After discussion with Eric Norum <eric@skatter.usask.ca>,

I added __INSIDE_RTEMS_BSD_TCPIP_STACK__ that trips all the needed
macro definitions for a network driver.

c/src/libchip/network/Makefile.in

@@ -35,8 +35,7 @@ include $(RTEMS_ROOT)/make/lib.cfg
 # Add local stuff here using +=
 #
 
-DEFINES  += -D_COMPILING_BSD_KERNEL_ -DKERNEL -DINET -DNFS \
-     -DDIAGNOSTIC -DBOOTP_COMPAT
+DEFINES  += -D__INSIDE_RTEMS_BSD_TCPIP_STACK__
 CPPFLAGS +=
 CFLAGS   += $(LIBC_DEFINES)
 

c/src/libnetworking/rtems/rtems_bsdnet.h

@@ -7,6 +7,28 @@
 
 #include <rtems.h>
 
+/*
+ *  If this file is included from inside the Network Stack proper or
+ *  a device driver, then __INSIDE_RTEMS_BSD_TCPIP_STACK__ should be
+ *  defined.  This triggers a number of internally used definitions.
+ */
+
+#if defined(__INSIDE_RTEMS_BSD_TCPIP_STACK__)
+#undef _COMPILING_BSD_KERNEL_
+#undef KERNEL
+#undef INET
+#undef NFS
+#undef DIAGNOSTIC
+#undef BOOTP_COMPAT
+
+#define _COMPILING_BSD_KERNEL_
+#define KERNEL
+#define INET
+#define NFS
+#define DIAGNOSTIC
+#define BOOTP_COMPAT
+#endif
+
 /*
  * Values that may be obtained by BOOTP
  */

c/src/libnetworking/rtems_servers/Makefile.in

@@ -33,8 +33,7 @@ include $(RTEMS_ROOT)/make/lib.cfg
 # Add local stuff here using +=
 #
 
-DEFINES  += -D_COMPILING_BSD_KERNEL_ -DKERNEL -DINET -DNFS \
-    -DDIAGNOSTIC -DBOOTP_COMPAT
+DEFINES  += -D__INSIDE_RTEMS_BSD_TCPIP_STACK__
 CPPFLAGS +=
 CFLAGS   +=