after many changes, the network stack can now be build

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1776 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/sys/protosw.h

@@ -145,8 +145,9 @@ struct protosw {
 	NET_LAYER3,
 	NET_LAYER4
   };
-  
-  void add_protosw     (struct protosw *prt[], int);
+
+//XXX conflicts with src/add-ons/kernel/network/core/core.c:69
+//  void add_protosw     (struct protosw *prt[], int); 
   void add_protocol    (struct protosw *, int);
   void remove_protocol (struct protosw *);
 #endif

headers/posix/sys/socketvar.h

@@ -5,10 +5,11 @@
 #define _SYS_SOCKETVAR_H
 
 #include <OS.h>
-#include <sys/mbuf.h>
 #include <sys/uio.h>
 #include <sys/socket.h>
 
+struct mbuf;
+
 struct  sockbuf {
 	uint32  sb_cc;			/* actual chars in buffer */
 	uint32  sb_hiwat;		/* max actual char count (high water mark) */