FreeBSD/Linux Kernel Cross Reference
sys/net/if_eco.h

     /*      $NetBSD: if_eco.h,v 1.8 2008/02/20 17:05:52 matt Exp $  */
     
     /*-
      * Copyright (c) 2001 Ben Harris
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _NET_IF_ECO_H_
    #define _NET_IF_ECO_H_
    
    #include <sys/callout.h>
    #include <sys/mbuf.h>
    #include <sys/queue.h>
    
    #include <net/if.h>
    
    /*
     * Econet headers come in two forms.  The initial frame of an exchange
     * has source and destination addresses, a control byte and a port.
     * Later frames just have source and destination addresses.
     *
     * Complete packets are generally passed around with the full header on,
     * even if this means assembling them from two separate frames.
     */
    #define ECO_ADDR_LEN    2       /* Length of an Econet address */
    #define ECO_HDR_LEN     6       /* Two addresses, a port and a control byte */
    #define ECO_SHDR_LEN    4       /* "Short" Econet header: just two addresses */
    /* #define ECO_MTU      8192     * Default MTU */
    #define ECO_IPMTU       1280    /* MTU for IP used by RISC iX */
    #define ECO_MTU         ECO_IPMTU
    
    struct eco_header {
            uint8_t eco_dhost[ECO_ADDR_LEN];
            uint8_t eco_shost[ECO_ADDR_LEN];
            uint8_t eco_control;
            uint8_t eco_port;
    } __packed;
    
    #define ECO_PORT_IMMEDIATE      0x00
    #define ECO_PORT_DSTAPE         0x54 /* DigitalServicesTapeStore */
    #define ECO_PORT_FS             0x99 /* FileServerCommand */
    #define ECO_PORT_BRIDGE         0x9C /* Bridge */
    #define ECO_PORT_PSINQREP       0x9E /* PrinterServerInquiryReply */
    #define ECO_PORT_PSINQ          0x9F /* PrinterServerInquiry */
    #define ECO_PORT_FAST           0xA0 /* SJ *FAST protocol */
    #define ECO_PORT_NEXNETFIND     0xA1 /* SJ Nexus net find reply port */
    #define ECO_PORT_FINDSRV        0xB0 /* FindServer */
    #define ECO_PORT_FINDSRVREP     0xB1 /* FindServerReply */
    #define ECO_PORT_TTXTCMD        0xB2 /* TeletextServerCommand */
    #define ECO_PORT_TTXTPAGE       0xB3 /* TeletextServerPage */
    #define ECO_PORT_OLDPSDATA      0xD0 /* OldPrinterServer */
    #define ECO_PORT_PSDATA         0xD1 /* PrinterServer */
    #define ECO_PORT_IP             0xD2 /* TCPIPProtocolSuite */
    #define ECO_PORT_SIDSLAVE       0xD3 /* SIDFrameSlave */
    #define ECO_PORT_SCROLLARAMA    0xD4 /* Scrollarama */
    #define ECO_PORT_PHONE          0xD5 /* Phone */
    #define ECO_PORT_BCASTCTL       0xD6 /* BroadcastControl */
    #define ECO_PORT_BCASTDATA      0xD7 /* BroadcastData */
    #define ECO_PORT_IMPLICENCE     0xD8 /* ImpressionLicenceChecker */
    #define ECO_PORT_SQUIRREL       0xD9 /* DigitalServicesSquirrel */
    #define ECO_PORT_SID2NDARY      0xDA /* SIDSecondary */
    #define ECO_PORT_SQUIRREL2      0xDB /* DigitalServicesSquirrel2 */
    #define ECO_PORT_DDCTL          0xDC /* DataDistributionControl */
    #define ECO_PORT_DDDATA         0xDD /* DataDistributionData */
    #define ECO_PORT_CLASSROM       0xDE /* ClassROM */
    #define ECO_PORT_PSCMD          0xDF /* PrinterSpoolerCommand */
    
    /* Control bytes for immediate operations. */
    #define ECO_CTL_PEEK            0x81
    #define ECO_CTL_POKE            0x82
    #define ECO_CTL_JSR             0x83
    #define ECO_CTL_USERPROC        0x84
    #define ECO_CTL_OSPROC          0x85
    #define ECO_CTL_HALT            0x86
    #define ECO_CTL_CONTINUE        0x87
    #define ECO_CTL_MACHINEPEEK     0x88
    #define ECO_CTL_GETREGISTERS    0x89
   
   /* Control bytes for IP */
   #define ECO_CTL_IP              0x81
   #define ECO_CTL_IPBCAST_REPLY   0x8E
   #define ECO_CTL_IPBCAST_REQUEST 0x8F
   #define ECO_CTL_ARP_REQUEST     0xA1
   #define ECO_CTL_ARP_REPLY       0xA2
   
   struct eco_arp {
           uint8_t ecar_spa[4];
           uint8_t ecar_tpa[4];
   };
   
   enum eco_state {
           ECO_UNKNOWN, ECO_IDLE, ECO_SCOUT_RCVD,
           ECO_SCOUT_SENT, ECO_DATA_SENT, ECO_IMMED_SENT,
           ECO_DONE
   };
   
   
   /*
    * This structure contains a packet that might need retransmitting,
    * together with a callout to trigger retransmission.  They're kept on
    * a per-interface list so they can be freed when an interface is
    * downed.
    */
   struct eco_retry {
           LIST_ENTRY(eco_retry)   er_link;
           struct  callout er_callout;
           struct  mbuf *er_packet;
           struct  ifnet *er_ifp;
   };
   
   /*
    * Common structure used to store state about an Econet interface.
    */
   struct ecocom {
           struct ifnet    ec_if;
           int     (*ec_claimwire)(struct ifnet *);
           void    (*ec_txframe)(struct ifnet *, struct mbuf *);
           enum eco_state  ec_state;
           struct mbuf     *ec_scout;
           struct mbuf     *ec_packet;
           LIST_HEAD(, eco_retry)  ec_retries;
   };
   
   #ifdef _KERNEL
   void    eco_ifattach(struct ifnet *, const uint8_t *);
   void    eco_ifdetach(struct ifnet *);
   int     eco_init(struct ifnet *);
   void    eco_stop(struct ifnet *, int);
   
   char    *eco_sprintf(const uint8_t *);
   
   struct mbuf *   eco_inputframe(struct ifnet *, struct mbuf *);
   void    eco_inputidle(struct ifnet *);
   #endif
   
   #endif /* !_NET_IF_ECO_H_ */

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