04c9079954
Because of this, it will take some time to detangle the licensing under net/. Many new features, original features were added to the NuttX network. Clearly, any references to Adam Dunkels in the files that implement these new features that have no counterpart in uIP 1.0 are errors. This PR removes the references and converts the license headers to Apache 2.0 where possible. The affected files include only (1) the implementation of IPv6 (including neighbor support under ICMPv6) and (2) Raw sockets. Neither of these features are present in uIP 1.0 and the licenses can be freely updated.
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/****************************************************************************
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* net/neighbor/neighbor_add.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 <stdint.h>
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#include <string.h>
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#include <assert.h>
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#include <debug.h>
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#include <net/if.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/ip.h>
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#include <nuttx/net/neighbor.h>
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#include "netdev/netdev.h"
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#include "neighbor/neighbor.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: neighbor_add
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*
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* Description:
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* Add the new address association to the Neighbor Table (if it is not
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* already there).
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*
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* Input Parameters:
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* dev - Driver instance associated with the MAC
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* ipaddr - The IPv6 address of the mapping.
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* addr - The link layer address of the mapping
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void neighbor_add(FAR struct net_driver_s *dev, FAR net_ipv6addr_t ipaddr,
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FAR uint8_t *addr)
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{
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uint8_t lltype;
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clock_t oldest_time;
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int oldest_ndx;
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int i;
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DEBUGASSERT(dev != NULL && addr != NULL);
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/* Find the matching entry, first unused entry, or the oldest used entry.
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* The unused entry will have ne_time == 0 and should generate the oldest
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* time. REVISIT: Could this fail on clock wraparound? A more explicit
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* check might be to compare ne_ipaddr with the IPv6 unspecified address.
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*/
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oldest_time = g_neighbors[0].ne_time;
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oldest_ndx = 0;
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lltype = dev->d_lltype;
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for (i = 0; i < CONFIG_NET_IPv6_NCONF_ENTRIES; ++i)
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{
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if (g_neighbors[i].ne_addr.na_lltype == lltype &&
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net_ipv6addr_cmp(g_neighbors[i].ne_ipaddr, ipaddr))
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{
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oldest_ndx = i;
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break;
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}
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if ((int)(g_neighbors[i].ne_time - oldest_time) < 0)
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{
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oldest_ndx = i;
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oldest_time = g_neighbors[i].ne_time;
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}
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}
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/* Use the oldest or first free entry (either pointed to by the
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* "oldest_ndx" variable).
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*/
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g_neighbors[oldest_ndx].ne_time = clock_systime_ticks();
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net_ipv6addr_copy(g_neighbors[oldest_ndx].ne_ipaddr, ipaddr);
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g_neighbors[oldest_ndx].ne_addr.na_lltype = lltype;
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g_neighbors[oldest_ndx].ne_addr.na_llsize = netdev_lladdrsize(dev);
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memcpy(&g_neighbors[oldest_ndx].ne_addr.u, addr,
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g_neighbors[oldest_ndx].ne_addr.na_llsize);
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/* Dump the contents of the new entry */
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neighbor_dumpentry("Added entry", &g_neighbors[oldest_ndx]);
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}
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