From e7d4d115566c113f2cba32f16857ea5e90c03be0 Mon Sep 17 00:00:00 2001 From: patacongo Date: Tue, 2 Sep 2008 20:38:12 +0000 Subject: sendto.c git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@868 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/net/uip/uip-icmpsend.c | 161 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 nuttx/net/uip/uip-icmpsend.c (limited to 'nuttx/net/uip/uip-icmpsend.c') diff --git a/nuttx/net/uip/uip-icmpsend.c b/nuttx/net/uip/uip-icmpsend.c new file mode 100644 index 000000000..90c2a6c6e --- /dev/null +++ b/nuttx/net/uip/uip-icmpsend.c @@ -0,0 +1,161 @@ +/**************************************************************************** + * net/uip/uip-icmsend.c + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 +#if defined(CONFIG_NET) && defined(CONFIG_NET_ICMP) && defined(CONFIG_NET_ICMP_PING) + +#include +#include + +#include +#include +#include + +#include "uip-internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#define ICMPBUF ((struct uip_icmpip_hdr *)&dev->d_buf[UIP_LLH_LEN]) + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: uip_icmpsend + * + * Description: + * Setup to send an ICMP 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 uip_icmpsend(struct uip_driver_s *dev, uip_ipaddr_t *destaddr) +{ + if (dev->d_sndlen > 0) + { + /* The total lenth to send is the size of the application data plus + * the IP and ICMP headers (and, eventually, the ethernet header) + */ + + dev->d_len = dev->d_sndlen + UIP_IPICMPH_LEN; + + /* Initialize the IP header. Note that for IPv6, the IP length field + * does not include the IPv6 IP header length. + */ + +#ifdef CONFIG_NET_IPv6 + + ICMPBUF->vtc = 0x60; + ICMPBUF->tcf = 0x00; + ICMPBUF->flow = 0x00; + ICMPBUF->len[0] = (dev->d_sndlen >> 8); + ICMPBUF->len[1] = (dev->d_sndlen & 0xff); + ICMPBUF->nexthdr = UIP_PROTO_ICMP; + ICMPBUF->hoplimit = UIP_TTL; + + uip_ipaddr_copy(ICMPBUF->srcipaddr, &dev->d_ipaddr); + uip_ipaddr_copy(ICMPBUF->destipaddr, destaddr); + +#else /* CONFIG_NET_IPv6 */ + + ICMPBUF->vhl = 0x45; + ICMPBUF->tos = 0; + ICMPBUF->len[0] = (dev->d_len >> 8); + ICMPBUF->len[1] = (dev->d_len & 0xff); + ++g_ipid; + ICMPBUF->ipid[0] = g_ipid >> 8; + ICMPBUF->ipid[1] = g_ipid & 0xff; + ICMPBUF->ipoffset[0] = 0; + ICMPBUF->ipoffset[1] = 0; + ICMPBUF->ttl = UIP_TTL; + ICMPBUF->proto = UIP_PROTO_ICMP; + + /* Calculate IP checksum. */ + + ICMPBUF->ipchksum = 0; + ICMPBUF->ipchksum = ~(uip_ipchksum(dev)); + + uiphdr_ipaddr_copy(ICMPBUF->srcipaddr, &dev->d_ipaddr); + uiphdr_ipaddr_copy(ICMPBUF->destipaddr, destaddr); + +#endif /* CONFIG_NET_IPv6 */ + + /* Calculate the ICMP checksum. */ + + ICMPBUF->icmpchksum = 0; + ICMPBUF->icmpchksum = ~(uip_icmpchksum(dev)); + if (ICMPBUF->icmpchksum == 0) + { + ICMPBUF->icmpchksum = 0xffff; + } + + nvdbg("Outgoing ICMP packet length: %d (%d)\n", + dev->d_len, (ICMPBUF->len[0] << 8) | ICMPBUF->len[1]); + +#ifdef CONFIG_NET_STATISTICS + uip_stat.icmp.sent++; + uip_stat.ip.sent++; +#endif + } +} + +#endif /* CONFIG_NET && CONFIG_NET_ICMP && CONFIG_NET_ICMP_PING */ -- cgit v1.2.3