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ramips: implement vlan rx offload on MT7621 

Avoids the overhead of software VLAN untagging in the network stack

Signed-off-by: Felix Fietkau <nbd@nbd.name>
openwrt-19.07
Felix Fietkau 2019-03-23 14:29:00 +01:00
parent 701b8d0050
commit c9262a96d1
3 changed files with 11 additions and 4 deletions
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9
target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c
View File

@ -933,6 +933,11 @@ static int fe_poll_rx(struct napi_struct *napi, int budget,
skb_checksum_none_assert(skb);
skb->protocol = eth_type_trans(skb, netdev);
if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX &&
RX_DMA_VID(trxd.rxd3))
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
RX_DMA_VID(trxd.rxd3));
#ifdef CONFIG_NET_MEDIATEK_OFFLOAD
if (mtk_offload_check_rx(priv, skb, trxd.rxd4) == 0) {
#endif
@ -1585,7 +1590,9 @@ static int fe_probe(struct platform_device *pdev)
if (soc->init_data)
soc->init_data(soc, netdev);
netdev->vlan_features = netdev->hw_features & ~NETIF_F_HW_VLAN_CTAG_TX;
netdev->vlan_features = netdev->hw_features &
~(NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX);
netdev->features |= netdev->hw_features;
if (IS_ENABLED(CONFIG_SOC_MT7621))

1
target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.h
View File

@ -406,7 +406,6 @@ struct fe_soc_data {
#define FE_FLAG_JUMBO_FRAME BIT(2)
#define FE_FLAG_RX_2B_OFFSET BIT(3)
#define FE_FLAG_RX_SG_DMA BIT(4)
#define FE_FLAG_RX_VLAN_CTAG BIT(5)
#define FE_FLAG_NAPI_WEIGHT BIT(6)
#define FE_FLAG_CALIBRATE_CLK BIT(7)
#define FE_FLAG_HAS_SWITCH BIT(8)

5
target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/soc_mt7621.c
View File

@ -122,7 +122,7 @@ static int mt7621_fwd_config(struct fe_priv *priv)
/* mt7621 doesn't have txcsum config */
mt7621_rxcsum_config((dev->features & NETIF_F_RXCSUM));
mt7621_rxvlan_config(priv->flags & FE_FLAG_RX_VLAN_CTAG);
mt7621_rxvlan_config(dev->features & NETIF_F_HW_VLAN_CTAG_RX);
return 0;
}
@ -142,7 +142,8 @@ static void mt7621_init_data(struct fe_soc_data *data,
FE_FLAG_HAS_SWITCH | FE_FLAG_JUMBO_FRAME;
netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG | NETIF_F_TSO |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_SG | NETIF_F_TSO |
NETIF_F_TSO6 | NETIF_F_IPV6_CSUM |
NETIF_F_TSO_MANGLEID;
}