From: Ravi Gunasekaran <r-gunasekaran@ti.com>
Date: Wed, 6 Nov 2024 09:17:09 +0000 (+0530)
Subject: net: ti: icssg-prueth: Add VLAN support for HSR mode
X-Git-Tag: v6.13-rc1~135^2~78^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e6bf1f7aea4df918e5ee848d9f6b7ce63135b4be;p=thirdparty%2Fkernel%2Flinux.git

net: ti: icssg-prueth: Add VLAN support for HSR mode

Add support for VLAN addition/deletion in HSR mode.
In HSR mode, even if the host port is not a member of
the VLAN domain, the slave ports should simply forward the
frames. So allow forwarding of all VLAN frames in HSR mode.

Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20241106091710.3308519-4-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/ethernet/ti/icssg/icssg_prueth.c b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
index 0556910938faa..b4d70c6e0cffc 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_prueth.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_prueth.c
@@ -808,6 +808,47 @@ static netdev_features_t emac_ndo_fix_features(struct net_device *ndev,
 	return features;
 }
 
+static int emac_ndo_vlan_rx_add_vid(struct net_device *ndev,
+				    __be16 proto, u16 vid)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	int untag_mask = 0;
+	int port_mask;
+
+	if (prueth->is_hsr_offload_mode) {
+		port_mask = BIT(PRUETH_PORT_HOST) | BIT(emac->port_id);
+		untag_mask = 0;
+
+		netdev_dbg(emac->ndev, "VID add vid:%u port_mask:%X untag_mask %X\n",
+			   vid, port_mask, untag_mask);
+
+		icssg_vtbl_modify(emac, vid, port_mask, untag_mask, true);
+		icssg_set_pvid(emac->prueth, vid, emac->port_id);
+	}
+	return 0;
+}
+
+static int emac_ndo_vlan_rx_del_vid(struct net_device *ndev,
+				    __be16 proto, u16 vid)
+{
+	struct prueth_emac *emac = netdev_priv(ndev);
+	struct prueth *prueth = emac->prueth;
+	int untag_mask = 0;
+	int port_mask;
+
+	if (prueth->is_hsr_offload_mode) {
+		port_mask = BIT(PRUETH_PORT_HOST);
+		untag_mask = 0;
+
+		netdev_dbg(emac->ndev, "VID del vid:%u port_mask:%X untag_mask  %X\n",
+			   vid, port_mask, untag_mask);
+
+		icssg_vtbl_modify(emac, vid, port_mask, untag_mask, false);
+	}
+	return 0;
+}
+
 static const struct net_device_ops emac_netdev_ops = {
 	.ndo_open = emac_ndo_open,
 	.ndo_stop = emac_ndo_stop,
@@ -820,6 +861,8 @@ static const struct net_device_ops emac_netdev_ops = {
 	.ndo_get_stats64 = icssg_ndo_get_stats64,
 	.ndo_get_phys_port_name = icssg_ndo_get_phys_port_name,
 	.ndo_fix_features = emac_ndo_fix_features,
+	.ndo_vlan_rx_add_vid = emac_ndo_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid = emac_ndo_vlan_rx_del_vid,
 };
 
 static int prueth_netdev_init(struct prueth *prueth,
@@ -947,7 +990,7 @@ static int prueth_netdev_init(struct prueth *prueth,
 	ndev->netdev_ops = &emac_netdev_ops;
 	ndev->ethtool_ops = &icssg_ethtool_ops;
 	ndev->hw_features = NETIF_F_SG;
-	ndev->features = ndev->hw_features;
+	ndev->features = ndev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
 	ndev->hw_features |= NETIF_PRUETH_HSR_OFFLOAD_FEATURES;
 
 	netif_napi_add(ndev, &emac->napi_rx, icssg_napi_rx_poll);