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Release 4.11 net/tipc/addr.c

Directory: net/tipc
/*
 * 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 <linux/kernel.h>
#include "addr.h"
#include "core.h"

/**
 * 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; }

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Ying Xue24100.00%1100.00%
Total24100.00%1100.00%


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); }

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Ying Xue39100.00%1100.00%
Total39100.00%1100.00%

/** * 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; }

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PersonTokensPropCommitsCommitProp
Ying Xue37100.00%1100.00%
Total37100.00%1100.00%

/** * 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); }

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PersonTokensPropCommitsCommitProp
Ying Xue61100.00%1100.00%
Total61100.00%1100.00%

/** * tipc_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. * * 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; }

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Per Liden60100.00%2100.00%
Total60100.00%2100.00%

/** * tipc_addr_node_valid - validates a proposed network address for this node * * Accepts <Z.C.N>, 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); }

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Per Liden19100.00%2100.00%
Total19100.00%2100.00%


int tipc_in_scope(u32 domain, u32 addr) { if (!domain || (domain == addr)) return 1; if (domain == tipc_cluster_mask(addr)) /* domain <Z.C.0> */ return 1; if (domain == tipc_zone_mask(addr)) /* domain <Z.0.0> */ return 1; return 0; }

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PersonTokensPropCommitsCommitProp
Allan Stephens54100.00%2100.00%
Total54100.00%2100.00%

/** * 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; }

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PersonTokensPropCommitsCommitProp
Allan Stephens42100.00%1100.00%
Total42100.00%1100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Allan Stephens40100.00%1100.00%
Total40100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ying Xue16842.86%225.00%
Allan Stephens14135.97%450.00%
Per Liden8321.17%225.00%
Total392100.00%8100.00%
Directory: net/tipc
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