--- zzzz-none-000/linux-3.10.107/net/dsa/slave.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/net/dsa/slave.c 2021-02-04 17:41:59.000000000 +0000 @@ -9,9 +9,16 @@ */ #include -#include #include +#include #include +#include +#include +#include +#include +#include +#include +#include #include "dsa_priv.h" /* slave mii_bus handling ***************************************************/ @@ -19,7 +26,7 @@ { struct dsa_switch *ds = bus->priv; - if (ds->phys_port_mask & (1 << addr)) + if (ds->phys_mii_mask & (1 << addr)) return ds->drv->phy_read(ds, addr, reg); return 0xffff; @@ -29,7 +36,7 @@ { struct dsa_switch *ds = bus->priv; - if (ds->phys_port_mask & (1 << addr)) + if (ds->phys_mii_mask & (1 << addr)) return ds->drv->phy_write(ds, addr, reg, val); return 0; @@ -43,24 +50,31 @@ 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_mii_bus->dev; + 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_init(struct net_device *dev) +static int dsa_slave_get_iflink(const struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); - dev->iflink = p->parent->dst->master_netdev->ifindex; + return p->parent->dst->master_netdev->ifindex; +} - return 0; +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)) @@ -83,8 +97,23 @@ 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); @@ -99,6 +128,10 @@ { 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); @@ -110,6 +143,12 @@ 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; } @@ -156,11 +195,185 @@ dev_uc_del(master, dev->dev_addr); out: - memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); + 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); @@ -171,6 +384,246 @@ return -EOPNOTSUPP; } +/* Return a bitmask of all ports being currently bridged within a given bridge + * device. Note that on leave, the mask will still return the bitmask of ports + * currently bridged, prior to port removal, and this is exactly what we want. + */ +static u32 dsa_slave_br_port_mask(struct dsa_switch *ds, + struct net_device *bridge) +{ + struct dsa_slave_priv *p; + unsigned int port; + u32 mask = 0; + + for (port = 0; port < DSA_MAX_PORTS; port++) { + if (!dsa_is_port_initialized(ds, port)) + continue; + + p = netdev_priv(ds->ports[port]); + + if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT && + p->bridge_dev == bridge) + mask |= 1 << port; + } + + return mask; +} + +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, + dsa_slave_br_port_mask(ds, 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, + dsa_slave_br_port_mask(ds, p->bridge_dev)); + + 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 @@ -209,6 +662,27 @@ 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); @@ -231,6 +705,44 @@ 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) { @@ -282,123 +794,465 @@ 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, }; -#ifdef CONFIG_NET_DSA_TAG_DSA -static const struct net_device_ops dsa_netdev_ops = { - .ndo_init = dsa_slave_init, +static const struct net_device_ops dsa_slave_netdev_ops = { .ndo_open = dsa_slave_open, .ndo_stop = dsa_slave_close, - .ndo_start_xmit = dsa_xmit, + .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 -#ifdef CONFIG_NET_DSA_TAG_EDSA -static const struct net_device_ops edsa_netdev_ops = { - .ndo_init = dsa_slave_init, - .ndo_open = dsa_slave_open, - .ndo_stop = dsa_slave_close, - .ndo_start_xmit = edsa_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_do_ioctl = dsa_slave_ioctl, + .ndo_bridge_getlink = switchdev_port_bridge_getlink, + .ndo_bridge_setlink = switchdev_port_bridge_setlink, + .ndo_bridge_dellink = switchdev_port_bridge_dellink, }; -#endif -#ifdef CONFIG_NET_DSA_TAG_TRAILER -static const struct net_device_ops trailer_netdev_ops = { - .ndo_init = dsa_slave_init, - .ndo_open = dsa_slave_open, - .ndo_stop = dsa_slave_close, - .ndo_start_xmit = trailer_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_do_ioctl = dsa_slave_ioctl, + +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, }; -#endif + +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 *******************************************************/ -struct net_device * -dsa_slave_create(struct dsa_switch *ds, struct device *parent, - int port, char *name) +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 = ds->slave_mii_bus->phy_map[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; + } + } else { + netdev_info(slave_dev, "attached PHY at address %d [%s]\n", + p->phy->addr, p->phy->drv->name); + } + + 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); + + 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); + + 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, ether_setup); + slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name, + NET_NAME_UNKNOWN, ether_setup); if (slave_dev == NULL) - return slave_dev; + return -ENOMEM; slave_dev->features = master->vlan_features; - SET_ETHTOOL_OPS(slave_dev, &dsa_slave_ethtool_ops); - memcpy(slave_dev->dev_addr, master->dev_addr, ETH_ALEN); - slave_dev->tx_queue_len = 0; + 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 htons(ETH_P_DSA): - slave_dev->netdev_ops = &dsa_netdev_ops; + case DSA_TAG_PROTO_DSA: + p->xmit = dsa_netdev_ops.xmit; break; #endif #ifdef CONFIG_NET_DSA_TAG_EDSA - case htons(ETH_P_EDSA): - slave_dev->netdev_ops = &edsa_netdev_ops; + case DSA_TAG_PROTO_EDSA: + p->xmit = edsa_netdev_ops.xmit; break; #endif #ifdef CONFIG_NET_DSA_TAG_TRAILER - case htons(ETH_P_TRAILER): - slave_dev->netdev_ops = &trailer_netdev_ops; + 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: - BUG(); + p->xmit = dsa_slave_notag_xmit; + break; } - SET_NETDEV_DEV(slave_dev, parent); - slave_dev->vlan_features = master->vlan_features; + p->old_pause = -1; + p->old_link = -1; + p->old_duplex = -1; - p = netdev_priv(slave_dev); - p->dev = slave_dev; - p->parent = ds; - p->port = port; - p->phy = ds->slave_mii_bus->phy_map[port]; + ret = dsa_slave_phy_setup(p, slave_dev); + if (ret) { + netdev_err(master, "error %d setting up slave phy\n", ret); + free_netdev(slave_dev); + return ret; + } + ds->ports[port] = slave_dev; ret = register_netdev(slave_dev); if (ret) { - printk(KERN_ERR "%s: error %d registering interface %s\n", - master->name, ret, slave_dev->name); + netdev_err(master, "error %d registering interface %s\n", + ret, slave_dev->name); + phy_disconnect(p->phy); + ds->ports[port] = NULL; free_netdev(slave_dev); - return NULL; + return ret; } netif_carrier_off(slave_dev); - if (p->phy != NULL) { - phy_attach(slave_dev, dev_name(&p->phy->dev), - PHY_INTERFACE_MODE_GMII); + return 0; +} + +static bool dsa_slave_dev_check(struct net_device *dev) +{ + return dev->netdev_ops == &dsa_slave_netdev_ops; +} - p->phy->autoneg = AUTONEG_ENABLE; - p->phy->speed = 0; - p->phy->duplex = 0; - p->phy->advertising = p->phy->supported | ADVERTISED_Autoneg; - phy_start_aneg(p->phy); +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; } - return slave_dev; +out: + return NOTIFY_DONE; }