netdev - [PATCH net-next 06/10] net: enetc: increase TX ring size

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Message-Id: <20210416212225.3576792-7-olteanv@gmail.com>
Date:   Sat, 17 Apr 2021 00:22:21 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        Po Liu <po.liu@....com>
Cc:     Claudiu Manoil <claudiu.manoil@....com>,
        Alex Marginean <alexandru.marginean@....com>,
        Yangbo Lu <yangbo.lu@....com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next 06/10] net: enetc: increase TX ring size

From: Vladimir Oltean <vladimir.oltean@....com>

Now that commit d6a2829e82cf ("net: enetc: increase RX ring default
size") has increased the RX ring size, it is quite easy to congest the
TX rings when the traffic is predominantly XDP_TX, as the RX ring is
quite a bit larger than the TX one.

Since we bit the bullet and did the expensive thing already (larger RX
rings consume more memory pages), it seems quite foolish to keep the TX
rings small. So make them equally sized with TX.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/freescale/enetc/enetc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index d52717bc73c7..6f818e33e03b 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -79,7 +79,7 @@ struct enetc_xdp_data {
 };
 
 #define ENETC_RX_RING_DEFAULT_SIZE	2048
-#define ENETC_TX_RING_DEFAULT_SIZE	256
+#define ENETC_TX_RING_DEFAULT_SIZE	2048
 #define ENETC_DEFAULT_TX_WORK		(ENETC_TX_RING_DEFAULT_SIZE / 2)
 
 struct enetc_bdr {
-- 
2.25.1