[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both

Provide AF_RXRPC sockets that can be used to talk to AFS servers, or serve
answers to AFS clients.  KerberosIV security is fully supported.  The patches
and some example test programs can be found in:

	http://people.redhat.com/~dhowells/rxrpc/

This will eventually replace the old implementation of kernel-only RxRPC
currently resident in net/rxrpc/.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 62 insertions, 0 deletions

diff --git a/include/linux/rxrpc.h b/include/linux/rxrpc.h
new file mode 100644
index 000000000000..f7b826b565c7
--- /dev/null
+++ b/include/linux/rxrpc.h
@@ -0,0 +1,62 @@
+/* AF_RXRPC parameters
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _LINUX_RXRPC_H
+#define _LINUX_RXRPC_H
+
+#include <linux/in.h>
+#include <linux/in6.h>
+
+/*
+ * RxRPC socket address
+ */
+struct sockaddr_rxrpc {
+        sa_family_t     srx_family;     /* address family */
+        u16             srx_service;    /* service desired */
+        u16             transport_type; /* type of transport socket (SOCK_DGRAM) */
+        u16             transport_len;  /* length of transport address */
+        union {
+                sa_family_t family;             /* transport address family */
+                struct sockaddr_in sin;         /* IPv4 transport address */
+                struct sockaddr_in6 sin6;       /* IPv6 transport address */
+        } transport;
+};
+
+/*
+ * RxRPC socket options
+ */
+#define RXRPC_SECURITY_KEY              1       /* [clnt] set client security key */
+#define RXRPC_SECURITY_KEYRING          2       /* [srvr] set ring of server security keys */
+#define RXRPC_EXCLUSIVE_CONNECTION      3       /* [clnt] use exclusive RxRPC connection */
+#define RXRPC_MIN_SECURITY_LEVEL        4       /* minimum security level */
+
+/*
+ * RxRPC control messages
+ * - terminal messages mean that a user call ID tag can be recycled
+ */
+#define RXRPC_USER_CALL_ID      1       /* user call ID specifier */
+#define RXRPC_ABORT             2       /* abort request / notification [terminal] */
+#define RXRPC_ACK               3       /* [Server] RPC op final ACK received [terminal] */
+#define RXRPC_NET_ERROR         5       /* network error received [terminal] */
+#define RXRPC_BUSY              6       /* server busy received [terminal] */
+#define RXRPC_LOCAL_ERROR       7       /* local error generated [terminal] */
+#define RXRPC_NEW_CALL          8       /* [Server] new incoming call notification */
+#define RXRPC_ACCEPT            9       /* [Server] accept request */
+
+/*
+ * RxRPC security levels
+ */
+#define RXRPC_SECURITY_PLAIN    0       /* plain secure-checksummed packets only */
+#define RXRPC_SECURITY_AUTH     1       /* authenticated packets */
+#define RXRPC_SECURITY_ENCRYPT  2       /* encrypted packets */
+
+
+#endif /* _LINUX_RXRPC_H */