| /* |
| * net/dsa/slave.c - Slave device handling |
| * Copyright (c) 2008-2009 Marvell Semiconductor |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/list.h> |
| #include <linux/etherdevice.h> |
| #include <linux/netdevice.h> |
| #include <linux/phy.h> |
| #include <linux/phy_fixed.h> |
| #include <linux/of_net.h> |
| #include <linux/of_mdio.h> |
| #include <linux/mdio.h> |
| #include <net/rtnetlink.h> |
| #include <net/switchdev.h> |
| #include <linux/if_bridge.h> |
| #include <linux/netpoll.h> |
| #include "dsa_priv.h" |
| |
| /* slave mii_bus handling ***************************************************/ |
| static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg) |
| { |
| struct dsa_switch *ds = bus->priv; |
| |
| if (ds->phys_mii_mask & (1 << addr)) |
| return ds->ops->phy_read(ds, addr, reg); |
| |
| return 0xffff; |
| } |
| |
| static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val) |
| { |
| struct dsa_switch *ds = bus->priv; |
| |
| if (ds->phys_mii_mask & (1 << addr)) |
| return ds->ops->phy_write(ds, addr, reg, val); |
| |
| return 0; |
| } |
| |
| void dsa_slave_mii_bus_init(struct dsa_switch *ds) |
| { |
| ds->slave_mii_bus->priv = (void *)ds; |
| ds->slave_mii_bus->name = "dsa slave smi"; |
| ds->slave_mii_bus->read = dsa_slave_phy_read; |
| ds->slave_mii_bus->write = dsa_slave_phy_write; |
| snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d", |
| ds->dst->tree, ds->index); |
| ds->slave_mii_bus->parent = ds->dev; |
| ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask; |
| } |
| |
| |
| /* slave device handling ****************************************************/ |
| static int dsa_slave_get_iflink(const struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| return p->parent->dst->master_netdev->ifindex; |
| } |
| |
| static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p) |
| { |
| return !!p->bridge_dev; |
| } |
| |
| static void dsa_port_set_stp_state(struct dsa_switch *ds, int port, u8 state) |
| { |
| struct dsa_port *dp = &ds->ports[port]; |
| |
| 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; |
| } |
| |
| static int dsa_slave_open(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = p->parent->dst->master_netdev; |
| struct dsa_switch *ds = p->parent; |
| u8 stp_state = dsa_port_is_bridged(p) ? |
| BR_STATE_BLOCKING : BR_STATE_FORWARDING; |
| int err; |
| |
| if (!(master->flags & IFF_UP)) |
| return -ENETDOWN; |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) { |
| err = dev_uc_add(master, dev->dev_addr); |
| if (err < 0) |
| goto out; |
| } |
| |
| if (dev->flags & IFF_ALLMULTI) { |
| err = dev_set_allmulti(master, 1); |
| if (err < 0) |
| goto del_unicast; |
| } |
| if (dev->flags & IFF_PROMISC) { |
| err = dev_set_promiscuity(master, 1); |
| if (err < 0) |
| goto clear_allmulti; |
| } |
| |
| if (ds->ops->port_enable) { |
| err = ds->ops->port_enable(ds, p->port, p->phy); |
| if (err) |
| goto clear_promisc; |
| } |
| |
| dsa_port_set_stp_state(ds, p->port, stp_state); |
| |
| if (p->phy) |
| phy_start(p->phy); |
| |
| return 0; |
| |
| clear_promisc: |
| if (dev->flags & IFF_PROMISC) |
| dev_set_promiscuity(master, -1); |
| clear_allmulti: |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(master, -1); |
| del_unicast: |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| out: |
| return err; |
| } |
| |
| static int dsa_slave_close(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = p->parent->dst->master_netdev; |
| struct dsa_switch *ds = p->parent; |
| |
| if (p->phy) |
| phy_stop(p->phy); |
| |
| dev_mc_unsync(master, dev); |
| dev_uc_unsync(master, dev); |
| if (dev->flags & IFF_ALLMULTI) |
| dev_set_allmulti(master, -1); |
| if (dev->flags & IFF_PROMISC) |
| dev_set_promiscuity(master, -1); |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| |
| if (ds->ops->port_disable) |
| ds->ops->port_disable(ds, p->port, p->phy); |
| |
| dsa_port_set_stp_state(ds, p->port, BR_STATE_DISABLED); |
| |
| return 0; |
| } |
| |
| static void dsa_slave_change_rx_flags(struct net_device *dev, int change) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = p->parent->dst->master_netdev; |
| |
| if (change & IFF_ALLMULTI) |
| dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1); |
| if (change & IFF_PROMISC) |
| dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1); |
| } |
| |
| static void dsa_slave_set_rx_mode(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = p->parent->dst->master_netdev; |
| |
| dev_mc_sync(master, dev); |
| dev_uc_sync(master, dev); |
| } |
| |
| static int dsa_slave_set_mac_address(struct net_device *dev, void *a) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct net_device *master = p->parent->dst->master_netdev; |
| struct sockaddr *addr = a; |
| int err; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| if (!(dev->flags & IFF_UP)) |
| goto out; |
| |
| if (!ether_addr_equal(addr->sa_data, master->dev_addr)) { |
| err = dev_uc_add(master, addr->sa_data); |
| if (err < 0) |
| return err; |
| } |
| |
| if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) |
| dev_uc_del(master, dev->dev_addr); |
| |
| out: |
| ether_addr_copy(dev->dev_addr, addr->sa_data); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_port_vlan_add(struct net_device *dev, |
| const struct switchdev_obj_port_vlan *vlan, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (switchdev_trans_ph_prepare(trans)) { |
| if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->port_vlan_prepare(ds, p->port, vlan, trans); |
| } |
| |
| ds->ops->port_vlan_add(ds, p->port, vlan, trans); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_port_vlan_del(struct net_device *dev, |
| const struct switchdev_obj_port_vlan *vlan) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (!ds->ops->port_vlan_del) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->port_vlan_del(ds, p->port, vlan); |
| } |
| |
| static int dsa_slave_port_vlan_dump(struct net_device *dev, |
| struct switchdev_obj_port_vlan *vlan, |
| switchdev_obj_dump_cb_t *cb) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->port_vlan_dump) |
| return ds->ops->port_vlan_dump(ds, p->port, vlan, cb); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_port_fdb_add(struct net_device *dev, |
| const struct switchdev_obj_port_fdb *fdb, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (switchdev_trans_ph_prepare(trans)) { |
| if (!ds->ops->port_fdb_prepare || !ds->ops->port_fdb_add) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->port_fdb_prepare(ds, p->port, fdb, trans); |
| } |
| |
| ds->ops->port_fdb_add(ds, p->port, fdb, trans); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_port_fdb_del(struct net_device *dev, |
| const struct switchdev_obj_port_fdb *fdb) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret = -EOPNOTSUPP; |
| |
| if (ds->ops->port_fdb_del) |
| ret = ds->ops->port_fdb_del(ds, p->port, fdb); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_port_fdb_dump(struct net_device *dev, |
| struct switchdev_obj_port_fdb *fdb, |
| switchdev_obj_dump_cb_t *cb) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->port_fdb_dump) |
| return ds->ops->port_fdb_dump(ds, p->port, fdb, cb); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_port_mdb_add(struct net_device *dev, |
| const struct switchdev_obj_port_mdb *mdb, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (switchdev_trans_ph_prepare(trans)) { |
| if (!ds->ops->port_mdb_prepare || !ds->ops->port_mdb_add) |
| return -EOPNOTSUPP; |
| |
| return ds->ops->port_mdb_prepare(ds, p->port, mdb, trans); |
| } |
| |
| ds->ops->port_mdb_add(ds, p->port, mdb, trans); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_port_mdb_del(struct net_device *dev, |
| const struct switchdev_obj_port_mdb *mdb) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->port_mdb_del) |
| return ds->ops->port_mdb_del(ds, p->port, mdb); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_port_mdb_dump(struct net_device *dev, |
| struct switchdev_obj_port_mdb *mdb, |
| switchdev_obj_dump_cb_t *cb) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->port_mdb_dump) |
| return ds->ops->port_mdb_dump(ds, p->port, mdb, cb); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return phy_mii_ioctl(p->phy, ifr, cmd); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_stp_state_set(struct net_device *dev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (switchdev_trans_ph_prepare(trans)) |
| return ds->ops->port_stp_state_set ? 0 : -EOPNOTSUPP; |
| |
| dsa_port_set_stp_state(ds, p->port, attr->u.stp_state); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_vlan_filtering(struct net_device *dev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| /* 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, p->port, |
| attr->u.vlan_filtering); |
| |
| return 0; |
| } |
| |
| static int dsa_fastest_ageing_time(struct dsa_switch *ds, |
| unsigned int ageing_time) |
| { |
| int i; |
| |
| for (i = 0; i < DSA_MAX_PORTS; ++i) { |
| struct dsa_port *dp = &ds->ports[i]; |
| |
| if (dp && dp->ageing_time && dp->ageing_time < ageing_time) |
| ageing_time = dp->ageing_time; |
| } |
| |
| return ageing_time; |
| } |
| |
| static int dsa_slave_ageing_time(struct net_device *dev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| unsigned long ageing_jiffies = clock_t_to_jiffies(attr->u.ageing_time); |
| unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies); |
| |
| /* bridge skips -EOPNOTSUPP, so skip the prepare phase */ |
| if (switchdev_trans_ph_prepare(trans)) |
| return 0; |
| |
| /* Keep the fastest ageing time in case of multiple bridges */ |
| ds->ports[p->port].ageing_time = ageing_time; |
| ageing_time = dsa_fastest_ageing_time(ds, ageing_time); |
| |
| if (ds->ops->set_ageing_time) |
| return ds->ops->set_ageing_time(ds, ageing_time); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_port_attr_set(struct net_device *dev, |
| const struct switchdev_attr *attr, |
| struct switchdev_trans *trans) |
| { |
| int ret; |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_STP_STATE: |
| ret = dsa_slave_stp_state_set(dev, attr, trans); |
| break; |
| case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: |
| ret = dsa_slave_vlan_filtering(dev, attr, trans); |
| break; |
| case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: |
| ret = dsa_slave_ageing_time(dev, attr, trans); |
| break; |
| default: |
| ret = -EOPNOTSUPP; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static int dsa_slave_port_obj_add(struct net_device *dev, |
| const struct switchdev_obj *obj, |
| struct switchdev_trans *trans) |
| { |
| int err; |
| |
| /* For the prepare phase, ensure the full set of changes is feasable in |
| * one go in order to signal a failure properly. If an operation is not |
| * supported, return -EOPNOTSUPP. |
| */ |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_FDB: |
| err = dsa_slave_port_fdb_add(dev, |
| SWITCHDEV_OBJ_PORT_FDB(obj), |
| trans); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = dsa_slave_port_mdb_add(dev, SWITCHDEV_OBJ_PORT_MDB(obj), |
| trans); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = dsa_slave_port_vlan_add(dev, |
| SWITCHDEV_OBJ_PORT_VLAN(obj), |
| trans); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_port_obj_del(struct net_device *dev, |
| const struct switchdev_obj *obj) |
| { |
| int err; |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_FDB: |
| err = dsa_slave_port_fdb_del(dev, |
| SWITCHDEV_OBJ_PORT_FDB(obj)); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = dsa_slave_port_mdb_del(dev, SWITCHDEV_OBJ_PORT_MDB(obj)); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = dsa_slave_port_vlan_del(dev, |
| SWITCHDEV_OBJ_PORT_VLAN(obj)); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_port_obj_dump(struct net_device *dev, |
| struct switchdev_obj *obj, |
| switchdev_obj_dump_cb_t *cb) |
| { |
| int err; |
| |
| switch (obj->id) { |
| case SWITCHDEV_OBJ_ID_PORT_FDB: |
| err = dsa_slave_port_fdb_dump(dev, |
| SWITCHDEV_OBJ_PORT_FDB(obj), |
| cb); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_MDB: |
| err = dsa_slave_port_mdb_dump(dev, SWITCHDEV_OBJ_PORT_MDB(obj), |
| cb); |
| break; |
| case SWITCHDEV_OBJ_ID_PORT_VLAN: |
| err = dsa_slave_port_vlan_dump(dev, |
| SWITCHDEV_OBJ_PORT_VLAN(obj), |
| cb); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| break; |
| } |
| |
| return err; |
| } |
| |
| static int dsa_slave_bridge_port_join(struct net_device *dev, |
| struct net_device *br) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret = -EOPNOTSUPP; |
| |
| p->bridge_dev = br; |
| |
| if (ds->ops->port_bridge_join) |
| ret = ds->ops->port_bridge_join(ds, p->port, br); |
| |
| return ret == -EOPNOTSUPP ? 0 : ret; |
| } |
| |
| static void dsa_slave_bridge_port_leave(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| |
| if (ds->ops->port_bridge_leave) |
| ds->ops->port_bridge_leave(ds, p->port); |
| |
| p->bridge_dev = 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_stp_state(ds, p->port, BR_STATE_FORWARDING); |
| } |
| |
| static int dsa_slave_port_attr_get(struct net_device *dev, |
| struct switchdev_attr *attr) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| switch (attr->id) { |
| case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: |
| attr->u.ppid.id_len = sizeof(ds->index); |
| memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len); |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p, |
| struct sk_buff *skb) |
| { |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| if (p->netpoll) |
| netpoll_send_skb(p->netpoll, skb); |
| #else |
| BUG(); |
| #endif |
| return NETDEV_TX_OK; |
| } |
| |
| static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct sk_buff *nskb; |
| |
| dev->stats.tx_packets++; |
| dev->stats.tx_bytes += skb->len; |
| |
| /* Transmit function may have to reallocate the original SKB */ |
| nskb = p->xmit(skb, dev); |
| if (!nskb) |
| return NETDEV_TX_OK; |
| |
| /* SKB for netpoll still need to be mangled with the protocol-specific |
| * tag to be successfully transmitted |
| */ |
| if (unlikely(netpoll_tx_running(dev))) |
| return dsa_netpoll_send_skb(p, nskb); |
| |
| /* Queue the SKB for transmission on the parent interface, but |
| * do not modify its EtherType |
| */ |
| nskb->dev = p->parent->dst->master_netdev; |
| dev_queue_xmit(nskb); |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /* ethtool operations *******************************************************/ |
| static int |
| dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| int err; |
| |
| err = -EOPNOTSUPP; |
| if (p->phy != NULL) { |
| err = phy_read_status(p->phy); |
| if (err == 0) |
| err = phy_ethtool_gset(p->phy, cmd); |
| } |
| |
| return err; |
| } |
| |
| static int |
| dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return phy_ethtool_sset(p->phy, cmd); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *drvinfo) |
| { |
| strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver)); |
| strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version)); |
| strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version)); |
| strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); |
| } |
| |
| static int dsa_slave_get_regs_len(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->get_regs_len) |
| return ds->ops->get_regs_len(ds, p->port); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void |
| dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->get_regs) |
| ds->ops->get_regs(ds, p->port, regs, _p); |
| } |
| |
| static int dsa_slave_nway_reset(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) |
| return genphy_restart_aneg(p->phy); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static u32 dsa_slave_get_link(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| if (p->phy != NULL) { |
| genphy_update_link(p->phy); |
| return p->phy->link; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_get_eeprom_len(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->cd && ds->cd->eeprom_len) |
| return ds->cd->eeprom_len; |
| |
| if (ds->ops->get_eeprom_len) |
| return ds->ops->get_eeprom_len(ds); |
| |
| return 0; |
| } |
| |
| static int dsa_slave_get_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->get_eeprom) |
| return ds->ops->get_eeprom(ds, eeprom, data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static int dsa_slave_set_eeprom(struct net_device *dev, |
| struct ethtool_eeprom *eeprom, u8 *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->set_eeprom) |
| return ds->ops->set_eeprom(ds, eeprom, data); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_strings(struct net_device *dev, |
| uint32_t stringset, uint8_t *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (stringset == ETH_SS_STATS) { |
| int len = ETH_GSTRING_LEN; |
| |
| strncpy(data, "tx_packets", len); |
| strncpy(data + len, "tx_bytes", len); |
| strncpy(data + 2 * len, "rx_packets", len); |
| strncpy(data + 3 * len, "rx_bytes", len); |
| if (ds->ops->get_strings) |
| ds->ops->get_strings(ds, p->port, data + 4 * len); |
| } |
| } |
| |
| static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev, |
| struct ethtool_stats *stats, |
| uint64_t *data) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_switch *ds = dst->ds[0]; |
| s8 cpu_port = dst->cpu_port; |
| int count = 0; |
| |
| if (dst->master_ethtool_ops.get_sset_count) { |
| count = dst->master_ethtool_ops.get_sset_count(dev, |
| ETH_SS_STATS); |
| dst->master_ethtool_ops.get_ethtool_stats(dev, stats, data); |
| } |
| |
| if (ds->ops->get_ethtool_stats) |
| ds->ops->get_ethtool_stats(ds, cpu_port, data + count); |
| } |
| |
| static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_switch *ds = dst->ds[0]; |
| int count = 0; |
| |
| if (dst->master_ethtool_ops.get_sset_count) |
| count += dst->master_ethtool_ops.get_sset_count(dev, sset); |
| |
| if (sset == ETH_SS_STATS && ds->ops->get_sset_count) |
| count += ds->ops->get_sset_count(ds); |
| |
| return count; |
| } |
| |
| static void dsa_cpu_port_get_strings(struct net_device *dev, |
| uint32_t stringset, uint8_t *data) |
| { |
| struct dsa_switch_tree *dst = dev->dsa_ptr; |
| struct dsa_switch *ds = dst->ds[0]; |
| s8 cpu_port = dst->cpu_port; |
| int len = ETH_GSTRING_LEN; |
| int mcount = 0, count; |
| unsigned int i; |
| uint8_t pfx[4]; |
| uint8_t *ndata; |
| |
| snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port); |
| /* We do not want to be NULL-terminated, since this is a prefix */ |
| pfx[sizeof(pfx) - 1] = '_'; |
| |
| if (dst->master_ethtool_ops.get_sset_count) { |
| mcount = dst->master_ethtool_ops.get_sset_count(dev, |
| ETH_SS_STATS); |
| dst->master_ethtool_ops.get_strings(dev, stringset, data); |
| } |
| |
| if (stringset == ETH_SS_STATS && ds->ops->get_strings) { |
| ndata = data + mcount * len; |
| /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle |
| * the output after to prepend our CPU port prefix we |
| * constructed earlier |
| */ |
| ds->ops->get_strings(ds, cpu_port, ndata); |
| count = ds->ops->get_sset_count(ds); |
| for (i = 0; i < count; i++) { |
| memmove(ndata + (i * len + sizeof(pfx)), |
| ndata + i * len, len - sizeof(pfx)); |
| memcpy(ndata + i * len, pfx, sizeof(pfx)); |
| } |
| } |
| } |
| |
| static void dsa_slave_get_ethtool_stats(struct net_device *dev, |
| struct ethtool_stats *stats, |
| uint64_t *data) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| data[0] = dev->stats.tx_packets; |
| data[1] = dev->stats.tx_bytes; |
| data[2] = dev->stats.rx_packets; |
| data[3] = dev->stats.rx_bytes; |
| if (ds->ops->get_ethtool_stats) |
| ds->ops->get_ethtool_stats(ds, p->port, data + 4); |
| } |
| |
| static int dsa_slave_get_sset_count(struct net_device *dev, int sset) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (sset == ETH_SS_STATS) { |
| int count; |
| |
| count = 4; |
| if (ds->ops->get_sset_count) |
| count += ds->ops->get_sset_count(ds); |
| |
| return count; |
| } |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| if (ds->ops->get_wol) |
| ds->ops->get_wol(ds, p->port, w); |
| } |
| |
| static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret = -EOPNOTSUPP; |
| |
| if (ds->ops->set_wol) |
| ret = ds->ops->set_wol(ds, p->port, w); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret; |
| |
| if (!ds->ops->set_eee) |
| return -EOPNOTSUPP; |
| |
| ret = ds->ops->set_eee(ds, p->port, p->phy, e); |
| if (ret) |
| return ret; |
| |
| if (p->phy) |
| ret = phy_ethtool_set_eee(p->phy, e); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret; |
| |
| if (!ds->ops->get_eee) |
| return -EOPNOTSUPP; |
| |
| ret = ds->ops->get_eee(ds, p->port, e); |
| if (ret) |
| return ret; |
| |
| if (p->phy) |
| ret = phy_ethtool_get_eee(p->phy, e); |
| |
| return ret; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static int dsa_slave_netpoll_setup(struct net_device *dev, |
| struct netpoll_info *ni) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| struct net_device *master = ds->dst->master_netdev; |
| struct netpoll *netpoll; |
| int err = 0; |
| |
| netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); |
| if (!netpoll) |
| return -ENOMEM; |
| |
| err = __netpoll_setup(netpoll, master); |
| if (err) { |
| kfree(netpoll); |
| goto out; |
| } |
| |
| p->netpoll = netpoll; |
| out: |
| return err; |
| } |
| |
| static void dsa_slave_netpoll_cleanup(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct netpoll *netpoll = p->netpoll; |
| |
| if (!netpoll) |
| return; |
| |
| p->netpoll = NULL; |
| |
| __netpoll_free_async(netpoll); |
| } |
| |
| static void dsa_slave_poll_controller(struct net_device *dev) |
| { |
| } |
| #endif |
| |
| void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops) |
| { |
| ops->get_sset_count = dsa_cpu_port_get_sset_count; |
| ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats; |
| ops->get_strings = dsa_cpu_port_get_strings; |
| } |
| |
| static const struct ethtool_ops dsa_slave_ethtool_ops = { |
| .get_settings = dsa_slave_get_settings, |
| .set_settings = dsa_slave_set_settings, |
| .get_drvinfo = dsa_slave_get_drvinfo, |
| .get_regs_len = dsa_slave_get_regs_len, |
| .get_regs = dsa_slave_get_regs, |
| .nway_reset = dsa_slave_nway_reset, |
| .get_link = dsa_slave_get_link, |
| .get_eeprom_len = dsa_slave_get_eeprom_len, |
| .get_eeprom = dsa_slave_get_eeprom, |
| .set_eeprom = dsa_slave_set_eeprom, |
| .get_strings = dsa_slave_get_strings, |
| .get_ethtool_stats = dsa_slave_get_ethtool_stats, |
| .get_sset_count = dsa_slave_get_sset_count, |
| .set_wol = dsa_slave_set_wol, |
| .get_wol = dsa_slave_get_wol, |
| .set_eee = dsa_slave_set_eee, |
| .get_eee = dsa_slave_get_eee, |
| }; |
| |
| static const struct net_device_ops dsa_slave_netdev_ops = { |
| .ndo_open = dsa_slave_open, |
| .ndo_stop = dsa_slave_close, |
| .ndo_start_xmit = dsa_slave_xmit, |
| .ndo_change_rx_flags = dsa_slave_change_rx_flags, |
| .ndo_set_rx_mode = dsa_slave_set_rx_mode, |
| .ndo_set_mac_address = dsa_slave_set_mac_address, |
| .ndo_fdb_add = switchdev_port_fdb_add, |
| .ndo_fdb_del = switchdev_port_fdb_del, |
| .ndo_fdb_dump = switchdev_port_fdb_dump, |
| .ndo_do_ioctl = dsa_slave_ioctl, |
| .ndo_get_iflink = dsa_slave_get_iflink, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_netpoll_setup = dsa_slave_netpoll_setup, |
| .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup, |
| .ndo_poll_controller = dsa_slave_poll_controller, |
| #endif |
| .ndo_bridge_getlink = switchdev_port_bridge_getlink, |
| .ndo_bridge_setlink = switchdev_port_bridge_setlink, |
| .ndo_bridge_dellink = switchdev_port_bridge_dellink, |
| }; |
| |
| static const struct switchdev_ops dsa_slave_switchdev_ops = { |
| .switchdev_port_attr_get = dsa_slave_port_attr_get, |
| .switchdev_port_attr_set = dsa_slave_port_attr_set, |
| .switchdev_port_obj_add = dsa_slave_port_obj_add, |
| .switchdev_port_obj_del = dsa_slave_port_obj_del, |
| .switchdev_port_obj_dump = dsa_slave_port_obj_dump, |
| }; |
| |
| static struct device_type dsa_type = { |
| .name = "dsa", |
| }; |
| |
| static void dsa_slave_adjust_link(struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| unsigned int status_changed = 0; |
| |
| if (p->old_link != p->phy->link) { |
| status_changed = 1; |
| p->old_link = p->phy->link; |
| } |
| |
| if (p->old_duplex != p->phy->duplex) { |
| status_changed = 1; |
| p->old_duplex = p->phy->duplex; |
| } |
| |
| if (p->old_pause != p->phy->pause) { |
| status_changed = 1; |
| p->old_pause = p->phy->pause; |
| } |
| |
| if (ds->ops->adjust_link && status_changed) |
| ds->ops->adjust_link(ds, p->port, p->phy); |
| |
| if (status_changed) |
| phy_print_status(p->phy); |
| } |
| |
| static int dsa_slave_fixed_link_update(struct net_device *dev, |
| struct fixed_phy_status *status) |
| { |
| struct dsa_slave_priv *p; |
| struct dsa_switch *ds; |
| |
| if (dev) { |
| p = netdev_priv(dev); |
| ds = p->parent; |
| if (ds->ops->fixed_link_update) |
| ds->ops->fixed_link_update(ds, p->port, status); |
| } |
| |
| return 0; |
| } |
| |
| /* slave device setup *******************************************************/ |
| static int dsa_slave_phy_connect(struct dsa_slave_priv *p, |
| struct net_device *slave_dev, |
| int addr) |
| { |
| struct dsa_switch *ds = p->parent; |
| |
| p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr); |
| if (!p->phy) { |
| netdev_err(slave_dev, "no phy at %d\n", addr); |
| return -ENODEV; |
| } |
| |
| /* Use already configured phy mode */ |
| if (p->phy_interface == PHY_INTERFACE_MODE_NA) |
| p->phy_interface = p->phy->interface; |
| return phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, |
| p->phy_interface); |
| } |
| |
| static int dsa_slave_phy_setup(struct dsa_slave_priv *p, |
| struct net_device *slave_dev) |
| { |
| struct dsa_switch *ds = p->parent; |
| struct device_node *phy_dn, *port_dn; |
| bool phy_is_fixed = false; |
| u32 phy_flags = 0; |
| int mode, ret; |
| |
| port_dn = ds->ports[p->port].dn; |
| mode = of_get_phy_mode(port_dn); |
| if (mode < 0) |
| mode = PHY_INTERFACE_MODE_NA; |
| p->phy_interface = mode; |
| |
| phy_dn = of_parse_phandle(port_dn, "phy-handle", 0); |
| if (!phy_dn && of_phy_is_fixed_link(port_dn)) { |
| /* In the case of a fixed PHY, the DT node associated |
| * to the fixed PHY is the Port DT node |
| */ |
| ret = of_phy_register_fixed_link(port_dn); |
| if (ret) { |
| netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret); |
| return ret; |
| } |
| phy_is_fixed = true; |
| phy_dn = of_node_get(port_dn); |
| } |
| |
| if (ds->ops->get_phy_flags) |
| phy_flags = ds->ops->get_phy_flags(ds, p->port); |
| |
| if (phy_dn) { |
| int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn); |
| |
| /* If this PHY address is part of phys_mii_mask, which means |
| * that we need to divert reads and writes to/from it, then we |
| * want to bind this device using the slave MII bus created by |
| * DSA to make that happen. |
| */ |
| if (!phy_is_fixed && phy_id >= 0 && |
| (ds->phys_mii_mask & (1 << phy_id))) { |
| ret = dsa_slave_phy_connect(p, slave_dev, phy_id); |
| if (ret) { |
| netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret); |
| of_node_put(phy_dn); |
| return ret; |
| } |
| } else { |
| p->phy = of_phy_connect(slave_dev, phy_dn, |
| dsa_slave_adjust_link, |
| phy_flags, |
| p->phy_interface); |
| } |
| |
| of_node_put(phy_dn); |
| } |
| |
| if (p->phy && phy_is_fixed) |
| fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update); |
| |
| /* We could not connect to a designated PHY, so use the switch internal |
| * MDIO bus instead |
| */ |
| if (!p->phy) { |
| ret = dsa_slave_phy_connect(p, slave_dev, p->port); |
| if (ret) { |
| netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret); |
| if (phy_is_fixed) |
| of_phy_deregister_fixed_link(port_dn); |
| return ret; |
| } |
| } |
| |
| phy_attached_info(p->phy); |
| |
| return 0; |
| } |
| |
| static struct lock_class_key dsa_slave_netdev_xmit_lock_key; |
| static void dsa_slave_set_lockdep_class_one(struct net_device *dev, |
| struct netdev_queue *txq, |
| void *_unused) |
| { |
| lockdep_set_class(&txq->_xmit_lock, |
| &dsa_slave_netdev_xmit_lock_key); |
| } |
| |
| int dsa_slave_suspend(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| |
| if (!netif_running(slave_dev)) |
| return 0; |
| |
| netif_device_detach(slave_dev); |
| |
| if (p->phy) { |
| phy_stop(p->phy); |
| p->old_pause = -1; |
| p->old_link = -1; |
| p->old_duplex = -1; |
| phy_suspend(p->phy); |
| } |
| |
| return 0; |
| } |
| |
| int dsa_slave_resume(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| |
| if (!netif_running(slave_dev)) |
| return 0; |
| |
| netif_device_attach(slave_dev); |
| |
| if (p->phy) { |
| phy_resume(p->phy); |
| phy_start(p->phy); |
| } |
| |
| return 0; |
| } |
| |
| int dsa_slave_create(struct dsa_switch *ds, struct device *parent, |
| int port, const char *name) |
| { |
| struct dsa_switch_tree *dst = ds->dst; |
| struct net_device *master; |
| struct net_device *slave_dev; |
| struct dsa_slave_priv *p; |
| int ret; |
| |
| master = ds->dst->master_netdev; |
| if (ds->master_netdev) |
| master = ds->master_netdev; |
| |
| slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, |
| NET_NAME_UNKNOWN, ether_setup); |
| if (slave_dev == NULL) |
| return -ENOMEM; |
| |
| slave_dev->features = master->vlan_features; |
| slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; |
| 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; |
| SET_NETDEV_DEVTYPE(slave_dev, &dsa_type); |
| |
| netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one, |
| NULL); |
| |
| SET_NETDEV_DEV(slave_dev, parent); |
| slave_dev->dev.of_node = ds->ports[port].dn; |
| slave_dev->vlan_features = master->vlan_features; |
| |
| p = netdev_priv(slave_dev); |
| p->parent = ds; |
| p->port = port; |
| p->xmit = dst->tag_ops->xmit; |
| |
| p->old_pause = -1; |
| p->old_link = -1; |
| p->old_duplex = -1; |
| |
| ds->ports[port].netdev = slave_dev; |
| |
| netif_carrier_off(slave_dev); |
| |
| ret = dsa_slave_phy_setup(p, slave_dev); |
| if (ret) { |
| netdev_err(master, "error %d setting up slave phy\n", ret); |
| goto out_free; |
| } |
| |
| ret = register_netdev(slave_dev); |
| if (ret) { |
| netdev_err(master, "error %d registering interface %s\n", |
| ret, slave_dev->name); |
| goto out_phy; |
| } |
| |
| return 0; |
| |
| out_phy: |
| phy_disconnect(p->phy); |
| if (of_phy_is_fixed_link(ds->ports[port].dn)) |
| of_phy_deregister_fixed_link(ds->ports[port].dn); |
| out_free: |
| free_netdev(slave_dev); |
| ds->ports[port].netdev = NULL; |
| return ret; |
| } |
| |
| void dsa_slave_destroy(struct net_device *slave_dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(slave_dev); |
| struct dsa_switch *ds = p->parent; |
| struct device_node *port_dn; |
| |
| port_dn = ds->ports[p->port].dn; |
| |
| netif_carrier_off(slave_dev); |
| if (p->phy) { |
| phy_disconnect(p->phy); |
| |
| if (of_phy_is_fixed_link(port_dn)) |
| of_phy_deregister_fixed_link(port_dn); |
| } |
| unregister_netdev(slave_dev); |
| free_netdev(slave_dev); |
| } |
| |
| static bool dsa_slave_dev_check(struct net_device *dev) |
| { |
| return dev->netdev_ops == &dsa_slave_netdev_ops; |
| } |
| |
| static int dsa_slave_port_upper_event(struct net_device *dev, |
| unsigned long event, void *ptr) |
| { |
| struct netdev_notifier_changeupper_info *info = ptr; |
| struct net_device *upper = info->upper_dev; |
| int err = 0; |
| |
| switch (event) { |
| case NETDEV_CHANGEUPPER: |
| if (netif_is_bridge_master(upper)) { |
| if (info->linking) |
| err = dsa_slave_bridge_port_join(dev, upper); |
| else |
| dsa_slave_bridge_port_leave(dev); |
| } |
| |
| break; |
| } |
| |
| return notifier_from_errno(err); |
| } |
| |
| static int dsa_slave_port_event(struct net_device *dev, unsigned long event, |
| void *ptr) |
| { |
| switch (event) { |
| case NETDEV_CHANGEUPPER: |
| return dsa_slave_port_upper_event(dev, event, ptr); |
| } |
| |
| return NOTIFY_DONE; |
| } |
| |
| int dsa_slave_netdevice_event(struct notifier_block *unused, |
| unsigned long event, void *ptr) |
| { |
| struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
| |
| if (dsa_slave_dev_check(dev)) |
| return dsa_slave_port_event(dev, event, ptr); |
| |
| return NOTIFY_DONE; |
| } |