307 lines
9.8 KiB
C
307 lines
9.8 KiB
C
/*
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* Defines for synchronous PPP/Cisco link level subroutines.
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*
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* Copyright (C) 1994 Cronyx Ltd.
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* Author: Serge Vakulenko, <vak@zebub.msk.su>
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*
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* This software is distributed with NO WARRANTIES, not even the implied
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* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Authors grant any other persons or organizations permission to use
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* or modify this software as long as this message is kept with the software,
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* all derivative works or modified versions.
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*
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* Version 1.7, Wed Jun 7 22:12:02 MSD 1995
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*
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* Version 2.1, Wed Mar 26 10:03:00 EDT 2003
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*
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*
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*/
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/*
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*
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* Changes: v2.1 by David Rokhvarg <davidr@sangoma.com>
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*
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* Changed for use by Sangoma WANPIPE driver. Added MD5 algorithm
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* declarations.
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*
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*/
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#ifndef _SYNCPPP_H_
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#define _SYNCPPP_H_ 1
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#ifdef __KERNEL__
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#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
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#define PPP_UI 0x03 /* Unnumbered Information */
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#define PPP_IP 0x0021 /* Internet Protocol */
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#define PPP_ISO 0x0023 /* ISO OSI Protocol */
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#define PPP_XNS 0x0025 /* Xerox NS Protocol */
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#define PPP_IPX 0x002b /* Novell IPX Protocol */
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#define PPP_LCP 0xc021 /* Link Control Protocol */
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#define PPP_IPCP 0x8021 /* Internet Protocol Control Protocol */
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#define PPP_PAP 0xc023 /* Password Authentication Protocol */
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#define PPP_CHAP 0xc223 /* Challenge-Handshake Auth Protocol */
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struct slcp {
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u16 state; /* state machine */
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u32 magic; /* local magic number */
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u_char echoid; /* id of last keepalive echo request */
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u_char confid; /* id of last configuration request */
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u32 opts; /* LCP options to send (bitfield) */
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u32 mru; /* our max receive unit */
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u32 their_mru; /* their max receive unit */
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u32 protos; /* bitmask of protos that are started */
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/* restart max values, see RFC 1661 */
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int timeout;
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int max_terminate;
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int max_configure;
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int max_failure;
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};
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struct sipcp {
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u16 state; /* state machine */
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u_char confid; /* id of last configuration request */
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};
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#define IDX_LCP 0 /* idx into state table */
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#define IDX_IPCP 1 /* idx into state table */
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#define IDX_IPV6CP 2 /* idx into state table */
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#define AUTHNAMELEN 64
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#define AUTHKEYLEN 16
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struct sauth {
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u_short proto; /* authentication protocol to use */
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u_short flags;
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#define AUTHFLAG_NOCALLOUT 1 /* do not require authentication on */
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/* callouts */
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#define AUTHFLAG_NORECHALLENGE 2 /* do not re-challenge CHAP */
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u_char name[AUTHNAMELEN]; /* system identification name */
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u_char secret[AUTHKEYLEN]; /* secret password */
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u_char challenge[AUTHKEYLEN]; /* random challenge */
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};
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#define IDX_PAP 3
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#define IDX_CHAP 4
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#define IDX_COUNT (IDX_CHAP + 1) /* bump this when adding cp's! */
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/*
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* Don't change the order of this. Ordering the phases this way allows
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* for a comparision of ``pp_phase >= PHASE_AUTHENTICATE'' in order to
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* know whether LCP is up.
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*/
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enum ppp_phase {
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PHASE_DEAD, PHASE_ESTABLISH, PHASE_TERMINATE,
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PHASE_AUTHENTICATE, PHASE_NETWORK
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};
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#define PP_MTU 1500 /* default/minimal MRU */
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#define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
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/*
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* This is a cut down struct sppp (see below) that can easily be
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* exported to/ imported from userland without the need to include
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* dozens of kernel-internal header files. It is used by the
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* SPPPIO[GS]DEFS ioctl commands below.
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*/
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struct sppp_parms {
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enum ppp_phase pp_phase; /* phase we're currently in */
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int enable_vj; /* VJ header compression enabled */
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int enable_ipv6; /*
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* Enable IPv6 negotiations -- only
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* needed since each IPv4 i/f auto-
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* matically gets an IPv6 address
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* assigned, so we can't use this as
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* a decision.
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*/
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struct slcp lcp; /* LCP params */
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struct sipcp ipcp; /* IPCP params */
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struct sipcp ipv6cp; /* IPv6CP params */
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struct sauth myauth; /* auth params, i'm peer */
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struct sauth hisauth; /* auth params, i'm authenticator */
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};
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/*
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* Definitions to pass struct sppp_parms data down into the kernel
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* using the SIOC[SG]IFGENERIC ioctl interface.
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*
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* In order to use this, create a struct spppreq, fill in the cmd
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* field with SPPPIOGDEFS, and put the address of this structure into
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* the ifr_data portion of a struct ifreq. Pass this struct to a
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* SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOSDEFS,
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* modify the defs field as desired, and pass the struct ifreq now
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* to a SIOCSIFGENERIC ioctl.
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*/
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#define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) +\
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sizeof(struct sppp_parms)))
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#define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) +\
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sizeof(struct sppp_parms)))
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struct spppreq {
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int cmd;
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struct sppp_parms defs;
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};
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/* bits for pp_flags */
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#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
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/* 0x04 was PP_TIMO */
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#define PP_CALLIN 0x08 /* we are being called */
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#define PP_NEEDAUTH 0x10 /* remote requested authentication */
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struct sppp
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{
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struct sppp * pp_next; /* next interface in keepalive list */
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u32 pp_flags; /* use Cisco protocol instead of PPP */
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u16 pp_alivecnt; /* keepalive packets counter */
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u16 pp_loopcnt; /* loopback detection counter */
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//u32 pp_seq; /* local sequence number */
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//u32 pp_rseq; /* remote sequence number */
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struct slcp lcp; /* LCP params */
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struct sipcp ipcp; /* IPCP params */
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u32 ibytes,obytes; /* Bytes in/out */
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u32 ipkts,opkts; /* Packets in/out */
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struct timer_list pp_timer;
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struct net_device *pp_if;
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char pp_link_state; /* Link status */
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u32 pp_seq[IDX_COUNT]; /* local sequence number */
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u32 pp_rseq[IDX_COUNT]; /* remote sequence number */
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enum ppp_phase pp_phase; /* phase we're currently in */
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int state[IDX_COUNT]; /* state machine */
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u_char confid[IDX_COUNT]; /* id of last configuration request */
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int rst_counter[IDX_COUNT]; /* restart counter */
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int fail_counter[IDX_COUNT]; /* negotiation failure counter */
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int confflags; /* administrative configuration flags */
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#define CONF_ENABLE_VJ 0x01 /* VJ header compression enabled */
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#define CONF_ENABLE_IPV6 0x02 /* IPv6 administratively enabled */
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time_t pp_last_recv; /* time last packet has been received */
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time_t pp_last_sent; /* time last packet has been sent */
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struct sauth myauth; /* auth params, i'm peer */
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struct sauth hisauth; /* auth params, i'm authenticator */
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struct timer_list pp_auth_timer;
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u32 pp_auth_flags;
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unsigned char dynamic_ip;
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unsigned long local_ip;
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unsigned long remote_ip;
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unsigned char gateway;
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struct tq_struct sppp_task;
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unsigned long task_working;
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int dynamic_failures;
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unsigned char hwdevname[WAN_IFNAME_SZ+1];
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};
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struct ppp_device
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{
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struct net_device *dev; /* Network device pointer */
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struct sppp sppp; /* Synchronous PPP */
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};
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#include <linux/if_wanpipe_common.h>
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static inline struct sppp *sppp_of(netdevice_t *dev)
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{
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wanpipe_common_t *chan=wan_netif_priv(dev);
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struct ppp_device *pppdev=(struct ppp_device *)chan->prot_ptr;
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return &pppdev->sppp;
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}
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#if 0
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#define sppp_of(dev) \
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(& \
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((struct ppp_device *) \
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(\
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((wanpipe_common_t *)\
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((dev)->priv)\
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)->prot_ptr\
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)->sppp\
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)
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#endif
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#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
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#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
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#define PP_TIMO 0x04 /* cp_timeout routine active */
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#define PP_DEBUG 0x08
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#define PP_TIMO1 0x20 /* one of the authentication timeout routines is active */
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#define PPP_MTU 1500 /* max. transmit unit */
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#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */
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#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */
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#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */
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#define LCP_STATE_OPENED 3 /* LCP state: opened */
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#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */
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#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */
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#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */
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#define IPCP_STATE_OPENED 3 /* IPCP state: opened */
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#define SPPP_LINK_DOWN 0 /* link down - no keepalive */
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#define SPPP_LINK_UP 1 /* link is up - keepalive ok */
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void wp_sppp_attach (struct ppp_device *pd);
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void wp_sppp_detach (struct net_device *dev);
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void wp_sppp_input (struct net_device *dev, struct sk_buff *m);
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int wp_sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
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struct sk_buff *sppp_dequeue (struct net_device *dev);
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int sppp_isempty (struct net_device *dev);
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void sppp_flush (struct net_device *dev);
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int wp_sppp_open (struct net_device *dev);
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int wp_sppp_reopen (struct net_device *dev);
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int wp_sppp_close (struct net_device *dev);
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#ifndef wp_min
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#define wp_min(x,y) \
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({ unsigned int __x = (x); unsigned int __y = (y); __x < __y ? __x: __y; })
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#endif
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#ifndef wp_max
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#define wp_max(x,y) \
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({ unsigned int __x = (x); unsigned int __y = (y); __x > __y ? __x: __y; })
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#endif
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#endif
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#define SPPPIOCCISCO (SIOCDEVPRIVATE)
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#define SPPPIOCPPP (SIOCDEVPRIVATE+1)
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#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2)
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#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3)
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#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4)
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#define AUTHNAMELEN 64
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#define AUTHKEYLEN 16
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#include <asm/byteorder.h>
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#ifdef __BIG_ENDIAN
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#define WORDS_BIGENDIAN
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#endif
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typedef u32 UWORD32;
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typedef u32 UINT32;
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typedef u8 UINT8;
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typedef u16 UINT16;
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#define md5byte unsigned char
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struct wp_MD5Context {
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UWORD32 buf[4];
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UWORD32 bytes[2];
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UWORD32 in[16];
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};
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void wp_MD5Init(struct wp_MD5Context *context);
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void wp_MD5Update(struct wp_MD5Context *context, md5byte const *buf, unsigned len);
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void wp_MD5Final(unsigned char digest[16], struct wp_MD5Context *context);
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void wp_MD5Transform(UWORD32 buf[4], UWORD32 const in[16]);
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#endif /* _SYNCPPP_H_ */
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