@ -1373,20 +1373,12 @@ static int fe_change_mtu(struct net_device *dev, int new_mtu)
int frag_size , old_mtu ;
u32 fwd_cfg ;
if ( ! ( priv - > flags & FE_FLAG_JUMBO_FRAME ) )
return eth_change_mtu ( dev , new_mtu ) ;
if ( IS_ENABLED ( CONFIG_SOC_MT7621 ) )
if ( new_mtu > 2048 )
return - EINVAL ;
frag_size = fe_max_frag_size ( new_mtu ) ;
if ( new_mtu < 68 | | frag_size > PAGE_SIZE )
return - EINVAL ;
old_mtu = dev - > mtu ;
dev - > mtu = new_mtu ;
if ( ! ( priv - > flags & FE_FLAG_JUMBO_FRAME ) )
return 0 ;
/* return early if the buffer sizes will not change */
if ( old_mtu < = ETH_DATA_LEN & & new_mtu < = ETH_DATA_LEN )
return 0 ;
@ -1408,6 +1400,7 @@ static int fe_change_mtu(struct net_device *dev, int new_mtu)
if ( new_mtu < = ETH_DATA_LEN ) {
fwd_cfg & = ~ FE_GDM1_JMB_EN ;
} else {
frag_size = fe_max_frag_size ( new_mtu ) ;
fwd_cfg & = ~ ( FE_GDM1_JMB_LEN_MASK < < FE_GDM1_JMB_LEN_SHIFT ) ;
fwd_cfg | = ( DIV_ROUND_UP ( frag_size , 1024 ) < <
FE_GDM1_JMB_LEN_SHIFT ) | FE_GDM1_JMB_EN ;
@ -1541,6 +1534,9 @@ static int fe_probe(struct platform_device *pdev)
netdev - > vlan_features = netdev - > hw_features & ~ NETIF_F_HW_VLAN_CTAG_TX ;
netdev - > features | = netdev - > hw_features ;
if ( IS_ENABLED ( CONFIG_SOC_MT7621 ) )
netdev - > max_mtu = 2048 ;
/* fake rx vlan filter func. to support tx vlan offload func */
if ( fe_reg_table [ FE_REG_FE_DMA_VID_BASE ] )
netdev - > features | = NETIF_F_HW_VLAN_CTAG_FILTER ;