103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* Module for sending UDP packets through uIP.
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "contiki-conf.h"
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extern uint16_t uip_slen;
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#include "net/ip/uip-udp-packet.h"
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#include "net/ipv6/multicast/uip-mcast6.h"
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#include <string.h>
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/*---------------------------------------------------------------------------*/
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void
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uip_udp_packet_send(struct uip_udp_conn *c, const void *data, int len)
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{
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#if UIP_UDP
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if(data != NULL && len <= (UIP_BUFSIZE - (UIP_LLH_LEN + UIP_IPUDPH_LEN))) {
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uip_udp_conn = c;
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uip_slen = len;
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memmove(&uip_buf[UIP_LLH_LEN + UIP_IPUDPH_LEN], data, len);
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uip_process(UIP_UDP_SEND_CONN);
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#if UIP_IPV6_MULTICAST
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/* Let the multicast engine process the datagram before we send it */
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if(uip_is_addr_mcast_routable(&uip_udp_conn->ripaddr)) {
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UIP_MCAST6.out();
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}
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#endif /* UIP_IPV6_MULTICAST */
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#if NETSTACK_CONF_WITH_IPV6
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tcpip_ipv6_output();
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#else
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if(uip_len > 0) {
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tcpip_output();
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}
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#endif
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}
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uip_slen = 0;
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#endif /* UIP_UDP */
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}
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/*---------------------------------------------------------------------------*/
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void
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uip_udp_packet_sendto(struct uip_udp_conn *c, const void *data, int len,
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const uip_ipaddr_t *toaddr, uint16_t toport)
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{
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uip_ipaddr_t curaddr;
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uint16_t curport;
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if(toaddr != NULL) {
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/* Save current IP addr/port. */
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uip_ipaddr_copy(&curaddr, &c->ripaddr);
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curport = c->rport;
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/* Load new IP addr/port */
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uip_ipaddr_copy(&c->ripaddr, toaddr);
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c->rport = toport;
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uip_udp_packet_send(c, data, len);
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/* Restore old IP addr/port */
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uip_ipaddr_copy(&c->ripaddr, &curaddr);
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c->rport = curport;
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}
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}
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/*---------------------------------------------------------------------------*/
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