/* * 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)) /* * RFC1833/RFC3530 rpcbind (v3+) well-known netid's. */ #define RPCBIND_NETID_UDP "udp" #define RPCBIND_NETID_TCP "tcp" #define RPCBIND_NETID_UDP6 "udp6" #define RPCBIND_NETID_TCP6 "tcp6" /* * Note that RFC 1833 does not put any size restrictions on the * netid string, but all currently defined netid's fit in 4 bytes. */ #define RPCBIND_MAXNETIDLEN (4u) #endif /* __KERNEL__ */ #endif /* _LINUX_SUNRPC_MSGPROT_H_ */