On Tue, 2015-09-22 at 16:34 +0200, Christophe Leroy wrote: > csum_partial is often called for small fixed length packets > for which it is suboptimal to use the generic csum_partial() > function. > > For instance, in my configuration, I got: > * One place calling it with constant len 4 > * Seven places calling it with constant len 8 > * Three places calling it with constant len 14 > * One place calling it with constant len 20 > * One place calling it with constant len 24 > * One place calling it with constant len 32 > > This patch renames csum_partial() to __csum_partial() and > implements csum_partial() as a wrapper inline function which > * uses csum_add() for small 16bits multiple constant length > * uses ip_fast_csum() for other 32bits multiple constant > * uses __csum_partial() in all other cases > > Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr> > --- > arch/powerpc/include/asm/checksum.h | 80 ++++++++++++++++++++++++++-------- > --- > arch/powerpc/lib/checksum_32.S | 4 +- > arch/powerpc/lib/checksum_64.S | 4 +- > arch/powerpc/lib/ppc_ksyms.c | 2 +- > 4 files changed, 62 insertions(+), 28 deletions(-)
Benchmarks? -Scott -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
