> Log Message:
> - Change callout_setfunc() to require that the callout handle is already
>   initialized.  Update the txp(4) to compensate.
> - Statically initialize the TCP timer callout handles in the tcpcb
>   template.  We still use callout_setfunc(), but that call is now much
>   less expensive.  Add a comment that the compiler is likely to unroll
>   the loop (so don't sweat that it's there).

How about to implement callout_setfunc() as a macro or inline?

enami.