net: hns3: add support to query tx spare buffer size for pf
Add support to query tx spare buffer size from configuration file, and use this info to do spare buffer initialization when the module parameter 'tx_spare_buf_size' is not specified. Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com> Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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