146 lines
5.1 KiB
C
146 lines
5.1 KiB
C
/****************************************************************************
|
|
* net/icmpv6/icmpv6_send.c
|
|
*
|
|
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 NuttX 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 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#if defined(CONFIG_NET) && defined(CONFIG_NET_ICMPv6) && defined(CONFIG_NET_ICMPv6_PING)
|
|
|
|
#include <string.h>
|
|
#include <debug.h>
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <nuttx/net/netconfig.h>
|
|
#include <nuttx/net/netdev.h>
|
|
#include <nuttx/net/netstats.h>
|
|
#include <nuttx/net/ip.h>
|
|
#include <nuttx/net/icmpv6.h>
|
|
|
|
#include "devif/devif.h"
|
|
#include "utils/utils.h"
|
|
#include "icmpv6/icmpv6.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
#define ICMPv6BUF ((struct icmpv6_iphdr_s *)&dev->d_buf[NET_LL_HDRLEN(dev)])
|
|
|
|
/****************************************************************************
|
|
* Public Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: icmpv6_send
|
|
*
|
|
* Description:
|
|
* Setup to send an ICMPv6 packet
|
|
*
|
|
* Parameters:
|
|
* dev - The device driver structure to use in the send operation
|
|
*
|
|
* Return:
|
|
* None
|
|
*
|
|
* Assumptions:
|
|
* Called from the interrupt level or with interrupts disabled.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void icmpv6_send(FAR struct net_driver_s *dev, FAR net_ipv6addr_t *destaddr)
|
|
{
|
|
FAR struct icmpv6_iphdr_s *icmp = ICMPv6BUF;
|
|
|
|
if (dev->d_sndlen > 0)
|
|
{
|
|
/* The total length to send is the size of the application data plus
|
|
* the IP and ICMPv6 headers (and, eventually, the Ethernet header)
|
|
*/
|
|
|
|
dev->d_len = dev->d_sndlen + IPICMPv6_HDRLEN;
|
|
|
|
/* The total size of the data (for ICMPv6 checksum calculation) includes
|
|
* the size of the ICMPv6 header
|
|
*/
|
|
|
|
dev->d_sndlen += ICMPv6_HDRLEN;
|
|
|
|
/* Initialize the IP header. Note that for IPv6, the IP length field
|
|
* does not include the IPv6 IP header length.
|
|
*/
|
|
|
|
icmp->vtc = 0x60;
|
|
icmp->tcf = 0x00;
|
|
icmp->flow = 0x00;
|
|
icmp->len[0] = (dev->d_sndlen >> 8);
|
|
icmp->len[1] = (dev->d_sndlen & 0xff);
|
|
icmp->proto = IP_PROTO_ICMP6;
|
|
icmp->ttl = IP_TTL;
|
|
|
|
net_ipv6addr_copy(icmp->srcipaddr, dev->d_ipv6addr);
|
|
net_ipv6addr_copy(icmp->destipaddr, destaddr);
|
|
|
|
/* Calculate the ICMPv6 checksum. */
|
|
|
|
icmp->chksum = 0;
|
|
icmp->chksum = ~icmpv6_chksum(dev);
|
|
|
|
nllvdbg("Outgoing ICMPv6 packet length: %d (%d)\n",
|
|
dev->d_len, (icmp->len[0] << 8) | icmp->len[1]);
|
|
|
|
#ifdef CONFIG_NET_STATISTICS
|
|
g_netstats.icmpv6.sent++;
|
|
g_netstats.ipv6.sent++;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_NET && CONFIG_NET_ICMPv6 && CONFIG_NET_ICMPv6_PING */
|