net/i40e: keep promiscuous on if allmulticast is enabled

Promisc should not be disabled if the all multicast mode is enabled.
Patch keeps the promiscuous on if all multicast mode is on, this
behavior is also consistent with the implementation done on ixgbe
pmd.

Cc: stable@dpdk.org
Signed-off-by: Huaibin Wang <huaibin.wang@6wind.com>
Signed-off-by: Laurent Hardy <laurent.hardy@6wind.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index f7a685c..6c503de 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -2587,6 +2587,10 @@ i40e_dev_promiscuous_disable(struct rte_eth_dev *dev)
        if (status != I40E_SUCCESS)
                PMD_DRV_LOG(ERR, "Failed to disable unicast promiscuous");
 
+       /* must remain in all_multicast mode */
+       if (dev->data->all_multicast == 1)
+               return;
+
        status = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
                                                        false, NULL);
        if (status != I40E_SUCCESS)