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.
147 lines
4.8 KiB
C
147 lines
4.8 KiB
C
/****************************************************************************
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* net/icmpv6/icmpv6_advertise.c
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* Send an ICMPv6 Neighbor Advertisement
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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 <debug.h>
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#include <nuttx/net/netconfig.h>
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#include <nuttx/net/netstats.h>
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#include <nuttx/net/netdev.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/icmpv6.h>
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#include "netdev/netdev.h"
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#include "utils/utils.h"
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#include "icmpv6/icmpv6.h"
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#ifdef CONFIG_NET_ICMPv6
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define IPv6BUF ((struct ipv6_hdr_s *)&dev->d_buf[NET_LL_HDRLEN(dev)])
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#define ICMPv6ADVERTISE \
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((struct icmpv6_neighbor_advertise_s *)&dev->d_buf[NET_LL_HDRLEN(dev) + IPv6_HDRLEN])
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: icmpv6_advertise
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*
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* Description:
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* Send an ICMPv6 Neighbor Advertisement
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*
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* Input Parameters:
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* dev - The device driver structure containing the outgoing ICMPv6 packet
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* buffer
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*
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* Returned Value:
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* None
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*
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* Assumptions:
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* The network is locked
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*
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****************************************************************************/
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void icmpv6_advertise(FAR struct net_driver_s *dev,
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const net_ipv6addr_t destipaddr)
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{
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FAR struct ipv6_hdr_s *ipv6 = IPv6BUF;
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FAR struct icmpv6_neighbor_advertise_s *adv;
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uint16_t lladdrsize;
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uint16_t l3size;
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/* Set up the IPv6 header */
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ipv6->vtc = 0x60; /* Version/traffic class (MS) */
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ipv6->tcf = 0; /* Traffic class (LS)/Flow label (MS) */
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ipv6->flow = 0; /* Flow label (LS) */
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/* Length excludes the IPv6 header */
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lladdrsize = netdev_lladdrsize(dev);
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l3size = SIZEOF_ICMPV6_NEIGHBOR_ADVERTISE_S(lladdrsize);
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ipv6->len[0] = (l3size >> 8);
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ipv6->len[1] = (l3size & 0xff);
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ipv6->proto = IP_PROTO_ICMP6; /* Next header */
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ipv6->ttl = 255; /* Hop limit */
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/* Swap source for destination IP address, add our source IP address */
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net_ipv6addr_copy(ipv6->destipaddr, destipaddr);
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net_ipv6addr_copy(ipv6->srcipaddr, dev->d_ipv6addr);
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/* Set up the ICMPv6 Neighbor Advertise response */
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adv = ICMPv6ADVERTISE;
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adv->type = ICMPv6_NEIGHBOR_ADVERTISE; /* Message type */
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adv->code = 0; /* Message qualifier */
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adv->flags[0] = ICMPv6_NADV_FLAG_S |
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ICMPv6_NADV_FLAG_O; /* Solicited+Override flags. */
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adv->flags[1] = 0;
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adv->flags[2] = 0;
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adv->flags[3] = 0;
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/* Copy the target address into the Neighbor Advertisement message */
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net_ipv6addr_copy(adv->tgtaddr, dev->d_ipv6addr);
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/* Set up the options */
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adv->opttype = ICMPv6_OPT_TGTLLADDR; /* Option type */
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adv->optlen = ICMPv6_OPT_OCTECTS(lladdrsize); /* Option length in octets */
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/* Copy our link layer address into the message */
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memcpy(adv->tgtlladdr, &dev->d_mac, lladdrsize);
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/* Calculate the checksum over both the ICMP header and payload */
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adv->chksum = 0;
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adv->chksum = ~icmpv6_chksum(dev, IPv6_HDRLEN);
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/* Set the size to the size of the IPv6 header and the payload size */
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dev->d_len = IPv6_HDRLEN + l3size;
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ninfo("Outgoing ICMPv6 Neighbor Advertise length: %d (%d)\n",
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dev->d_len, (ipv6->len[0] << 8) | ipv6->len[1]);
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#ifdef CONFIG_NET_STATISTICS
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g_netstats.icmpv6.sent++;
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g_netstats.ipv6.sent++;
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#endif
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}
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#endif /* CONFIG_NET_ICMPv6 */
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