[dpdk-stable] [PATCH v2] net/i40e: fix VF link status update

[dpdk-stable] [PATCH v2] net/i40e: fix VF link status update

[Qi Zhang]

VF link status rely on PF's notification, so when PF link status
be updated, it should notify VF to update link status also.
Current implementation only cover part of the situation when PF's link
status is updated, call i40e_notify_all_vfs_link_status in 
i4e_dev_link_update will cover all situationa.

Fixes: bb6722fb5c0e ("net/i40e: fix VF bonded device link down")
Cc: stable@dpdk.org

Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---

v2

- this is a fix.
- remove redundant i40e_notify_all_vfs_link_status call.

 drivers/net/i40e/i40e_ethdev.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 6927fde..083041e 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -428,6 +428,7 @@ static int i40e_cloud_filter_qinq_create(struct i40e_pf *pf);
 static void i40e_ethertype_filter_restore(struct i40e_pf *pf);
 static void i40e_tunnel_filter_restore(struct i40e_pf *pf);
 static void i40e_filter_restore(struct i40e_pf *pf);
+static void i40e_notify_all_vfs_link_status(struct rte_eth_dev *dev);
 
 int i40e_logtype_init;
 int i40e_logtype_driver;
@@ -2307,6 +2308,8 @@ i40e_dev_link_update(struct rte_eth_dev *dev,
 	if (link.link_status == old.link_status)
 		return -1;
 
+	i40e_notify_all_vfs_link_status(dev);
+
 	return 0;
 }
 
@@ -5787,11 +5790,9 @@ i40e_dev_handle_aq_msg(struct rte_eth_dev *dev)
 			break;
 		case i40e_aqc_opc_get_link_status:
 			ret = i40e_dev_link_update(dev, 0);
-			if (!ret) {
-				i40e_notify_all_vfs_link_status(dev);
+			if (!ret)
 				_rte_eth_dev_callback_process(dev,
 					RTE_ETH_EVENT_INTR_LSC, NULL);
-			}
 			break;
 		default:
 			PMD_DRV_LOG(ERR, "Request %u is not supported yet",
-- 
2.7.4

Re: [dpdk-stable] [PATCH v2] net/i40e: fix VF link status update

[Ferruh Yigit]

On 4/12/2017 8:30 PM, Qi Zhang wrote:
> VF link status rely on PF's notification, so when PF link status
> be updated, it should notify VF to update link status also.
> Current implementation only cover part of the situation when PF's link
> status is updated, call i40e_notify_all_vfs_link_status in 
> i4e_dev_link_update will cover all situationa.
> 
> Fixes: bb6722fb5c0e ("net/i40e: fix VF bonded device link down")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net/master, thanks.