diff options
-rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 34 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_priv.h | 1 | ||||
-rw-r--r-- | drivers/net/dsa/mt7530.c | 20 | ||||
-rw-r--r-- | drivers/net/dsa/mt7530.h | 1 | ||||
-rw-r--r-- | include/net/dsa.h | 21 | ||||
-rw-r--r-- | net/dsa/dsa_priv.h | 2 | ||||
-rw-r--r-- | net/dsa/port.c | 85 | ||||
-rw-r--r-- | net/dsa/slave.c | 24 | ||||
-rw-r--r-- | net/dsa/switch.c | 31 |
9 files changed, 156 insertions, 63 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 0852e5e08177..c8040ecf4425 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -428,7 +428,6 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable, b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt); dev->vlan_enabled = enable; - dev->vlan_filtering_enabled = enable_filtering; } static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100) @@ -665,7 +664,7 @@ int b53_configure_vlan(struct dsa_switch *ds) b53_do_vlan_op(dev, VTA_CMD_CLEAR); } - b53_enable_vlan(dev, false, dev->vlan_filtering_enabled); + b53_enable_vlan(dev, false, ds->vlan_filtering); b53_for_each_port(dev, i) b53_write16(dev, B53_VLAN_PAGE, @@ -966,6 +965,13 @@ static int b53_setup(struct dsa_switch *ds) b53_disable_port(ds, port); } + /* Let DSA handle the case were multiple bridges span the same switch + * device and different VLAN awareness settings are requested, which + * would be breaking filtering semantics for any of the other bridge + * devices. (not hardware supported) + */ + ds->vlan_filtering_is_global = true; + return ret; } @@ -1275,35 +1281,17 @@ EXPORT_SYMBOL(b53_phylink_mac_link_up); int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering) { struct b53_device *dev = ds->priv; - struct net_device *bridge_dev; - unsigned int i; u16 pvid, new_pvid; - /* Handle the case were multiple bridges span the same switch device - * and one of them has a different setting than what is being requested - * which would be breaking filtering semantics for any of the other - * bridge devices. - */ - b53_for_each_port(dev, i) { - bridge_dev = dsa_to_port(ds, i)->bridge_dev; - if (bridge_dev && - bridge_dev != dsa_to_port(ds, port)->bridge_dev && - br_vlan_enabled(bridge_dev) != vlan_filtering) { - netdev_err(bridge_dev, - "VLAN filtering is global to the switch!\n"); - return -EINVAL; - } - } - b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid); new_pvid = pvid; - if (dev->vlan_filtering_enabled && !vlan_filtering) { + if (!vlan_filtering) { /* Filtering is currently enabled, use the default PVID since * the bridge does not expect tagging anymore */ dev->ports[port].pvid = pvid; new_pvid = b53_default_pvid(dev); - } else if (!dev->vlan_filtering_enabled && vlan_filtering) { + } else { /* Filtering is currently disabled, restore the previous PVID */ new_pvid = dev->ports[port].pvid; } @@ -1329,7 +1317,7 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port, if (vlan->vid_end > dev->num_vlans) return -ERANGE; - b53_enable_vlan(dev, true, dev->vlan_filtering_enabled); + b53_enable_vlan(dev, true, ds->vlan_filtering); return 0; } diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h index e3441dcf2d21..f25bc80c4ffc 100644 --- a/drivers/net/dsa/b53/b53_priv.h +++ b/drivers/net/dsa/b53/b53_priv.h @@ -139,7 +139,6 @@ struct b53_device { unsigned int num_vlans; struct b53_vlan *vlans; bool vlan_enabled; - bool vlan_filtering_enabled; unsigned int num_ports; struct b53_port *ports; }; diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 7357b4fc0185..8d531c5f21f3 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -828,11 +828,9 @@ mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port) mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK, VLAN_ATTR(MT7530_VLAN_TRANSPARENT)); - priv->ports[port].vlan_filtering = false; - for (i = 0; i < MT7530_NUM_PORTS; i++) { if (dsa_is_user_port(ds, i) && - priv->ports[i].vlan_filtering) { + dsa_port_is_vlan_filtering(&ds->ports[i])) { all_user_ports_removed = false; break; } @@ -891,8 +889,8 @@ mt7530_port_bridge_leave(struct dsa_switch *ds, int port, * And the other port's port matrix cannot be broken when the * other port is still a VLAN-aware port. */ - if (!priv->ports[i].vlan_filtering && - dsa_is_user_port(ds, i) && i != port) { + if (dsa_is_user_port(ds, i) && i != port && + !dsa_port_is_vlan_filtering(&ds->ports[i])) { if (dsa_to_port(ds, i)->bridge_dev != bridge) continue; if (priv->ports[i].enable) @@ -910,8 +908,6 @@ mt7530_port_bridge_leave(struct dsa_switch *ds, int port, PCR_MATRIX(BIT(MT7530_CPU_PORT))); priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT)); - mt7530_port_set_vlan_unaware(ds, port); - mutex_unlock(&priv->reg_mutex); } @@ -1013,10 +1009,6 @@ static int mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering) { - struct mt7530_priv *priv = ds->priv; - - priv->ports[port].vlan_filtering = vlan_filtering; - if (vlan_filtering) { /* The port is being kept as VLAN-unaware port when bridge is * set up with vlan_filtering not being set, Otherwise, the @@ -1025,6 +1017,8 @@ mt7530_port_vlan_filtering(struct dsa_switch *ds, int port, */ mt7530_port_set_vlan_aware(ds, port); mt7530_port_set_vlan_aware(ds, MT7530_CPU_PORT); + } else { + mt7530_port_set_vlan_unaware(ds, port); } return 0; @@ -1139,7 +1133,7 @@ mt7530_port_vlan_add(struct dsa_switch *ds, int port, /* The port is kept as VLAN-unaware if bridge with vlan_filtering not * being set. */ - if (!priv->ports[port].vlan_filtering) + if (!dsa_port_is_vlan_filtering(&ds->ports[port])) return; mutex_lock(&priv->reg_mutex); @@ -1170,7 +1164,7 @@ mt7530_port_vlan_del(struct dsa_switch *ds, int port, /* The port is kept as VLAN-unaware if bridge with vlan_filtering not * being set. */ - if (!priv->ports[port].vlan_filtering) + if (!dsa_port_is_vlan_filtering(&ds->ports[port])) return 0; mutex_lock(&priv->reg_mutex); diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index a95ed958df5b..1eec7bdc283a 100644 --- a/drivers/net/dsa/mt7530.h +++ b/drivers/net/dsa/mt7530.h @@ -410,7 +410,6 @@ struct mt7530_port { bool enable; u32 pm; u16 pvid; - bool vlan_filtering; }; /* struct mt7530_priv - This is the main data structure for holding the state diff --git a/include/net/dsa.h b/include/net/dsa.h index b550f7bb5314..1e6b4efc80b9 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -161,6 +161,7 @@ struct dsa_port { const char *mac; struct device_node *dn; unsigned int ageing_time; + bool vlan_filtering; u8 stp_state; struct net_device *bridge_dev; struct devlink_port devlink_port; @@ -227,6 +228,16 @@ struct dsa_switch { /* Number of switch port queues */ unsigned int num_tx_queues; + /* Disallow bridge core from requesting different VLAN awareness + * settings on ports if not hardware-supported + */ + bool vlan_filtering_is_global; + + /* In case vlan_filtering_is_global is set, the VLAN awareness state + * should be retrieved from here and not from the per-port settings. + */ + bool vlan_filtering; + unsigned long *bitmap; unsigned long _bitmap; @@ -294,6 +305,16 @@ static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); } +static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) +{ + const struct dsa_switch *ds = dp->ds; + + if (ds->vlan_filtering_is_global) + return ds->vlan_filtering; + else + return dp->vlan_filtering; +} + typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, bool is_static, void *data); struct dsa_switch_ops { diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index e860512d673a..37751b505572 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -171,6 +171,8 @@ int dsa_port_vlan_add(struct dsa_port *dp, struct switchdev_trans *trans); int dsa_port_vlan_del(struct dsa_port *dp, const struct switchdev_obj_port_vlan *vlan); +int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags); +int dsa_port_vid_del(struct dsa_port *dp, u16 vid); int dsa_port_link_register_of(struct dsa_port *dp); void dsa_port_link_unregister_of(struct dsa_port *dp); diff --git a/net/dsa/port.c b/net/dsa/port.c index caeef4c99dc0..1ed287b2badd 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -154,19 +154,67 @@ void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) dsa_port_set_state_now(dp, BR_STATE_FORWARDING); } +static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, + bool vlan_filtering) +{ + struct dsa_switch *ds = dp->ds; + int i; + + if (!ds->vlan_filtering_is_global) + return true; + + /* For cases where enabling/disabling VLAN awareness is global to the + * switch, we need to handle the case where multiple bridges span + * different ports of the same switch device and one of them has a + * different setting than what is being requested. + */ + for (i = 0; i < ds->num_ports; i++) { + struct net_device *other_bridge; + + other_bridge = dsa_to_port(ds, i)->bridge_dev; + if (!other_bridge) + continue; + /* If it's the same bridge, it also has same + * vlan_filtering setting => no need to check + */ + if (other_bridge == dp->bridge_dev) + continue; + if (br_vlan_enabled(other_bridge) != vlan_filtering) { + dev_err(ds->dev, "VLAN filtering is a global setting\n"); + return false; + } + } + return true; +} + int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, struct switchdev_trans *trans) { struct dsa_switch *ds = dp->ds; + int err; /* bridge skips -EOPNOTSUPP, so skip the prepare phase */ if (switchdev_trans_ph_prepare(trans)) return 0; - if (ds->ops->port_vlan_filtering) - return ds->ops->port_vlan_filtering(ds, dp->index, - vlan_filtering); + if (!ds->ops->port_vlan_filtering) + return 0; + + if (!dsa_port_can_apply_vlan_filtering(dp, vlan_filtering)) + return -EINVAL; + + if (dsa_port_is_vlan_filtering(dp) == vlan_filtering) + return 0; + + err = ds->ops->port_vlan_filtering(ds, dp->index, + vlan_filtering); + if (err) + return err; + if (ds->vlan_filtering_is_global) + ds->vlan_filtering = vlan_filtering; + else + dp->vlan_filtering = vlan_filtering; return 0; } @@ -322,6 +370,37 @@ int dsa_port_vlan_del(struct dsa_port *dp, return 0; } +int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags) +{ + struct switchdev_obj_port_vlan vlan = { + .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, + .flags = flags, + .vid_begin = vid, + .vid_end = vid, + }; + struct switchdev_trans trans; + int err; + + trans.ph_prepare = true; + err = dsa_port_vlan_add(dp, &vlan, &trans); + if (err == -EOPNOTSUPP) + return 0; + + trans.ph_prepare = false; + return dsa_port_vlan_add(dp, &vlan, &trans); +} + +int dsa_port_vid_del(struct dsa_port *dp, u16 vid) +{ + struct switchdev_obj_port_vlan vlan = { + .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN, + .vid_begin = vid, + .vid_end = vid, + }; + + return dsa_port_vlan_del(dp, &vlan); +} + static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) { struct device_node *phy_dn; diff --git a/net/dsa/slave.c b/net/dsa/slave.c index ce26dddc8270..8ad9bf957da1 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -1001,13 +1001,6 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) { struct dsa_port *dp = dsa_slave_to_port(dev); - struct switchdev_obj_port_vlan vlan = { - .vid_begin = vid, - .vid_end = vid, - /* This API only allows programming tagged, non-PVID VIDs */ - .flags = 0, - }; - struct switchdev_trans trans; struct bridge_vlan_info info; int ret; @@ -1024,25 +1017,14 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto, return -EBUSY; } - trans.ph_prepare = true; - ret = dsa_port_vlan_add(dp, &vlan, &trans); - if (ret == -EOPNOTSUPP) - return 0; - - trans.ph_prepare = false; - return dsa_port_vlan_add(dp, &vlan, &trans); + /* This API only allows programming tagged, non-PVID VIDs */ + return dsa_port_vid_add(dp, vid, 0); } static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) { struct dsa_port *dp = dsa_slave_to_port(dev); - struct switchdev_obj_port_vlan vlan = { - .vid_begin = vid, - .vid_end = vid, - /* This API only allows programming tagged, non-PVID VIDs */ - .flags = 0, - }; struct bridge_vlan_info info; int ret; @@ -1059,7 +1041,7 @@ static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, return -EBUSY; } - ret = dsa_port_vlan_del(dp, &vlan); + ret = dsa_port_vid_del(dp, vid); if (ret == -EOPNOTSUPP) ret = 0; diff --git a/net/dsa/switch.c b/net/dsa/switch.c index e1fae969aa73..7d8cd9bc0ecc 100644 --- a/net/dsa/switch.c +++ b/net/dsa/switch.c @@ -10,6 +10,7 @@ * (at your option) any later version. */ +#include <linux/if_bridge.h> #include <linux/netdevice.h> #include <linux/notifier.h> #include <linux/if_vlan.h> @@ -71,6 +72,9 @@ static int dsa_switch_bridge_join(struct dsa_switch *ds, static int dsa_switch_bridge_leave(struct dsa_switch *ds, struct dsa_notifier_bridge_info *info) { + bool unset_vlan_filtering = br_vlan_enabled(info->br); + int err, i; + if (ds->index == info->sw_index && ds->ops->port_bridge_leave) ds->ops->port_bridge_leave(ds, info->port, info->br); @@ -78,6 +82,31 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds, ds->ops->crosschip_bridge_leave(ds, info->sw_index, info->port, info->br); + /* If the bridge was vlan_filtering, the bridge core doesn't trigger an + * event for changing vlan_filtering setting upon slave ports leaving + * it. That is a good thing, because that lets us handle it and also + * handle the case where the switch's vlan_filtering setting is global + * (not per port). When that happens, the correct moment to trigger the + * vlan_filtering callback is only when the last port left this bridge. + */ + if (unset_vlan_filtering && ds->vlan_filtering_is_global) { + for (i = 0; i < ds->num_ports; i++) { + if (i == info->port) + continue; + if (dsa_to_port(ds, i)->bridge_dev == info->br) { + unset_vlan_filtering = false; + break; + } + } + } + if (unset_vlan_filtering) { + struct switchdev_trans trans = {0}; + + err = dsa_port_vlan_filtering(&ds->ports[info->port], + false, &trans); + if (err && err != EOPNOTSUPP) + return err; + } return 0; } @@ -196,7 +225,7 @@ static int dsa_port_vlan_check(struct dsa_switch *ds, int port, if (!dp->bridge_dev) return err; - /* dsa_slave_vlan_rx_{add,kill}_vid() cannot use the prepare pharse and + /* dsa_slave_vlan_rx_{add,kill}_vid() cannot use the prepare phase and * already checks whether there is an overlapping bridge VLAN entry * with the same VID, so here we only need to check that if we are * adding a bridge VLAN entry there is not an overlapping VLAN device |