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_update
)
108 ds
->drv
->port_stp_update(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_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_port_vlan_add(struct net_device
*dev
,
205 const struct switchdev_obj_port_vlan
*vlan
,
206 struct switchdev_trans
*trans
)
208 struct dsa_slave_priv
*p
= netdev_priv(dev
);
209 struct dsa_switch
*ds
= p
->parent
;
212 if (switchdev_trans_ph_prepare(trans
)) {
213 if (!ds
->drv
->port_vlan_prepare
|| !ds
->drv
->port_vlan_add
)
216 err
= ds
->drv
->port_vlan_prepare(ds
, p
->port
, vlan
, trans
);
220 err
= ds
->drv
->port_vlan_add(ds
, p
->port
, vlan
, trans
);
228 static int dsa_slave_port_vlan_del(struct net_device
*dev
,
229 const struct switchdev_obj_port_vlan
*vlan
)
231 struct dsa_slave_priv
*p
= netdev_priv(dev
);
232 struct dsa_switch
*ds
= p
->parent
;
234 if (!ds
->drv
->port_vlan_del
)
237 return ds
->drv
->port_vlan_del(ds
, p
->port
, vlan
);
240 static int dsa_slave_port_vlan_dump(struct net_device
*dev
,
241 struct switchdev_obj_port_vlan
*vlan
,
242 switchdev_obj_dump_cb_t
*cb
)
244 struct dsa_slave_priv
*p
= netdev_priv(dev
);
245 struct dsa_switch
*ds
= p
->parent
;
247 if (ds
->drv
->port_vlan_dump
)
248 return ds
->drv
->port_vlan_dump(ds
, p
->port
, vlan
, cb
);
253 static int dsa_slave_port_fdb_add(struct net_device
*dev
,
254 const struct switchdev_obj_port_fdb
*fdb
,
255 struct switchdev_trans
*trans
)
257 struct dsa_slave_priv
*p
= netdev_priv(dev
);
258 struct dsa_switch
*ds
= p
->parent
;
261 if (!ds
->drv
->port_fdb_prepare
|| !ds
->drv
->port_fdb_add
)
264 if (switchdev_trans_ph_prepare(trans
))
265 ret
= ds
->drv
->port_fdb_prepare(ds
, p
->port
, fdb
, trans
);
267 ret
= ds
->drv
->port_fdb_add(ds
, p
->port
, fdb
, trans
);
272 static int dsa_slave_port_fdb_del(struct net_device
*dev
,
273 const struct switchdev_obj_port_fdb
*fdb
)
275 struct dsa_slave_priv
*p
= netdev_priv(dev
);
276 struct dsa_switch
*ds
= p
->parent
;
277 int ret
= -EOPNOTSUPP
;
279 if (ds
->drv
->port_fdb_del
)
280 ret
= ds
->drv
->port_fdb_del(ds
, p
->port
, fdb
);
285 static int dsa_slave_port_fdb_dump(struct net_device
*dev
,
286 struct switchdev_obj_port_fdb
*fdb
,
287 switchdev_obj_dump_cb_t
*cb
)
289 struct dsa_slave_priv
*p
= netdev_priv(dev
);
290 struct dsa_switch
*ds
= p
->parent
;
292 if (ds
->drv
->port_fdb_dump
)
293 return ds
->drv
->port_fdb_dump(ds
, p
->port
, fdb
, cb
);
298 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
300 struct dsa_slave_priv
*p
= netdev_priv(dev
);
303 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
308 static int dsa_slave_stp_update(struct net_device
*dev
, u8 state
)
310 struct dsa_slave_priv
*p
= netdev_priv(dev
);
311 struct dsa_switch
*ds
= p
->parent
;
312 int ret
= -EOPNOTSUPP
;
314 if (ds
->drv
->port_stp_update
)
315 ret
= ds
->drv
->port_stp_update(ds
, p
->port
, state
);
320 static int dsa_slave_vlan_filtering(struct net_device
*dev
,
321 const struct switchdev_attr
*attr
,
322 struct switchdev_trans
*trans
)
324 struct dsa_slave_priv
*p
= netdev_priv(dev
);
325 struct dsa_switch
*ds
= p
->parent
;
327 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
328 if (switchdev_trans_ph_prepare(trans
))
331 if (ds
->drv
->port_vlan_filtering
)
332 return ds
->drv
->port_vlan_filtering(ds
, p
->port
,
333 attr
->u
.vlan_filtering
);
338 static int dsa_slave_port_attr_set(struct net_device
*dev
,
339 const struct switchdev_attr
*attr
,
340 struct switchdev_trans
*trans
)
342 struct dsa_slave_priv
*p
= netdev_priv(dev
);
343 struct dsa_switch
*ds
= p
->parent
;
347 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
348 if (switchdev_trans_ph_prepare(trans
))
349 ret
= ds
->drv
->port_stp_update
? 0 : -EOPNOTSUPP
;
351 ret
= ds
->drv
->port_stp_update(ds
, p
->port
,
354 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
:
355 ret
= dsa_slave_vlan_filtering(dev
, attr
, trans
);
365 static int dsa_slave_port_obj_add(struct net_device
*dev
,
366 const struct switchdev_obj
*obj
,
367 struct switchdev_trans
*trans
)
371 /* For the prepare phase, ensure the full set of changes is feasable in
372 * one go in order to signal a failure properly. If an operation is not
373 * supported, return -EOPNOTSUPP.
377 case SWITCHDEV_OBJ_ID_PORT_FDB
:
378 err
= dsa_slave_port_fdb_add(dev
,
379 SWITCHDEV_OBJ_PORT_FDB(obj
),
382 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
383 err
= dsa_slave_port_vlan_add(dev
,
384 SWITCHDEV_OBJ_PORT_VLAN(obj
),
395 static int dsa_slave_port_obj_del(struct net_device
*dev
,
396 const struct switchdev_obj
*obj
)
401 case SWITCHDEV_OBJ_ID_PORT_FDB
:
402 err
= dsa_slave_port_fdb_del(dev
,
403 SWITCHDEV_OBJ_PORT_FDB(obj
));
405 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
406 err
= dsa_slave_port_vlan_del(dev
,
407 SWITCHDEV_OBJ_PORT_VLAN(obj
));
417 static int dsa_slave_port_obj_dump(struct net_device
*dev
,
418 struct switchdev_obj
*obj
,
419 switchdev_obj_dump_cb_t
*cb
)
424 case SWITCHDEV_OBJ_ID_PORT_FDB
:
425 err
= dsa_slave_port_fdb_dump(dev
,
426 SWITCHDEV_OBJ_PORT_FDB(obj
),
429 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
430 err
= dsa_slave_port_vlan_dump(dev
,
431 SWITCHDEV_OBJ_PORT_VLAN(obj
),
442 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
443 struct net_device
*br
)
445 struct dsa_slave_priv
*p
= netdev_priv(dev
);
446 struct dsa_switch
*ds
= p
->parent
;
447 int ret
= -EOPNOTSUPP
;
451 if (ds
->drv
->port_join_bridge
)
452 ret
= ds
->drv
->port_join_bridge(ds
, p
->port
, br
);
457 static int dsa_slave_bridge_port_leave(struct net_device
*dev
)
459 struct dsa_slave_priv
*p
= netdev_priv(dev
);
460 struct dsa_switch
*ds
= p
->parent
;
461 int ret
= -EOPNOTSUPP
;
464 if (ds
->drv
->port_leave_bridge
)
465 ret
= ds
->drv
->port_leave_bridge(ds
, p
->port
);
467 p
->bridge_dev
= NULL
;
469 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
470 * so allow it to be in BR_STATE_FORWARDING to be kept functional
472 dsa_slave_stp_update(dev
, BR_STATE_FORWARDING
);
477 static int dsa_slave_port_attr_get(struct net_device
*dev
,
478 struct switchdev_attr
*attr
)
480 struct dsa_slave_priv
*p
= netdev_priv(dev
);
481 struct dsa_switch
*ds
= p
->parent
;
484 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID
:
485 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
486 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
495 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
498 #ifdef CONFIG_NET_POLL_CONTROLLER
500 netpoll_send_skb(p
->netpoll
, skb
);
507 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
509 struct dsa_slave_priv
*p
= netdev_priv(dev
);
510 struct sk_buff
*nskb
;
512 dev
->stats
.tx_packets
++;
513 dev
->stats
.tx_bytes
+= skb
->len
;
515 /* Transmit function may have to reallocate the original SKB */
516 nskb
= p
->xmit(skb
, dev
);
520 /* SKB for netpoll still need to be mangled with the protocol-specific
521 * tag to be successfully transmitted
523 if (unlikely(netpoll_tx_running(dev
)))
524 return dsa_netpoll_send_skb(p
, nskb
);
526 /* Queue the SKB for transmission on the parent interface, but
527 * do not modify its EtherType
529 nskb
->dev
= p
->parent
->dst
->master_netdev
;
530 dev_queue_xmit(nskb
);
535 static struct sk_buff
*dsa_slave_notag_xmit(struct sk_buff
*skb
,
536 struct net_device
*dev
)
538 /* Just return the original SKB */
543 /* ethtool operations *******************************************************/
545 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
547 struct dsa_slave_priv
*p
= netdev_priv(dev
);
551 if (p
->phy
!= NULL
) {
552 err
= phy_read_status(p
->phy
);
554 err
= phy_ethtool_gset(p
->phy
, cmd
);
561 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
563 struct dsa_slave_priv
*p
= netdev_priv(dev
);
566 return phy_ethtool_sset(p
->phy
, cmd
);
571 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
572 struct ethtool_drvinfo
*drvinfo
)
574 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
575 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
576 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
577 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
580 static int dsa_slave_get_regs_len(struct net_device
*dev
)
582 struct dsa_slave_priv
*p
= netdev_priv(dev
);
583 struct dsa_switch
*ds
= p
->parent
;
585 if (ds
->drv
->get_regs_len
)
586 return ds
->drv
->get_regs_len(ds
, p
->port
);
592 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
594 struct dsa_slave_priv
*p
= netdev_priv(dev
);
595 struct dsa_switch
*ds
= p
->parent
;
597 if (ds
->drv
->get_regs
)
598 ds
->drv
->get_regs(ds
, p
->port
, regs
, _p
);
601 static int dsa_slave_nway_reset(struct net_device
*dev
)
603 struct dsa_slave_priv
*p
= netdev_priv(dev
);
606 return genphy_restart_aneg(p
->phy
);
611 static u32
dsa_slave_get_link(struct net_device
*dev
)
613 struct dsa_slave_priv
*p
= netdev_priv(dev
);
615 if (p
->phy
!= NULL
) {
616 genphy_update_link(p
->phy
);
623 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
625 struct dsa_slave_priv
*p
= netdev_priv(dev
);
626 struct dsa_switch
*ds
= p
->parent
;
628 if (ds
->pd
->eeprom_len
)
629 return ds
->pd
->eeprom_len
;
631 if (ds
->drv
->get_eeprom_len
)
632 return ds
->drv
->get_eeprom_len(ds
);
637 static int dsa_slave_get_eeprom(struct net_device
*dev
,
638 struct ethtool_eeprom
*eeprom
, u8
*data
)
640 struct dsa_slave_priv
*p
= netdev_priv(dev
);
641 struct dsa_switch
*ds
= p
->parent
;
643 if (ds
->drv
->get_eeprom
)
644 return ds
->drv
->get_eeprom(ds
, eeprom
, data
);
649 static int dsa_slave_set_eeprom(struct net_device
*dev
,
650 struct ethtool_eeprom
*eeprom
, u8
*data
)
652 struct dsa_slave_priv
*p
= netdev_priv(dev
);
653 struct dsa_switch
*ds
= p
->parent
;
655 if (ds
->drv
->set_eeprom
)
656 return ds
->drv
->set_eeprom(ds
, eeprom
, data
);
661 static void dsa_slave_get_strings(struct net_device
*dev
,
662 uint32_t stringset
, uint8_t *data
)
664 struct dsa_slave_priv
*p
= netdev_priv(dev
);
665 struct dsa_switch
*ds
= p
->parent
;
667 if (stringset
== ETH_SS_STATS
) {
668 int len
= ETH_GSTRING_LEN
;
670 strncpy(data
, "tx_packets", len
);
671 strncpy(data
+ len
, "tx_bytes", len
);
672 strncpy(data
+ 2 * len
, "rx_packets", len
);
673 strncpy(data
+ 3 * len
, "rx_bytes", len
);
674 if (ds
->drv
->get_strings
!= NULL
)
675 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
679 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
680 struct ethtool_stats
*stats
,
683 struct dsa_slave_priv
*p
= netdev_priv(dev
);
684 struct dsa_switch
*ds
= p
->parent
;
686 data
[0] = p
->dev
->stats
.tx_packets
;
687 data
[1] = p
->dev
->stats
.tx_bytes
;
688 data
[2] = p
->dev
->stats
.rx_packets
;
689 data
[3] = p
->dev
->stats
.rx_bytes
;
690 if (ds
->drv
->get_ethtool_stats
!= NULL
)
691 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
694 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
696 struct dsa_slave_priv
*p
= netdev_priv(dev
);
697 struct dsa_switch
*ds
= p
->parent
;
699 if (sset
== ETH_SS_STATS
) {
703 if (ds
->drv
->get_sset_count
!= NULL
)
704 count
+= ds
->drv
->get_sset_count(ds
);
712 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
714 struct dsa_slave_priv
*p
= netdev_priv(dev
);
715 struct dsa_switch
*ds
= p
->parent
;
717 if (ds
->drv
->get_wol
)
718 ds
->drv
->get_wol(ds
, p
->port
, w
);
721 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
723 struct dsa_slave_priv
*p
= netdev_priv(dev
);
724 struct dsa_switch
*ds
= p
->parent
;
725 int ret
= -EOPNOTSUPP
;
727 if (ds
->drv
->set_wol
)
728 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
733 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
735 struct dsa_slave_priv
*p
= netdev_priv(dev
);
736 struct dsa_switch
*ds
= p
->parent
;
739 if (!ds
->drv
->set_eee
)
742 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
747 ret
= phy_ethtool_set_eee(p
->phy
, e
);
752 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
754 struct dsa_slave_priv
*p
= netdev_priv(dev
);
755 struct dsa_switch
*ds
= p
->parent
;
758 if (!ds
->drv
->get_eee
)
761 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
766 ret
= phy_ethtool_get_eee(p
->phy
, e
);
771 #ifdef CONFIG_NET_POLL_CONTROLLER
772 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
773 struct netpoll_info
*ni
)
775 struct dsa_slave_priv
*p
= netdev_priv(dev
);
776 struct dsa_switch
*ds
= p
->parent
;
777 struct net_device
*master
= ds
->dst
->master_netdev
;
778 struct netpoll
*netpoll
;
781 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
785 err
= __netpoll_setup(netpoll
, master
);
791 p
->netpoll
= netpoll
;
796 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
798 struct dsa_slave_priv
*p
= netdev_priv(dev
);
799 struct netpoll
*netpoll
= p
->netpoll
;
806 __netpoll_free_async(netpoll
);
809 static void dsa_slave_poll_controller(struct net_device
*dev
)
814 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
815 .get_settings
= dsa_slave_get_settings
,
816 .set_settings
= dsa_slave_set_settings
,
817 .get_drvinfo
= dsa_slave_get_drvinfo
,
818 .get_regs_len
= dsa_slave_get_regs_len
,
819 .get_regs
= dsa_slave_get_regs
,
820 .nway_reset
= dsa_slave_nway_reset
,
821 .get_link
= dsa_slave_get_link
,
822 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
823 .get_eeprom
= dsa_slave_get_eeprom
,
824 .set_eeprom
= dsa_slave_set_eeprom
,
825 .get_strings
= dsa_slave_get_strings
,
826 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
827 .get_sset_count
= dsa_slave_get_sset_count
,
828 .set_wol
= dsa_slave_set_wol
,
829 .get_wol
= dsa_slave_get_wol
,
830 .set_eee
= dsa_slave_set_eee
,
831 .get_eee
= dsa_slave_get_eee
,
834 static const struct net_device_ops dsa_slave_netdev_ops
= {
835 .ndo_open
= dsa_slave_open
,
836 .ndo_stop
= dsa_slave_close
,
837 .ndo_start_xmit
= dsa_slave_xmit
,
838 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
839 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
840 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
841 .ndo_fdb_add
= switchdev_port_fdb_add
,
842 .ndo_fdb_del
= switchdev_port_fdb_del
,
843 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
844 .ndo_do_ioctl
= dsa_slave_ioctl
,
845 .ndo_get_iflink
= dsa_slave_get_iflink
,
846 #ifdef CONFIG_NET_POLL_CONTROLLER
847 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
848 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
849 .ndo_poll_controller
= dsa_slave_poll_controller
,
851 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
852 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
853 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
856 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
857 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
858 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
859 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
860 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
861 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
864 static struct device_type dsa_type
= {
868 static void dsa_slave_adjust_link(struct net_device
*dev
)
870 struct dsa_slave_priv
*p
= netdev_priv(dev
);
871 struct dsa_switch
*ds
= p
->parent
;
872 unsigned int status_changed
= 0;
874 if (p
->old_link
!= p
->phy
->link
) {
876 p
->old_link
= p
->phy
->link
;
879 if (p
->old_duplex
!= p
->phy
->duplex
) {
881 p
->old_duplex
= p
->phy
->duplex
;
884 if (p
->old_pause
!= p
->phy
->pause
) {
886 p
->old_pause
= p
->phy
->pause
;
889 if (ds
->drv
->adjust_link
&& status_changed
)
890 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
893 phy_print_status(p
->phy
);
896 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
897 struct fixed_phy_status
*status
)
899 struct dsa_slave_priv
*p
= netdev_priv(dev
);
900 struct dsa_switch
*ds
= p
->parent
;
902 if (ds
->drv
->fixed_link_update
)
903 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
908 /* slave device setup *******************************************************/
909 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
910 struct net_device
*slave_dev
,
913 struct dsa_switch
*ds
= p
->parent
;
915 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
917 netdev_err(slave_dev
, "no phy at %d\n", addr
);
921 /* Use already configured phy mode */
922 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
923 p
->phy_interface
= p
->phy
->interface
;
924 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
930 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
931 struct net_device
*slave_dev
)
933 struct dsa_switch
*ds
= p
->parent
;
934 struct dsa_chip_data
*cd
= ds
->pd
;
935 struct device_node
*phy_dn
, *port_dn
;
936 bool phy_is_fixed
= false;
940 port_dn
= cd
->port_dn
[p
->port
];
941 mode
= of_get_phy_mode(port_dn
);
943 mode
= PHY_INTERFACE_MODE_NA
;
944 p
->phy_interface
= mode
;
946 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
947 if (of_phy_is_fixed_link(port_dn
)) {
948 /* In the case of a fixed PHY, the DT node associated
949 * to the fixed PHY is the Port DT node
951 ret
= of_phy_register_fixed_link(port_dn
);
953 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
960 if (ds
->drv
->get_phy_flags
)
961 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
964 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
966 /* If this PHY address is part of phys_mii_mask, which means
967 * that we need to divert reads and writes to/from it, then we
968 * want to bind this device using the slave MII bus created by
969 * DSA to make that happen.
971 if (!phy_is_fixed
&& phy_id
>= 0 &&
972 (ds
->phys_mii_mask
& (1 << phy_id
))) {
973 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
975 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
979 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
980 dsa_slave_adjust_link
,
986 if (p
->phy
&& phy_is_fixed
)
987 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
989 /* We could not connect to a designated PHY, so use the switch internal
993 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
995 netdev_err(slave_dev
, "failed to connect to port %d: %d\n", p
->port
, ret
);
1000 phy_attached_info(p
->phy
);
1005 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1006 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1007 struct netdev_queue
*txq
,
1010 lockdep_set_class(&txq
->_xmit_lock
,
1011 &dsa_slave_netdev_xmit_lock_key
);
1014 int dsa_slave_suspend(struct net_device
*slave_dev
)
1016 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1023 phy_suspend(p
->phy
);
1029 int dsa_slave_resume(struct net_device
*slave_dev
)
1031 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1033 netif_device_attach(slave_dev
);
1043 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
1044 int port
, char *name
)
1046 struct net_device
*master
= ds
->dst
->master_netdev
;
1047 struct net_device
*slave_dev
;
1048 struct dsa_slave_priv
*p
;
1051 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1052 NET_NAME_UNKNOWN
, ether_setup
);
1053 if (slave_dev
== NULL
)
1056 slave_dev
->features
= master
->vlan_features
;
1057 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1058 eth_hw_addr_inherit(slave_dev
, master
);
1059 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1060 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1061 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1062 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1064 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1067 SET_NETDEV_DEV(slave_dev
, parent
);
1068 slave_dev
->dev
.of_node
= ds
->pd
->port_dn
[port
];
1069 slave_dev
->vlan_features
= master
->vlan_features
;
1071 p
= netdev_priv(slave_dev
);
1076 switch (ds
->dst
->tag_protocol
) {
1077 #ifdef CONFIG_NET_DSA_TAG_DSA
1078 case DSA_TAG_PROTO_DSA
:
1079 p
->xmit
= dsa_netdev_ops
.xmit
;
1082 #ifdef CONFIG_NET_DSA_TAG_EDSA
1083 case DSA_TAG_PROTO_EDSA
:
1084 p
->xmit
= edsa_netdev_ops
.xmit
;
1087 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1088 case DSA_TAG_PROTO_TRAILER
:
1089 p
->xmit
= trailer_netdev_ops
.xmit
;
1092 #ifdef CONFIG_NET_DSA_TAG_BRCM
1093 case DSA_TAG_PROTO_BRCM
:
1094 p
->xmit
= brcm_netdev_ops
.xmit
;
1098 p
->xmit
= dsa_slave_notag_xmit
;
1106 ds
->ports
[port
] = slave_dev
;
1107 ret
= register_netdev(slave_dev
);
1109 netdev_err(master
, "error %d registering interface %s\n",
1110 ret
, slave_dev
->name
);
1111 ds
->ports
[port
] = NULL
;
1112 free_netdev(slave_dev
);
1116 netif_carrier_off(slave_dev
);
1118 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1120 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1121 unregister_netdev(slave_dev
);
1122 free_netdev(slave_dev
);
1129 void dsa_slave_destroy(struct net_device
*slave_dev
)
1131 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1133 netif_carrier_off(slave_dev
);
1135 phy_disconnect(p
->phy
);
1136 unregister_netdev(slave_dev
);
1137 free_netdev(slave_dev
);
1140 static bool dsa_slave_dev_check(struct net_device
*dev
)
1142 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1145 static int dsa_slave_master_changed(struct net_device
*dev
)
1147 struct net_device
*master
= netdev_master_upper_dev_get(dev
);
1148 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1151 if (master
&& master
->rtnl_link_ops
&&
1152 !strcmp(master
->rtnl_link_ops
->kind
, "bridge"))
1153 err
= dsa_slave_bridge_port_join(dev
, master
);
1154 else if (dsa_port_is_bridged(p
))
1155 err
= dsa_slave_bridge_port_leave(dev
);
1160 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
1161 unsigned long event
, void *ptr
)
1163 struct net_device
*dev
;
1167 case NETDEV_CHANGEUPPER
:
1168 dev
= netdev_notifier_info_to_dev(ptr
);
1169 if (!dsa_slave_dev_check(dev
))
1172 err
= dsa_slave_master_changed(dev
);
1173 if (err
&& err
!= -EOPNOTSUPP
)
1174 netdev_warn(dev
, "failed to reflect master change\n");