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;
211 if (switchdev_trans_ph_prepare(trans)) {
212 if (!ds->drv->port_vlan_prepare || !ds->drv->port_vlan_add)
215 return ds->drv->port_vlan_prepare(ds, p->port, vlan, trans);
218 ds->drv->port_vlan_add(ds, p->port, vlan, trans);
223 static int dsa_slave_port_vlan_del(struct net_device *dev,
224 const struct switchdev_obj_port_vlan *vlan)
226 struct dsa_slave_priv *p = netdev_priv(dev);
227 struct dsa_switch *ds = p->parent;
229 if (!ds->drv->port_vlan_del)
232 return ds->drv->port_vlan_del(ds, p->port, vlan);
235 static int dsa_slave_port_vlan_dump(struct net_device *dev,
236 struct switchdev_obj_port_vlan *vlan,
237 switchdev_obj_dump_cb_t *cb)
239 struct dsa_slave_priv *p = netdev_priv(dev);
240 struct dsa_switch *ds = p->parent;
242 if (ds->drv->port_vlan_dump)
243 return ds->drv->port_vlan_dump(ds, p->port, vlan, cb);
248 static int dsa_slave_port_fdb_add(struct net_device *dev,
249 const struct switchdev_obj_port_fdb *fdb,
250 struct switchdev_trans *trans)
252 struct dsa_slave_priv *p = netdev_priv(dev);
253 struct dsa_switch *ds = p->parent;
255 if (switchdev_trans_ph_prepare(trans)) {
256 if (!ds->drv->port_fdb_prepare || !ds->drv->port_fdb_add)
259 return ds->drv->port_fdb_prepare(ds, p->port, fdb, trans);
262 ds->drv->port_fdb_add(ds, p->port, fdb, trans);
267 static int dsa_slave_port_fdb_del(struct net_device *dev,
268 const struct switchdev_obj_port_fdb *fdb)
270 struct dsa_slave_priv *p = netdev_priv(dev);
271 struct dsa_switch *ds = p->parent;
272 int ret = -EOPNOTSUPP;
274 if (ds->drv->port_fdb_del)
275 ret = ds->drv->port_fdb_del(ds, p->port, fdb);
280 static int dsa_slave_port_fdb_dump(struct net_device *dev,
281 struct switchdev_obj_port_fdb *fdb,
282 switchdev_obj_dump_cb_t *cb)
284 struct dsa_slave_priv *p = netdev_priv(dev);
285 struct dsa_switch *ds = p->parent;
287 if (ds->drv->port_fdb_dump)
288 return ds->drv->port_fdb_dump(ds, p->port, fdb, cb);
293 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
295 struct dsa_slave_priv *p = netdev_priv(dev);
298 return phy_mii_ioctl(p->phy, ifr, cmd);
303 static int dsa_slave_stp_state_set(struct net_device *dev,
304 const struct switchdev_attr *attr,
305 struct switchdev_trans *trans)
307 struct dsa_slave_priv *p = netdev_priv(dev);
308 struct dsa_switch *ds = p->parent;
310 if (switchdev_trans_ph_prepare(trans))
311 return ds->drv->port_stp_state_set ? 0 : -EOPNOTSUPP;
313 ds->drv->port_stp_state_set(ds, p->port, attr->u.stp_state);
318 static int dsa_slave_vlan_filtering(struct net_device *dev,
319 const struct switchdev_attr *attr,
320 struct switchdev_trans *trans)
322 struct dsa_slave_priv *p = netdev_priv(dev);
323 struct dsa_switch *ds = p->parent;
325 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
326 if (switchdev_trans_ph_prepare(trans))
329 if (ds->drv->port_vlan_filtering)
330 return ds->drv->port_vlan_filtering(ds, p->port,
331 attr->u.vlan_filtering);
336 static int dsa_slave_port_attr_set(struct net_device *dev,
337 const struct switchdev_attr *attr,
338 struct switchdev_trans *trans)
343 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
344 ret = dsa_slave_stp_state_set(dev, attr, trans);
346 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
347 ret = dsa_slave_vlan_filtering(dev, attr, trans);
357 static int dsa_slave_port_obj_add(struct net_device *dev,
358 const struct switchdev_obj *obj,
359 struct switchdev_trans *trans)
363 /* For the prepare phase, ensure the full set of changes is feasable in
364 * one go in order to signal a failure properly. If an operation is not
365 * supported, return -EOPNOTSUPP.
369 case SWITCHDEV_OBJ_ID_PORT_FDB:
370 err = dsa_slave_port_fdb_add(dev,
371 SWITCHDEV_OBJ_PORT_FDB(obj),
374 case SWITCHDEV_OBJ_ID_PORT_VLAN:
375 err = dsa_slave_port_vlan_add(dev,
376 SWITCHDEV_OBJ_PORT_VLAN(obj),
387 static int dsa_slave_port_obj_del(struct net_device *dev,
388 const struct switchdev_obj *obj)
393 case SWITCHDEV_OBJ_ID_PORT_FDB:
394 err = dsa_slave_port_fdb_del(dev,
395 SWITCHDEV_OBJ_PORT_FDB(obj));
397 case SWITCHDEV_OBJ_ID_PORT_VLAN:
398 err = dsa_slave_port_vlan_del(dev,
399 SWITCHDEV_OBJ_PORT_VLAN(obj));
409 static int dsa_slave_port_obj_dump(struct net_device *dev,
410 struct switchdev_obj *obj,
411 switchdev_obj_dump_cb_t *cb)
416 case SWITCHDEV_OBJ_ID_PORT_FDB:
417 err = dsa_slave_port_fdb_dump(dev,
418 SWITCHDEV_OBJ_PORT_FDB(obj),
421 case SWITCHDEV_OBJ_ID_PORT_VLAN:
422 err = dsa_slave_port_vlan_dump(dev,
423 SWITCHDEV_OBJ_PORT_VLAN(obj),
434 static int dsa_slave_bridge_port_join(struct net_device *dev,
435 struct net_device *br)
437 struct dsa_slave_priv *p = netdev_priv(dev);
438 struct dsa_switch *ds = p->parent;
439 int ret = -EOPNOTSUPP;
443 if (ds->drv->port_bridge_join)
444 ret = ds->drv->port_bridge_join(ds, p->port, br);
446 return ret == -EOPNOTSUPP ? 0 : ret;
449 static void dsa_slave_bridge_port_leave(struct net_device *dev)
451 struct dsa_slave_priv *p = netdev_priv(dev);
452 struct dsa_switch *ds = p->parent;
455 if (ds->drv->port_bridge_leave)
456 ds->drv->port_bridge_leave(ds, p->port);
458 p->bridge_dev = NULL;
460 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
461 * so allow it to be in BR_STATE_FORWARDING to be kept functional
463 if (ds->drv->port_stp_state_set)
464 ds->drv->port_stp_state_set(ds, p->port, BR_STATE_FORWARDING);
467 static int dsa_slave_port_attr_get(struct net_device *dev,
468 struct switchdev_attr *attr)
470 struct dsa_slave_priv *p = netdev_priv(dev);
471 struct dsa_switch *ds = p->parent;
474 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
475 attr->u.ppid.id_len = sizeof(ds->index);
476 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
485 static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
488 #ifdef CONFIG_NET_POLL_CONTROLLER
490 netpoll_send_skb(p->netpoll, skb);
497 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
499 struct dsa_slave_priv *p = netdev_priv(dev);
500 struct sk_buff *nskb;
502 dev->stats.tx_packets++;
503 dev->stats.tx_bytes += skb->len;
505 /* Transmit function may have to reallocate the original SKB */
506 nskb = p->xmit(skb, dev);
510 /* SKB for netpoll still need to be mangled with the protocol-specific
511 * tag to be successfully transmitted
513 if (unlikely(netpoll_tx_running(dev)))
514 return dsa_netpoll_send_skb(p, nskb);
516 /* Queue the SKB for transmission on the parent interface, but
517 * do not modify its EtherType
519 nskb->dev = p->parent->dst->master_netdev;
520 dev_queue_xmit(nskb);
525 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
526 struct net_device *dev)
528 /* Just return the original SKB */
533 /* ethtool operations *******************************************************/
535 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
537 struct dsa_slave_priv *p = netdev_priv(dev);
541 if (p->phy != NULL) {
542 err = phy_read_status(p->phy);
544 err = phy_ethtool_gset(p->phy, cmd);
551 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
553 struct dsa_slave_priv *p = netdev_priv(dev);
556 return phy_ethtool_sset(p->phy, cmd);
561 static void dsa_slave_get_drvinfo(struct net_device *dev,
562 struct ethtool_drvinfo *drvinfo)
564 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
565 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
566 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
567 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
570 static int dsa_slave_get_regs_len(struct net_device *dev)
572 struct dsa_slave_priv *p = netdev_priv(dev);
573 struct dsa_switch *ds = p->parent;
575 if (ds->drv->get_regs_len)
576 return ds->drv->get_regs_len(ds, p->port);
582 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
584 struct dsa_slave_priv *p = netdev_priv(dev);
585 struct dsa_switch *ds = p->parent;
587 if (ds->drv->get_regs)
588 ds->drv->get_regs(ds, p->port, regs, _p);
591 static int dsa_slave_nway_reset(struct net_device *dev)
593 struct dsa_slave_priv *p = netdev_priv(dev);
596 return genphy_restart_aneg(p->phy);
601 static u32 dsa_slave_get_link(struct net_device *dev)
603 struct dsa_slave_priv *p = netdev_priv(dev);
605 if (p->phy != NULL) {
606 genphy_update_link(p->phy);
613 static int dsa_slave_get_eeprom_len(struct net_device *dev)
615 struct dsa_slave_priv *p = netdev_priv(dev);
616 struct dsa_switch *ds = p->parent;
618 if (ds->pd->eeprom_len)
619 return ds->pd->eeprom_len;
621 if (ds->drv->get_eeprom_len)
622 return ds->drv->get_eeprom_len(ds);
627 static int dsa_slave_get_eeprom(struct net_device *dev,
628 struct ethtool_eeprom *eeprom, u8 *data)
630 struct dsa_slave_priv *p = netdev_priv(dev);
631 struct dsa_switch *ds = p->parent;
633 if (ds->drv->get_eeprom)
634 return ds->drv->get_eeprom(ds, eeprom, data);
639 static int dsa_slave_set_eeprom(struct net_device *dev,
640 struct ethtool_eeprom *eeprom, u8 *data)
642 struct dsa_slave_priv *p = netdev_priv(dev);
643 struct dsa_switch *ds = p->parent;
645 if (ds->drv->set_eeprom)
646 return ds->drv->set_eeprom(ds, eeprom, data);
651 static void dsa_slave_get_strings(struct net_device *dev,
652 uint32_t stringset, uint8_t *data)
654 struct dsa_slave_priv *p = netdev_priv(dev);
655 struct dsa_switch *ds = p->parent;
657 if (stringset == ETH_SS_STATS) {
658 int len = ETH_GSTRING_LEN;
660 strncpy(data, "tx_packets", len);
661 strncpy(data + len, "tx_bytes", len);
662 strncpy(data + 2 * len, "rx_packets", len);
663 strncpy(data + 3 * len, "rx_bytes", len);
664 if (ds->drv->get_strings != NULL)
665 ds->drv->get_strings(ds, p->port, data + 4 * len);
669 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
670 struct ethtool_stats *stats,
673 struct dsa_slave_priv *p = netdev_priv(dev);
674 struct dsa_switch *ds = p->parent;
676 data[0] = p->dev->stats.tx_packets;
677 data[1] = p->dev->stats.tx_bytes;
678 data[2] = p->dev->stats.rx_packets;
679 data[3] = p->dev->stats.rx_bytes;
680 if (ds->drv->get_ethtool_stats != NULL)
681 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
684 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
686 struct dsa_slave_priv *p = netdev_priv(dev);
687 struct dsa_switch *ds = p->parent;
689 if (sset == ETH_SS_STATS) {
693 if (ds->drv->get_sset_count != NULL)
694 count += ds->drv->get_sset_count(ds);
702 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
704 struct dsa_slave_priv *p = netdev_priv(dev);
705 struct dsa_switch *ds = p->parent;
707 if (ds->drv->get_wol)
708 ds->drv->get_wol(ds, p->port, w);
711 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
713 struct dsa_slave_priv *p = netdev_priv(dev);
714 struct dsa_switch *ds = p->parent;
715 int ret = -EOPNOTSUPP;
717 if (ds->drv->set_wol)
718 ret = ds->drv->set_wol(ds, p->port, w);
723 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
725 struct dsa_slave_priv *p = netdev_priv(dev);
726 struct dsa_switch *ds = p->parent;
729 if (!ds->drv->set_eee)
732 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
737 ret = phy_ethtool_set_eee(p->phy, e);
742 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
744 struct dsa_slave_priv *p = netdev_priv(dev);
745 struct dsa_switch *ds = p->parent;
748 if (!ds->drv->get_eee)
751 ret = ds->drv->get_eee(ds, p->port, e);
756 ret = phy_ethtool_get_eee(p->phy, e);
761 #ifdef CONFIG_NET_POLL_CONTROLLER
762 static int dsa_slave_netpoll_setup(struct net_device *dev,
763 struct netpoll_info *ni)
765 struct dsa_slave_priv *p = netdev_priv(dev);
766 struct dsa_switch *ds = p->parent;
767 struct net_device *master = ds->dst->master_netdev;
768 struct netpoll *netpoll;
771 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
775 err = __netpoll_setup(netpoll, master);
781 p->netpoll = netpoll;
786 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
788 struct dsa_slave_priv *p = netdev_priv(dev);
789 struct netpoll *netpoll = p->netpoll;
796 __netpoll_free_async(netpoll);
799 static void dsa_slave_poll_controller(struct net_device *dev)
804 static const struct ethtool_ops dsa_slave_ethtool_ops = {
805 .get_settings = dsa_slave_get_settings,
806 .set_settings = dsa_slave_set_settings,
807 .get_drvinfo = dsa_slave_get_drvinfo,
808 .get_regs_len = dsa_slave_get_regs_len,
809 .get_regs = dsa_slave_get_regs,
810 .nway_reset = dsa_slave_nway_reset,
811 .get_link = dsa_slave_get_link,
812 .get_eeprom_len = dsa_slave_get_eeprom_len,
813 .get_eeprom = dsa_slave_get_eeprom,
814 .set_eeprom = dsa_slave_set_eeprom,
815 .get_strings = dsa_slave_get_strings,
816 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
817 .get_sset_count = dsa_slave_get_sset_count,
818 .set_wol = dsa_slave_set_wol,
819 .get_wol = dsa_slave_get_wol,
820 .set_eee = dsa_slave_set_eee,
821 .get_eee = dsa_slave_get_eee,
824 static const struct net_device_ops dsa_slave_netdev_ops = {
825 .ndo_open = dsa_slave_open,
826 .ndo_stop = dsa_slave_close,
827 .ndo_start_xmit = dsa_slave_xmit,
828 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
829 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
830 .ndo_set_mac_address = dsa_slave_set_mac_address,
831 .ndo_fdb_add = switchdev_port_fdb_add,
832 .ndo_fdb_del = switchdev_port_fdb_del,
833 .ndo_fdb_dump = switchdev_port_fdb_dump,
834 .ndo_do_ioctl = dsa_slave_ioctl,
835 .ndo_get_iflink = dsa_slave_get_iflink,
836 #ifdef CONFIG_NET_POLL_CONTROLLER
837 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
838 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
839 .ndo_poll_controller = dsa_slave_poll_controller,
841 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
842 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
843 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
846 static const struct switchdev_ops dsa_slave_switchdev_ops = {
847 .switchdev_port_attr_get = dsa_slave_port_attr_get,
848 .switchdev_port_attr_set = dsa_slave_port_attr_set,
849 .switchdev_port_obj_add = dsa_slave_port_obj_add,
850 .switchdev_port_obj_del = dsa_slave_port_obj_del,
851 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
854 static struct device_type dsa_type = {
858 static void dsa_slave_adjust_link(struct net_device *dev)
860 struct dsa_slave_priv *p = netdev_priv(dev);
861 struct dsa_switch *ds = p->parent;
862 unsigned int status_changed = 0;
864 if (p->old_link != p->phy->link) {
866 p->old_link = p->phy->link;
869 if (p->old_duplex != p->phy->duplex) {
871 p->old_duplex = p->phy->duplex;
874 if (p->old_pause != p->phy->pause) {
876 p->old_pause = p->phy->pause;
879 if (ds->drv->adjust_link && status_changed)
880 ds->drv->adjust_link(ds, p->port, p->phy);
883 phy_print_status(p->phy);
886 static int dsa_slave_fixed_link_update(struct net_device *dev,
887 struct fixed_phy_status *status)
889 struct dsa_slave_priv *p;
890 struct dsa_switch *ds;
893 p = netdev_priv(dev);
895 if (ds->drv->fixed_link_update)
896 ds->drv->fixed_link_update(ds, p->port, status);
902 /* slave device setup *******************************************************/
903 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
904 struct net_device *slave_dev,
907 struct dsa_switch *ds = p->parent;
909 p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
911 netdev_err(slave_dev, "no phy at %d\n", addr);
915 /* Use already configured phy mode */
916 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
917 p->phy_interface = p->phy->interface;
918 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
924 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
925 struct net_device *slave_dev)
927 struct dsa_switch *ds = p->parent;
928 struct dsa_chip_data *cd = ds->pd;
929 struct device_node *phy_dn, *port_dn;
930 bool phy_is_fixed = false;
934 port_dn = cd->port_dn[p->port];
935 mode = of_get_phy_mode(port_dn);
937 mode = PHY_INTERFACE_MODE_NA;
938 p->phy_interface = mode;
940 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
941 if (of_phy_is_fixed_link(port_dn)) {
942 /* In the case of a fixed PHY, the DT node associated
943 * to the fixed PHY is the Port DT node
945 ret = of_phy_register_fixed_link(port_dn);
947 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
954 if (ds->drv->get_phy_flags)
955 phy_flags = ds->drv->get_phy_flags(ds, p->port);
958 int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
960 /* If this PHY address is part of phys_mii_mask, which means
961 * that we need to divert reads and writes to/from it, then we
962 * want to bind this device using the slave MII bus created by
963 * DSA to make that happen.
965 if (!phy_is_fixed && phy_id >= 0 &&
966 (ds->phys_mii_mask & (1 << phy_id))) {
967 ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
969 netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
973 p->phy = of_phy_connect(slave_dev, phy_dn,
974 dsa_slave_adjust_link,
980 if (p->phy && phy_is_fixed)
981 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
983 /* We could not connect to a designated PHY, so use the switch internal
987 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
989 netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
994 phy_attached_info(p->phy);
999 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1000 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1001 struct netdev_queue *txq,
1004 lockdep_set_class(&txq->_xmit_lock,
1005 &dsa_slave_netdev_xmit_lock_key);
1008 int dsa_slave_suspend(struct net_device *slave_dev)
1010 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1017 phy_suspend(p->phy);
1023 int dsa_slave_resume(struct net_device *slave_dev)
1025 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1027 netif_device_attach(slave_dev);
1037 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
1038 int port, char *name)
1040 struct net_device *master = ds->dst->master_netdev;
1041 struct net_device *slave_dev;
1042 struct dsa_slave_priv *p;
1045 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1046 NET_NAME_UNKNOWN, ether_setup);
1047 if (slave_dev == NULL)
1050 slave_dev->features = master->vlan_features;
1051 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1052 eth_hw_addr_inherit(slave_dev, master);
1053 slave_dev->priv_flags |= IFF_NO_QUEUE;
1054 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1055 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1056 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1058 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1061 SET_NETDEV_DEV(slave_dev, parent);
1062 slave_dev->dev.of_node = ds->pd->port_dn[port];
1063 slave_dev->vlan_features = master->vlan_features;
1065 p = netdev_priv(slave_dev);
1070 switch (ds->dst->tag_protocol) {
1071 #ifdef CONFIG_NET_DSA_TAG_DSA
1072 case DSA_TAG_PROTO_DSA:
1073 p->xmit = dsa_netdev_ops.xmit;
1076 #ifdef CONFIG_NET_DSA_TAG_EDSA
1077 case DSA_TAG_PROTO_EDSA:
1078 p->xmit = edsa_netdev_ops.xmit;
1081 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1082 case DSA_TAG_PROTO_TRAILER:
1083 p->xmit = trailer_netdev_ops.xmit;
1086 #ifdef CONFIG_NET_DSA_TAG_BRCM
1087 case DSA_TAG_PROTO_BRCM:
1088 p->xmit = brcm_netdev_ops.xmit;
1092 p->xmit = dsa_slave_notag_xmit;
1100 ds->ports[port] = slave_dev;
1101 ret = register_netdev(slave_dev);
1103 netdev_err(master, "error %d registering interface %s\n",
1104 ret, slave_dev->name);
1105 ds->ports[port] = NULL;
1106 free_netdev(slave_dev);
1110 netif_carrier_off(slave_dev);
1112 ret = dsa_slave_phy_setup(p, slave_dev);
1114 netdev_err(master, "error %d setting up slave phy\n", ret);
1115 unregister_netdev(slave_dev);
1116 free_netdev(slave_dev);
1123 void dsa_slave_destroy(struct net_device *slave_dev)
1125 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1127 netif_carrier_off(slave_dev);
1129 phy_disconnect(p->phy);
1130 unregister_netdev(slave_dev);
1131 free_netdev(slave_dev);
1134 static bool dsa_slave_dev_check(struct net_device *dev)
1136 return dev->netdev_ops == &dsa_slave_netdev_ops;
1139 static int dsa_slave_port_upper_event(struct net_device *dev,
1140 unsigned long event, void *ptr)
1142 struct netdev_notifier_changeupper_info *info = ptr;
1143 struct net_device *upper = info->upper_dev;
1147 case NETDEV_CHANGEUPPER:
1148 if (netif_is_bridge_master(upper)) {
1150 err = dsa_slave_bridge_port_join(dev, upper);
1152 dsa_slave_bridge_port_leave(dev);
1158 return notifier_from_errno(err);
1161 static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
1165 case NETDEV_CHANGEUPPER:
1166 return dsa_slave_port_upper_event(dev, event, ptr);
1172 int dsa_slave_netdevice_event(struct notifier_block *unused,
1173 unsigned long event, void *ptr)
1175 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1177 if (dsa_slave_dev_check(dev))
1178 return dsa_slave_port_event(dev, event, ptr);