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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_PMAP_PROGRAM 100000
- #define RPC_PMAP_VERSION 2
- #define RPC_PMAP_PORT 111
- #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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