Re: [Enable Designware XGMAC VLAN Stripping Feature 2/2] net: stmmac: dwxgmac2: Add support for HW-accelerated VLAN Stripping
From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2023-07-21 10:11:43
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linux-arm-kernel, lkml
On 21/07/2023 08:26, Boon@ecsmtp.png.intel.com wrote:
From: Boon Khai Ng <redacted> Currently, VLAN tag stripping is done by software driver in stmmac_rx_vlan(). This patch is to Add support for VLAN tag stripping by the MAC hardware and MAC drivers to support it. This is done by adding rx_hw_vlan() and set_hw_vlan_mode() callbacks at stmmac_ops struct which are called from upper software layer.
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quoted hunk
if (priv->dma_cap.vlhash) { ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; ndev->features |= NETIF_F_HW_VLAN_STAG_FILTER;diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 23d53ea04b24..bd7f3326a44c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c@@ -543,6 +543,12 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac) plat->flags |= STMMAC_FLAG_TSO_EN; } + /* Rx VLAN HW Stripping */ + if (of_property_read_bool(np, "snps,rx-vlan-offload")) { + dev_info(&pdev->dev, "RX VLAN HW Stripping\n");
Why? Drop. Best regards, Krzysztof