2 * net/dsa/slave.c - Slave device handling
3 * Copyright (c) 2008-2009 Marvell Semiconductor
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
11 #include <linux/list.h>
12 #include <linux/etherdevice.h>
13 #include <linux/netdevice.h>
14 #include <linux/phy.h>
15 #include <linux/phy_fixed.h>
16 #include <linux/of_net.h>
17 #include <linux/of_mdio.h>
18 #include <net/rtnetlink.h>
19 #include <net/switchdev.h>
20 #include <linux/if_bridge.h>
21 #include <linux/netpoll.h>
24 /* slave mii_bus handling ***************************************************/
25 static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
27 struct dsa_switch *ds = bus->priv;
29 if (ds->phys_mii_mask & (1 << addr))
30 return ds->drv->phy_read(ds, addr, reg);
35 static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
37 struct dsa_switch *ds = bus->priv;
39 if (ds->phys_mii_mask & (1 << addr))
40 return ds->drv->phy_write(ds, addr, reg, val);
45 void dsa_slave_mii_bus_init(struct dsa_switch *ds)
47 ds->slave_mii_bus->priv = (void *)ds;
48 ds->slave_mii_bus->name = "dsa slave smi";
49 ds->slave_mii_bus->read = dsa_slave_phy_read;
50 ds->slave_mii_bus->write = dsa_slave_phy_write;
51 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x",
52 ds->index, ds->pd->sw_addr);
53 ds->slave_mii_bus->parent = ds->master_dev;
54 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
58 /* slave device handling ****************************************************/
59 static int dsa_slave_get_iflink(const struct net_device *dev)
61 struct dsa_slave_priv *p = netdev_priv(dev);
63 return p->parent->dst->master_netdev->ifindex;
66 static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p)
68 return !!p->bridge_dev;
71 static int dsa_slave_open(struct net_device *dev)
73 struct dsa_slave_priv *p = netdev_priv(dev);
74 struct net_device *master = p->parent->dst->master_netdev;
75 struct dsa_switch *ds = p->parent;
76 u8 stp_state = dsa_port_is_bridged(p) ?
77 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
80 if (!(master->flags & IFF_UP))
83 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
84 err = dev_uc_add(master, dev->dev_addr);
89 if (dev->flags & IFF_ALLMULTI) {
90 err = dev_set_allmulti(master, 1);
94 if (dev->flags & IFF_PROMISC) {
95 err = dev_set_promiscuity(master, 1);
100 if (ds->drv->port_enable) {
101 err = ds->drv->port_enable(ds, p->port, p->phy);
106 if (ds->drv->port_stp_update)
107 ds->drv->port_stp_update(ds, p->port, stp_state);
115 if (dev->flags & IFF_PROMISC)
116 dev_set_promiscuity(master, -1);
118 if (dev->flags & IFF_ALLMULTI)
119 dev_set_allmulti(master, -1);
121 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
122 dev_uc_del(master, dev->dev_addr);
127 static int dsa_slave_close(struct net_device *dev)
129 struct dsa_slave_priv *p = netdev_priv(dev);
130 struct net_device *master = p->parent->dst->master_netdev;
131 struct dsa_switch *ds = p->parent;
136 dev_mc_unsync(master, dev);
137 dev_uc_unsync(master, dev);
138 if (dev->flags & IFF_ALLMULTI)
139 dev_set_allmulti(master, -1);
140 if (dev->flags & IFF_PROMISC)
141 dev_set_promiscuity(master, -1);
143 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
144 dev_uc_del(master, dev->dev_addr);
146 if (ds->drv->port_disable)
147 ds->drv->port_disable(ds, p->port, p->phy);
149 if (ds->drv->port_stp_update)
150 ds->drv->port_stp_update(ds, p->port, BR_STATE_DISABLED);
155 static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
157 struct dsa_slave_priv *p = netdev_priv(dev);
158 struct net_device *master = p->parent->dst->master_netdev;
160 if (change & IFF_ALLMULTI)
161 dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
162 if (change & IFF_PROMISC)
163 dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
166 static void dsa_slave_set_rx_mode(struct net_device *dev)
168 struct dsa_slave_priv *p = netdev_priv(dev);
169 struct net_device *master = p->parent->dst->master_netdev;
171 dev_mc_sync(master, dev);
172 dev_uc_sync(master, dev);
175 static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
177 struct dsa_slave_priv *p = netdev_priv(dev);
178 struct net_device *master = p->parent->dst->master_netdev;
179 struct sockaddr *addr = a;
182 if (!is_valid_ether_addr(addr->sa_data))
183 return -EADDRNOTAVAIL;
185 if (!(dev->flags & IFF_UP))
188 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
189 err = dev_uc_add(master, addr->sa_data);
194 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
195 dev_uc_del(master, dev->dev_addr);
198 ether_addr_copy(dev->dev_addr, addr->sa_data);
203 static int dsa_bridge_check_vlan_range(struct dsa_switch *ds,
204 const struct net_device *bridge,
205 u16 vid_begin, u16 vid_end)
207 struct dsa_slave_priv *p;
208 struct net_device *dev, *vlan_br;
209 DECLARE_BITMAP(members, DSA_MAX_PORTS);
210 DECLARE_BITMAP(untagged, DSA_MAX_PORTS);
214 if (!ds->drv->vlan_getnext || !vid_begin)
220 err = ds->drv->vlan_getnext(ds, &vid, members, untagged);
227 member = find_first_bit(members, DSA_MAX_PORTS);
228 if (member == DSA_MAX_PORTS)
231 dev = ds->ports[member];
232 p = netdev_priv(dev);
233 vlan_br = p->bridge_dev;
234 if (vlan_br == bridge)
237 netdev_dbg(vlan_br, "hardware VLAN %d already in use\n", vid);
239 } while (vid < vid_end);
241 return err == -ENOENT ? 0 : err;
244 static int dsa_slave_port_vlan_add(struct net_device *dev,
245 const struct switchdev_obj_port_vlan *vlan,
246 struct switchdev_trans *trans)
248 struct dsa_slave_priv *p = netdev_priv(dev);
249 struct dsa_switch *ds = p->parent;
253 if (switchdev_trans_ph_prepare(trans)) {
254 if (!ds->drv->port_vlan_add || !ds->drv->port_pvid_set)
257 /* If the requested port doesn't belong to the same bridge as
258 * the VLAN members, fallback to software VLAN (hopefully).
260 err = dsa_bridge_check_vlan_range(ds, p->bridge_dev,
266 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
267 err = ds->drv->port_vlan_add(ds, p->port, vid,
269 BRIDGE_VLAN_INFO_UNTAGGED);
270 if (!err && vlan->flags & BRIDGE_VLAN_INFO_PVID)
271 err = ds->drv->port_pvid_set(ds, p->port, vid);
280 static int dsa_slave_port_vlan_del(struct net_device *dev,
281 const struct switchdev_obj_port_vlan *vlan)
283 struct dsa_slave_priv *p = netdev_priv(dev);
284 struct dsa_switch *ds = p->parent;
288 if (!ds->drv->port_vlan_del)
291 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
292 err = ds->drv->port_vlan_del(ds, p->port, vid);
300 static int dsa_slave_port_vlan_dump(struct net_device *dev,
301 struct switchdev_obj_port_vlan *vlan,
302 switchdev_obj_dump_cb_t *cb)
304 struct dsa_slave_priv *p = netdev_priv(dev);
305 struct dsa_switch *ds = p->parent;
306 DECLARE_BITMAP(members, DSA_MAX_PORTS);
307 DECLARE_BITMAP(untagged, DSA_MAX_PORTS);
311 if (!ds->drv->vlan_getnext || !ds->drv->port_pvid_get)
314 err = ds->drv->port_pvid_get(ds, p->port, &pvid);
319 err = ds->drv->vlan_getnext(ds, &vid, members, untagged);
323 if (!test_bit(p->port, members))
326 memset(vlan, 0, sizeof(*vlan));
327 vlan->vid_begin = vlan->vid_end = vid;
330 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
332 if (test_bit(p->port, untagged))
333 vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
335 err = cb(&vlan->obj);
340 return err == -ENOENT ? 0 : err;
343 static int dsa_slave_port_fdb_add(struct net_device *dev,
344 const struct switchdev_obj_port_fdb *fdb,
345 struct switchdev_trans *trans)
347 struct dsa_slave_priv *p = netdev_priv(dev);
348 struct dsa_switch *ds = p->parent;
351 if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add)
354 if (switchdev_trans_ph_prepare(trans))
355 ret = ds->drv->port_fdb_prepare(ds, p->port, fdb, trans);
357 ret = ds->drv->port_fdb_add(ds, p->port, fdb, trans);
362 static int dsa_slave_port_fdb_del(struct net_device *dev,
363 const struct switchdev_obj_port_fdb *fdb)
365 struct dsa_slave_priv *p = netdev_priv(dev);
366 struct dsa_switch *ds = p->parent;
367 int ret = -EOPNOTSUPP;
369 if (ds->drv->port_fdb_del)
370 ret = ds->drv->port_fdb_del(ds, p->port, fdb);
375 static int dsa_slave_port_fdb_dump(struct net_device *dev,
376 struct switchdev_obj_port_fdb *fdb,
377 switchdev_obj_dump_cb_t *cb)
379 struct dsa_slave_priv *p = netdev_priv(dev);
380 struct dsa_switch *ds = p->parent;
381 unsigned char addr[ETH_ALEN] = { 0 };
385 if (!ds->drv->port_fdb_getnext)
391 ret = ds->drv->port_fdb_getnext(ds, p->port, addr, &vid,
396 ether_addr_copy(fdb->addr, addr);
398 fdb->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
405 return ret == -ENOENT ? 0 : ret;
408 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
410 struct dsa_slave_priv *p = netdev_priv(dev);
413 return phy_mii_ioctl(p->phy, ifr, cmd);
418 /* Return a bitmask of all ports being currently bridged within a given bridge
419 * device. Note that on leave, the mask will still return the bitmask of ports
420 * currently bridged, prior to port removal, and this is exactly what we want.
422 static u32 dsa_slave_br_port_mask(struct dsa_switch *ds,
423 struct net_device *bridge)
425 struct dsa_slave_priv *p;
429 for (port = 0; port < DSA_MAX_PORTS; port++) {
430 if (!dsa_is_port_initialized(ds, port))
433 p = netdev_priv(ds->ports[port]);
435 if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT &&
436 p->bridge_dev == bridge)
443 static int dsa_slave_stp_update(struct net_device *dev, u8 state)
445 struct dsa_slave_priv *p = netdev_priv(dev);
446 struct dsa_switch *ds = p->parent;
447 int ret = -EOPNOTSUPP;
449 if (ds->drv->port_stp_update)
450 ret = ds->drv->port_stp_update(ds, p->port, state);
455 static int dsa_slave_port_attr_set(struct net_device *dev,
456 const struct switchdev_attr *attr,
457 struct switchdev_trans *trans)
459 struct dsa_slave_priv *p = netdev_priv(dev);
460 struct dsa_switch *ds = p->parent;
464 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
465 if (switchdev_trans_ph_prepare(trans))
466 ret = ds->drv->port_stp_update ? 0 : -EOPNOTSUPP;
468 ret = ds->drv->port_stp_update(ds, p->port,
479 static int dsa_slave_port_obj_add(struct net_device *dev,
480 const struct switchdev_obj *obj,
481 struct switchdev_trans *trans)
485 /* For the prepare phase, ensure the full set of changes is feasable in
486 * one go in order to signal a failure properly. If an operation is not
487 * supported, return -EOPNOTSUPP.
491 case SWITCHDEV_OBJ_ID_PORT_FDB:
492 err = dsa_slave_port_fdb_add(dev,
493 SWITCHDEV_OBJ_PORT_FDB(obj),
496 case SWITCHDEV_OBJ_ID_PORT_VLAN:
497 err = dsa_slave_port_vlan_add(dev,
498 SWITCHDEV_OBJ_PORT_VLAN(obj),
509 static int dsa_slave_port_obj_del(struct net_device *dev,
510 const struct switchdev_obj *obj)
515 case SWITCHDEV_OBJ_ID_PORT_FDB:
516 err = dsa_slave_port_fdb_del(dev,
517 SWITCHDEV_OBJ_PORT_FDB(obj));
519 case SWITCHDEV_OBJ_ID_PORT_VLAN:
520 err = dsa_slave_port_vlan_del(dev,
521 SWITCHDEV_OBJ_PORT_VLAN(obj));
531 static int dsa_slave_port_obj_dump(struct net_device *dev,
532 struct switchdev_obj *obj,
533 switchdev_obj_dump_cb_t *cb)
538 case SWITCHDEV_OBJ_ID_PORT_FDB:
539 err = dsa_slave_port_fdb_dump(dev,
540 SWITCHDEV_OBJ_PORT_FDB(obj),
543 case SWITCHDEV_OBJ_ID_PORT_VLAN:
544 err = dsa_slave_port_vlan_dump(dev,
545 SWITCHDEV_OBJ_PORT_VLAN(obj),
556 static int dsa_slave_bridge_port_join(struct net_device *dev,
557 struct net_device *br)
559 struct dsa_slave_priv *p = netdev_priv(dev);
560 struct dsa_switch *ds = p->parent;
561 int ret = -EOPNOTSUPP;
565 if (ds->drv->port_join_bridge)
566 ret = ds->drv->port_join_bridge(ds, p->port,
567 dsa_slave_br_port_mask(ds, br));
572 static int dsa_slave_bridge_port_leave(struct net_device *dev)
574 struct dsa_slave_priv *p = netdev_priv(dev);
575 struct dsa_switch *ds = p->parent;
576 int ret = -EOPNOTSUPP;
579 if (ds->drv->port_leave_bridge)
580 ret = ds->drv->port_leave_bridge(ds, p->port,
581 dsa_slave_br_port_mask(ds, p->bridge_dev));
583 p->bridge_dev = NULL;
585 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
586 * so allow it to be in BR_STATE_FORWARDING to be kept functional
588 dsa_slave_stp_update(dev, BR_STATE_FORWARDING);
593 static int dsa_slave_port_attr_get(struct net_device *dev,
594 struct switchdev_attr *attr)
596 struct dsa_slave_priv *p = netdev_priv(dev);
597 struct dsa_switch *ds = p->parent;
600 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
601 attr->u.ppid.id_len = sizeof(ds->index);
602 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
611 static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
614 #ifdef CONFIG_NET_POLL_CONTROLLER
616 netpoll_send_skb(p->netpoll, skb);
623 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
625 struct dsa_slave_priv *p = netdev_priv(dev);
626 struct sk_buff *nskb;
628 dev->stats.tx_packets++;
629 dev->stats.tx_bytes += skb->len;
631 /* Transmit function may have to reallocate the original SKB */
632 nskb = p->xmit(skb, dev);
636 /* SKB for netpoll still need to be mangled with the protocol-specific
637 * tag to be successfully transmitted
639 if (unlikely(netpoll_tx_running(dev)))
640 return dsa_netpoll_send_skb(p, nskb);
642 /* Queue the SKB for transmission on the parent interface, but
643 * do not modify its EtherType
645 nskb->dev = p->parent->dst->master_netdev;
646 dev_queue_xmit(nskb);
651 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
652 struct net_device *dev)
654 /* Just return the original SKB */
659 /* ethtool operations *******************************************************/
661 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
663 struct dsa_slave_priv *p = netdev_priv(dev);
667 if (p->phy != NULL) {
668 err = phy_read_status(p->phy);
670 err = phy_ethtool_gset(p->phy, cmd);
677 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
679 struct dsa_slave_priv *p = netdev_priv(dev);
682 return phy_ethtool_sset(p->phy, cmd);
687 static void dsa_slave_get_drvinfo(struct net_device *dev,
688 struct ethtool_drvinfo *drvinfo)
690 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
691 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
692 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
693 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
696 static int dsa_slave_get_regs_len(struct net_device *dev)
698 struct dsa_slave_priv *p = netdev_priv(dev);
699 struct dsa_switch *ds = p->parent;
701 if (ds->drv->get_regs_len)
702 return ds->drv->get_regs_len(ds, p->port);
708 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
710 struct dsa_slave_priv *p = netdev_priv(dev);
711 struct dsa_switch *ds = p->parent;
713 if (ds->drv->get_regs)
714 ds->drv->get_regs(ds, p->port, regs, _p);
717 static int dsa_slave_nway_reset(struct net_device *dev)
719 struct dsa_slave_priv *p = netdev_priv(dev);
722 return genphy_restart_aneg(p->phy);
727 static u32 dsa_slave_get_link(struct net_device *dev)
729 struct dsa_slave_priv *p = netdev_priv(dev);
731 if (p->phy != NULL) {
732 genphy_update_link(p->phy);
739 static int dsa_slave_get_eeprom_len(struct net_device *dev)
741 struct dsa_slave_priv *p = netdev_priv(dev);
742 struct dsa_switch *ds = p->parent;
744 if (ds->pd->eeprom_len)
745 return ds->pd->eeprom_len;
747 if (ds->drv->get_eeprom_len)
748 return ds->drv->get_eeprom_len(ds);
753 static int dsa_slave_get_eeprom(struct net_device *dev,
754 struct ethtool_eeprom *eeprom, u8 *data)
756 struct dsa_slave_priv *p = netdev_priv(dev);
757 struct dsa_switch *ds = p->parent;
759 if (ds->drv->get_eeprom)
760 return ds->drv->get_eeprom(ds, eeprom, data);
765 static int dsa_slave_set_eeprom(struct net_device *dev,
766 struct ethtool_eeprom *eeprom, u8 *data)
768 struct dsa_slave_priv *p = netdev_priv(dev);
769 struct dsa_switch *ds = p->parent;
771 if (ds->drv->set_eeprom)
772 return ds->drv->set_eeprom(ds, eeprom, data);
777 static void dsa_slave_get_strings(struct net_device *dev,
778 uint32_t stringset, uint8_t *data)
780 struct dsa_slave_priv *p = netdev_priv(dev);
781 struct dsa_switch *ds = p->parent;
783 if (stringset == ETH_SS_STATS) {
784 int len = ETH_GSTRING_LEN;
786 strncpy(data, "tx_packets", len);
787 strncpy(data + len, "tx_bytes", len);
788 strncpy(data + 2 * len, "rx_packets", len);
789 strncpy(data + 3 * len, "rx_bytes", len);
790 if (ds->drv->get_strings != NULL)
791 ds->drv->get_strings(ds, p->port, data + 4 * len);
795 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
796 struct ethtool_stats *stats,
799 struct dsa_slave_priv *p = netdev_priv(dev);
800 struct dsa_switch *ds = p->parent;
802 data[0] = p->dev->stats.tx_packets;
803 data[1] = p->dev->stats.tx_bytes;
804 data[2] = p->dev->stats.rx_packets;
805 data[3] = p->dev->stats.rx_bytes;
806 if (ds->drv->get_ethtool_stats != NULL)
807 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
810 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
812 struct dsa_slave_priv *p = netdev_priv(dev);
813 struct dsa_switch *ds = p->parent;
815 if (sset == ETH_SS_STATS) {
819 if (ds->drv->get_sset_count != NULL)
820 count += ds->drv->get_sset_count(ds);
828 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
830 struct dsa_slave_priv *p = netdev_priv(dev);
831 struct dsa_switch *ds = p->parent;
833 if (ds->drv->get_wol)
834 ds->drv->get_wol(ds, p->port, w);
837 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
839 struct dsa_slave_priv *p = netdev_priv(dev);
840 struct dsa_switch *ds = p->parent;
841 int ret = -EOPNOTSUPP;
843 if (ds->drv->set_wol)
844 ret = ds->drv->set_wol(ds, p->port, w);
849 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
851 struct dsa_slave_priv *p = netdev_priv(dev);
852 struct dsa_switch *ds = p->parent;
855 if (!ds->drv->set_eee)
858 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
863 ret = phy_ethtool_set_eee(p->phy, e);
868 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
870 struct dsa_slave_priv *p = netdev_priv(dev);
871 struct dsa_switch *ds = p->parent;
874 if (!ds->drv->get_eee)
877 ret = ds->drv->get_eee(ds, p->port, e);
882 ret = phy_ethtool_get_eee(p->phy, e);
887 #ifdef CONFIG_NET_POLL_CONTROLLER
888 static int dsa_slave_netpoll_setup(struct net_device *dev,
889 struct netpoll_info *ni)
891 struct dsa_slave_priv *p = netdev_priv(dev);
892 struct dsa_switch *ds = p->parent;
893 struct net_device *master = ds->dst->master_netdev;
894 struct netpoll *netpoll;
897 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
901 err = __netpoll_setup(netpoll, master);
907 p->netpoll = netpoll;
912 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
914 struct dsa_slave_priv *p = netdev_priv(dev);
915 struct netpoll *netpoll = p->netpoll;
922 __netpoll_free_async(netpoll);
925 static void dsa_slave_poll_controller(struct net_device *dev)
930 static const struct ethtool_ops dsa_slave_ethtool_ops = {
931 .get_settings = dsa_slave_get_settings,
932 .set_settings = dsa_slave_set_settings,
933 .get_drvinfo = dsa_slave_get_drvinfo,
934 .get_regs_len = dsa_slave_get_regs_len,
935 .get_regs = dsa_slave_get_regs,
936 .nway_reset = dsa_slave_nway_reset,
937 .get_link = dsa_slave_get_link,
938 .get_eeprom_len = dsa_slave_get_eeprom_len,
939 .get_eeprom = dsa_slave_get_eeprom,
940 .set_eeprom = dsa_slave_set_eeprom,
941 .get_strings = dsa_slave_get_strings,
942 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
943 .get_sset_count = dsa_slave_get_sset_count,
944 .set_wol = dsa_slave_set_wol,
945 .get_wol = dsa_slave_get_wol,
946 .set_eee = dsa_slave_set_eee,
947 .get_eee = dsa_slave_get_eee,
950 static const struct net_device_ops dsa_slave_netdev_ops = {
951 .ndo_open = dsa_slave_open,
952 .ndo_stop = dsa_slave_close,
953 .ndo_start_xmit = dsa_slave_xmit,
954 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
955 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
956 .ndo_set_mac_address = dsa_slave_set_mac_address,
957 .ndo_fdb_add = switchdev_port_fdb_add,
958 .ndo_fdb_del = switchdev_port_fdb_del,
959 .ndo_fdb_dump = switchdev_port_fdb_dump,
960 .ndo_do_ioctl = dsa_slave_ioctl,
961 .ndo_get_iflink = dsa_slave_get_iflink,
962 #ifdef CONFIG_NET_POLL_CONTROLLER
963 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
964 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
965 .ndo_poll_controller = dsa_slave_poll_controller,
967 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
968 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
969 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
972 static const struct switchdev_ops dsa_slave_switchdev_ops = {
973 .switchdev_port_attr_get = dsa_slave_port_attr_get,
974 .switchdev_port_attr_set = dsa_slave_port_attr_set,
975 .switchdev_port_obj_add = dsa_slave_port_obj_add,
976 .switchdev_port_obj_del = dsa_slave_port_obj_del,
977 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
980 static struct device_type dsa_type = {
984 static void dsa_slave_adjust_link(struct net_device *dev)
986 struct dsa_slave_priv *p = netdev_priv(dev);
987 struct dsa_switch *ds = p->parent;
988 unsigned int status_changed = 0;
990 if (p->old_link != p->phy->link) {
992 p->old_link = p->phy->link;
995 if (p->old_duplex != p->phy->duplex) {
997 p->old_duplex = p->phy->duplex;
1000 if (p->old_pause != p->phy->pause) {
1002 p->old_pause = p->phy->pause;
1005 if (ds->drv->adjust_link && status_changed)
1006 ds->drv->adjust_link(ds, p->port, p->phy);
1009 phy_print_status(p->phy);
1012 static int dsa_slave_fixed_link_update(struct net_device *dev,
1013 struct fixed_phy_status *status)
1015 struct dsa_slave_priv *p = netdev_priv(dev);
1016 struct dsa_switch *ds = p->parent;
1018 if (ds->drv->fixed_link_update)
1019 ds->drv->fixed_link_update(ds, p->port, status);
1024 /* slave device setup *******************************************************/
1025 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
1026 struct net_device *slave_dev,
1029 struct dsa_switch *ds = p->parent;
1031 p->phy = ds->slave_mii_bus->phy_map[addr];
1033 netdev_err(slave_dev, "no phy at %d\n", addr);
1037 /* Use already configured phy mode */
1038 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
1039 p->phy_interface = p->phy->interface;
1040 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
1046 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
1047 struct net_device *slave_dev)
1049 struct dsa_switch *ds = p->parent;
1050 struct dsa_chip_data *cd = ds->pd;
1051 struct device_node *phy_dn, *port_dn;
1052 bool phy_is_fixed = false;
1056 port_dn = cd->port_dn[p->port];
1057 mode = of_get_phy_mode(port_dn);
1059 mode = PHY_INTERFACE_MODE_NA;
1060 p->phy_interface = mode;
1062 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
1063 if (of_phy_is_fixed_link(port_dn)) {
1064 /* In the case of a fixed PHY, the DT node associated
1065 * to the fixed PHY is the Port DT node
1067 ret = of_phy_register_fixed_link(port_dn);
1069 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
1072 phy_is_fixed = true;
1076 if (ds->drv->get_phy_flags)
1077 phy_flags = ds->drv->get_phy_flags(ds, p->port);
1080 int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
1082 /* If this PHY address is part of phys_mii_mask, which means
1083 * that we need to divert reads and writes to/from it, then we
1084 * want to bind this device using the slave MII bus created by
1085 * DSA to make that happen.
1087 if (!phy_is_fixed && phy_id >= 0 &&
1088 (ds->phys_mii_mask & (1 << phy_id))) {
1089 ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
1091 netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
1095 p->phy = of_phy_connect(slave_dev, phy_dn,
1096 dsa_slave_adjust_link,
1102 if (p->phy && phy_is_fixed)
1103 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
1105 /* We could not connect to a designated PHY, so use the switch internal
1109 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
1111 netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
1115 netdev_info(slave_dev, "attached PHY at address %d [%s]\n",
1116 p->phy->addr, p->phy->drv->name);
1122 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1123 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1124 struct netdev_queue *txq,
1127 lockdep_set_class(&txq->_xmit_lock,
1128 &dsa_slave_netdev_xmit_lock_key);
1131 int dsa_slave_suspend(struct net_device *slave_dev)
1133 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1140 phy_suspend(p->phy);
1146 int dsa_slave_resume(struct net_device *slave_dev)
1148 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1150 netif_device_attach(slave_dev);
1160 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
1161 int port, char *name)
1163 struct net_device *master = ds->dst->master_netdev;
1164 struct net_device *slave_dev;
1165 struct dsa_slave_priv *p;
1168 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1169 NET_NAME_UNKNOWN, ether_setup);
1170 if (slave_dev == NULL)
1173 slave_dev->features = master->vlan_features;
1174 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1175 eth_hw_addr_inherit(slave_dev, master);
1176 slave_dev->priv_flags |= IFF_NO_QUEUE;
1177 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1178 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1179 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1181 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1184 SET_NETDEV_DEV(slave_dev, parent);
1185 slave_dev->dev.of_node = ds->pd->port_dn[port];
1186 slave_dev->vlan_features = master->vlan_features;
1188 p = netdev_priv(slave_dev);
1193 switch (ds->dst->tag_protocol) {
1194 #ifdef CONFIG_NET_DSA_TAG_DSA
1195 case DSA_TAG_PROTO_DSA:
1196 p->xmit = dsa_netdev_ops.xmit;
1199 #ifdef CONFIG_NET_DSA_TAG_EDSA
1200 case DSA_TAG_PROTO_EDSA:
1201 p->xmit = edsa_netdev_ops.xmit;
1204 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1205 case DSA_TAG_PROTO_TRAILER:
1206 p->xmit = trailer_netdev_ops.xmit;
1209 #ifdef CONFIG_NET_DSA_TAG_BRCM
1210 case DSA_TAG_PROTO_BRCM:
1211 p->xmit = brcm_netdev_ops.xmit;
1215 p->xmit = dsa_slave_notag_xmit;
1223 ret = dsa_slave_phy_setup(p, slave_dev);
1225 netdev_err(master, "error %d setting up slave phy\n", ret);
1226 free_netdev(slave_dev);
1230 ds->ports[port] = slave_dev;
1231 ret = register_netdev(slave_dev);
1233 netdev_err(master, "error %d registering interface %s\n",
1234 ret, slave_dev->name);
1235 phy_disconnect(p->phy);
1236 ds->ports[port] = NULL;
1237 free_netdev(slave_dev);
1241 netif_carrier_off(slave_dev);
1246 static bool dsa_slave_dev_check(struct net_device *dev)
1248 return dev->netdev_ops == &dsa_slave_netdev_ops;
1251 static int dsa_slave_master_changed(struct net_device *dev)
1253 struct net_device *master = netdev_master_upper_dev_get(dev);
1254 struct dsa_slave_priv *p = netdev_priv(dev);
1257 if (master && master->rtnl_link_ops &&
1258 !strcmp(master->rtnl_link_ops->kind, "bridge"))
1259 err = dsa_slave_bridge_port_join(dev, master);
1260 else if (dsa_port_is_bridged(p))
1261 err = dsa_slave_bridge_port_leave(dev);
1266 int dsa_slave_netdevice_event(struct notifier_block *unused,
1267 unsigned long event, void *ptr)
1269 struct net_device *dev;
1273 case NETDEV_CHANGEUPPER:
1274 dev = netdev_notifier_info_to_dev(ptr);
1275 if (!dsa_slave_dev_check(dev))
1278 err = dsa_slave_master_changed(dev);
1279 if (err && err != -EOPNOTSUPP)
1280 netdev_warn(dev, "failed to reflect master change\n");