diff options
Diffstat (limited to 'drivers/net/ethernet/wangxun/libwx/wx_hw.c')
| -rw-r--r-- | drivers/net/ethernet/wangxun/libwx/wx_hw.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c index 7db57f934a91..ca409b4054d0 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c @@ -4,6 +4,7 @@ #include <linux/etherdevice.h> #include <linux/netdevice.h> #include <linux/if_ether.h> +#include <linux/if_vlan.h> #include <linux/iopoll.h> #include <linux/pci.h> @@ -1261,7 +1262,7 @@ static void wx_set_rx_buffer_len(struct wx *wx) struct net_device *netdev = wx->netdev; u32 mhadd, max_frame; - max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; + max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; /* adjust max frame to be at least the size of a standard frame */ if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); @@ -1271,6 +1272,24 @@ static void wx_set_rx_buffer_len(struct wx *wx) wr32(wx, WX_PSR_MAX_SZ, max_frame); } +/** + * wx_change_mtu - Change the Maximum Transfer Unit + * @netdev: network interface device structure + * @new_mtu: new value for maximum frame size + * + * Returns 0 on success, negative on failure + **/ +int wx_change_mtu(struct net_device *netdev, int new_mtu) +{ + struct wx *wx = netdev_priv(netdev); + + netdev->mtu = new_mtu; + wx_set_rx_buffer_len(wx); + + return 0; +} +EXPORT_SYMBOL(wx_change_mtu); + /* Disable the specified rx queue */ void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring) { |