cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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msg_prot.h (6222B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * linux/include/linux/sunrpc/msg_prot.h
      4 *
      5 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
      6 */
      7
      8#ifndef _LINUX_SUNRPC_MSGPROT_H_
      9#define _LINUX_SUNRPC_MSGPROT_H_
     10
     11#define RPC_VERSION 2
     12
     13/* spec defines authentication flavor as an unsigned 32 bit integer */
     14typedef u32	rpc_authflavor_t;
     15
     16enum rpc_auth_flavors {
     17	RPC_AUTH_NULL  = 0,
     18	RPC_AUTH_UNIX  = 1,
     19	RPC_AUTH_SHORT = 2,
     20	RPC_AUTH_DES   = 3,
     21	RPC_AUTH_KRB   = 4,
     22	RPC_AUTH_GSS   = 6,
     23	RPC_AUTH_TLS   = 7,
     24	RPC_AUTH_MAXFLAVOR = 8,
     25	/* pseudoflavors: */
     26	RPC_AUTH_GSS_KRB5  = 390003,
     27	RPC_AUTH_GSS_KRB5I = 390004,
     28	RPC_AUTH_GSS_KRB5P = 390005,
     29	RPC_AUTH_GSS_LKEY  = 390006,
     30	RPC_AUTH_GSS_LKEYI = 390007,
     31	RPC_AUTH_GSS_LKEYP = 390008,
     32	RPC_AUTH_GSS_SPKM  = 390009,
     33	RPC_AUTH_GSS_SPKMI = 390010,
     34	RPC_AUTH_GSS_SPKMP = 390011,
     35};
     36
     37/* Maximum size (in bytes) of an rpc credential or verifier */
     38#define RPC_MAX_AUTH_SIZE (400)
     39
     40enum rpc_msg_type {
     41	RPC_CALL = 0,
     42	RPC_REPLY = 1
     43};
     44
     45enum rpc_reply_stat {
     46	RPC_MSG_ACCEPTED = 0,
     47	RPC_MSG_DENIED = 1
     48};
     49
     50enum rpc_accept_stat {
     51	RPC_SUCCESS = 0,
     52	RPC_PROG_UNAVAIL = 1,
     53	RPC_PROG_MISMATCH = 2,
     54	RPC_PROC_UNAVAIL = 3,
     55	RPC_GARBAGE_ARGS = 4,
     56	RPC_SYSTEM_ERR = 5,
     57	/* internal use only */
     58	RPC_DROP_REPLY = 60000,
     59};
     60
     61enum rpc_reject_stat {
     62	RPC_MISMATCH = 0,
     63	RPC_AUTH_ERROR = 1
     64};
     65
     66enum rpc_auth_stat {
     67	RPC_AUTH_OK = 0,
     68	RPC_AUTH_BADCRED = 1,
     69	RPC_AUTH_REJECTEDCRED = 2,
     70	RPC_AUTH_BADVERF = 3,
     71	RPC_AUTH_REJECTEDVERF = 4,
     72	RPC_AUTH_TOOWEAK = 5,
     73	/* RPCSEC_GSS errors */
     74	RPCSEC_GSS_CREDPROBLEM = 13,
     75	RPCSEC_GSS_CTXPROBLEM = 14
     76};
     77
     78#define RPC_MAXNETNAMELEN	256
     79
     80/*
     81 * From RFC 1831:
     82 *
     83 * "A record is composed of one or more record fragments.  A record
     84 *  fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of
     85 *  fragment data.  The bytes encode an unsigned binary number; as with
     86 *  XDR integers, the byte order is from highest to lowest.  The number
     87 *  encodes two values -- a boolean which indicates whether the fragment
     88 *  is the last fragment of the record (bit value 1 implies the fragment
     89 *  is the last fragment) and a 31-bit unsigned binary value which is the
     90 *  length in bytes of the fragment's data.  The boolean value is the
     91 *  highest-order bit of the header; the length is the 31 low-order bits.
     92 *  (Note that this record specification is NOT in XDR standard form!)"
     93 *
     94 * The Linux RPC client always sends its requests in a single record
     95 * fragment, limiting the maximum payload size for stream transports to
     96 * 2GB.
     97 */
     98
     99typedef __be32	rpc_fraghdr;
    100
    101#define	RPC_LAST_STREAM_FRAGMENT	(1U << 31)
    102#define	RPC_FRAGMENT_SIZE_MASK		(~RPC_LAST_STREAM_FRAGMENT)
    103#define	RPC_MAX_FRAGMENT_SIZE		((1U << 31) - 1)
    104
    105/*
    106 * RPC call and reply header size as number of 32bit words (verifier
    107 * size computed separately, see below)
    108 */
    109#define RPC_CALLHDRSIZE		(6)
    110#define RPC_REPHDRSIZE		(4)
    111
    112
    113/*
    114 * Maximum RPC header size, including authentication,
    115 * as number of 32bit words (see RFCs 1831, 1832).
    116 *
    117 *	xid			    1 xdr unit = 4 bytes
    118 *	mtype			    1
    119 *	rpc_version		    1
    120 *	program			    1
    121 *	prog_version		    1
    122 *	procedure		    1
    123 *	cred {
    124 *	    flavor		    1
    125 *	    length		    1
    126 *	    body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
    127 *	}
    128 *	verf {
    129 *	    flavor		    1
    130 *	    length		    1
    131 *	    body<RPC_MAX_AUTH_SIZE> 100 xdr units = 400 bytes
    132 *	}
    133 *	TOTAL			    210 xdr units = 840 bytes
    134 */
    135#define RPC_MAX_HEADER_WITH_AUTH \
    136	(RPC_CALLHDRSIZE + 2*(2+RPC_MAX_AUTH_SIZE/4))
    137
    138#define RPC_MAX_REPHEADER_WITH_AUTH \
    139	(RPC_REPHDRSIZE + (2 + RPC_MAX_AUTH_SIZE/4))
    140
    141/*
    142 * Well-known netids. See:
    143 *
    144 *   https://www.iana.org/assignments/rpc-netids/rpc-netids.xhtml
    145 */
    146#define RPCBIND_NETID_UDP	"udp"
    147#define RPCBIND_NETID_TCP	"tcp"
    148#define RPCBIND_NETID_RDMA	"rdma"
    149#define RPCBIND_NETID_SCTP	"sctp"
    150#define RPCBIND_NETID_UDP6	"udp6"
    151#define RPCBIND_NETID_TCP6	"tcp6"
    152#define RPCBIND_NETID_RDMA6	"rdma6"
    153#define RPCBIND_NETID_SCTP6	"sctp6"
    154#define RPCBIND_NETID_LOCAL	"local"
    155
    156/*
    157 * Note that RFC 1833 does not put any size restrictions on the
    158 * netid string, but all currently defined netid's fit in 5 bytes.
    159 */
    160#define RPCBIND_MAXNETIDLEN	(5u)
    161
    162/*
    163 * Universal addresses are introduced in RFC 1833 and further spelled
    164 * out in RFC 3530.  RPCBIND_MAXUADDRLEN defines a maximum byte length
    165 * of a universal address for use in allocating buffers and character
    166 * arrays.
    167 *
    168 * Quoting RFC 3530, section 2.2:
    169 *
    170 * For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
    171 * US-ASCII string:
    172 *
    173 *	h1.h2.h3.h4.p1.p2
    174 *
    175 * The prefix, "h1.h2.h3.h4", is the standard textual form for
    176 * representing an IPv4 address, which is always four octets long.
    177 * Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
    178 * the first through fourth octets each converted to ASCII-decimal.
    179 * Assuming big-endian ordering, p1 and p2 are, respectively, the first
    180 * and second octets each converted to ASCII-decimal.  For example, if a
    181 * host, in big-endian order, has an address of 0x0A010307 and there is
    182 * a service listening on, in big endian order, port 0x020F (decimal
    183 * 527), then the complete universal address is "10.1.3.7.2.15".
    184 *
    185 * ...
    186 *
    187 * For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
    188 * US-ASCII string:
    189 *
    190 *	x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
    191 *
    192 * The suffix "p1.p2" is the service port, and is computed the same way
    193 * as with universal addresses for TCP and UDP over IPv4.  The prefix,
    194 * "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
    195 * representing an IPv6 address as defined in Section 2.2 of [RFC2373].
    196 * Additionally, the two alternative forms specified in Section 2.2 of
    197 * [RFC2373] are also acceptable.
    198 */
    199
    200#include <linux/inet.h>
    201
    202/* Maximum size of the port number part of a universal address */
    203#define RPCBIND_MAXUADDRPLEN	sizeof(".255.255")
    204
    205/* Maximum size of an IPv4 universal address */
    206#define RPCBIND_MAXUADDR4LEN	\
    207		(INET_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
    208
    209/* Maximum size of an IPv6 universal address */
    210#define RPCBIND_MAXUADDR6LEN	\
    211		(INET6_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
    212
    213/* Assume INET6_ADDRSTRLEN will always be larger than INET_ADDRSTRLEN... */
    214#define RPCBIND_MAXUADDRLEN	RPCBIND_MAXUADDR6LEN
    215
    216#endif /* _LINUX_SUNRPC_MSGPROT_H_ */