patch-2.2.18 linux/include/net/ip.h

• Lines: 13
• Date: Thu Dec 7 15:11:17 2000
• Orig file: v2.2.17/include/net/ip.h
• Orig date: Fri Apr 21 23:11:52 2000

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/include/net/ip.h linux/include/net/ip.h
@@ -171,10 +171,8 @@
 int ip_decrease_ttl(struct iphdr *iph)
 {
 	u16 check = iph->check;
-	check = ntohs(check) + 0x0100;
-	if ((check & 0xFF00) == 0)
-		check++;		/* carry overflow */
-	iph->check = htons(check);
+	check += __constant_htons(0x0100);
+	iph->check = check + (check>=0xFFFF);
 	return --iph->ttl;
 }