netdev - [PATCH v2 net-next] net: stmmac: propagate feature flags to vlan

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Date:   Mon, 17 Apr 2023 21:28:45 +0200
From:   Corinna Vinschen <vinschen@...hat.com>
To:     netdev@...r.kernel.org,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        alexandre.torgue@...s.st.com, Jose Abreu <joabreu@...opsys.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH v2 net-next] net: stmmac: propagate feature flags to vlan

stmmac_dev_probe doesn't propagate feature flags to VLANs.  So features
like offloading don't correspond with the general features and it's not
possible to manipulate features via ethtool -K to affect VLANs.

Propagate feature flags to vlan features.  Drop TSO feature because
it does not work on VLANs yet.

Signed-off-by: Corinna Vinschen <vinschen@...hat.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d7fcab057032..8ab67c020a08 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7253,6 +7253,10 @@ int stmmac_dvr_probe(struct device *device,
 	if (priv->dma_cap.rssen && priv->plat->rss_en)
 		ndev->features |= NETIF_F_RXHASH;
 
+	ndev->vlan_features |= ndev->features;
+	/* TSO doesn't work on VLANs yet */
+	ndev->vlan_features &= ~NETIF_F_TSO;
+
 	/* MTU range: 46 - hw-specific max */
 	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 	if (priv->plat->has_xgmac)
-- 
2.31.1