diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index b00f6f74f91a..6c797e322be8 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3660,7 +3660,6 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port, } mlxsw_sp_port->default_vlan = mlxsw_sp_port_vlan; - mlxsw_sp_port_switchdev_init(mlxsw_sp_port); mlxsw_sp->ports[local_port] = mlxsw_sp_port; err = register_netdev(dev); if (err) { @@ -3677,7 +3676,6 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port, err_register_netdev: mlxsw_sp->ports[local_port] = NULL; - mlxsw_sp_port_switchdev_fini(mlxsw_sp_port); mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan); err_port_vlan_create: err_port_pvid_set: @@ -3720,7 +3718,6 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port) mlxsw_core_port_clear(mlxsw_sp->core, local_port, mlxsw_sp); unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */ mlxsw_sp->ports[local_port] = NULL; - mlxsw_sp_port_switchdev_fini(mlxsw_sp_port); mlxsw_sp_port_vlan_flush(mlxsw_sp_port, true); mlxsw_sp_port_nve_fini(mlxsw_sp_port); mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index a61c1130d9e3..da6278b0caa4 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -407,8 +407,6 @@ extern const struct mlxsw_sp_sb_vals mlxsw_sp2_sb_vals; /* spectrum_switchdev.c */ int mlxsw_sp_switchdev_init(struct mlxsw_sp *mlxsw_sp); void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp); -void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port); -void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port); int mlxsw_sp_rif_fdb_op(struct mlxsw_sp *mlxsw_sp, const char *mac, u16 fid, bool adding); void diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 766f5b5f1cf5..f6ce386c3036 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1938,10 +1938,6 @@ static struct mlxsw_sp_port *mlxsw_sp_lag_rep_port(struct mlxsw_sp *mlxsw_sp, return NULL; } -static const struct switchdev_ops mlxsw_sp_port_switchdev_ops = { - .switchdev_port_attr_set = mlxsw_sp_port_attr_set, -}; - static int mlxsw_sp_bridge_8021q_port_join(struct mlxsw_sp_bridge_device *bridge_device, struct mlxsw_sp_bridge_port *bridge_port, @@ -3123,6 +3119,13 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused, struct net_device *br_dev; int err; + if (event == SWITCHDEV_PORT_ATTR_SET) { + err = switchdev_handle_port_attr_set(dev, ptr, + mlxsw_sp_port_dev_check, + mlxsw_sp_port_attr_set); + return notifier_from_errno(err); + } + /* Tunnel devices are not our uppers, so check their master instead */ br_dev = netdev_master_upper_dev_get_rcu(dev); if (!br_dev) @@ -3446,6 +3449,11 @@ static int mlxsw_sp_switchdev_blocking_event(struct notifier_block *unused, mlxsw_sp_port_dev_check, mlxsw_sp_port_obj_del); return notifier_from_errno(err); + case SWITCHDEV_PORT_ATTR_SET: + err = switchdev_handle_port_attr_set(dev, ptr, + mlxsw_sp_port_dev_check, + mlxsw_sp_port_attr_set); + return notifier_from_errno(err); } return NOTIFY_DONE; @@ -3533,11 +3541,3 @@ void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp) kfree(mlxsw_sp->bridge); } -void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port) -{ - mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops; -} - -void mlxsw_sp_port_switchdev_fini(struct mlxsw_sp_port *mlxsw_sp_port) -{ -} diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 195306d05bcd..a1d0d6e42533 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1324,10 +1324,6 @@ static int ocelot_port_obj_del(struct net_device *dev, return ret; } -static const struct switchdev_ops ocelot_port_switchdev_ops = { - .switchdev_port_attr_set = ocelot_port_attr_set, -}; - static int ocelot_port_bridge_join(struct ocelot_port *ocelot_port, struct net_device *bridge) { @@ -1582,6 +1578,28 @@ struct notifier_block ocelot_netdevice_nb __read_mostly = { }; EXPORT_SYMBOL(ocelot_netdevice_nb); +static int ocelot_switchdev_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = switchdev_notifier_info_to_dev(ptr); + int err; + + switch (event) { + case SWITCHDEV_PORT_ATTR_SET: + err = switchdev_handle_port_attr_set(dev, ptr, + ocelot_netdevice_dev_check, + ocelot_port_attr_set); + return notifier_from_errno(err); + } + + return NOTIFY_DONE; +} + +struct notifier_block ocelot_switchdev_nb __read_mostly = { + .notifier_call = ocelot_switchdev_event, +}; +EXPORT_SYMBOL(ocelot_switchdev_nb); + static int ocelot_switchdev_blocking_event(struct notifier_block *unused, unsigned long event, void *ptr) { @@ -1600,6 +1618,11 @@ static int ocelot_switchdev_blocking_event(struct notifier_block *unused, ocelot_netdevice_dev_check, ocelot_port_obj_del); return notifier_from_errno(err); + case SWITCHDEV_PORT_ATTR_SET: + err = switchdev_handle_port_attr_set(dev, ptr, + ocelot_netdevice_dev_check, + ocelot_port_attr_set); + return notifier_from_errno(err); } return NOTIFY_DONE; @@ -1633,7 +1656,6 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port, dev->netdev_ops = &ocelot_port_netdev_ops; dev->ethtool_ops = &ocelot_ethtool_ops; - dev->switchdev_ops = &ocelot_port_switchdev_ops; dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS; dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h index 086775f7b52f..ba3b3380b4d0 100644 --- a/drivers/net/ethernet/mscc/ocelot.h +++ b/drivers/net/ethernet/mscc/ocelot.h @@ -499,6 +499,7 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port, struct phy_device *phy); extern struct notifier_block ocelot_netdevice_nb; +extern struct notifier_block ocelot_switchdev_nb; extern struct notifier_block ocelot_switchdev_blocking_nb; #endif diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c index ca3ea2fbfcd0..2c1121d86edf 100644 --- a/drivers/net/ethernet/mscc/ocelot_board.c +++ b/drivers/net/ethernet/mscc/ocelot_board.c @@ -329,6 +329,7 @@ static int mscc_ocelot_probe(struct platform_device *pdev) } register_netdevice_notifier(&ocelot_netdevice_nb); + register_switchdev_notifier(&ocelot_switchdev_nb); register_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb); dev_info(&pdev->dev, "Ocelot switch probed\n"); @@ -345,6 +346,7 @@ static int mscc_ocelot_remove(struct platform_device *pdev) ocelot_deinit(ocelot); unregister_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb); + unregister_switchdev_notifier(&ocelot_switchdev_nb); unregister_netdevice_notifier(&ocelot_netdevice_nb); return 0; diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c index 309a6bf9130c..c883aa89b7ca 100644 --- a/drivers/net/ethernet/rocker/rocker_main.c +++ b/drivers/net/ethernet/rocker/rocker_main.c @@ -2142,10 +2142,6 @@ static int rocker_port_obj_del(struct net_device *dev, return err; } -static const struct switchdev_ops rocker_port_switchdev_ops = { - .switchdev_port_attr_set = rocker_port_attr_set, -}; - struct rocker_fib_event_work { struct work_struct work; union { @@ -2599,7 +2595,6 @@ static int rocker_probe_port(struct rocker *rocker, unsigned int port_number) rocker_port_dev_addr_init(rocker_port); dev->netdev_ops = &rocker_port_netdev_ops; dev->ethtool_ops = &rocker_port_ethtool_ops; - dev->switchdev_ops = &rocker_port_switchdev_ops; netif_tx_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx, NAPI_POLL_WEIGHT); netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx, @@ -2710,6 +2705,19 @@ static bool rocker_port_dev_check(const struct net_device *dev) return dev->netdev_ops == &rocker_port_netdev_ops; } +static int +rocker_switchdev_port_attr_set_event(struct net_device *netdev, + struct switchdev_notifier_port_attr_info *port_attr_info) +{ + int err; + + err = rocker_port_attr_set(netdev, port_attr_info->attr, + port_attr_info->trans); + + port_attr_info->handled = true; + return notifier_from_errno(err); +} + struct rocker_switchdev_event_work { struct work_struct work; struct switchdev_notifier_fdb_info fdb_info; @@ -2779,6 +2787,9 @@ static int rocker_switchdev_event(struct notifier_block *unused, if (!rocker_port_dev_check(dev)) return NOTIFY_DONE; + if (event == SWITCHDEV_PORT_ATTR_SET) + return rocker_switchdev_port_attr_set_event(dev, ptr); + rocker_port = netdev_priv(dev); switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); if (WARN_ON(!switchdev_work)) @@ -2841,6 +2852,8 @@ static int rocker_switchdev_blocking_event(struct notifier_block *unused, case SWITCHDEV_PORT_OBJ_ADD: case SWITCHDEV_PORT_OBJ_DEL: return rocker_switchdev_port_obj_event(event, dev, ptr); + case SWITCHDEV_PORT_ATTR_SET: + return rocker_switchdev_port_attr_set_event(dev, ptr); } return NOTIFY_DONE; diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c index 018399ee8731..ad577beeb052 100644 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c @@ -925,9 +925,18 @@ static int swdev_port_obj_del(struct net_device *netdev, return err; } -static const struct switchdev_ops ethsw_port_switchdev_ops = { - .switchdev_port_attr_set = swdev_port_attr_set, -}; +static int +ethsw_switchdev_port_attr_set_event(struct net_device *netdev, + struct switchdev_notifier_port_attr_info *port_attr_info) +{ + int err; + + err = swdev_port_attr_set(netdev, port_attr_info->attr, + port_attr_info->trans); + + port_attr_info->handled = true; + return notifier_from_errno(err); +} /* For the moment, only flood setting needs to be updated */ static int port_bridge_join(struct net_device *netdev, @@ -1047,6 +1056,12 @@ static int port_switchdev_event(struct notifier_block *unused, struct ethsw_switchdev_event_work *switchdev_work; struct switchdev_notifier_fdb_info *fdb_info = ptr; + if (!ethsw_port_dev_check(dev)) + return NOTIFY_DONE; + + if (event == SWITCHDEV_PORT_ATTR_SET) + return ethsw_switchdev_port_attr_set_event(dev, ptr); + switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); if (!switchdev_work) return NOTIFY_BAD; @@ -1115,6 +1130,8 @@ static int port_switchdev_blocking_event(struct notifier_block *unused, case SWITCHDEV_PORT_OBJ_ADD: /* fall through */ case SWITCHDEV_PORT_OBJ_DEL: return ethsw_switchdev_port_obj_event(event, dev, ptr); + case SWITCHDEV_PORT_ATTR_SET: + return ethsw_switchdev_port_attr_set_event(dev, ptr); } return NOTIFY_DONE; @@ -1434,7 +1451,6 @@ static int ethsw_probe_port(struct ethsw_core *ethsw, u16 port_idx) SET_NETDEV_DEV(port_netdev, dev); port_netdev->netdev_ops = ðsw_port_ops; port_netdev->ethtool_ops = ðsw_port_ethtool_ops; - port_netdev->switchdev_ops = ðsw_port_switchdev_ops; /* Set MTU limits */ port_netdev->min_mtu = ETH_MIN_MTU; diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 58e83bd7a861..c10b60297d28 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1843,9 +1843,6 @@ struct net_device { #endif const struct net_device_ops *netdev_ops; const struct ethtool_ops *ethtool_ops; -#ifdef CONFIG_NET_SWITCHDEV - const struct switchdev_ops *switchdev_ops; -#endif #ifdef CONFIG_NET_L3_MASTER_DEV const struct l3mdev_ops *l3mdev_ops; #endif diff --git a/include/net/switchdev.h b/include/net/switchdev.h index be4b13e66668..e4f751e19ecf 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -112,17 +112,6 @@ void *switchdev_trans_item_dequeue(struct switchdev_trans *trans); typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj); -/** - * struct switchdev_ops - switchdev operations - * - * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr). - */ -struct switchdev_ops { - int (*switchdev_port_attr_set)(struct net_device *dev, - const struct switchdev_attr *attr, - struct switchdev_trans *trans); -}; - enum switchdev_notifier_type { SWITCHDEV_FDB_ADD_TO_BRIDGE = 1, SWITCHDEV_FDB_DEL_TO_BRIDGE, @@ -132,6 +121,7 @@ enum switchdev_notifier_type { SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */ SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */ + SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */ SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE, SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE, @@ -160,6 +150,13 @@ struct switchdev_notifier_port_obj_info { bool handled; }; +struct switchdev_notifier_port_attr_info { + struct switchdev_notifier_info info; /* must be first */ + const struct switchdev_attr *attr; + struct switchdev_trans *trans; + bool handled; +}; + static inline struct net_device * switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info) { @@ -212,7 +209,12 @@ int switchdev_handle_port_obj_del(struct net_device *dev, int (*del_cb)(struct net_device *dev, const struct switchdev_obj *obj)); -#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops)) +int switchdev_handle_port_attr_set(struct net_device *dev, + struct switchdev_notifier_port_attr_info *port_attr_info, + bool (*check_cb)(const struct net_device *dev), + int (*set_cb)(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans)); #else static inline void switchdev_deferred_process(void) @@ -299,8 +301,16 @@ switchdev_handle_port_obj_del(struct net_device *dev, return 0; } -#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0) - +static inline int +switchdev_handle_port_attr_set(struct net_device *dev, + struct switchdev_notifier_port_attr_info *port_attr_info, + bool (*check_cb)(const struct net_device *dev), + int (*set_cb)(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans)) +{ + return 0; +} #endif #endif /* _LINUX_SWITCHDEV_H_ */ diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index af57c4a2b78a..921310d3cbae 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -67,12 +67,18 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p, .id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, .u.brport_flags = mask, }; + struct switchdev_notifier_port_attr_info info = { + .attr = &attr, + }; int err; if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD) return 0; - err = switchdev_port_attr_set(p->dev, &attr); + /* We run from atomic context here */ + err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev, + &info.info, NULL); + err = notifier_to_errno(err); if (err == -EOPNOTSUPP) return 0; diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 7274499293c9..1808a2cd6872 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -1118,10 +1118,6 @@ static const struct net_device_ops dsa_slave_netdev_ops = { .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid, }; -static const struct switchdev_ops dsa_slave_switchdev_ops = { - .switchdev_port_attr_set = dsa_slave_port_attr_set, -}; - static struct device_type dsa_type = { .name = "dsa", }; @@ -1382,7 +1378,6 @@ int dsa_slave_create(struct dsa_port *port) eth_hw_addr_inherit(slave_dev, master); slave_dev->priv_flags |= IFF_NO_QUEUE; slave_dev->netdev_ops = &dsa_slave_netdev_ops; - slave_dev->switchdev_ops = &dsa_slave_switchdev_ops; slave_dev->min_mtu = 0; slave_dev->max_mtu = ETH_MAX_MTU; SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); @@ -1524,6 +1519,19 @@ static int dsa_slave_netdevice_event(struct notifier_block *nb, return NOTIFY_DONE; } +static int +dsa_slave_switchdev_port_attr_set_event(struct net_device *netdev, + struct switchdev_notifier_port_attr_info *port_attr_info) +{ + int err; + + err = dsa_slave_port_attr_set(netdev, port_attr_info->attr, + port_attr_info->trans); + + port_attr_info->handled = true; + return notifier_from_errno(err); +} + struct dsa_switchdev_event_work { struct work_struct work; struct switchdev_notifier_fdb_info fdb_info; @@ -1602,6 +1610,9 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused, if (!dsa_slave_dev_check(dev)) return NOTIFY_DONE; + if (event == SWITCHDEV_PORT_ATTR_SET) + return dsa_slave_switchdev_port_attr_set_event(dev, ptr); + switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); if (!switchdev_work) return NOTIFY_BAD; @@ -1664,6 +1675,8 @@ static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused, case SWITCHDEV_PORT_OBJ_ADD: /* fall through */ case SWITCHDEV_PORT_OBJ_DEL: return dsa_slave_switchdev_port_obj_event(event, dev, ptr); + case SWITCHDEV_PORT_ATTR_SET: + return dsa_slave_switchdev_port_attr_set_event(dev, ptr); } return NOTIFY_DONE; diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c index 362413c9b389..d81cfcee9ad9 100644 --- a/net/switchdev/switchdev.c +++ b/net/switchdev/switchdev.c @@ -174,39 +174,32 @@ static int switchdev_deferred_enqueue(struct net_device *dev, return 0; } -static int __switchdev_port_attr_set(struct net_device *dev, - const struct switchdev_attr *attr, - struct switchdev_trans *trans) +static int switchdev_port_attr_notify(enum switchdev_notifier_type nt, + struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans) { - const struct switchdev_ops *ops = dev->switchdev_ops; - struct net_device *lower_dev; - struct list_head *iter; - int err = -EOPNOTSUPP; + int err; + int rc; - if (ops && ops->switchdev_port_attr_set) { - err = ops->switchdev_port_attr_set(dev, attr, trans); - goto done; + struct switchdev_notifier_port_attr_info attr_info = { + .attr = attr, + .trans = trans, + .handled = false, + }; + + rc = call_switchdev_blocking_notifiers(nt, dev, + &attr_info.info, NULL); + err = notifier_to_errno(rc); + if (err) { + WARN_ON(!attr_info.handled); + return err; } - if (attr->flags & SWITCHDEV_F_NO_RECURSE) - goto done; + if (!attr_info.handled) + return -EOPNOTSUPP; - /* Switch device port(s) may be stacked under - * bond/team/vlan dev, so recurse down to set attr on - * each port. - */ - - netdev_for_each_lower_dev(dev, lower_dev, iter) { - err = __switchdev_port_attr_set(lower_dev, attr, trans); - if (err) - break; - } - -done: - if (err == -EOPNOTSUPP && attr->flags & SWITCHDEV_F_SKIP_EOPNOTSUPP) - err = 0; - - return err; + return 0; } static int switchdev_port_attr_set_now(struct net_device *dev, @@ -225,7 +218,8 @@ static int switchdev_port_attr_set_now(struct net_device *dev, */ trans.ph_prepare = true; - err = __switchdev_port_attr_set(dev, attr, &trans); + err = switchdev_port_attr_notify(SWITCHDEV_PORT_ATTR_SET, dev, attr, + &trans); if (err) { /* Prepare phase failed: abort the transaction. Any * resources reserved in the prepare phase are @@ -244,7 +238,8 @@ static int switchdev_port_attr_set_now(struct net_device *dev, */ trans.ph_prepare = false; - err = __switchdev_port_attr_set(dev, attr, &trans); + err = switchdev_port_attr_notify(SWITCHDEV_PORT_ATTR_SET, dev, attr, + &trans); WARN(err, "%s: Commit of attribute (id=%d) failed.\n", dev->name, attr->id); switchdev_trans_items_warn_destroy(dev, &trans); @@ -655,3 +650,54 @@ int switchdev_handle_port_obj_del(struct net_device *dev, return err; } EXPORT_SYMBOL_GPL(switchdev_handle_port_obj_del); + +static int __switchdev_handle_port_attr_set(struct net_device *dev, + struct switchdev_notifier_port_attr_info *port_attr_info, + bool (*check_cb)(const struct net_device *dev), + int (*set_cb)(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans)) +{ + struct net_device *lower_dev; + struct list_head *iter; + int err = -EOPNOTSUPP; + + if (check_cb(dev)) { + port_attr_info->handled = true; + return set_cb(dev, port_attr_info->attr, + port_attr_info->trans); + } + + /* Switch ports might be stacked under e.g. a LAG. Ignore the + * unsupported devices, another driver might be able to handle them. But + * propagate to the callers any hard errors. + * + * If the driver does its own bookkeeping of stacked ports, it's not + * necessary to go through this helper. + */ + netdev_for_each_lower_dev(dev, lower_dev, iter) { + err = __switchdev_handle_port_attr_set(lower_dev, port_attr_info, + check_cb, set_cb); + if (err && err != -EOPNOTSUPP) + return err; + } + + return err; +} + +int switchdev_handle_port_attr_set(struct net_device *dev, + struct switchdev_notifier_port_attr_info *port_attr_info, + bool (*check_cb)(const struct net_device *dev), + int (*set_cb)(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans)) +{ + int err; + + err = __switchdev_handle_port_attr_set(dev, port_attr_info, check_cb, + set_cb); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +EXPORT_SYMBOL_GPL(switchdev_handle_port_attr_set);