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correct handling of UDP broadcast

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@418 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2007-11-30 23:12:11 +00:00
parent c3669a3104
commit fedadd3064
1 changed files with 27 additions and 12 deletions
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39
net/uip/uip-input.c
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@ -382,6 +382,31 @@ void uip_input(struct uip_driver_s *dev)
}
#endif /* CONFIG_NET_IPv6 */
/* If IP broadcast support is configured, we check for a broadcast
* UDP packet, which may be destined to us (even if there is no IP
* address yet assigned to the device as is the case when we are
* negotiating over DHCP for an address).
*/
#if defined(CONFIG_NET_BROADCAST) && defined(CONFIG_NET_UDP)
if (BUF->proto == UIP_PROTO_UDP &&
#ifndef CONFIG_NET_IPv6
uip_ipaddr_cmp(uip_ip4addr_conv(BUF->destipaddr), g_alloneaddr))
#else
uip_ipaddr_cmp(BUF->destipaddr, g_alloneaddr))
#endif
{
uip_udpinput(dev);
return;
}
/* In most other cases, the device must be assigned a non-zero IP
* address. Another exception is when CONFIG_NET_PINGADDRCONF is
* enabled...
*/
else
#endif
if (uip_ipaddr_cmp(dev->d_ipaddr, g_allzeroaddr))
{
/* If we are configured to use ping IP address configuration and
@ -403,20 +428,10 @@ void uip_input(struct uip_driver_s *dev)
goto drop;
}
}
/* Check if the pack is destined for out IP address */
else
{
/* If IP broadcast support is configured, we check for a broadcast
* UDP packet, which may be destined to us.
*/
#ifdef CONFIG_NET_BROADCAST
if (BUF->proto == UIP_PROTO_UDP && uip_ipaddr_cmp(BUF->destipaddr, g_alloneaddr))
{
uip_udpinput(dev);
return;
}
#endif
/* Check if the packet is destined for our IP address. */
#ifndef CONFIG_NET_IPv6
if (!uip_ipaddr_cmp(uip_ip4addr_conv(BUF->destipaddr), dev->d_ipaddr))