Debugging added, whitespace removed
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adamdunkels
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1ab044e319
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1 changed files with 39 additions and 25 deletions
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@ -6,7 +6,7 @@
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/**
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* \defgroup uiparp uIP Address Resolution Protocol
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* @{
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*
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*
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* The Address Resolution Protocol ARP is used for mapping between IP
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* addresses and link level addresses such as the Ethernet MAC
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* addresses. ARP uses broadcast queries to ask for the link level
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@ -26,19 +26,19 @@
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/*
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* Copyright (c) 2001-2003, Adam Dunkels.
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* All rights reserved.
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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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* 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. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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@ -50,11 +50,11 @@
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: uip_arp.c,v 1.2 2006/08/09 16:13:40 bg- Exp $
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* $Id: uip_arp.c,v 1.3 2007/03/21 23:19:52 adamdunkels Exp $
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*
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*/
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@ -73,19 +73,19 @@ struct arp_hdr {
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struct uip_eth_addr shwaddr;
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uip_ipaddr_t sipaddr;
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struct uip_eth_addr dhwaddr;
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uip_ipaddr_t dipaddr;
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uip_ipaddr_t dipaddr;
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};
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struct ethip_hdr {
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struct uip_eth_hdr ethhdr;
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/* IP header. */
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u8_t vhl,
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tos,
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len[2],
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ipid[2],
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ipoffset[2],
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ttl,
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proto;
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tos,
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len[2],
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ipid[2],
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ipoffset[2],
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ttl,
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proto;
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u16_t ipchksum;
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uip_ipaddr_t srcipaddr, destipaddr;
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};
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@ -114,6 +114,15 @@ static u8_t tmpage;
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#define BUF ((struct arp_hdr *)&uip_buf[0])
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#define IPBUF ((struct ethip_hdr *)&uip_buf[0])
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*-----------------------------------------------------------------------------------*/
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/**
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* Initialize the ARP module.
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@ -283,9 +292,14 @@ uip_arp_arpin(void)
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switch(BUF->opcode) {
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case HTONS(ARP_REQUEST):
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/* ARP request. If it asked for our address, we send out a
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reply. */
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reply. */
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/* if(BUF->dipaddr[0] == uip_hostaddr[0] &&
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BUF->dipaddr[1] == uip_hostaddr[1]) {*/
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PRINTF("uip_arp_arpin: request for %d.%d.%d.%d (we are %d.%d.%d.%d)\n",
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BUF->dipaddr.u8[0], BUF->dipaddr.u8[1],
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BUF->dipaddr.u8[2], BUF->dipaddr.u8[3],
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uip_hostaddr.u8[0], uip_hostaddr.u8[1],
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uip_hostaddr.u8[2], uip_hostaddr.u8[3]);
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if(uip_ipaddr_cmp(&BUF->dipaddr, &uip_hostaddr)) {
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/* First, we register the one who made the request in our ARP
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table, since it is likely that we will do more communication
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@ -303,9 +317,9 @@ uip_arp_arpin(void)
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BUF->dipaddr = BUF->sipaddr;
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BUF->sipaddr = uip_hostaddr;
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BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
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BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
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uip_len = sizeof(struct arp_hdr);
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}
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}
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break;
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case HTONS(ARP_REPLY):
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/* ARP reply. We insert or update the ARP table if it was meant
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@ -369,10 +383,10 @@ uip_arp_out(void)
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/* Destination address was not on the local network, so we need to
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use the default router's IP address instead of the destination
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address when determining the MAC address. */
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uip_ipaddr_copy(&ipaddr, &uip_draddr);
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uip_ipaddr_copy(&ipaddr, &uip_draddr);
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} else {
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/* Else, we use the destination IP address. */
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uip_ipaddr_copy(&ipaddr, &IPBUF->destipaddr);
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uip_ipaddr_copy(&ipaddr, &IPBUF->destipaddr);
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}
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for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
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