if_sppp.h revision 1.3
1 /* 2 * Defines for synchronous PPP/Cisco link level subroutines. 3 * 4 * Copyright (C) 1994 Cronyx Ltd. 5 * Author: Serge Vakulenko, <vak (at) cronyx.ru> 6 * 7 * Heavily revamped to conform to RFC 1661. 8 * Copyright (C) 1997, Joerg Wunsch. 9 * 10 * This software is distributed with NO WARRANTIES, not even the implied 11 * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 * 13 * Authors grant any other persons or organizations permission to use 14 * or modify this software as long as this message is kept with the software, 15 * all derivative works or modified versions. 16 * 17 * From: Version 2.0, Fri Oct 6 20:39:21 MSK 1995 18 * 19 * From: if_sppp.h,v 1.8 1997/10/11 11:25:20 joerg Exp 20 * 21 * $Id: if_sppp.h,v 1.3 1999/04/04 06:07:56 explorer Exp $ 22 */ 23 24 #ifndef _NET_IF_HDLC_H_ 25 #define _NET_IF_HDLC_H_ 1 26 27 #define IDX_LCP 0 /* idx into state table */ 28 29 struct slcp { 30 u_long opts; /* LCP options to send (bitfield) */ 31 u_long magic; /* local magic number */ 32 u_long mru; /* our max receive unit */ 33 u_long their_mru; /* their max receive unit */ 34 u_long protos; /* bitmask of protos that are started */ 35 u_char echoid; /* id of last keepalive echo request */ 36 /* restart max values, see RFC 1661 */ 37 int timeout; 38 int max_terminate; 39 int max_configure; 40 int max_failure; 41 }; 42 43 #define IDX_IPCP 1 /* idx into state table */ 44 45 struct sipcp { 46 u_long opts; /* IPCP options to send (bitfield) */ 47 u_int flags; 48 #define IPCP_HISADDR_SEEN 1 /* have seen his address already */ 49 #define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */ 50 #define IPCP_MYADDR_SEEN 4 /* have seen his address already */ 51 }; 52 53 #define AUTHNAMELEN 32 54 #define AUTHKEYLEN 16 55 56 struct sauth { 57 u_short proto; /* authentication protocol to use */ 58 u_short flags; 59 #define AUTHFLAG_NOCALLOUT 1 /* do not require authentication on */ 60 /* callouts */ 61 #define AUTHFLAG_NORECHALLENGE 2 /* do not re-challenge CHAP */ 62 u_char name[AUTHNAMELEN]; /* system identification name */ 63 u_char secret[AUTHKEYLEN]; /* secret password */ 64 u_char challenge[AUTHKEYLEN]; /* random challenge */ 65 }; 66 67 #define IDX_PAP 2 68 #define IDX_CHAP 3 69 70 #define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */ 71 72 /* 73 * Don't change the order of this. Ordering the phases this way allows 74 * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to 75 * know whether LCP is up. 76 */ 77 enum ppp_phase { 78 PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE, 79 PHASE_AUTHENTICATE, PHASE_NETWORK 80 }; 81 82 struct sppp { 83 /* NB: pp_if _must_ be first */ 84 struct ifnet pp_if; /* network interface data */ 85 struct ifqueue pp_fastq; /* fast output queue */ 86 struct ifqueue pp_cpq; /* PPP control protocol queue */ 87 struct sppp *pp_next; /* next interface in keepalive list */ 88 u_int pp_flags; /* use Cisco protocol instead of PPP */ 89 u_short pp_alivecnt; /* keepalive packets counter */ 90 u_short pp_loopcnt; /* loopback detection counter */ 91 u_long pp_seq; /* local sequence number */ 92 u_long pp_rseq; /* remote sequence number */ 93 enum ppp_phase pp_phase; /* phase we're currently in */ 94 int state[IDX_COUNT]; /* state machine */ 95 u_char confid[IDX_COUNT]; /* id of last configuration request */ 96 int rst_counter[IDX_COUNT]; /* restart counter */ 97 int fail_counter[IDX_COUNT]; /* negotiation failure counter */ 98 #if defined(__FreeBSD__) && __FreeBSD__ >= 3 99 struct callout_handle ch[IDX_COUNT]; /* per-proto and if callouts */ 100 struct callout_handle pap_my_to_ch; /* PAP needs one more... */ 101 #endif 102 struct slcp lcp; /* LCP params */ 103 struct sipcp ipcp; /* IPCP params */ 104 struct sauth myauth; /* auth params, i'm peer */ 105 struct sauth hisauth; /* auth params, i'm authenticator */ 106 /* 107 * These functions are filled in by sppp_attach(), and are 108 * expected to be used by the lower layer (hardware) drivers 109 * in order to communicate the (un)availability of the 110 * communication link. Lower layer drivers that are always 111 * ready to communicate (like hardware HDLC) can shortcut 112 * pp_up from pp_tls, and pp_down from pp_tlf. 113 */ 114 void (*pp_up)(struct sppp *sp); 115 void (*pp_down)(struct sppp *sp); 116 /* 117 * These functions need to be filled in by the lower layer 118 * (hardware) drivers if they request notification from the 119 * PPP layer whether the link is actually required. They 120 * correspond to the tls and tlf actions. 121 */ 122 void (*pp_tls)(struct sppp *sp); 123 void (*pp_tlf)(struct sppp *sp); 124 /* 125 * These (optional) functions may be filled by the hardware 126 * driver if any notification of established connections 127 * (currently: IPCP up) is desired (pp_con) or any internal 128 * state change of the interface state machine should be 129 * signaled for monitoring purposes (pp_chg). 130 */ 131 void (*pp_con)(struct sppp *sp); 132 void (*pp_chg)(struct sppp *sp, int new_state); 133 }; 134 135 #define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 136 #define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 137 /* 0x04 was PP_TIMO */ 138 #define PP_CALLIN 0x08 /* we are being called */ 139 #define PP_NEEDAUTH 0x10 /* remote requested authentication */ 140 141 142 #define PP_MTU 1500 /* default/minimal MRU */ 143 #define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */ 144 145 /* 146 * Definitions to pass struct sppp data down into the kernel using the 147 * SIOC[SG]IFGENERIC ioctl interface. 148 * 149 * In order to use this, create a struct spppreq, fill in the cmd 150 * field with SPPPIOGDEFS, and put the address of this structure into 151 * the ifr_data portion of a struct ifreq. Pass this struct to a 152 * SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOCDEFS, 153 * modify the defs field as desired, and pass the struct ifreq now 154 * to a SIOCSIFGENERIC ioctl. 155 */ 156 157 #define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp))) 158 #define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp))) 159 160 struct spppreq { 161 int cmd; 162 struct sppp defs; 163 }; 164 165 #if (defined(__FreeBSD_version) && __FreeBSD_version < 300000) || \ 166 (defined(__FreeBSD__) && __FreeBSD__ < 3) || \ 167 defined(__NetBSD__) || defined (__OpenBSD__) 168 #define SIOCSIFGENERIC _IOW('i', 57, struct ifreq) /* generic IF set op */ 169 #define SIOCGIFGENERIC _IOWR('i', 58, struct ifreq) /* generic IF get op */ 170 #endif 171 172 #if defined(KERNEL) || defined(_KERNEL) 173 void sppp_attach (struct ifnet *ifp); 174 void sppp_detach (struct ifnet *ifp); 175 void sppp_input (struct ifnet *ifp, struct mbuf *m); 176 #if defined(__FreeBSD_version) && __FreeBSD_version >= 300003 177 int sppp_ioctl(struct ifnet *ifp, u_long cmd, void *data); 178 #else 179 int sppp_ioctl(struct ifnet *ifp, int cmd, void *data); 180 #endif 181 struct mbuf *sppp_dequeue (struct ifnet *ifp); 182 struct mbuf *sppp_pick(struct ifnet *ifp); 183 int sppp_isempty (struct ifnet *ifp); 184 void sppp_flush (struct ifnet *ifp); 185 #endif 186 187 #endif /* _NET_IF_HDLC_H_ */ 188
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