net: hns3: fix tx timeout issue
Currently, the driver knocks the ring doorbell before updating the ring->last_to_use in tx flow. if the hardware transmiting packet and napi poll scheduling are fast enough, it may get the old ring->last_to_use in drivers' napi poll. In this case, the driver will think the tx is not completed, and return directly without clear the flag __QUEUE_STATE_STACK_XOFF, which may cause tx timeout. Fixes: 20d06ca2 ("net: hns3: optimize the tx clean process") Signed-off-by: NJian Shen <shenjian15@huawei.com> Signed-off-by: NJijie Shao <shaojijie@huawei.com> Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
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