664 lines
24 KiB
C
664 lines
24 KiB
C
/*
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* Copyright (C) Dirk Husemann, Computer Science Department IV,
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* University of Erlangen-Nuremberg, Germany, 1990, 1991, 1992
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Dirk Husemann and the Computer Science Department (IV) of
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* the University of Erlangen-Nuremberg, Germany.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)llc_var.h 8.1 (Berkeley) 6/10/93
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* $Id: llc_var.h,v 1.2 1994/08/02 07:47:25 davidg Exp $
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*/
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#ifndef _NETCCITT_LLC_VAR_H_
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#define _NETCCITT_LLC_VAR_H_
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#ifdef __STDC__
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/*
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* Forward structure declarations for function prototypes [sic].
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*/
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struct llc;
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#endif
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#define NPAIDB_LINK 0
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struct npaidbentry {
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union {
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/* MAC,DLSAP -> CONS */
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struct {
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struct llc_linkcb *NE_link;
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struct rtentry *NE_rt;
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} NE;
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/* SAP info for unconfigured incoming calls */
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struct {
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u_short SI_class;
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#define LLC_CLASS_I 0x1
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#define LLC_CLASS_II 0x3
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#define LLC_CLASS_III 0x4 /* Future */
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#define LLC_CLASS_IV 0x7 /* Future */
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u_short SI_window;
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u_short SI_trace;
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u_short SI_xchxid;
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void (*SI_input)
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__P((struct mbuf *));
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caddr_t (*SI_ctlinput)
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__P((int, struct sockaddr *, caddr_t));
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} SI;
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} NESIun;
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};
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#define np_link NESIun.NE.NE_link
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#define np_rt NESIun.NE.NE_rt
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#define si_class NESIun.SI.SI_class
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#define si_window NESIun.SI.SI_window
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#define si_trace NESIun.SI.SI_trace
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#define si_xchxid NESIun.SI.SI_xchxid
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#define si_input NESIun.SI.SI_input
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#define si_ctlinput NESIun.SI.SI_ctlinput
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#define NPDL_SAPNETMASK 0x7e
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/*
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* Definitions for accessing bitfields/bitslices inside
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* LLC2 headers
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*/
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struct bitslice {
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unsigned int bs_mask;
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unsigned int bs_shift;
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};
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#define i_z 0
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#define i_ns 1
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#define i_pf 0
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#define i_nr 1
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#define s_oz 2
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#define s_selector 3
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#define s_pf 0
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#define s_nr 1
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#define u_bb 2
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#define u_select_other 3
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#define u_pf 4
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#define u_select 5
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#define f_vs 1
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#define f_cr 0
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#define f_vr 1
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#define f_wxyzv 6
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#define LLCGBITS(Arg, Index) (((Arg) & llc_bitslice[(Index)].bs_mask) >> llc_bitslice[(Index)].bs_shift)
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#define LLCSBITS(Arg, Index, Val) (Arg) |= (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask)
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#define LLCCSBITS(Arg, Index, Val) (Arg) = (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask)
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extern struct bitslice llc_bitslice[];
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#define LLC_CMD 0
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#define LLC_RSP 1
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#define LLC_MAXCMDRSP 2
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/*
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* LLC events --- These events may either be frames received from the
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* remote LLC DSAP, request from the network layer user,
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* timer events from llc_timer(), or diagnostic events from
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* llc_input().
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*/
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/* LLC frame types */
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#define LLCFT_INFO 0 * LLC_MAXCMDRSP
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#define LLCFT_RR 1 * LLC_MAXCMDRSP
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#define LLCFT_RNR 2 * LLC_MAXCMDRSP
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#define LLCFT_REJ 3 * LLC_MAXCMDRSP
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#define LLCFT_DM 4 * LLC_MAXCMDRSP
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#define LLCFT_SABME 5 * LLC_MAXCMDRSP
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#define LLCFT_DISC 6 * LLC_MAXCMDRSP
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#define LLCFT_UA 7 * LLC_MAXCMDRSP
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#define LLCFT_FRMR 8 * LLC_MAXCMDRSP
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#define LLCFT_UI 9 * LLC_MAXCMDRSP
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#define LLCFT_XID 10 * LLC_MAXCMDRSP
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#define LLCFT_TEST 11 * LLC_MAXCMDRSP
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/* LLC2 timer events */
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#define LLC_ACK_TIMER_EXPIRED 12 * LLC_MAXCMDRSP
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#define LLC_P_TIMER_EXPIRED 13 * LLC_MAXCMDRSP
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#define LLC_REJ_TIMER_EXPIRED 14 * LLC_MAXCMDRSP
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#define LLC_BUSY_TIMER_EXPIRED 15 * LLC_MAXCMDRSP
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/* LLC2 diagnostic events */
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#define LLC_INVALID_NR 16 * LLC_MAXCMDRSP
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#define LLC_INVALID_NS 17 * LLC_MAXCMDRSP
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#define LLC_BAD_PDU 18 * LLC_MAXCMDRSP
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#define LLC_LOCAL_BUSY_DETECTED 19 * LLC_MAXCMDRSP
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#define LLC_LOCAL_BUSY_CLEARED 20 * LLC_MAXCMDRSP
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/* Network layer user requests */
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/*
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* NL_CONNECT_REQUEST --- The user has requested that a data link connection
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* be established with a remote LLC DSAP.
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*/
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#define NL_CONNECT_REQUEST 21 * LLC_MAXCMDRSP
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/*
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* NL_CONNECT_RESPONSE --- The user has accepted the data link connection.
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*/
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#define NL_CONNECT_RESPONSE 22 * LLC_MAXCMDRSP
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/*
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* NL_RESET_REQUEST --- The user has requested that the data link with the
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* remote LLC DSAP be reset.
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*/
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#define NL_RESET_REQUEST 23 * LLC_MAXCMDRSP
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/*
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* NL_RESET_RESPONSE --- The user has accepted the reset of the data link
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* connection.
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*/
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#define NL_RESET_RESPONSE 24 * LLC_MAXCMDRSP
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/*
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* NL_DISCONNECT_REQUEST --- The user has requested that the data link
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* connection with remote LLC DSAP be terminated.
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*/
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#define NL_DISCONNECT_REQUEST 25 * LLC_MAXCMDRSP
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/*
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* NL_DATA_REQUEST --- The user has requested that a data unit be sent ot the
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* remote LLC DSAP.
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*/
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#define NL_DATA_REQUEST 26 * LLC_MAXCMDRSP
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/*
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* NL_INITIATE_PF_CYCLE --- The local LLC wants to initiate a P/F cycle.
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*/
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#define NL_INITIATE_PF_CYCLE 27 * LLC_MAXCMDRSP
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/*
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* NL_LOCAL_BUSY_DETECTED --- The local entity has encountered a busy condition
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*/
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#define NL_LOCAL_BUSY_DETECTED 28 * LLC_MAXCMDRSP
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#define LLCFT_NONE 255
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/* return message from state handlers */
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/*
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* LLC_CONNECT_INDICATION --- Inform the user that a connection has been
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* requested by a remote LLC SSAP.
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*/
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#define LLC_CONNECT_INDICATION 1
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/*
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* LLC_CONNECT_CONFIRM --- The connection service component indicates that the
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* remote network entity has accepted the connection.
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*/
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#define LLC_CONNECT_CONFIRM 2
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/*
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* LLC_DISCONNECT_INDICATION --- Inform the user that the remote network
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* entity has intiated disconnection of the data
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* link connection.
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*/
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#define LLC_DISCONNECT_INDICATION 3
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/*
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* LLC_RESET_CONFIRM --- The connection service component indicates that the
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* remote network entity has accepted the reset.
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*/
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#define LLC_RESET_CONFIRM 4
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/*
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* LLC_RESET_INDICATION_REMOTE --- The remote network entity or remote peer
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* has initiated a reset of the data link
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* connection.
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*/
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#define LLC_RESET_INDICATION_REMOTE 5
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/*
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* LLC_RESET_INDICATION_LOCAL --- The local LLC has determined that the data
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* link connection is in need of
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* reinitialization.
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*/
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#define LLC_RESET_INDICATION_LOCAL 6
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/*
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* LLC_FRMR_RECEIVED --- The local connection service component has received a
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* FRMR response PDU.
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*/
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#define LLC_FRMR_RECEIVED 7
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/*
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* LLC_FRMR_SENT --- The local connection component has received an ivalid
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* PDU, and has sent a FRMR response PDU.
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*/
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#define LLC_FRMR_SENT 8
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/*
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* LLC_DATA_INDICATION --- The connection service component passes the data
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* unit from the received I PDU to the user.
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*/
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#define LLC_DATA_INDICATION 9
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/*
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* LLC_REMOTE_NOT_BUSY --- The remote LLC DSAP is no longer busy. The local
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* connection service component will now accept a
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* DATA_REQUEST.
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*/
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#define LLC_REMOTE_NOT_BUSY 10
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/*
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* LLC_REMOTE_BUSY --- The remote LLC DSAP is busy. The local connection
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* service component will not accept a DATA_REQUEST.
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*/
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#define LLC_REMOTE_BUSY 11
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/* Internal return code */
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#define LLC_PASSITON 255
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#define INFORMATION_CONTROL 0x00
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#define SUPERVISORY_CONTROL 0x02
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#define UNUMBERED_CONTROL 0x03
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/*
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* Other necessary definitions
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*/
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#define LLC_MAX_SEQUENCE 128
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#define LLC_MAX_WINDOW 127
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#define LLC_WINDOW_SIZE 7
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/*
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* Don't we love this one? CCITT likes to suck on bits 8=)
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*/
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#define NLHDRSIZEGUESS 3
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/*
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* LLC control block
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*/
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struct llc_linkcb {
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struct llccb_q {
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struct llccb_q *q_forw; /* admin chain */
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struct llccb_q *q_backw;
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} llcl_q;
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struct npaidbentry *llcl_sapinfo; /* SAP information */
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struct sockaddr_dl llcl_addr; /* link snpa address */
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struct rtentry *llcl_nlrt; /* layer 3 -> LLC */
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struct rtentry *llcl_llrt; /* LLC -> layer 3 */
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struct ifnet *llcl_if; /* our interface */
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caddr_t llcl_nlnext; /* cb for network layer */
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struct mbuf *llcl_writeqh; /* Write queue head */
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struct mbuf *llcl_writeqt; /* Write queue tail */
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struct mbuf **llcl_output_buffers;
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short llcl_timers[6]; /* timer array */
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long llcl_timerflags; /* flags signalling running timers */
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int (*llcl_statehandler)
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__P((struct llc_linkcb *, struct llc *, int, int, int));
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int llcl_P_flag;
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int llcl_F_flag;
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int llcl_S_flag;
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int llcl_DATA_flag;
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int llcl_REMOTE_BUSY_flag;
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int llcl_DACTION_flag; /* delayed action */
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int llcl_retry;
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/*
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* The following components deal --- in one way or the other ---
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* with the LLC2 window. Indicated by either [L] or [W] is the
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* domain of the specific component:
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*
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* [L] The domain is 0--LLC_MAX_WINDOW
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* [W] The domain is 0--llcl_window
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*/
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short llcl_vr; /* next to receive [L] */
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short llcl_vs; /* next to send [L] */
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short llcl_nr_received; /* next frame to b ack'd [L] */
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short llcl_freeslot; /* next free slot [W] */
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short llcl_projvs; /* V(S) associated with freeslot */
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short llcl_slotsfree; /* free slots [W] */
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short llcl_window; /* window size */
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/*
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* In llcl_frmrinfo we jot down the last frmr info field, which we
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* need to do as we need to be able to resend it in the ERROR state.
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*/
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struct frmrinfo llcl_frmrinfo; /* last FRMR info field */
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};
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#define llcl_frmr_pdu0 llcl_frmrinfo.rej_pdu_0
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#define llcl_frmr_pdu1 llcl_frmrinfo.rej_pdu_1
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#define llcl_frmr_control llcl_frmrinfo.frmr_control
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#define llcl_frmr_control_ext llcl_frmrinfo.frmr_control_ext
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#define llcl_frmr_cause llcl_frmrinfo.frmr_cause
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#define LQNEXT(l) (struct llc_linkcb *)((l)->llcl_q.q_forw)
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#define LQEMPTY (llccb_q.q_forw == &llccb_q)
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#define LQFIRST (struct llc_linkcb *)(llccb_q.q_forw)
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#define LQVALID(l) (!((struct llccb_q *)(l) == &llccb_q))
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#define LLC_ENQUEUE(l, m) if ((l)->llcl_writeqh == NULL) { \
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(l)->llcl_writeqh = (m); \
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(l)->llcl_writeqt = (m); \
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} else { \
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(l)->llcl_writeqt->m_nextpkt = (m); \
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(l)->llcl_writeqt = (m); \
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}
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#define LLC_DEQUEUE(l, m) if ((l)->llcl_writeqh == NULL) \
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(m) = NULL; \
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else { \
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(m) = (l)->llcl_writeqh; \
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(l)->llcl_writeqh = (l)->llcl_writeqh->m_nextpkt; \
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}
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#define LLC_SETFRAME(l, m) { \
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if ((l)->llcl_slotsfree > 0) { \
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(l)->llcl_slotsfree--; \
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(l)->llcl_output_buffers[(l)->llcl_freeslot] = (m); \
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(l)->llcl_freeslot = ((l)->llcl_freeslot+1) % (l)->llcl_window; \
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LLC_INC((l)->llcl_projvs); \
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} \
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}
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/*
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* handling of sockaddr_dl's
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*/
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#define LLADDRLEN(s) ((s)->sdl_alen + (s)->sdl_nlen)
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#define LLSAPADDR(s) ((s)->sdl_data[LLADDRLEN(s)-1] & 0xff)
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#define LLSAPLOC(s, if) ((s)->sdl_nlen + (if)->if_addrlen)
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struct sdl_hdr {
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struct sockaddr_dl sdlhdr_dst;
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struct sockaddr_dl sdlhdr_src;
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long sdlhdr_len;
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};
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#define LLC_GETHDR(f,m) { \
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struct mbuf *_m = (struct mbuf *) (m); \
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if (_m) { \
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M_PREPEND(_m, LLC_ISFRAMELEN, M_DONTWAIT); \
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bzero(mtod(_m, caddr_t), LLC_ISFRAMELEN); \
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} else { \
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MGETHDR (_m, M_DONTWAIT, MT_HEADER); \
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if (_m != NULL) { \
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_m->m_pkthdr.len = _m->m_len = LLC_UFRAMELEN; \
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_m->m_next = _m->m_act = NULL; \
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bzero(mtod(_m, caddr_t), LLC_UFRAMELEN); \
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} else return; \
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} \
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(m) = _m; \
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(f) = mtod(m, struct llc *); \
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}
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#define LLC_NEWSTATE(l, LLCstate) (l)->llcl_statehandler = llc_state_##LLCstate
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#define LLC_STATEEQ(l, LLCstate) ((l)->llcl_statehandler == llc_state_##LLCstate ? 1 : 0)
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#define LLC_ACK_SHIFT 0
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#define LLC_P_SHIFT 1
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#define LLC_BUSY_SHIFT 2
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#define LLC_REJ_SHIFT 3
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#define LLC_AGE_SHIFT 4
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#define LLC_DACTION_SHIFT 5
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#define LLC_TIMER_NOTRUNNING 0
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#define LLC_TIMER_RUNNING 1
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#define LLC_TIMER_EXPIRED 2
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#define LLC_STARTTIMER(l, LLCtimer) { \
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(l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = llc_##LLCtimer##_timer; \
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(l)->llcl_timerflags |= (1<<LLC_##LLCtimer##_SHIFT); \
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}
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#define LLC_STOPTIMER(l, LLCtimer) { \
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(l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = 0; \
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(l)->llcl_timerflags &= ~(1<<LLC_##LLCtimer##_SHIFT); \
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}
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#define LLC_AGETIMER(l, LLCtimer) if ((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] > 0) \
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(l)->llcl_timers[LLC_##LLCtimer##_SHIFT]--;
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#define LLC_TIMERXPIRED(l, LLCtimer) \
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(((l)->llcl_timerflags & (1<<LLC_##LLCtimer##_SHIFT)) ? \
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(((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] == 0 ) ? \
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LLC_TIMER_EXPIRED : LLC_TIMER_RUNNING) : LLC_TIMER_NOTRUNNING)
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#define FOR_ALL_LLC_TIMERS(t) for ((t) = LLC_ACK_SHIFT; (t) < LLC_AGE_SHIFT; (t)++)
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#define LLC_SETFLAG(l, LLCflag, v) (l)->llcl_##LLCflag##_flag = (v)
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#define LLC_GETFLAG(l, LLCflag) (l)->llcl_##LLCflag##_flag
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#define LLC_RESETCOUNTER(l) { \
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(l)->llcl_vs = (l)->llcl_vr = (l)->llcl_retry = 0; \
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llc_resetwindow((l)); \
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}
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/*
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* LLC2 macro definitions
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*/
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#define LLC_START_ACK_TIMER(l) LLC_STARTTIMER((l), ACK)
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#define LLC_STOP_ACK_TIMER(l) LLC_STOPTIMER((l), ACK)
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#define LLC_START_REJ_TIMER(l) LLC_STARTTIMER((l), REJ)
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#define LLC_STOP_REJ_TIMER(l) LLC_STOPTIMER((l), REJ)
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#define LLC_START_P_TIMER(l) { \
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LLC_STARTTIMER((l), P); \
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if (LLC_GETFLAG((l), P) == 0) \
|
|
(l)->llcl_retry = 0; \
|
|
LLC_SETFLAG((l), P, 1); \
|
|
}
|
|
#define LLC_STOP_P_TIMER(l) { \
|
|
LLC_STOPTIMER((l), P); \
|
|
LLC_SETFLAG((l), P, 0); \
|
|
}
|
|
#define LLC_STOP_ALL_TIMERS(l) { \
|
|
LLC_STOPTIMER((l), ACK); \
|
|
LLC_STOPTIMER((l), REJ); \
|
|
LLC_STOPTIMER((l), BUSY); \
|
|
LLC_STOPTIMER((l), P); \
|
|
}
|
|
|
|
|
|
#define LLC_INC(i) (i) = ((i)+1) % LLC_MAX_SEQUENCE
|
|
|
|
#define LLC_NR_VALID(l, nr) ((l)->llcl_vs < (l)->llcl_nr_received ? \
|
|
(((nr) >= (l)->llcl_nr_received) || \
|
|
((nr) <= (l)->llcl_vs) ? 1 : 0) : \
|
|
(((nr) <= (l)->llcl_vs) && \
|
|
((nr) >= (l)->llcl_nr_received) ? 1 : 0))
|
|
|
|
#define LLC_UPDATE_P_FLAG(l, cr, pf) { \
|
|
if ((cr) == LLC_RSP && (pf) == 1) { \
|
|
LLC_SETFLAG((l), P, 0); \
|
|
LLC_STOPTIMER((l), P); \
|
|
} \
|
|
}
|
|
|
|
#define LLC_UPDATE_NR_RECEIVED(l, nr) { \
|
|
while ((l)->llcl_nr_received != (nr)) { \
|
|
struct mbuf *_m; \
|
|
register short seq; \
|
|
if (_m = (l)->llcl_output_buffers[seq = llc_seq2slot((l), (l)->llcl_nr_received)]) \
|
|
m_freem(_m); \
|
|
(l)->llcl_output_buffers[seq] = NULL; \
|
|
LLC_INC((l)->llcl_nr_received); \
|
|
(l)->llcl_slotsfree++; \
|
|
} \
|
|
(l)->llcl_retry = 0; \
|
|
if ((l)->llcl_slotsfree < (l)->llcl_window) { \
|
|
LLC_START_ACK_TIMER(l); \
|
|
} else LLC_STOP_ACK_TIMER(l); \
|
|
LLC_STARTTIMER((l), DACTION); \
|
|
}
|
|
|
|
#define LLC_SET_REMOTE_BUSY(l,a) { \
|
|
if (LLC_GETFLAG((l), REMOTE_BUSY) == 0) { \
|
|
LLC_SETFLAG((l), REMOTE_BUSY, 1); \
|
|
LLC_STARTTIMER((l), BUSY); \
|
|
(a) = LLC_REMOTE_BUSY; \
|
|
} else { \
|
|
(a) = 0; \
|
|
} \
|
|
}
|
|
#define LLC_CLEAR_REMOTE_BUSY(l,a) { \
|
|
if (LLC_GETFLAG((l), REMOTE_BUSY) == 1) { \
|
|
LLC_SETFLAG((l), REMOTE_BUSY, 1); \
|
|
LLC_STOPTIMER((l), BUSY); \
|
|
if (LLC_STATEEQ((l), NORMAL) || \
|
|
LLC_STATEEQ((l), REJECT) || \
|
|
LLC_STATEEQ((l), BUSY)) \
|
|
llc_resend((l), LLC_CMD, 0); \
|
|
(a) = LLC_REMOTE_NOT_BUSY; \
|
|
} else { \
|
|
(a) = 0; \
|
|
} \
|
|
}
|
|
|
|
#define LLC_DACKCMD 0x1
|
|
#define LLC_DACKCMDPOLL 0x2
|
|
#define LLC_DACKRSP 0x3
|
|
#define LLC_DACKRSPFINAL 0x4
|
|
|
|
#define LLC_SENDACKNOWLEDGE(l, cmd, pf) { \
|
|
if ((cmd) == LLC_CMD) { \
|
|
LLC_SETFLAG((l), DACTION, ((pf) == 0 ? LLC_DACKCMD : LLC_DACKCMDPOLL)); \
|
|
} else { \
|
|
LLC_SETFLAG((l), DACTION, ((pf) == 0 ? LLC_DACKRSP : LLC_DACKRSPFINAL)); \
|
|
} \
|
|
}
|
|
|
|
#define LLC_FRMR_W (1<<0)
|
|
#define LLC_FRMR_X (1<<1)
|
|
#define LLC_FRMR_Y (1<<2)
|
|
#define LLC_FRMR_Z (1<<3)
|
|
#define LLC_FRMR_V (1<<4)
|
|
|
|
#define LLC_SETFRMR(l, f, cr, c) { \
|
|
if ((f)->llc_control & 0x3) { \
|
|
(l)->llcl_frmr_pdu0 = (f)->llc_control; \
|
|
(l)->llcl_frmr_pdu1 = 0; \
|
|
} else { \
|
|
(l)->llcl_frmr_pdu0 = (f)->llc_control; \
|
|
(l)->llcl_frmr_pdu1 = (f)->llc_control_ext; \
|
|
} \
|
|
LLCCSBITS((l)->llcl_frmr_control, f_vs, (l)->llcl_vs); \
|
|
LLCCSBITS((l)->llcl_frmr_control_ext, f_cr, (cr)); \
|
|
LLCSBITS((l)->llcl_frmr_control_ext, f_vr, (l)->llcl_vr); \
|
|
LLCCSBITS((l)->llcl_frmr_cause, f_wxyzv, (c)); \
|
|
}
|
|
|
|
/*
|
|
* LLC tracing levels:
|
|
* LLCTR_INTERESTING interesting event, we might care to know about
|
|
* it, but then again, we might not ...
|
|
* LLCTR_SHOULDKNOW we probably should know about this event
|
|
* LLCTR_URGENT something has gone utterly wrong ...
|
|
*/
|
|
#define LLCTR_INTERESTING 1
|
|
#define LLCTR_SHOULDKNOW 2
|
|
#define LLCTR_URGENT 3
|
|
|
|
#ifdef LLCDEBUG
|
|
#define LLC_TRACE(lp, l, msg) llc_trace((lp), (l), (msg))
|
|
#else /* LLCDEBUG */
|
|
#define LLC_TRACE(lp, l, msg) /* NOOP */
|
|
#endif /* LLCDEBUG */
|
|
|
|
#define LLC_N2_VALUE 15 /* up to 15 retries */
|
|
#define LLC_ACK_TIMER 10 /* 5 secs */
|
|
#define LLC_P_TIMER 4 /* 2 secs */
|
|
#define LLC_BUSY_TIMER 12 /* 6 secs */
|
|
#define LLC_REJ_TIMER 12 /* 6 secs */
|
|
#define LLC_AGE_TIMER 40 /* 20 secs */
|
|
#define LLC_DACTION_TIMER 2 /* 1 secs */
|
|
|
|
#if defined (KERNEL) && defined(LLC)
|
|
extern int llc_n2;
|
|
extern int llc_ACK_timer;
|
|
extern int llc_P_timer;
|
|
extern int llc_REJ_timer;
|
|
extern int llc_BUSY_timer;
|
|
extern int llc_AGE_timer;
|
|
extern int llc_DACTION_timer;
|
|
|
|
extern int af_link_rts_init_done;
|
|
|
|
#define USES_AF_LINK_RTS { \
|
|
if (!af_link_rts_init_done) { \
|
|
rn_inithead((void **)&rt_tables[AF_LINK], 32); \
|
|
af_link_rts_init_done++; \
|
|
} \
|
|
}
|
|
|
|
struct ifqueue llcintrq;
|
|
|
|
extern struct llccb_q llccb_q;
|
|
extern char *frame_names[];
|
|
|
|
/*
|
|
* Function prototypes
|
|
*/
|
|
int sdl_cmp __P((struct sockaddr_dl *, struct sockaddr_dl *));
|
|
int sdl_copy __P((struct sockaddr_dl *, struct sockaddr_dl *));
|
|
int sdl_swapaddr __P((struct sockaddr_dl *, struct sockaddr_dl *));
|
|
int sdl_checkaddrif __P((struct ifnet *, struct sockaddr_dl *));
|
|
int sdl_setaddrif __P((struct ifnet *, u_char *, u_char, u_char,
|
|
struct sockaddr_dl *));
|
|
int sdl_sethdrif __P((struct ifnet *, u_char *, u_char, u_char *, u_char, u_char,
|
|
struct sdl_hdr *));
|
|
struct npaidbentry *llc_setsapinfo __P((struct ifnet *, u_char, u_char,
|
|
struct dllconfig *));
|
|
struct npaidbentry *llc_getsapinfo __P((u_char, struct ifnet *));
|
|
struct rtentry *npaidb_enrich __P((short, caddr_t, struct sockaddr_dl *));
|
|
int npaidb_destroy __P((struct rtentry *));
|
|
short llc_seq2slot __P((struct llc_linkcb *, short));
|
|
int llc_state_ADM __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_CONN __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_RESET_WAIT __P((struct llc_linkcb *, struct llc *,
|
|
int, int, int));
|
|
int llc_state_RESET_CHECK __P((struct llc_linkcb *, struct llc *,
|
|
int, int, int));
|
|
int llc_state_SETUP __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_RESET __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_D_CONN __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_ERROR __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_NBRAcore __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_NORMAL __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_BUSY __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_REJECT __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_AWAIT __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_AWAIT_BUSY __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_state_AWAIT_REJECT __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_statehandler __P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llc_init __P((void));
|
|
struct llc_linkcb *llc_newlink __P((struct sockaddr_dl *, struct ifnet *,
|
|
struct rtentry *, caddr_t, struct rtentry *));
|
|
int llc_dellink __P((struct llc_linkcb *));
|
|
int llc_anytimersup __P((struct llc_linkcb *));
|
|
char * llc_getstatename __P((struct llc_linkcb *));
|
|
void llc_link_dump __P((struct llc_linkcb *, const char *));
|
|
void llc_trace __P((struct llc_linkcb *, int, const char *));
|
|
void llc_resetwindow __P((struct llc_linkcb *));
|
|
int llc_decode __P((struct llc *, struct llc_linkcb *));
|
|
void llc_timer __P((void));
|
|
void llcintr __P((void));
|
|
int llc_input __P((struct llc_linkcb *, struct mbuf *, u_char));
|
|
caddr_t llc_ctlinput __P((int, struct sockaddr *, caddr_t));
|
|
int llc_output __P((struct llc_linkcb *, struct mbuf *));
|
|
void llc_start __P((struct llc_linkcb *));
|
|
int llc_send __P((struct llc_linkcb *, int, int, int));
|
|
int llc_resend __P((struct llc_linkcb *, int, int));
|
|
int llc_rawsend __P((struct llc_linkcb *, struct mbuf *, struct llc *, int, int,
|
|
int, int));
|
|
int cons_rtrequest __P((int, struct rtentry *, struct sockaddr *));
|
|
int x25_llcglue __P((int, struct sockaddr *));
|
|
|
|
#endif
|
|
|
|
#endif
|