[v2] net/ice: fix link status recovery

  This patch fix a kernel driver link status issue by recovering
link status when device stop.

Fixes: e6161345d8a9 ("net/ice: support link status change")
Cc: stable@dpdk.org

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 27 ++++++++++++++++++++++++++-
 drivers/net/ice/ice_ethdev.h |  1 +
 2 files changed, 27 insertions(+), 1 deletion(-)
  

On 11/05, Qiming Yang wrote:
>This patch fix a kernel driver link status issue by recovering

s/fix/fixes

>link status when device stop.

s/stop/stops

>
>Fixes: e6161345d8a9 ("net/ice: support link status change")
>Cc: stable@dpdk.org
>
>Signed-off-by: Qiming Yang <qiming.yang@intel.com>
>---
> drivers/net/ice/ice_ethdev.c | 27 ++++++++++++++++++++++++++-
> drivers/net/ice/ice_ethdev.h |  1 +
> 2 files changed, 27 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
>index d746758..212e1c7 100644
>--- a/drivers/net/ice/ice_ethdev.c
>+++ b/drivers/net/ice/ice_ethdev.c
>@@ -2277,7 +2277,10 @@ ice_dev_stop(struct rte_eth_dev *dev)
> 	/* Clear all queues and release mbufs */
> 	ice_clear_queues(dev);
> 
>-	ice_dev_set_link_down(dev);
>+	if (pf->init_link_status)
>+		ice_dev_set_link_up(dev);
>+	else
>+		ice_dev_set_link_down(dev);
> 
> 	/* Clean datapath event and queue/vec mapping */
> 	rte_intr_efd_disable(intr_handle);
>@@ -2648,6 +2651,26 @@ ice_rxq_intr_setup(struct rte_eth_dev *dev)
> 	return 0;
> }
> 
>+static void ice_get_init_link_status(struct rte_eth_dev *dev)

Put the return type in a single line.


Thanks,
Xiaolong
>+{
>+	struct ice_hw *hw = ICE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>+	struct ice_pf *pf = ICE_DEV_PRIVATE_TO_PF(dev->data->dev_private);
>+	bool enable_lse = dev->data->dev_conf.intr_conf.lsc ? true : false;
>+	struct ice_link_status link_status;
>+	int ret;
>+
>+	ret = ice_aq_get_link_info(hw->port_info, enable_lse,
>+				   &link_status, NULL);
>+	if (ret != ICE_SUCCESS) {
>+		PMD_DRV_LOG(ERR, "Failed to get link info");
>+		pf->init_link_status = false;
>+		return;
>+	}
>+
>+	if (link_status.link_info & ICE_AQ_LINK_UP)
>+		pf->init_link_status = true;
>+}
>+
> static int
> ice_dev_start(struct rte_eth_dev *dev)
> {
>@@ -2717,6 +2740,8 @@ ice_dev_start(struct rte_eth_dev *dev)
> 	if (ret != ICE_SUCCESS)
> 		PMD_DRV_LOG(WARNING, "Fail to set phy mask");
> 
>+	ice_get_init_link_status(dev);
>+
> 	ice_dev_set_link_up(dev);
> 
> 	/* Call get_link_info aq commond to enable/disable LSE */
>diff --git a/drivers/net/ice/ice_ethdev.h b/drivers/net/ice/ice_ethdev.h
>index de67e59..27db4e7 100644
>--- a/drivers/net/ice/ice_ethdev.h
>+++ b/drivers/net/ice/ice_ethdev.h
>@@ -369,6 +369,7 @@ struct ice_pf {
> 	struct ice_parser_list rss_parser_list;
> 	struct ice_parser_list perm_parser_list;
> 	struct ice_parser_list dist_parser_list;
>+	bool init_link_status;
> };
> 
> #define ICE_MAX_QUEUE_NUM  2048
>-- 
>2.9.5
>