diff options
| author | yonatanc <yonatanc@mellanox.com> | 2017-04-20 20:55:55 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-04-21 10:45:02 -0400 |
| commit | cee2688e3cd60e0d1ab2f049e31cf11fa3f62540 (patch) | |
| tree | b92d3d4b7dee25cf7cec3f4f1a4cbe4389d1317c /drivers/infiniband/sw/rxe/rxe_mr.c | |
| parent | 0d38ac8a8be1c8f65a63187b60ea92dbd938c332 (diff) | |
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_mr.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_mr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c index 37eea7441ca4..154c3ee211ae 100644 --- a/drivers/infiniband/sw/rxe/rxe_mr.c +++ b/drivers/infiniband/sw/rxe/rxe_mr.c @@ -370,7 +370,8 @@ int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr, int length, ((void *)(uintptr_t)iova) : addr; if (crcp) - *crcp = crc32_le(*crcp, src, length); + crc = rxe_crc32(to_rdev(mem->pd->ibpd.device), + *crcp, src, length); memcpy(dest, src, length); @@ -403,7 +404,8 @@ int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr, int length, bytes = length; if (crcp) - crc = crc32_le(crc, src, bytes); + crc = rxe_crc32(to_rdev(mem->pd->ibpd.device), + crc, src, bytes); memcpy(dest, src, bytes); |