/* * 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 #include #include #include #include #include #include #include #include #include #include #include #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->drv->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->drv->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:%.2x", ds->index, ds->pd->sw_addr); ds->slave_mii_bus->parent = ds->master_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 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->drv->port_enable) { err = ds->drv->port_enable(ds, p->port, p->phy); if (err) goto clear_promisc; } if (ds->drv->port_stp_update) ds->drv->port_stp_update(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->drv->port_disable) ds->drv->port_disable(ds, p->port, p->phy); if (ds->drv->port_stp_update) ds->drv->port_stp_update(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_bridge_check_vlan_range(struct dsa_switch *ds, const struct net_device *bridge, u16 vid_begin, u16 vid_end) { struct dsa_slave_priv *p; struct net_device *dev, *vlan_br; DECLARE_BITMAP(members, DSA_MAX_PORTS); DECLARE_BITMAP(untagged, DSA_MAX_PORTS); u16 vid; int member, err; if (!ds->drv->vlan_getnext || !vid_begin) return -EOPNOTSUPP; vid = vid_begin - 1; do { err = ds->drv->vlan_getnext(ds, &vid, members, untagged); if (err) break; if (vid > vid_end) break; member = find_first_bit(members, DSA_MAX_PORTS); if (member == DSA_MAX_PORTS) continue; dev = ds->ports[member]; p = netdev_priv(dev); vlan_br = p->bridge_dev; if (vlan_br == bridge) continue; netdev_dbg(vlan_br, "hardware VLAN %d already in use\n", vid); return -EOPNOTSUPP; } while (vid < vid_end); return err == -ENOENT ? 0 : err; } 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; int err; if (switchdev_trans_ph_prepare(trans)) { if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add) return -EOPNOTSUPP; /* If the requested port doesn't belong to the same bridge as * the VLAN members, fallback to software VLAN (hopefully). */ err = dsa_bridge_check_vlan_range(ds, p->bridge_dev, vlan->vid_begin, vlan->vid_end); if (err) return err; err = ds->drv->port_vlan_prepare(ds, p->port, vlan, trans); if (err) return err; } else { err = ds->drv->port_vlan_add(ds, p->port, vlan, trans); if (err) return err; } 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->drv->port_vlan_del) return -EOPNOTSUPP; return ds->drv->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; DECLARE_BITMAP(members, DSA_MAX_PORTS); DECLARE_BITMAP(untagged, DSA_MAX_PORTS); u16 pvid, vid = 0; int err; if (!ds->drv->vlan_getnext || !ds->drv->port_pvid_get) return -EOPNOTSUPP; err = ds->drv->port_pvid_get(ds, p->port, &pvid); if (err) return err; for (;;) { err = ds->drv->vlan_getnext(ds, &vid, members, untagged); if (err) break; if (!test_bit(p->port, members)) continue; memset(vlan, 0, sizeof(*vlan)); vlan->vid_begin = vlan->vid_end = vid; if (vid == pvid) vlan->flags |= BRIDGE_VLAN_INFO_PVID; if (test_bit(p->port, untagged)) vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED; err = cb(&vlan->obj); if (err) break; } return err == -ENOENT ? 0 : err; } 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; int ret; if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add) return -EOPNOTSUPP; if (switchdev_trans_ph_prepare(trans)) ret = ds->drv->port_fdb_prepare(ds, p->port, fdb, trans); else ret = ds->drv->port_fdb_add(ds, p->port, fdb, trans); return ret; } 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->drv->port_fdb_del) ret = ds->drv->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->drv->port_fdb_dump) return ds->drv->port_fdb_dump(ds, p->port, fdb, 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_update(struct net_device *dev, u8 state) { struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_switch *ds = p->parent; int ret = -EOPNOTSUPP; if (ds->drv->port_stp_update) ret = ds->drv->port_stp_update(ds, p->port, state); return ret; } static int dsa_slave_port_attr_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; int ret; switch (attr->id) { case SWITCHDEV_ATTR_ID_PORT_STP_STATE: if (switchdev_trans_ph_prepare(trans)) ret = ds->drv->port_stp_update ? 0 : -EOPNOTSUPP; else ret = ds->drv->port_stp_update(ds, p->port, attr->u.stp_state); 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_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_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_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->drv->port_join_bridge) ret = ds->drv->port_join_bridge(ds, p->port, br); return ret; } static int dsa_slave_bridge_port_leave(struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_switch *ds = p->parent; int ret = -EOPNOTSUPP; if (ds->drv->port_leave_bridge) ret = ds->drv->port_leave_bridge(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_slave_stp_update(dev, BR_STATE_FORWARDING); return ret; } 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; } static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, struct net_device *dev) { /* Just return the original SKB */ return skb; } /* 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->drv->get_regs_len) return ds->drv->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->drv->get_regs) ds->drv->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->pd->eeprom_len) return ds->pd->eeprom_len; if (ds->drv->get_eeprom_len) return ds->drv->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->drv->get_eeprom) return ds->drv->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->drv->set_eeprom) return ds->drv->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->drv->get_strings != NULL) ds->drv->get_strings(ds, p->port, data + 4 * len); } } 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] = p->dev->stats.tx_packets; data[1] = p->dev->stats.tx_bytes; data[2] = p->dev->stats.rx_packets; data[3] = p->dev->stats.rx_bytes; if (ds->drv->get_ethtool_stats != NULL) ds->drv->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->drv->get_sset_count != NULL) count += ds->drv->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->drv->get_wol) ds->drv->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->drv->set_wol) ret = ds->drv->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->drv->set_eee) return -EOPNOTSUPP; ret = ds->drv->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->drv->get_eee) return -EOPNOTSUPP; ret = ds->drv->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 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->drv->adjust_link && status_changed) ds->drv->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 = netdev_priv(dev); struct dsa_switch *ds = p->parent; if (ds->drv->fixed_link_update) ds->drv->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; phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link, p->phy_interface); return 0; } static int dsa_slave_phy_setup(struct dsa_slave_priv *p, struct net_device *slave_dev) { struct dsa_switch *ds = p->parent; struct dsa_chip_data *cd = ds->pd; struct device_node *phy_dn, *port_dn; bool phy_is_fixed = false; u32 phy_flags = 0; int mode, ret; port_dn = cd->port_dn[p->port]; 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 (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 = port_dn; } if (ds->drv->get_phy_flags) phy_flags = ds->drv->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); return ret; } } else { p->phy = of_phy_connect(slave_dev, phy_dn, dsa_slave_adjust_link, phy_flags, p->phy_interface); } } 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); 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 (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); 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, char *name) { struct net_device *master = ds->dst->master_netdev; struct net_device *slave_dev; struct dsa_slave_priv *p; int ret; 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->pd->port_dn[port]; slave_dev->vlan_features = master->vlan_features; p = netdev_priv(slave_dev); p->dev = slave_dev; p->parent = ds; p->port = port; switch (ds->dst->tag_protocol) { #ifdef CONFIG_NET_DSA_TAG_DSA case DSA_TAG_PROTO_DSA: p->xmit = dsa_netdev_ops.xmit; break; #endif #ifdef CONFIG_NET_DSA_TAG_EDSA case DSA_TAG_PROTO_EDSA: p->xmit = edsa_netdev_ops.xmit; break; #endif #ifdef CONFIG_NET_DSA_TAG_TRAILER case DSA_TAG_PROTO_TRAILER: p->xmit = trailer_netdev_ops.xmit; break; #endif #ifdef CONFIG_NET_DSA_TAG_BRCM case DSA_TAG_PROTO_BRCM: p->xmit = brcm_netdev_ops.xmit; break; #endif default: p->xmit = dsa_slave_notag_xmit; break; } p->old_pause = -1; p->old_link = -1; p->old_duplex = -1; ds->ports[port] = slave_dev; ret = register_netdev(slave_dev); if (ret) { netdev_err(master, "error %d registering interface %s\n", ret, slave_dev->name); ds->ports[port] = NULL; free_netdev(slave_dev); return ret; } 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); unregister_netdev(slave_dev); free_netdev(slave_dev); return ret; } return 0; } void dsa_slave_destroy(struct net_device *slave_dev) { struct dsa_slave_priv *p = netdev_priv(slave_dev); netif_carrier_off(slave_dev); if (p->phy) phy_disconnect(p->phy); 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_master_changed(struct net_device *dev) { struct net_device *master = netdev_master_upper_dev_get(dev); struct dsa_slave_priv *p = netdev_priv(dev); int err = 0; if (master && master->rtnl_link_ops && !strcmp(master->rtnl_link_ops->kind, "bridge")) err = dsa_slave_bridge_port_join(dev, master); else if (dsa_port_is_bridged(p)) err = dsa_slave_bridge_port_leave(dev); return err; } int dsa_slave_netdevice_event(struct notifier_block *unused, unsigned long event, void *ptr) { struct net_device *dev; int err = 0; switch (event) { case NETDEV_CHANGEUPPER: dev = netdev_notifier_info_to_dev(ptr); if (!dsa_slave_dev_check(dev)) goto out; err = dsa_slave_master_changed(dev); if (err && err != -EOPNOTSUPP) netdev_warn(dev, "failed to reflect master change\n"); break; } out: return NOTIFY_DONE; }