if_sppp.h revision 26018
11823Sphk/* 245943Sobrien * Defines for synchronous PPP/Cisco link level subroutines. 31823Sphk * 41823Sphk * Copyright (C) 1994 Cronyx Ltd. 545763Sobrien * Author: Serge Vakulenko, <vak@cronyx.ru> 645763Sobrien * 718390Speter * Heavily revamped to conform to RFC 1661. 818390Speter * Copyright (C) 1997, Joerg Wunsch. 945299Sobrien * 102375Sbde * This software is distributed with NO WARRANTIES, not even the implied 1118390Speter * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 1218390Speter * 1345943Sobrien * Authors grant any other persons or organizations permission to use 1445943Sobrien * or modify this software as long as this message is kept with the software, 1545943Sobrien * all derivative works or modified versions. 1645943Sobrien * 1745943Sobrien * From: Version 1.7, Wed Jun 7 22:12:02 MSD 1995 1845943Sobrien * 1918390Speter * $Id: if_sppp.h,v 1.5 1997/05/19 22:03:08 joerg Exp $ 2045943Sobrien */ 2145943Sobrien 2245943Sobrien#ifndef _NET_IF_HDLC_H_ 2334229Speter#define _NET_IF_HDLC_H_ 1 2445299Sobrien 2545299Sobrien#define IDX_LCP 0 /* idx into state table */ 2645943Sobrien 2745299Sobrienstruct slcp { 2845299Sobrien u_long opts; /* LCP options to send (bitfield) */ 2945299Sobrien u_long magic; /* local magic number */ 3018390Speter u_long mru; /* our max receive unit */ 3145299Sobrien u_long their_mru; /* their max receive unit */ 3218390Speter u_long protos; /* bitmask of protos that are started */ 3318390Speter u_char echoid; /* id of last keepalive echo request */ 3445765Sobrien /* restart max values, see RFC 1661 */ 3518390Speter int timeout; 3618390Speter int max_terminate; 3718390Speter int max_configure; 3845299Sobrien int max_failure; 3945299Sobrien}; 4045299Sobrien 4145299Sobrien#define IDX_IPCP 1 /* idx into state table */ 4245943Sobrien 4345943Sobrienstruct sipcp { 4445943Sobrien u_long opts; /* IPCP options to send (bitfield) */ 4545943Sobrien u_int flags; 4645943Sobrien#define IPCP_HISADDR_SEEN 1 /* have seen his address already */ 4745943Sobrien#define IPCP_MYADDR_DYN 2 /* my address is dynamically assigned */ 4845943Sobrien}; 4945943Sobrien 5018390Speter#define IDX_COUNT (IDX_IPCP + 1) /* bump this when adding cp's! */ 5118390Speter 5245301Sobrien/* 5318390Speter * Don't change the order of this. Ordering the phases this way allows 5418390Speter * for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to 5516663Sjkh * know whether LCP is up. 5616663Sjkh */ 5745299Sobrienenum ppp_phase { 582375Sbde PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE, 592375Sbde PHASE_AUTHENTICATE, PHASE_NETWORK 6045299Sobrien}; 612375Sbde 622375Sbdestruct sppp { 632907Swollman /* NB: pp_if _must_ be first */ 6418390Speter struct ifnet pp_if; /* network interface data */ 6545299Sobrien struct ifqueue pp_fastq; /* fast output queue */ 66 struct ifqueue pp_cpq; /* PPP control protocol queue */ 67 struct sppp *pp_next; /* next interface in keepalive list */ 68 u_int pp_flags; /* use Cisco protocol instead of PPP */ 69 u_short pp_alivecnt; /* keepalive packets counter */ 70 u_short pp_loopcnt; /* loopback detection counter */ 71 u_long pp_seq; /* local sequence number */ 72 u_long pp_rseq; /* remote sequence number */ 73 enum ppp_phase pp_phase; /* phase we're currently in */ 74 int state[IDX_COUNT]; /* state machine */ 75 u_char confid[IDX_COUNT]; /* id of last configuration request */ 76 int rst_counter[IDX_COUNT]; /* restart counter */ 77 int fail_counter[IDX_COUNT]; /* negotiation failure counter */ 78 struct slcp lcp; /* LCP params */ 79 struct sipcp ipcp; /* IPCP params */ 80 /* 81 * These functions are filled in by sppp_attach(), and are 82 * expected to be used by the lower layer (hardware) drivers 83 * in order to communicate the (un)availability of the 84 * communication link. Lower layer drivers that are always 85 * ready to communicate (like hardware HDLC) can shortcut 86 * pp_up from pp_tls, and pp_down from pp_tlf. 87 */ 88 void (*pp_up)(struct sppp *sp); 89 void (*pp_down)(struct sppp *sp); 90 /* 91 * These functions need to be filled in by the lower layer 92 * (hardware) drivers if they request notification from the 93 * PPP layer whether the link is actually required. They 94 * correspond to the tls and tlf actions. 95 */ 96 void (*pp_tls)(struct sppp *sp); 97 void (*pp_tlf)(struct sppp *sp); 98}; 99 100#define PP_KEEPALIVE 0x01 /* use keepalive protocol */ 101#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */ 102 103#define PP_MTU 1500 /* default/minimal MRU */ 104#define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */ 105 106#ifdef KERNEL 107void sppp_attach (struct ifnet *ifp); 108void sppp_detach (struct ifnet *ifp); 109void sppp_input (struct ifnet *ifp, struct mbuf *m); 110int sppp_ioctl (struct ifnet *ifp, int cmd, void *data); 111struct mbuf *sppp_dequeue (struct ifnet *ifp); 112int sppp_isempty (struct ifnet *ifp); 113void sppp_flush (struct ifnet *ifp); 114#endif 115 116#endif /* _NET_IF_HDLC_H_ */ 117