From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/net/tipc/addr.c | 153 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 kernel/net/tipc/addr.c (limited to 'kernel/net/tipc/addr.c') diff --git a/kernel/net/tipc/addr.c b/kernel/net/tipc/addr.c new file mode 100644 index 000000000..ba7daa864 --- /dev/null +++ b/kernel/net/tipc/addr.c @@ -0,0 +1,153 @@ +/* + * net/tipc/addr.c: TIPC address utility routines + * + * Copyright (c) 2000-2006, Ericsson AB + * Copyright (c) 2004-2005, 2010-2011, Wind River Systems + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. 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. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * 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 +#include "addr.h" +#include "core.h" + +u32 tipc_own_addr(struct net *net) +{ + struct tipc_net *tn = net_generic(net, tipc_net_id); + + return tn->own_addr; +} + +/** + * in_own_cluster - test for cluster inclusion; <0.0.0> always matches + */ +int in_own_cluster(struct net *net, u32 addr) +{ + return in_own_cluster_exact(net, addr) || !addr; +} + +int in_own_cluster_exact(struct net *net, u32 addr) +{ + struct tipc_net *tn = net_generic(net, tipc_net_id); + + return !((addr ^ tn->own_addr) >> 12); +} + +/** + * in_own_node - test for node inclusion; <0.0.0> always matches + */ +int in_own_node(struct net *net, u32 addr) +{ + struct tipc_net *tn = net_generic(net, tipc_net_id); + + return (addr == tn->own_addr) || !addr; +} + +/** + * 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. + */ +u32 addr_domain(struct net *net, u32 sc) +{ + struct tipc_net *tn = net_generic(net, tipc_net_id); + + if (likely(sc == TIPC_NODE_SCOPE)) + return tn->own_addr; + if (sc == TIPC_CLUSTER_SCOPE) + return tipc_cluster_mask(tn->own_addr); + return tipc_zone_mask(tn->own_addr); +} + +/** + * tipc_addr_domain_valid - validates a network domain address + * + * Accepts , , , and <0.0.0>, + * where Z, C, and N are non-zero. + * + * Returns 1 if domain address is valid, otherwise 0 + */ +int tipc_addr_domain_valid(u32 addr) +{ + u32 n = tipc_node(addr); + u32 c = tipc_cluster(addr); + u32 z = tipc_zone(addr); + + if (n && (!z || !c)) + return 0; + if (c && !z) + return 0; + return 1; +} + +/** + * tipc_addr_node_valid - validates a proposed network address for this node + * + * Accepts , where Z, C, and N are non-zero. + * + * Returns 1 if address can be used, otherwise 0 + */ +int tipc_addr_node_valid(u32 addr) +{ + return tipc_addr_domain_valid(addr) && tipc_node(addr); +} + +int tipc_in_scope(u32 domain, u32 addr) +{ + if (!domain || (domain == addr)) + return 1; + if (domain == tipc_cluster_mask(addr)) /* domain */ + return 1; + if (domain == tipc_zone_mask(addr)) /* domain */ + return 1; + return 0; +} + +/** + * tipc_addr_scope - convert message lookup domain to a 2-bit scope value + */ +int tipc_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; +} + +char *tipc_addr_string_fill(char *string, u32 addr) +{ + snprintf(string, 16, "<%u.%u.%u>", + tipc_zone(addr), tipc_cluster(addr), tipc_node(addr)); + return string; +} -- cgit 1.2.3-korg