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 <linux/mdio.h>
19 #include <net/rtnetlink.h>
20 #include <net/switchdev.h>
21 #include <linux/if_bridge.h>
22 #include <linux/netpoll.h>
25 /* slave mii_bus handling ***************************************************/
26 static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
28 struct dsa_switch *ds = bus->priv;
30 if (ds->phys_mii_mask & (1 << addr))
31 return ds->drv->phy_read(ds, addr, reg);
36 static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
38 struct dsa_switch *ds = bus->priv;
40 if (ds->phys_mii_mask & (1 << addr))
41 return ds->drv->phy_write(ds, addr, reg, val);
46 void dsa_slave_mii_bus_init(struct dsa_switch *ds)
48 ds->slave_mii_bus->priv = (void *)ds;
49 ds->slave_mii_bus->name = "dsa slave smi";
50 ds->slave_mii_bus->read = dsa_slave_phy_read;
51 ds->slave_mii_bus->write = dsa_slave_phy_write;
52 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x",
53 ds->index, ds->pd->sw_addr);
54 ds->slave_mii_bus->parent = ds->master_dev;
55 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
59 /* slave device handling ****************************************************/
60 static int dsa_slave_get_iflink(const struct net_device *dev)
62 struct dsa_slave_priv *p = netdev_priv(dev);
64 return p->parent->dst->master_netdev->ifindex;
67 static inline bool dsa_port_is_bridged(struct dsa_slave_priv *p)
69 return !!p->bridge_dev;
72 static int dsa_slave_open(struct net_device *dev)
74 struct dsa_slave_priv *p = netdev_priv(dev);
75 struct net_device *master = p->parent->dst->master_netdev;
76 struct dsa_switch *ds = p->parent;
77 u8 stp_state = dsa_port_is_bridged(p) ?
78 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
81 if (!(master->flags & IFF_UP))
84 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
85 err = dev_uc_add(master, dev->dev_addr);
90 if (dev->flags & IFF_ALLMULTI) {
91 err = dev_set_allmulti(master, 1);
95 if (dev->flags & IFF_PROMISC) {
96 err = dev_set_promiscuity(master, 1);
101 if (ds->drv->port_enable) {
102 err = ds->drv->port_enable(ds, p->port, p->phy);
107 if (ds->drv->port_stp_state_set)
108 ds->drv->port_stp_state_set(ds, p->port, stp_state);
116 if (dev->flags & IFF_PROMISC)
117 dev_set_promiscuity(master, -1);
119 if (dev->flags & IFF_ALLMULTI)
120 dev_set_allmulti(master, -1);
122 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
123 dev_uc_del(master, dev->dev_addr);
128 static int dsa_slave_close(struct net_device *dev)
130 struct dsa_slave_priv *p = netdev_priv(dev);
131 struct net_device *master = p->parent->dst->master_netdev;
132 struct dsa_switch *ds = p->parent;
137 dev_mc_unsync(master, dev);
138 dev_uc_unsync(master, dev);
139 if (dev->flags & IFF_ALLMULTI)
140 dev_set_allmulti(master, -1);
141 if (dev->flags & IFF_PROMISC)
142 dev_set_promiscuity(master, -1);
144 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
145 dev_uc_del(master, dev->dev_addr);
147 if (ds->drv->port_disable)
148 ds->drv->port_disable(ds, p->port, p->phy);
150 if (ds->drv->port_stp_state_set)
151 ds->drv->port_stp_state_set(ds, p->port, BR_STATE_DISABLED);
156 static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
158 struct dsa_slave_priv *p = netdev_priv(dev);
159 struct net_device *master = p->parent->dst->master_netdev;
161 if (change & IFF_ALLMULTI)
162 dev_set_allmulti(master, dev->flags & IFF_ALLMULTI ? 1 : -1);
163 if (change & IFF_PROMISC)
164 dev_set_promiscuity(master, dev->flags & IFF_PROMISC ? 1 : -1);
167 static void dsa_slave_set_rx_mode(struct net_device *dev)
169 struct dsa_slave_priv *p = netdev_priv(dev);
170 struct net_device *master = p->parent->dst->master_netdev;
172 dev_mc_sync(master, dev);
173 dev_uc_sync(master, dev);
176 static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
178 struct dsa_slave_priv *p = netdev_priv(dev);
179 struct net_device *master = p->parent->dst->master_netdev;
180 struct sockaddr *addr = a;
183 if (!is_valid_ether_addr(addr->sa_data))
184 return -EADDRNOTAVAIL;
186 if (!(dev->flags & IFF_UP))
189 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
190 err = dev_uc_add(master, addr->sa_data);
195 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
196 dev_uc_del(master, dev->dev_addr);
199 ether_addr_copy(dev->dev_addr, addr->sa_data);
204 static int dsa_slave_port_vlan_add(struct net_device *dev,
205 const struct switchdev_obj_port_vlan *vlan,
206 struct switchdev_trans *trans)
208 struct dsa_slave_priv *p = netdev_priv(dev);
209 struct dsa_switch *ds = p->parent;
212 if (switchdev_trans_ph_prepare(trans)) {
213 if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add)
216 err = ds->drv->port_vlan_prepare(ds, p->port, vlan, trans);
220 err = ds->drv->port_vlan_add(ds, p->port, vlan, trans);
228 static int dsa_slave_port_vlan_del(struct net_device *dev,
229 const struct switchdev_obj_port_vlan *vlan)
231 struct dsa_slave_priv *p = netdev_priv(dev);
232 struct dsa_switch *ds = p->parent;
234 if (!ds->drv->port_vlan_del)
237 return ds->drv->port_vlan_del(ds, p->port, vlan);
240 static int dsa_slave_port_vlan_dump(struct net_device *dev,
241 struct switchdev_obj_port_vlan *vlan,
242 switchdev_obj_dump_cb_t *cb)
244 struct dsa_slave_priv *p = netdev_priv(dev);
245 struct dsa_switch *ds = p->parent;
247 if (ds->drv->port_vlan_dump)
248 return ds->drv->port_vlan_dump(ds, p->port, vlan, cb);
253 static int dsa_slave_port_fdb_add(struct net_device *dev,
254 const struct switchdev_obj_port_fdb *fdb,
255 struct switchdev_trans *trans)
257 struct dsa_slave_priv *p = netdev_priv(dev);
258 struct dsa_switch *ds = p->parent;
261 if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add)
264 if (switchdev_trans_ph_prepare(trans))
265 ret = ds->drv->port_fdb_prepare(ds, p->port, fdb, trans);
267 ret = ds->drv->port_fdb_add(ds, p->port, fdb, trans);
272 static int dsa_slave_port_fdb_del(struct net_device *dev,
273 const struct switchdev_obj_port_fdb *fdb)
275 struct dsa_slave_priv *p = netdev_priv(dev);
276 struct dsa_switch *ds = p->parent;
277 int ret = -EOPNOTSUPP;
279 if (ds->drv->port_fdb_del)
280 ret = ds->drv->port_fdb_del(ds, p->port, fdb);
285 static int dsa_slave_port_fdb_dump(struct net_device *dev,
286 struct switchdev_obj_port_fdb *fdb,
287 switchdev_obj_dump_cb_t *cb)
289 struct dsa_slave_priv *p = netdev_priv(dev);
290 struct dsa_switch *ds = p->parent;
292 if (ds->drv->port_fdb_dump)
293 return ds->drv->port_fdb_dump(ds, p->port, fdb, cb);
298 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
300 struct dsa_slave_priv *p = netdev_priv(dev);
303 return phy_mii_ioctl(p->phy, ifr, cmd);
308 static int dsa_slave_stp_state_set(struct net_device *dev,
309 const struct switchdev_attr *attr,
310 struct switchdev_trans *trans)
312 struct dsa_slave_priv *p = netdev_priv(dev);
313 struct dsa_switch *ds = p->parent;
315 if (switchdev_trans_ph_prepare(trans))
316 return ds->drv->port_stp_state_set ? 0 : -EOPNOTSUPP;
318 ds->drv->port_stp_state_set(ds, p->port, attr->u.stp_state);
323 static int dsa_slave_vlan_filtering(struct net_device *dev,
324 const struct switchdev_attr *attr,
325 struct switchdev_trans *trans)
327 struct dsa_slave_priv *p = netdev_priv(dev);
328 struct dsa_switch *ds = p->parent;
330 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
331 if (switchdev_trans_ph_prepare(trans))
334 if (ds->drv->port_vlan_filtering)
335 return ds->drv->port_vlan_filtering(ds, p->port,
336 attr->u.vlan_filtering);
341 static int dsa_slave_port_attr_set(struct net_device *dev,
342 const struct switchdev_attr *attr,
343 struct switchdev_trans *trans)
348 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
349 ret = dsa_slave_stp_state_set(dev, attr, trans);
351 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
352 ret = dsa_slave_vlan_filtering(dev, attr, trans);
362 static int dsa_slave_port_obj_add(struct net_device *dev,
363 const struct switchdev_obj *obj,
364 struct switchdev_trans *trans)
368 /* For the prepare phase, ensure the full set of changes is feasable in
369 * one go in order to signal a failure properly. If an operation is not
370 * supported, return -EOPNOTSUPP.
374 case SWITCHDEV_OBJ_ID_PORT_FDB:
375 err = dsa_slave_port_fdb_add(dev,
376 SWITCHDEV_OBJ_PORT_FDB(obj),
379 case SWITCHDEV_OBJ_ID_PORT_VLAN:
380 err = dsa_slave_port_vlan_add(dev,
381 SWITCHDEV_OBJ_PORT_VLAN(obj),
392 static int dsa_slave_port_obj_del(struct net_device *dev,
393 const struct switchdev_obj *obj)
398 case SWITCHDEV_OBJ_ID_PORT_FDB:
399 err = dsa_slave_port_fdb_del(dev,
400 SWITCHDEV_OBJ_PORT_FDB(obj));
402 case SWITCHDEV_OBJ_ID_PORT_VLAN:
403 err = dsa_slave_port_vlan_del(dev,
404 SWITCHDEV_OBJ_PORT_VLAN(obj));
414 static int dsa_slave_port_obj_dump(struct net_device *dev,
415 struct switchdev_obj *obj,
416 switchdev_obj_dump_cb_t *cb)
421 case SWITCHDEV_OBJ_ID_PORT_FDB:
422 err = dsa_slave_port_fdb_dump(dev,
423 SWITCHDEV_OBJ_PORT_FDB(obj),
426 case SWITCHDEV_OBJ_ID_PORT_VLAN:
427 err = dsa_slave_port_vlan_dump(dev,
428 SWITCHDEV_OBJ_PORT_VLAN(obj),
439 static int dsa_slave_bridge_port_join(struct net_device *dev,
440 struct net_device *br)
442 struct dsa_slave_priv *p = netdev_priv(dev);
443 struct dsa_switch *ds = p->parent;
444 int ret = -EOPNOTSUPP;
448 if (ds->drv->port_bridge_join)
449 ret = ds->drv->port_bridge_join(ds, p->port, br);
451 return ret == -EOPNOTSUPP ? 0 : ret;
454 static void dsa_slave_bridge_port_leave(struct net_device *dev)
456 struct dsa_slave_priv *p = netdev_priv(dev);
457 struct dsa_switch *ds = p->parent;
460 if (ds->drv->port_bridge_leave)
461 ds->drv->port_bridge_leave(ds, p->port);
463 p->bridge_dev = NULL;
465 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
466 * so allow it to be in BR_STATE_FORWARDING to be kept functional
468 if (ds->drv->port_stp_state_set)
469 ds->drv->port_stp_state_set(ds, p->port, BR_STATE_FORWARDING);
472 static int dsa_slave_port_attr_get(struct net_device *dev,
473 struct switchdev_attr *attr)
475 struct dsa_slave_priv *p = netdev_priv(dev);
476 struct dsa_switch *ds = p->parent;
479 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
480 attr->u.ppid.id_len = sizeof(ds->index);
481 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
490 static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
493 #ifdef CONFIG_NET_POLL_CONTROLLER
495 netpoll_send_skb(p->netpoll, skb);
502 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
504 struct dsa_slave_priv *p = netdev_priv(dev);
505 struct sk_buff *nskb;
507 dev->stats.tx_packets++;
508 dev->stats.tx_bytes += skb->len;
510 /* Transmit function may have to reallocate the original SKB */
511 nskb = p->xmit(skb, dev);
515 /* SKB for netpoll still need to be mangled with the protocol-specific
516 * tag to be successfully transmitted
518 if (unlikely(netpoll_tx_running(dev)))
519 return dsa_netpoll_send_skb(p, nskb);
521 /* Queue the SKB for transmission on the parent interface, but
522 * do not modify its EtherType
524 nskb->dev = p->parent->dst->master_netdev;
525 dev_queue_xmit(nskb);
530 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
531 struct net_device *dev)
533 /* Just return the original SKB */
538 /* ethtool operations *******************************************************/
540 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
542 struct dsa_slave_priv *p = netdev_priv(dev);
546 if (p->phy != NULL) {
547 err = phy_read_status(p->phy);
549 err = phy_ethtool_gset(p->phy, cmd);
556 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
558 struct dsa_slave_priv *p = netdev_priv(dev);
561 return phy_ethtool_sset(p->phy, cmd);
566 static void dsa_slave_get_drvinfo(struct net_device *dev,
567 struct ethtool_drvinfo *drvinfo)
569 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
570 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
571 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
572 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
575 static int dsa_slave_get_regs_len(struct net_device *dev)
577 struct dsa_slave_priv *p = netdev_priv(dev);
578 struct dsa_switch *ds = p->parent;
580 if (ds->drv->get_regs_len)
581 return ds->drv->get_regs_len(ds, p->port);
587 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
589 struct dsa_slave_priv *p = netdev_priv(dev);
590 struct dsa_switch *ds = p->parent;
592 if (ds->drv->get_regs)
593 ds->drv->get_regs(ds, p->port, regs, _p);
596 static int dsa_slave_nway_reset(struct net_device *dev)
598 struct dsa_slave_priv *p = netdev_priv(dev);
601 return genphy_restart_aneg(p->phy);
606 static u32 dsa_slave_get_link(struct net_device *dev)
608 struct dsa_slave_priv *p = netdev_priv(dev);
610 if (p->phy != NULL) {
611 genphy_update_link(p->phy);
618 static int dsa_slave_get_eeprom_len(struct net_device *dev)
620 struct dsa_slave_priv *p = netdev_priv(dev);
621 struct dsa_switch *ds = p->parent;
623 if (ds->pd->eeprom_len)
624 return ds->pd->eeprom_len;
626 if (ds->drv->get_eeprom_len)
627 return ds->drv->get_eeprom_len(ds);
632 static int dsa_slave_get_eeprom(struct net_device *dev,
633 struct ethtool_eeprom *eeprom, u8 *data)
635 struct dsa_slave_priv *p = netdev_priv(dev);
636 struct dsa_switch *ds = p->parent;
638 if (ds->drv->get_eeprom)
639 return ds->drv->get_eeprom(ds, eeprom, data);
644 static int dsa_slave_set_eeprom(struct net_device *dev,
645 struct ethtool_eeprom *eeprom, u8 *data)
647 struct dsa_slave_priv *p = netdev_priv(dev);
648 struct dsa_switch *ds = p->parent;
650 if (ds->drv->set_eeprom)
651 return ds->drv->set_eeprom(ds, eeprom, data);
656 static void dsa_slave_get_strings(struct net_device *dev,
657 uint32_t stringset, uint8_t *data)
659 struct dsa_slave_priv *p = netdev_priv(dev);
660 struct dsa_switch *ds = p->parent;
662 if (stringset == ETH_SS_STATS) {
663 int len = ETH_GSTRING_LEN;
665 strncpy(data, "tx_packets", len);
666 strncpy(data + len, "tx_bytes", len);
667 strncpy(data + 2 * len, "rx_packets", len);
668 strncpy(data + 3 * len, "rx_bytes", len);
669 if (ds->drv->get_strings != NULL)
670 ds->drv->get_strings(ds, p->port, data + 4 * len);
674 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
675 struct ethtool_stats *stats,
678 struct dsa_slave_priv *p = netdev_priv(dev);
679 struct dsa_switch *ds = p->parent;
681 data[0] = p->dev->stats.tx_packets;
682 data[1] = p->dev->stats.tx_bytes;
683 data[2] = p->dev->stats.rx_packets;
684 data[3] = p->dev->stats.rx_bytes;
685 if (ds->drv->get_ethtool_stats != NULL)
686 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
689 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
691 struct dsa_slave_priv *p = netdev_priv(dev);
692 struct dsa_switch *ds = p->parent;
694 if (sset == ETH_SS_STATS) {
698 if (ds->drv->get_sset_count != NULL)
699 count += ds->drv->get_sset_count(ds);
707 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
709 struct dsa_slave_priv *p = netdev_priv(dev);
710 struct dsa_switch *ds = p->parent;
712 if (ds->drv->get_wol)
713 ds->drv->get_wol(ds, p->port, w);
716 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
718 struct dsa_slave_priv *p = netdev_priv(dev);
719 struct dsa_switch *ds = p->parent;
720 int ret = -EOPNOTSUPP;
722 if (ds->drv->set_wol)
723 ret = ds->drv->set_wol(ds, p->port, w);
728 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
730 struct dsa_slave_priv *p = netdev_priv(dev);
731 struct dsa_switch *ds = p->parent;
734 if (!ds->drv->set_eee)
737 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
742 ret = phy_ethtool_set_eee(p->phy, e);
747 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
749 struct dsa_slave_priv *p = netdev_priv(dev);
750 struct dsa_switch *ds = p->parent;
753 if (!ds->drv->get_eee)
756 ret = ds->drv->get_eee(ds, p->port, e);
761 ret = phy_ethtool_get_eee(p->phy, e);
766 #ifdef CONFIG_NET_POLL_CONTROLLER
767 static int dsa_slave_netpoll_setup(struct net_device *dev,
768 struct netpoll_info *ni)
770 struct dsa_slave_priv *p = netdev_priv(dev);
771 struct dsa_switch *ds = p->parent;
772 struct net_device *master = ds->dst->master_netdev;
773 struct netpoll *netpoll;
776 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
780 err = __netpoll_setup(netpoll, master);
786 p->netpoll = netpoll;
791 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
793 struct dsa_slave_priv *p = netdev_priv(dev);
794 struct netpoll *netpoll = p->netpoll;
801 __netpoll_free_async(netpoll);
804 static void dsa_slave_poll_controller(struct net_device *dev)
809 static const struct ethtool_ops dsa_slave_ethtool_ops = {
810 .get_settings = dsa_slave_get_settings,
811 .set_settings = dsa_slave_set_settings,
812 .get_drvinfo = dsa_slave_get_drvinfo,
813 .get_regs_len = dsa_slave_get_regs_len,
814 .get_regs = dsa_slave_get_regs,
815 .nway_reset = dsa_slave_nway_reset,
816 .get_link = dsa_slave_get_link,
817 .get_eeprom_len = dsa_slave_get_eeprom_len,
818 .get_eeprom = dsa_slave_get_eeprom,
819 .set_eeprom = dsa_slave_set_eeprom,
820 .get_strings = dsa_slave_get_strings,
821 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
822 .get_sset_count = dsa_slave_get_sset_count,
823 .set_wol = dsa_slave_set_wol,
824 .get_wol = dsa_slave_get_wol,
825 .set_eee = dsa_slave_set_eee,
826 .get_eee = dsa_slave_get_eee,
829 static const struct net_device_ops dsa_slave_netdev_ops = {
830 .ndo_open = dsa_slave_open,
831 .ndo_stop = dsa_slave_close,
832 .ndo_start_xmit = dsa_slave_xmit,
833 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
834 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
835 .ndo_set_mac_address = dsa_slave_set_mac_address,
836 .ndo_fdb_add = switchdev_port_fdb_add,
837 .ndo_fdb_del = switchdev_port_fdb_del,
838 .ndo_fdb_dump = switchdev_port_fdb_dump,
839 .ndo_do_ioctl = dsa_slave_ioctl,
840 .ndo_get_iflink = dsa_slave_get_iflink,
841 #ifdef CONFIG_NET_POLL_CONTROLLER
842 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
843 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
844 .ndo_poll_controller = dsa_slave_poll_controller,
846 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
847 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
848 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
851 static const struct switchdev_ops dsa_slave_switchdev_ops = {
852 .switchdev_port_attr_get = dsa_slave_port_attr_get,
853 .switchdev_port_attr_set = dsa_slave_port_attr_set,
854 .switchdev_port_obj_add = dsa_slave_port_obj_add,
855 .switchdev_port_obj_del = dsa_slave_port_obj_del,
856 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
859 static struct device_type dsa_type = {
863 static void dsa_slave_adjust_link(struct net_device *dev)
865 struct dsa_slave_priv *p = netdev_priv(dev);
866 struct dsa_switch *ds = p->parent;
867 unsigned int status_changed = 0;
869 if (p->old_link != p->phy->link) {
871 p->old_link = p->phy->link;
874 if (p->old_duplex != p->phy->duplex) {
876 p->old_duplex = p->phy->duplex;
879 if (p->old_pause != p->phy->pause) {
881 p->old_pause = p->phy->pause;
884 if (ds->drv->adjust_link && status_changed)
885 ds->drv->adjust_link(ds, p->port, p->phy);
888 phy_print_status(p->phy);
891 static int dsa_slave_fixed_link_update(struct net_device *dev,
892 struct fixed_phy_status *status)
894 struct dsa_slave_priv *p;
895 struct dsa_switch *ds;
898 p = netdev_priv(dev);
900 if (ds->drv->fixed_link_update)
901 ds->drv->fixed_link_update(ds, p->port, status);
907 /* slave device setup *******************************************************/
908 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
909 struct net_device *slave_dev,
912 struct dsa_switch *ds = p->parent;
914 p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
916 netdev_err(slave_dev, "no phy at %d\n", addr);
920 /* Use already configured phy mode */
921 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
922 p->phy_interface = p->phy->interface;
923 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
929 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
930 struct net_device *slave_dev)
932 struct dsa_switch *ds = p->parent;
933 struct dsa_chip_data *cd = ds->pd;
934 struct device_node *phy_dn, *port_dn;
935 bool phy_is_fixed = false;
939 port_dn = cd->port_dn[p->port];
940 mode = of_get_phy_mode(port_dn);
942 mode = PHY_INTERFACE_MODE_NA;
943 p->phy_interface = mode;
945 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
946 if (of_phy_is_fixed_link(port_dn)) {
947 /* In the case of a fixed PHY, the DT node associated
948 * to the fixed PHY is the Port DT node
950 ret = of_phy_register_fixed_link(port_dn);
952 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
959 if (ds->drv->get_phy_flags)
960 phy_flags = ds->drv->get_phy_flags(ds, p->port);
963 int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
965 /* If this PHY address is part of phys_mii_mask, which means
966 * that we need to divert reads and writes to/from it, then we
967 * want to bind this device using the slave MII bus created by
968 * DSA to make that happen.
970 if (!phy_is_fixed && phy_id >= 0 &&
971 (ds->phys_mii_mask & (1 << phy_id))) {
972 ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
974 netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
978 p->phy = of_phy_connect(slave_dev, phy_dn,
979 dsa_slave_adjust_link,
985 if (p->phy && phy_is_fixed)
986 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
988 /* We could not connect to a designated PHY, so use the switch internal
992 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
994 netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
999 phy_attached_info(p->phy);
1004 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1005 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1006 struct netdev_queue *txq,
1009 lockdep_set_class(&txq->_xmit_lock,
1010 &dsa_slave_netdev_xmit_lock_key);
1013 int dsa_slave_suspend(struct net_device *slave_dev)
1015 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1022 phy_suspend(p->phy);
1028 int dsa_slave_resume(struct net_device *slave_dev)
1030 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1032 netif_device_attach(slave_dev);
1042 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
1043 int port, char *name)
1045 struct net_device *master = ds->dst->master_netdev;
1046 struct net_device *slave_dev;
1047 struct dsa_slave_priv *p;
1050 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1051 NET_NAME_UNKNOWN, ether_setup);
1052 if (slave_dev == NULL)
1055 slave_dev->features = master->vlan_features;
1056 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1057 eth_hw_addr_inherit(slave_dev, master);
1058 slave_dev->priv_flags |= IFF_NO_QUEUE;
1059 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1060 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1061 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1063 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1066 SET_NETDEV_DEV(slave_dev, parent);
1067 slave_dev->dev.of_node = ds->pd->port_dn[port];
1068 slave_dev->vlan_features = master->vlan_features;
1070 p = netdev_priv(slave_dev);
1075 switch (ds->dst->tag_protocol) {
1076 #ifdef CONFIG_NET_DSA_TAG_DSA
1077 case DSA_TAG_PROTO_DSA:
1078 p->xmit = dsa_netdev_ops.xmit;
1081 #ifdef CONFIG_NET_DSA_TAG_EDSA
1082 case DSA_TAG_PROTO_EDSA:
1083 p->xmit = edsa_netdev_ops.xmit;
1086 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1087 case DSA_TAG_PROTO_TRAILER:
1088 p->xmit = trailer_netdev_ops.xmit;
1091 #ifdef CONFIG_NET_DSA_TAG_BRCM
1092 case DSA_TAG_PROTO_BRCM:
1093 p->xmit = brcm_netdev_ops.xmit;
1097 p->xmit = dsa_slave_notag_xmit;
1105 ds->ports[port] = slave_dev;
1106 ret = register_netdev(slave_dev);
1108 netdev_err(master, "error %d registering interface %s\n",
1109 ret, slave_dev->name);
1110 ds->ports[port] = NULL;
1111 free_netdev(slave_dev);
1115 netif_carrier_off(slave_dev);
1117 ret = dsa_slave_phy_setup(p, slave_dev);
1119 netdev_err(master, "error %d setting up slave phy\n", ret);
1120 unregister_netdev(slave_dev);
1121 free_netdev(slave_dev);
1128 void dsa_slave_destroy(struct net_device *slave_dev)
1130 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1132 netif_carrier_off(slave_dev);
1134 phy_disconnect(p->phy);
1135 unregister_netdev(slave_dev);
1136 free_netdev(slave_dev);
1139 static bool dsa_slave_dev_check(struct net_device *dev)
1141 return dev->netdev_ops == &dsa_slave_netdev_ops;
1144 static int dsa_slave_port_upper_event(struct net_device *dev,
1145 unsigned long event, void *ptr)
1147 struct netdev_notifier_changeupper_info *info = ptr;
1148 struct net_device *upper = info->upper_dev;
1152 case NETDEV_CHANGEUPPER:
1153 if (netif_is_bridge_master(upper)) {
1155 err = dsa_slave_bridge_port_join(dev, upper);
1157 dsa_slave_bridge_port_leave(dev);
1163 return notifier_from_errno(err);
1166 static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
1170 case NETDEV_CHANGEUPPER:
1171 return dsa_slave_port_upper_event(dev, event, ptr);
1177 int dsa_slave_netdevice_event(struct notifier_block *unused,
1178 unsigned long event, void *ptr)
1180 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1182 if (dsa_slave_dev_check(dev))
1183 return dsa_slave_port_event(dev, event, ptr);