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authoryonatanc <yonatanc@mellanox.com>2017-04-20 20:55:55 +0300
committerDoug Ledford <dledford@redhat.com>2017-04-21 10:45:02 -0400
commitcee2688e3cd60e0d1ab2f049e31cf11fa3f62540 (patch)
treeb92d3d4b7dee25cf7cec3f4f1a4cbe4389d1317c /drivers/infiniband/sw/rxe/rxe.c
parentIB/rxe: Do not export module's private function (diff)
downloadlinux-dev-cee2688e3cd60e0d1ab2f049e31cf11fa3f62540.tar.xz
linux-dev-cee2688e3cd60e0d1ab2f049e31cf11fa3f62540.zip
IB/rxe: Offload CRC calculation when possible
Use CPU ability to perform CRC calculations, by replacing direct calls to crc32_le() with crypto_shash_updata(). The overall performance gain measured with ib_send_bw tool is 10% and it was tested on "Intel CPU ES-2660 v2 @ 2.20Ghz" CPU. ib_send_bw -d rxe0 -x 1 -n 9000 -e -s $((1024 * 1024 )) -l 100 --------------------------------------------------------------------------------------------- | | bytes | iterations | BW peak[MB/sec] | BW average[MB/sec] | MsgRate[Mpps] | --------------------------------------------------------------------------------------------- | crc32_le | 1048576 | 9000 | inf | 497.60 | 0.000498 | | CRC offload | 1048576 | 9000 | inf | 546.70 | 0.000547 | --------------------------------------------------------------------------------------------- Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe.c')
-rw-r--r--drivers/infiniband/sw/rxe/rxe.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
index b12dd9b5a89d..cfadd8d8593a 100644
--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -64,6 +64,8 @@ static void rxe_cleanup(struct rxe_dev *rxe)
rxe_pool_cleanup(&rxe->mc_elem_pool);
rxe_cleanup_ports(rxe);
+
+ crypto_free_shash(rxe->tfm);
}
/* called when all references have been dropped */