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/*
* linux/include/linux/sunrpc/msg_prot.h
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#ifndef _LINUX_SUNRPC_MSGPROT_H_
#define _LINUX_SUNRPC_MSGPROT_H_
#ifdef __KERNEL__ /* user programs should get these from the rpc header files */
#define RPC_VERSION 2
/* size of an XDR encoding unit in bytes, i.e. 32bit */
#define XDR_UNIT (4)
/* spec defines authentication flavor as an unsigned 32 bit integer */
typedef u32 rpc_authflavor_t;
enum rpc_auth_flavors {
RPC_AUTH_NULL = 0,
RPC_AUTH_UNIX = 1,
RPC_AUTH_SHORT = 2,
RPC_AUTH_DES = 3,
RPC_AUTH_KRB = 4,
RPC_AUTH_GSS = 6,
RPC_AUTH_MAXFLAVOR = 8,
/* pseudoflavors: */
RPC_AUTH_GSS_KRB5 = 390003,
RPC_AUTH_GSS_KRB5I = 390004,
RPC_AUTH_GSS_KRB5P = 390005,
RPC_AUTH_GSS_LKEY = 390006,
RPC_AUTH_GSS_LKEYI = 390007,
RPC_AUTH_GSS_LKEYP = 390008,
RPC_AUTH_GSS_SPKM = 390009,
RPC_AUTH_GSS_SPKMI = 390010,
RPC_AUTH_GSS_SPKMP = 390011,
};
/* Maximum size (in bytes) of an rpc credential or verifier */
#define RPC_MAX_AUTH_SIZE (400)
enum rpc_msg_type {
RPC_CALL = 0,
RPC_REPLY = 1
};
enum rpc_reply_stat {
RPC_MSG_ACCEPTED = 0,
RPC_MSG_DENIED = 1
};
enum rpc_accept_stat {
RPC_SUCCESS = 0,
RPC_PROG_UNAVAIL = 1,
RPC_PROG_MISMATCH = 2,
RPC_PROC_UNAVAIL = 3,
RPC_GARBAGE_ARGS = 4,
RPC_SYSTEM_ERR = 5,
/* internal use only */
RPC_DROP_REPLY = 60000,
};
enum rpc_reject_stat {
RPC_MISMATCH = 0,
RPC_AUTH_ERROR = 1
};
enum rpc_auth_stat {
RPC_AUTH_OK = 0,
RPC_AUTH_BADCRED = 1,
RPC_AUTH_REJECTEDCRED = 2,
RPC_AUTH_BADVERF = 3,
RPC_AUTH_REJECTEDVERF = 4,
RPC_AUTH_TOOWEAK = 5,
/* RPCSEC_GSS errors */
RPCSEC_GSS_CREDPROBLEM = 13,
RPCSEC_GSS_CTXPROBLEM = 14
};
#define RPC_MAXNETNAMELEN 256
/*
* From RFC 1831:
*
* "A record is composed of one or more record fragments. A record
* fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
* fragment data. The bytes encode an unsigned binary number; as with
* XDR integers, the byte order is from highest to lowest. The number
* encodes two values -- a boolean which indicates whether the fragment
* is the last fragment of the record (bit value 1 implies the fragment
* is the last fragment) and a 31-bit unsigned binary value which is the
* length in bytes of the fragment's data. The boolean value is the
* highest-order bit of the header; the length is the 31 low-order bits.
* (Note that this record specification is NOT in XDR standard form!)"
*
* The Linux RPC client always sends its requests in a single record
* fragment, limiting the maximum payload size for stream transports to
* 2GB.
*/
typedef __be32 rpc_fraghdr;
#define RPC_LAST_STREAM_FRAGMENT (1U << 31)
#define RPC_FRAGMENT_SIZE_MASK (~RPC_LAST_STREAM_FRAGMENT)
#define RPC_MAX_FRAGMENT_SIZE ((1U << 31) - 1)
/*
* RPC call and reply header size as number of 32bit words (verifier
* size computed separately, see below)
*/
#define RPC_CALLHDRSIZE (6)
#define RPC_REPHDRSIZE (4)
/*
* Maximum RPC header size, including authentication,
* as number of 32bit words (see RFCs 1831, 1832).
*
* xid 1 xdr unit = 4 bytes
* mtype 1
* rpc_version 1
* program 1
* prog_version 1
* procedure 1
* cred {
* flavor 1
* length 1
* body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
* }
* verf {
* flavor 1
* length 1
* body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
* }
* TOTAL 210 xdr units = 840 bytes
*/
#define RPC_MAX_HEADER_WITH_AUTH \
(RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_MSGPROT_H_ */
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