mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-17 10:26:15 +00:00
664 lines
24 KiB
C
664 lines
24 KiB
C
/*
|
|
* Copyright (C) Dirk Husemann, Computer Science Department IV,
|
|
* University of Erlangen-Nuremberg, Germany, 1990, 1991, 1992
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Dirk Husemann and the Computer Science Department (IV) of
|
|
* the University of Erlangen-Nuremberg, Germany.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*
|
|
* @(#)llc_var.h 8.1 (Berkeley) 6/10/93
|
|
* $Id: llc_var.h,v 1.2 1994/08/02 07:47:25 davidg Exp $
|
|
*/
|
|
|
|
#ifndef _NETCCITT_LLC_VAR_H_
|
|
#define _NETCCITT_LLC_VAR_H_
|
|
|
|
#ifdef __STDC__
|
|
/*
|
|
* Forward structure declarations for function prototypes [sic].
|
|
*/
|
|
struct llc;
|
|
#endif
|
|
|
|
#define NPAIDB_LINK 0
|
|
|
|
struct npaidbentry {
|
|
union {
|
|
/* MAC,DLSAP -> CONS */
|
|
struct {
|
|
struct llc_linkcb *NE_link;
|
|
struct rtentry *NE_rt;
|
|
} NE;
|
|
/* SAP info for unconfigured incoming calls */
|
|
struct {
|
|
u_short SI_class;
|
|
#define LLC_CLASS_I 0x1
|
|
#define LLC_CLASS_II 0x3
|
|
#define LLC_CLASS_III 0x4 /* Future */
|
|
#define LLC_CLASS_IV 0x7 /* Future */
|
|
u_short SI_window;
|
|
u_short SI_trace;
|
|
u_short SI_xchxid;
|
|
void (*SI_input)
|
|
__P((struct mbuf *));
|
|
caddr_t (*SI_ctlinput)
|
|
__P((int, struct sockaddr *, caddr_t));
|
|
} SI;
|
|
} NESIun;
|
|
};
|
|
#define np_link NESIun.NE.NE_link
|
|
#define np_rt NESIun.NE.NE_rt
|
|
#define si_class NESIun.SI.SI_class
|
|
#define si_window NESIun.SI.SI_window
|
|
#define si_trace NESIun.SI.SI_trace
|
|
#define si_xchxid NESIun.SI.SI_xchxid
|
|
#define si_input NESIun.SI.SI_input
|
|
#define si_ctlinput NESIun.SI.SI_ctlinput
|
|
|
|
#define NPDL_SAPNETMASK 0x7e
|
|
|
|
/*
|
|
* Definitions for accessing bitfields/bitslices inside
|
|
* LLC2 headers
|
|
*/
|
|
struct bitslice {
|
|
unsigned int bs_mask;
|
|
unsigned int bs_shift;
|
|
};
|
|
|
|
|
|
#define i_z 0
|
|
#define i_ns 1
|
|
#define i_pf 0
|
|
#define i_nr 1
|
|
#define s_oz 2
|
|
#define s_selector 3
|
|
#define s_pf 0
|
|
#define s_nr 1
|
|
#define u_bb 2
|
|
#define u_select_other 3
|
|
#define u_pf 4
|
|
#define u_select 5
|
|
#define f_vs 1
|
|
#define f_cr 0
|
|
#define f_vr 1
|
|
#define f_wxyzv 6
|
|
|
|
#define LLCGBITS(Arg, Index) (((Arg) & llc_bitslice[(Index)].bs_mask) >> llc_bitslice[(Index)].bs_shift)
|
|
#define LLCSBITS(Arg, Index, Val) (Arg) |= (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask)
|
|
#define LLCCSBITS(Arg, Index, Val) (Arg) = (((Val) << llc_bitslice[(Index)].bs_shift) & llc_bitslice[(Index)].bs_mask)
|
|
|
|
extern struct bitslice llc_bitslice[];
|
|
|
|
#define LLC_CMD 0
|
|
#define LLC_RSP 1
|
|
#define LLC_MAXCMDRSP 2
|
|
|
|
/*
|
|
* LLC events --- These events may either be frames received from the
|
|
* remote LLC DSAP, request from the network layer user,
|
|
* timer events from llc_timer(), or diagnostic events from
|
|
* llc_input().
|
|
*/
|
|
|
|
/* LLC frame types */
|
|
#define LLCFT_INFO 0 * LLC_MAXCMDRSP
|
|
#define LLCFT_RR 1 * LLC_MAXCMDRSP
|
|
#define LLCFT_RNR 2 * LLC_MAXCMDRSP
|
|
#define LLCFT_REJ 3 * LLC_MAXCMDRSP
|
|
#define LLCFT_DM 4 * LLC_MAXCMDRSP
|
|
#define LLCFT_SABME 5 * LLC_MAXCMDRSP
|
|
#define LLCFT_DISC 6 * LLC_MAXCMDRSP
|
|
#define LLCFT_UA 7 * LLC_MAXCMDRSP
|
|
#define LLCFT_FRMR 8 * LLC_MAXCMDRSP
|
|
#define LLCFT_UI 9 * LLC_MAXCMDRSP
|
|
#define LLCFT_XID 10 * LLC_MAXCMDRSP
|
|
#define LLCFT_TEST 11 * LLC_MAXCMDRSP
|
|
|
|
/* LLC2 timer events */
|
|
#define LLC_ACK_TIMER_EXPIRED 12 * LLC_MAXCMDRSP
|
|
#define LLC_P_TIMER_EXPIRED 13 * LLC_MAXCMDRSP
|
|
#define LLC_REJ_TIMER_EXPIRED 14 * LLC_MAXCMDRSP
|
|
#define LLC_BUSY_TIMER_EXPIRED 15 * LLC_MAXCMDRSP
|
|
|
|
/* LLC2 diagnostic events */
|
|
#define LLC_INVALID_NR 16 * LLC_MAXCMDRSP
|
|
#define LLC_INVALID_NS 17 * LLC_MAXCMDRSP
|
|
#define LLC_BAD_PDU 18 * LLC_MAXCMDRSP
|
|
#define LLC_LOCAL_BUSY_DETECTED 19 * LLC_MAXCMDRSP
|
|
#define LLC_LOCAL_BUSY_CLEARED 20 * LLC_MAXCMDRSP
|
|
|
|
/* Network layer user requests */
|
|
/*
|
|
* NL_CONNECT_REQUEST --- The user has requested that a data link connection
|
|
* be established with a remote LLC DSAP.
|
|
*/
|
|
#define NL_CONNECT_REQUEST 21 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_CONNECT_RESPONSE --- The user has accepted the data link connection.
|
|
*/
|
|
#define NL_CONNECT_RESPONSE 22 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_RESET_REQUEST --- The user has requested that the data link with the
|
|
* remote LLC DSAP be reset.
|
|
*/
|
|
#define NL_RESET_REQUEST 23 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_RESET_RESPONSE --- The user has accepted the reset of the data link
|
|
* connection.
|
|
*/
|
|
#define NL_RESET_RESPONSE 24 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_DISCONNECT_REQUEST --- The user has requested that the data link
|
|
* connection with remote LLC DSAP be terminated.
|
|
*/
|
|
#define NL_DISCONNECT_REQUEST 25 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_DATA_REQUEST --- The user has requested that a data unit be sent ot the
|
|
* remote LLC DSAP.
|
|
*/
|
|
#define NL_DATA_REQUEST 26 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_INITIATE_PF_CYCLE --- The local LLC wants to initiate a P/F cycle.
|
|
*/
|
|
#define NL_INITIATE_PF_CYCLE 27 * LLC_MAXCMDRSP
|
|
/*
|
|
* NL_LOCAL_BUSY_DETECTED --- The local entity has encountered a busy condition
|
|
*/
|
|
#define NL_LOCAL_BUSY_DETECTED 28 * LLC_MAXCMDRSP
|
|
|
|
#define LLCFT_NONE 255
|
|
|
|
/* return message from state handlers */
|
|
|
|
/*
|
|
* LLC_CONNECT_INDICATION --- Inform the user that a connection has been
|
|
* requested by a remote LLC SSAP.
|
|
*/
|
|
#define LLC_CONNECT_INDICATION 1
|
|
/*
|
|
* LLC_CONNECT_CONFIRM --- The connection service component indicates that the
|
|
* remote network entity has accepted the connection.
|
|
*/
|
|
#define LLC_CONNECT_CONFIRM 2
|
|
/*
|
|
* LLC_DISCONNECT_INDICATION --- Inform the user that the remote network
|
|
* entity has intiated disconnection of the data
|
|
* link connection.
|
|
*/
|
|
#define LLC_DISCONNECT_INDICATION 3
|
|
/*
|
|
* LLC_RESET_CONFIRM --- The connection service component indicates that the
|
|
* remote network entity has accepted the reset.
|
|
*/
|
|
#define LLC_RESET_CONFIRM 4
|
|
/*
|
|
* LLC_RESET_INDICATION_REMOTE --- The remote network entity or remote peer
|
|
* has initiated a reset of the data link
|
|
* connection.
|
|
*/
|
|
#define LLC_RESET_INDICATION_REMOTE 5
|
|
/*
|
|
* LLC_RESET_INDICATION_LOCAL --- The local LLC has determined that the data
|
|
* link connection is in need of
|
|
* reinitialization.
|
|
*/
|
|
#define LLC_RESET_INDICATION_LOCAL 6
|
|
/*
|
|
* LLC_FRMR_RECEIVED --- The local connection service component has received a
|
|
* FRMR response PDU.
|
|
*/
|
|
#define LLC_FRMR_RECEIVED 7
|
|
/*
|
|
* LLC_FRMR_SENT --- The local connection component has received an ivalid
|
|
* PDU, and has sent a FRMR response PDU.
|
|
*/
|
|
#define LLC_FRMR_SENT 8
|
|
/*
|
|
* LLC_DATA_INDICATION --- The connection service component passes the data
|
|
* unit from the received I PDU to the user.
|
|
*/
|
|
#define LLC_DATA_INDICATION 9
|
|
/*
|
|
* LLC_REMOTE_NOT_BUSY --- The remote LLC DSAP is no longer busy. The local
|
|
* connection service component will now accept a
|
|
* DATA_REQUEST.
|
|
*/
|
|
#define LLC_REMOTE_NOT_BUSY 10
|
|
/*
|
|
* LLC_REMOTE_BUSY --- The remote LLC DSAP is busy. The local connection
|
|
* service component will not accept a DATA_REQUEST.
|
|
*/
|
|
#define LLC_REMOTE_BUSY 11
|
|
|
|
/* Internal return code */
|
|
#define LLC_PASSITON 255
|
|
|
|
#define INFORMATION_CONTROL 0x00
|
|
#define SUPERVISORY_CONTROL 0x02
|
|
#define UNUMBERED_CONTROL 0x03
|
|
|
|
/*
|
|
* Other necessary definitions
|
|
*/
|
|
|
|
#define LLC_MAX_SEQUENCE 128
|
|
#define LLC_MAX_WINDOW 127
|
|
#define LLC_WINDOW_SIZE 7
|
|
|
|
/*
|
|
* Don't we love this one? CCITT likes to suck on bits 8=)
|
|
*/
|
|
#define NLHDRSIZEGUESS 3
|
|
|
|
/*
|
|
* LLC control block
|
|
*/
|
|
|
|
struct llc_linkcb {
|
|
struct llccb_q {
|
|
struct llccb_q *q_forw; /* admin chain */
|
|
struct llccb_q *q_backw;
|
|
} llcl_q;
|
|
struct npaidbentry *llcl_sapinfo; /* SAP information */
|
|
struct sockaddr_dl llcl_addr; /* link snpa address */
|
|
struct rtentry *llcl_nlrt; /* layer 3 -> LLC */
|
|
struct rtentry *llcl_llrt; /* LLC -> layer 3 */
|
|
struct ifnet *llcl_if; /* our interface */
|
|
caddr_t llcl_nlnext; /* cb for network layer */
|
|
struct mbuf *llcl_writeqh; /* Write queue head */
|
|
struct mbuf *llcl_writeqt; /* Write queue tail */
|
|
struct mbuf **llcl_output_buffers;
|
|
short llcl_timers[6]; /* timer array */
|
|
long llcl_timerflags; /* flags signalling running timers */
|
|
int (*llcl_statehandler)
|
|
__P((struct llc_linkcb *, struct llc *, int, int, int));
|
|
int llcl_P_flag;
|
|
int llcl_F_flag;
|
|
int llcl_S_flag;
|
|
int llcl_DATA_flag;
|
|
int llcl_REMOTE_BUSY_flag;
|
|
int llcl_DACTION_flag; /* delayed action */
|
|
int llcl_retry;
|
|
/*
|
|
* The following components deal --- in one way or the other ---
|
|
* with the LLC2 window. Indicated by either [L] or [W] is the
|
|
* domain of the specific component:
|
|
*
|
|
* [L] The domain is 0--LLC_MAX_WINDOW
|
|
* [W] The domain is 0--llcl_window
|
|
*/
|
|
short llcl_vr; /* next to receive [L] */
|
|
short llcl_vs; /* next to send [L] */
|
|
short llcl_nr_received; /* next frame to b ack'd [L] */
|
|
short llcl_freeslot; /* next free slot [W] */
|
|
short llcl_projvs; /* V(S) associated with freeslot */
|
|
short llcl_slotsfree; /* free slots [W] */
|
|
short llcl_window; /* window size */
|
|
/*
|
|
* In llcl_frmrinfo we jot down the last frmr info field, which we
|
|
* need to do as we need to be able to resend it in the ERROR state.
|
|
*/
|
|
struct frmrinfo llcl_frmrinfo; /* last FRMR info field */
|
|
};
|
|
#define llcl_frmr_pdu0 llcl_frmrinfo.rej_pdu_0
|
|
#define llcl_frmr_pdu1 llcl_frmrinfo.rej_pdu_1
|
|
#define llcl_frmr_control llcl_frmrinfo.frmr_control
|
|
#define llcl_frmr_control_ext llcl_frmrinfo.frmr_control_ext
|
|
#define llcl_frmr_cause llcl_frmrinfo.frmr_cause
|
|
|
|
#define LQNEXT(l) (struct llc_linkcb *)((l)->llcl_q.q_forw)
|
|
#define LQEMPTY (llccb_q.q_forw == &llccb_q)
|
|
#define LQFIRST (struct llc_linkcb *)(llccb_q.q_forw)
|
|
#define LQVALID(l) (!((struct llccb_q *)(l) == &llccb_q))
|
|
|
|
#define LLC_ENQUEUE(l, m) if ((l)->llcl_writeqh == NULL) { \
|
|
(l)->llcl_writeqh = (m); \
|
|
(l)->llcl_writeqt = (m); \
|
|
} else { \
|
|
(l)->llcl_writeqt->m_nextpkt = (m); \
|
|
(l)->llcl_writeqt = (m); \
|
|
}
|
|
|
|
#define LLC_DEQUEUE(l, m) if ((l)->llcl_writeqh == NULL) \
|
|
(m) = NULL; \
|
|
else { \
|
|
(m) = (l)->llcl_writeqh; \
|
|
(l)->llcl_writeqh = (l)->llcl_writeqh->m_nextpkt; \
|
|
}
|
|
|
|
#define LLC_SETFRAME(l, m) { \
|
|
if ((l)->llcl_slotsfree > 0) { \
|
|
(l)->llcl_slotsfree--; \
|
|
(l)->llcl_output_buffers[(l)->llcl_freeslot] = (m); \
|
|
(l)->llcl_freeslot = ((l)->llcl_freeslot+1) % (l)->llcl_window; \
|
|
LLC_INC((l)->llcl_projvs); \
|
|
} \
|
|
}
|
|
|
|
/*
|
|
* handling of sockaddr_dl's
|
|
*/
|
|
|
|
#define LLADDRLEN(s) ((s)->sdl_alen + (s)->sdl_nlen)
|
|
#define LLSAPADDR(s) ((s)->sdl_data[LLADDRLEN(s)-1] & 0xff)
|
|
#define LLSAPLOC(s, if) ((s)->sdl_nlen + (if)->if_addrlen)
|
|
|
|
struct sdl_hdr {
|
|
struct sockaddr_dl sdlhdr_dst;
|
|
struct sockaddr_dl sdlhdr_src;
|
|
long sdlhdr_len;
|
|
};
|
|
|
|
#define LLC_GETHDR(f,m) { \
|
|
struct mbuf *_m = (struct mbuf *) (m); \
|
|
if (_m) { \
|
|
M_PREPEND(_m, LLC_ISFRAMELEN, M_DONTWAIT); \
|
|
bzero(mtod(_m, caddr_t), LLC_ISFRAMELEN); \
|
|
} else { \
|
|
MGETHDR (_m, M_DONTWAIT, MT_HEADER); \
|
|
if (_m != NULL) { \
|
|
_m->m_pkthdr.len = _m->m_len = LLC_UFRAMELEN; \
|
|
_m->m_next = _m->m_act = NULL; \
|
|
bzero(mtod(_m, caddr_t), LLC_UFRAMELEN); \
|
|
} else return; \
|
|
} \
|
|
(m) = _m; \
|
|
(f) = mtod(m, struct llc *); \
|
|
}
|
|
|
|
#define LLC_NEWSTATE(l, LLCstate) (l)->llcl_statehandler = llc_state_##LLCstate
|
|
#define LLC_STATEEQ(l, LLCstate) ((l)->llcl_statehandler == llc_state_##LLCstate ? 1 : 0)
|
|
|
|
#define LLC_ACK_SHIFT 0
|
|
#define LLC_P_SHIFT 1
|
|
#define LLC_BUSY_SHIFT 2
|
|
#define LLC_REJ_SHIFT 3
|
|
#define LLC_AGE_SHIFT 4
|
|
#define LLC_DACTION_SHIFT 5
|
|
|
|
#define LLC_TIMER_NOTRUNNING 0
|
|
#define LLC_TIMER_RUNNING 1
|
|
#define LLC_TIMER_EXPIRED 2
|
|
|
|
#define LLC_STARTTIMER(l, LLCtimer) { \
|
|
(l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = llc_##LLCtimer##_timer; \
|
|
(l)->llcl_timerflags |= (1<<LLC_##LLCtimer##_SHIFT); \
|
|
}
|
|
#define LLC_STOPTIMER(l, LLCtimer) { \
|
|
(l)->llcl_timers[LLC_##LLCtimer##_SHIFT] = 0; \
|
|
(l)->llcl_timerflags &= ~(1<<LLC_##LLCtimer##_SHIFT); \
|
|
}
|
|
#define LLC_AGETIMER(l, LLCtimer) if ((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] > 0) \
|
|
(l)->llcl_timers[LLC_##LLCtimer##_SHIFT]--;
|
|
|
|
#define LLC_TIMERXPIRED(l, LLCtimer) \
|
|
(((l)->llcl_timerflags & (1<<LLC_##LLCtimer##_SHIFT)) ? \
|
|
(((l)->llcl_timers[LLC_##LLCtimer##_SHIFT] == 0 ) ? \
|
|
LLC_TIMER_EXPIRED : LLC_TIMER_RUNNING) : LLC_TIMER_NOTRUNNING)
|
|
|
|
#define FOR_ALL_LLC_TIMERS(t) for ((t) = LLC_ACK_SHIFT; (t) < LLC_AGE_SHIFT; (t)++)
|
|
|
|
#define LLC_SETFLAG(l, LLCflag, v) (l)->llcl_##LLCflag##_flag = (v)
|
|
#define LLC_GETFLAG(l, LLCflag) (l)->llcl_##LLCflag##_flag
|
|
|
|
#define LLC_RESETCOUNTER(l) { \
|
|
(l)->llcl_vs = (l)->llcl_vr = (l)->llcl_retry = 0; \
|
|
llc_resetwindow((l)); \
|
|
}
|
|
|
|
/*
|
|
* LLC2 macro definitions
|
|
*/
|
|
|
|
|
|
#define LLC_START_ACK_TIMER(l) LLC_STARTTIMER((l), ACK)
|
|
#define LLC_STOP_ACK_TIMER(l) LLC_STOPTIMER((l), ACK)
|
|
#define LLC_START_REJ_TIMER(l) LLC_STARTTIMER((l), REJ)
|
|
#define LLC_STOP_REJ_TIMER(l) LLC_STOPTIMER((l), REJ)
|
|
#define LLC_START_P_TIMER(l) { \
|
|
LLC_STARTTIMER((l), P); \
|
|
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
|