* fix TSO features verify on mt7621 firewrt board
* improve tx clean up. no need to access uncached
memory. also use TX_DTX register instead of
read tx ring DONE bit
* mt7621 need napi weight 64 to get more performance
* remove netif_receive_skb, after kernel version
3.7 tcp4_gro_receive can handle tcp checksum.
on rt2880 use iperf tcp LAN to WAN throughput test.
with gro 135 Mbits/sec. without gro 80.4Mbits/sec.
Signed-off-by: michael lee <igvtee@gmail.com>
SVN-Revision: 44118
bef829efa5