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_recv.c | |
| parent | IB/rxe: Do not export module's private function (diff) | |
| download | linux-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_recv.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_recv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_recv.c b/drivers/infiniband/sw/rxe/rxe_recv.c index 5af242fc0178..fb8c83e055e1 100644 --- a/drivers/infiniband/sw/rxe/rxe_recv.c +++ b/drivers/infiniband/sw/rxe/rxe_recv.c @@ -387,8 +387,8 @@ int rxe_rcv(struct sk_buff *skb) pack_icrc = be32_to_cpu(*icrcp); calc_icrc = rxe_icrc_hdr(pkt, skb); - calc_icrc = crc32_le(calc_icrc, (u8 *)payload_addr(pkt), - payload_size(pkt)); + calc_icrc = rxe_crc32(rxe, calc_icrc, (u8 *)payload_addr(pkt), + payload_size(pkt)); calc_icrc = (__force u32)cpu_to_be32(~calc_icrc); if (unlikely(calc_icrc != pack_icrc)) { if (skb->protocol == htons(ETH_P_IPV6)) |