1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 5 * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 6 * Internet Initiative Japan, Inc (IIJ) 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #define IPCP_MAXCODE CODE_CODEREJ 34 35 #define TY_IPADDRS 1 36 #define TY_COMPPROTO 2 37 #define TY_IPADDR 3 38 39 /* Domain NameServer and NetBIOS NameServer options */ 40 41 #define TY_PRIMARY_DNS 129 42 #define TY_PRIMARY_NBNS 130 43 #define TY_SECONDARY_DNS 131 44 #define TY_SECONDARY_NBNS 132 45 #define TY_ADJUST_NS 119 /* subtract from NS val for REJECT bit */ 46 47 struct ipcp { 48 struct fsm fsm; /* The finite state machine */ 49 50 struct { 51 struct { 52 int slots; /* Maximum VJ slots */ 53 unsigned slotcomp : 1; /* Slot compression */ 54 unsigned neg : 2; /* VJ negotiation */ 55 } vj; 56 57 struct ncprange my_range; /* MYADDR spec */ 58 struct in_addr netmask; /* Iface netmask (unused by most OSs) */ 59 struct ncprange peer_range; /* HISADDR spec */ 60 struct iplist peer_list; /* Ranges of HISADDR values */ 61 62 struct in_addr TriggerAddress; /* Address to suggest in REQ */ 63 unsigned HaveTriggerAddress : 1; /* Trigger address specified */ 64 65 struct { 66 struct in_addr dns[2]; /* DNS addresses offered */ 67 unsigned dns_neg : 2; /* dns negotiation */ 68 struct in_addr nbns[2]; /* NetBIOS NS addresses offered */ 69 } ns; 70 71 struct fsm_retry fsm; /* frequency to resend requests */ 72 } cfg; 73 74 struct { 75 struct slcompress cslc; /* VJ state */ 76 struct slstat slstat; /* VJ statistics */ 77 } vj; 78 79 struct { 80 unsigned resolver : 1; /* Found resolv.conf ? */ 81 unsigned writable : 1; /* Can write resolv.conf ? */ 82 struct in_addr dns[2]; /* Current DNS addresses */ 83 char *resolv; /* Contents of resolv.conf */ 84 char *resolv_nons; /* Contents of resolv.conf without ns */ 85 } ns; 86 87 unsigned heis1172 : 1; /* True if he is speaking rfc1172 */ 88 89 unsigned peer_req : 1; /* Any TY_IPADDR REQs from the peer ? */ 90 struct in_addr peer_ip; /* IP address he's willing to use */ 91 u_int32_t peer_compproto; /* VJ params he's willing to use */ 92 93 struct in_addr ifmask; /* Interface netmask */ 94 95 struct in_addr my_ip; /* IP address I'm willing to use */ 96 u_int32_t my_compproto; /* VJ params I'm willing to use */ 97 98 u_int32_t peer_reject; /* Request codes rejected by peer */ 99 u_int32_t my_reject; /* Request codes I have rejected */ 100 101 struct pppThroughput throughput; /* throughput statistics */ 102 struct mqueue Queue[3]; /* Output packet queues */ 103 }; 104 105 #define fsm2ipcp(fp) (fp->proto == PROTO_IPCP ? (struct ipcp *)fp : NULL) 106 #define IPCP_QUEUES(ipcp) (sizeof ipcp->Queue / sizeof ipcp->Queue[0]) 107 108 struct bundle; 109 struct link; 110 struct cmdargs; 111 struct iface_addr; 112 113 extern void ipcp_Init(struct ipcp *, struct bundle *, struct link *, 114 const struct fsm_parent *); 115 extern void ipcp_Destroy(struct ipcp *); 116 extern void ipcp_Setup(struct ipcp *, u_int32_t); 117 extern void ipcp_SetLink(struct ipcp *, struct link *); 118 119 extern int ipcp_Show(struct cmdargs const *); 120 extern struct mbuf *ipcp_Input(struct bundle *, struct link *, struct mbuf *); 121 extern void ipcp_AddInOctets(struct ipcp *, int); 122 extern void ipcp_AddOutOctets(struct ipcp *, int); 123 extern int ipcp_UseHisIPaddr(struct bundle *, struct in_addr); 124 extern int ipcp_UseHisaddr(struct bundle *, const char *, int); 125 extern int ipcp_vjset(struct cmdargs const *); 126 extern void ipcp_IfaceAddrAdded(struct ipcp *, const struct iface_addr *); 127 extern void ipcp_IfaceAddrDeleted(struct ipcp *, const struct iface_addr *); 128 extern int ipcp_InterfaceUp(struct ipcp *); 129 extern struct in_addr addr2mask(struct in_addr); 130 extern int ipcp_WriteDNS(struct ipcp *); 131 extern void ipcp_RestoreDNS(struct ipcp *); 132 extern void ipcp_LoadDNS(struct ipcp *); 133 extern size_t ipcp_QueueLen(struct ipcp *); 134 extern int ipcp_PushPacket(struct ipcp *, struct link *); 135