Patch from Lars Kellogg-Stedman:

I'm building BusyBox using a development kit for MontaVista Hardhat Linux
(PPC) -- which, at least in this instance, is based around kernel 2.2.14.
I've had to massage a few files in networking/libiproute/ to make it
compile.  Specifically:

  (1) Added a #include <sys/uio.h> for the iovec structure in
      libnetlink.c,

  (2) Put ifdefs in ll_types.c and ll_proto.c around various
      constants (ETH_P_xxx and ARPHRD_xxx) that weren't defined,

  (3) Make do_changename() in iplink.c require a kernel >=
      2.4.0 -- the ifr structure in my environment doesn't
      have the ifr_name attribute.  I've assumed this is
      a kernel dependency -- let me know if I ought to be
      checking something else.

      In the absence of the correct kernel, do_changename()
      always returns 0.

Attached is a patch against the current CVS that will make these changes.

-- Lars

networking/libiproute/iplink.c

@@ -12,6 +12,7 @@
 
 #include <sys/ioctl.h>
 #include <sys/socket.h>
+#include <linux/version.h>
 
 #include <errno.h>
 #include <stdlib.h>
@@ -95,6 +96,7 @@ static int do_chflags(char *dev, __u32 flags, __u32 mask)
 
 static int do_changename(char *dev, char *newdev)
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0)
 	struct ifreq ifr;
 	int fd;
 	int err;
@@ -112,6 +114,8 @@ static int do_changename(char *dev, char *newdev)
 	}
 	close(fd);
 	return err;
+#endif
+	return 0;
 }
 
 static int set_qlen(char *dev, int qlen)