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1da177e4 | 1 | /* |
f30c2269 | 2 | * linux/include/linux/sunrpc/msg_prot.h |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> | |
5 | */ | |
6 | ||
7 | #ifndef _LINUX_SUNRPC_MSGPROT_H_ | |
8 | #define _LINUX_SUNRPC_MSGPROT_H_ | |
9 | ||
10 | #ifdef __KERNEL__ /* user programs should get these from the rpc header files */ | |
11 | ||
12 | #define RPC_VERSION 2 | |
13 | ||
7adae489 GB |
14 | /* size of an XDR encoding unit in bytes, i.e. 32bit */ |
15 | #define XDR_UNIT (4) | |
16 | ||
1da177e4 LT |
17 | /* spec defines authentication flavor as an unsigned 32 bit integer */ |
18 | typedef u32 rpc_authflavor_t; | |
19 | ||
20 | enum rpc_auth_flavors { | |
21 | RPC_AUTH_NULL = 0, | |
22 | RPC_AUTH_UNIX = 1, | |
23 | RPC_AUTH_SHORT = 2, | |
24 | RPC_AUTH_DES = 3, | |
25 | RPC_AUTH_KRB = 4, | |
26 | RPC_AUTH_GSS = 6, | |
27 | RPC_AUTH_MAXFLAVOR = 8, | |
28 | /* pseudoflavors: */ | |
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, | |
38 | }; | |
39 | ||
7adae489 GB |
40 | /* Maximum size (in bytes) of an rpc credential or verifier */ |
41 | #define RPC_MAX_AUTH_SIZE (400) | |
42 | ||
1da177e4 LT |
43 | enum rpc_msg_type { |
44 | RPC_CALL = 0, | |
45 | RPC_REPLY = 1 | |
46 | }; | |
47 | ||
48 | enum rpc_reply_stat { | |
49 | RPC_MSG_ACCEPTED = 0, | |
50 | RPC_MSG_DENIED = 1 | |
51 | }; | |
52 | ||
53 | enum rpc_accept_stat { | |
54 | RPC_SUCCESS = 0, | |
55 | RPC_PROG_UNAVAIL = 1, | |
56 | RPC_PROG_MISMATCH = 2, | |
57 | RPC_PROC_UNAVAIL = 3, | |
58 | RPC_GARBAGE_ARGS = 4, | |
d343fce1 N |
59 | RPC_SYSTEM_ERR = 5, |
60 | /* internal use only */ | |
61 | RPC_DROP_REPLY = 60000, | |
1da177e4 LT |
62 | }; |
63 | ||
64 | enum rpc_reject_stat { | |
65 | RPC_MISMATCH = 0, | |
66 | RPC_AUTH_ERROR = 1 | |
67 | }; | |
68 | ||
69 | enum rpc_auth_stat { | |
70 | RPC_AUTH_OK = 0, | |
71 | RPC_AUTH_BADCRED = 1, | |
72 | RPC_AUTH_REJECTEDCRED = 2, | |
73 | RPC_AUTH_BADVERF = 3, | |
74 | RPC_AUTH_REJECTEDVERF = 4, | |
75 | RPC_AUTH_TOOWEAK = 5, | |
76 | /* RPCSEC_GSS errors */ | |
77 | RPCSEC_GSS_CREDPROBLEM = 13, | |
78 | RPCSEC_GSS_CTXPROBLEM = 14 | |
79 | }; | |
80 | ||
1da177e4 LT |
81 | #define RPC_MAXNETNAMELEN 256 |
82 | ||
808012fb CL |
83 | /* |
84 | * From RFC 1831: | |
85 | * | |
86 | * "A record is composed of one or more record fragments. A record | |
87 | * fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of | |
88 | * fragment data. The bytes encode an unsigned binary number; as with | |
89 | * XDR integers, the byte order is from highest to lowest. The number | |
90 | * encodes two values -- a boolean which indicates whether the fragment | |
91 | * is the last fragment of the record (bit value 1 implies the fragment | |
92 | * is the last fragment) and a 31-bit unsigned binary value which is the | |
93 | * length in bytes of the fragment's data. The boolean value is the | |
94 | * highest-order bit of the header; the length is the 31 low-order bits. | |
95 | * (Note that this record specification is NOT in XDR standard form!)" | |
96 | * | |
97 | * The Linux RPC client always sends its requests in a single record | |
98 | * fragment, limiting the maximum payload size for stream transports to | |
99 | * 2GB. | |
100 | */ | |
101 | ||
d8ed029d | 102 | typedef __be32 rpc_fraghdr; |
808012fb CL |
103 | |
104 | #define RPC_LAST_STREAM_FRAGMENT (1U << 31) | |
105 | #define RPC_FRAGMENT_SIZE_MASK (~RPC_LAST_STREAM_FRAGMENT) | |
106 | #define RPC_MAX_FRAGMENT_SIZE ((1U << 31) - 1) | |
107 | ||
7adae489 GB |
108 | /* |
109 | * RPC call and reply header size as number of 32bit words (verifier | |
110 | * size computed separately, see below) | |
111 | */ | |
112 | #define RPC_CALLHDRSIZE (6) | |
113 | #define RPC_REPHDRSIZE (4) | |
114 | ||
115 | ||
116 | /* | |
117 | * Maximum RPC header size, including authentication, | |
118 | * as number of 32bit words (see RFCs 1831, 1832). | |
119 | * | |
120 | * xid 1 xdr unit = 4 bytes | |
121 | * mtype 1 | |
122 | * rpc_version 1 | |
123 | * program 1 | |
124 | * prog_version 1 | |
125 | * procedure 1 | |
126 | * cred { | |
127 | * flavor 1 | |
128 | * length 1 | |
129 | * body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes | |
130 | * } | |
131 | * verf { | |
132 | * flavor 1 | |
133 | * length 1 | |
134 | * body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes | |
135 | * } | |
136 | * TOTAL 210 xdr units = 840 bytes | |
137 | */ | |
138 | #define RPC_MAX_HEADER_WITH_AUTH \ | |
139 | (RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4)) | |
140 | ||
141 | ||
1da177e4 LT |
142 | #endif /* __KERNEL__ */ |
143 | #endif /* _LINUX_SUNRPC_MSGPROT_H_ */ |