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ARP fix for multicast transmissions. (Patch by Robert Quattlebaum.)

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This commit is contained in:
adamdunkels 2010-10-24 22:29:39 +00:00
parent a8848517dd
commit e680276954
1 changed files with 10 additions and 1 deletions
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11
core/net/uip_arp.c
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@ -54,7 +54,7 @@
* *
* This file is part of the uIP TCP/IP stack. * This file is part of the uIP TCP/IP stack.
* *
* $Id: uip_arp.c,v 1.6 2010/10/19 18:29:04 adamdunkels Exp $ * $Id: uip_arp.c,v 1.7 2010/10/24 22:29:39 adamdunkels Exp $
* *
*/ */
@ -374,6 +374,14 @@ uip_arp_out(void)
/* First check if destination is a local broadcast. */ /* First check if destination is a local broadcast. */
if(uip_ipaddr_cmp(&IPBUF->destipaddr, &uip_broadcast_addr)) { if(uip_ipaddr_cmp(&IPBUF->destipaddr, &uip_broadcast_addr)) {
memcpy(IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6); memcpy(IPBUF->ethhdr.dest.addr, broadcast_ethaddr.addr, 6);
} else if(IPBUF->destipaddr.u8[0] == 224) {
/* Multicast. */
IPBUF->ethhdr.dest.addr[0] = 0x01;
IPBUF->ethhdr.dest.addr[1] = 0x00;
IPBUF->ethhdr.dest.addr[2] = 0x5e;
IPBUF->ethhdr.dest.addr[3] = IPBUF->destipaddr.u8[1];
IPBUF->ethhdr.dest.addr[4] = IPBUF->destipaddr.u8[2];
IPBUF->ethhdr.dest.addr[5] = IPBUF->destipaddr.u8[3];
} else { } else {
/* Check if the destination address is on the local network. */ /* Check if the destination address is on the local network. */
if(!uip_ipaddr_maskcmp(&IPBUF->destipaddr, &uip_hostaddr, &uip_netmask)) { if(!uip_ipaddr_maskcmp(&IPBUF->destipaddr, &uip_hostaddr, &uip_netmask)) {
@ -430,3 +438,4 @@ uip_arp_out(void)
/** @} */ /** @} */
/** @} */ /** @} */