From: Or Gerlitz <ogerlitz@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, Amir Vadai <amirv@mellanox.com>,
Tal Alon <talal@mellanox.com>,
Achiad Shochat <achiad@mellanox.com>,
Saeed Mahameed <saeedm@mellanox.com>,
Or Gerlitz <ogerlitz@mellanox.com>
Subject: [PATCH net-next 05/12] net/mlx5e: Poll rx cq before tx cq to improve round-trip latency
Date: Wed, 17 Jun 2015 18:26:22 +0300 [thread overview]
Message-ID: <1434554789-13758-6-git-send-email-ogerlitz@mellanox.com> (raw)
In-Reply-To: <1434554789-13758-1-git-send-email-ogerlitz@mellanox.com>
From: Achiad Shochat <achiad@mellanox.com>
For better round trip latency, handle rx completions before
tx completions.
Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@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 088bc42..9f31572 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
@@ -60,13 +60,13 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget)
clear_bit(MLX5E_CHANNEL_NAPI_SCHED, &c->flags);
- for (i = 0; i < c->num_tc; i++)
- busy |= mlx5e_poll_tx_cq(&c->sq[i].cq);
-
busy |= mlx5e_poll_rx_cq(&c->rq.cq, budget);
busy |= mlx5e_post_rx_wqes(c->rq.cq.sqrq);
+ for (i = 0; i < c->num_tc; i++)
+ busy |= mlx5e_poll_tx_cq(&c->sq[i].cq);
+
if (busy)
return budget;
--
2.3.7
next prev parent reply other threads:[~2015-06-17 15:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-17 15:26 [PATCH net-next 00/12] Mellanox NIC drivers update, Jun 17 2015 Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 01/12] net/mlx4_en: Fix off-by-four in ethtool Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 02/12] net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 03/12] net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 04/12] net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them Or Gerlitz
2015-06-17 15:26 ` Or Gerlitz [this message]
2015-06-21 17:21 ` [PATCH net-next 05/12] net/mlx5e: Poll rx cq before tx cq to improve round-trip latency David Miller
2015-06-21 21:35 ` achiad shochat
2015-06-22 13:35 ` David Miller
2015-06-23 14:12 ` Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 06/12] net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq() Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 07/12] net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 08/12] net/mlx5e: Avoid TX CQE generation if more xmit packets expected Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 09/12] net/mlx5e: Remove extra spaces Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 10/12] net/mlx5e: Remove mlx5e_cq.sqrq back-pointer Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 11/12] net/mlx5e: Pop cq outside mlx5e_get_cqe Or Gerlitz
2015-06-17 15:26 ` [PATCH net-next 12/12] net/mlx5e: Prefetch skb data on RX Or Gerlitz
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