Messages in this thread | | | Date | Sun, 03 Mar 2019 21:15:18 -0800 (PST) | Subject | Re: [PATCH net] net: hns3: add rmb() for rx description | From | David Miller <> |
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From: Huazhong Tan <tanhuazhong@huawei.com> Date: Sat, 2 Mar 2019 16:49:30 +0800
> From: Jian Shen <shenjian15@huawei.com> > > HW can not guarantee complete write desc->rx.size, even though > HNS3_RXD_VLD_B has been set. Driver needs to add rmb() instruction > to make sure desc->rx.size is always valid. > > Fixes: e55970950556 ("net: hns3: Add handling of GRO Pkts not fully RX'ed in NAPI poll") > Signed-off-by: Jian Shen <shenjian15@huawei.com> > Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
dma_rmb() is more appropriate here and more efficient.
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