net: hns: fix skb->truesize underestimation
authorHuazhong Tan <tanhuazhong@huawei.com>
Thu, 23 Aug 2018 03:10:12 +0000 (11:10 +0800)
committerDavid S. Miller <davem@davemloft.net>
Thu, 23 Aug 2018 04:47:36 +0000 (21:47 -0700)
commitb1ccd4c0ab6ef499f47dd84ed4920502a7147bba
treeb752241754f95ae42e84511b4cebd3c140a72cdf
parentac4a5b52f5970479f4b2d94a7f98dbf9eaf675ab
net: hns: fix skb->truesize underestimation

skb->truesize is not meant to be tracking amount of used bytes in a skb,
but amount of reserved/consumed bytes in memory.

For instance, if we use a single byte in last page fragment, we have to
account the full size of the fragment.

So skb_add_rx_frag needs to calculate the length of the entire buffer into
turesize.

Fixes: 9cbe9fd5214e ("net: hns: optimize XGE capability by reducing cpu usage")
Signed-off-by: Huazhong tan <tanhuazhong@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns/hns_enet.c