Functions like free, rte_free, and rte_mempool_free
already handle NULL pointer so the checks here are not necessary.
Remove redundant NULL pointer checks before free functions
found by nullfree.cocci
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Add a simple unit test for checksum API.
Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>