diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0212-bcmgenet-Better-coalescing-parameter-defaults.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0212-bcmgenet-Better-coalescing-parameter-defaults.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0212-bcmgenet-Better-coalescing-parameter-defaults.patch b/target/linux/bcm27xx/patches-5.4/950-0212-bcmgenet-Better-coalescing-parameter-defaults.patch new file mode 100644 index 0000000000..f2e829aec3 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0212-bcmgenet-Better-coalescing-parameter-defaults.patch @@ -0,0 +1,43 @@ +From b3344ca9ef887c4004c61be39f7d8d058a569d4d Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 27 Mar 2019 13:45:46 +0000 +Subject: [PATCH] bcmgenet: Better coalescing parameter defaults + +Set defaults for TX and RX packet coalescing to be equivalent to: + + # ethtool -C eth0 tx-frames 10 + # ethtool -C eth0 rx-usecs 50 + +This may be something we want to set via DT parameters in the +future. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + drivers/net/ethernet/broadcom/genet/bcmgenet.c | 7 +++++-- + 1 file changed, 5 insertions(+), 2 deletions(-) + +--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c ++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c +@@ -2145,7 +2145,7 @@ static void bcmgenet_init_tx_ring(struct + + bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX); + bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX); +- bcmgenet_tdma_ring_writel(priv, index, 1, DMA_MBUF_DONE_THRESH); ++ bcmgenet_tdma_ring_writel(priv, index, 10, DMA_MBUF_DONE_THRESH); + /* Disable rate control for now */ + bcmgenet_tdma_ring_writel(priv, index, flow_period_val, + TDMA_FLOW_PERIOD); +@@ -3567,9 +3567,12 @@ static int bcmgenet_probe(struct platfor + netif_set_real_num_rx_queues(priv->dev, priv->hw_params->rx_queues + 1); + + /* Set default coalescing parameters */ +- for (i = 0; i < priv->hw_params->rx_queues; i++) ++ for (i = 0; i < priv->hw_params->rx_queues; i++) { + priv->rx_rings[i].rx_max_coalesced_frames = 1; ++ priv->rx_rings[i].rx_coalesce_usecs = 50; ++ } + priv->rx_rings[DESC_INDEX].rx_max_coalesced_frames = 1; ++ priv->rx_rings[DESC_INDEX].rx_coalesce_usecs = 50; + + /* libphy will determine the link state */ + netif_carrier_off(dev); |