From: Jie Wang wangjie125@huawei.com
commit 6265e242f7b95f2c1195b42ec912b84ad161470e upstream.
In some configure flow of hns3 driver, for example, change mtu, it will disable MAC through firmware before configuration. But firmware disables MAC asynchronously. The rx traffic may be not stopped in this case.
So fixes it by waiting until mac link is down.
Fixes: a9775bb64aa7 ("net: hns3: fix set and get link ksettings issue") Signed-off-by: Jie Wang wangjie125@huawei.com Signed-off-by: Jijie Shao shaojijie@huawei.com Reviewed-by: Leon Romanovsky leonro@nvidia.com Link: https://lore.kernel.org/r/20230807113452.474224-4-shaojijie@huawei.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -7658,6 +7658,8 @@ static void hclge_enable_fd(struct hnae3
static void hclge_cfg_mac_mode(struct hclge_dev *hdev, bool enable) { +#define HCLGE_LINK_STATUS_WAIT_CNT 3 + struct hclge_desc desc; struct hclge_config_mac_mode_cmd *req = (struct hclge_config_mac_mode_cmd *)desc.data; @@ -7682,9 +7684,15 @@ static void hclge_cfg_mac_mode(struct hc req->txrx_pad_fcs_loop_en = cpu_to_le32(loop_en);
ret = hclge_cmd_send(&hdev->hw, &desc, 1); - if (ret) + if (ret) { dev_err(&hdev->pdev->dev, "mac enable fail, ret =%d.\n", ret); + return; + } + + if (!enable) + hclge_mac_link_status_wait(hdev, HCLGE_LINK_STATUS_DOWN, + HCLGE_LINK_STATUS_WAIT_CNT); }
static int hclge_config_switch_param(struct hclge_dev *hdev, int vfid,