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 struct switchdev_obj *obj)
247 struct switchdev_obj_vlan *vlan = &obj->u.vlan;
248 struct dsa_slave_priv *p = netdev_priv(dev);
249 struct dsa_switch *ds = p->parent;
253 switch (obj->trans) {
254 case SWITCHDEV_TRANS_PREPARE:
255 if (!ds->drv->port_vlan_add || !ds->drv->port_pvid_set)
258 /* If the requested port doesn't belong to the same bridge as
259 * the VLAN members, fallback to software VLAN (hopefully).
261 err = dsa_bridge_check_vlan_range(ds, p->bridge_dev,
267 case SWITCHDEV_TRANS_COMMIT:
268 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
269 err = ds->drv->port_vlan_add(ds, p->port, vid,
271 BRIDGE_VLAN_INFO_UNTAGGED);
272 if (!err && vlan->flags & BRIDGE_VLAN_INFO_PVID)
273 err = ds->drv->port_pvid_set(ds, p->port, vid);
285 static int dsa_slave_port_vlan_del(struct net_device *dev,
286 struct switchdev_obj *obj)
288 struct switchdev_obj_vlan *vlan = &obj->u.vlan;
289 struct dsa_slave_priv *p = netdev_priv(dev);
290 struct dsa_switch *ds = p->parent;
294 if (!ds->drv->port_vlan_del)
297 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
298 err = ds->drv->port_vlan_del(ds, p->port, vid);
306 static int dsa_slave_port_vlan_dump(struct net_device *dev,
307 struct switchdev_obj *obj)
309 struct switchdev_obj_vlan *vlan = &obj->u.vlan;
310 struct dsa_slave_priv *p = netdev_priv(dev);
311 struct dsa_switch *ds = p->parent;
312 DECLARE_BITMAP(members, DSA_MAX_PORTS);
313 DECLARE_BITMAP(untagged, DSA_MAX_PORTS);
317 if (!ds->drv->vlan_getnext || !ds->drv->port_pvid_get)
320 err = ds->drv->port_pvid_get(ds, p->port, &pvid);
325 err = ds->drv->vlan_getnext(ds, &vid, members, untagged);
329 if (!test_bit(p->port, members))
332 memset(vlan, 0, sizeof(*vlan));
333 vlan->vid_begin = vlan->vid_end = vid;
336 vlan->flags |= BRIDGE_VLAN_INFO_PVID;
338 if (test_bit(p->port, untagged))
339 vlan->flags |= BRIDGE_VLAN_INFO_UNTAGGED;
341 err = obj->cb(dev, obj);
346 return err == -ENOENT ? 0 : err;
349 static int dsa_slave_port_fdb_add(struct net_device *dev,
350 struct switchdev_obj *obj)
352 struct switchdev_obj_fdb *fdb = &obj->u.fdb;
353 struct dsa_slave_priv *p = netdev_priv(dev);
354 struct dsa_switch *ds = p->parent;
355 int ret = -EOPNOTSUPP;
357 if (obj->trans == SWITCHDEV_TRANS_PREPARE)
358 ret = ds->drv->port_fdb_add ? 0 : -EOPNOTSUPP;
359 else if (obj->trans == SWITCHDEV_TRANS_COMMIT)
360 ret = ds->drv->port_fdb_add(ds, p->port, fdb->addr, fdb->vid);
365 static int dsa_slave_port_fdb_del(struct net_device *dev,
366 struct switchdev_obj *obj)
368 struct switchdev_obj_fdb *fdb = &obj->u.fdb;
369 struct dsa_slave_priv *p = netdev_priv(dev);
370 struct dsa_switch *ds = p->parent;
371 int ret = -EOPNOTSUPP;
373 if (ds->drv->port_fdb_del)
374 ret = ds->drv->port_fdb_del(ds, p->port, fdb->addr, fdb->vid);
379 static int dsa_slave_port_fdb_dump(struct net_device *dev,
380 struct switchdev_obj *obj)
382 struct dsa_slave_priv *p = netdev_priv(dev);
383 struct dsa_switch *ds = p->parent;
384 unsigned char addr[ETH_ALEN] = { 0 };
388 if (!ds->drv->port_fdb_getnext)
394 ret = ds->drv->port_fdb_getnext(ds, p->port, addr, &vid,
399 obj->u.fdb.addr = addr;
400 obj->u.fdb.vid = vid;
401 obj->u.fdb.ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
403 ret = obj->cb(dev, obj);
408 return ret == -ENOENT ? 0 : ret;
411 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
413 struct dsa_slave_priv *p = netdev_priv(dev);
416 return phy_mii_ioctl(p->phy, ifr, cmd);
421 /* Return a bitmask of all ports being currently bridged within a given bridge
422 * device. Note that on leave, the mask will still return the bitmask of ports
423 * currently bridged, prior to port removal, and this is exactly what we want.
425 static u32 dsa_slave_br_port_mask(struct dsa_switch *ds,
426 struct net_device *bridge)
428 struct dsa_slave_priv *p;
432 for (port = 0; port < DSA_MAX_PORTS; port++) {
433 if (!dsa_is_port_initialized(ds, port))
436 p = netdev_priv(ds->ports[port]);
438 if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT &&
439 p->bridge_dev == bridge)
446 static int dsa_slave_stp_update(struct net_device *dev, u8 state)
448 struct dsa_slave_priv *p = netdev_priv(dev);
449 struct dsa_switch *ds = p->parent;
450 int ret = -EOPNOTSUPP;
452 if (ds->drv->port_stp_update)
453 ret = ds->drv->port_stp_update(ds, p->port, state);
458 static int dsa_slave_port_attr_set(struct net_device *dev,
459 struct switchdev_attr *attr)
464 case SWITCHDEV_ATTR_PORT_STP_STATE:
465 if (attr->trans == SWITCHDEV_TRANS_COMMIT)
466 ret = dsa_slave_stp_update(dev, attr->u.stp_state);
476 static int dsa_slave_port_obj_add(struct net_device *dev,
477 struct switchdev_obj *obj)
481 /* For the prepare phase, ensure the full set of changes is feasable in
482 * one go in order to signal a failure properly. If an operation is not
483 * supported, return -EOPNOTSUPP.
487 case SWITCHDEV_OBJ_PORT_FDB:
488 err = dsa_slave_port_fdb_add(dev, obj);
490 case SWITCHDEV_OBJ_PORT_VLAN:
491 err = dsa_slave_port_vlan_add(dev, obj);
501 static int dsa_slave_port_obj_del(struct net_device *dev,
502 struct switchdev_obj *obj)
507 case SWITCHDEV_OBJ_PORT_FDB:
508 err = dsa_slave_port_fdb_del(dev, obj);
510 case SWITCHDEV_OBJ_PORT_VLAN:
511 err = dsa_slave_port_vlan_del(dev, obj);
521 static int dsa_slave_port_obj_dump(struct net_device *dev,
522 struct switchdev_obj *obj)
527 case SWITCHDEV_OBJ_PORT_FDB:
528 err = dsa_slave_port_fdb_dump(dev, obj);
530 case SWITCHDEV_OBJ_PORT_VLAN:
531 err = dsa_slave_port_vlan_dump(dev, obj);
541 static int dsa_slave_bridge_port_join(struct net_device *dev,
542 struct net_device *br)
544 struct dsa_slave_priv *p = netdev_priv(dev);
545 struct dsa_switch *ds = p->parent;
546 int ret = -EOPNOTSUPP;
550 if (ds->drv->port_join_bridge)
551 ret = ds->drv->port_join_bridge(ds, p->port,
552 dsa_slave_br_port_mask(ds, br));
557 static int dsa_slave_bridge_port_leave(struct net_device *dev)
559 struct dsa_slave_priv *p = netdev_priv(dev);
560 struct dsa_switch *ds = p->parent;
561 int ret = -EOPNOTSUPP;
564 if (ds->drv->port_leave_bridge)
565 ret = ds->drv->port_leave_bridge(ds, p->port,
566 dsa_slave_br_port_mask(ds, p->bridge_dev));
568 p->bridge_dev = NULL;
570 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
571 * so allow it to be in BR_STATE_FORWARDING to be kept functional
573 dsa_slave_stp_update(dev, BR_STATE_FORWARDING);
578 static int dsa_slave_port_attr_get(struct net_device *dev,
579 struct switchdev_attr *attr)
581 struct dsa_slave_priv *p = netdev_priv(dev);
582 struct dsa_switch *ds = p->parent;
585 case SWITCHDEV_ATTR_PORT_PARENT_ID:
586 attr->u.ppid.id_len = sizeof(ds->index);
587 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
596 static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
599 #ifdef CONFIG_NET_POLL_CONTROLLER
601 netpoll_send_skb(p->netpoll, skb);
608 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
610 struct dsa_slave_priv *p = netdev_priv(dev);
611 struct sk_buff *nskb;
613 dev->stats.tx_packets++;
614 dev->stats.tx_bytes += skb->len;
616 /* Transmit function may have to reallocate the original SKB */
617 nskb = p->xmit(skb, dev);
621 /* SKB for netpoll still need to be mangled with the protocol-specific
622 * tag to be successfully transmitted
624 if (unlikely(netpoll_tx_running(dev)))
625 return dsa_netpoll_send_skb(p, nskb);
627 /* Queue the SKB for transmission on the parent interface, but
628 * do not modify its EtherType
630 nskb->dev = p->parent->dst->master_netdev;
631 dev_queue_xmit(nskb);
636 static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb,
637 struct net_device *dev)
639 /* Just return the original SKB */
644 /* ethtool operations *******************************************************/
646 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
648 struct dsa_slave_priv *p = netdev_priv(dev);
652 if (p->phy != NULL) {
653 err = phy_read_status(p->phy);
655 err = phy_ethtool_gset(p->phy, cmd);
662 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
664 struct dsa_slave_priv *p = netdev_priv(dev);
667 return phy_ethtool_sset(p->phy, cmd);
672 static void dsa_slave_get_drvinfo(struct net_device *dev,
673 struct ethtool_drvinfo *drvinfo)
675 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
676 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
677 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
678 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
681 static int dsa_slave_get_regs_len(struct net_device *dev)
683 struct dsa_slave_priv *p = netdev_priv(dev);
684 struct dsa_switch *ds = p->parent;
686 if (ds->drv->get_regs_len)
687 return ds->drv->get_regs_len(ds, p->port);
693 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
695 struct dsa_slave_priv *p = netdev_priv(dev);
696 struct dsa_switch *ds = p->parent;
698 if (ds->drv->get_regs)
699 ds->drv->get_regs(ds, p->port, regs, _p);
702 static int dsa_slave_nway_reset(struct net_device *dev)
704 struct dsa_slave_priv *p = netdev_priv(dev);
707 return genphy_restart_aneg(p->phy);
712 static u32 dsa_slave_get_link(struct net_device *dev)
714 struct dsa_slave_priv *p = netdev_priv(dev);
716 if (p->phy != NULL) {
717 genphy_update_link(p->phy);
724 static int dsa_slave_get_eeprom_len(struct net_device *dev)
726 struct dsa_slave_priv *p = netdev_priv(dev);
727 struct dsa_switch *ds = p->parent;
729 if (ds->pd->eeprom_len)
730 return ds->pd->eeprom_len;
732 if (ds->drv->get_eeprom_len)
733 return ds->drv->get_eeprom_len(ds);
738 static int dsa_slave_get_eeprom(struct net_device *dev,
739 struct ethtool_eeprom *eeprom, u8 *data)
741 struct dsa_slave_priv *p = netdev_priv(dev);
742 struct dsa_switch *ds = p->parent;
744 if (ds->drv->get_eeprom)
745 return ds->drv->get_eeprom(ds, eeprom, data);
750 static int dsa_slave_set_eeprom(struct net_device *dev,
751 struct ethtool_eeprom *eeprom, u8 *data)
753 struct dsa_slave_priv *p = netdev_priv(dev);
754 struct dsa_switch *ds = p->parent;
756 if (ds->drv->set_eeprom)
757 return ds->drv->set_eeprom(ds, eeprom, data);
762 static void dsa_slave_get_strings(struct net_device *dev,
763 uint32_t stringset, uint8_t *data)
765 struct dsa_slave_priv *p = netdev_priv(dev);
766 struct dsa_switch *ds = p->parent;
768 if (stringset == ETH_SS_STATS) {
769 int len = ETH_GSTRING_LEN;
771 strncpy(data, "tx_packets", len);
772 strncpy(data + len, "tx_bytes", len);
773 strncpy(data + 2 * len, "rx_packets", len);
774 strncpy(data + 3 * len, "rx_bytes", len);
775 if (ds->drv->get_strings != NULL)
776 ds->drv->get_strings(ds, p->port, data + 4 * len);
780 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
781 struct ethtool_stats *stats,
784 struct dsa_slave_priv *p = netdev_priv(dev);
785 struct dsa_switch *ds = p->parent;
787 data[0] = p->dev->stats.tx_packets;
788 data[1] = p->dev->stats.tx_bytes;
789 data[2] = p->dev->stats.rx_packets;
790 data[3] = p->dev->stats.rx_bytes;
791 if (ds->drv->get_ethtool_stats != NULL)
792 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
795 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
797 struct dsa_slave_priv *p = netdev_priv(dev);
798 struct dsa_switch *ds = p->parent;
800 if (sset == ETH_SS_STATS) {
804 if (ds->drv->get_sset_count != NULL)
805 count += ds->drv->get_sset_count(ds);
813 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
815 struct dsa_slave_priv *p = netdev_priv(dev);
816 struct dsa_switch *ds = p->parent;
818 if (ds->drv->get_wol)
819 ds->drv->get_wol(ds, p->port, w);
822 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
824 struct dsa_slave_priv *p = netdev_priv(dev);
825 struct dsa_switch *ds = p->parent;
826 int ret = -EOPNOTSUPP;
828 if (ds->drv->set_wol)
829 ret = ds->drv->set_wol(ds, p->port, w);
834 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
836 struct dsa_slave_priv *p = netdev_priv(dev);
837 struct dsa_switch *ds = p->parent;
840 if (!ds->drv->set_eee)
843 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
848 ret = phy_ethtool_set_eee(p->phy, e);
853 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
855 struct dsa_slave_priv *p = netdev_priv(dev);
856 struct dsa_switch *ds = p->parent;
859 if (!ds->drv->get_eee)
862 ret = ds->drv->get_eee(ds, p->port, e);
867 ret = phy_ethtool_get_eee(p->phy, e);
872 #ifdef CONFIG_NET_POLL_CONTROLLER
873 static int dsa_slave_netpoll_setup(struct net_device *dev,
874 struct netpoll_info *ni)
876 struct dsa_slave_priv *p = netdev_priv(dev);
877 struct dsa_switch *ds = p->parent;
878 struct net_device *master = ds->dst->master_netdev;
879 struct netpoll *netpoll;
882 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
886 err = __netpoll_setup(netpoll, master);
892 p->netpoll = netpoll;
897 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
899 struct dsa_slave_priv *p = netdev_priv(dev);
900 struct netpoll *netpoll = p->netpoll;
907 __netpoll_free_async(netpoll);
910 static void dsa_slave_poll_controller(struct net_device *dev)
915 static const struct ethtool_ops dsa_slave_ethtool_ops = {
916 .get_settings = dsa_slave_get_settings,
917 .set_settings = dsa_slave_set_settings,
918 .get_drvinfo = dsa_slave_get_drvinfo,
919 .get_regs_len = dsa_slave_get_regs_len,
920 .get_regs = dsa_slave_get_regs,
921 .nway_reset = dsa_slave_nway_reset,
922 .get_link = dsa_slave_get_link,
923 .get_eeprom_len = dsa_slave_get_eeprom_len,
924 .get_eeprom = dsa_slave_get_eeprom,
925 .set_eeprom = dsa_slave_set_eeprom,
926 .get_strings = dsa_slave_get_strings,
927 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
928 .get_sset_count = dsa_slave_get_sset_count,
929 .set_wol = dsa_slave_set_wol,
930 .get_wol = dsa_slave_get_wol,
931 .set_eee = dsa_slave_set_eee,
932 .get_eee = dsa_slave_get_eee,
935 static const struct net_device_ops dsa_slave_netdev_ops = {
936 .ndo_open = dsa_slave_open,
937 .ndo_stop = dsa_slave_close,
938 .ndo_start_xmit = dsa_slave_xmit,
939 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
940 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
941 .ndo_set_mac_address = dsa_slave_set_mac_address,
942 .ndo_fdb_add = switchdev_port_fdb_add,
943 .ndo_fdb_del = switchdev_port_fdb_del,
944 .ndo_fdb_dump = switchdev_port_fdb_dump,
945 .ndo_do_ioctl = dsa_slave_ioctl,
946 .ndo_get_iflink = dsa_slave_get_iflink,
947 #ifdef CONFIG_NET_POLL_CONTROLLER
948 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
949 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
950 .ndo_poll_controller = dsa_slave_poll_controller,
952 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
953 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
954 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
957 static const struct switchdev_ops dsa_slave_switchdev_ops = {
958 .switchdev_port_attr_get = dsa_slave_port_attr_get,
959 .switchdev_port_attr_set = dsa_slave_port_attr_set,
960 .switchdev_port_obj_add = dsa_slave_port_obj_add,
961 .switchdev_port_obj_del = dsa_slave_port_obj_del,
962 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
965 static void dsa_slave_adjust_link(struct net_device *dev)
967 struct dsa_slave_priv *p = netdev_priv(dev);
968 struct dsa_switch *ds = p->parent;
969 unsigned int status_changed = 0;
971 if (p->old_link != p->phy->link) {
973 p->old_link = p->phy->link;
976 if (p->old_duplex != p->phy->duplex) {
978 p->old_duplex = p->phy->duplex;
981 if (p->old_pause != p->phy->pause) {
983 p->old_pause = p->phy->pause;
986 if (ds->drv->adjust_link && status_changed)
987 ds->drv->adjust_link(ds, p->port, p->phy);
990 phy_print_status(p->phy);
993 static int dsa_slave_fixed_link_update(struct net_device *dev,
994 struct fixed_phy_status *status)
996 struct dsa_slave_priv *p = netdev_priv(dev);
997 struct dsa_switch *ds = p->parent;
999 if (ds->drv->fixed_link_update)
1000 ds->drv->fixed_link_update(ds, p->port, status);
1005 /* slave device setup *******************************************************/
1006 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
1007 struct net_device *slave_dev,
1010 struct dsa_switch *ds = p->parent;
1012 p->phy = ds->slave_mii_bus->phy_map[addr];
1016 /* Use already configured phy mode */
1017 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
1018 p->phy_interface = p->phy->interface;
1019 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
1025 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
1026 struct net_device *slave_dev)
1028 struct dsa_switch *ds = p->parent;
1029 struct dsa_chip_data *cd = ds->pd;
1030 struct device_node *phy_dn, *port_dn;
1031 bool phy_is_fixed = false;
1035 port_dn = cd->port_dn[p->port];
1036 mode = of_get_phy_mode(port_dn);
1038 mode = PHY_INTERFACE_MODE_NA;
1039 p->phy_interface = mode;
1041 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
1042 if (of_phy_is_fixed_link(port_dn)) {
1043 /* In the case of a fixed PHY, the DT node associated
1044 * to the fixed PHY is the Port DT node
1046 ret = of_phy_register_fixed_link(port_dn);
1048 netdev_err(slave_dev, "failed to register fixed PHY\n");
1051 phy_is_fixed = true;
1055 if (ds->drv->get_phy_flags)
1056 phy_flags = ds->drv->get_phy_flags(ds, p->port);
1059 ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
1060 /* If this PHY address is part of phys_mii_mask, which means
1061 * that we need to divert reads and writes to/from it, then we
1062 * want to bind this device using the slave MII bus created by
1063 * DSA to make that happen.
1065 if (!phy_is_fixed && ret >= 0 &&
1066 (ds->phys_mii_mask & (1 << ret))) {
1067 ret = dsa_slave_phy_connect(p, slave_dev, ret);
1071 p->phy = of_phy_connect(slave_dev, phy_dn,
1072 dsa_slave_adjust_link,
1078 if (p->phy && phy_is_fixed)
1079 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
1081 /* We could not connect to a designated PHY, so use the switch internal
1085 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
1089 netdev_info(slave_dev, "attached PHY at address %d [%s]\n",
1090 p->phy->addr, p->phy->drv->name);
1096 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1097 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1098 struct netdev_queue *txq,
1101 lockdep_set_class(&txq->_xmit_lock,
1102 &dsa_slave_netdev_xmit_lock_key);
1105 int dsa_slave_suspend(struct net_device *slave_dev)
1107 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1114 phy_suspend(p->phy);
1120 int dsa_slave_resume(struct net_device *slave_dev)
1122 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1124 netif_device_attach(slave_dev);
1134 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
1135 int port, char *name)
1137 struct net_device *master = ds->dst->master_netdev;
1138 struct net_device *slave_dev;
1139 struct dsa_slave_priv *p;
1142 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1143 NET_NAME_UNKNOWN, ether_setup);
1144 if (slave_dev == NULL)
1147 slave_dev->features = master->vlan_features;
1148 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1149 eth_hw_addr_inherit(slave_dev, master);
1150 slave_dev->priv_flags |= IFF_NO_QUEUE;
1151 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1152 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1154 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1157 SET_NETDEV_DEV(slave_dev, parent);
1158 slave_dev->dev.of_node = ds->pd->port_dn[port];
1159 slave_dev->vlan_features = master->vlan_features;
1161 p = netdev_priv(slave_dev);
1166 switch (ds->dst->tag_protocol) {
1167 #ifdef CONFIG_NET_DSA_TAG_DSA
1168 case DSA_TAG_PROTO_DSA:
1169 p->xmit = dsa_netdev_ops.xmit;
1172 #ifdef CONFIG_NET_DSA_TAG_EDSA
1173 case DSA_TAG_PROTO_EDSA:
1174 p->xmit = edsa_netdev_ops.xmit;
1177 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1178 case DSA_TAG_PROTO_TRAILER:
1179 p->xmit = trailer_netdev_ops.xmit;
1182 #ifdef CONFIG_NET_DSA_TAG_BRCM
1183 case DSA_TAG_PROTO_BRCM:
1184 p->xmit = brcm_netdev_ops.xmit;
1188 p->xmit = dsa_slave_notag_xmit;
1196 ret = dsa_slave_phy_setup(p, slave_dev);
1198 free_netdev(slave_dev);
1202 ds->ports[port] = slave_dev;
1203 ret = register_netdev(slave_dev);
1205 netdev_err(master, "error %d registering interface %s\n",
1206 ret, slave_dev->name);
1207 phy_disconnect(p->phy);
1208 ds->ports[port] = NULL;
1209 free_netdev(slave_dev);
1213 netif_carrier_off(slave_dev);
1218 static bool dsa_slave_dev_check(struct net_device *dev)
1220 return dev->netdev_ops == &dsa_slave_netdev_ops;
1223 static int dsa_slave_master_changed(struct net_device *dev)
1225 struct net_device *master = netdev_master_upper_dev_get(dev);
1226 struct dsa_slave_priv *p = netdev_priv(dev);
1229 if (master && master->rtnl_link_ops &&
1230 !strcmp(master->rtnl_link_ops->kind, "bridge"))
1231 err = dsa_slave_bridge_port_join(dev, master);
1232 else if (dsa_port_is_bridged(p))
1233 err = dsa_slave_bridge_port_leave(dev);
1238 int dsa_slave_netdevice_event(struct notifier_block *unused,
1239 unsigned long event, void *ptr)
1241 struct net_device *dev;
1245 case NETDEV_CHANGEUPPER:
1246 dev = netdev_notifier_info_to_dev(ptr);
1247 if (!dsa_slave_dev_check(dev))
1250 err = dsa_slave_master_changed(dev);
1252 netdev_warn(dev, "failed to reflect master change\n");