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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [sunrpc/] [msg_prot.h] - Blame information for rev 62

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1 62 marcus.erl 
/*
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 * linux/include/linux/sunrpc/msg_prot.h
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 *
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 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
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 */
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#ifndef _LINUX_SUNRPC_MSGPROT_H_
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#define _LINUX_SUNRPC_MSGPROT_H_
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#ifdef __KERNEL__ /* user programs should get these from the rpc header files */
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#define RPC_VERSION 2
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/* size of an XDR encoding unit in bytes, i.e. 32bit */
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#define XDR_UNIT        (4)
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/* spec defines authentication flavor as an unsigned 32 bit integer */
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typedef u32     rpc_authflavor_t;
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enum rpc_auth_flavors {
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        RPC_AUTH_NULL  = 0,
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        RPC_AUTH_UNIX  = 1,
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        RPC_AUTH_SHORT = 2,
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        RPC_AUTH_DES   = 3,
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        RPC_AUTH_KRB   = 4,
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        RPC_AUTH_GSS   = 6,
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        RPC_AUTH_MAXFLAVOR = 8,
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        /* pseudoflavors: */
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        RPC_AUTH_GSS_KRB5  = 390003,
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        RPC_AUTH_GSS_KRB5I = 390004,
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        RPC_AUTH_GSS_KRB5P = 390005,
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        RPC_AUTH_GSS_LKEY  = 390006,
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        RPC_AUTH_GSS_LKEYI = 390007,
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        RPC_AUTH_GSS_LKEYP = 390008,
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        RPC_AUTH_GSS_SPKM  = 390009,
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        RPC_AUTH_GSS_SPKMI = 390010,
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        RPC_AUTH_GSS_SPKMP = 390011,
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};
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/* Maximum size (in bytes) of an rpc credential or verifier */
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#define RPC_MAX_AUTH_SIZE (400)
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enum rpc_msg_type {
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        RPC_CALL = 0,
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        RPC_REPLY = 1
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};
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enum rpc_reply_stat {
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        RPC_MSG_ACCEPTED = 0,
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        RPC_MSG_DENIED = 1
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};
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enum rpc_accept_stat {
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        RPC_SUCCESS = 0,
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        RPC_PROG_UNAVAIL = 1,
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        RPC_PROG_MISMATCH = 2,
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        RPC_PROC_UNAVAIL = 3,
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        RPC_GARBAGE_ARGS = 4,
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        RPC_SYSTEM_ERR = 5,
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        /* internal use only */
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        RPC_DROP_REPLY = 60000,
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};
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enum rpc_reject_stat {
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        RPC_MISMATCH = 0,
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        RPC_AUTH_ERROR = 1
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};
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enum rpc_auth_stat {
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        RPC_AUTH_OK = 0,
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        RPC_AUTH_BADCRED = 1,
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        RPC_AUTH_REJECTEDCRED = 2,
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        RPC_AUTH_BADVERF = 3,
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        RPC_AUTH_REJECTEDVERF = 4,
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        RPC_AUTH_TOOWEAK = 5,
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        /* RPCSEC_GSS errors */
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        RPCSEC_GSS_CREDPROBLEM = 13,
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        RPCSEC_GSS_CTXPROBLEM = 14
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};
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#define RPC_MAXNETNAMELEN       256
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/*
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 * From RFC 1831:
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 *
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 * "A record is composed of one or more record fragments.  A record
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 *  fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
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 *  fragment data.  The bytes encode an unsigned binary number; as with
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 *  XDR integers, the byte order is from highest to lowest.  The number
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 *  encodes two values -- a boolean which indicates whether the fragment
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 *  is the last fragment of the record (bit value 1 implies the fragment
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 *  is the last fragment) and a 31-bit unsigned binary value which is the
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 *  length in bytes of the fragment's data.  The boolean value is the
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 *  highest-order bit of the header; the length is the 31 low-order bits.
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 *  (Note that this record specification is NOT in XDR standard form!)"
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 *
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 * The Linux RPC client always sends its requests in a single record
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 * fragment, limiting the maximum payload size for stream transports to
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 * 2GB.
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 */
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typedef __be32  rpc_fraghdr;
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#define RPC_LAST_STREAM_FRAGMENT        (1U << 31)
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#define RPC_FRAGMENT_SIZE_MASK          (~RPC_LAST_STREAM_FRAGMENT)
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#define RPC_MAX_FRAGMENT_SIZE           ((1U << 31) - 1)
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/*
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 * RPC call and reply header size as number of 32bit words (verifier
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 * size computed separately, see below)
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 */
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#define RPC_CALLHDRSIZE         (6)
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#define RPC_REPHDRSIZE          (4)
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/*
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 * Maximum RPC header size, including authentication,
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 * as number of 32bit words (see RFCs 1831, 1832).
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 *
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 *      xid                         1 xdr unit = 4 bytes
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 *      mtype                       1
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 *      rpc_version                 1
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 *      program                     1
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 *      prog_version                1
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 *      procedure                   1
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 *      cred {
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 *          flavor                  1
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 *          length                  1
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 *          body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
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 *      }
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 *      verf {
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 *          flavor                  1
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 *          length                  1
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 *          body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
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 *      }
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 *      TOTAL                       210 xdr units = 840 bytes
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 */
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#define RPC_MAX_HEADER_WITH_AUTH \
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        (RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
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/*
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 * RFC1833/RFC3530 rpcbind (v3+) well-known netid's.
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 */
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#define RPCBIND_NETID_UDP       "udp"
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#define RPCBIND_NETID_TCP       "tcp"
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#define RPCBIND_NETID_UDP6      "udp6"
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#define RPCBIND_NETID_TCP6      "tcp6"
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/*
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 * Note that RFC 1833 does not put any size restrictions on the
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 * netid string, but all currently defined netid's fit in 4 bytes.
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 */
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#define RPCBIND_MAXNETIDLEN     (4u)
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SUNRPC_MSGPROT_H_ */

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