zebra: Replace SELECTED_FIB flag with a rib_dest_t pointer

The SELECTED_FIB flag was placed upon the entry that we
have inserted into the kernel.  Remove this flag and replace
with a `rib_dest_t` *selected_fib.  Just keep track of the
selected_fib as we modify it.  This removes allot of
FOREACH_RE loops as that we do not need to find the
entry anymore.

At this point in time I think this is a very minor performance
boost.  Most `rib_dest_t` structures do not typically carry
more than 1 route_entry, but the minute you start having more
than one entry you can and will start having significant processing
time spent finding the selected_fib.

A future commit may re-order the route entries and possibly
keep more pointers on `rib_dest_t` to avoid lookup.  This
is a bit tricky because of the FIB_OVERRIDE code.

Signed-off-by Donald Sharp <sharpd@cumulusnetworks.com>

0 files changed, 0 insertions, 0 deletions