[apple/xnu.git] / bsd / netat / appletalk.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 *
 * ORIGINS: 82
 *
 * (C) COPYRIGHT Apple Computer, Inc. 1992-1996
 * All Rights Reserved
 *
 */                                                                   

/* Miscellaneous definitions for AppleTalk used by all protocol 
 * modules.
 */

#ifndef _NETAT_APPLETALK_H_
#define _NETAT_APPLETALK_H_
#include <sys/appleapiopts.h>

#include <sys/types.h>
#include <sys/uio.h>

#ifdef __APPLE_API_OBSOLETE

/* 
   Non-aligned types are used in packet headers. 
*/

/* New fundemental types: non-aligned variations of u_short and u_long */
typedef u_char ua_short[2];		/* Unaligned short */
typedef u_char ua_long[4];		/* Unaligned long */

/* Two at_net typedefs; the first is aligned the other isn't */
typedef u_short at_net_al;		/* Aligned AppleTalk network number */
typedef ua_short at_net_unal;		/* Unaligned AppleTalk network number */

/* Miscellaneous types */
typedef u_char	at_node;		/* AppleTalk node number */
typedef u_char  at_socket;		/* AppleTalk socket number */

typedef at_net_unal at_net;	/* Default: Unaligned AppleTalk network number */
struct atalk_addr {
	u_char	atalk_unused;
	at_net	atalk_net;
	at_node	atalk_node;
};

/* Macros to manipulate unaligned fields */
#define	UAS_ASSIGN(x,s)	*(unsigned short *) &(x[0]) = (unsigned short) (s)
#define	UAS_UAS(x,y)	*(unsigned short *) &(x[0]) = *(unsigned short *) &(y[0])
#define	UAS_VALUE(x)	(*(unsigned short *) &(x[0]))
#define	UAL_ASSIGN(x,l)	*(unsigned long *) &(x[0]) = (unsigned long) (l)
#define	UAL_UAL(x,y)	*(unsigned long *) &(x[0]) = *(unsigned long *) &(y[0])
#define	UAL_VALUE(x)	(*(unsigned long *) &(x[0]))

/* Macros to manipulate at_net variables */
#define	NET_ASSIGN(x,s)	*(unsigned short *)&(x[0]) = (unsigned short)(s)
#define	NET_NET(x, y)	*(unsigned short *)&(x[0]) = *(unsigned short *)&(y[0])
#define	NET_VALUE(x)	(*(unsigned short *) &(x[0]))
#define ATALK_ASSIGN(a, net, node, unused ) \
  a.atalk_unused = unused; a.atalk_node = node; NET_ASSIGN(a.atalk_net, net)

#define NET_EQUAL(a, b)	(NET_VALUE(a) == NET_VALUE(b))
#define NET_NOTEQ(a, b)	(NET_VALUE(a) != NET_VALUE(b))
#define NET_EQUAL0(a)	(NET_VALUE(a) == 0)
#define NET_NOTEQ0(a)	(NET_VALUE(a) != 0)


/* 
   AppleTalk Internet Address 
*/

typedef struct at_inet {
	u_short	net;			/* Network Address */
	u_char	node;			/* Node number */
	u_char	socket;			/* Socket number */
} at_inet_t;

/*
   DDP Address for OT
*/

typedef struct ddp_addr {
	at_inet_t	inet;
	u_short		ddptype;
} ddp_addr_t;

/*
  AppleTalk address
*/

struct at_addr {
	u_short     s_net;		/* 16-bit network address */
	u_char      s_node;		/* 8-bit node # (1-0xfd) */
};

/*
  Appletalk sockaddr definition
*/
struct sockaddr_at {
	u_char  	sat_len;        /* total length */
	u_char  	sat_family;     /* address family (AF_APPLETALK) */
	u_char  	sat_port;	/* 8-bit "socket number" */
	struct at_addr 	sat_addr;	/* 16-bit "net" and 8-bit "node */
	char		sat_zero[8];	/* used for netrange in netatalk */
};

#define ATADDR_ANYNET	(u_short)0x0000
#define ATADDR_ANYNODE	(u_char)0x00
#define ATADDR_ANYPORT	(u_char)0x00

#define ATADDR_BCASTNODE (u_char)0xff	/* There is no BCAST for NET */

/* make sure the net, node and socket numbers are in legal range :
 *
 * Net#		0		Local Net
 *		1 - 0xfffe	Legal net nos
 *		0xffff		Reserved by Apple for future use.
 * Node#	0		Illegal
 *		1 - 0x7f	Legal (user node id's)
 *		0x80 - 0xfe	Legal (server node id's; 0xfe illegal in
 *				Phase II nodes)
 *		0xff		Broadcast
 * Socket#	0		Illegal
 *		1 - 0xfe	Legal
 *		0xff		Illegal
 */
#define valid_at_addr(addr) \
	((!(addr) || (addr)->net == 0xffff || (addr)->node == 0 || \
	  (addr)->socket == 0 || (addr)->socket == 0xff)? 0: 1)

/*** * ETHERTYPE_ definitions are in netinet/if_ether.h *** */
#define ETHERTYPE_AT    0x809B          /* AppleTalk protocol */
#define ETHERTYPE_AARP  0x80F3          /* AppleTalk ARP */

/* 
   DDP protocol types 
*/

#define DDP_RTMP          0x01
#define DDP_NBP           0x02
#define DDP_ATP           0x03
#define DDP_ECHO          0x04
#define DDP_RTMP_REQ      0x05
#define DDP_ZIP           0x06
#define DDP_ADSP          0x07

/* 
   Protocols for the socket API 
*/

#define ATPROTO_NONE  	0		/* no corresponding DDP type exists */

#define ATPROTO_ATP	DDP_ATP		/* must match DDP type */
#define ATPROTO_ADSP    DDP_ADSP	/* must match DDP type */

#define ATPROTO_DDP	249		/* *** to be eliminated eventually *** */
#define ATPROTO_LAP   	250 		/* *** to be eliminated eventually *** */

#define ATPROTO_AURP  	251		/* no corresponding DDP type exists */
#define ATPROTO_ASP	252		/* no corresponding DDP type exists */
#define ATPROTO_AFP	253		/* no corresponding DDP type exists */

#define ATPROTO_RAW	255		/* no corresponding DDP type exists */

/*
  Options for use with [gs]etsockopt at the DDP level.
  First word of comment is data type; bool is stored in int.
*/
#define DDP_CHKSUM_ON	1	/* int; default = FALSE;
				   DDP checksums should be used */
#define DDP_HDRINCL	2	/* int; default = FALSE;
				   header is included with data */
#define DDP_GETSOCKNAME	3	/* used to get ddp_addr_t */
#define DDP_SLFSND_ON	4	/* int; default = FALSE;
				   packets sent to the cable-multicast address
				   on this socket will be looped back */
#define DDP_STRIPHDR	5	/* int; default = FALSE;
				   drop DDP header on receive (raw) */

/* 
   AppleTalk protocol retry and timeout 
*/

typedef struct at_retry {
    short	interval;		/* Retry interval in seconds */
    short	retries;		/* Maximum number of retries */
    u_char      backoff;                /* Retry backoff, must be 1 through 4 */
} at_retry_t;

/* 
   Basic NBP Definitions needed for AppleTalk framework
*/

#define MAX_ZONES 50

#define NBP_NVE_STR_SIZE	32	/* Maximum NBP tuple string size */
typedef struct at_nvestr {
	u_char		len;
	u_char		str[NBP_NVE_STR_SIZE];
} at_nvestr_t;

/* Entity Name */
typedef struct at_entity {
	at_nvestr_t	object;
	at_nvestr_t	type;
	at_nvestr_t	zone;
} at_entity_t;

#define NBP_TUPLE_SIZE	((3*NBP_NVE_STR_SIZE)+3) 
			/* 3 for field lengths + 3*32 for three names */
typedef struct at_nbptuple {
	at_inet_t	enu_addr;
	u_char		enu_enum;
	at_entity_t 	enu_entity;
} at_nbptuple_t;

/* 
   Basic ATP Definitions needed for LibcAT 
*/

#define ATP_TRESP_MAX       8	/* Maximum number of Tresp pkts */

/* Response buffer structure for atp_sendreq() and atp_sendrsp() */
typedef	struct	at_resp {
	u_char	bitmap;				/* Bitmap of responses */
	u_char	filler[3];			/* Force 68K to RISC alignment */
	struct	iovec resp[ATP_TRESP_MAX];	/* Buffer for response data */
	long	userdata[ATP_TRESP_MAX];	/* Buffer for response user data */
} at_resp_t;

/* 
   Needed for ASP and ADSP 
*/

typedef struct {
	int  maxlen; /* max buffer length */
	int  len;    /* length of data */
	char *buf;   /* pointer to buffer */
} strbuf_t;

#define	IFID_HOME	1 		/* home port in ifID_table */

#define	ATALK_VALUE(a)		((*(u_long *) &(a))&0x00ffffff)
#define	ATALK_EQUAL(a, b)	(ATALK_VALUE(a) == ATALK_VALUE(b))

#define VERSION_LENGTH		80	/* length of version string */

/* struture containing general information regarding the state of
 * the Appletalk networking 
 */
typedef struct at_state {
	unsigned int	flags;		/* various init flags */
} at_state_t;

/*  at_state_t 'flags' defines */
#define AT_ST_STARTED		0x0001	/* set if protocol is fully enabled */
#define AT_ST_STARTING		0x0002	/* set if interfaces are configured */
#define AT_ST_MULTIHOME		0x0080	/* set if multihome mode */
#define AT_ST_ROUTER		0x0100	/* set if we are a router */
#define AT_ST_IF_CHANGED	0x0200	/* set when state of any I/F 
					   changes (for SNMP) */
#define AT_ST_RT_CHANGED	0x0400  /* route table changed (for SNMP)*/
#define AT_ST_ZT_CHANGED 	0x0800  /* zone table changed (for SNMP) */
#define AT_ST_NBP_CHANGED	0x1000  /* if nbp table changed (for SNMP)*/

#ifdef KERNEL_PRIVATE
extern at_state_t at_state;		/* global state of AT network */

#define ROUTING_MODE	(at_state.flags & AT_ST_ROUTER)
#define MULTIHOME_MODE	(at_state.flags & AT_ST_MULTIHOME)
#define MULTIPORT_MODE (ROUTING_MODE || MULTIHOME_MODE)
#endif /* KERNEL_PRIVATE */

/* defines originally from h/at_elap.h */
#define AT_ADDR			0
#define ET_ADDR			1
#define AT_ADDR_NO_LOOP		2	/* disables packets from looping back */

#endif /* __APPLE_API_OBSOLETE */
#endif /* _NETAT_APPLETALK_H_ */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
1c79356b	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
1c79356b A	21	*/
	22	/*
	23	*
	24	* ORIGINS: 82
	25	*
	26	* (C) COPYRIGHT Apple Computer, Inc. 1992-1996
	27	* All Rights Reserved
	28	*
	29	*/
	30
	31	/* Miscellaneous definitions for AppleTalk used by all protocol
	32	* modules.
	33	*/
	34
	35	#ifndef _NETAT_APPLETALK_H_
	36	#define _NETAT_APPLETALK_H_
9bccf70c	37	#include <sys/appleapiopts.h>
1c79356b A	38
	39	#include <sys/types.h>
	40	#include <sys/uio.h>
	41
91447636 A	42	#ifdef __APPLE_API_OBSOLETE
91447636 A	43
1c79356b A	44	/*
	45	Non-aligned types are used in packet headers.
	46	*/
	47
	48	/* New fundemental types: non-aligned variations of u_short and u_long */
	49	typedef u_char ua_short[2]; /* Unaligned short */
	50	typedef u_char ua_long[4]; /* Unaligned long */
	51
	52	/* Two at_net typedefs; the first is aligned the other isn't */
	53	typedef u_short at_net_al; /* Aligned AppleTalk network number */
	54	typedef ua_short at_net_unal; /* Unaligned AppleTalk network number */
	55
	56	/* Miscellaneous types */
	57	typedef u_char at_node; /* AppleTalk node number */
	58	typedef u_char at_socket; /* AppleTalk socket number */
	59
	60	typedef at_net_unal at_net; /* Default: Unaligned AppleTalk network number */
	61	struct atalk_addr {
	62	u_char atalk_unused;
	63	at_net atalk_net;
	64	at_node atalk_node;
	65	};
	66
	67	/* Macros to manipulate unaligned fields */
	68	#define UAS_ASSIGN(x,s) (unsigned short ) &(x[0]) = (unsigned short) (s)
	69	#define UAS_UAS(x,y) (unsigned short ) &(x[0]) = (unsigned short ) &(y[0])
	70	#define UAS_VALUE(x) ((unsigned short ) &(x[0]))
	71	#define UAL_ASSIGN(x,l) (unsigned long ) &(x[0]) = (unsigned long) (l)
	72	#define UAL_UAL(x,y) (unsigned long ) &(x[0]) = (unsigned long ) &(y[0])
	73	#define UAL_VALUE(x) ((unsigned long ) &(x[0]))
	74
	75	/* Macros to manipulate at_net variables */
6601e61a A	76	#define NET_ASSIGN(x,s) (unsigned short )&(x[0]) = (unsigned short)(s)
	77	#define NET_NET(x, y) (unsigned short )&(x[0]) = (unsigned short )&(y[0])
	78	#define NET_VALUE(x) ((unsigned short ) &(x[0]))
1c79356b A	79	#define ATALK_ASSIGN(a, net, node, unused ) \
	80	a.atalk_unused = unused; a.atalk_node = node; NET_ASSIGN(a.atalk_net, net)
	81
	82	#define NET_EQUAL(a, b) (NET_VALUE(a) == NET_VALUE(b))
	83	#define NET_NOTEQ(a, b) (NET_VALUE(a) != NET_VALUE(b))
	84	#define NET_EQUAL0(a) (NET_VALUE(a) == 0)
	85	#define NET_NOTEQ0(a) (NET_VALUE(a) != 0)
	86
	87
	88	/*
	89	AppleTalk Internet Address
	90	*/
	91
	92	typedef struct at_inet {
	93	u_short net; /* Network Address */
	94	u_char node; /* Node number */
	95	u_char socket; /* Socket number */
	96	} at_inet_t;
	97
	98	/*
	99	DDP Address for OT
	100	*/
	101
	102	typedef struct ddp_addr {
	103	at_inet_t inet;
	104	u_short ddptype;
	105	} ddp_addr_t;
	106
	107	/*
	108	AppleTalk address
	109	*/
	110
	111	struct at_addr {
	112	u_short s_net; /* 16-bit network address */
	113	u_char s_node; /* 8-bit node # (1-0xfd) */
	114	};
	115
	116	/*
	117	Appletalk sockaddr definition
	118	*/
	119	struct sockaddr_at {
	120	u_char sat_len; /* total length */
	121	u_char sat_family; /* address family (AF_APPLETALK) */
	122	u_char sat_port; /* 8-bit "socket number" */
	123	struct at_addr sat_addr; /* 16-bit "net" and 8-bit "node */
	124	char sat_zero[8]; /* used for netrange in netatalk */
	125	};
	126
	127	#define ATADDR_ANYNET (u_short)0x0000
	128	#define ATADDR_ANYNODE (u_char)0x00
	129	#define ATADDR_ANYPORT (u_char)0x00
	130
	131	#define ATADDR_BCASTNODE (u_char)0xff /* There is no BCAST for NET */
	132
	133	/* make sure the net, node and socket numbers are in legal range :
	134	*
	135	* Net# 0 Local Net
	136	* 1 - 0xfffe Legal net nos
	137	* 0xffff Reserved by Apple for future use.
	138	* Node# 0 Illegal
	139	* 1 - 0x7f Legal (user node id's)
	140	* 0x80 - 0xfe Legal (server node id's; 0xfe illegal in
	141	* Phase II nodes)
	142	* 0xff Broadcast
143	* Socket# 0 Illegal
144	* 1 - 0xfe Legal
145	* 0xff Illegal
146	*/
147	#define valid_at_addr(addr) \
148	((!(addr) \|\| (addr)->net == 0xffff \|\| (addr)->node == 0 \|\| \
149	(addr)->socket == 0 \|\| (addr)->socket == 0xff)? 0: 1)
150
151	/*** * ETHERTYPE_ definitions are in netinet/if_ether.h *** */
152	#define ETHERTYPE_AT 0x809B /* AppleTalk protocol */
153	#define ETHERTYPE_AARP 0x80F3 /* AppleTalk ARP */
154
155	/*
156	DDP protocol types
157	*/
158
159	#define DDP_RTMP 0x01
160	#define DDP_NBP 0x02
161	#define DDP_ATP 0x03
162	#define DDP_ECHO 0x04
163	#define DDP_RTMP_REQ 0x05
164	#define DDP_ZIP 0x06
165	#define DDP_ADSP 0x07
166
167	/*
168	Protocols for the socket API
169	*/
170
171	#define ATPROTO_NONE 0 /* no corresponding DDP type exists */
172
173	#define ATPROTO_ATP DDP_ATP /* must match DDP type */
174	#define ATPROTO_ADSP DDP_ADSP /* must match DDP type */
175
176	#define ATPROTO_DDP 249 /* * to be eliminated eventually * */
177	#define ATPROTO_LAP 250 /* * to be eliminated eventually * */
178
179	#define ATPROTO_AURP 251 /* no corresponding DDP type exists */
180	#define ATPROTO_ASP 252 /* no corresponding DDP type exists */
181	#define ATPROTO_AFP 253 /* no corresponding DDP type exists */
182
183	#define ATPROTO_RAW 255 /* no corresponding DDP type exists */
184
185	/*
186	Options for use with [gs]etsockopt at the DDP level.
187	First word of comment is data type; bool is stored in int.
188	*/
189	#define DDP_CHKSUM_ON 1 /* int; default = FALSE;
190	DDP checksums should be used */
191	#define DDP_HDRINCL 2 /* int; default = FALSE;
192	header is included with data */
193	#define DDP_GETSOCKNAME 3 /* used to get ddp_addr_t */
194	#define DDP_SLFSND_ON 4 /* int; default = FALSE;
195	packets sent to the cable-multicast address
196	on this socket will be looped back */
197	#define DDP_STRIPHDR 5 /* int; default = FALSE;
198	drop DDP header on receive (raw) */
199
200	/*
201	AppleTalk protocol retry and timeout
202	*/
203
204	typedef struct at_retry {
205	short interval; /* Retry interval in seconds */
206	short retries; /* Maximum number of retries */
207	u_char backoff; /* Retry backoff, must be 1 through 4 */
208	} at_retry_t;
209
210	/*
211	Basic NBP Definitions needed for AppleTalk framework
212	*/
213
214	#define MAX_ZONES 50
215
216	#define NBP_NVE_STR_SIZE 32 /* Maximum NBP tuple string size */
217	typedef struct at_nvestr {
218	u_char len;
219	u_char str[NBP_NVE_STR_SIZE];
220	} at_nvestr_t;
221
222	/* Entity Name */
223	typedef struct at_entity {
224	at_nvestr_t object;
225	at_nvestr_t type;
226	at_nvestr_t zone;
227	} at_entity_t;
228
229	#define NBP_TUPLE_SIZE ((3*NBP_NVE_STR_SIZE)+3)
230	/* 3 for field lengths + 332 for three names /
231	typedef struct at_nbptuple {
232	at_inet_t enu_addr;
233	u_char enu_enum;
234	at_entity_t enu_entity;
235	} at_nbptuple_t;
236
237	/*
238	Basic ATP Definitions needed for LibcAT
239	*/
240
241	#define ATP_TRESP_MAX 8 /* Maximum number of Tresp pkts */
242
243	/* Response buffer structure for atp_sendreq() and atp_sendrsp() */
244	typedef struct at_resp {
245	u_char bitmap; /* Bitmap of responses */
246	u_char filler[3]; /* Force 68K to RISC alignment */
247	struct iovec resp[ATP_TRESP_MAX]; /* Buffer for response data */
248	long userdata[ATP_TRESP_MAX]; /* Buffer for response user data */
249	} at_resp_t;
250
251	/*
252	Needed for ASP and ADSP
253	*/
254
255	typedef struct {
256	int maxlen; /* max buffer length */
257	int len; /* length of data */
258	char buf; / pointer to buffer */
259	} strbuf_t;
260
261	#define IFID_HOME 1 /* home port in ifID_table */
262
263	#define ATALK_VALUE(a) (((u_long ) &(a))&0x00ffffff)
6601e61a	264	#define ATALK_EQUAL(a, b) (ATALK_VALUE(a) == ATALK_VALUE(b))
1c79356b A	265
	266	#define VERSION_LENGTH 80 /* length of version string */
	267
	268	/* struture containing general information regarding the state of
	269	* the Appletalk networking
	270	*/
	271	typedef struct at_state {
	272	unsigned int flags; /* various init flags */
	273	} at_state_t;
	274
	275	/* at_state_t 'flags' defines */
9bccf70c A	276	#define AT_ST_STARTED 0x0001 /* set if protocol is fully enabled */
9bccf70c A	277	#define AT_ST_STARTING 0x0002 /* set if interfaces are configured */
1c79356b A	278	#define AT_ST_MULTIHOME 0x0080 /* set if multihome mode */
	279	#define AT_ST_ROUTER 0x0100 /* set if we are a router */
	280	#define AT_ST_IF_CHANGED 0x0200 /* set when state of any I/F
	281	changes (for SNMP) */
	282	#define AT_ST_RT_CHANGED 0x0400 /* route table changed (for SNMP)*/
	283	#define AT_ST_ZT_CHANGED 0x0800 /* zone table changed (for SNMP) */
	284	#define AT_ST_NBP_CHANGED 0x1000 /* if nbp table changed (for SNMP)*/
	285
91447636	286	#ifdef KERNEL_PRIVATE
1c79356b A	287	extern at_state_t at_state; /* global state of AT network */
	288
	289	#define ROUTING_MODE (at_state.flags & AT_ST_ROUTER)
	290	#define MULTIHOME_MODE (at_state.flags & AT_ST_MULTIHOME)
	291	#define MULTIPORT_MODE (ROUTING_MODE \|\| MULTIHOME_MODE)
91447636	292	#endif /* KERNEL_PRIVATE */
1c79356b A	293
	294	/* defines originally from h/at_elap.h */
	295	#define AT_ADDR 0
	296	#define ET_ADDR 1
	297	#define AT_ADDR_NO_LOOP 2 /* disables packets from looping back */
	298
91447636	299	#endif /* __APPLE_API_OBSOLETE */
1c79356b	300	#endif /* _NETAT_APPLETALK_H_ */