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Diffstat (limited to 'net/tipc/addr.c')
| -rw-r--r-- | net/tipc/addr.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/net/tipc/addr.c b/net/tipc/addr.c new file mode 100644 index 000000000000..eca22260c98c --- /dev/null +++ b/net/tipc/addr.c @@ -0,0 +1,94 @@ +/* + * net/tipc/addr.c: TIPC address utility routines + * + * Copyright (c) 2000-2006, Ericsson AB + * Copyright (c) 2004-2005, 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 "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)); +} + |