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authorPer Liden <per.liden@nospam.ericsson.com>2006-01-02 19:04:38 +0100
committerDavid S. Miller <davem@sunset.davemloft.net>2006-01-12 14:06:31 -0800
commitb97bf3fd8f6a16966d4f18983b2c40993ff937d4 (patch)
tree59959f8a0f3087455efdcb430846686f303c5991 /net/tipc/addr.c
parent58cba4650a7a414eabd2b40cc9d8e45fcdf192d9 (diff)
downloadlwn-b97bf3fd8f6a16966d4f18983b2c40993ff937d4.tar.gz
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[TIPC] Initial merge
TIPC (Transparent Inter Process Communication) is a protocol designed for intra cluster communication. For more information see http://tipc.sourceforge.net Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
Diffstat (limited to 'net/tipc/addr.c')
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diff --git a/net/tipc/addr.c b/net/tipc/addr.c
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+/*
+ * net/tipc/addr.c: TIPC address utility routines
+ *
+ * Copyright (c) 2003-2005, Ericsson Research Canada
+ * Copyright (c) 2004-2005, Wind River Systems
+ * Copyright (c) 2005-2006, Ericsson AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * Neither the names of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "core.h"
+#include "dbg.h"
+#include "addr.h"
+#include "zone.h"
+#include "cluster.h"
+#include "net.h"
+
+u32 tipc_get_addr(void)
+{
+ return tipc_own_addr;
+}
+
+/**
+ * addr_domain_valid - validates a network domain address
+ *
+ * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,
+ * where Z, C, and N are non-zero and do not exceed the configured limits.
+ *
+ * Returns 1 if domain address is valid, otherwise 0
+ */
+
+int addr_domain_valid(u32 addr)
+{
+ u32 n = tipc_node(addr);
+ u32 c = tipc_cluster(addr);
+ u32 z = tipc_zone(addr);
+ u32 max_nodes = tipc_max_nodes;
+
+ if (is_slave(addr))
+ max_nodes = LOWEST_SLAVE + tipc_max_slaves;
+ if (n > max_nodes)
+ return 0;
+ if (c > tipc_max_clusters)
+ return 0;
+ if (z > tipc_max_zones)
+ return 0;
+
+ if (n && (!z || !c))
+ return 0;
+ if (c && !z)
+ return 0;
+ return 1;
+}
+
+/**
+ * addr_node_valid - validates a proposed network address for this node
+ *
+ * Accepts <Z.C.N>, where Z, C, and N are non-zero and do not exceed
+ * the configured limits.
+ *
+ * Returns 1 if address can be used, otherwise 0
+ */
+
+int addr_node_valid(u32 addr)
+{
+ return (addr_domain_valid(addr) && tipc_node(addr));
+}
+