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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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808012fbb2
Add a generic mechanism for skipping over transport-specific headers when constructing an RPC request. This removes another "xprt->stream" dependency. Test-plan: Write-intensive workload on a single mount point (try both UDP and TCP). Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* linux/include/net/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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/* 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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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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};
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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_PMAP_PROGRAM 100000
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#define RPC_PMAP_VERSION 2
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#define RPC_PMAP_PORT 111
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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 u32 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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#endif /* __KERNEL__ */
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#endif /* _LINUX_SUNRPC_MSGPROT_H_ */
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