[dpdk-dev] [PATCH v5] net/i40e: fix disabling promiscuous mode

[Rosen Xu <rosen.xu@intel.com>]

v5 updates:
===========
 - Modificate some comments for this patch

v4 updates:
===========
 - Add some comments for this patch

v3 updates:
===========
 - Move modification from device close to device disable
 - i40evf_reset_vf() will cause kernel driver enable all vlan promiscuous,
   so unicast/multicast promiscuous disable should set before reset.

v2 updates:
===========
 - Add more comments

In scenario of Kernel Driver runs on PF and PMD runs on VF, PMD exit
doesn't disable promiscuous mode, this will cause vlan filter set by
Kernel Driver will not take effect.

This patch will fix it, add promiscuous disable at device disable.

Fixes: 4861cde46116 ("i40e: new poll mode driver")
Cc: stable@dpdk.org

Signed-off-by: Rosen Xu <rosen.xu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/i40e/i40e_ethdev_vf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 48e7ac2..b8977a6 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -2288,6 +2288,14 @@ static int eth_i40evf_pci_remove(struct rte_pci_device *pci_dev)
 
 	i40evf_dev_stop(dev);
 	i40e_dev_free_queues(dev);
+	/*
+	 * disable promiscuous mode before reset vf
+	 * it fixes missing disable promiscuous mode
+	 * when work with kernel dirver bug issue
+	 */
+	i40evf_dev_promiscuous_disable(dev);
+	i40evf_dev_allmulticast_disable(dev);
+
 	i40evf_reset_vf(hw);
 	i40e_shutdown_adminq(hw);
 	/* disable uio intr before callback unregister */
-- 
1.8.3.1