diff options
| -rw-r--r-- | target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mtk_eth_soc.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mtk_eth_soc.c b/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mtk_eth_soc.c index 6eae661ecf..74639cbb68 100644 --- a/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mtk_eth_soc.c +++ b/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/mtk_eth_soc.c @@ -1384,20 +1384,12 @@ 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; @@ -1419,6 +1411,7 @@ 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; @@ -1552,6 +1545,9 @@ 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; |