diff options
| -rw-r--r-- | drivers/net/dsa/ocelot/felix.c | 118 | ||||
| -rw-r--r-- | drivers/net/dsa/ocelot/felix.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 3 | ||||
| -rw-r--r-- | include/soc/mscc/ocelot.h | 1 |
4 files changed, 122 insertions, 3 deletions
diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c index 82dcc21a7172..d2a9d292160c 100644 --- a/drivers/net/dsa/ocelot/felix.c +++ b/drivers/net/dsa/ocelot/felix.c @@ -42,6 +42,25 @@ static struct net_device *felix_classify_db(struct dsa_db db) } } +static int felix_cpu_port_for_master(struct dsa_switch *ds, + struct net_device *master) +{ + struct ocelot *ocelot = ds->priv; + struct dsa_port *cpu_dp; + int lag; + + if (netif_is_lag_master(master)) { + mutex_lock(&ocelot->fwd_domain_lock); + lag = ocelot_bond_get_id(ocelot, master); + mutex_unlock(&ocelot->fwd_domain_lock); + + return lag; + } + + cpu_dp = master->dsa_ptr; + return cpu_dp->index; +} + /* Set up VCAP ES0 rules for pushing a tag_8021q VLAN towards the CPU such that * the tagger can perform RX source port identification. */ @@ -422,6 +441,40 @@ static unsigned long felix_tag_npi_get_host_fwd_mask(struct dsa_switch *ds) return BIT(ocelot->num_phys_ports); } +static int felix_tag_npi_change_master(struct dsa_switch *ds, int port, + struct net_device *master, + struct netlink_ext_ack *extack) +{ + struct dsa_port *dp = dsa_to_port(ds, port), *other_dp; + struct ocelot *ocelot = ds->priv; + + if (netif_is_lag_master(master)) { + NL_SET_ERR_MSG_MOD(extack, + "LAG DSA master only supported using ocelot-8021q"); + return -EOPNOTSUPP; + } + + /* Changing the NPI port breaks user ports still assigned to the old + * one, so only allow it while they're down, and don't allow them to + * come back up until they're all changed to the new one. + */ + dsa_switch_for_each_user_port(other_dp, ds) { + struct net_device *slave = other_dp->slave; + + if (other_dp != dp && (slave->flags & IFF_UP) && + dsa_port_to_master(other_dp) != master) { + NL_SET_ERR_MSG_MOD(extack, + "Cannot change while old master still has users"); + return -EOPNOTSUPP; + } + } + + felix_npi_port_deinit(ocelot, ocelot->npi); + felix_npi_port_init(ocelot, felix_cpu_port_for_master(ds, master)); + + return 0; +} + /* Alternatively to using the NPI functionality, that same hardware MAC * connected internally to the enetc or fman DSA master can be configured to * use the software-defined tag_8021q frame format. As far as the hardware is @@ -433,6 +486,7 @@ static const struct felix_tag_proto_ops felix_tag_npi_proto_ops = { .setup = felix_tag_npi_setup, .teardown = felix_tag_npi_teardown, .get_host_fwd_mask = felix_tag_npi_get_host_fwd_mask, + .change_master = felix_tag_npi_change_master, }; static int felix_tag_8021q_setup(struct dsa_switch *ds) @@ -507,10 +561,24 @@ static unsigned long felix_tag_8021q_get_host_fwd_mask(struct dsa_switch *ds) return dsa_cpu_ports(ds); } +static int felix_tag_8021q_change_master(struct dsa_switch *ds, int port, + struct net_device *master, + struct netlink_ext_ack *extack) +{ + int cpu = felix_cpu_port_for_master(ds, master); + struct ocelot *ocelot = ds->priv; + + ocelot_port_unassign_dsa_8021q_cpu(ocelot, port); + ocelot_port_assign_dsa_8021q_cpu(ocelot, port, cpu); + + return felix_update_trapping_destinations(ds, true); +} + static const struct felix_tag_proto_ops felix_tag_8021q_proto_ops = { .setup = felix_tag_8021q_setup, .teardown = felix_tag_8021q_teardown, .get_host_fwd_mask = felix_tag_8021q_get_host_fwd_mask, + .change_master = felix_tag_8021q_change_master, }; static void felix_set_host_flood(struct dsa_switch *ds, unsigned long mask, @@ -673,6 +741,16 @@ static void felix_port_set_host_flood(struct dsa_switch *ds, int port, !!felix->host_flood_mc_mask, true); } +static int felix_port_change_master(struct dsa_switch *ds, int port, + struct net_device *master, + struct netlink_ext_ack *extack) +{ + struct ocelot *ocelot = ds->priv; + struct felix *felix = ocelot_to_felix(ocelot); + + return felix->tag_proto_ops->change_master(ds, port, master, extack); +} + static int felix_set_ageing_time(struct dsa_switch *ds, unsigned int ageing_time) { @@ -865,8 +943,17 @@ static int felix_lag_join(struct dsa_switch *ds, int port, struct netlink_ext_ack *extack) { struct ocelot *ocelot = ds->priv; + int err; - return ocelot_port_lag_join(ocelot, port, lag.dev, info, extack); + err = ocelot_port_lag_join(ocelot, port, lag.dev, info, extack); + if (err) + return err; + + /* Update the logical LAG port that serves as tag_8021q CPU port */ + if (!dsa_is_cpu_port(ds, port)) + return 0; + + return felix_port_change_master(ds, port, lag.dev, extack); } static int felix_lag_leave(struct dsa_switch *ds, int port, @@ -876,7 +963,11 @@ static int felix_lag_leave(struct dsa_switch *ds, int port, ocelot_port_lag_leave(ocelot, port, lag.dev); - return 0; + /* Update the logical LAG port that serves as tag_8021q CPU port */ + if (!dsa_is_cpu_port(ds, port)) + return 0; + + return felix_port_change_master(ds, port, lag.dev, NULL); } static int felix_lag_change(struct dsa_switch *ds, int port) @@ -1014,6 +1105,27 @@ static void felix_phylink_mac_link_up(struct dsa_switch *ds, int port, felix->info->port_sched_speed_set(ocelot, port, speed); } +static int felix_port_enable(struct dsa_switch *ds, int port, + struct phy_device *phydev) +{ + struct dsa_port *dp = dsa_to_port(ds, port); + struct ocelot *ocelot = ds->priv; + + if (!dsa_port_is_user(dp)) + return 0; + + if (ocelot->npi >= 0) { + struct net_device *master = dsa_port_to_master(dp); + + if (felix_cpu_port_for_master(ds, master) != ocelot->npi) { + dev_err(ds->dev, "Multiple masters are not allowed\n"); + return -EINVAL; + } + } + + return 0; +} + static void felix_port_qos_map_init(struct ocelot *ocelot, int port) { int i; @@ -1913,6 +2025,7 @@ const struct dsa_switch_ops felix_switch_ops = { .phylink_mac_select_pcs = felix_phylink_mac_select_pcs, .phylink_mac_link_down = felix_phylink_mac_link_down, .phylink_mac_link_up = felix_phylink_mac_link_up, + .port_enable = felix_port_enable, .port_fast_age = felix_port_fast_age, .port_fdb_dump = felix_fdb_dump, .port_fdb_add = felix_fdb_add, @@ -1968,6 +2081,7 @@ const struct dsa_switch_ops felix_switch_ops = { .port_add_dscp_prio = felix_port_add_dscp_prio, .port_del_dscp_prio = felix_port_del_dscp_prio, .port_set_host_flood = felix_port_set_host_flood, + .port_change_master = felix_port_change_master, }; struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port) diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h index deb8dde1fc19..e4fd5eef57a0 100644 --- a/drivers/net/dsa/ocelot/felix.h +++ b/drivers/net/dsa/ocelot/felix.h @@ -71,6 +71,9 @@ struct felix_tag_proto_ops { int (*setup)(struct dsa_switch *ds); void (*teardown)(struct dsa_switch *ds); unsigned long (*get_host_fwd_mask)(struct dsa_switch *ds); + int (*change_master)(struct dsa_switch *ds, int port, + struct net_device *master, + struct netlink_ext_ack *extack); }; extern const struct dsa_switch_ops felix_switch_ops; diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 5c18f8986975..7a613b52787d 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1382,7 +1382,7 @@ static u32 ocelot_get_bond_mask(struct ocelot *ocelot, struct net_device *bond) /* The logical port number of a LAG is equal to the lowest numbered physical * port ID present in that LAG. It may change if that port ever leaves the LAG. */ -static int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond) +int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond) { int bond_mask = ocelot_get_bond_mask(ocelot, bond); @@ -1391,6 +1391,7 @@ static int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond) return __ffs(bond_mask); } +EXPORT_SYMBOL_GPL(ocelot_bond_get_id); /* Returns the mask of user ports assigned to this DSA tag_8021q CPU port. * Note that when CPU ports are in a LAG, the user ports are assigned to the diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h index ea19e8ef1f61..967ba30ea636 100644 --- a/include/soc/mscc/ocelot.h +++ b/include/soc/mscc/ocelot.h @@ -1234,6 +1234,7 @@ int ocelot_port_lag_join(struct ocelot *ocelot, int port, void ocelot_port_lag_leave(struct ocelot *ocelot, int port, struct net_device *bond); void ocelot_port_lag_change(struct ocelot *ocelot, int port, bool lag_tx_active); +int ocelot_bond_get_id(struct ocelot *ocelot, struct net_device *bond); int ocelot_devlink_sb_register(struct ocelot *ocelot); void ocelot_devlink_sb_unregister(struct ocelot *ocelot); |