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>
23 /* slave mii_bus handling ***************************************************/
24 static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
26 struct dsa_switch *ds = bus->priv;
28 if (ds->phys_mii_mask & (1 << addr))
29 return ds->drv->phy_read(ds, addr, reg);
34 static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
36 struct dsa_switch *ds = bus->priv;
38 if (ds->phys_mii_mask & (1 << addr))
39 return ds->drv->phy_write(ds, addr, reg, val);
44 void dsa_slave_mii_bus_init(struct dsa_switch *ds)
46 ds->slave_mii_bus->priv = (void *)ds;
47 ds->slave_mii_bus->name = "dsa slave smi";
48 ds->slave_mii_bus->read = dsa_slave_phy_read;
49 ds->slave_mii_bus->write = dsa_slave_phy_write;
50 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d:%.2x",
51 ds->index, ds->pd->sw_addr);
52 ds->slave_mii_bus->parent = ds->master_dev;
53 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
57 /* slave device handling ****************************************************/
58 static int dsa_slave_init(struct net_device *dev)
60 struct dsa_slave_priv *p = netdev_priv(dev);
62 dev->iflink = 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_update)
108 ds->drv->port_stp_update(ds, p->port, stp_state);
116 if (dev->flags & IFF_PROMISC)
117 dev_set_promiscuity(master, 0);
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_update)
151 ds->drv->port_stp_update(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_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
205 struct net_device *dev,
206 const unsigned char *addr, u16 vid, u16 nlm_flags)
208 struct dsa_slave_priv *p = netdev_priv(dev);
209 struct dsa_switch *ds = p->parent;
210 int ret = -EOPNOTSUPP;
212 if (ds->drv->fdb_add)
213 ret = ds->drv->fdb_add(ds, p->port, addr, vid);
218 static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
219 struct net_device *dev,
220 const unsigned char *addr, u16 vid)
222 struct dsa_slave_priv *p = netdev_priv(dev);
223 struct dsa_switch *ds = p->parent;
224 int ret = -EOPNOTSUPP;
226 if (ds->drv->fdb_del)
227 ret = ds->drv->fdb_del(ds, p->port, addr, vid);
232 static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb,
233 const unsigned char *addr, u16 vid,
235 u32 portid, u32 seq, int type,
238 struct nlmsghdr *nlh;
241 nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
245 ndm = nlmsg_data(nlh);
246 ndm->ndm_family = AF_BRIDGE;
249 ndm->ndm_flags = NTF_EXT_LEARNED;
251 ndm->ndm_ifindex = dev->ifindex;
252 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
254 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
255 goto nla_put_failure;
257 if (vid && nla_put_u16(skb, NDA_VLAN, vid))
258 goto nla_put_failure;
264 nlmsg_cancel(skb, nlh);
268 /* Dump information about entries, in response to GETNEIGH */
269 static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
270 struct net_device *dev,
271 struct net_device *filter_dev, int idx)
273 struct dsa_slave_priv *p = netdev_priv(dev);
274 struct dsa_switch *ds = p->parent;
275 unsigned char addr[ETH_ALEN] = { 0 };
278 if (!ds->drv->fdb_getnext)
284 ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static);
288 if (idx < cb->args[0])
291 ret = dsa_slave_fill_info(dev, skb, addr, 0,
293 NETLINK_CB(cb->skb).portid,
295 RTM_NEWNEIGH, NLM_F_MULTI);
303 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
305 struct dsa_slave_priv *p = netdev_priv(dev);
308 return phy_mii_ioctl(p->phy, ifr, cmd);
313 /* Return a bitmask of all ports being currently bridged within a given bridge
314 * device. Note that on leave, the mask will still return the bitmask of ports
315 * currently bridged, prior to port removal, and this is exactly what we want.
317 static u32 dsa_slave_br_port_mask(struct dsa_switch *ds,
318 struct net_device *bridge)
320 struct dsa_slave_priv *p;
324 for (port = 0; port < DSA_MAX_PORTS; port++) {
325 if (!dsa_is_port_initialized(ds, port))
328 p = netdev_priv(ds->ports[port]);
330 if (ds->ports[port]->priv_flags & IFF_BRIDGE_PORT &&
331 p->bridge_dev == bridge)
338 static int dsa_slave_stp_update(struct net_device *dev, u8 state)
340 struct dsa_slave_priv *p = netdev_priv(dev);
341 struct dsa_switch *ds = p->parent;
342 int ret = -EOPNOTSUPP;
344 if (ds->drv->port_stp_update)
345 ret = ds->drv->port_stp_update(ds, p->port, state);
350 static int dsa_slave_bridge_port_join(struct net_device *dev,
351 struct net_device *br)
353 struct dsa_slave_priv *p = netdev_priv(dev);
354 struct dsa_switch *ds = p->parent;
355 int ret = -EOPNOTSUPP;
359 if (ds->drv->port_join_bridge)
360 ret = ds->drv->port_join_bridge(ds, p->port,
361 dsa_slave_br_port_mask(ds, br));
366 static int dsa_slave_bridge_port_leave(struct net_device *dev)
368 struct dsa_slave_priv *p = netdev_priv(dev);
369 struct dsa_switch *ds = p->parent;
370 int ret = -EOPNOTSUPP;
373 if (ds->drv->port_leave_bridge)
374 ret = ds->drv->port_leave_bridge(ds, p->port,
375 dsa_slave_br_port_mask(ds, p->bridge_dev));
377 p->bridge_dev = NULL;
379 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
380 * so allow it to be in BR_STATE_FORWARDING to be kept functional
382 dsa_slave_stp_update(dev, BR_STATE_FORWARDING);
387 static int dsa_slave_parent_id_get(struct net_device *dev,
388 struct netdev_phys_item_id *psid)
390 struct dsa_slave_priv *p = netdev_priv(dev);
391 struct dsa_switch *ds = p->parent;
393 psid->id_len = sizeof(ds->index);
394 memcpy(&psid->id, &ds->index, psid->id_len);
399 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
401 struct dsa_slave_priv *p = netdev_priv(dev);
403 return p->xmit(skb, dev);
406 static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb,
407 struct net_device *dev)
409 struct dsa_slave_priv *p = netdev_priv(dev);
411 skb->dev = p->parent->dst->master_netdev;
418 /* ethtool operations *******************************************************/
420 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
422 struct dsa_slave_priv *p = netdev_priv(dev);
426 if (p->phy != NULL) {
427 err = phy_read_status(p->phy);
429 err = phy_ethtool_gset(p->phy, cmd);
436 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
438 struct dsa_slave_priv *p = netdev_priv(dev);
441 return phy_ethtool_sset(p->phy, cmd);
446 static void dsa_slave_get_drvinfo(struct net_device *dev,
447 struct ethtool_drvinfo *drvinfo)
449 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
450 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
451 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
452 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
455 static int dsa_slave_get_regs_len(struct net_device *dev)
457 struct dsa_slave_priv *p = netdev_priv(dev);
458 struct dsa_switch *ds = p->parent;
460 if (ds->drv->get_regs_len)
461 return ds->drv->get_regs_len(ds, p->port);
467 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
469 struct dsa_slave_priv *p = netdev_priv(dev);
470 struct dsa_switch *ds = p->parent;
472 if (ds->drv->get_regs)
473 ds->drv->get_regs(ds, p->port, regs, _p);
476 static int dsa_slave_nway_reset(struct net_device *dev)
478 struct dsa_slave_priv *p = netdev_priv(dev);
481 return genphy_restart_aneg(p->phy);
486 static u32 dsa_slave_get_link(struct net_device *dev)
488 struct dsa_slave_priv *p = netdev_priv(dev);
490 if (p->phy != NULL) {
491 genphy_update_link(p->phy);
498 static int dsa_slave_get_eeprom_len(struct net_device *dev)
500 struct dsa_slave_priv *p = netdev_priv(dev);
501 struct dsa_switch *ds = p->parent;
503 if (ds->pd->eeprom_len)
504 return ds->pd->eeprom_len;
506 if (ds->drv->get_eeprom_len)
507 return ds->drv->get_eeprom_len(ds);
512 static int dsa_slave_get_eeprom(struct net_device *dev,
513 struct ethtool_eeprom *eeprom, u8 *data)
515 struct dsa_slave_priv *p = netdev_priv(dev);
516 struct dsa_switch *ds = p->parent;
518 if (ds->drv->get_eeprom)
519 return ds->drv->get_eeprom(ds, eeprom, data);
524 static int dsa_slave_set_eeprom(struct net_device *dev,
525 struct ethtool_eeprom *eeprom, u8 *data)
527 struct dsa_slave_priv *p = netdev_priv(dev);
528 struct dsa_switch *ds = p->parent;
530 if (ds->drv->set_eeprom)
531 return ds->drv->set_eeprom(ds, eeprom, data);
536 static void dsa_slave_get_strings(struct net_device *dev,
537 uint32_t stringset, uint8_t *data)
539 struct dsa_slave_priv *p = netdev_priv(dev);
540 struct dsa_switch *ds = p->parent;
542 if (stringset == ETH_SS_STATS) {
543 int len = ETH_GSTRING_LEN;
545 strncpy(data, "tx_packets", len);
546 strncpy(data + len, "tx_bytes", len);
547 strncpy(data + 2 * len, "rx_packets", len);
548 strncpy(data + 3 * len, "rx_bytes", len);
549 if (ds->drv->get_strings != NULL)
550 ds->drv->get_strings(ds, p->port, data + 4 * len);
554 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
555 struct ethtool_stats *stats,
558 struct dsa_slave_priv *p = netdev_priv(dev);
559 struct dsa_switch *ds = p->parent;
561 data[0] = p->dev->stats.tx_packets;
562 data[1] = p->dev->stats.tx_bytes;
563 data[2] = p->dev->stats.rx_packets;
564 data[3] = p->dev->stats.rx_bytes;
565 if (ds->drv->get_ethtool_stats != NULL)
566 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
569 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
571 struct dsa_slave_priv *p = netdev_priv(dev);
572 struct dsa_switch *ds = p->parent;
574 if (sset == ETH_SS_STATS) {
578 if (ds->drv->get_sset_count != NULL)
579 count += ds->drv->get_sset_count(ds);
587 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
589 struct dsa_slave_priv *p = netdev_priv(dev);
590 struct dsa_switch *ds = p->parent;
592 if (ds->drv->get_wol)
593 ds->drv->get_wol(ds, p->port, w);
596 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
598 struct dsa_slave_priv *p = netdev_priv(dev);
599 struct dsa_switch *ds = p->parent;
600 int ret = -EOPNOTSUPP;
602 if (ds->drv->set_wol)
603 ret = ds->drv->set_wol(ds, p->port, w);
608 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
610 struct dsa_slave_priv *p = netdev_priv(dev);
611 struct dsa_switch *ds = p->parent;
614 if (!ds->drv->set_eee)
617 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
622 ret = phy_ethtool_set_eee(p->phy, e);
627 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
629 struct dsa_slave_priv *p = netdev_priv(dev);
630 struct dsa_switch *ds = p->parent;
633 if (!ds->drv->get_eee)
636 ret = ds->drv->get_eee(ds, p->port, e);
641 ret = phy_ethtool_get_eee(p->phy, e);
646 static const struct ethtool_ops dsa_slave_ethtool_ops = {
647 .get_settings = dsa_slave_get_settings,
648 .set_settings = dsa_slave_set_settings,
649 .get_drvinfo = dsa_slave_get_drvinfo,
650 .get_regs_len = dsa_slave_get_regs_len,
651 .get_regs = dsa_slave_get_regs,
652 .nway_reset = dsa_slave_nway_reset,
653 .get_link = dsa_slave_get_link,
654 .get_eeprom_len = dsa_slave_get_eeprom_len,
655 .get_eeprom = dsa_slave_get_eeprom,
656 .set_eeprom = dsa_slave_set_eeprom,
657 .get_strings = dsa_slave_get_strings,
658 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
659 .get_sset_count = dsa_slave_get_sset_count,
660 .set_wol = dsa_slave_set_wol,
661 .get_wol = dsa_slave_get_wol,
662 .set_eee = dsa_slave_set_eee,
663 .get_eee = dsa_slave_get_eee,
666 static const struct net_device_ops dsa_slave_netdev_ops = {
667 .ndo_init = dsa_slave_init,
668 .ndo_open = dsa_slave_open,
669 .ndo_stop = dsa_slave_close,
670 .ndo_start_xmit = dsa_slave_xmit,
671 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
672 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
673 .ndo_set_mac_address = dsa_slave_set_mac_address,
674 .ndo_fdb_add = dsa_slave_fdb_add,
675 .ndo_fdb_del = dsa_slave_fdb_del,
676 .ndo_fdb_dump = dsa_slave_fdb_dump,
677 .ndo_do_ioctl = dsa_slave_ioctl,
680 static const struct swdev_ops dsa_slave_swdev_ops = {
681 .swdev_parent_id_get = dsa_slave_parent_id_get,
682 .swdev_port_stp_update = dsa_slave_stp_update,
685 static void dsa_slave_adjust_link(struct net_device *dev)
687 struct dsa_slave_priv *p = netdev_priv(dev);
688 struct dsa_switch *ds = p->parent;
689 unsigned int status_changed = 0;
691 if (p->old_link != p->phy->link) {
693 p->old_link = p->phy->link;
696 if (p->old_duplex != p->phy->duplex) {
698 p->old_duplex = p->phy->duplex;
701 if (p->old_pause != p->phy->pause) {
703 p->old_pause = p->phy->pause;
706 if (ds->drv->adjust_link && status_changed)
707 ds->drv->adjust_link(ds, p->port, p->phy);
710 phy_print_status(p->phy);
713 static int dsa_slave_fixed_link_update(struct net_device *dev,
714 struct fixed_phy_status *status)
716 struct dsa_slave_priv *p = netdev_priv(dev);
717 struct dsa_switch *ds = p->parent;
719 if (ds->drv->fixed_link_update)
720 ds->drv->fixed_link_update(ds, p->port, status);
725 /* slave device setup *******************************************************/
726 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
727 struct net_device *slave_dev,
730 struct dsa_switch *ds = p->parent;
732 p->phy = ds->slave_mii_bus->phy_map[addr];
736 /* Use already configured phy mode */
737 p->phy_interface = p->phy->interface;
738 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
744 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
745 struct net_device *slave_dev)
747 struct dsa_switch *ds = p->parent;
748 struct dsa_chip_data *cd = ds->pd;
749 struct device_node *phy_dn, *port_dn;
750 bool phy_is_fixed = false;
754 port_dn = cd->port_dn[p->port];
755 mode = of_get_phy_mode(port_dn);
757 mode = PHY_INTERFACE_MODE_NA;
758 p->phy_interface = mode;
760 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
761 if (of_phy_is_fixed_link(port_dn)) {
762 /* In the case of a fixed PHY, the DT node associated
763 * to the fixed PHY is the Port DT node
765 ret = of_phy_register_fixed_link(port_dn);
767 netdev_err(slave_dev, "failed to register fixed PHY\n");
774 if (ds->drv->get_phy_flags)
775 phy_flags = ds->drv->get_phy_flags(ds, p->port);
778 ret = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
779 /* If this PHY address is part of phys_mii_mask, which means
780 * that we need to divert reads and writes to/from it, then we
781 * want to bind this device using the slave MII bus created by
782 * DSA to make that happen.
784 if (!phy_is_fixed && ret >= 0 &&
785 (ds->phys_mii_mask & (1 << ret))) {
786 ret = dsa_slave_phy_connect(p, slave_dev, ret);
790 p->phy = of_phy_connect(slave_dev, phy_dn,
791 dsa_slave_adjust_link,
797 if (p->phy && phy_is_fixed)
798 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
800 /* We could not connect to a designated PHY, so use the switch internal
804 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
808 netdev_info(slave_dev, "attached PHY at address %d [%s]\n",
809 p->phy->addr, p->phy->drv->name);
815 int dsa_slave_suspend(struct net_device *slave_dev)
817 struct dsa_slave_priv *p = netdev_priv(slave_dev);
819 netif_device_detach(slave_dev);
832 int dsa_slave_resume(struct net_device *slave_dev)
834 struct dsa_slave_priv *p = netdev_priv(slave_dev);
836 netif_device_attach(slave_dev);
846 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
847 int port, char *name)
849 struct net_device *master = ds->dst->master_netdev;
850 struct net_device *slave_dev;
851 struct dsa_slave_priv *p;
854 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
855 NET_NAME_UNKNOWN, ether_setup);
856 if (slave_dev == NULL)
859 slave_dev->features = master->vlan_features;
860 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
861 eth_hw_addr_inherit(slave_dev, master);
862 slave_dev->tx_queue_len = 0;
863 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
864 slave_dev->swdev_ops = &dsa_slave_swdev_ops;
866 SET_NETDEV_DEV(slave_dev, parent);
867 slave_dev->dev.of_node = ds->pd->port_dn[port];
868 slave_dev->vlan_features = master->vlan_features;
870 p = netdev_priv(slave_dev);
875 switch (ds->dst->tag_protocol) {
876 #ifdef CONFIG_NET_DSA_TAG_DSA
877 case DSA_TAG_PROTO_DSA:
878 p->xmit = dsa_netdev_ops.xmit;
881 #ifdef CONFIG_NET_DSA_TAG_EDSA
882 case DSA_TAG_PROTO_EDSA:
883 p->xmit = edsa_netdev_ops.xmit;
886 #ifdef CONFIG_NET_DSA_TAG_TRAILER
887 case DSA_TAG_PROTO_TRAILER:
888 p->xmit = trailer_netdev_ops.xmit;
891 #ifdef CONFIG_NET_DSA_TAG_BRCM
892 case DSA_TAG_PROTO_BRCM:
893 p->xmit = brcm_netdev_ops.xmit;
897 p->xmit = dsa_slave_notag_xmit;
905 ret = dsa_slave_phy_setup(p, slave_dev);
907 free_netdev(slave_dev);
911 ds->ports[port] = slave_dev;
912 ret = register_netdev(slave_dev);
914 netdev_err(master, "error %d registering interface %s\n",
915 ret, slave_dev->name);
916 phy_disconnect(p->phy);
917 ds->ports[port] = NULL;
918 free_netdev(slave_dev);
922 netif_carrier_off(slave_dev);
927 static bool dsa_slave_dev_check(struct net_device *dev)
929 return dev->netdev_ops == &dsa_slave_netdev_ops;
932 static int dsa_slave_master_changed(struct net_device *dev)
934 struct net_device *master = netdev_master_upper_dev_get(dev);
935 struct dsa_slave_priv *p = netdev_priv(dev);
938 if (master && master->rtnl_link_ops &&
939 !strcmp(master->rtnl_link_ops->kind, "bridge"))
940 err = dsa_slave_bridge_port_join(dev, master);
941 else if (dsa_port_is_bridged(p))
942 err = dsa_slave_bridge_port_leave(dev);
947 int dsa_slave_netdevice_event(struct notifier_block *unused,
948 unsigned long event, void *ptr)
950 struct net_device *dev;
954 case NETDEV_CHANGEUPPER:
955 dev = netdev_notifier_info_to_dev(ptr);
956 if (!dsa_slave_dev_check(dev))
959 err = dsa_slave_master_changed(dev);
961 netdev_warn(dev, "failed to reflect master change\n");