Messages in this thread | | | Date | Mon, 7 Nov 2022 22:55:53 +0200 | From | Vladimir Oltean <> | Subject | Re: [PATCH 01/14] net: ethernet: mtk_eth_soc: account for vlan in rx header length |
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On Mon, Nov 07, 2022 at 07:54:39PM +0100, Felix Fietkau wrote: > This may be needed for correct MTU settings on devices using DSA > > Signed-off-by: Felix Fietkau <nbd@nbd.name> > --- > drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h > index 589f27ddc401..dcf2a0d5da33 100644 > --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h > +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h > @@ -29,7 +29,7 @@ > #define MTK_TX_DMA_BUF_LEN_V2 0xffff > #define MTK_DMA_SIZE 512 > #define MTK_MAC_COUNT 2 > -#define MTK_RX_ETH_HLEN (ETH_HLEN + ETH_FCS_LEN) > +#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + ETH_HLEN + ETH_FCS_LEN)
Commit title says account for VLAN (VLAN_HLEN, 4 bytes), code says add VLAN_ETH_HLEN (18) more bytes.
Also, why is DSA mentioned in the commit message? Is accounting for VLAN hlen not needed if DSA is not used? Why?
> #define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN) > #define MTK_DMA_DUMMY_DESC 0xffffffff > #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ > -- > 2.38.1 >
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