Wunsch.
30: *
31: * This software is distributed with NO WARRANTIES, not even the implied
32: * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
33: *
34: * Authors grant any other persons or organizations permission to use
35: * or modify this software as long as this message is kept with the software,
36: * all derivative works or modified versions.
37: *
38: * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995
39: *
40: */
41:
42: #ifndef _NET_IF_SPPP_H_
43: #define _NET_IF_SPPP_H_ 1
44:
45: #define IDX_LCP 0 /* idx into state table */
46:
47: struct slcp {
48: u_long opts; /* LCP options to send (bitfield) */
49: u_long magic; /* local magic number */
50: u_long mru; /* our max receive unit */
51: u_long their_mru; /* their max receive unit */
52: u_long protos; /* bitmask of protos that are started */
53: u_char echoid; /* id of last keepalive echo request */
54: /* restart max values, see RFC 1661 */
55: int timeout;
56: int max_terminate;
57: int max_configure;
58: int max_failure;
59: };
60:
61: #define IDX_IPCP 1 /* idx into state table */
62:
63: struct sipcp {
64: u_long opts; /* IPCP options to send (bitfield) */
65: u_int flags;
66: #define IPCP_HISADDR_SEEN 1 /* have seen his address already */
67: #define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */
68: #define IPCP_MYADDR_SEEN 4 /* have seen his address already */
69: };
70:
71: #define AUTHNAMELEN 32
72: #define AUTHKEYLEN 16
73:
74: struct sauth {
75: u_short proto; /* authentication protocol to use */
76: u_short flags;
77: #define AUTHFLAG_NOCALLOUT 1 /* do not require authentication on */
78: /* callouts */
79: #define AUTHFLAG_NORECHALLENGE 2 /* do not re-challenge CHAP */
80: u_char name[AUTHNAMELEN]; /* system identification name */
81: u_char secret[AUTHKEYLEN]; /* secret password */
82: u_char challenge[AUTHKEYLEN]; /* random challenge */
83: };
84:
85: #define IDX_PAP 2
86: #define IDX_CHAP 3
87:
88: #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */
89:
90: /*
91: * Don't change the order of this. Ordering the phases this way allows
92: * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to
93: * know whether LCP is up.
94: */
95: enum ppp_phase {
96: PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE,
97: PHASE_AUTHENTICATE, PHASE_NETWORK
98: };
99:
100: struct sppp {
101: /* NB: pp_if _must_ be first */
102: struct ifnet pp_if; /* network interface data */
103: struct ifqueue pp_fastq; /* fast output queue */
104: struct ifqueue pp_cpq; /* PPP control protocol queue */
105: struct sppp *pp_next; /* next interface in keepalive list */
106: u_int pp_flags; /* use Cisco protocol instead of PPP */
107: u_short pp_alivecnt; /* keepalive packets counter */
108: u_short pp_loopcnt; /* loopback detection counter */
109: u_long pp_seq; /* local sequence number */
110: u_long pp_rseq; /* remote sequence number */
111: enum ppp_phase pp_phase; /* phase we're currently in */
112: int state[IDX_COUNT]; /* state machine */
113: u_char confid[IDX_COUNT]; /* id of last configuration request */
114: int rst_counter[IDX_COUNT]; /* restart counter */
115: int fail_counter[IDX_COUNT]; /* negotiation failure counter */
116: struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */
117: struct callout_handle pap_my_to_ch; /* PAP needs one more... */
118: struct slcp lcp; /* LCP params */
119: struct sipcp ipcp; /* IPCP params */
120: struct sauth myauth; /* auth params, i'm peer */
121: struct sauth hisauth; /* auth params, i'm authenticator */
122: /*
123: * These functions are filled in by sppp_attach(), and are
124: * expected to be used by the lower layer (hardware) drivers
125: * in order to communicate the (un)availability of the
126: * communication link. Lower layer drivers that are always
127: * ready to communicate (like hardware HDLC) can shortcut
128: * pp_up from pp_tls, and pp_down from pp_tlf.
129: */
130: void (*pp_up)(struct sppp *sp);
131: void (*pp_down)(struct sppp *sp);
132: /*
133: * These functions need to be filled in by the lower layer
134: * (hardware) drivers if they request notification from the
135: * PPP layer whether the link is actually required. They
136: * correspond to the tls and tlf actions.
137: */
138: void (*pp_tls)(struct sppp *sp);
139: void (*pp_tlf)(struct sppp *sp);
140: /*
141: * These (optional) functions may be filled by the hardware
142: * driver if any notification of established connections
143: * (currently: IPCP up) is desired (pp_con) or any internal
144: * state change of the interface state machine should be
145: * signaled for monitoring purposes (pp_chg).
146: */
147: void (*pp_con)(struct sppp *sp);
148: void (*pp_chg)(struct sppp *sp, int new_state);
149: /* These two fields are for use by the lower layer */
150: void *pp_lowerp;
151: int pp_loweri;
152: };
153:
154: #define PP_KEEPALIVE 0x01 /* use keepalive protocol */
155: #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
156: /* 0x04 was PP_TIMO */
157: #define PP_CALLIN 0x08 /* we are being called */
158: #define PP_NEEDAUTH 0x10 /* remote requested authentication */
159:
160:
161: #define PP_MTU 1500 /* default/minimal MRU */
162: #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
163:
164: /*
165: * Definitions to pass struct sppp data down into the kernel using the
166: * SIOC[SG]IFGENERIC ioctl interface.
167: *
168: * In order to use this, create a struct spppreq, fill in the cmd
169: * field with SPPPIOGDEFS, and put the address of this structure into
170: * the ifr_data portion of a struct ifreq. Pass this struct to a
171: * SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOCDEFS,
172: * modify the defs field as desired, and pass the struct ifreq now
173: * to a SIOCSIFGENERIC ioctl.
174: */
175:
176: #define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp)))
177: #define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp)))
178:
179: struct spppreq {
180: int cmd;
181: struct sppp defs;
182: };
183:
184: #ifdef KERNEL
185: void sppp_attach (struct ifnet *ifp);
186: void sppp_detach (struct ifnet *ifp);
187: void sppp_input (struct ifnet *ifp, struct mbuf *m);
188: int sppp_ioctl (struct ifnet *ifp, u_long cmd, void *data);
189: struct mbuf *sppp_dequeue (struct ifnet *ifp);
190: struct mbuf *sppp_pick(struct ifnet *ifp);
191: int sppp_isempty (struct ifnet *ifp);
192: void sppp_flush (struct ifnet *ifp);
193: #endif
194:
195: #endif /* _NET_IF_SPPP_H_ */
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