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-rw-r--r--drivers/net/dsa/lantiq_gswip.c201
1 files changed, 197 insertions, 4 deletions
diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 568491970d58..c62d923377e3 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -251,6 +251,7 @@ struct gswip_priv {
struct gswip_vlan vlans[64];
int num_gphy_fw;
struct gswip_gphy_fw *gphy_fw;
+ u32 port_vlan_filter;
};
struct gswip_pce_table_entry {
@@ -730,6 +731,11 @@ static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
bool vlan_filtering)
{
struct gswip_priv *priv = ds->priv;
+ struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
+
+ /* Do not allow changing the VLAN filtering options while in bridge */
+ if (!!(priv->port_vlan_filter & BIT(port)) != vlan_filtering && bridge)
+ return -EIO;
if (vlan_filtering) {
/* Use port based VLAN tag */
@@ -951,6 +957,82 @@ static int gswip_vlan_add_unaware(struct gswip_priv *priv,
return 0;
}
+static int gswip_vlan_add_aware(struct gswip_priv *priv,
+ struct net_device *bridge, int port,
+ u16 vid, bool untagged,
+ bool pvid)
+{
+ struct gswip_pce_table_entry vlan_mapping = {0,};
+ unsigned int max_ports = priv->hw_info->max_ports;
+ unsigned int cpu_port = priv->hw_info->cpu_port;
+ bool active_vlan_created = false;
+ int idx = -1;
+ int fid = -1;
+ int i;
+ int err;
+
+ /* Check if there is already a page for this bridge */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge) {
+ if (fid != -1 && fid != priv->vlans[i].fid)
+ dev_err(priv->dev, "one bridge with multiple flow ids\n");
+ fid = priv->vlans[i].fid;
+ if (priv->vlans[i].vid == vid) {
+ idx = i;
+ break;
+ }
+ }
+ }
+
+ /* If this bridge is not programmed yet, add a Active VLAN table
+ * entry in a free slot and prepare the VLAN mapping table entry.
+ */
+ if (idx == -1) {
+ idx = gswip_vlan_active_create(priv, bridge, fid, vid);
+ if (idx < 0)
+ return idx;
+ active_vlan_created = true;
+
+ vlan_mapping.index = idx;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ /* VLAN ID byte, maps to the VLAN ID of vlan active table */
+ vlan_mapping.val[0] = vid;
+ } else {
+ /* Read the existing VLAN mapping entry from the switch */
+ vlan_mapping.index = idx;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ err = gswip_pce_table_entry_read(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
+ err);
+ return err;
+ }
+ }
+
+ vlan_mapping.val[0] = vid;
+ /* Update the VLAN mapping entry and write it to the switch */
+ vlan_mapping.val[1] |= BIT(cpu_port);
+ vlan_mapping.val[2] |= BIT(cpu_port);
+ vlan_mapping.val[1] |= BIT(port);
+ if (untagged)
+ vlan_mapping.val[2] &= ~BIT(port);
+ else
+ vlan_mapping.val[2] |= BIT(port);
+ err = gswip_pce_table_entry_write(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
+ /* In case an Active VLAN was creaetd delete it again */
+ if (active_vlan_created)
+ gswip_vlan_active_remove(priv, idx);
+ return err;
+ }
+
+ if (pvid)
+ gswip_switch_w(priv, idx, GSWIP_PCE_DEFPVID(port));
+
+ return 0;
+}
+
static int gswip_vlan_remove(struct gswip_priv *priv,
struct net_device *bridge, int port,
u16 vid, bool pvid, bool vlan_aware)
@@ -1015,9 +1097,17 @@ static int gswip_port_bridge_join(struct dsa_switch *ds, int port,
struct gswip_priv *priv = ds->priv;
int err;
- err = gswip_vlan_add_unaware(priv, bridge, port);
- if (err)
- return err;
+ /* When the bridge uses VLAN filtering we have to configure VLAN
+ * specific bridges. No bridge is configured here.
+ */
+ if (!br_vlan_enabled(bridge)) {
+ err = gswip_vlan_add_unaware(priv, bridge, port);
+ if (err)
+ return err;
+ priv->port_vlan_filter &= ~BIT(port);
+ } else {
+ priv->port_vlan_filter |= BIT(port);
+ }
return gswip_add_single_port_br(priv, port, false);
}
@@ -1028,7 +1118,106 @@ static void gswip_port_bridge_leave(struct dsa_switch *ds, int port,
gswip_add_single_port_br(priv, port, true);
- gswip_vlan_remove(priv, bridge, port, 0, true, false);
+ /* When the bridge uses VLAN filtering we have to configure VLAN
+ * specific bridges. No bridge is configured here.
+ */
+ if (!br_vlan_enabled(bridge))
+ gswip_vlan_remove(priv, bridge, port, 0, true, false);
+}
+
+static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
+ unsigned int max_ports = priv->hw_info->max_ports;
+ u16 vid;
+ int i;
+ int pos = max_ports;
+
+ /* We only support VLAN filtering on bridges */
+ if (!dsa_is_cpu_port(ds, port) && !bridge)
+ return -EOPNOTSUPP;
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
+ int idx = -1;
+
+ /* Check if there is already a page for this VLAN */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge &&
+ priv->vlans[i].vid == vid) {
+ idx = i;
+ break;
+ }
+ }
+
+ /* If this VLAN is not programmed yet, we have to reserve
+ * one entry in the VLAN table. Make sure we start at the
+ * next position round.
+ */
+ if (idx == -1) {
+ /* Look for a free slot */
+ for (; pos < ARRAY_SIZE(priv->vlans); pos++) {
+ if (!priv->vlans[pos].bridge) {
+ idx = pos;
+ pos++;
+ break;
+ }
+ }
+
+ if (idx == -1)
+ return -ENOSPC;
+ }
+ }
+
+ return 0;
+}
+
+static void gswip_port_vlan_add(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
+ bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+ u16 vid;
+
+ /* We have to receive all packets on the CPU port and should not
+ * do any VLAN filtering here. This is also called with bridge
+ * NULL and then we do not know for which bridge to configure
+ * this.
+ */
+ if (dsa_is_cpu_port(ds, port))
+ return;
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid)
+ gswip_vlan_add_aware(priv, bridge, port, vid, untagged, pvid);
+}
+
+static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
+ bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+ u16 vid;
+ int err;
+
+ /* We have to receive all packets on the CPU port and should not
+ * do any VLAN filtering here. This is also called with bridge
+ * NULL and then we do not know for which bridge to configure
+ * this.
+ */
+ if (dsa_is_cpu_port(ds, port))
+ return 0;
+
+ for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
+ err = gswip_vlan_remove(priv, bridge, port, vid, pvid, true);
+ if (err)
+ return err;
+ }
+
+ return 0;
}
static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
@@ -1271,6 +1460,10 @@ static const struct dsa_switch_ops gswip_switch_ops = {
.port_disable = gswip_port_disable,
.port_bridge_join = gswip_port_bridge_join,
.port_bridge_leave = gswip_port_bridge_leave,
+ .port_vlan_filtering = gswip_port_vlan_filtering,
+ .port_vlan_prepare = gswip_port_vlan_prepare,
+ .port_vlan_add = gswip_port_vlan_add,
+ .port_vlan_del = gswip_port_vlan_del,
.port_stp_state_set = gswip_port_stp_state_set,
.phylink_validate = gswip_phylink_validate,
.phylink_mac_config = gswip_phylink_mac_config,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.