usr.sbin/ppp/ipcp.h

   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: src/usr.sbin/ppp/ipcp.h,v 1.30.2.5 2002/09/01 02:12:27 brian Exp $
  29  * $DragonFly: src/usr.sbin/ppp/ipcp.h,v 1.2 2003/06/17 04:30:00 dillon Exp $
  30  */
  31
  32 #define IPCP_MAXCODE    CODE_CODEREJ
  33
  34 #define TY_IPADDRS      1
  35 #define TY_COMPPROTO    2
  36 #define TY_IPADDR       3
  37
  38 /* Domain NameServer and NetBIOS NameServer options */
  39
  40 #define TY_PRIMARY_DNS          129
  41 #define TY_PRIMARY_NBNS         130
  42 #define TY_SECONDARY_DNS        131
  43 #define TY_SECONDARY_NBNS       132
  44 #define TY_ADJUST_NS            119 /* subtract from NS val for REJECT bit */
  45
  46 struct ipcp {
  47   struct fsm fsm;                       /* The finite state machine */
  48
  49   struct {
  50     struct {
  51       int slots;                        /* Maximum VJ slots */
  52       unsigned slotcomp : 1;            /* Slot compression */
  53       unsigned neg : 2;                 /* VJ negotiation */
  54     } vj;
  55
  56     struct ncprange  my_range;          /* MYADDR spec */
  57     struct in_addr   netmask;           /* Iface netmask (unused by most OSs) */
  58     struct ncprange  peer_range;        /* HISADDR spec */
  59     struct iplist    peer_list;         /* Ranges of HISADDR values */
  60
  61     struct in_addr   TriggerAddress;    /* Address to suggest in REQ */
  62     unsigned HaveTriggerAddress : 1;    /* Trigger address specified */
  63
  64     struct {
  65       struct in_addr dns[2];            /* DNS addresses offered */
  66       unsigned dns_neg : 2;             /* dns negotiation */
  67       struct in_addr nbns[2];           /* NetBIOS NS addresses offered */
  68     } ns;
  69
  70     struct fsm_retry fsm;               /* frequency to resend requests */
  71   } cfg;
  72
  73   struct {
  74     struct slcompress cslc;             /* VJ state */
  75     struct slstat slstat;               /* VJ statistics */
  76   } vj;
  77
  78   struct {
  79     unsigned resolver : 1;              /* Found resolv.conf ? */
  80     unsigned writable : 1;              /* Can write resolv.conf ? */
  81     struct in_addr dns[2];              /* Current DNS addresses */
  82     char *resolv;                       /* Contents of resolv.conf */
  83     char *resolv_nons;                  /* Contents of resolv.conf without ns */
  84   } ns;
  85
  86   unsigned heis1172 : 1;                /* True if he is speaking rfc1172 */
  87
  88   unsigned peer_req : 1;                /* Any TY_IPADDR REQs from the peer ? */
  89   struct in_addr peer_ip;               /* IP address he's willing to use */
  90   u_int32_t peer_compproto;             /* VJ params he's willing to use */
  91
  92   struct in_addr ifmask;                /* Interface netmask */
  93
  94   struct in_addr my_ip;                 /* IP address I'm willing to use */
  95   u_int32_t my_compproto;               /* VJ params I'm willing to use */
  96
  97   u_int32_t peer_reject;                /* Request codes rejected by peer */
  98   u_int32_t my_reject;                  /* Request codes I have rejected */
  99
 100   struct pppThroughput throughput;      /* throughput statistics */
 101   struct mqueue Queue[3];               /* Output packet queues */
 102 };
 103
 104 #define fsm2ipcp(fp) (fp->proto == PROTO_IPCP ? (struct ipcp *)fp : NULL)
 105 #define IPCP_QUEUES(ipcp) (sizeof ipcp->Queue / sizeof ipcp->Queue[0])
 106
 107 struct bundle;
 108 struct link;
 109 struct cmdargs;
 110 struct iface_addr;
 111
 112 extern void ipcp_Init(struct ipcp *, struct bundle *, struct link *,
 113                       const struct fsm_parent *);
 114 extern void ipcp_Destroy(struct ipcp *);
 115 extern void ipcp_Setup(struct ipcp *, u_int32_t);
 116 extern void ipcp_SetLink(struct ipcp *, struct link *);
 117
 118 extern int  ipcp_Show(struct cmdargs const *);
 119 extern struct mbuf *ipcp_Input(struct bundle *, struct link *, struct mbuf *);
 120 extern void ipcp_AddInOctets(struct ipcp *, int);
 121 extern void ipcp_AddOutOctets(struct ipcp *, int);
 122 extern int  ipcp_UseHisIPaddr(struct bundle *, struct in_addr);
 123 extern int  ipcp_UseHisaddr(struct bundle *, const char *, int);
 124 extern int  ipcp_vjset(struct cmdargs const *);
 125 extern void ipcp_IfaceAddrAdded(struct ipcp *, const struct iface_addr *);
 126 extern void ipcp_IfaceAddrDeleted(struct ipcp *, const struct iface_addr *);
 127 extern int  ipcp_InterfaceUp(struct ipcp *);
 128 extern struct in_addr addr2mask(struct in_addr);
 129 extern int ipcp_WriteDNS(struct ipcp *);
 130 extern void ipcp_RestoreDNS(struct ipcp *);
 131 extern void ipcp_LoadDNS(struct ipcp *);
 132 extern size_t ipcp_QueueLen(struct ipcp *);
 133 extern int ipcp_PushPacket(struct ipcp *, struct link *);