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
25 #define _ATALK_ATP_H 1
27 #include <sys/types.h>
29 #include <netatalk/at.h>
30 #include <netatalk/endian.h>
42 | control info | --> bits 7,6: function code
43 |----------------| 5: XO bit
44 | bitmap/seq no. | 4: EOM bit
45 |----------------| 3: STS bit
46 | TID (MSB) | 2,1,0: release timer code (ignored under phase I)
57 u_int8_t atphd_ctrlinfo; /* control information */
58 u_int8_t atphd_bitmap; /* bitmap or sequence number */
59 u_int16_t atphd_tid; /* transaction id. */
62 /* ATP protocol parameters
64 #define ATP_MAXDATA (578+4) /* maximum ATP data size */
65 #define ATP_BUFSIZ 587 /* maximum packet size */
66 #define ATP_HDRSIZE 5 /* includes DDP type field */
68 #define ATP_TRELMASK 0x07 /* mask all but TREL */
69 #define ATP_RELTIME 30 /* base release timer (in secs) */
71 #define ATP_TREL30 0x0 /* release time codes */
72 #define ATP_TREL1M 0x1 /* these are passed in flags of */
73 #define ATP_TREL2M 0x2 /* atp_sreq call, and set in the */
74 #define ATP_TREL4M 0x3 /* packet control info. */
75 #define ATP_TREL8M 0x4
77 #define ATP_TRIES_INFINITE -1 /* for atp_sreq, etc */
81 struct timeval atpxo_tv;
83 struct atpbuf *atpxo_packet[8];
87 struct atpbuf *atpbuf_next; /* next buffer in chain */
88 size_t atpbuf_dlen; /* data length <= ATP_BUFSIZ */
89 struct sockaddr_at atpbuf_addr; /* net address sent/recvd */
91 char atpbuf_data[ ATP_BUFSIZ ]; /* the data */
92 struct atpxobuf atpbuf_xo; /* for XO requests */
97 int atph_socket; /* ddp socket */
98 struct sockaddr_at atph_saddr; /* address */
99 u_int16_t atph_tid; /* last tid used */
100 u_int16_t atph_rtid; /* last received (rreq) */
101 u_int8_t atph_rxo; /* XO flag from last rreq */
102 int atph_rreltime; /* release time (secs) */
103 struct atpbuf *atph_sent; /* packets we send (XO) */
104 struct atpbuf *atph_queue; /* queue of pending packets */
105 int atph_reqtries; /* retry count for request */
106 int atph_reqto; /* retry timeout for request */
107 int atph_rrespcount; /* expected # of responses */
108 u_int8_t atph_rbitmap; /* bitmap for request */
109 struct atpbuf *atph_reqpkt; /* last request packet */
110 struct timeval atph_reqtv; /* when we last sent request */
111 struct atpbuf *atph_resppkt[8]; /* response to request */
114 typedef struct atp_handle *ATP;
116 #define atp_sockaddr( h ) (&(h)->atph_saddr)
117 #define atp_fileno(x) ((x)->atph_socket)
120 char *atpd_data; /* request data */
122 int atpd_tries; /* max. retry count */
123 int atpd_to; /* retry interval */
127 struct iovec *atpd_iov; /* for response */
132 char *atpd_data; /* request data */
137 struct iovec *atpd_iov; /* for response */
142 struct sockaddr_at *atp_saddr; /* from/to address */
144 struct sreq_st sreqdata;
145 #define atp_sreqdata atp_data.sreqdata.atpd_data
146 #define atp_sreqdlen atp_data.sreqdata.atpd_dlen
147 #define atp_sreqtries atp_data.sreqdata.atpd_tries
148 #define atp_sreqto atp_data.sreqdata.atpd_to
150 struct rres_st rresdata;
151 #define atp_rresiov atp_data.rresdata.atpd_iov
152 #define atp_rresiovcnt atp_data.rresdata.atpd_iovcnt
154 struct rreq_st rreqdata;
155 #define atp_rreqdata atp_data.rreqdata.atpd_data
156 #define atp_rreqdlen atp_data.rreqdata.atpd_dlen
158 struct sres_st sresdata;
159 #define atp_sresiov atp_data.sresdata.atpd_iov
160 #define atp_sresiovcnt atp_data.sresdata.atpd_iovcnt
162 u_int8_t atp_bitmap; /* response buffer bitmap */
166 /* flags for ATP options (and control byte)
168 #define ATP_STS (1<<3) /* Send Transaction Status */
169 #define ATP_EOM (1<<4) /* End Of Message */
170 #define ATP_XO (1<<5) /* eXactly Once mode */
174 #define ATP_FUNCMASK (3<<6) /* mask all but function */
176 #define ATP_TREQ (1<<6) /* Trans. REQuest */
177 #define ATP_TRESP (2<<6) /* Trans. RESPonse */
178 #define ATP_TREL (3<<6) /* Trans. RELease */
180 extern ATP atp_open (u_int8_t,
181 const struct at_addr *);
182 extern int atp_close (ATP);
183 extern int atp_sreq (ATP, struct atp_block *, int,
185 extern int atp_rresp (ATP, struct atp_block *);
186 extern int atp_rsel (ATP, struct sockaddr_at *, int);
187 extern int atp_rreq (ATP, struct atp_block *);
188 extern int atp_sresp (ATP, struct atp_block *);