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net: stmmac: Setup a default RX Coalesce value instead of the minimum 

For performance reasons, sometimes using the minimum RX Coalesce value
is not optimal. Lets setup a default value that is optimal in most of
the use cases.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jose Abreu 2019-11-14 12:42:46 +01:00 committed by David S. Miller
parent 09146abebc
commit 4e4337ccf7
2 changed files with 5 additions and 3 deletions
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1
drivers/net/ethernet/stmicro/stmmac/common.h
View File

@ -248,6 +248,7 @@ struct stmmac_safety_stats {
/* Max/Min RI Watchdog Timer count value */
#define MAX_DMA_RIWT 0xff
#define MIN_DMA_RIWT 0x10
#define DEF_DMA_RIWT 0xa0
/* Tx coalesce parameters */
#define STMMAC_COAL_TX_TIMER 1000
#define STMMAC_MAX_COAL_TX_TICK 100000

7
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -2605,9 +2605,10 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS;
if (priv->use_riwt) {
ret = stmmac_rx_watchdog(priv, priv->ioaddr, MIN_DMA_RIWT, rx_cnt);
if (!ret)
priv->rx_riwt = MIN_DMA_RIWT;
if (!priv->rx_riwt)
priv->rx_riwt = DEF_DMA_RIWT;
ret = stmmac_rx_watchdog(priv, priv->ioaddr, priv->rx_riwt, rx_cnt);
}
if (priv->hw->pcs)