tree 04c95985a93c3c978d71a8a015df2b8d7b67bbe7
parent 1ee7ced6468349f12a7094ac93f8e66c43064248
author Eric Dumazet <edumazet@google.com> 1587132623 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1588170681 +0200

tcp: cache line align MAX_TCP_HEADER

[ Upstream commit 9bacd256f1354883d3c1402655153367982bba49 ]

TCP stack is dumb in how it cooks its output packets.

Depending on MAX_HEADER value, we might chose a bad ending point
for the headers.

If we align the end of TCP headers to cache line boundary, we
make sure to always use the smallest number of cache lines,
which always help.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>