| /* |
| * 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 <net/rtnetlink.h> |
| #include <net/switchdev.h> |
| #include <linux/if_bridge.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->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, 0); |
| 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_slave_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], |
| struct net_device *dev, |
| const unsigned char *addr, u16 vid, u16 nlm_flags) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret = -EOPNOTSUPP; |
| |
| if (ds->drv->fdb_add) |
| ret = ds->drv->fdb_add(ds, p->port, addr, vid); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], |
| struct net_device *dev, |
| const unsigned char *addr, u16 vid) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| int ret = -EOPNOTSUPP; |
| |
| if (ds->drv->fdb_del) |
| ret = ds->drv->fdb_del(ds, p->port, addr, vid); |
| |
| return ret; |
| } |
| |
| static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb, |
| const unsigned char *addr, u16 vid, |
| bool is_static, |
| u32 portid, u32 seq, int type, |
| unsigned int flags) |
| { |
| struct nlmsghdr *nlh; |
| struct ndmsg *ndm; |
| |
| nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags); |
| if (!nlh) |
| return -EMSGSIZE; |
| |
| ndm = nlmsg_data(nlh); |
| ndm->ndm_family = AF_BRIDGE; |
| ndm->ndm_pad1 = 0; |
| ndm->ndm_pad2 = 0; |
| ndm->ndm_flags = NTF_EXT_LEARNED; |
| ndm->ndm_type = 0; |
| ndm->ndm_ifindex = dev->ifindex; |
| ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; |
| |
| if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) |
| goto nla_put_failure; |
| |
| if (vid && nla_put_u16(skb, NDA_VLAN, vid)) |
| goto nla_put_failure; |
| |
| nlmsg_end(skb, nlh); |
| return 0; |
| |
| nla_put_failure: |
| nlmsg_cancel(skb, nlh); |
| return -EMSGSIZE; |
| } |
| |
| /* Dump information about entries, in response to GETNEIGH */ |
| static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, |
| struct net_device *dev, |
| struct net_device *filter_dev, int idx) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| unsigned char addr[ETH_ALEN] = { 0 }; |
| int ret; |
| |
| if (!ds->drv->fdb_getnext) |
| return -EOPNOTSUPP; |
| |
| for (; ; idx++) { |
| bool is_static; |
| |
| ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static); |
| if (ret < 0) |
| break; |
| |
| if (idx < cb->args[0]) |
| continue; |
| |
| ret = dsa_slave_fill_info(dev, skb, addr, 0, |
| is_static, |
| NETLINK_CB(cb->skb).portid, |
| cb->nlh->nlmsg_seq, |
| RTM_NEWNEIGH, NLM_F_MULTI); |
| if (ret < 0) |
| break; |
| } |
| |
| return idx; |
| } |
| |
| 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; |
| } |
| |
| /* 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_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_parent_id_get(struct net_device *dev, |
| struct netdev_phys_item_id *psid) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| struct dsa_switch *ds = p->parent; |
| |
| psid->id_len = sizeof(ds->index); |
| memcpy(&psid->id, &ds->index, psid->id_len); |
| |
| return 0; |
| } |
| |
| static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| return p->xmit(skb, dev); |
| } |
| |
| static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| struct dsa_slave_priv *p = netdev_priv(dev); |
| |
| skb->dev = p->parent->dst->master_netdev; |
| dev_queue_xmit(skb); |
| |
| 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->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; |
| } |
| |
| 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 = dsa_slave_fdb_add, |
| .ndo_fdb_del = dsa_slave_fdb_del, |
| .ndo_fdb_dump = dsa_slave_fdb_dump, |
| .ndo_do_ioctl = dsa_slave_ioctl, |
| .ndo_get_iflink = dsa_slave_get_iflink, |
| }; |
| |
| static const struct swdev_ops dsa_slave_swdev_ops = { |
| .swdev_parent_id_get = dsa_slave_parent_id_get, |
| .swdev_port_stp_update = dsa_slave_stp_update, |
| }; |
| |
| 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 = ds->slave_mii_bus->phy_map[addr]; |
| if (!p->phy) |
| 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\n"); |
| 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) { |
| ret = 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 && ret >= 0 && |
| (ds->phys_mii_mask & (1 << ret))) { |
| ret = dsa_slave_phy_connect(p, slave_dev, ret); |
| if (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) |
| return ret; |
| } else { |
| netdev_info(slave_dev, "attached PHY at address %d [%s]\n", |
| p->phy->addr, p->phy->drv->name); |
| } |
| |
| return 0; |
| } |
| |
| 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, |
| 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->tx_queue_len = 0; |
| slave_dev->netdev_ops = &dsa_slave_netdev_ops; |
| slave_dev->swdev_ops = &dsa_slave_swdev_ops; |
| |
| 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; |
| |
| ret = dsa_slave_phy_setup(p, slave_dev); |
| if (ret) { |
| free_netdev(slave_dev); |
| return ret; |
| } |
| |
| 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); |
| phy_disconnect(p->phy); |
| ds->ports[port] = NULL; |
| free_netdev(slave_dev); |
| return ret; |
| } |
| |
| netif_carrier_off(slave_dev); |
| |
| return 0; |
| } |
| |
| 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) |
| netdev_warn(dev, "failed to reflect master change\n"); |
| |
| break; |
| } |
| |
| out: |
| return NOTIFY_DONE; |
| } |