From 372087dde5986d518f2a74d8c81f3910c4141462 Mon Sep 17 00:00:00 2001
From: Oliver Tappe <zooey@hirschkaefer.de>
Date: Sun, 12 Oct 2008 17:00:58 +0000
Subject: [PATCH] * fixed sending of IP-level broadcasts

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27997 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp b/src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp
index f50c8634e1..79af4ea1b8 100644
--- a/src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp
+++ b/src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp
@@ -12,6 +12,7 @@
 
 #include <net_datalink.h>
 #include <net_datalink_protocol.h>
+#include <net_device.h>
 #include <net_protocol.h>
 #include <net_stack.h>
 #include <NetBufferUtilities.h>
@@ -1249,6 +1250,7 @@ ipv4_send_routed_data(net_protocol *_protocol, struct net_route *route,
 
 	sockaddr_in &source = *(sockaddr_in *)buffer->source;
 	sockaddr_in &destination = *(sockaddr_in *)buffer->destination;
+	sockaddr_in &broadcastAddress = *(sockaddr_in *)interface->destination;
 
 	bool headerIncluded = false, checksumNeeded = true;
 	if (protocol != NULL)
@@ -1258,8 +1260,10 @@ ipv4_send_routed_data(net_protocol *_protocol, struct net_route *route,
 
 	if (destination.sin_addr.s_addr == INADDR_ANY)
 		return EDESTADDRREQ;
-	else if (destination.sin_addr.s_addr == INADDR_BROADCAST) {
-		// TODO check for local broadcast addresses as well?
+	else if ((interface->device->flags & IFF_BROADCAST) != 0
+		&& (destination.sin_addr.s_addr == INADDR_BROADCAST
+			|| destination.sin_addr.s_addr
+				== broadcastAddress.sin_addr.s_addr)) {
 		if (protocol && !(protocol->socket->options & SO_BROADCAST))
 			return B_BAD_VALUE;
 		buffer->flags |= MSG_BCAST;