08e5378b11
Several licenses were missed in the initial work David Sidrane has submitted the ICLA and we can migrate the licenses to Apache. Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/****************************************************************************
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* net/utils/net_ipv6_maskcmp.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/net/ip.h>
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#ifdef CONFIG_NET_IPv6
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: net_ipv6addr_maskcmp
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*
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* Description:
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* Compare two IPv6 addresses under a netmask. The mask is used to mask
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* out the bits that are to be compared: Buts within the mask much
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* match exactly; bits outside if the mask are ignored.
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*
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* Input Parameters:
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* addr1 - The first IP address.
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* addr2 - The second IP address.
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* mask - The netmask.
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*
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* Returned Value:
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* True if the address under the mask are equal
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*
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****************************************************************************/
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bool net_ipv6addr_maskcmp(const net_ipv6addr_t addr1,
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const net_ipv6addr_t addr2,
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const net_ipv6addr_t mask)
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{
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int i;
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/* Start from the "bottom" where the addresses will most likely differ */
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for (i = 7; i >= 0; i--)
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{
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/* Same? */
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if ((addr1[i] & mask[i]) != (addr2[i] & mask[i]))
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{
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/* No.. the addresses are different */
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return false;
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}
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}
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/* The addresses are the same */
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return true;
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}
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#endif /* CONFIG_NET_IPv6 */
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