net: socionext: Increase descriptors to 256

Increasing descriptors to 256 from 128 and adjusting the NAPI weight
to 64 increases performace on Rx by ~20% on 64byte packets

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index 334b618..7aa5ebb 100644 (file)
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -232,8 +232,7 @@
 #define NETSEC_EEPROM_PKT_ME_ADDRESS           0x20
 #define NETSEC_EEPROM_PKT_ME_SIZE              0x24
 
-#define DESC_NUM       128
-#define NAPI_BUDGET    (DESC_NUM / 2)
+#define DESC_NUM       256
 
 #define DESC_SZ        sizeof(struct netsec_de)
 
@@ -1659,7 +1658,7 @@ static int netsec_probe(struct platform_device *pdev)
        dev_info(&pdev->dev, "hardware revision %d.%d\n",
                 hw_ver >> 16, hw_ver & 0xffff);
 
-       netif_napi_add(ndev, &priv->napi, netsec_napi_poll, NAPI_BUDGET);
+       netif_napi_add(ndev, &priv->napi, netsec_napi_poll, NAPI_POLL_WEIGHT);
 
        ndev->netdev_ops = &netsec_netdev_ops;
        ndev->ethtool_ops = &netsec_ethtool_ops;