llc.h

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/*
 * IEEE 802.2 User Interface SAPs for Linux, data structures and indicators.
 *
 * Copyright (c) 2001 by Jay Schulist <[email protected]>
 *
 * This program can be redistributed or modified under the terms of the
 * GNU General Public License as published by the Free Software Foundation.
 * This program is distributed without any warranty or implied warranty
 * of merchantability or fitness for a particular purpose.
 *
 * See the GNU General Public License for more details.
 */
#ifndef _UAPI__LINUX_LLC_H
#define _UAPI__LINUX_LLC_H

#include <linux/socket.h>

#define __LLC_SOCK_SIZE__ 16    /* sizeof(sockaddr_llc), word align. */
struct sockaddr_llc {
    __kernel_sa_family_t sllc_family; /* AF_LLC */
    __kernel_sa_family_t sllc_arphrd; /* ARPHRD_ETHER */
    unsigned char   sllc_test;
    unsigned char   sllc_xid;
    unsigned char   sllc_ua;    /* UA data, only for SOCK_STREAM. */
    unsigned char   sllc_sap;
    unsigned char   sllc_mac[IFHWADDRLEN];
    unsigned char   __pad[__LLC_SOCK_SIZE__ -
                  sizeof(__kernel_sa_family_t) * 2 -
                  sizeof(unsigned char) * 4 - IFHWADDRLEN];
};

/* sockopt definitions. */
enum llc_sockopts {
    LLC_OPT_UNKNOWN = 0,
    LLC_OPT_RETRY,      /* max retrans attempts. */
    LLC_OPT_SIZE,       /* max PDU size (octets). */
    LLC_OPT_ACK_TMR_EXP,    /* ack expire time (secs). */
    LLC_OPT_P_TMR_EXP,  /* pf cycle expire time (secs). */
    LLC_OPT_REJ_TMR_EXP,    /* rej sent expire time (secs). */
    LLC_OPT_BUSY_TMR_EXP,   /* busy state expire time (secs). */
    LLC_OPT_TX_WIN,     /* tx window size. */
    LLC_OPT_RX_WIN,     /* rx window size. */
    LLC_OPT_PKTINFO,    /* ancillary packet information. */
    LLC_OPT_MAX
};

#define LLC_OPT_MAX_RETRY    100
#define LLC_OPT_MAX_SIZE    4196
#define LLC_OPT_MAX_WIN      127
#define LLC_OPT_MAX_ACK_TMR_EXP   60
#define LLC_OPT_MAX_P_TMR_EXP     60
#define LLC_OPT_MAX_REJ_TMR_EXP   60
#define LLC_OPT_MAX_BUSY_TMR_EXP  60

/* LLC SAP types. */
#define LLC_SAP_NULL    0x00        /* NULL SAP.            */
#define LLC_SAP_LLC 0x02        /* LLC Sublayer Management.     */
#define LLC_SAP_SNA 0x04        /* SNA Path Control.        */
#define LLC_SAP_PNM 0x0E        /* Proway Network Management.   */  
#define LLC_SAP_IP  0x06        /* TCP/IP.          */
#define LLC_SAP_BSPAN   0x42        /* Bridge Spanning Tree Proto   */
#define LLC_SAP_MMS 0x4E        /* Manufacturing Message Srv.   */
#define LLC_SAP_8208    0x7E        /* ISO 8208         */
#define LLC_SAP_3COM    0x80        /* 3COM.            */
#define LLC_SAP_PRO 0x8E        /* Proway Active Station List   */
#define LLC_SAP_SNAP    0xAA        /* SNAP.            */
#define LLC_SAP_BANYAN  0xBC        /* Banyan.          */
#define LLC_SAP_IPX 0xE0        /* IPX/SPX.             */
#define LLC_SAP_NETBEUI 0xF0        /* NetBEUI.             */
#define LLC_SAP_LANMGR  0xF4        /* LanManager.          */
#define LLC_SAP_IMPL    0xF8        /* IMPL             */
#define LLC_SAP_DISC    0xFC        /* Discovery            */
#define LLC_SAP_OSI 0xFE        /* OSI Network Layers.      */
#define LLC_SAP_LAR 0xDC        /* LAN Address Resolution   */
#define LLC_SAP_RM  0xD4        /* Resource Management      */
#define LLC_SAP_GLOBAL  0xFF        /* Global SAP.          */

struct llc_pktinfo {
    int lpi_ifindex;
    unsigned char lpi_sap;
    unsigned char lpi_mac[IFHWADDRLEN];
};

#endif /* _UAPI__LINUX_LLC_H */