net: hns3: add log for setting tx spare buf size

mainline inclusion
from mainline-origin
commit 2373b35c
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I56XHY
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2373b35c24ff

----------------------------------------------------------------------

For the active tx spare buffer size maybe changed according
to the page size, so add log to notice it.
Signed-off-by: NHao Chen <chenhao288@hisilicon.com>
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NJiantao Xiao <xiaojiantao1@h-partners.com>
Reviewed-by: NYue Haibing <yuehaibing@huawei.com>
Reviewed-by: NJian Shen <shenjian15@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

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

@@ -1885,6 +1885,8 @@ static int hns3_set_tunable(struct net_device *netdev,
 	case ETHTOOL_TX_COPYBREAK_BUF_SIZE:
 		old_tx_spare_buf_size = h->kinfo.tx_spare_buf_size;
 		new_tx_spare_buf_size = *(u32 *)data;
+		netdev_info(netdev, "request to set tx spare buf size from %u to %u\n",
+			    old_tx_spare_buf_size, new_tx_spare_buf_size);
 		ret = hns3_set_tx_spare_buf_size(netdev, new_tx_spare_buf_size);
 		if (ret ||
 		    (!priv->ring->tx_spare && new_tx_spare_buf_size != 0)) {
@@ -1902,6 +1904,10 @@ static int hns3_set_tunable(struct net_device *netdev,
 
 			return ret;
 		}
+
+		netdev_info(netdev, "the actvie tx spare buf size is %u, due to page order\n",
+			    priv->ring->tx_spare->len);
+
 		break;
 	default:
 		ret = -EOPNOTSUPP;