[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>

1 files changed, 125 insertions, 0 deletions

diff --git a/net/tipc/addr.h b/net/tipc/addr.h
new file mode 100644
index 000000000000..9dabebcba6de
--- /dev/null
+++ b/net/tipc/addr.h
@@ -0,0 +1,125 @@
+/*
+ * net/tipc/addr.h: Include file for 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.
+ */
+
+#ifndef _TIPC_ADDR_H
+#define _TIPC_ADDR_H
+
+static inline u32 own_node(void)
+{
+        return tipc_node(tipc_own_addr);
+}
+
+static inline u32 own_cluster(void)
+{
+        return tipc_cluster(tipc_own_addr);
+}
+
+static inline u32 own_zone(void)
+{
+        return tipc_zone(tipc_own_addr);
+}
+
+static inline int in_own_cluster(u32 addr)
+{
+        return !((addr ^ tipc_own_addr) >> 12);
+}
+
+static inline int in_own_zone(u32 addr)
+{
+        return !((addr ^ tipc_own_addr) >> 24);
+}
+
+static inline int is_slave(u32 addr)
+{
+        return addr & 0x800;
+}
+
+static inline int may_route(u32 addr)
+{
+        return(addr ^ tipc_own_addr) >> 11;
+}
+
+static inline int in_scope(u32 domain, u32 addr)
+{
+        if (!domain || (domain == addr))
+                return 1;
+        if (domain == (addr & 0xfffff000u)) /* domain <Z.C.0> */
+                return 1;
+        if (domain == (addr & 0xff000000u)) /* domain <Z.0.0> */
+                return 1;
+        return 0;
+}
+
+/**
+ * addr_scope - convert message lookup domain to equivalent 2-bit scope value
+ */
+
+static inline int addr_scope(u32 domain)
+{
+        if (likely(!domain))
+                return TIPC_ZONE_SCOPE;
+        if (tipc_node(domain))
+                return TIPC_NODE_SCOPE;
+        if (tipc_cluster(domain))
+                return TIPC_CLUSTER_SCOPE;
+        return TIPC_ZONE_SCOPE;
+}
+
+/**
+ * addr_domain - convert 2-bit scope value to equivalent message lookup domain
+ *  
+ * Needed when address of a named message must be looked up a second time 
+ * after a network hop.
+ */
+
+static inline int addr_domain(int sc)
+{
+        if (likely(sc == TIPC_NODE_SCOPE))
+                return tipc_own_addr;
+        if (sc == TIPC_CLUSTER_SCOPE)
+                return tipc_addr(tipc_zone(tipc_own_addr),
+                                 tipc_cluster(tipc_own_addr), 0);
+        return tipc_addr(tipc_zone(tipc_own_addr), 0, 0);
+}
+
+static inline char *addr_string_fill(char *string, u32 addr)
+{
+        snprintf(string, 16, "<%u.%u.%u>",
+                 tipc_zone(addr), tipc_cluster(addr), tipc_node(addr));
+        return string;
+}
+
+int addr_domain_valid(u32);
+int addr_node_valid(u32 addr);
+
+#endif