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
->ops
->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
->ops
->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
->ops
->port_enable
) {
102 err
= ds
->ops
->port_enable(ds
, p
->port
, p
->phy
);
107 if (ds
->ops
->port_stp_state_set
)
108 ds
->ops
->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
->ops
->port_disable
)
148 ds
->ops
->port_disable(ds
, p
->port
, p
->phy
);
150 if (ds
->ops
->port_stp_state_set
)
151 ds
->ops
->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
->ops
->port_vlan_prepare
|| !ds
->ops
->port_vlan_add
)
215 return ds
->ops
->port_vlan_prepare(ds
, p
->port
, vlan
, trans
);
218 ds
->ops
->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
->ops
->port_vlan_del
)
232 return ds
->ops
->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
->ops
->port_vlan_dump
)
243 return ds
->ops
->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
->ops
->port_fdb_prepare
|| !ds
->ops
->port_fdb_add
)
259 return ds
->ops
->port_fdb_prepare(ds
, p
->port
, fdb
, trans
);
262 ds
->ops
->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
->ops
->port_fdb_del
)
275 ret
= ds
->ops
->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
->ops
->port_fdb_dump
)
288 return ds
->ops
->port_fdb_dump(ds
, p
->port
, fdb
, cb
);
293 static int dsa_slave_port_mdb_add(struct net_device
*dev
,
294 const struct switchdev_obj_port_mdb
*mdb
,
295 struct switchdev_trans
*trans
)
297 struct dsa_slave_priv
*p
= netdev_priv(dev
);
298 struct dsa_switch
*ds
= p
->parent
;
300 if (switchdev_trans_ph_prepare(trans
)) {
301 if (!ds
->ops
->port_mdb_prepare
|| !ds
->ops
->port_mdb_add
)
304 return ds
->ops
->port_mdb_prepare(ds
, p
->port
, mdb
, trans
);
307 ds
->ops
->port_mdb_add(ds
, p
->port
, mdb
, trans
);
312 static int dsa_slave_port_mdb_del(struct net_device
*dev
,
313 const struct switchdev_obj_port_mdb
*mdb
)
315 struct dsa_slave_priv
*p
= netdev_priv(dev
);
316 struct dsa_switch
*ds
= p
->parent
;
318 if (ds
->ops
->port_mdb_del
)
319 return ds
->ops
->port_mdb_del(ds
, p
->port
, mdb
);
324 static int dsa_slave_port_mdb_dump(struct net_device
*dev
,
325 struct switchdev_obj_port_mdb
*mdb
,
326 switchdev_obj_dump_cb_t
*cb
)
328 struct dsa_slave_priv
*p
= netdev_priv(dev
);
329 struct dsa_switch
*ds
= p
->parent
;
331 if (ds
->ops
->port_mdb_dump
)
332 return ds
->ops
->port_mdb_dump(ds
, p
->port
, mdb
, cb
);
337 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
339 struct dsa_slave_priv
*p
= netdev_priv(dev
);
342 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
347 static int dsa_slave_stp_state_set(struct net_device
*dev
,
348 const struct switchdev_attr
*attr
,
349 struct switchdev_trans
*trans
)
351 struct dsa_slave_priv
*p
= netdev_priv(dev
);
352 struct dsa_switch
*ds
= p
->parent
;
354 if (switchdev_trans_ph_prepare(trans
))
355 return ds
->ops
->port_stp_state_set
? 0 : -EOPNOTSUPP
;
357 ds
->ops
->port_stp_state_set(ds
, p
->port
, attr
->u
.stp_state
);
362 static int dsa_slave_vlan_filtering(struct net_device
*dev
,
363 const struct switchdev_attr
*attr
,
364 struct switchdev_trans
*trans
)
366 struct dsa_slave_priv
*p
= netdev_priv(dev
);
367 struct dsa_switch
*ds
= p
->parent
;
369 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
370 if (switchdev_trans_ph_prepare(trans
))
373 if (ds
->ops
->port_vlan_filtering
)
374 return ds
->ops
->port_vlan_filtering(ds
, p
->port
,
375 attr
->u
.vlan_filtering
);
380 static int dsa_fastest_ageing_time(struct dsa_switch
*ds
,
381 unsigned int ageing_time
)
385 for (i
= 0; i
< DSA_MAX_PORTS
; ++i
) {
386 struct dsa_port
*dp
= &ds
->ports
[i
];
388 if (dp
&& dp
->ageing_time
&& dp
->ageing_time
< ageing_time
)
389 ageing_time
= dp
->ageing_time
;
395 static int dsa_slave_ageing_time(struct net_device
*dev
,
396 const struct switchdev_attr
*attr
,
397 struct switchdev_trans
*trans
)
399 struct dsa_slave_priv
*p
= netdev_priv(dev
);
400 struct dsa_switch
*ds
= p
->parent
;
401 unsigned long ageing_jiffies
= clock_t_to_jiffies(attr
->u
.ageing_time
);
402 unsigned int ageing_time
= jiffies_to_msecs(ageing_jiffies
);
404 /* bridge skips -EOPNOTSUPP, so skip the prepare phase */
405 if (switchdev_trans_ph_prepare(trans
))
408 /* Keep the fastest ageing time in case of multiple bridges */
409 ds
->ports
[p
->port
].ageing_time
= ageing_time
;
410 ageing_time
= dsa_fastest_ageing_time(ds
, ageing_time
);
412 if (ds
->ops
->set_ageing_time
)
413 return ds
->ops
->set_ageing_time(ds
, ageing_time
);
418 static int dsa_slave_port_attr_set(struct net_device
*dev
,
419 const struct switchdev_attr
*attr
,
420 struct switchdev_trans
*trans
)
425 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
426 ret
= dsa_slave_stp_state_set(dev
, attr
, trans
);
428 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
:
429 ret
= dsa_slave_vlan_filtering(dev
, attr
, trans
);
431 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME
:
432 ret
= dsa_slave_ageing_time(dev
, attr
, trans
);
442 static int dsa_slave_port_obj_add(struct net_device
*dev
,
443 const struct switchdev_obj
*obj
,
444 struct switchdev_trans
*trans
)
448 /* For the prepare phase, ensure the full set of changes is feasable in
449 * one go in order to signal a failure properly. If an operation is not
450 * supported, return -EOPNOTSUPP.
454 case SWITCHDEV_OBJ_ID_PORT_FDB
:
455 err
= dsa_slave_port_fdb_add(dev
,
456 SWITCHDEV_OBJ_PORT_FDB(obj
),
459 case SWITCHDEV_OBJ_ID_PORT_MDB
:
460 err
= dsa_slave_port_mdb_add(dev
, SWITCHDEV_OBJ_PORT_MDB(obj
),
463 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
464 err
= dsa_slave_port_vlan_add(dev
,
465 SWITCHDEV_OBJ_PORT_VLAN(obj
),
476 static int dsa_slave_port_obj_del(struct net_device
*dev
,
477 const struct switchdev_obj
*obj
)
482 case SWITCHDEV_OBJ_ID_PORT_FDB
:
483 err
= dsa_slave_port_fdb_del(dev
,
484 SWITCHDEV_OBJ_PORT_FDB(obj
));
486 case SWITCHDEV_OBJ_ID_PORT_MDB
:
487 err
= dsa_slave_port_mdb_del(dev
, SWITCHDEV_OBJ_PORT_MDB(obj
));
489 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
490 err
= dsa_slave_port_vlan_del(dev
,
491 SWITCHDEV_OBJ_PORT_VLAN(obj
));
501 static int dsa_slave_port_obj_dump(struct net_device
*dev
,
502 struct switchdev_obj
*obj
,
503 switchdev_obj_dump_cb_t
*cb
)
508 case SWITCHDEV_OBJ_ID_PORT_FDB
:
509 err
= dsa_slave_port_fdb_dump(dev
,
510 SWITCHDEV_OBJ_PORT_FDB(obj
),
513 case SWITCHDEV_OBJ_ID_PORT_MDB
:
514 err
= dsa_slave_port_mdb_dump(dev
, SWITCHDEV_OBJ_PORT_MDB(obj
),
517 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
518 err
= dsa_slave_port_vlan_dump(dev
,
519 SWITCHDEV_OBJ_PORT_VLAN(obj
),
530 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
531 struct net_device
*br
)
533 struct dsa_slave_priv
*p
= netdev_priv(dev
);
534 struct dsa_switch
*ds
= p
->parent
;
535 int ret
= -EOPNOTSUPP
;
539 if (ds
->ops
->port_bridge_join
)
540 ret
= ds
->ops
->port_bridge_join(ds
, p
->port
, br
);
542 return ret
== -EOPNOTSUPP
? 0 : ret
;
545 static void dsa_slave_bridge_port_leave(struct net_device
*dev
)
547 struct dsa_slave_priv
*p
= netdev_priv(dev
);
548 struct dsa_switch
*ds
= p
->parent
;
551 if (ds
->ops
->port_bridge_leave
)
552 ds
->ops
->port_bridge_leave(ds
, p
->port
);
554 p
->bridge_dev
= NULL
;
556 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
557 * so allow it to be in BR_STATE_FORWARDING to be kept functional
559 if (ds
->ops
->port_stp_state_set
)
560 ds
->ops
->port_stp_state_set(ds
, p
->port
, BR_STATE_FORWARDING
);
563 static int dsa_slave_port_attr_get(struct net_device
*dev
,
564 struct switchdev_attr
*attr
)
566 struct dsa_slave_priv
*p
= netdev_priv(dev
);
567 struct dsa_switch
*ds
= p
->parent
;
570 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID
:
571 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
572 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
581 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
584 #ifdef CONFIG_NET_POLL_CONTROLLER
586 netpoll_send_skb(p
->netpoll
, skb
);
593 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
595 struct dsa_slave_priv
*p
= netdev_priv(dev
);
596 struct sk_buff
*nskb
;
598 dev
->stats
.tx_packets
++;
599 dev
->stats
.tx_bytes
+= skb
->len
;
601 /* Transmit function may have to reallocate the original SKB */
602 nskb
= p
->xmit(skb
, dev
);
606 /* SKB for netpoll still need to be mangled with the protocol-specific
607 * tag to be successfully transmitted
609 if (unlikely(netpoll_tx_running(dev
)))
610 return dsa_netpoll_send_skb(p
, nskb
);
612 /* Queue the SKB for transmission on the parent interface, but
613 * do not modify its EtherType
615 nskb
->dev
= p
->parent
->dst
->master_netdev
;
616 dev_queue_xmit(nskb
);
621 /* ethtool operations *******************************************************/
623 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
625 struct dsa_slave_priv
*p
= netdev_priv(dev
);
629 if (p
->phy
!= NULL
) {
630 err
= phy_read_status(p
->phy
);
632 err
= phy_ethtool_gset(p
->phy
, cmd
);
639 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
641 struct dsa_slave_priv
*p
= netdev_priv(dev
);
644 return phy_ethtool_sset(p
->phy
, cmd
);
649 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
650 struct ethtool_drvinfo
*drvinfo
)
652 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
653 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
654 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
655 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
658 static int dsa_slave_get_regs_len(struct net_device
*dev
)
660 struct dsa_slave_priv
*p
= netdev_priv(dev
);
661 struct dsa_switch
*ds
= p
->parent
;
663 if (ds
->ops
->get_regs_len
)
664 return ds
->ops
->get_regs_len(ds
, p
->port
);
670 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
672 struct dsa_slave_priv
*p
= netdev_priv(dev
);
673 struct dsa_switch
*ds
= p
->parent
;
675 if (ds
->ops
->get_regs
)
676 ds
->ops
->get_regs(ds
, p
->port
, regs
, _p
);
679 static int dsa_slave_nway_reset(struct net_device
*dev
)
681 struct dsa_slave_priv
*p
= netdev_priv(dev
);
684 return genphy_restart_aneg(p
->phy
);
689 static u32
dsa_slave_get_link(struct net_device
*dev
)
691 struct dsa_slave_priv
*p
= netdev_priv(dev
);
693 if (p
->phy
!= NULL
) {
694 genphy_update_link(p
->phy
);
701 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
703 struct dsa_slave_priv
*p
= netdev_priv(dev
);
704 struct dsa_switch
*ds
= p
->parent
;
706 if (ds
->cd
&& ds
->cd
->eeprom_len
)
707 return ds
->cd
->eeprom_len
;
709 if (ds
->ops
->get_eeprom_len
)
710 return ds
->ops
->get_eeprom_len(ds
);
715 static int dsa_slave_get_eeprom(struct net_device
*dev
,
716 struct ethtool_eeprom
*eeprom
, u8
*data
)
718 struct dsa_slave_priv
*p
= netdev_priv(dev
);
719 struct dsa_switch
*ds
= p
->parent
;
721 if (ds
->ops
->get_eeprom
)
722 return ds
->ops
->get_eeprom(ds
, eeprom
, data
);
727 static int dsa_slave_set_eeprom(struct net_device
*dev
,
728 struct ethtool_eeprom
*eeprom
, u8
*data
)
730 struct dsa_slave_priv
*p
= netdev_priv(dev
);
731 struct dsa_switch
*ds
= p
->parent
;
733 if (ds
->ops
->set_eeprom
)
734 return ds
->ops
->set_eeprom(ds
, eeprom
, data
);
739 static void dsa_slave_get_strings(struct net_device
*dev
,
740 uint32_t stringset
, uint8_t *data
)
742 struct dsa_slave_priv
*p
= netdev_priv(dev
);
743 struct dsa_switch
*ds
= p
->parent
;
745 if (stringset
== ETH_SS_STATS
) {
746 int len
= ETH_GSTRING_LEN
;
748 strncpy(data
, "tx_packets", len
);
749 strncpy(data
+ len
, "tx_bytes", len
);
750 strncpy(data
+ 2 * len
, "rx_packets", len
);
751 strncpy(data
+ 3 * len
, "rx_bytes", len
);
752 if (ds
->ops
->get_strings
)
753 ds
->ops
->get_strings(ds
, p
->port
, data
+ 4 * len
);
757 static void dsa_cpu_port_get_ethtool_stats(struct net_device
*dev
,
758 struct ethtool_stats
*stats
,
761 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
762 struct dsa_switch
*ds
= dst
->ds
[0];
763 s8 cpu_port
= dst
->cpu_port
;
766 if (dst
->master_ethtool_ops
.get_sset_count
) {
767 count
= dst
->master_ethtool_ops
.get_sset_count(dev
,
769 dst
->master_ethtool_ops
.get_ethtool_stats(dev
, stats
, data
);
772 if (ds
->ops
->get_ethtool_stats
)
773 ds
->ops
->get_ethtool_stats(ds
, cpu_port
, data
+ count
);
776 static int dsa_cpu_port_get_sset_count(struct net_device
*dev
, int sset
)
778 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
779 struct dsa_switch
*ds
= dst
->ds
[0];
782 if (dst
->master_ethtool_ops
.get_sset_count
)
783 count
+= dst
->master_ethtool_ops
.get_sset_count(dev
, sset
);
785 if (sset
== ETH_SS_STATS
&& ds
->ops
->get_sset_count
)
786 count
+= ds
->ops
->get_sset_count(ds
);
791 static void dsa_cpu_port_get_strings(struct net_device
*dev
,
792 uint32_t stringset
, uint8_t *data
)
794 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
795 struct dsa_switch
*ds
= dst
->ds
[0];
796 s8 cpu_port
= dst
->cpu_port
;
797 int len
= ETH_GSTRING_LEN
;
798 int mcount
= 0, count
;
803 snprintf(pfx
, sizeof(pfx
), "p%.2d", cpu_port
);
804 /* We do not want to be NULL-terminated, since this is a prefix */
805 pfx
[sizeof(pfx
) - 1] = '_';
807 if (dst
->master_ethtool_ops
.get_sset_count
) {
808 mcount
= dst
->master_ethtool_ops
.get_sset_count(dev
,
810 dst
->master_ethtool_ops
.get_strings(dev
, stringset
, data
);
813 if (stringset
== ETH_SS_STATS
&& ds
->ops
->get_strings
) {
814 ndata
= data
+ mcount
* len
;
815 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
816 * the output after to prepend our CPU port prefix we
817 * constructed earlier
819 ds
->ops
->get_strings(ds
, cpu_port
, ndata
);
820 count
= ds
->ops
->get_sset_count(ds
);
821 for (i
= 0; i
< count
; i
++) {
822 memmove(ndata
+ (i
* len
+ sizeof(pfx
)),
823 ndata
+ i
* len
, len
- sizeof(pfx
));
824 memcpy(ndata
+ i
* len
, pfx
, sizeof(pfx
));
829 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
830 struct ethtool_stats
*stats
,
833 struct dsa_slave_priv
*p
= netdev_priv(dev
);
834 struct dsa_switch
*ds
= p
->parent
;
836 data
[0] = dev
->stats
.tx_packets
;
837 data
[1] = dev
->stats
.tx_bytes
;
838 data
[2] = dev
->stats
.rx_packets
;
839 data
[3] = dev
->stats
.rx_bytes
;
840 if (ds
->ops
->get_ethtool_stats
)
841 ds
->ops
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
844 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
846 struct dsa_slave_priv
*p
= netdev_priv(dev
);
847 struct dsa_switch
*ds
= p
->parent
;
849 if (sset
== ETH_SS_STATS
) {
853 if (ds
->ops
->get_sset_count
)
854 count
+= ds
->ops
->get_sset_count(ds
);
862 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
864 struct dsa_slave_priv
*p
= netdev_priv(dev
);
865 struct dsa_switch
*ds
= p
->parent
;
867 if (ds
->ops
->get_wol
)
868 ds
->ops
->get_wol(ds
, p
->port
, w
);
871 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
873 struct dsa_slave_priv
*p
= netdev_priv(dev
);
874 struct dsa_switch
*ds
= p
->parent
;
875 int ret
= -EOPNOTSUPP
;
877 if (ds
->ops
->set_wol
)
878 ret
= ds
->ops
->set_wol(ds
, p
->port
, w
);
883 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
885 struct dsa_slave_priv
*p
= netdev_priv(dev
);
886 struct dsa_switch
*ds
= p
->parent
;
889 if (!ds
->ops
->set_eee
)
892 ret
= ds
->ops
->set_eee(ds
, p
->port
, p
->phy
, e
);
897 ret
= phy_ethtool_set_eee(p
->phy
, e
);
902 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
904 struct dsa_slave_priv
*p
= netdev_priv(dev
);
905 struct dsa_switch
*ds
= p
->parent
;
908 if (!ds
->ops
->get_eee
)
911 ret
= ds
->ops
->get_eee(ds
, p
->port
, e
);
916 ret
= phy_ethtool_get_eee(p
->phy
, e
);
921 #ifdef CONFIG_NET_POLL_CONTROLLER
922 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
923 struct netpoll_info
*ni
)
925 struct dsa_slave_priv
*p
= netdev_priv(dev
);
926 struct dsa_switch
*ds
= p
->parent
;
927 struct net_device
*master
= ds
->dst
->master_netdev
;
928 struct netpoll
*netpoll
;
931 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
935 err
= __netpoll_setup(netpoll
, master
);
941 p
->netpoll
= netpoll
;
946 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
948 struct dsa_slave_priv
*p
= netdev_priv(dev
);
949 struct netpoll
*netpoll
= p
->netpoll
;
956 __netpoll_free_async(netpoll
);
959 static void dsa_slave_poll_controller(struct net_device
*dev
)
964 void dsa_cpu_port_ethtool_init(struct ethtool_ops
*ops
)
966 ops
->get_sset_count
= dsa_cpu_port_get_sset_count
;
967 ops
->get_ethtool_stats
= dsa_cpu_port_get_ethtool_stats
;
968 ops
->get_strings
= dsa_cpu_port_get_strings
;
971 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
972 .get_settings
= dsa_slave_get_settings
,
973 .set_settings
= dsa_slave_set_settings
,
974 .get_drvinfo
= dsa_slave_get_drvinfo
,
975 .get_regs_len
= dsa_slave_get_regs_len
,
976 .get_regs
= dsa_slave_get_regs
,
977 .nway_reset
= dsa_slave_nway_reset
,
978 .get_link
= dsa_slave_get_link
,
979 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
980 .get_eeprom
= dsa_slave_get_eeprom
,
981 .set_eeprom
= dsa_slave_set_eeprom
,
982 .get_strings
= dsa_slave_get_strings
,
983 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
984 .get_sset_count
= dsa_slave_get_sset_count
,
985 .set_wol
= dsa_slave_set_wol
,
986 .get_wol
= dsa_slave_get_wol
,
987 .set_eee
= dsa_slave_set_eee
,
988 .get_eee
= dsa_slave_get_eee
,
991 static const struct net_device_ops dsa_slave_netdev_ops
= {
992 .ndo_open
= dsa_slave_open
,
993 .ndo_stop
= dsa_slave_close
,
994 .ndo_start_xmit
= dsa_slave_xmit
,
995 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
996 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
997 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
998 .ndo_fdb_add
= switchdev_port_fdb_add
,
999 .ndo_fdb_del
= switchdev_port_fdb_del
,
1000 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
1001 .ndo_do_ioctl
= dsa_slave_ioctl
,
1002 .ndo_get_iflink
= dsa_slave_get_iflink
,
1003 #ifdef CONFIG_NET_POLL_CONTROLLER
1004 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
1005 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
1006 .ndo_poll_controller
= dsa_slave_poll_controller
,
1008 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
1009 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
1010 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
1013 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
1014 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
1015 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
1016 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
1017 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
1018 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
1021 static struct device_type dsa_type
= {
1025 static void dsa_slave_adjust_link(struct net_device
*dev
)
1027 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1028 struct dsa_switch
*ds
= p
->parent
;
1029 unsigned int status_changed
= 0;
1031 if (p
->old_link
!= p
->phy
->link
) {
1033 p
->old_link
= p
->phy
->link
;
1036 if (p
->old_duplex
!= p
->phy
->duplex
) {
1038 p
->old_duplex
= p
->phy
->duplex
;
1041 if (p
->old_pause
!= p
->phy
->pause
) {
1043 p
->old_pause
= p
->phy
->pause
;
1046 if (ds
->ops
->adjust_link
&& status_changed
)
1047 ds
->ops
->adjust_link(ds
, p
->port
, p
->phy
);
1050 phy_print_status(p
->phy
);
1053 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
1054 struct fixed_phy_status
*status
)
1056 struct dsa_slave_priv
*p
;
1057 struct dsa_switch
*ds
;
1060 p
= netdev_priv(dev
);
1062 if (ds
->ops
->fixed_link_update
)
1063 ds
->ops
->fixed_link_update(ds
, p
->port
, status
);
1069 /* slave device setup *******************************************************/
1070 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
1071 struct net_device
*slave_dev
,
1074 struct dsa_switch
*ds
= p
->parent
;
1076 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
1078 netdev_err(slave_dev
, "no phy at %d\n", addr
);
1082 /* Use already configured phy mode */
1083 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
1084 p
->phy_interface
= p
->phy
->interface
;
1085 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
1091 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
1092 struct net_device
*slave_dev
)
1094 struct dsa_switch
*ds
= p
->parent
;
1095 struct device_node
*phy_dn
, *port_dn
;
1096 bool phy_is_fixed
= false;
1100 port_dn
= ds
->ports
[p
->port
].dn
;
1101 mode
= of_get_phy_mode(port_dn
);
1103 mode
= PHY_INTERFACE_MODE_NA
;
1104 p
->phy_interface
= mode
;
1106 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1107 if (of_phy_is_fixed_link(port_dn
)) {
1108 /* In the case of a fixed PHY, the DT node associated
1109 * to the fixed PHY is the Port DT node
1111 ret
= of_phy_register_fixed_link(port_dn
);
1113 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
1116 phy_is_fixed
= true;
1120 if (ds
->ops
->get_phy_flags
)
1121 phy_flags
= ds
->ops
->get_phy_flags(ds
, p
->port
);
1124 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1126 /* If this PHY address is part of phys_mii_mask, which means
1127 * that we need to divert reads and writes to/from it, then we
1128 * want to bind this device using the slave MII bus created by
1129 * DSA to make that happen.
1131 if (!phy_is_fixed
&& phy_id
>= 0 &&
1132 (ds
->phys_mii_mask
& (1 << phy_id
))) {
1133 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
1135 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
1139 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1140 dsa_slave_adjust_link
,
1146 if (p
->phy
&& phy_is_fixed
)
1147 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1149 /* We could not connect to a designated PHY, so use the switch internal
1153 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
1155 netdev_err(slave_dev
, "failed to connect to port %d: %d\n", p
->port
, ret
);
1160 phy_attached_info(p
->phy
);
1165 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1166 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1167 struct netdev_queue
*txq
,
1170 lockdep_set_class(&txq
->_xmit_lock
,
1171 &dsa_slave_netdev_xmit_lock_key
);
1174 int dsa_slave_suspend(struct net_device
*slave_dev
)
1176 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1183 phy_suspend(p
->phy
);
1189 int dsa_slave_resume(struct net_device
*slave_dev
)
1191 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1193 netif_device_attach(slave_dev
);
1203 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
1204 int port
, const char *name
)
1206 struct dsa_switch_tree
*dst
= ds
->dst
;
1207 struct net_device
*master
;
1208 struct net_device
*slave_dev
;
1209 struct dsa_slave_priv
*p
;
1212 master
= ds
->dst
->master_netdev
;
1213 if (ds
->master_netdev
)
1214 master
= ds
->master_netdev
;
1216 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1217 NET_NAME_UNKNOWN
, ether_setup
);
1218 if (slave_dev
== NULL
)
1221 slave_dev
->features
= master
->vlan_features
;
1222 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1223 eth_hw_addr_inherit(slave_dev
, master
);
1224 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1225 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1226 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1227 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1229 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1232 SET_NETDEV_DEV(slave_dev
, parent
);
1233 slave_dev
->dev
.of_node
= ds
->ports
[port
].dn
;
1234 slave_dev
->vlan_features
= master
->vlan_features
;
1236 p
= netdev_priv(slave_dev
);
1239 p
->xmit
= dst
->tag_ops
->xmit
;
1245 ds
->ports
[port
].netdev
= slave_dev
;
1246 ret
= register_netdev(slave_dev
);
1248 netdev_err(master
, "error %d registering interface %s\n",
1249 ret
, slave_dev
->name
);
1250 ds
->ports
[port
].netdev
= NULL
;
1251 free_netdev(slave_dev
);
1255 netif_carrier_off(slave_dev
);
1257 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1259 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1260 unregister_netdev(slave_dev
);
1261 free_netdev(slave_dev
);
1268 void dsa_slave_destroy(struct net_device
*slave_dev
)
1270 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1272 netif_carrier_off(slave_dev
);
1274 phy_disconnect(p
->phy
);
1275 unregister_netdev(slave_dev
);
1276 free_netdev(slave_dev
);
1279 static bool dsa_slave_dev_check(struct net_device
*dev
)
1281 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1284 static int dsa_slave_port_upper_event(struct net_device
*dev
,
1285 unsigned long event
, void *ptr
)
1287 struct netdev_notifier_changeupper_info
*info
= ptr
;
1288 struct net_device
*upper
= info
->upper_dev
;
1292 case NETDEV_CHANGEUPPER
:
1293 if (netif_is_bridge_master(upper
)) {
1295 err
= dsa_slave_bridge_port_join(dev
, upper
);
1297 dsa_slave_bridge_port_leave(dev
);
1303 return notifier_from_errno(err
);
1306 static int dsa_slave_port_event(struct net_device
*dev
, unsigned long event
,
1310 case NETDEV_CHANGEUPPER
:
1311 return dsa_slave_port_upper_event(dev
, event
, ptr
);
1317 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
1318 unsigned long event
, void *ptr
)
1320 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1322 if (dsa_slave_dev_check(dev
))
1323 return dsa_slave_port_event(dev
, event
, ptr
);