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NetBSD/sys/netccitt/llc_var.h

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/* $NetBSD: llc_var.h,v 1.6 1997/05/02 21:10:15 christos Exp $ */
/*
* 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
*/
struct llc;
#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 *,...));
void *(*SI_ctlinput)
__P((int,struct sockaddr *,void *));
} 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.frmr_rej_pdu0
#define llcl_frmr_pdu1 llcl_frmrinfo.frmr_rej_pdu1
#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 = __CONCAT(llc_state_,LLCstate)
#define LLC_STATEEQ(l,LLCstate) \
((l)->llcl_statehandler == __CONCAT(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
#ifndef __CONCAT3
# if __STDC__
# define __CONCAT3(a,b,c) a ## b ## c
# else
# define __CONCAT3(a,b,c) a/**/b/**/c
# endif /* __STDC__ */
#endif
#define LLC_STARTTIMER(l,LLCtimer) { \
(l)->llcl_timers[__CONCAT3(LLC_,LLCtimer,_SHIFT)] = \
__CONCAT3(llc_,LLCtimer,_timer); \
(l)->llcl_timerflags |= (1 << __CONCAT3(LLC_,LLCtimer,_SHIFT)); \
}
#define LLC_STOPTIMER(l,LLCtimer) { \
(l)->llcl_timers[__CONCAT3(LLC_,LLCtimer,_SHIFT)] = 0; \
(l)->llcl_timerflags &= ~(1<<__CONCAT3(LLC_,LLCtimer,_SHIFT)); \
}
#define LLC_AGETIMER(l,LLCtimer) \
if ((l)->llcl_timers[__CONCAT3(LLC_,LLCtimer,_SHIFT)] > 0) \
(l)->llcl_timers[__CONCAT3(LLC_,LLCtimer,_SHIFT)]--;
#define LLC_TIMERXPIRED(l,LLCtimer) \
(((l)->llcl_timerflags & (1<<__CONCAT3(LLC_,LLCtimer,_SHIFT))) ? \
(((l)->llcl_timers[__CONCAT3(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)->__CONCAT3(llcl_,LLCflag,_flag) = (v)
#define LLC_GETFLAG(l,LLCflag) (l)->__CONCAT3(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; \
seq = llc_seq2slot((l),(l)->llcl_nr_received); \
if ((_m = (l)->llcl_output_buffers[seq]) != NULL) \
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
*/
/* llc_input.c */
void llcintr __P((void));
int llc_input __P((struct mbuf *, ...));
void *llc_ctlinput __P((int, struct sockaddr *, void *));
/* llc_output.c */
int llc_output __P((struct mbuf *, ...));
void llc_start __P((struct llc_linkcb *));
void llc_send __P((struct llc_linkcb *, int, int, int));
void llc_resend __P((struct llc_linkcb *, int, int));
void llc_rawsend __P((struct llc_linkcb *, struct mbuf *, struct llc *, int,
int, int, int));
/* llc_subr.c */
int sdl_cmp __P((struct sockaddr_dl *, struct sockaddr_dl *));
void sdl_copy __P((struct sockaddr_dl *, struct sockaddr_dl *));
void sdl_swapaddr __P((struct sockaddr_dl *, struct sockaddr_dl *));
struct sockaddr_dl *sdl_getaddrif __P((struct ifnet *));
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 *));
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));
void llc_init __P((void));
void llc_resetwindow __P((struct llc_linkcb *));
struct llc_linkcb *llc_newlink __P((struct sockaddr_dl *, struct ifnet *,
struct rtentry *, caddr_t,
struct rtentry *));
void llc_dellink __P((struct llc_linkcb *));
int llc_decode __P((struct llc *, 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 *));
/* llc_timer.c */
void llc_timer __P((void));
#endif
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