net: hns3: unify maybe_stop_tx for TSO and non-TSO case

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Currently, maybe_stop_tx ops for TSO and non-TSO case share some BD
calculation code, so this patch unifies the maybe_stop_tx by removing
the maybe_stop_tx ops. skb_is_gso() can be used to differentiate the
case between TSO and non-TSO case if there is need to handle special
case for TSO case.

This patch also add tx_copy field in "ethtool --statistics" to help
better debug the performance issue caused by calling skb_copy.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Yunsheng Lin 2019-05-06 10:48:41 +08:00 • committed by David S. Miller

parent 09934b0363

commit 3d5f374189

3 changed files with 50 additions and 86 deletions

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128

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

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7

drivers/net/ethernet/hisilicon/hns3/hns3_enet.h

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1

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

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