101 lines
4.0 KiB
C
101 lines
4.0 KiB
C
/****************************************************************************
|
|
* net/neighbor/neighbor_findentry.c
|
|
*
|
|
* Copyright (C) 2007-2009, 2015 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* A leverage of logic from uIP which also has a BSD style license
|
|
*
|
|
* Copyright (c) 2006, Swedish Institute of Computer Science. All rights
|
|
* reserved.
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
* 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 name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <string.h>
|
|
#include <debug.h>
|
|
|
|
#include "neighbor/neighbor.h"
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: neighbor_findentry
|
|
*
|
|
* Description:
|
|
* Find an entry in the Neighbor Table. This interface is internal to
|
|
* the neighbor implementation; Consider using neighbor_lookup() instead;
|
|
*
|
|
* Input Parameters:
|
|
* ipaddr - The IPv6 address to use in the lookup;
|
|
*
|
|
* Returned Value:
|
|
* The Neighbor Table entry corresponding to the IPv6 address; NULL is
|
|
* returned if there is no matching entry in the Neighbor Table.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR struct neighbor_entry *neighbor_findentry(const net_ipv6addr_t ipaddr)
|
|
{
|
|
int i;
|
|
|
|
ninfo("Find neighbor: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
|
ntohs(ipaddr[0]), ntohs(ipaddr[1]), ntohs(ipaddr[2]),
|
|
ntohs(ipaddr[3]), ntohs(ipaddr[4]), ntohs(ipaddr[5]),
|
|
ntohs(ipaddr[6]), ntohs(ipaddr[7]));
|
|
|
|
for (i = 0; i < CONFIG_NET_IPv6_NCONF_ENTRIES; ++i)
|
|
{
|
|
FAR struct neighbor_entry *neighbor = &g_neighbors[i];
|
|
|
|
if (net_ipv6addr_cmp(neighbor->ne_ipaddr, ipaddr))
|
|
{
|
|
ninfo(" at: %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[0],
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[1],
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[2],
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[3],
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[4],
|
|
neighbor->ne_addr.na_addr.ether_addr_octet[5]);
|
|
|
|
return &g_neighbors[i];
|
|
}
|
|
}
|
|
|
|
ninfo(" Not found\n");
|
|
return NULL;
|
|
}
|