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.%d",
53 ds->dst->tree, ds->index);
54 ds->slave_mii_bus->parent = ds->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_fastest_ageing_time(struct dsa_switch *ds,
337 unsigned int ageing_time)
341 for (i = 0; i < DSA_MAX_PORTS; ++i) {
342 struct dsa_port *dp = &ds->ports[i];
344 if (dp && dp->ageing_time && dp->ageing_time < ageing_time)
345 ageing_time = dp->ageing_time;
351 static int dsa_slave_ageing_time(struct net_device *dev,
352 const struct switchdev_attr *attr,
353 struct switchdev_trans *trans)
355 struct dsa_slave_priv *p = netdev_priv(dev);
356 struct dsa_switch *ds = p->parent;
357 unsigned long ageing_jiffies = clock_t_to_jiffies(attr->u.ageing_time);
358 unsigned int ageing_time = jiffies_to_msecs(ageing_jiffies);
360 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
361 if (switchdev_trans_ph_prepare(trans))
364 /* Keep the fastest ageing time in case of multiple bridges */
365 ds->ports[p->port].ageing_time = ageing_time;
366 ageing_time = dsa_fastest_ageing_time(ds, ageing_time);
368 if (ds->drv->set_ageing_time)
369 return ds->drv->set_ageing_time(ds, ageing_time);
374 static int dsa_slave_port_attr_set(struct net_device *dev,
375 const struct switchdev_attr *attr,
376 struct switchdev_trans *trans)
381 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
382 ret = dsa_slave_stp_state_set(dev, attr, trans);
384 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
385 ret = dsa_slave_vlan_filtering(dev, attr, trans);
387 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
388 ret = dsa_slave_ageing_time(dev, attr, trans);
398 static int dsa_slave_port_obj_add(struct net_device *dev,
399 const struct switchdev_obj *obj,
400 struct switchdev_trans *trans)
404 /* For the prepare phase, ensure the full set of changes is feasable in
405 * one go in order to signal a failure properly. If an operation is not
406 * supported, return -EOPNOTSUPP.
410 case SWITCHDEV_OBJ_ID_PORT_FDB:
411 err = dsa_slave_port_fdb_add(dev,
412 SWITCHDEV_OBJ_PORT_FDB(obj),
415 case SWITCHDEV_OBJ_ID_PORT_VLAN:
416 err = dsa_slave_port_vlan_add(dev,
417 SWITCHDEV_OBJ_PORT_VLAN(obj),
428 static int dsa_slave_port_obj_del(struct net_device *dev,
429 const struct switchdev_obj *obj)
434 case SWITCHDEV_OBJ_ID_PORT_FDB:
435 err = dsa_slave_port_fdb_del(dev,
436 SWITCHDEV_OBJ_PORT_FDB(obj));
438 case SWITCHDEV_OBJ_ID_PORT_VLAN:
439 err = dsa_slave_port_vlan_del(dev,
440 SWITCHDEV_OBJ_PORT_VLAN(obj));
450 static int dsa_slave_port_obj_dump(struct net_device *dev,
451 struct switchdev_obj *obj,
452 switchdev_obj_dump_cb_t *cb)
457 case SWITCHDEV_OBJ_ID_PORT_FDB:
458 err = dsa_slave_port_fdb_dump(dev,
459 SWITCHDEV_OBJ_PORT_FDB(obj),
462 case SWITCHDEV_OBJ_ID_PORT_VLAN:
463 err = dsa_slave_port_vlan_dump(dev,
464 SWITCHDEV_OBJ_PORT_VLAN(obj),
475 static int dsa_slave_bridge_port_join(struct net_device *dev,
476 struct net_device *br)
478 struct dsa_slave_priv *p = netdev_priv(dev);
479 struct dsa_switch *ds = p->parent;
480 int ret = -EOPNOTSUPP;
484 if (ds->drv->port_bridge_join)
485 ret = ds->drv->port_bridge_join(ds, p->port, br);
487 return ret == -EOPNOTSUPP ? 0 : ret;
490 static void dsa_slave_bridge_port_leave(struct net_device *dev)
492 struct dsa_slave_priv *p = netdev_priv(dev);
493 struct dsa_switch *ds = p->parent;
496 if (ds->drv->port_bridge_leave)
497 ds->drv->port_bridge_leave(ds, p->port);
499 p->bridge_dev = NULL;
501 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
502 * so allow it to be in BR_STATE_FORWARDING to be kept functional
504 if (ds->drv->port_stp_state_set)
505 ds->drv->port_stp_state_set(ds, p->port, BR_STATE_FORWARDING);
508 static int dsa_slave_port_attr_get(struct net_device *dev,
509 struct switchdev_attr *attr)
511 struct dsa_slave_priv *p = netdev_priv(dev);
512 struct dsa_switch *ds = p->parent;
515 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
516 attr->u.ppid.id_len = sizeof(ds->index);
517 memcpy(&attr->u.ppid.id, &ds->index, attr->u.ppid.id_len);
526 static inline netdev_tx_t dsa_netpoll_send_skb(struct dsa_slave_priv *p,
529 #ifdef CONFIG_NET_POLL_CONTROLLER
531 netpoll_send_skb(p->netpoll, skb);
538 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
540 struct dsa_slave_priv *p = netdev_priv(dev);
541 struct sk_buff *nskb;
543 dev->stats.tx_packets++;
544 dev->stats.tx_bytes += skb->len;
546 /* Transmit function may have to reallocate the original SKB */
547 nskb = p->xmit(skb, dev);
551 /* SKB for netpoll still need to be mangled with the protocol-specific
552 * tag to be successfully transmitted
554 if (unlikely(netpoll_tx_running(dev)))
555 return dsa_netpoll_send_skb(p, nskb);
557 /* Queue the SKB for transmission on the parent interface, but
558 * do not modify its EtherType
560 nskb->dev = p->parent->dst->master_netdev;
561 dev_queue_xmit(nskb);
566 /* ethtool operations *******************************************************/
568 dsa_slave_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
570 struct dsa_slave_priv *p = netdev_priv(dev);
574 if (p->phy != NULL) {
575 err = phy_read_status(p->phy);
577 err = phy_ethtool_gset(p->phy, cmd);
584 dsa_slave_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
586 struct dsa_slave_priv *p = netdev_priv(dev);
589 return phy_ethtool_sset(p->phy, cmd);
594 static void dsa_slave_get_drvinfo(struct net_device *dev,
595 struct ethtool_drvinfo *drvinfo)
597 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
598 strlcpy(drvinfo->version, dsa_driver_version, sizeof(drvinfo->version));
599 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
600 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
603 static int dsa_slave_get_regs_len(struct net_device *dev)
605 struct dsa_slave_priv *p = netdev_priv(dev);
606 struct dsa_switch *ds = p->parent;
608 if (ds->drv->get_regs_len)
609 return ds->drv->get_regs_len(ds, p->port);
615 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
617 struct dsa_slave_priv *p = netdev_priv(dev);
618 struct dsa_switch *ds = p->parent;
620 if (ds->drv->get_regs)
621 ds->drv->get_regs(ds, p->port, regs, _p);
624 static int dsa_slave_nway_reset(struct net_device *dev)
626 struct dsa_slave_priv *p = netdev_priv(dev);
629 return genphy_restart_aneg(p->phy);
634 static u32 dsa_slave_get_link(struct net_device *dev)
636 struct dsa_slave_priv *p = netdev_priv(dev);
638 if (p->phy != NULL) {
639 genphy_update_link(p->phy);
646 static int dsa_slave_get_eeprom_len(struct net_device *dev)
648 struct dsa_slave_priv *p = netdev_priv(dev);
649 struct dsa_switch *ds = p->parent;
651 if (ds->cd && ds->cd->eeprom_len)
652 return ds->cd->eeprom_len;
654 if (ds->drv->get_eeprom_len)
655 return ds->drv->get_eeprom_len(ds);
660 static int dsa_slave_get_eeprom(struct net_device *dev,
661 struct ethtool_eeprom *eeprom, u8 *data)
663 struct dsa_slave_priv *p = netdev_priv(dev);
664 struct dsa_switch *ds = p->parent;
666 if (ds->drv->get_eeprom)
667 return ds->drv->get_eeprom(ds, eeprom, data);
672 static int dsa_slave_set_eeprom(struct net_device *dev,
673 struct ethtool_eeprom *eeprom, u8 *data)
675 struct dsa_slave_priv *p = netdev_priv(dev);
676 struct dsa_switch *ds = p->parent;
678 if (ds->drv->set_eeprom)
679 return ds->drv->set_eeprom(ds, eeprom, data);
684 static void dsa_slave_get_strings(struct net_device *dev,
685 uint32_t stringset, uint8_t *data)
687 struct dsa_slave_priv *p = netdev_priv(dev);
688 struct dsa_switch *ds = p->parent;
690 if (stringset == ETH_SS_STATS) {
691 int len = ETH_GSTRING_LEN;
693 strncpy(data, "tx_packets", len);
694 strncpy(data + len, "tx_bytes", len);
695 strncpy(data + 2 * len, "rx_packets", len);
696 strncpy(data + 3 * len, "rx_bytes", len);
697 if (ds->drv->get_strings != NULL)
698 ds->drv->get_strings(ds, p->port, data + 4 * len);
702 static void dsa_cpu_port_get_ethtool_stats(struct net_device *dev,
703 struct ethtool_stats *stats,
706 struct dsa_switch_tree *dst = dev->dsa_ptr;
707 struct dsa_switch *ds = dst->ds[0];
708 s8 cpu_port = dst->cpu_port;
711 if (dst->master_ethtool_ops.get_sset_count) {
712 count = dst->master_ethtool_ops.get_sset_count(dev,
714 dst->master_ethtool_ops.get_ethtool_stats(dev, stats, data);
717 if (ds->drv->get_ethtool_stats)
718 ds->drv->get_ethtool_stats(ds, cpu_port, data + count);
721 static int dsa_cpu_port_get_sset_count(struct net_device *dev, int sset)
723 struct dsa_switch_tree *dst = dev->dsa_ptr;
724 struct dsa_switch *ds = dst->ds[0];
727 if (dst->master_ethtool_ops.get_sset_count)
728 count += dst->master_ethtool_ops.get_sset_count(dev, sset);
730 if (sset == ETH_SS_STATS && ds->drv->get_sset_count)
731 count += ds->drv->get_sset_count(ds);
736 static void dsa_cpu_port_get_strings(struct net_device *dev,
737 uint32_t stringset, uint8_t *data)
739 struct dsa_switch_tree *dst = dev->dsa_ptr;
740 struct dsa_switch *ds = dst->ds[0];
741 s8 cpu_port = dst->cpu_port;
742 int len = ETH_GSTRING_LEN;
743 int mcount = 0, count;
748 snprintf(pfx, sizeof(pfx), "p%.2d", cpu_port);
749 /* We do not want to be NULL-terminated, since this is a prefix */
750 pfx[sizeof(pfx) - 1] = '_';
752 if (dst->master_ethtool_ops.get_sset_count) {
753 mcount = dst->master_ethtool_ops.get_sset_count(dev,
755 dst->master_ethtool_ops.get_strings(dev, stringset, data);
758 if (stringset == ETH_SS_STATS && ds->drv->get_strings) {
759 ndata = data + mcount * len;
760 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
761 * the output after to prepend our CPU port prefix we
762 * constructed earlier
764 ds->drv->get_strings(ds, cpu_port, ndata);
765 count = ds->drv->get_sset_count(ds);
766 for (i = 0; i < count; i++) {
767 memmove(ndata + (i * len + sizeof(pfx)),
768 ndata + i * len, len - sizeof(pfx));
769 memcpy(ndata + i * len, pfx, sizeof(pfx));
774 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
775 struct ethtool_stats *stats,
778 struct dsa_slave_priv *p = netdev_priv(dev);
779 struct dsa_switch *ds = p->parent;
781 data[0] = dev->stats.tx_packets;
782 data[1] = dev->stats.tx_bytes;
783 data[2] = dev->stats.rx_packets;
784 data[3] = dev->stats.rx_bytes;
785 if (ds->drv->get_ethtool_stats != NULL)
786 ds->drv->get_ethtool_stats(ds, p->port, data + 4);
789 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
791 struct dsa_slave_priv *p = netdev_priv(dev);
792 struct dsa_switch *ds = p->parent;
794 if (sset == ETH_SS_STATS) {
798 if (ds->drv->get_sset_count != NULL)
799 count += ds->drv->get_sset_count(ds);
807 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
809 struct dsa_slave_priv *p = netdev_priv(dev);
810 struct dsa_switch *ds = p->parent;
812 if (ds->drv->get_wol)
813 ds->drv->get_wol(ds, p->port, w);
816 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
818 struct dsa_slave_priv *p = netdev_priv(dev);
819 struct dsa_switch *ds = p->parent;
820 int ret = -EOPNOTSUPP;
822 if (ds->drv->set_wol)
823 ret = ds->drv->set_wol(ds, p->port, w);
828 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
830 struct dsa_slave_priv *p = netdev_priv(dev);
831 struct dsa_switch *ds = p->parent;
834 if (!ds->drv->set_eee)
837 ret = ds->drv->set_eee(ds, p->port, p->phy, e);
842 ret = phy_ethtool_set_eee(p->phy, e);
847 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
849 struct dsa_slave_priv *p = netdev_priv(dev);
850 struct dsa_switch *ds = p->parent;
853 if (!ds->drv->get_eee)
856 ret = ds->drv->get_eee(ds, p->port, e);
861 ret = phy_ethtool_get_eee(p->phy, e);
866 #ifdef CONFIG_NET_POLL_CONTROLLER
867 static int dsa_slave_netpoll_setup(struct net_device *dev,
868 struct netpoll_info *ni)
870 struct dsa_slave_priv *p = netdev_priv(dev);
871 struct dsa_switch *ds = p->parent;
872 struct net_device *master = ds->dst->master_netdev;
873 struct netpoll *netpoll;
876 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
880 err = __netpoll_setup(netpoll, master);
886 p->netpoll = netpoll;
891 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
893 struct dsa_slave_priv *p = netdev_priv(dev);
894 struct netpoll *netpoll = p->netpoll;
901 __netpoll_free_async(netpoll);
904 static void dsa_slave_poll_controller(struct net_device *dev)
909 void dsa_cpu_port_ethtool_init(struct ethtool_ops *ops)
911 ops->get_sset_count = dsa_cpu_port_get_sset_count;
912 ops->get_ethtool_stats = dsa_cpu_port_get_ethtool_stats;
913 ops->get_strings = dsa_cpu_port_get_strings;
916 static const struct ethtool_ops dsa_slave_ethtool_ops = {
917 .get_settings = dsa_slave_get_settings,
918 .set_settings = dsa_slave_set_settings,
919 .get_drvinfo = dsa_slave_get_drvinfo,
920 .get_regs_len = dsa_slave_get_regs_len,
921 .get_regs = dsa_slave_get_regs,
922 .nway_reset = dsa_slave_nway_reset,
923 .get_link = dsa_slave_get_link,
924 .get_eeprom_len = dsa_slave_get_eeprom_len,
925 .get_eeprom = dsa_slave_get_eeprom,
926 .set_eeprom = dsa_slave_set_eeprom,
927 .get_strings = dsa_slave_get_strings,
928 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
929 .get_sset_count = dsa_slave_get_sset_count,
930 .set_wol = dsa_slave_set_wol,
931 .get_wol = dsa_slave_get_wol,
932 .set_eee = dsa_slave_set_eee,
933 .get_eee = dsa_slave_get_eee,
936 static const struct net_device_ops dsa_slave_netdev_ops = {
937 .ndo_open = dsa_slave_open,
938 .ndo_stop = dsa_slave_close,
939 .ndo_start_xmit = dsa_slave_xmit,
940 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
941 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
942 .ndo_set_mac_address = dsa_slave_set_mac_address,
943 .ndo_fdb_add = switchdev_port_fdb_add,
944 .ndo_fdb_del = switchdev_port_fdb_del,
945 .ndo_fdb_dump = switchdev_port_fdb_dump,
946 .ndo_do_ioctl = dsa_slave_ioctl,
947 .ndo_get_iflink = dsa_slave_get_iflink,
948 #ifdef CONFIG_NET_POLL_CONTROLLER
949 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
950 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
951 .ndo_poll_controller = dsa_slave_poll_controller,
953 .ndo_bridge_getlink = switchdev_port_bridge_getlink,
954 .ndo_bridge_setlink = switchdev_port_bridge_setlink,
955 .ndo_bridge_dellink = switchdev_port_bridge_dellink,
958 static const struct switchdev_ops dsa_slave_switchdev_ops = {
959 .switchdev_port_attr_get = dsa_slave_port_attr_get,
960 .switchdev_port_attr_set = dsa_slave_port_attr_set,
961 .switchdev_port_obj_add = dsa_slave_port_obj_add,
962 .switchdev_port_obj_del = dsa_slave_port_obj_del,
963 .switchdev_port_obj_dump = dsa_slave_port_obj_dump,
966 static struct device_type dsa_type = {
970 static void dsa_slave_adjust_link(struct net_device *dev)
972 struct dsa_slave_priv *p = netdev_priv(dev);
973 struct dsa_switch *ds = p->parent;
974 unsigned int status_changed = 0;
976 if (p->old_link != p->phy->link) {
978 p->old_link = p->phy->link;
981 if (p->old_duplex != p->phy->duplex) {
983 p->old_duplex = p->phy->duplex;
986 if (p->old_pause != p->phy->pause) {
988 p->old_pause = p->phy->pause;
991 if (ds->drv->adjust_link && status_changed)
992 ds->drv->adjust_link(ds, p->port, p->phy);
995 phy_print_status(p->phy);
998 static int dsa_slave_fixed_link_update(struct net_device *dev,
999 struct fixed_phy_status *status)
1001 struct dsa_slave_priv *p;
1002 struct dsa_switch *ds;
1005 p = netdev_priv(dev);
1007 if (ds->drv->fixed_link_update)
1008 ds->drv->fixed_link_update(ds, p->port, status);
1014 /* slave device setup *******************************************************/
1015 static int dsa_slave_phy_connect(struct dsa_slave_priv *p,
1016 struct net_device *slave_dev,
1019 struct dsa_switch *ds = p->parent;
1021 p->phy = mdiobus_get_phy(ds->slave_mii_bus, addr);
1023 netdev_err(slave_dev, "no phy at %d\n", addr);
1027 /* Use already configured phy mode */
1028 if (p->phy_interface == PHY_INTERFACE_MODE_NA)
1029 p->phy_interface = p->phy->interface;
1030 phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
1036 static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
1037 struct net_device *slave_dev)
1039 struct dsa_switch *ds = p->parent;
1040 struct device_node *phy_dn, *port_dn;
1041 bool phy_is_fixed = false;
1045 port_dn = ds->ports[p->port].dn;
1046 mode = of_get_phy_mode(port_dn);
1048 mode = PHY_INTERFACE_MODE_NA;
1049 p->phy_interface = mode;
1051 phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
1052 if (of_phy_is_fixed_link(port_dn)) {
1053 /* In the case of a fixed PHY, the DT node associated
1054 * to the fixed PHY is the Port DT node
1056 ret = of_phy_register_fixed_link(port_dn);
1058 netdev_err(slave_dev, "failed to register fixed PHY: %d\n", ret);
1061 phy_is_fixed = true;
1065 if (ds->drv->get_phy_flags)
1066 phy_flags = ds->drv->get_phy_flags(ds, p->port);
1069 int phy_id = of_mdio_parse_addr(&slave_dev->dev, phy_dn);
1071 /* If this PHY address is part of phys_mii_mask, which means
1072 * that we need to divert reads and writes to/from it, then we
1073 * want to bind this device using the slave MII bus created by
1074 * DSA to make that happen.
1076 if (!phy_is_fixed && phy_id >= 0 &&
1077 (ds->phys_mii_mask & (1 << phy_id))) {
1078 ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
1080 netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
1084 p->phy = of_phy_connect(slave_dev, phy_dn,
1085 dsa_slave_adjust_link,
1091 if (p->phy && phy_is_fixed)
1092 fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
1094 /* We could not connect to a designated PHY, so use the switch internal
1098 ret = dsa_slave_phy_connect(p, slave_dev, p->port);
1100 netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
1105 phy_attached_info(p->phy);
1110 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1111 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1112 struct netdev_queue *txq,
1115 lockdep_set_class(&txq->_xmit_lock,
1116 &dsa_slave_netdev_xmit_lock_key);
1119 int dsa_slave_suspend(struct net_device *slave_dev)
1121 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1128 phy_suspend(p->phy);
1134 int dsa_slave_resume(struct net_device *slave_dev)
1136 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1138 netif_device_attach(slave_dev);
1148 int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
1149 int port, const char *name)
1151 struct dsa_switch_tree *dst = ds->dst;
1152 struct net_device *master;
1153 struct net_device *slave_dev;
1154 struct dsa_slave_priv *p;
1157 master = ds->dst->master_netdev;
1158 if (ds->master_netdev)
1159 master = ds->master_netdev;
1161 slave_dev = alloc_netdev(sizeof(struct dsa_slave_priv), name,
1162 NET_NAME_UNKNOWN, ether_setup);
1163 if (slave_dev == NULL)
1166 slave_dev->features = master->vlan_features;
1167 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1168 eth_hw_addr_inherit(slave_dev, master);
1169 slave_dev->priv_flags |= IFF_NO_QUEUE;
1170 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1171 slave_dev->switchdev_ops = &dsa_slave_switchdev_ops;
1172 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1174 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1177 SET_NETDEV_DEV(slave_dev, parent);
1178 slave_dev->dev.of_node = ds->ports[port].dn;
1179 slave_dev->vlan_features = master->vlan_features;
1181 p = netdev_priv(slave_dev);
1184 p->xmit = dst->tag_ops->xmit;
1190 ds->ports[port].netdev = slave_dev;
1191 ret = register_netdev(slave_dev);
1193 netdev_err(master, "error %d registering interface %s\n",
1194 ret, slave_dev->name);
1195 ds->ports[port].netdev = NULL;
1196 free_netdev(slave_dev);
1200 netif_carrier_off(slave_dev);
1202 ret = dsa_slave_phy_setup(p, slave_dev);
1204 netdev_err(master, "error %d setting up slave phy\n", ret);
1205 unregister_netdev(slave_dev);
1206 free_netdev(slave_dev);
1213 void dsa_slave_destroy(struct net_device *slave_dev)
1215 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1217 netif_carrier_off(slave_dev);
1219 phy_disconnect(p->phy);
1220 unregister_netdev(slave_dev);
1221 free_netdev(slave_dev);
1224 static bool dsa_slave_dev_check(struct net_device *dev)
1226 return dev->netdev_ops == &dsa_slave_netdev_ops;
1229 static int dsa_slave_port_upper_event(struct net_device *dev,
1230 unsigned long event, void *ptr)
1232 struct netdev_notifier_changeupper_info *info = ptr;
1233 struct net_device *upper = info->upper_dev;
1237 case NETDEV_CHANGEUPPER:
1238 if (netif_is_bridge_master(upper)) {
1240 err = dsa_slave_bridge_port_join(dev, upper);
1242 dsa_slave_bridge_port_leave(dev);
1248 return notifier_from_errno(err);
1251 static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
1255 case NETDEV_CHANGEUPPER:
1256 return dsa_slave_port_upper_event(dev, event, ptr);
1262 int dsa_slave_netdevice_event(struct notifier_block *unused,
1263 unsigned long event, void *ptr)
1265 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1267 if (dsa_slave_dev_check(dev))
1268 return dsa_slave_port_event(dev, event, ptr);