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
26 #ifndef _NETATALK_DDP_H_
27 #define _NETATALK_DDP_H_
57 * On Apples, there is also a ddp_type field, after src_port. However, under
58 * this unix implementation, user level processes need to be able to set the
59 * ddp_type. In later revisions, the ddp_type may only be available in a
60 * raw_appletalk interface.
71 #define ELAP_DDPSHORT 0x01
72 #define ELAP_DDPEXTEND 0x02
75 * Extended DDP header. Includes sickness for dealing with arbitrary
76 * bitfields on a little-endian arch.
81 #if BYTE_ORDER == BIG_ENDIAN
87 #if BYTE_ORDER == LITTLE_ENDIAN
103 #define deh_pad deh_u.du_bits.dub_pad
104 #define deh_hops deh_u.du_bits.dub_hops
105 #define deh_len deh_u.du_bits.dub_len
106 #define deh_sum deh_u.du_bits.dub_sum
107 #define deh_bytes deh_u.du_bytes
109 #define DDP_MAXHOPS 15
114 #if BYTE_ORDER == BIG_ENDIAN
117 unsigned dub_dport:8;
118 unsigned dub_sport:8;
120 #if BYTE_ORDER == LITTLE_ENDIAN
121 unsigned dub_sport:8;
122 unsigned dub_dport:8;
131 #define dsh_pad dsh_u.du_bits.dub_pad
132 #define dsh_len dsh_u.du_bits.dub_len
133 #define dsh_dport dsh_u.du_bits.dub_dport
134 #define dsh_sport dsh_u.du_bits.dub_sport
135 #define dsh_bytes dsh_u.du_bytes
137 #endif /* _NETATALK_DDP_H_ */