diff options
| author | Gan, Yi Fang <yi.fang.gan@intel.com> | 2023-11-21 13:38:42 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-11-22 10:54:14 +0000 |
| commit | 750011e239a50873251c16207b0fe78eabf8577e (patch) | |
| tree | 94e16234cef54d99ec1193e91b83deec59fe0977 /drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | |
| parent | 36b20fcdd9663ced36d3aef96f0eff8eb79de4b8 (diff) | |
net: stmmac: Add support for HW-accelerated VLAN stripping
Current implementation supports driver level VLAN tag stripping only.
The features is always on if CONFIG_VLAN_8021Q is enabled in kernel
config and is not user configurable.
This patch add support to MAC level VLAN tag stripping and can be
configured through ethtool. If the rx-vlan-offload is off, the VLAN tag
will be stripped by driver. If the rx-vlan-offload is on, the VLAN tag
will be stripped by MAC.
Command: ethtool -K <interface> rx-vlan-offload off | on
Signed-off-by: Lai Peter Jun Ann <jun.ann.lai@intel.com>
Signed-off-by: Gan, Yi Fang <yi.fang.gan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index c6ff1fa0e04d..5f35faf90963 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -1134,6 +1134,35 @@ static int dwmac4_config_l4_filter(struct mac_device_info *hw, u32 filter_no, return 0; } +static void dwmac4_rx_hw_vlan(struct mac_device_info *hw, + struct dma_desc *rx_desc, struct sk_buff *skb) +{ + if (hw->desc->get_rx_vlan_valid(rx_desc)) { + u16 vid = hw->desc->get_rx_vlan_tci(rx_desc); + + __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); + } +} + +static void dwmac4_set_hw_vlan_mode(struct mac_device_info *hw) +{ + void __iomem *ioaddr = hw->pcsr; + u32 value = readl(ioaddr + GMAC_VLAN_TAG); + + value &= ~GMAC_VLAN_TAG_CTRL_EVLS_MASK; + + if (hw->hw_vlan_en) + /* Always strip VLAN on Receive */ + value |= GMAC_VLAN_TAG_STRIP_ALL; + else + /* Do not strip VLAN on Receive */ + value |= GMAC_VLAN_TAG_STRIP_NONE; + + /* Enable outer VLAN Tag in Rx DMA descriptor */ + value |= GMAC_VLAN_TAG_CTRL_EVLRXS; + writel(value, ioaddr + GMAC_VLAN_TAG); +} + const struct stmmac_ops dwmac4_ops = { .core_init = dwmac4_core_init, .phylink_get_caps = dwmac4_phylink_get_caps, @@ -1175,6 +1204,8 @@ const struct stmmac_ops dwmac4_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; const struct stmmac_ops dwmac410_ops = { @@ -1224,6 +1255,8 @@ const struct stmmac_ops dwmac410_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; const struct stmmac_ops dwmac510_ops = { @@ -1277,6 +1310,8 @@ const struct stmmac_ops dwmac510_ops = { .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, + .rx_hw_vlan = dwmac4_rx_hw_vlan, + .set_hw_vlan_mode = dwmac4_set_hw_vlan_mode, }; static u32 dwmac4_get_num_vlan(void __iomem *ioaddr) |