1 /* $NetBSD: if_spppvar.h,v 1.16 2009/10/05 21:27:36 dyoung Exp $ */ 2 3 #ifndef _NET_IF_SPPPVAR_H_ 4 #define _NET_IF_SPPPVAR_H_ 5 6 /* 7 * Defines for synchronous PPP/Cisco link level subroutines. 8 * 9 * Copyright (C) 1994 Cronyx Ltd. 10 * Author: Serge Vakulenko, <vak@cronyx.ru> 11 * 12 * Heavily revamped to conform to RFC 1661. 13 * Copyright (C) 1997, Joerg Wunsch. 14 * 15 * This software is distributed with NO WARRANTIES, not even the implied 16 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 17 * 18 * Authors grant any other persons or organizations permission to use 19 * or modify this software as long as this message is kept with the software, 20 * all derivative works or modified versions. 21 * 22 * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995 23 * 24 * From: if_sppp.h,v 1.8 1997/10/11 11:25:20 joerg Exp 25 * 26 * From: Id: if_sppp.h,v 1.7 1998/12/01 20:20:19 hm Exp 27 */ 28 29 #define IDX_LCP 0 /* idx into state table */ 30 31 struct slcp { 32 u_long opts; /* LCP options to send (bitfield) */ 33 u_long magic; /* local magic number */ 34 u_long mru; /* our max receive unit */ 35 u_long their_mru; /* their max receive unit */ 36 u_long protos; /* bitmask of protos that are started */ 37 u_char echoid; /* id of last keepalive echo request */ 38 /* restart max values, see RFC 1661 */ 39 int timeout; 40 int max_terminate; 41 int max_configure; 42 int max_failure; 43 }; 44 45 #define IDX_IPCP 1 /* idx into state table */ 46 #define IDX_IPV6CP 2 /* idx into state table */ 47 48 struct sipcp { 49 u_long opts; /* IPCP options to send (bitfield) */ 50 u_int flags; 51 #define IPCP_HISADDR_SEEN 1 /* have seen his address already */ 52 #define IPCP_MYADDR_SEEN 2 /* have a local address assigned already */ 53 #define IPCP_MYADDR_DYN 4 /* my address is dynamically assigned */ 54 #define IPCP_HISADDR_DYN 8 /* his address is dynamically assigned */ 55 #ifdef notdef 56 #define IPV6CP_MYIFID_DYN 2 /* my ifid is dynamically assigned */ 57 #endif 58 #define IPV6CP_MYIFID_SEEN 4 /* have seen his ifid already */ 59 uint32_t saved_hisaddr;/* if hisaddr (IPv4) is dynamic, save original one here, in network byte order */ 60 uint32_t req_hisaddr; /* remote address requested */ 61 uint32_t req_myaddr; /* local address requested */ 62 }; 63 64 struct sauth { 65 u_short proto; /* authentication protocol to use */ 66 u_short flags; 67 char *name; /* system identification name */ 68 char *secret; /* secret password */ 69 u_char name_len; /* no need to have a bigger size */ 70 u_char secret_len; /* because proto gives size in a byte */ 71 char challenge[16]; /* random challenge [don't change size! it's really hardcoded!] */ 72 }; 73 74 #define IDX_PAP 3 75 #define IDX_CHAP 4 76 77 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */ 78 79 struct sppp { 80 /* NB: pp_if _must_ be first */ 81 struct ifnet pp_if; /* network interface data */ 82 struct ifqueue pp_fastq; /* fast output queue */ 83 struct ifqueue pp_cpq; /* PPP control protocol queue */ 84 struct sppp *pp_next; /* next interface in keepalive list */ 85 u_int pp_flags; /* use Cisco protocol instead of PPP */ 86 u_int pp_framebytes; /* number of bytes added by (hardware) framing */ 87 u_int pp_alivecnt; /* keepalive packets counter */ 88 u_int pp_loopcnt; /* loopback detection counter */ 89 u_int pp_maxalive; /* number or echo req. w/o reply */ 90 u_long pp_seq[IDX_COUNT]; /* local sequence number */ 91 u_long pp_rseq[IDX_COUNT]; /* remote sequence number */ 92 uint64_t pp_saved_mtu; /* saved MTU value */ 93 time_t pp_last_receive; /* peer's last "sign of life" */ 94 time_t pp_max_noreceive; /* seconds since last receive before 95 we start to worry and send echo 96 requests */ 97 time_t pp_last_activity; /* second of last payload data s/r */ 98 time_t pp_idle_timeout; /* idle seconds before auto-disconnect, 99 * 0 = disabled */ 100 int pp_auth_failures; /* authorization failures */ 101 int pp_max_auth_fail; /* max. allowed authorization failures */ 102 int pp_phase; /* phase we're currently in */ 103 int query_dns; /* 1 if we want to know the dns addresses */ 104 uint32_t dns_addrs[2]; 105 int state[IDX_COUNT]; /* state machine */ 106 u_char confid[IDX_COUNT]; /* id of last configuration request */ 107 int rst_counter[IDX_COUNT]; /* restart counter */ 108 int fail_counter[IDX_COUNT]; /* negotiation failure counter */ 109 #if defined(__NetBSD__) 110 struct callout ch[IDX_COUNT]; /* per-proto and if callouts */ 111 struct callout pap_my_to_ch; /* PAP needs one more... */ 112 #endif 113 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 114 struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */ 115 struct callout_handle pap_my_to_ch; /* PAP needs one more... */ 116 #endif 117 struct slcp lcp; /* LCP params */ 118 struct sipcp ipcp; /* IPCP params */ 119 struct sipcp ipv6cp; /* IPv6CP 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 *); 131 void (*pp_down)(struct sppp *); 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 *); 139 void (*pp_tlf)(struct sppp *); 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 *); 148 void (*pp_chg)(struct sppp *, int); 149 }; 150 151 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 152 #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 153 /* 0x04 was PP_TIMO */ 154 #define PP_CALLIN 0x08 /* we are being called */ 155 #define PP_NEEDAUTH 0x10 /* remote requested authentication */ 156 #define PP_NOFRAMING 0x20 /* do not add/expect encapsulation 157 around PPP frames (i.e. the serial 158 HDLC like encapsulation, RFC1662) */ 159 160 161 #define PP_MTU 1500 /* default/minimal MRU */ 162 #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */ 163 164 #ifdef _KERNEL 165 void sppp_attach (struct ifnet *); 166 void sppp_detach (struct ifnet *); 167 void sppp_input (struct ifnet *, struct mbuf *); 168 int sppp_ioctl(struct ifnet *, u_long, void *); 169 struct mbuf *sppp_dequeue (struct ifnet *); 170 int sppp_isempty (struct ifnet *); 171 void sppp_flush (struct ifnet *); 172 #endif 173 #endif /* !_NET_IF_SPPPVAR_H_ */ 174