2 * linux/include/linux/sunrpc/msg_prot.h
4 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
7 #ifndef _LINUX_SUNRPC_MSGPROT_H_
8 #define _LINUX_SUNRPC_MSGPROT_H_
10 #ifdef __KERNEL__ /* user programs should get these from the rpc header files */
14 /* size of an XDR encoding unit in bytes, i.e. 32bit */
17 /* spec defines authentication flavor as an unsigned 32 bit integer */
18 typedef u32 rpc_authflavor_t;
20 enum rpc_auth_flavors {
27 RPC_AUTH_MAXFLAVOR = 8,
29 RPC_AUTH_GSS_KRB5 = 390003,
30 RPC_AUTH_GSS_KRB5I = 390004,
31 RPC_AUTH_GSS_KRB5P = 390005,
32 RPC_AUTH_GSS_LKEY = 390006,
33 RPC_AUTH_GSS_LKEYI = 390007,
34 RPC_AUTH_GSS_LKEYP = 390008,
35 RPC_AUTH_GSS_SPKM = 390009,
36 RPC_AUTH_GSS_SPKMI = 390010,
37 RPC_AUTH_GSS_SPKMP = 390011,
40 /* Maximum size (in bytes) of an rpc credential or verifier */
41 #define RPC_MAX_AUTH_SIZE (400)
53 enum rpc_accept_stat {
56 RPC_PROG_MISMATCH = 2,
60 /* internal use only */
61 RPC_DROP_REPLY = 60000,
64 enum rpc_reject_stat {
72 RPC_AUTH_REJECTEDCRED = 2,
74 RPC_AUTH_REJECTEDVERF = 4,
76 /* RPCSEC_GSS errors */
77 RPCSEC_GSS_CREDPROBLEM = 13,
78 RPCSEC_GSS_CTXPROBLEM = 14
81 #define RPC_PMAP_PROGRAM 100000
82 #define RPC_PMAP_VERSION 2
83 #define RPC_PMAP_PORT 111
85 #define RPC_MAXNETNAMELEN 256
90 * "A record is composed of one or more record fragments. A record
91 * fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
92 * fragment data. The bytes encode an unsigned binary number; as with
93 * XDR integers, the byte order is from highest to lowest. The number
94 * encodes two values -- a boolean which indicates whether the fragment
95 * is the last fragment of the record (bit value 1 implies the fragment
96 * is the last fragment) and a 31-bit unsigned binary value which is the
97 * length in bytes of the fragment's data. The boolean value is the
98 * highest-order bit of the header; the length is the 31 low-order bits.
99 * (Note that this record specification is NOT in XDR standard form!)"
101 * The Linux RPC client always sends its requests in a single record
102 * fragment, limiting the maximum payload size for stream transports to
106 typedef __be32 rpc_fraghdr;
108 #define RPC_LAST_STREAM_FRAGMENT (1U << 31)
109 #define RPC_FRAGMENT_SIZE_MASK (~RPC_LAST_STREAM_FRAGMENT)
110 #define RPC_MAX_FRAGMENT_SIZE ((1U << 31) - 1)
113 * RPC call and reply header size as number of 32bit words (verifier
114 * size computed separately, see below)
116 #define RPC_CALLHDRSIZE (6)
117 #define RPC_REPHDRSIZE (4)
121 * Maximum RPC header size, including authentication,
122 * as number of 32bit words (see RFCs 1831, 1832).
124 * xid 1 xdr unit = 4 bytes
133 * body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
138 * body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
140 * TOTAL 210 xdr units = 840 bytes
142 #define RPC_MAX_HEADER_WITH_AUTH \
143 (RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
146 #endif /* __KERNEL__ */
147 #endif /* _LINUX_SUNRPC_MSGPROT_H_ */