On Tue, Nov 22, 2005 at 09:30:38PM +1100, herbert wrote:

the need to return control to dst_output.  The only reason for
dst_output to exist is to handle compilers that can't optimise away
tail calls.  So if we are going to rely on the compiler to do away
with tail calls (ip_dst_output <-> __ip_dst_output), then we might
as well get rid of the loop in dst_output.

Unfortunately it looks like gcc 3.3.5 at least is too dumb to optimise
it away.  I think we'll need a better strategy.
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