linux-kernel - [PATCH 3/6] net/ncsi: Enable VLAN filtering when callback is registered

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Date:   Sat, 11 Jun 2022 00:48:05 +0800
From:   Jiaqing Zhao <jiaqing.zhao@...ux.intel.com>
To:     Samuel Mendoza-Jonas <sam@...dozajonas.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org
Cc:     Jiaqing Zhao <jiaqing.zhao@...ux.intel.com>
Subject: [PATCH 3/6] net/ncsi: Enable VLAN filtering when callback is registered

Sets NETIF_F_HW_VLAN_CTAG_FILTER flag to enable hardware VLAN filtering
of NCSI when the ndo_vlan_rx_{add,kill}_vid callbacks are registered to
the NCSI handlers. Previously it was done in the mac driver, this patch
puts it to the NCSI drvier to make it more general.

Signed-off-by: Jiaqing Zhao <jiaqing.zhao@...ux.intel.com>
---
 net/ncsi/ncsi-manage.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index a8f7a2ff52a0..3fb95f29e3e2 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -1807,6 +1807,11 @@ struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
 			ndp->mlx_multi_host = true;
 	}
 
+	/* Enable hardware VLAN filtering */
+	if (dev->netdev_ops->ndo_vlan_rx_add_vid == ncsi_vlan_rx_add_vid &&
+	    dev->netdev_ops->ndo_vlan_rx_kill_vid == ncsi_vlan_rx_kill_vid)
+		dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+
 	return nd;
 }
 EXPORT_SYMBOL_GPL(ncsi_register_dev);
-- 
2.34.1