[dpdk-dev] [PATCH] i40e: Enable multicast promiscuous mode when promiscuous mode enabled for i40e driver

[Heng Ding <hengx.ding@intel.com>]

From: Ding Heng <hengx.ding@intel.com>

IPv6 will run NDP with multicast packets, but multicast packets will be
filtered by i40e driver by default. So we need to enable multicast when
promiscuous mode is on, or IPv6 will fail on these cards when running
testpmd and kni app.

Signed-off-by: Ding Heng <hengx.ding@intel.com>
---
 lib/librte_pmd_i40e/i40e_ethdev.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index 9ed31b5..539dae5 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -755,6 +755,12 @@ i40e_dev_promiscuous_enable(struct rte_eth_dev *dev)
 							true, NULL);
 	if (status != I40E_SUCCESS)
 		PMD_DRV_LOG(ERR, "Failed to enable unicast promiscuous\n");
+
+	status = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
+							TRUE, NULL);
+	if (status != I40E_SUCCESS)
+		PMD_DRV_LOG(ERR, "Failed to enable multicast promiscuous\n");
+
 }
 
 static void
@@ -769,6 +775,11 @@ i40e_dev_promiscuous_disable(struct rte_eth_dev *dev)
 							false, NULL);
 	if (status != I40E_SUCCESS)
 		PMD_DRV_LOG(ERR, "Failed to disable unicast promiscuous\n");
+
+	status = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
+							false, NULL);
+	if (status != I40E_SUCCESS)
+		PMD_DRV_LOG(ERR, "Failed to disable multicast promiscuous\n");
 }
 
 static void
@@ -792,6 +803,9 @@ i40e_dev_allmulticast_disable(struct rte_eth_dev *dev)
 	struct i40e_vsi *vsi = pf->main_vsi;
 	int ret;
 
+	if (dev->data->promiscuous == 1)
+		return; /* must remain in all_multicast mode */
+
 	ret = i40e_aq_set_vsi_multicast_promiscuous(hw,
 				vsi->seid, FALSE, NULL);
 	if (ret != I40E_SUCCESS)
-- 
1.9.3