Commit 7142529f authored by Antoine Tenart's avatar Antoine Tenart Committed by David S. Miller

net: mscc: ocelot: add VLAN filtering

Add hardware VLAN filtering offloading on ocelot.
Signed-off-by: default avatarAntoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dc96ee37
......@@ -148,12 +148,191 @@ static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
return 0;
}
static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
{
/* Select the VID to configure */
ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid),
ANA_TABLES_VLANTIDX);
/* Set the vlan port members mask and issue a write command */
ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) |
ANA_TABLES_VLANACCESS_CMD_WRITE,
ANA_TABLES_VLANACCESS);
return ocelot_vlant_wait_for_completion(ocelot);
}
static void ocelot_vlan_mode(struct ocelot_port *port,
netdev_features_t features)
{
struct ocelot *ocelot = port->ocelot;
u8 p = port->chip_port;
u32 val;
/* Filtering */
val = ocelot_read(ocelot, ANA_VLANMASK);
if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
val |= BIT(p);
else
val &= ~BIT(p);
ocelot_write(ocelot, val, ANA_VLANMASK);
}
static void ocelot_vlan_port_apply(struct ocelot *ocelot,
struct ocelot_port *port)
{
u32 val;
/* Ingress clasification (ANA_PORT_VLAN_CFG) */
/* Default vlan to clasify for untagged frames (may be zero) */
val = ANA_PORT_VLAN_CFG_VLAN_VID(port->pvid);
if (port->vlan_aware)
val |= ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1);
ocelot_rmw_gix(ocelot, val,
ANA_PORT_VLAN_CFG_VLAN_VID_M |
ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M,
ANA_PORT_VLAN_CFG, port->chip_port);
/* Drop frames with multicast source address */
val = ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA;
if (port->vlan_aware && !port->vid)
/* If port is vlan-aware and tagged, drop untagged and priority
* tagged frames.
*/
val |= ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA |
ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA;
ocelot_write_gix(ocelot, val, ANA_PORT_DROP_CFG, port->chip_port);
/* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q. */
val = REW_TAG_CFG_TAG_TPID_CFG(0);
if (port->vlan_aware) {
if (port->vid)
/* Tag all frames except when VID == DEFAULT_VLAN */
val |= REW_TAG_CFG_TAG_CFG(1);
else
/* Tag all frames */
val |= REW_TAG_CFG_TAG_CFG(3);
}
ocelot_rmw_gix(ocelot, val,
REW_TAG_CFG_TAG_TPID_CFG_M |
REW_TAG_CFG_TAG_CFG_M,
REW_TAG_CFG, port->chip_port);
/* Set default VLAN and tag type to 8021Q. */
val = REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q) |
REW_PORT_VLAN_CFG_PORT_VID(port->vid);
ocelot_rmw_gix(ocelot, val,
REW_PORT_VLAN_CFG_PORT_TPID_M |
REW_PORT_VLAN_CFG_PORT_VID_M,
REW_PORT_VLAN_CFG, port->chip_port);
}
static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
bool untagged)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int ret;
/* Add the port MAC address to with the right VLAN information */
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
ENTRYTYPE_LOCKED);
/* Make the port a member of the VLAN */
ocelot->vlan_mask[vid] |= BIT(port->chip_port);
ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
if (ret)
return ret;
/* Default ingress vlan classification */
if (pvid)
port->pvid = vid;
/* Untagged egress vlan clasification */
if (untagged)
port->vid = vid;
ocelot_vlan_port_apply(ocelot, port);
return 0;
}
static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
{
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
int ret;
/* 8021q removes VID 0 on module unload for all interfaces
* with VLAN filtering feature. We need to keep it to receive
* untagged traffic.
*/
if (vid == 0)
return 0;
/* Del the port MAC address to with the right VLAN information */
ocelot_mact_forget(ocelot, dev->dev_addr, vid);
/* Stop the port from being a member of the vlan */
ocelot->vlan_mask[vid] &= ~BIT(port->chip_port);
ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
if (ret)
return ret;
/* Ingress */
if (port->pvid == vid)
port->pvid = 0;
/* Egress */
if (port->vid == vid)
port->vid = 0;
ocelot_vlan_port_apply(ocelot, port);
return 0;
}
static void ocelot_vlan_init(struct ocelot *ocelot)
{
u16 port, vid;
/* Clear VLAN table, by default all ports are members of all VLANs */
ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
ANA_TABLES_VLANACCESS);
ocelot_vlant_wait_for_completion(ocelot);
/* Configure the port VLAN memberships */
for (vid = 1; vid < VLAN_N_VID; vid++) {
ocelot->vlan_mask[vid] = 0;
ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
}
/* Because VLAN filtering is enabled, we need VID 0 to get untagged
* traffic. It is added automatically if 8021q module is loaded, but
* we can't rely on it since module may be not loaded.
*/
ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0);
ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]);
/* Configure the CPU port to be VLAN aware */
ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(0) |
ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
ANA_PORT_VLAN_CFG, ocelot->num_phys_ports);
/* Set vlan ingress filter mask to all ports but the CPU port by
* default.
*/
ocelot_write(ocelot, GENMASK(9, 0), ANA_VLANMASK);
for (port = 0; port < ocelot->num_phys_ports; port++) {
ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port);
}
}
/* Watermark encode
......@@ -539,6 +718,20 @@ static int ocelot_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct ocelot_port *port = netdev_priv(dev);
struct ocelot *ocelot = port->ocelot;
if (!vid) {
if (!port->vlan_aware)
/* If the bridge is not VLAN aware and no VID was
* provided, set it to pvid to ensure the MAC entry
* matches incoming untagged packets
*/
vid = port->pvid;
else
/* If the bridge is VLAN aware a VID must be provided as
* otherwise the learnt entry wouldn't match any frame.
*/
return -EINVAL;
}
return ocelot_mact_learn(ocelot, port->chip_port, addr, vid,
ENTRYTYPE_NORMAL);
}
......@@ -690,6 +883,30 @@ static int ocelot_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
return ret;
}
static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_add(dev, vid, false, true);
}
static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
u16 vid)
{
return ocelot_vlan_vid_del(dev, vid);
}
static int ocelot_set_features(struct net_device *dev,
netdev_features_t features)
{
struct ocelot_port *port = netdev_priv(dev);
netdev_features_t changed = dev->features ^ features;
if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
ocelot_vlan_mode(port, features);
return 0;
}
static const struct net_device_ops ocelot_port_netdev_ops = {
.ndo_open = ocelot_port_open,
.ndo_stop = ocelot_port_stop,
......@@ -701,6 +918,9 @@ static const struct net_device_ops ocelot_port_netdev_ops = {
.ndo_fdb_add = ocelot_fdb_add,
.ndo_fdb_del = ocelot_fdb_del,
.ndo_fdb_dump = ocelot_fdb_dump,
.ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
.ndo_set_features = ocelot_set_features,
};
static void ocelot_get_strings(struct net_device *netdev, u32 sset, u8 *data)
......@@ -916,6 +1136,10 @@ static int ocelot_port_attr_set(struct net_device *dev,
case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
ocelot_port_attr_ageing_set(ocelot_port, attr->u.ageing_time);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
ocelot_port->vlan_aware = attr->u.vlan_filtering;
ocelot_vlan_port_apply(ocelot_port->ocelot, ocelot_port);
break;
case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
ocelot_port_attr_mc_set(ocelot_port, !attr->u.mc_disabled);
break;
......@@ -927,6 +1151,40 @@ static int ocelot_port_attr_set(struct net_device *dev,
return err;
}
static int ocelot_port_obj_add_vlan(struct net_device *dev,
const struct switchdev_obj_port_vlan *vlan,
struct switchdev_trans *trans)
{
int ret;
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
ret = ocelot_vlan_vid_add(dev, vid,
vlan->flags & BRIDGE_VLAN_INFO_PVID,
vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
if (ret)
return ret;
}
return 0;
}
static int ocelot_port_vlan_del_vlan(struct net_device *dev,
const struct switchdev_obj_port_vlan *vlan)
{
int ret;
u16 vid;
for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
ret = ocelot_vlan_vid_del(dev, vid);
if (ret)
return ret;
}
return 0;
}
static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
const unsigned char *addr,
u16 vid)
......@@ -953,7 +1211,7 @@ static int ocelot_port_obj_add_mdb(struct net_device *dev,
bool new = false;
if (!vid)
vid = 1;
vid = port->pvid;
mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
if (!mc) {
......@@ -994,7 +1252,7 @@ static int ocelot_port_obj_del_mdb(struct net_device *dev,
u16 vid = mdb->vid;
if (!vid)
vid = 1;
vid = port->pvid;
mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
if (!mc)
......@@ -1026,6 +1284,11 @@ static int ocelot_port_obj_add(struct net_device *dev,
int ret = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_port_obj_add_vlan(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj),
trans);
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj),
trans);
......@@ -1043,6 +1306,10 @@ static int ocelot_port_obj_del(struct net_device *dev,
int ret = 0;
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
ret = ocelot_port_vlan_del_vlan(dev,
SWITCHDEV_OBJ_PORT_VLAN(obj));
break;
case SWITCHDEV_OBJ_ID_PORT_MDB:
ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
break;
......@@ -1088,6 +1355,11 @@ static void ocelot_port_bridge_leave(struct ocelot_port *ocelot_port,
if (!ocelot->bridge_mask)
ocelot->hw_bridge_dev = NULL;
/* Clear bridge vlan settings before calling ocelot_vlan_port_apply */
ocelot_port->vlan_aware = 0;
ocelot_port->pvid = 0;
ocelot_port->vid = 0;
}
static void ocelot_set_aggr_pgids(struct ocelot *ocelot)
......@@ -1246,6 +1518,9 @@ static int ocelot_netdevice_port_event(struct net_device *dev,
else
ocelot_port_bridge_leave(ocelot_port,
info->upper_dev);
ocelot_vlan_port_apply(ocelot_port->ocelot,
ocelot_port);
}
if (netif_is_lag_master(info->upper_dev)) {
if (info->linking)
......@@ -1331,6 +1606,9 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
dev->ethtool_ops = &ocelot_ethtool_ops;
dev->switchdev_ops = &ocelot_port_switchdev_ops;
dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN);
dev->dev_addr[ETH_ALEN - 1] += port;
ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
......@@ -1342,6 +1620,9 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port,
goto err_register_netdev;
}
/* Basic L2 initialization */
ocelot_vlan_port_apply(ocelot, ocelot_port);
return 0;
err_register_netdev:
......
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