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[net-next,5/6] net: dsa: vsc73xx: Add vlan filtering

Message ID 20230621191302.1405623-5-paweldembicki@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series [net-next,1/6] net: dsa: vsc73xx: convert to PHYLINK | expand

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netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
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netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch warning WARNING: line length of 81 exceeds 80 columns WARNING: line length of 88 exceeds 80 columns WARNING: line length of 92 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Pawel Dembicki June 21, 2023, 7:13 p.m. UTC 
This patch implement vlan filtering for vsc73xx driver.

After vlan filtering start, switch is reconfigured from QinQ to simple
vlan aware mode. It's required, because VSC73XX chips haven't support
for inner vlan tag filter.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
---
 drivers/net/dsa/vitesse-vsc73xx-core.c | 101 +++++++++++++++++++++++++
 1 file changed, 101 insertions(+)

Comments

Linus Walleij June 21, 2023, 9:34 p.m. UTC | #1 
On Wed, Jun 21, 2023 at 9:14 PM Pawel Dembicki <paweldembicki@gmail.com> wrote:

> This patch implement vlan filtering for vsc73xx driver.
>
> After vlan filtering start, switch is reconfigured from QinQ to simple
> vlan aware mode. It's required, because VSC73XX chips haven't support
> for inner vlan tag filter.
>
> Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
index 427b6f964811..fcce47cf6da4 100644
--- a/drivers/net/dsa/vitesse-vsc73xx-core.c
+++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -1239,6 +1239,30 @@  static int vsc73xx_port_set_double_vlan_aware(struct dsa_switch *ds, int port)
 	return ret;
 }
 
+static int
+vsc73xx_port_vlan_filtering(struct dsa_switch *ds, int port,
+			    bool vlan_filtering, struct netlink_ext_ack *extack)
+{
+	int ret, i;
+
+	if (vlan_filtering) {
+		vsc73xx_port_set_vlan_conf(ds, port, VSC73XX_VLAN_AWARE);
+	} else {
+		if (port == CPU_PORT)
+			vsc73xx_port_set_vlan_conf(ds, port, VSC73XX_DOUBLE_VLAN_CPU_AWARE);
+		else
+			vsc73xx_port_set_vlan_conf(ds, port, VSC73XX_DOUBLE_VLAN_AWARE);
+	}
+
+	for (i = 0; i <= 3072; i++) {
+		ret = vsc73xx_port_update_vlan_table(ds, port, i, 0);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
+}
+
 static int vsc73xx_vlan_set_untagged(struct dsa_switch *ds, int port, u16 vid,
 				     bool port_vlan)
 {
@@ -1317,6 +1341,80 @@  static int vsc73xx_vlan_set_pvid(struct dsa_switch *ds, int port, u16 vid,
 	return 0;
 }
 
+static int vsc73xx_port_vlan_add(struct dsa_switch *ds, int port,
+				 const struct switchdev_obj_port_vlan *vlan,
+				 struct netlink_ext_ack *extack)
+{
+	bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+	bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+	int ret;
+
+	/* Be sure to deny alterations to the configuration done by tag_8021q.
+	 */
+	if (vid_is_dsa_8021q(vlan->vid)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Range 3072-4095 reserved for dsa_8021q operation");
+		return -EBUSY;
+	}
+
+	if (untagged && port != CPU_PORT) {
+		ret = vsc73xx_vlan_set_untagged(ds, port, vlan->vid, true);
+		if (ret)
+			return ret;
+	}
+	if (pvid && port != CPU_PORT) {
+		ret = vsc73xx_vlan_set_pvid(ds, port, vlan->vid, true);
+		if (ret)
+			return ret;
+	}
+
+	ret = vsc73xx_port_update_vlan_table(ds, port, vlan->vid, 1);
+
+	return ret;
+}
+
+static int vsc73xx_port_vlan_del(struct dsa_switch *ds, int port,
+				 const struct switchdev_obj_port_vlan *vlan)
+{
+	struct vsc73xx *vsc = ds->priv;
+	u16 vlan_no;
+	int ret;
+	u32 val;
+
+	ret =
+	    vsc73xx_port_update_vlan_table(ds, port, vlan->vid, 0);
+	if (ret)
+		return ret;
+
+	vsc73xx_read(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_TXUPDCFG, &val);
+
+	if (val & VSC73XX_TXUPDCFG_TX_UNTAGGED_VID_ENA) {
+		vsc73xx_read(vsc, VSC73XX_BLOCK_MAC, port,
+			     VSC73XX_TXUPDCFG, &val);
+		vlan_no = (val & VSC73XX_TXUPDCFG_TX_UNTAGGED_VID) >>
+			  VSC73XX_TXUPDCFG_TX_UNTAGGED_VID_SHIFT;
+		if (vlan_no == vlan->vid) {
+			vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
+					    VSC73XX_TXUPDCFG,
+					    VSC73XX_TXUPDCFG_TX_UNTAGGED_VID_ENA,
+					    0);
+			vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
+					    VSC73XX_TXUPDCFG,
+					    VSC73XX_TXUPDCFG_TX_UNTAGGED_VID, 0);
+		}
+	}
+
+	vsc73xx_read(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_CAT_PORT_VLAN, &val);
+	vlan_no = val & VSC73XX_CAT_PORT_VLAN_VLAN_VID;
+	if (vlan_no && vlan_no == vlan->vid) {
+		vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
+				    VSC73XX_CAT_PORT_VLAN,
+				    VSC73XX_CAT_PORT_VLAN_VLAN_VID, 0);
+	}
+
+	return 0;
+}
+
 static void vsc73xx_update_forwarding_map(struct vsc73xx *vsc)
 {
 	int i;
@@ -1537,6 +1635,9 @@  static const struct dsa_switch_ops vsc73xx_ds_ops = {
 	.port_change_mtu = vsc73xx_change_mtu,
 	.port_max_mtu = vsc73xx_get_max_mtu,
 	.port_stp_state_set = vsc73xx_port_stp_state_set,
+	.port_vlan_filtering = vsc73xx_port_vlan_filtering,
+	.port_vlan_add = vsc73xx_port_vlan_add,
+	.port_vlan_del = vsc73xx_port_vlan_del,
 	.tag_8021q_vlan_add = vsc73xx_tag_8021q_vlan_add,
 	.tag_8021q_vlan_del = vsc73xx_tag_8021q_vlan_del,
 };