| /* |
| * Copyright (c) 2006, Swedish Institute of Computer Science. |
| * All rights reserved. |
| * |
| * 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 of the Institute 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 INSTITUTE 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 INSTITUTE 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. |
| * |
| * This file is part of the Contiki operating system. |
| * |
| * $Id: uip_udp_packet.c,v 1.7 2009/10/18 22:02:01 adamdunkels Exp $ |
| */ |
| |
| /** |
| * \file |
| * Module for sending UDP packets through uIP. |
| * \author |
| * Adam Dunkels <adam@sics.se> |
| */ |
| |
| #include <stdint.h> |
| |
| extern uint16_t uip_slen; |
| |
| #include "drivers/net/net.h" |
| #include "net/uip_arp.h" |
| #include "net/uip_udp_packet.h" |
| |
| #include <string.h> |
| |
| /*---------------------------------------------------------------------------*/ |
| void |
| uip_udp_packet_send(struct uip_udp_conn *c, const void *data, int len) |
| { |
| if(data != NULL) { |
| uip_udp_conn = c; |
| uip_slen = len; |
| memcpy(&uip_buf[CONFIG_UIP_LLH_LEN + UIP_IPUDPH_LEN], data, |
| len > CONFIG_UIP_BUFSIZE? CONFIG_UIP_BUFSIZE: len); |
| uip_process(UIP_UDP_SEND_CONN); |
| if(uip_len > 0) { |
| uip_arp_out(); |
| net_send(uip_buf, uip_len); |
| } |
| } |
| uip_slen = 0; |
| } |
| /*---------------------------------------------------------------------------*/ |
| void |
| uip_udp_packet_sendto(struct uip_udp_conn *c, const void *data, int len, |
| const uip_ipaddr_t *toaddr, uint16_t toport) |
| { |
| uip_ipaddr_t curaddr; |
| uint16_t curport; |
| |
| if(toaddr != NULL) { |
| /* Save current IP addr/port. */ |
| uip_ipaddr_copy(&curaddr, &c->ripaddr); |
| curport = c->rport; |
| |
| /* Load new IP addr/port */ |
| uip_ipaddr_copy(&c->ripaddr, toaddr); |
| c->rport = toport; |
| |
| uip_udp_packet_send(c, data, len); |
| |
| /* Restore old IP addr/port */ |
| uip_ipaddr_copy(&c->ripaddr, &curaddr); |
| c->rport = curport; |
| } |
| } |
| /*---------------------------------------------------------------------------*/ |