From: Saeed Mahameed <saeedm@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, kernel-team@fb.com,
Saeed Mahameed <saeedm@mellanox.com>
Subject: [PATCH net-next 07/12] net/mlx5e: Poll XDP TX CQ before RX CQ
Date: Sat, 25 Mar 2017 00:52:09 +0300 [thread overview]
Message-ID: <20170324215214.25711-8-saeedm@mellanox.com> (raw)
In-Reply-To: <20170324215214.25711-1-saeedm@mellanox.com>
Handle XDP TX completions before handling RX packets, to make sure more
free space is available for XDP TX packets a moment before handling
RX packets.
Performance improvement:
System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
Test case Before Now improvement
---------------------------------------------------------------
XDP Drop (1 core) 16.9Mpps 16.9Mpps No change
XDP TX (1 core) 12Mpps 13Mpps 8%
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
index 9beeb4a1212f..c880022bb21a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
@@ -118,12 +118,12 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget)
for (i = 0; i < c->num_tc; i++)
busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
- work_done = mlx5e_poll_rx_cq(&c->rq.cq, budget);
- busy |= work_done == budget;
-
if (c->xdp)
busy |= mlx5e_poll_xdpsq_cq(&c->rq.xdpsq.cq);
+ work_done = mlx5e_poll_rx_cq(&c->rq.cq, budget);
+ busy |= work_done == budget;
+
mlx5e_poll_ico_cq(&c->icosq.cq);
busy |= mlx5e_post_rx_wqes(&c->rq);
--
2.11.0
next prev parent reply other threads:[~2017-03-24 21:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-24 21:52 [PATCH net-next 00/12] Mellanox mlx5e XDP performance optimization Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 01/12] net/mlx5e: Use dma_rmb rather than rmb in CQE fetch routine Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 02/12] net/mlx5e: Xmit, no write combining Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 03/12] net/mlx5e: Single bfreg (UAR) for all mlx5e SQs and netdevs Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 04/12] net/mlx5e: Move XDP completion functions to rx file Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 05/12] net/mlx5e: Move mlx5e_rq struct declaration Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 06/12] net/mlx5e: Move XDP SQ instance into RQ Saeed Mahameed
2017-03-24 21:52 ` Saeed Mahameed [this message]
2017-03-24 21:52 ` [PATCH net-next 08/12] net/mlx5e: Optimize XDP frame xmit Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 09/12] net/mlx5e: Generalize tx helper functions for different SQ types Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 10/12] net/mlx5e: Proper names for SQ/RQ/CQ functions Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 11/12] net/mlx5e: Generalize SQ create/modify/destroy functions Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 12/12] net/mlx5e: Different SQ types Saeed Mahameed
2017-03-24 23:26 ` [PATCH net-next 00/12] Mellanox mlx5e XDP performance optimization Alexei Starovoitov
2017-03-25 12:30 ` Saeed Mahameed
2017-03-25 2:12 ` David Miller
2017-03-25 16:54 ` Tom Herbert
2017-03-26 9:16 ` Saeed Mahameed
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