2 * Copyright (c) 1988, 1992 The University of Utah and the Center
3 * for Software Science (CSS).
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
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23 * This product includes software developed by the University of
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41 * from: @(#)rmp_var.h 8.1 (Berkeley) 6/4/93
43 * from: Utah Hdr: rmp_var.h 3.1 92/07/06
44 * Author: Jeff Forys, University of Utah CSS
50 * Possible values for "rmp_type" fields.
53 #define RMP_BOOT_REQ 1 /* boot request packet */
54 #define RMP_BOOT_REPL 129 /* boot reply packet */
55 #define RMP_READ_REQ 2 /* read request packet */
56 #define RMP_READ_REPL 130 /* read reply packet */
57 #define RMP_BOOT_DONE 3 /* boot complete packet */
63 #define RMP_VERSION 2 /* protocol version */
64 #define RMP_TIMEOUT 600 /* timeout connection after ten minutes */
65 #define RMP_PROBESID 0xffff /* session ID for probes */
66 #define RMP_HOSTLEN 13 /* max length of server's name */
67 #define RMP_MACHLEN 20 /* length of machine type field */
74 #define RMP_E_EOF 2 /* read reply: returned end of file */
75 #define RMP_E_ABORT 3 /* abort operation */
76 #define RMP_E_BUSY 4 /* boot reply: server busy */
77 #define RMP_E_TIMEOUT 5 /* lengthen time out (not implemented) */
78 #define RMP_E_NOFILE 16 /* boot reply: file does not exist */
79 #define RMP_E_OPENFILE 17 /* boot reply: file open failed */
80 #define RMP_E_NODFLT 18 /* boot reply: default file does not exist */
81 #define RMP_E_OPENDFLT 19 /* boot reply: default file open failed */
82 #define RMP_E_BADSID 25 /* read reply: bad session ID */
83 #define RMP_E_BADPACKET 27 /* Bad packet detected */
86 * RMPDATALEN is the maximum number of data octets that can be stuffed
87 * into an RMP packet. This excludes the 802.2 LLC w/HP extensions.
89 #define RMPDATALEN (RMP_MAX_PACKET - (sizeof(struct hp_hdr) + \
90 sizeof(struct hp_llc)))
93 * Define sizes of packets we send. Boot and Read replies are variable
94 * in length depending on the length of `s'.
96 * Also, define how much space `restofpkt' can take up for outgoing
97 * Boot and Read replies. Boot Request packets are effectively
98 * limited to 255 bytes due to the preceding 1-byte length field.
101 #define RMPBOOTSIZE(s) (sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
102 sizeof(struct rmp_boot_repl) + s - sizeof(restofpkt))
103 #define RMPREADSIZE(s) (sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
104 sizeof(struct rmp_read_repl) + s - sizeof(restofpkt) \
106 #define RMPDONESIZE (sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
107 sizeof(struct rmp_boot_done))
108 #define RMPBOOTDATA 255
109 #define RMPREADDATA (RMPDATALEN - \
110 (2*sizeof(u_int8_t)+sizeof(u_int16_t)+sizeof(u_word)))
113 * This protocol defines some field sizes as "rest of ethernet packet".
114 * There is no easy way to specify this in C, so we use a one character
115 * field to denote it, and index past it to the end of the packet.
118 typedef char restofpkt;
121 * Due to the RMP packet layout, we'll run into alignment problems
122 * on machines that can't access (or don't, by default, align) words
123 * on half-word boundaries. If you know that your machine does not suffer
124 * from this problem, add it to the vax/tahoe/m68k #define below.
126 * The following macros are used to deal with this problem:
127 * WORDZE(w) Return True if u_word `w' is zero, False otherwise.
128 * ZEROWORD(w) Set u_word `w' to zero.
129 * COPYWORD(w1,w2) Copy u_word `w1' to `w2'.
130 * GETWORD(w,i) Copy u_word `w' into int `i'.
131 * PUTWORD(i,w) Copy int `i' into u_word `w'.
133 * N.B. Endianness is handled by use of ntohl/htonl
135 #if defined(__vax__) || defined(__tahoe__) || defined(__m68k__)
137 typedef u_int32_t u_word;
139 #define WORDZE(w) ((w) == 0)
140 #define ZEROWORD(w) (w) = 0
141 #define COPYWORD(w1,w2) (w2) = (w1)
142 #define GETWORD(w, i) (i) = ntohl(w)
143 #define PUTWORD(i, w) (w) = htonl(i)
147 #define _WORD_HIGHPART 0
148 #define _WORD_LOWPART 1
150 typedef struct _uword { u_int16_t val[2]; } u_word;
153 ((w.val[_WORD_HIGHPART] == 0) && (w.val[_WORD_LOWPART] == 0))
154 #define ZEROWORD(w) \
155 (w).val[_WORD_HIGHPART] = (w).val[_WORD_LOWPART] = 0
156 #define COPYWORD(w1, w2) \
157 { (w2).val[_WORD_HIGHPART] = (w1).val[_WORD_HIGHPART]; \
158 (w2).val[_WORD_LOWPART] = (w1).val[_WORD_LOWPART]; \
160 #define GETWORD(w, i) \
161 (i) = (((u_int32_t)ntohs((w).val[_WORD_HIGHPART])) << 16) | ntohs((w).val[_WORD_LOWPART])
162 #define PUTWORD(i, w) \
163 { (w).val[_WORD_HIGHPART] = htons((u_int16_t) ((i >> 16) & 0xffff)); \
164 (w).val[_WORD_LOWPART] = htons((u_int16_t) (i & 0xffff)); \
173 struct rmp_raw { /* generic RMP packet */
174 u_int8_t rmp_type; /* packet type */
175 u_int8_t rmp_rawdata[RMPDATALEN-1];
178 struct rmp_boot_req { /* boot request */
179 u_int8_t rmp_type; /* packet type (RMP_BOOT_REQ) */
180 u_int8_t rmp_retcode; /* return code (0) */
181 u_word rmp_seqno; /* sequence number (real time clock) */
182 u_int16_t rmp_session; /* session id (normally 0) */
183 u_int16_t rmp_version; /* protocol version (RMP_VERSION) */
184 char rmp_machtype[RMP_MACHLEN]; /* machine type */
185 u_int8_t rmp_flnmsize; /* length of rmp_flnm */
186 restofpkt rmp_flnm; /* name of file to be read */
189 struct rmp_boot_repl { /* boot reply */
190 u_int8_t rmp_type; /* packet type (RMP_BOOT_REPL) */
191 u_int8_t rmp_retcode; /* return code (normally 0) */
192 u_word rmp_seqno; /* sequence number (from boot req) */
193 u_int16_t rmp_session; /* session id (generated) */
194 u_int16_t rmp_version; /* protocol version (RMP_VERSION) */
195 u_int8_t rmp_flnmsize; /* length of rmp_flnm */
196 restofpkt rmp_flnm; /* name of file (from boot req) */
199 struct rmp_read_req { /* read request */
200 u_int8_t rmp_type; /* packet type (RMP_READ_REQ) */
201 u_int8_t rmp_retcode; /* return code (0) */
202 u_word rmp_offset; /* file relative byte offset */
203 u_int16_t rmp_session; /* session id (from boot repl) */
204 u_int16_t rmp_size; /* max no of bytes to send */
207 struct rmp_read_repl { /* read reply */
208 u_int8_t rmp_type; /* packet type (RMP_READ_REPL) */
209 u_int8_t rmp_retcode; /* return code (normally 0) */
210 u_word rmp_offset; /* byte offset (from read req) */
211 u_int16_t rmp_session; /* session id (from read req) */
212 restofpkt rmp_data; /* data (max size from read req) */
213 u_int8_t rmp_unused; /* padding to 16-bit boundary */
216 struct rmp_boot_done { /* boot complete */
217 u_int8_t rmp_type; /* packet type (RMP_BOOT_DONE) */
218 u_int8_t rmp_retcode; /* return code (0) */
219 u_word rmp_unused; /* not used (0) */
220 u_int16_t rmp_session; /* session id (from read repl) */
224 struct hp_hdr hp_hdr;
225 struct hp_llc hp_llc;
227 struct rmp_boot_req rmp_brq; /* boot request */
228 struct rmp_boot_repl rmp_brpl; /* boot reply */
229 struct rmp_read_req rmp_rrq; /* read request */
230 struct rmp_read_repl rmp_rrpl; /* read reply */
231 struct rmp_boot_done rmp_done; /* boot complete */
232 struct rmp_raw rmp_raw; /* raw data */
237 * Make life easier...
240 #define r_type rmp_proto.rmp_raw.rmp_type
241 #define r_data rmp_proto.rmp_raw.rmp_rawdata
242 #define r_brq rmp_proto.rmp_brq
243 #define r_brpl rmp_proto.rmp_brpl
244 #define r_rrq rmp_proto.rmp_rrq
245 #define r_rrpl rmp_proto.rmp_rrpl
246 #define r_done rmp_proto.rmp_done