PERFORCE change 114111 for review

[Paolo Pisati]

http://perforce.freebsd.org/chv.cgi?CH=114111

Change 114111 by piso at piso_newluxor on 2007/02/06 16:42:05

	Before checking for IP_MF, pullup at least the ip hdr.

Affected files ...

.. //depot/projects/soc2005/libalias/sys/netinet/libalias/alias.c#56 edit

Differences ...

==== //depot/projects/soc2005/libalias/sys/netinet/libalias/alias.c#56 (text+ko) ====

@@ -1346,11 +1346,15 @@
 			iresult = ProtoAliasIn(la, pip);
 			break;
 		}
-
+		
+		PULLUP_IPHDR(pip, ptr);
+		if (pip == NULL)
+			return (PKT_ALIAS_IGNORED);
 		if (ntohs(pip->ip_off) & IP_MF) {
 			struct alias_link *lnk;
-
-			lnk = FindFragmentIn1(la, pip->ip_src, alias_addr, pip->ip_id);
+			
+			lnk = FindFragmentIn1(la, pip->ip_src, alias_addr, 
+			    pip->ip_id);
 			if (lnk != NULL) {
 				iresult = PKT_ALIAS_FOUND_HEADER_FRAGMENT;
 				SetFragmentAddr(lnk, pip->ip_dst);