--- /dev/null
+/*
+ * 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))
+
+#define RPC_MAX_REPHEADER_WITH_AUTH \
+ (RPC_REPHDRSIZE + (2 + RPC_MAX_AUTH_SIZE/4))
+
+/*
+ * Well-known netids. See:
+ *
+ * http://www.iana.org/assignments/rpc-netids/rpc-netids.xhtml
+ */
+#define RPCBIND_NETID_UDP "udp"
+#define RPCBIND_NETID_TCP "tcp"
+#define RPCBIND_NETID_RDMA "rdma"
+#define RPCBIND_NETID_SCTP "sctp"
+#define RPCBIND_NETID_UDP6 "udp6"
+#define RPCBIND_NETID_TCP6 "tcp6"
+#define RPCBIND_NETID_RDMA6 "rdma6"
+#define RPCBIND_NETID_SCTP6 "sctp6"
+#define RPCBIND_NETID_LOCAL "local"
+
+/*
+ * 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)
+
+/*
+ * Universal addresses are introduced in RFC 1833 and further spelled
+ * out in RFC 3530. RPCBIND_MAXUADDRLEN defines a maximum byte length
+ * of a universal address for use in allocating buffers and character
+ * arrays.
+ *
+ * Quoting RFC 3530, section 2.2:
+ *
+ * For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
+ * US-ASCII string:
+ *
+ * h1.h2.h3.h4.p1.p2
+ *
+ * The prefix, "h1.h2.h3.h4", is the standard textual form for
+ * representing an IPv4 address, which is always four octets long.
+ * Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
+ * the first through fourth octets each converted to ASCII-decimal.
+ * Assuming big-endian ordering, p1 and p2 are, respectively, the first
+ * and second octets each converted to ASCII-decimal. For example, if a
+ * host, in big-endian order, has an address of 0x0A010307 and there is
+ * a service listening on, in big endian order, port 0x020F (decimal
+ * 527), then the complete universal address is "10.1.3.7.2.15".
+ *
+ * ...
+ *
+ * For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
+ * US-ASCII string:
+ *
+ * x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
+ *
+ * The suffix "p1.p2" is the service port, and is computed the same way
+ * as with universal addresses for TCP and UDP over IPv4. The prefix,
+ * "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
+ * representing an IPv6 address as defined in Section 2.2 of [RFC2373].
+ * Additionally, the two alternative forms specified in Section 2.2 of
+ * [RFC2373] are also acceptable.
+ */
+
+#include <linux/inet.h>
+
+/* Maximum size of the port number part of a universal address */
+#define RPCBIND_MAXUADDRPLEN sizeof(".255.255")
+
+/* Maximum size of an IPv4 universal address */
+#define RPCBIND_MAXUADDR4LEN \
+ (INET_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
+
+/* Maximum size of an IPv6 universal address */
+#define RPCBIND_MAXUADDR6LEN \
+ (INET6_ADDRSTRLEN + RPCBIND_MAXUADDRPLEN)
+
+/* Assume INET6_ADDRSTRLEN will always be larger than INET_ADDRSTRLEN... */
+#define RPCBIND_MAXUADDRLEN RPCBIND_MAXUADDR6LEN
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_SUNRPC_MSGPROT_H_ */
Code Review / kvmfornfv.git / blobdiff