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_slave_port_attr_set(struct net_device
*dev
,
337 const struct switchdev_attr
*attr
,
338 struct switchdev_trans
*trans
)
343 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
344 ret
= dsa_slave_stp_state_set(dev
, attr
, trans
);
346 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
:
347 ret
= dsa_slave_vlan_filtering(dev
, attr
, trans
);
357 static int dsa_slave_port_obj_add(struct net_device
*dev
,
358 const struct switchdev_obj
*obj
,
359 struct switchdev_trans
*trans
)
363 /* For the prepare phase, ensure the full set of changes is feasable in
364 * one go in order to signal a failure properly. If an operation is not
365 * supported, return -EOPNOTSUPP.
369 case SWITCHDEV_OBJ_ID_PORT_FDB
:
370 err
= dsa_slave_port_fdb_add(dev
,
371 SWITCHDEV_OBJ_PORT_FDB(obj
),
374 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
375 err
= dsa_slave_port_vlan_add(dev
,
376 SWITCHDEV_OBJ_PORT_VLAN(obj
),
387 static int dsa_slave_port_obj_del(struct net_device
*dev
,
388 const struct switchdev_obj
*obj
)
393 case SWITCHDEV_OBJ_ID_PORT_FDB
:
394 err
= dsa_slave_port_fdb_del(dev
,
395 SWITCHDEV_OBJ_PORT_FDB(obj
));
397 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
398 err
= dsa_slave_port_vlan_del(dev
,
399 SWITCHDEV_OBJ_PORT_VLAN(obj
));
409 static int dsa_slave_port_obj_dump(struct net_device
*dev
,
410 struct switchdev_obj
*obj
,
411 switchdev_obj_dump_cb_t
*cb
)
416 case SWITCHDEV_OBJ_ID_PORT_FDB
:
417 err
= dsa_slave_port_fdb_dump(dev
,
418 SWITCHDEV_OBJ_PORT_FDB(obj
),
421 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
422 err
= dsa_slave_port_vlan_dump(dev
,
423 SWITCHDEV_OBJ_PORT_VLAN(obj
),
434 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
435 struct net_device
*br
)
437 struct dsa_slave_priv
*p
= netdev_priv(dev
);
438 struct dsa_switch
*ds
= p
->parent
;
439 int ret
= -EOPNOTSUPP
;
443 if (ds
->drv
->port_bridge_join
)
444 ret
= ds
->drv
->port_bridge_join(ds
, p
->port
, br
);
446 return ret
== -EOPNOTSUPP
? 0 : ret
;
449 static void dsa_slave_bridge_port_leave(struct net_device
*dev
)
451 struct dsa_slave_priv
*p
= netdev_priv(dev
);
452 struct dsa_switch
*ds
= p
->parent
;
455 if (ds
->drv
->port_bridge_leave
)
456 ds
->drv
->port_bridge_leave(ds
, p
->port
);
458 p
->bridge_dev
= NULL
;
460 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
461 * so allow it to be in BR_STATE_FORWARDING to be kept functional
463 if (ds
->drv
->port_stp_state_set
)
464 ds
->drv
->port_stp_state_set(ds
, p
->port
, BR_STATE_FORWARDING
);
467 static int dsa_slave_port_attr_get(struct net_device
*dev
,
468 struct switchdev_attr
*attr
)
470 struct dsa_slave_priv
*p
= netdev_priv(dev
);
471 struct dsa_switch
*ds
= p
->parent
;
474 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID
:
475 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
476 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
485 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
488 #ifdef CONFIG_NET_POLL_CONTROLLER
490 netpoll_send_skb(p
->netpoll
, skb
);
497 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
499 struct dsa_slave_priv
*p
= netdev_priv(dev
);
500 struct sk_buff
*nskb
;
502 dev
->stats
.tx_packets
++;
503 dev
->stats
.tx_bytes
+= skb
->len
;
505 /* Transmit function may have to reallocate the original SKB */
506 nskb
= p
->xmit(skb
, dev
);
510 /* SKB for netpoll still need to be mangled with the protocol-specific
511 * tag to be successfully transmitted
513 if (unlikely(netpoll_tx_running(dev
)))
514 return dsa_netpoll_send_skb(p
, nskb
);
516 /* Queue the SKB for transmission on the parent interface, but
517 * do not modify its EtherType
519 nskb
->dev
= p
->parent
->dst
->master_netdev
;
520 dev_queue_xmit(nskb
);
525 /* ethtool operations *******************************************************/
527 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
529 struct dsa_slave_priv
*p
= netdev_priv(dev
);
533 if (p
->phy
!= NULL
) {
534 err
= phy_read_status(p
->phy
);
536 err
= phy_ethtool_gset(p
->phy
, cmd
);
543 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
545 struct dsa_slave_priv
*p
= netdev_priv(dev
);
548 return phy_ethtool_sset(p
->phy
, cmd
);
553 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
554 struct ethtool_drvinfo
*drvinfo
)
556 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
557 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
558 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
559 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
562 static int dsa_slave_get_regs_len(struct net_device
*dev
)
564 struct dsa_slave_priv
*p
= netdev_priv(dev
);
565 struct dsa_switch
*ds
= p
->parent
;
567 if (ds
->drv
->get_regs_len
)
568 return ds
->drv
->get_regs_len(ds
, p
->port
);
574 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
576 struct dsa_slave_priv
*p
= netdev_priv(dev
);
577 struct dsa_switch
*ds
= p
->parent
;
579 if (ds
->drv
->get_regs
)
580 ds
->drv
->get_regs(ds
, p
->port
, regs
, _p
);
583 static int dsa_slave_nway_reset(struct net_device
*dev
)
585 struct dsa_slave_priv
*p
= netdev_priv(dev
);
588 return genphy_restart_aneg(p
->phy
);
593 static u32
dsa_slave_get_link(struct net_device
*dev
)
595 struct dsa_slave_priv
*p
= netdev_priv(dev
);
597 if (p
->phy
!= NULL
) {
598 genphy_update_link(p
->phy
);
605 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
607 struct dsa_slave_priv
*p
= netdev_priv(dev
);
608 struct dsa_switch
*ds
= p
->parent
;
610 if (ds
->cd
&& ds
->cd
->eeprom_len
)
611 return ds
->cd
->eeprom_len
;
613 if (ds
->drv
->get_eeprom_len
)
614 return ds
->drv
->get_eeprom_len(ds
);
619 static int dsa_slave_get_eeprom(struct net_device
*dev
,
620 struct ethtool_eeprom
*eeprom
, u8
*data
)
622 struct dsa_slave_priv
*p
= netdev_priv(dev
);
623 struct dsa_switch
*ds
= p
->parent
;
625 if (ds
->drv
->get_eeprom
)
626 return ds
->drv
->get_eeprom(ds
, eeprom
, data
);
631 static int dsa_slave_set_eeprom(struct net_device
*dev
,
632 struct ethtool_eeprom
*eeprom
, u8
*data
)
634 struct dsa_slave_priv
*p
= netdev_priv(dev
);
635 struct dsa_switch
*ds
= p
->parent
;
637 if (ds
->drv
->set_eeprom
)
638 return ds
->drv
->set_eeprom(ds
, eeprom
, data
);
643 static void dsa_slave_get_strings(struct net_device
*dev
,
644 uint32_t stringset
, uint8_t *data
)
646 struct dsa_slave_priv
*p
= netdev_priv(dev
);
647 struct dsa_switch
*ds
= p
->parent
;
649 if (stringset
== ETH_SS_STATS
) {
650 int len
= ETH_GSTRING_LEN
;
652 strncpy(data
, "tx_packets", len
);
653 strncpy(data
+ len
, "tx_bytes", len
);
654 strncpy(data
+ 2 * len
, "rx_packets", len
);
655 strncpy(data
+ 3 * len
, "rx_bytes", len
);
656 if (ds
->drv
->get_strings
!= NULL
)
657 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
661 static void dsa_cpu_port_get_ethtool_stats(struct net_device
*dev
,
662 struct ethtool_stats
*stats
,
665 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
666 struct dsa_switch
*ds
= dst
->ds
[0];
667 s8 cpu_port
= dst
->cpu_port
;
670 if (dst
->master_ethtool_ops
.get_sset_count
) {
671 count
= dst
->master_ethtool_ops
.get_sset_count(dev
,
673 dst
->master_ethtool_ops
.get_ethtool_stats(dev
, stats
, data
);
676 if (ds
->drv
->get_ethtool_stats
)
677 ds
->drv
->get_ethtool_stats(ds
, cpu_port
, data
+ count
);
680 static int dsa_cpu_port_get_sset_count(struct net_device
*dev
, int sset
)
682 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
683 struct dsa_switch
*ds
= dst
->ds
[0];
686 if (dst
->master_ethtool_ops
.get_sset_count
)
687 count
+= dst
->master_ethtool_ops
.get_sset_count(dev
, sset
);
689 if (sset
== ETH_SS_STATS
&& ds
->drv
->get_sset_count
)
690 count
+= ds
->drv
->get_sset_count(ds
);
695 static void dsa_cpu_port_get_strings(struct net_device
*dev
,
696 uint32_t stringset
, uint8_t *data
)
698 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
699 struct dsa_switch
*ds
= dst
->ds
[0];
700 s8 cpu_port
= dst
->cpu_port
;
701 int len
= ETH_GSTRING_LEN
;
702 int mcount
= 0, count
;
707 snprintf(pfx
, sizeof(pfx
), "p%.2d", cpu_port
);
708 /* We do not want to be NULL-terminated, since this is a prefix */
709 pfx
[sizeof(pfx
) - 1] = '_';
711 if (dst
->master_ethtool_ops
.get_sset_count
) {
712 mcount
= dst
->master_ethtool_ops
.get_sset_count(dev
,
714 dst
->master_ethtool_ops
.get_strings(dev
, stringset
, data
);
717 if (stringset
== ETH_SS_STATS
&& ds
->drv
->get_strings
) {
718 ndata
= data
+ mcount
* len
;
719 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
720 * the output after to prepend our CPU port prefix we
721 * constructed earlier
723 ds
->drv
->get_strings(ds
, cpu_port
, ndata
);
724 count
= ds
->drv
->get_sset_count(ds
);
725 for (i
= 0; i
< count
; i
++) {
726 memmove(ndata
+ (i
* len
+ sizeof(pfx
)),
727 ndata
+ i
* len
, len
- sizeof(pfx
));
728 memcpy(ndata
+ i
* len
, pfx
, sizeof(pfx
));
733 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
734 struct ethtool_stats
*stats
,
737 struct dsa_slave_priv
*p
= netdev_priv(dev
);
738 struct dsa_switch
*ds
= p
->parent
;
740 data
[0] = dev
->stats
.tx_packets
;
741 data
[1] = dev
->stats
.tx_bytes
;
742 data
[2] = dev
->stats
.rx_packets
;
743 data
[3] = dev
->stats
.rx_bytes
;
744 if (ds
->drv
->get_ethtool_stats
!= NULL
)
745 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
748 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
750 struct dsa_slave_priv
*p
= netdev_priv(dev
);
751 struct dsa_switch
*ds
= p
->parent
;
753 if (sset
== ETH_SS_STATS
) {
757 if (ds
->drv
->get_sset_count
!= NULL
)
758 count
+= ds
->drv
->get_sset_count(ds
);
766 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
768 struct dsa_slave_priv
*p
= netdev_priv(dev
);
769 struct dsa_switch
*ds
= p
->parent
;
771 if (ds
->drv
->get_wol
)
772 ds
->drv
->get_wol(ds
, p
->port
, w
);
775 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
777 struct dsa_slave_priv
*p
= netdev_priv(dev
);
778 struct dsa_switch
*ds
= p
->parent
;
779 int ret
= -EOPNOTSUPP
;
781 if (ds
->drv
->set_wol
)
782 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
787 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
789 struct dsa_slave_priv
*p
= netdev_priv(dev
);
790 struct dsa_switch
*ds
= p
->parent
;
793 if (!ds
->drv
->set_eee
)
796 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
801 ret
= phy_ethtool_set_eee(p
->phy
, e
);
806 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
808 struct dsa_slave_priv
*p
= netdev_priv(dev
);
809 struct dsa_switch
*ds
= p
->parent
;
812 if (!ds
->drv
->get_eee
)
815 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
820 ret
= phy_ethtool_get_eee(p
->phy
, e
);
825 #ifdef CONFIG_NET_POLL_CONTROLLER
826 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
827 struct netpoll_info
*ni
)
829 struct dsa_slave_priv
*p
= netdev_priv(dev
);
830 struct dsa_switch
*ds
= p
->parent
;
831 struct net_device
*master
= ds
->dst
->master_netdev
;
832 struct netpoll
*netpoll
;
835 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
839 err
= __netpoll_setup(netpoll
, master
);
845 p
->netpoll
= netpoll
;
850 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
852 struct dsa_slave_priv
*p
= netdev_priv(dev
);
853 struct netpoll
*netpoll
= p
->netpoll
;
860 __netpoll_free_async(netpoll
);
863 static void dsa_slave_poll_controller(struct net_device
*dev
)
868 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
869 .get_settings
= dsa_slave_get_settings
,
870 .set_settings
= dsa_slave_set_settings
,
871 .get_drvinfo
= dsa_slave_get_drvinfo
,
872 .get_regs_len
= dsa_slave_get_regs_len
,
873 .get_regs
= dsa_slave_get_regs
,
874 .nway_reset
= dsa_slave_nway_reset
,
875 .get_link
= dsa_slave_get_link
,
876 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
877 .get_eeprom
= dsa_slave_get_eeprom
,
878 .set_eeprom
= dsa_slave_set_eeprom
,
879 .get_strings
= dsa_slave_get_strings
,
880 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
881 .get_sset_count
= dsa_slave_get_sset_count
,
882 .set_wol
= dsa_slave_set_wol
,
883 .get_wol
= dsa_slave_get_wol
,
884 .set_eee
= dsa_slave_set_eee
,
885 .get_eee
= dsa_slave_get_eee
,
888 static struct ethtool_ops dsa_cpu_port_ethtool_ops
;
890 static const struct net_device_ops dsa_slave_netdev_ops
= {
891 .ndo_open
= dsa_slave_open
,
892 .ndo_stop
= dsa_slave_close
,
893 .ndo_start_xmit
= dsa_slave_xmit
,
894 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
895 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
896 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
897 .ndo_fdb_add
= switchdev_port_fdb_add
,
898 .ndo_fdb_del
= switchdev_port_fdb_del
,
899 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
900 .ndo_do_ioctl
= dsa_slave_ioctl
,
901 .ndo_get_iflink
= dsa_slave_get_iflink
,
902 #ifdef CONFIG_NET_POLL_CONTROLLER
903 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
904 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
905 .ndo_poll_controller
= dsa_slave_poll_controller
,
907 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
908 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
909 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
912 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
913 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
914 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
915 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
916 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
917 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
920 static struct device_type dsa_type
= {
924 static void dsa_slave_adjust_link(struct net_device
*dev
)
926 struct dsa_slave_priv
*p
= netdev_priv(dev
);
927 struct dsa_switch
*ds
= p
->parent
;
928 unsigned int status_changed
= 0;
930 if (p
->old_link
!= p
->phy
->link
) {
932 p
->old_link
= p
->phy
->link
;
935 if (p
->old_duplex
!= p
->phy
->duplex
) {
937 p
->old_duplex
= p
->phy
->duplex
;
940 if (p
->old_pause
!= p
->phy
->pause
) {
942 p
->old_pause
= p
->phy
->pause
;
945 if (ds
->drv
->adjust_link
&& status_changed
)
946 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
949 phy_print_status(p
->phy
);
952 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
953 struct fixed_phy_status
*status
)
955 struct dsa_slave_priv
*p
;
956 struct dsa_switch
*ds
;
959 p
= netdev_priv(dev
);
961 if (ds
->drv
->fixed_link_update
)
962 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
968 /* slave device setup *******************************************************/
969 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
970 struct net_device
*slave_dev
,
973 struct dsa_switch
*ds
= p
->parent
;
975 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
977 netdev_err(slave_dev
, "no phy at %d\n", addr
);
981 /* Use already configured phy mode */
982 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
983 p
->phy_interface
= p
->phy
->interface
;
984 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
990 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
991 struct net_device
*slave_dev
)
993 struct dsa_switch
*ds
= p
->parent
;
994 struct device_node
*phy_dn
, *port_dn
;
995 bool phy_is_fixed
= false;
999 port_dn
= ds
->ports
[p
->port
].dn
;
1000 mode
= of_get_phy_mode(port_dn
);
1002 mode
= PHY_INTERFACE_MODE_NA
;
1003 p
->phy_interface
= mode
;
1005 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1006 if (of_phy_is_fixed_link(port_dn
)) {
1007 /* In the case of a fixed PHY, the DT node associated
1008 * to the fixed PHY is the Port DT node
1010 ret
= of_phy_register_fixed_link(port_dn
);
1012 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
1015 phy_is_fixed
= true;
1019 if (ds
->drv
->get_phy_flags
)
1020 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
1023 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1025 /* If this PHY address is part of phys_mii_mask, which means
1026 * that we need to divert reads and writes to/from it, then we
1027 * want to bind this device using the slave MII bus created by
1028 * DSA to make that happen.
1030 if (!phy_is_fixed
&& phy_id
>= 0 &&
1031 (ds
->phys_mii_mask
& (1 << phy_id
))) {
1032 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
1034 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
1038 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1039 dsa_slave_adjust_link
,
1045 if (p
->phy
&& phy_is_fixed
)
1046 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1048 /* We could not connect to a designated PHY, so use the switch internal
1052 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
1054 netdev_err(slave_dev
, "failed to connect to port %d: %d\n", p
->port
, ret
);
1059 phy_attached_info(p
->phy
);
1064 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1065 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1066 struct netdev_queue
*txq
,
1069 lockdep_set_class(&txq
->_xmit_lock
,
1070 &dsa_slave_netdev_xmit_lock_key
);
1073 int dsa_slave_suspend(struct net_device
*slave_dev
)
1075 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1082 phy_suspend(p
->phy
);
1088 int dsa_slave_resume(struct net_device
*slave_dev
)
1090 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1092 netif_device_attach(slave_dev
);
1102 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
1103 int port
, const char *name
)
1105 struct dsa_switch_tree
*dst
= ds
->dst
;
1106 struct net_device
*master
;
1107 struct net_device
*slave_dev
;
1108 struct dsa_slave_priv
*p
;
1111 master
= ds
->dst
->master_netdev
;
1112 if (ds
->master_netdev
)
1113 master
= ds
->master_netdev
;
1115 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1116 NET_NAME_UNKNOWN
, ether_setup
);
1117 if (slave_dev
== NULL
)
1120 slave_dev
->features
= master
->vlan_features
;
1121 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1122 if (master
->ethtool_ops
!= &dsa_cpu_port_ethtool_ops
) {
1123 memcpy(&dst
->master_ethtool_ops
, master
->ethtool_ops
,
1124 sizeof(struct ethtool_ops
));
1125 memcpy(&dsa_cpu_port_ethtool_ops
, &dst
->master_ethtool_ops
,
1126 sizeof(struct ethtool_ops
));
1127 dsa_cpu_port_ethtool_ops
.get_sset_count
=
1128 dsa_cpu_port_get_sset_count
;
1129 dsa_cpu_port_ethtool_ops
.get_ethtool_stats
=
1130 dsa_cpu_port_get_ethtool_stats
;
1131 dsa_cpu_port_ethtool_ops
.get_strings
=
1132 dsa_cpu_port_get_strings
;
1133 master
->ethtool_ops
= &dsa_cpu_port_ethtool_ops
;
1135 eth_hw_addr_inherit(slave_dev
, master
);
1136 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1137 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1138 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1139 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1141 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1144 SET_NETDEV_DEV(slave_dev
, parent
);
1145 slave_dev
->dev
.of_node
= ds
->ports
[port
].dn
;
1146 slave_dev
->vlan_features
= master
->vlan_features
;
1148 p
= netdev_priv(slave_dev
);
1151 p
->xmit
= dst
->tag_ops
->xmit
;
1157 ds
->ports
[port
].netdev
= slave_dev
;
1158 ret
= register_netdev(slave_dev
);
1160 netdev_err(master
, "error %d registering interface %s\n",
1161 ret
, slave_dev
->name
);
1162 ds
->ports
[port
].netdev
= NULL
;
1163 free_netdev(slave_dev
);
1167 netif_carrier_off(slave_dev
);
1169 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1171 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1172 unregister_netdev(slave_dev
);
1173 free_netdev(slave_dev
);
1180 void dsa_slave_destroy(struct net_device
*slave_dev
)
1182 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1184 netif_carrier_off(slave_dev
);
1186 phy_disconnect(p
->phy
);
1187 unregister_netdev(slave_dev
);
1188 free_netdev(slave_dev
);
1191 static bool dsa_slave_dev_check(struct net_device
*dev
)
1193 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1196 static int dsa_slave_port_upper_event(struct net_device
*dev
,
1197 unsigned long event
, void *ptr
)
1199 struct netdev_notifier_changeupper_info
*info
= ptr
;
1200 struct net_device
*upper
= info
->upper_dev
;
1204 case NETDEV_CHANGEUPPER
:
1205 if (netif_is_bridge_master(upper
)) {
1207 err
= dsa_slave_bridge_port_join(dev
, upper
);
1209 dsa_slave_bridge_port_leave(dev
);
1215 return notifier_from_errno(err
);
1218 static int dsa_slave_port_event(struct net_device
*dev
, unsigned long event
,
1222 case NETDEV_CHANGEUPPER
:
1223 return dsa_slave_port_upper_event(dev
, event
, ptr
);
1229 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
1230 unsigned long event
, void *ptr
)
1232 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1234 if (dsa_slave_dev_check(dev
))
1235 return dsa_slave_port_event(dev
, event
, ptr
);