gro: optimize skb_gro_postpull_rcsum()
We can leverage third argument to csum_partial(): X = csum_sub(X, csum_partial(start, len, 0)); --> X = csum_add(X, ~csum_partial(start, len, 0)); --> X = ~csum_partial(start, len, ~X); This removes one add/adc pair and its dependency against the carry flag. Signed-off-by:Eric Dumazet <edumazet@google.com> Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
parent
70331909
Please register or sign in to comment