1/*-
2 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
3 *          based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
4 *                           Internet Initiative Japan, Inc (IIJ)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#define	IPCP_MAXCODE	CODE_CODEREJ
32
33#define	TY_IPADDRS	1
34#define	TY_COMPPROTO	2
35#define	TY_IPADDR	3
36
37/* Domain NameServer and NetBIOS NameServer options */
38
39#define TY_PRIMARY_DNS		129
40#define TY_PRIMARY_NBNS		130
41#define TY_SECONDARY_DNS	131
42#define TY_SECONDARY_NBNS	132
43#define TY_ADJUST_NS		119 /* subtract from NS val for REJECT bit */
44
45struct ipcp {
46  struct fsm fsm;			/* The finite state machine */
47
48  struct {
49    struct {
50      int slots;			/* Maximum VJ slots */
51      unsigned slotcomp : 1;		/* Slot compression */
52      unsigned neg : 2;			/* VJ negotiation */
53    } vj;
54
55    struct ncprange  my_range;		/* MYADDR spec */
56    struct in_addr   netmask;		/* Iface netmask (unused by most OSs) */
57    struct ncprange  peer_range;	/* HISADDR spec */
58    struct iplist    peer_list;		/* Ranges of HISADDR values */
59
60    struct in_addr   TriggerAddress;	/* Address to suggest in REQ */
61    unsigned HaveTriggerAddress : 1;	/* Trigger address specified */
62
63    struct {
64      struct in_addr dns[2];		/* DNS addresses offered */
65      unsigned dns_neg : 2;		/* dns negotiation */
66      struct in_addr nbns[2];		/* NetBIOS NS addresses offered */
67    } ns;
68
69    struct fsm_retry fsm;		/* frequency to resend requests */
70  } cfg;
71
72  struct {
73    struct slcompress cslc;		/* VJ state */
74    struct slstat slstat;		/* VJ statistics */
75  } vj;
76
77  struct {
78    unsigned resolver : 1;		/* Found resolv.conf ? */
79    unsigned writable : 1;		/* Can write resolv.conf ? */
80    struct in_addr dns[2];		/* Current DNS addresses */
81    char *resolv;			/* Contents of resolv.conf */
82    char *resolv_nons;			/* Contents of resolv.conf without ns */
83  } ns;
84
85  unsigned heis1172 : 1;		/* True if he is speaking rfc1172 */
86
87  unsigned peer_req : 1;		/* Any TY_IPADDR REQs from the peer ? */
88  struct in_addr peer_ip;		/* IP address he's willing to use */
89  u_int32_t peer_compproto;		/* VJ params he's willing to use */
90
91  struct in_addr ifmask;		/* Interface netmask */
92
93  struct in_addr my_ip;			/* IP address I'm willing to use */
94  u_int32_t my_compproto;		/* VJ params I'm willing to use */
95
96  u_int32_t peer_reject;		/* Request codes rejected by peer */
97  u_int32_t my_reject;			/* Request codes I have rejected */
98
99  struct pppThroughput throughput;	/* throughput statistics */
100  struct mqueue Queue[3];		/* Output packet queues */
101};
102
103#define fsm2ipcp(fp) (fp->proto == PROTO_IPCP ? (struct ipcp *)fp : NULL)
104#define IPCP_QUEUES(ipcp) (sizeof ipcp->Queue / sizeof ipcp->Queue[0])
105
106struct bundle;
107struct link;
108struct cmdargs;
109struct iface_addr;
110
111extern void ipcp_Init(struct ipcp *, struct bundle *, struct link *,
112                      const struct fsm_parent *);
113extern void ipcp_Destroy(struct ipcp *);
114extern void ipcp_Setup(struct ipcp *, u_int32_t);
115extern void ipcp_SetLink(struct ipcp *, struct link *);
116
117extern int  ipcp_Show(struct cmdargs const *);
118extern struct mbuf *ipcp_Input(struct bundle *, struct link *, struct mbuf *);
119extern void ipcp_AddInOctets(struct ipcp *, int);
120extern void ipcp_AddOutOctets(struct ipcp *, int);
121extern int  ipcp_UseHisIPaddr(struct bundle *, struct in_addr);
122extern int  ipcp_UseHisaddr(struct bundle *, const char *, int);
123extern int  ipcp_vjset(struct cmdargs const *);
124extern void ipcp_IfaceAddrAdded(struct ipcp *, const struct iface_addr *);
125extern void ipcp_IfaceAddrDeleted(struct ipcp *, const struct iface_addr *);
126extern int  ipcp_InterfaceUp(struct ipcp *);
127extern struct in_addr addr2mask(struct in_addr);
128extern int ipcp_WriteDNS(struct ipcp *);
129extern void ipcp_RestoreDNS(struct ipcp *);
130extern void ipcp_LoadDNS(struct ipcp *);
131extern size_t ipcp_QueueLen(struct ipcp *);
132extern int ipcp_PushPacket(struct ipcp *, struct link *);
133