if_sppp.h revision 1.4
1 /* $NetBSD: if_sppp.h,v 1.4 1999/04/04 06:57:03 explorer Exp $ */ 2 3 /* 4 * Defines for synchronous PPP/Cisco link level subroutines. 5 * 6 * Copyright (C) 1994 Cronyx Ltd. 7 * Author: Serge Vakulenko, <vak (at) cronyx.ru> 8 * 9 * Heavily revamped to conform to RFC 1661. 10 * Copyright (C) 1997, Joerg Wunsch. 11 * 12 * This software is distributed with NO WARRANTIES, not even the implied 13 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 14 * 15 * Authors grant any other persons or organizations permission to use 16 * or modify this software as long as this message is kept with the software, 17 * all derivative works or modified versions. 18 * 19 * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995 20 * 21 * From: if_sppp.h,v 1.8 1997/10/11 11:25:20 joerg Exp 22 * 23 * From: Id: if_sppp.h,v 1.7 1998/12/01 20:20:19 hm Exp 24 */ 25 26 #ifndef _NET_IF_HDLC_H_ 27 #define _NET_IF_HDLC_H_ 1 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 47 struct sipcp { 48 u_long opts; /* IPCP options to send (bitfield) */ 49 u_int flags; 50 #define IPCP_HISADDR_SEEN 1 /* have seen his address already */ 51 #define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */ 52 #define IPCP_MYADDR_SEEN 4 /* have seen his address already */ 53 }; 54 55 #define AUTHNAMELEN 32 56 #define AUTHKEYLEN 16 57 58 struct sauth { 59 u_short proto; /* authentication protocol to use */ 60 u_short flags; 61 #define AUTHFLAG_NOCALLOUT 1 /* do not require authentication on */ 62 /* callouts */ 63 #define AUTHFLAG_NORECHALLENGE 2 /* do not re-challenge CHAP */ 64 u_char name[AUTHNAMELEN]; /* system identification name */ 65 u_char secret[AUTHKEYLEN]; /* secret password */ 66 u_char challenge[AUTHKEYLEN]; /* random challenge */ 67 }; 68 69 #define IDX_PAP 2 70 #define IDX_CHAP 3 71 72 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */ 73 74 /* 75 * Don't change the order of this. Ordering the phases this way allows 76 * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to 77 * know whether LCP is up. 78 */ 79 enum ppp_phase { 80 PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE, 81 PHASE_AUTHENTICATE, PHASE_NETWORK 82 }; 83 84 struct sppp { 85 /* NB: pp_if _must_ be first */ 86 struct ifnet pp_if; /* network interface data */ 87 struct ifqueue pp_fastq; /* fast output queue */ 88 struct ifqueue pp_cpq; /* PPP control protocol queue */ 89 struct sppp *pp_next; /* next interface in keepalive list */ 90 u_int pp_flags; /* use Cisco protocol instead of PPP */ 91 u_short pp_alivecnt; /* keepalive packets counter */ 92 u_short pp_loopcnt; /* loopback detection counter */ 93 u_long pp_seq; /* local sequence number */ 94 u_long pp_rseq; /* remote sequence number */ 95 enum ppp_phase pp_phase; /* phase we're currently in */ 96 int state[IDX_COUNT]; /* state machine */ 97 u_char confid[IDX_COUNT]; /* id of last configuration request */ 98 int rst_counter[IDX_COUNT]; /* restart counter */ 99 int fail_counter[IDX_COUNT]; /* negotiation failure counter */ 100 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 101 struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */ 102 struct callout_handle pap_my_to_ch; /* PAP needs one more... */ 103 #endif 104 struct slcp lcp; /* LCP params */ 105 struct sipcp ipcp; /* IPCP params */ 106 struct sauth myauth; /* auth params, i'm peer */ 107 struct sauth hisauth; /* auth params, i'm authenticator */ 108 /* 109 * These functions are filled in by sppp_attach(), and are 110 * expected to be used by the lower layer (hardware) drivers 111 * in order to communicate the (un)availability of the 112 * communication link. Lower layer drivers that are always 113 * ready to communicate (like hardware HDLC) can shortcut 114 * pp_up from pp_tls, and pp_down from pp_tlf. 115 */ 116 void (*pp_up)(struct sppp *sp); 117 void (*pp_down)(struct sppp *sp); 118 /* 119 * These functions need to be filled in by the lower layer 120 * (hardware) drivers if they request notification from the 121 * PPP layer whether the link is actually required. They 122 * correspond to the tls and tlf actions. 123 */ 124 void (*pp_tls)(struct sppp *sp); 125 void (*pp_tlf)(struct sppp *sp); 126 /* 127 * These (optional) functions may be filled by the hardware 128 * driver if any notification of established connections 129 * (currently: IPCP up) is desired (pp_con) or any internal 130 * state change of the interface state machine should be 131 * signaled for monitoring purposes (pp_chg). 132 */ 133 void (*pp_con)(struct sppp *sp); 134 void (*pp_chg)(struct sppp *sp, int new_state); 135 }; 136 137 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 138 #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 139 /* 0x04 was PP_TIMO */ 140 #define PP_CALLIN 0x08 /* we are being called */ 141 #define PP_NEEDAUTH 0x10 /* remote requested authentication */ 142 143 144 #define PP_MTU 1500 /* default/minimal MRU */ 145 #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */ 146 147 /* 148 * Definitions to pass struct sppp data down into the kernel using the 149 * SIOC[SG]IFGENERIC ioctl interface. 150 * 151 * In order to use this, create a struct spppreq, fill in the cmd 152 * field with SPPPIOGDEFS, and put the address of this structure into 153 * the ifr_data portion of a struct ifreq. Pass this struct to a 154 * SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOCDEFS, 155 * modify the defs field as desired, and pass the struct ifreq now 156 * to a SIOCSIFGENERIC ioctl. 157 */ 158 159 #define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp))) 160 #define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp))) 161 162 struct spppreq { 163 int cmd; 164 struct sppp defs; 165 }; 166 167 #if (defined(__FreeBSD_version) && __FreeBSD_version < 300000) || \ 168 (defined(__FreeBSD__) && __FreeBSD__ < 3) || \ 169 defined(__NetBSD__) || defined (__OpenBSD__) 170 #define SIOCSIFGENERIC _IOW('i', 57, struct ifreq) /* generic IF set op */ 171 #define SIOCGIFGENERIC _IOWR('i', 58, struct ifreq) /* generic IF get op */ 172 #endif 173 174 #if defined(KERNEL) || defined(_KERNEL) 175 void sppp_attach (struct ifnet *ifp); 176 void sppp_detach (struct ifnet *ifp); 177 void sppp_input (struct ifnet *ifp, struct mbuf *m); 178 #if defined(__FreeBSD_version) && __FreeBSD_version >= 300003 179 int sppp_ioctl(struct ifnet *ifp, u_long cmd, void *data); 180 #else 181 int sppp_ioctl(struct ifnet *ifp, int cmd, void *data); 182 #endif 183 struct mbuf *sppp_dequeue (struct ifnet *ifp); 184 struct mbuf *sppp_pick(struct ifnet *ifp); 185 int sppp_isempty (struct ifnet *ifp); 186 void sppp_flush (struct ifnet *ifp); 187 #endif 188 189 #endif /* _NET_IF_HDLC_H_ */ 190
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