2 * Copyright (c) 1990,1991 Regents of The University of Michigan.
5 * Permission to use, copy, modify, and distribute this software and
6 * its documentation for any purpose and without fee is hereby granted,
7 * provided that the above copyright notice appears in all copies and
8 * that both that copyright notice and this permission notice appear
9 * in supporting documentation, and that the name of The University
10 * of Michigan not be used in advertising or publicity pertaining to
11 * distribution of the software without specific, written prior
12 * permission. This software is supplied as is without expressed or
13 * implied warranties of any kind.
15 * Research Systems Unix Group
16 * The University of Michigan
18 * 535 W. William Street
21 * netatalk@itd.umich.edu
23 #ifndef _NETATALK_DDP_H_
24 #define _NETATALK_DDP_H_ 1
54 * On Apples, there is also a ddp_type field, after src_port. However,
55 * under this unix implementation, user level processes need to be able
56 * to set the ddp_type. In later revisions, the ddp_type may only be
57 * available in a raw_appletalk interface.
68 #define ELAP_DDPSHORT 0x01
69 #define ELAP_DDPEXTEND 0x02
72 * Extended DDP header. Includes sickness for dealing with arbitrary
73 * bitfields on a little-endian arch.
78 #if BYTE_ORDER == BIG_ENDIAN
84 #if BYTE_ORDER == LITTLE_ENDIAN
93 #define deh_pad deh_u.du_bits.dub_pad
94 #define deh_hops deh_u.du_bits.dub_hops
95 #define deh_len deh_u.du_bits.dub_len
96 #define deh_sum deh_u.du_bits.dub_sum
97 #define deh_bytes deh_u.du_bytes
106 #define DDP_MAXHOPS 15
111 #if BYTE_ORDER == BIG_ENDIAN
114 unsigned dub_dport:8;
115 unsigned dub_sport:8;
117 #if BYTE_ORDER == LITTLE_ENDIAN
118 unsigned dub_sport:8;
119 unsigned dub_dport:8;
126 #define dsh_pad dsh_u.du_bits.dub_pad
127 #define dsh_len dsh_u.du_bits.dub_len
128 #define dsh_dport dsh_u.du_bits.dub_dport
129 #define dsh_sport dsh_u.du_bits.dub_sport
130 #define dsh_bytes dsh_u.du_bytes
133 #endif /* _NETATALK_DDP_H_ */