| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Handling of a single switch port |
| * |
| * Copyright (c) 2017 Savoir-faire Linux Inc. |
| * Vivien Didelot <vivien.didelot@savoirfairelinux.com> |
| */ |
| |
| #include <linux/if_bridge.h> |
| #include <linux/notifier.h> |
| #include <linux/of_mdio.h> |
| #include <linux/of_net.h> |
| |
| #include "dsa_priv.h" |
| |
| static int dsa_port_notify(const struct dsa_port *dp, unsigned long e, void *v) |
| { |
| struct raw_notifier_head *nh = &dp->ds->dst->nh; |
| int err; |
| |
| err = raw_notifier_call_chain(nh, e, v); |
| |
| return notifier_to_errno(err); |
| } |
| |
| int dsa_port_set_state(struct dsa_port *dp, u8 state, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP; |
| |
| if (ds->ops->port_stp_state_set) |
| ds->ops->port_stp_state_set(ds, port, state); |
| |
| if (ds->ops->port_fast_age) { |
| /* Fast age FDB entries or flush appropriate forwarding database |
| * for the given port, if we are moving it from Learning or |
| * Forwarding state, to Disabled or Blocking or Listening state. |
| */ |
| |
| if ((dp->stp_state == BR_STATE_LEARNING || |
| dp->stp_state == BR_STATE_FORWARDING) && |
| (state == BR_STATE_DISABLED || |
| state == BR_STATE_BLOCKING || |
| state == BR_STATE_LISTENING)) |
| ds->ops->port_fast_age(ds, port); |
| } |
| |
| dp->stp_state = state; |
| |
| return 0; |
| } |
| |
| static void dsa_port_set_state_now(struct dsa_port *dp, u8 state) |
| { |
| int err; |
| |
| err = dsa_port_set_state(dp, state, NULL); |
| if (err) |
| pr_err("DSA: failed to set STP state %u (%d)\n", state, err); |
| } |
| |
| int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| int err; |
| |
| if (ds->ops->port_enable) { |
| err = ds->ops->port_enable(ds, port, phy); |
| if (err) |
| return err; |
| } |
| |
| if (!dp->bridge_dev) |
| dsa_port_set_state_now(dp, BR_STATE_FORWARDING); |
| |
| if (dp->pl) |
| phylink_start(dp->pl); |
| |
| return 0; |
| } |
| |
| int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy) |
| { |
| int err; |
| |
| rtnl_lock(); |
| err = dsa_port_enable_rt(dp, phy); |
| rtnl_unlock(); |
| |
| return err; |
| } |
| |
| void dsa_port_disable_rt(struct dsa_port *dp) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| |
| if (dp->pl) |
| phylink_stop(dp->pl); |
| |
| if (!dp->bridge_dev) |
| dsa_port_set_state_now(dp, BR_STATE_DISABLED); |
| |
| if (ds->ops->port_disable) |
| ds->ops->port_disable(ds, port); |
| } |
| |
| void dsa_port_disable(struct dsa_port *dp) |
| { |
| rtnl_lock(); |
| dsa_port_disable_rt(dp); |
| rtnl_unlock(); |
| } |
| |
| int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br) |
| { |
| struct dsa_notifier_bridge_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .br = br, |
| }; |
| int err; |
| |
| /* Set the flooding mode before joining the port in the switch */ |
| err = dsa_port_bridge_flags(dp, BR_FLOOD | BR_MCAST_FLOOD, NULL); |
| if (err) |
| return err; |
| |
| /* Here the interface is already bridged. Reflect the current |
| * configuration so that drivers can program their chips accordingly. |
| */ |
| dp->bridge_dev = br; |
| |
| err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_JOIN, &info); |
| |
| /* The bridging is rolled back on error */ |
| if (err) { |
| dsa_port_bridge_flags(dp, 0, NULL); |
| dp->bridge_dev = NULL; |
| } |
| |
| return err; |
| } |
| |
| void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) |
| { |
| struct dsa_notifier_bridge_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .br = br, |
| }; |
| int err; |
| |
| /* Here the port is already unbridged. Reflect the current configuration |
| * so that drivers can program their chips accordingly. |
| */ |
| dp->bridge_dev = NULL; |
| |
| err = dsa_port_notify(dp, DSA_NOTIFIER_BRIDGE_LEAVE, &info); |
| if (err) |
| pr_err("DSA: failed to notify DSA_NOTIFIER_BRIDGE_LEAVE\n"); |
| |
| /* Port is leaving the bridge, disable flooding */ |
| dsa_port_bridge_flags(dp, 0, NULL); |
| |
| /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer, |
| * so allow it to be in BR_STATE_FORWARDING to be kept functional |
| */ |
| 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 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; |
| } |
| |
| int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock, |
| struct switchdev_trans *trans) |
| { |
| unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock); |
| unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); |
| struct dsa_notifier_ageing_time_info info = { |
| .ageing_time = ageing_time, |
| .trans = trans, |
| }; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
| |
| dp->ageing_time = ageing_time; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_AGEING_TIME, &info); |
| } |
| |
| int dsa_port_pre_bridge_flags(const struct dsa_port *dp, unsigned long flags, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->port_egress_floods || |
| (flags & ~(BR_FLOOD | BR_MCAST_FLOOD))) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| int dsa_port_bridge_flags(const struct dsa_port *dp, unsigned long flags, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| int err = 0; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| if (ds->ops->port_egress_floods) |
| err = ds->ops->port_egress_floods(ds, port, flags & BR_FLOOD, |
| flags & BR_MCAST_FLOOD); |
| |
| return err; |
| } |
| |
| int dsa_port_mrouter(struct dsa_port *dp, bool mrouter, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return ds->ops->port_egress_floods ? 0 : -EOPNOTSUPP; |
| |
| return ds->ops->port_egress_floods(ds, port, true, mrouter); |
| } |
| |
| int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
| u16 vid) |
| { |
| struct dsa_notifier_fdb_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .addr = addr, |
| .vid = vid, |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_FDB_ADD, &info); |
| } |
| |
| int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, |
| u16 vid) |
| { |
| struct dsa_notifier_fdb_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .addr = addr, |
| .vid = vid, |
| |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_FDB_DEL, &info); |
| } |
| |
| int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data) |
| { |
| struct dsa_switch *ds = dp->ds; |
| int port = dp->index; |
| |
| if (!ds->ops->port_fdb_dump) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->port_fdb_dump(ds, port, cb, data); |
| } |
| |
| int dsa_port_mdb_add(const struct dsa_port *dp, |
| const struct switchdev_obj_port_mdb *mdb, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_notifier_mdb_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .trans = trans, |
| .mdb = mdb, |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_MDB_ADD, &info); |
| } |
| |
| int dsa_port_mdb_del(const struct dsa_port *dp, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| struct dsa_notifier_mdb_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .mdb = mdb, |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_MDB_DEL, &info); |
| } |
| |
| int dsa_port_vlan_add(struct dsa_port *dp, |
| const struct switchdev_obj_port_vlan *vlan, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_notifier_vlan_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .trans = trans, |
| .vlan = vlan, |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_ADD, &info); |
| } |
| |
| int dsa_port_vlan_del(struct dsa_port *dp, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct dsa_notifier_vlan_info info = { |
| .sw_index = dp->ds->index, |
| .port = dp->index, |
| .vlan = vlan, |
| }; |
| |
| return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info); |
| } |
| |
| 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) |
| return err; |
| |
| trans.ph_prepare = false; |
| return dsa_port_vlan_add(dp, &vlan, &trans); |
| } |
| EXPORT_SYMBOL(dsa_port_vid_add); |
| |
| 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); |
| } |
| EXPORT_SYMBOL(dsa_port_vid_del); |
| |
| static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp) |
| { |
| struct device_node *phy_dn; |
| struct phy_device *phydev; |
| |
| phy_dn = of_parse_phandle(dp->dn, "phy-handle", 0); |
| if (!phy_dn) |
| return NULL; |
| |
| phydev = of_phy_find_device(phy_dn); |
| if (!phydev) { |
| of_node_put(phy_dn); |
| return ERR_PTR(-EPROBE_DEFER); |
| } |
| |
| of_node_put(phy_dn); |
| return phydev; |
| } |
| |
| static void dsa_port_phylink_validate(struct phylink_config *config, |
| unsigned long *supported, |
| struct phylink_link_state *state) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->phylink_validate) |
| return; |
| |
| ds->ops->phylink_validate(ds, dp->index, supported, state); |
| } |
| |
| static void dsa_port_phylink_mac_pcs_get_state(struct phylink_config *config, |
| struct phylink_link_state *state) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct dsa_switch *ds = dp->ds; |
| |
| /* Only called for inband modes */ |
| if (!ds->ops->phylink_mac_link_state) { |
| state->link = 0; |
| return; |
| } |
| |
| if (ds->ops->phylink_mac_link_state(ds, dp->index, state) < 0) |
| state->link = 0; |
| } |
| |
| static void dsa_port_phylink_mac_config(struct phylink_config *config, |
| unsigned int mode, |
| const struct phylink_link_state *state) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->phylink_mac_config) |
| return; |
| |
| ds->ops->phylink_mac_config(ds, dp->index, mode, state); |
| } |
| |
| static void dsa_port_phylink_mac_an_restart(struct phylink_config *config) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->phylink_mac_an_restart) |
| return; |
| |
| ds->ops->phylink_mac_an_restart(ds, dp->index); |
| } |
| |
| static void dsa_port_phylink_mac_link_down(struct phylink_config *config, |
| unsigned int mode, |
| phy_interface_t interface) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct phy_device *phydev = NULL; |
| struct dsa_switch *ds = dp->ds; |
| |
| if (dsa_is_user_port(ds, dp->index)) |
| phydev = dp->slave->phydev; |
| |
| if (!ds->ops->phylink_mac_link_down) { |
| if (ds->ops->adjust_link && phydev) |
| ds->ops->adjust_link(ds, dp->index, phydev); |
| return; |
| } |
| |
| ds->ops->phylink_mac_link_down(ds, dp->index, mode, interface); |
| } |
| |
| static void dsa_port_phylink_mac_link_up(struct phylink_config *config, |
| unsigned int mode, |
| phy_interface_t interface, |
| struct phy_device *phydev) |
| { |
| struct dsa_port *dp = container_of(config, struct dsa_port, pl_config); |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->phylink_mac_link_up) { |
| if (ds->ops->adjust_link && phydev) |
| ds->ops->adjust_link(ds, dp->index, phydev); |
| return; |
| } |
| |
| ds->ops->phylink_mac_link_up(ds, dp->index, mode, interface, phydev); |
| } |
| |
| const struct phylink_mac_ops dsa_port_phylink_mac_ops = { |
| .validate = dsa_port_phylink_validate, |
| .mac_pcs_get_state = dsa_port_phylink_mac_pcs_get_state, |
| .mac_config = dsa_port_phylink_mac_config, |
| .mac_an_restart = dsa_port_phylink_mac_an_restart, |
| .mac_link_down = dsa_port_phylink_mac_link_down, |
| .mac_link_up = dsa_port_phylink_mac_link_up, |
| }; |
| |
| static int dsa_port_setup_phy_of(struct dsa_port *dp, bool enable) |
| { |
| struct dsa_switch *ds = dp->ds; |
| struct phy_device *phydev; |
| int port = dp->index; |
| int err = 0; |
| |
| phydev = dsa_port_get_phy_device(dp); |
| if (!phydev) |
| return 0; |
| |
| if (IS_ERR(phydev)) |
| return PTR_ERR(phydev); |
| |
| if (enable) { |
| err = genphy_resume(phydev); |
| if (err < 0) |
| goto err_put_dev; |
| |
| err = genphy_read_status(phydev); |
| if (err < 0) |
| goto err_put_dev; |
| } else { |
| err = genphy_suspend(phydev); |
| if (err < 0) |
| goto err_put_dev; |
| } |
| |
| if (ds->ops->adjust_link) |
| ds->ops->adjust_link(ds, port, phydev); |
| |
| dev_dbg(ds->dev, "enabled port's phy: %s", phydev_name(phydev)); |
| |
| err_put_dev: |
| put_device(&phydev->mdio.dev); |
| return err; |
| } |
| |
| static int dsa_port_fixed_link_register_of(struct dsa_port *dp) |
| { |
| struct device_node *dn = dp->dn; |
| struct dsa_switch *ds = dp->ds; |
| struct phy_device *phydev; |
| int port = dp->index; |
| phy_interface_t mode; |
| int err; |
| |
| err = of_phy_register_fixed_link(dn); |
| if (err) { |
| dev_err(ds->dev, |
| "failed to register the fixed PHY of port %d\n", |
| port); |
| return err; |
| } |
| |
| phydev = of_phy_find_device(dn); |
| |
| err = of_get_phy_mode(dn, &mode); |
| if (err) |
| mode = PHY_INTERFACE_MODE_NA; |
| phydev->interface = mode; |
| |
| genphy_read_status(phydev); |
| |
| if (ds->ops->adjust_link) |
| ds->ops->adjust_link(ds, port, phydev); |
| |
| put_device(&phydev->mdio.dev); |
| |
| return 0; |
| } |
| |
| static int dsa_port_phylink_register(struct dsa_port *dp) |
| { |
| struct dsa_switch *ds = dp->ds; |
| struct device_node *port_dn = dp->dn; |
| phy_interface_t mode; |
| int err; |
| |
| err = of_get_phy_mode(port_dn, &mode); |
| if (err) |
| mode = PHY_INTERFACE_MODE_NA; |
| |
| dp->pl_config.dev = ds->dev; |
| dp->pl_config.type = PHYLINK_DEV; |
| dp->pl_config.pcs_poll = ds->pcs_poll; |
| |
| dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), |
| mode, &dsa_port_phylink_mac_ops); |
| if (IS_ERR(dp->pl)) { |
| pr_err("error creating PHYLINK: %ld\n", PTR_ERR(dp->pl)); |
| return PTR_ERR(dp->pl); |
| } |
| |
| err = phylink_of_phy_connect(dp->pl, port_dn, 0); |
| if (err && err != -ENODEV) { |
| pr_err("could not attach to PHY: %d\n", err); |
| goto err_phy_connect; |
| } |
| |
| return 0; |
| |
| err_phy_connect: |
| phylink_destroy(dp->pl); |
| return err; |
| } |
| |
| int dsa_port_link_register_of(struct dsa_port *dp) |
| { |
| struct dsa_switch *ds = dp->ds; |
| struct device_node *phy_np; |
| |
| if (!ds->ops->adjust_link) { |
| phy_np = of_parse_phandle(dp->dn, "phy-handle", 0); |
| if (of_phy_is_fixed_link(dp->dn) || phy_np) |
| return dsa_port_phylink_register(dp); |
| return 0; |
| } |
| |
| dev_warn(ds->dev, |
| "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n"); |
| |
| if (of_phy_is_fixed_link(dp->dn)) |
| return dsa_port_fixed_link_register_of(dp); |
| else |
| return dsa_port_setup_phy_of(dp, true); |
| } |
| |
| void dsa_port_link_unregister_of(struct dsa_port *dp) |
| { |
| struct dsa_switch *ds = dp->ds; |
| |
| if (!ds->ops->adjust_link && dp->pl) { |
| rtnl_lock(); |
| phylink_disconnect_phy(dp->pl); |
| rtnl_unlock(); |
| phylink_destroy(dp->pl); |
| dp->pl = NULL; |
| return; |
| } |
| |
| if (of_phy_is_fixed_link(dp->dn)) |
| of_phy_deregister_fixed_link(dp->dn); |
| else |
| dsa_port_setup_phy_of(dp, false); |
| } |
| |
| int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data) |
| { |
| struct phy_device *phydev; |
| int ret = -EOPNOTSUPP; |
| |
| if (of_phy_is_fixed_link(dp->dn)) |
| return ret; |
| |
| phydev = dsa_port_get_phy_device(dp); |
| if (IS_ERR_OR_NULL(phydev)) |
| return ret; |
| |
| ret = phy_ethtool_get_strings(phydev, data); |
| put_device(&phydev->mdio.dev); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(dsa_port_get_phy_strings); |
| |
| int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data) |
| { |
| struct phy_device *phydev; |
| int ret = -EOPNOTSUPP; |
| |
| if (of_phy_is_fixed_link(dp->dn)) |
| return ret; |
| |
| phydev = dsa_port_get_phy_device(dp); |
| if (IS_ERR_OR_NULL(phydev)) |
| return ret; |
| |
| ret = phy_ethtool_get_stats(phydev, NULL, data); |
| put_device(&phydev->mdio.dev); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(dsa_port_get_ethtool_phy_stats); |
| |
| int dsa_port_get_phy_sset_count(struct dsa_port *dp) |
| { |
| struct phy_device *phydev; |
| int ret = -EOPNOTSUPP; |
| |
| if (of_phy_is_fixed_link(dp->dn)) |
| return ret; |
| |
| phydev = dsa_port_get_phy_device(dp); |
| if (IS_ERR_OR_NULL(phydev)) |
| return ret; |
| |
| ret = phy_ethtool_get_sset_count(phydev); |
| put_device(&phydev->mdio.dev); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(dsa_port_get_phy_sset_count); |