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_bridge_check_vlan_range(struct dsa_switch
*ds
,
205 const struct net_device
*bridge
,
206 u16 vid_begin
, u16 vid_end
)
208 struct dsa_slave_priv
*p
;
209 struct net_device
*dev
, *vlan_br
;
210 DECLARE_BITMAP(members
, DSA_MAX_PORTS
);
211 DECLARE_BITMAP(untagged
, DSA_MAX_PORTS
);
215 if (!ds
->drv
->vlan_getnext
|| !vid_begin
)
221 err
= ds
->drv
->vlan_getnext(ds
, &vid
, members
, untagged
);
228 member
= find_first_bit(members
, DSA_MAX_PORTS
);
229 if (member
== DSA_MAX_PORTS
)
232 dev
= ds
->ports
[member
];
233 p
= netdev_priv(dev
);
234 vlan_br
= p
->bridge_dev
;
235 if (vlan_br
== bridge
)
238 netdev_dbg(vlan_br
, "hardware VLAN %d already in use\n", vid
);
240 } while (vid
< vid_end
);
242 return err
== -ENOENT
? 0 : err
;
245 static int dsa_slave_port_vlan_add(struct net_device
*dev
,
246 const struct switchdev_obj_port_vlan
*vlan
,
247 struct switchdev_trans
*trans
)
249 struct dsa_slave_priv
*p
= netdev_priv(dev
);
250 struct dsa_switch
*ds
= p
->parent
;
253 if (switchdev_trans_ph_prepare(trans
)) {
254 if (!ds
->drv
->port_vlan_prepare
|| !ds
->drv
->port_vlan_add
)
257 /* If the requested port doesn't belong to the same bridge as
258 * the VLAN members, fallback to software VLAN (hopefully).
260 err
= dsa_bridge_check_vlan_range(ds
, p
->bridge_dev
,
266 err
= ds
->drv
->port_vlan_prepare(ds
, p
->port
, vlan
, trans
);
270 err
= ds
->drv
->port_vlan_add(ds
, p
->port
, vlan
, trans
);
278 static int dsa_slave_port_vlan_del(struct net_device
*dev
,
279 const struct switchdev_obj_port_vlan
*vlan
)
281 struct dsa_slave_priv
*p
= netdev_priv(dev
);
282 struct dsa_switch
*ds
= p
->parent
;
284 if (!ds
->drv
->port_vlan_del
)
287 return ds
->drv
->port_vlan_del(ds
, p
->port
, vlan
);
290 static int dsa_slave_port_vlan_dump(struct net_device
*dev
,
291 struct switchdev_obj_port_vlan
*vlan
,
292 switchdev_obj_dump_cb_t
*cb
)
294 struct dsa_slave_priv
*p
= netdev_priv(dev
);
295 struct dsa_switch
*ds
= p
->parent
;
296 DECLARE_BITMAP(members
, DSA_MAX_PORTS
);
297 DECLARE_BITMAP(untagged
, DSA_MAX_PORTS
);
301 if (!ds
->drv
->vlan_getnext
|| !ds
->drv
->port_pvid_get
)
304 err
= ds
->drv
->port_pvid_get(ds
, p
->port
, &pvid
);
309 err
= ds
->drv
->vlan_getnext(ds
, &vid
, members
, untagged
);
313 if (!test_bit(p
->port
, members
))
316 memset(vlan
, 0, sizeof(*vlan
));
317 vlan
->vid_begin
= vlan
->vid_end
= vid
;
320 vlan
->flags
|= BRIDGE_VLAN_INFO_PVID
;
322 if (test_bit(p
->port
, untagged
))
323 vlan
->flags
|= BRIDGE_VLAN_INFO_UNTAGGED
;
325 err
= cb(&vlan
->obj
);
330 return err
== -ENOENT
? 0 : err
;
333 static int dsa_slave_port_fdb_add(struct net_device
*dev
,
334 const struct switchdev_obj_port_fdb
*fdb
,
335 struct switchdev_trans
*trans
)
337 struct dsa_slave_priv
*p
= netdev_priv(dev
);
338 struct dsa_switch
*ds
= p
->parent
;
341 if (!ds
->drv
->port_fdb_prepare
|| !ds
->drv
->port_fdb_add
)
344 if (switchdev_trans_ph_prepare(trans
))
345 ret
= ds
->drv
->port_fdb_prepare(ds
, p
->port
, fdb
, trans
);
347 ret
= ds
->drv
->port_fdb_add(ds
, p
->port
, fdb
, trans
);
352 static int dsa_slave_port_fdb_del(struct net_device
*dev
,
353 const struct switchdev_obj_port_fdb
*fdb
)
355 struct dsa_slave_priv
*p
= netdev_priv(dev
);
356 struct dsa_switch
*ds
= p
->parent
;
357 int ret
= -EOPNOTSUPP
;
359 if (ds
->drv
->port_fdb_del
)
360 ret
= ds
->drv
->port_fdb_del(ds
, p
->port
, fdb
);
365 static int dsa_slave_port_fdb_dump(struct net_device
*dev
,
366 struct switchdev_obj_port_fdb
*fdb
,
367 switchdev_obj_dump_cb_t
*cb
)
369 struct dsa_slave_priv
*p
= netdev_priv(dev
);
370 struct dsa_switch
*ds
= p
->parent
;
372 if (ds
->drv
->port_fdb_dump
)
373 return ds
->drv
->port_fdb_dump(ds
, p
->port
, fdb
, cb
);
378 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
380 struct dsa_slave_priv
*p
= netdev_priv(dev
);
383 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
388 /* Return a bitmask of all ports being currently bridged within a given bridge
389 * device. Note that on leave, the mask will still return the bitmask of ports
390 * currently bridged, prior to port removal, and this is exactly what we want.
392 static u32
dsa_slave_br_port_mask(struct dsa_switch
*ds
,
393 struct net_device
*bridge
)
395 struct dsa_slave_priv
*p
;
399 for (port
= 0; port
< DSA_MAX_PORTS
; port
++) {
400 if (!dsa_is_port_initialized(ds
, port
))
403 p
= netdev_priv(ds
->ports
[port
]);
405 if (ds
->ports
[port
]->priv_flags
& IFF_BRIDGE_PORT
&&
406 p
->bridge_dev
== bridge
)
413 static int dsa_slave_stp_update(struct net_device
*dev
, u8 state
)
415 struct dsa_slave_priv
*p
= netdev_priv(dev
);
416 struct dsa_switch
*ds
= p
->parent
;
417 int ret
= -EOPNOTSUPP
;
419 if (ds
->drv
->port_stp_update
)
420 ret
= ds
->drv
->port_stp_update(ds
, p
->port
, state
);
425 static int dsa_slave_port_attr_set(struct net_device
*dev
,
426 const struct switchdev_attr
*attr
,
427 struct switchdev_trans
*trans
)
429 struct dsa_slave_priv
*p
= netdev_priv(dev
);
430 struct dsa_switch
*ds
= p
->parent
;
434 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
435 if (switchdev_trans_ph_prepare(trans
))
436 ret
= ds
->drv
->port_stp_update
? 0 : -EOPNOTSUPP
;
438 ret
= ds
->drv
->port_stp_update(ds
, p
->port
,
449 static int dsa_slave_port_obj_add(struct net_device
*dev
,
450 const struct switchdev_obj
*obj
,
451 struct switchdev_trans
*trans
)
455 /* For the prepare phase, ensure the full set of changes is feasable in
456 * one go in order to signal a failure properly. If an operation is not
457 * supported, return -EOPNOTSUPP.
461 case SWITCHDEV_OBJ_ID_PORT_FDB
:
462 err
= dsa_slave_port_fdb_add(dev
,
463 SWITCHDEV_OBJ_PORT_FDB(obj
),
466 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
467 err
= dsa_slave_port_vlan_add(dev
,
468 SWITCHDEV_OBJ_PORT_VLAN(obj
),
479 static int dsa_slave_port_obj_del(struct net_device
*dev
,
480 const struct switchdev_obj
*obj
)
485 case SWITCHDEV_OBJ_ID_PORT_FDB
:
486 err
= dsa_slave_port_fdb_del(dev
,
487 SWITCHDEV_OBJ_PORT_FDB(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_VLAN
:
514 err
= dsa_slave_port_vlan_dump(dev
,
515 SWITCHDEV_OBJ_PORT_VLAN(obj
),
526 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
527 struct net_device
*br
)
529 struct dsa_slave_priv
*p
= netdev_priv(dev
);
530 struct dsa_switch
*ds
= p
->parent
;
531 int ret
= -EOPNOTSUPP
;
535 if (ds
->drv
->port_join_bridge
)
536 ret
= ds
->drv
->port_join_bridge(ds
, p
->port
,
537 dsa_slave_br_port_mask(ds
, br
));
542 static int dsa_slave_bridge_port_leave(struct net_device
*dev
)
544 struct dsa_slave_priv
*p
= netdev_priv(dev
);
545 struct dsa_switch
*ds
= p
->parent
;
546 int ret
= -EOPNOTSUPP
;
549 if (ds
->drv
->port_leave_bridge
)
550 ret
= ds
->drv
->port_leave_bridge(ds
, p
->port
,
551 dsa_slave_br_port_mask(ds
, p
->bridge_dev
));
553 p
->bridge_dev
= NULL
;
555 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
556 * so allow it to be in BR_STATE_FORWARDING to be kept functional
558 dsa_slave_stp_update(dev
, 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 static struct sk_buff
*dsa_slave_notag_xmit(struct sk_buff
*skb
,
622 struct net_device
*dev
)
624 /* Just return the original SKB */
629 /* ethtool operations *******************************************************/
631 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
633 struct dsa_slave_priv
*p
= netdev_priv(dev
);
637 if (p
->phy
!= NULL
) {
638 err
= phy_read_status(p
->phy
);
640 err
= phy_ethtool_gset(p
->phy
, cmd
);
647 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
649 struct dsa_slave_priv
*p
= netdev_priv(dev
);
652 return phy_ethtool_sset(p
->phy
, cmd
);
657 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
658 struct ethtool_drvinfo
*drvinfo
)
660 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
661 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
662 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
663 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
666 static int dsa_slave_get_regs_len(struct net_device
*dev
)
668 struct dsa_slave_priv
*p
= netdev_priv(dev
);
669 struct dsa_switch
*ds
= p
->parent
;
671 if (ds
->drv
->get_regs_len
)
672 return ds
->drv
->get_regs_len(ds
, p
->port
);
678 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
680 struct dsa_slave_priv
*p
= netdev_priv(dev
);
681 struct dsa_switch
*ds
= p
->parent
;
683 if (ds
->drv
->get_regs
)
684 ds
->drv
->get_regs(ds
, p
->port
, regs
, _p
);
687 static int dsa_slave_nway_reset(struct net_device
*dev
)
689 struct dsa_slave_priv
*p
= netdev_priv(dev
);
692 return genphy_restart_aneg(p
->phy
);
697 static u32
dsa_slave_get_link(struct net_device
*dev
)
699 struct dsa_slave_priv
*p
= netdev_priv(dev
);
701 if (p
->phy
!= NULL
) {
702 genphy_update_link(p
->phy
);
709 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
711 struct dsa_slave_priv
*p
= netdev_priv(dev
);
712 struct dsa_switch
*ds
= p
->parent
;
714 if (ds
->pd
->eeprom_len
)
715 return ds
->pd
->eeprom_len
;
717 if (ds
->drv
->get_eeprom_len
)
718 return ds
->drv
->get_eeprom_len(ds
);
723 static int dsa_slave_get_eeprom(struct net_device
*dev
,
724 struct ethtool_eeprom
*eeprom
, u8
*data
)
726 struct dsa_slave_priv
*p
= netdev_priv(dev
);
727 struct dsa_switch
*ds
= p
->parent
;
729 if (ds
->drv
->get_eeprom
)
730 return ds
->drv
->get_eeprom(ds
, eeprom
, data
);
735 static int dsa_slave_set_eeprom(struct net_device
*dev
,
736 struct ethtool_eeprom
*eeprom
, u8
*data
)
738 struct dsa_slave_priv
*p
= netdev_priv(dev
);
739 struct dsa_switch
*ds
= p
->parent
;
741 if (ds
->drv
->set_eeprom
)
742 return ds
->drv
->set_eeprom(ds
, eeprom
, data
);
747 static void dsa_slave_get_strings(struct net_device
*dev
,
748 uint32_t stringset
, uint8_t *data
)
750 struct dsa_slave_priv
*p
= netdev_priv(dev
);
751 struct dsa_switch
*ds
= p
->parent
;
753 if (stringset
== ETH_SS_STATS
) {
754 int len
= ETH_GSTRING_LEN
;
756 strncpy(data
, "tx_packets", len
);
757 strncpy(data
+ len
, "tx_bytes", len
);
758 strncpy(data
+ 2 * len
, "rx_packets", len
);
759 strncpy(data
+ 3 * len
, "rx_bytes", len
);
760 if (ds
->drv
->get_strings
!= NULL
)
761 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
765 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
766 struct ethtool_stats
*stats
,
769 struct dsa_slave_priv
*p
= netdev_priv(dev
);
770 struct dsa_switch
*ds
= p
->parent
;
772 data
[0] = p
->dev
->stats
.tx_packets
;
773 data
[1] = p
->dev
->stats
.tx_bytes
;
774 data
[2] = p
->dev
->stats
.rx_packets
;
775 data
[3] = p
->dev
->stats
.rx_bytes
;
776 if (ds
->drv
->get_ethtool_stats
!= NULL
)
777 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
780 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
782 struct dsa_slave_priv
*p
= netdev_priv(dev
);
783 struct dsa_switch
*ds
= p
->parent
;
785 if (sset
== ETH_SS_STATS
) {
789 if (ds
->drv
->get_sset_count
!= NULL
)
790 count
+= ds
->drv
->get_sset_count(ds
);
798 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
800 struct dsa_slave_priv
*p
= netdev_priv(dev
);
801 struct dsa_switch
*ds
= p
->parent
;
803 if (ds
->drv
->get_wol
)
804 ds
->drv
->get_wol(ds
, p
->port
, w
);
807 static int dsa_slave_set_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
;
811 int ret
= -EOPNOTSUPP
;
813 if (ds
->drv
->set_wol
)
814 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
819 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
821 struct dsa_slave_priv
*p
= netdev_priv(dev
);
822 struct dsa_switch
*ds
= p
->parent
;
825 if (!ds
->drv
->set_eee
)
828 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
833 ret
= phy_ethtool_set_eee(p
->phy
, e
);
838 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
840 struct dsa_slave_priv
*p
= netdev_priv(dev
);
841 struct dsa_switch
*ds
= p
->parent
;
844 if (!ds
->drv
->get_eee
)
847 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
852 ret
= phy_ethtool_get_eee(p
->phy
, e
);
857 #ifdef CONFIG_NET_POLL_CONTROLLER
858 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
859 struct netpoll_info
*ni
)
861 struct dsa_slave_priv
*p
= netdev_priv(dev
);
862 struct dsa_switch
*ds
= p
->parent
;
863 struct net_device
*master
= ds
->dst
->master_netdev
;
864 struct netpoll
*netpoll
;
867 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
871 err
= __netpoll_setup(netpoll
, master
);
877 p
->netpoll
= netpoll
;
882 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
884 struct dsa_slave_priv
*p
= netdev_priv(dev
);
885 struct netpoll
*netpoll
= p
->netpoll
;
892 __netpoll_free_async(netpoll
);
895 static void dsa_slave_poll_controller(struct net_device
*dev
)
900 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
901 .get_settings
= dsa_slave_get_settings
,
902 .set_settings
= dsa_slave_set_settings
,
903 .get_drvinfo
= dsa_slave_get_drvinfo
,
904 .get_regs_len
= dsa_slave_get_regs_len
,
905 .get_regs
= dsa_slave_get_regs
,
906 .nway_reset
= dsa_slave_nway_reset
,
907 .get_link
= dsa_slave_get_link
,
908 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
909 .get_eeprom
= dsa_slave_get_eeprom
,
910 .set_eeprom
= dsa_slave_set_eeprom
,
911 .get_strings
= dsa_slave_get_strings
,
912 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
913 .get_sset_count
= dsa_slave_get_sset_count
,
914 .set_wol
= dsa_slave_set_wol
,
915 .get_wol
= dsa_slave_get_wol
,
916 .set_eee
= dsa_slave_set_eee
,
917 .get_eee
= dsa_slave_get_eee
,
920 static const struct net_device_ops dsa_slave_netdev_ops
= {
921 .ndo_open
= dsa_slave_open
,
922 .ndo_stop
= dsa_slave_close
,
923 .ndo_start_xmit
= dsa_slave_xmit
,
924 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
925 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
926 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
927 .ndo_fdb_add
= switchdev_port_fdb_add
,
928 .ndo_fdb_del
= switchdev_port_fdb_del
,
929 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
930 .ndo_do_ioctl
= dsa_slave_ioctl
,
931 .ndo_get_iflink
= dsa_slave_get_iflink
,
932 #ifdef CONFIG_NET_POLL_CONTROLLER
933 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
934 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
935 .ndo_poll_controller
= dsa_slave_poll_controller
,
937 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
938 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
939 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
942 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
943 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
944 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
945 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
946 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
947 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
950 static struct device_type dsa_type
= {
954 static void dsa_slave_adjust_link(struct net_device
*dev
)
956 struct dsa_slave_priv
*p
= netdev_priv(dev
);
957 struct dsa_switch
*ds
= p
->parent
;
958 unsigned int status_changed
= 0;
960 if (p
->old_link
!= p
->phy
->link
) {
962 p
->old_link
= p
->phy
->link
;
965 if (p
->old_duplex
!= p
->phy
->duplex
) {
967 p
->old_duplex
= p
->phy
->duplex
;
970 if (p
->old_pause
!= p
->phy
->pause
) {
972 p
->old_pause
= p
->phy
->pause
;
975 if (ds
->drv
->adjust_link
&& status_changed
)
976 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
979 phy_print_status(p
->phy
);
982 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
983 struct fixed_phy_status
*status
)
985 struct dsa_slave_priv
*p
= netdev_priv(dev
);
986 struct dsa_switch
*ds
= p
->parent
;
988 if (ds
->drv
->fixed_link_update
)
989 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
994 /* slave device setup *******************************************************/
995 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
996 struct net_device
*slave_dev
,
999 struct dsa_switch
*ds
= p
->parent
;
1001 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
1003 netdev_err(slave_dev
, "no phy at %d\n", addr
);
1007 /* Use already configured phy mode */
1008 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
1009 p
->phy_interface
= p
->phy
->interface
;
1010 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
1016 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
1017 struct net_device
*slave_dev
)
1019 struct dsa_switch
*ds
= p
->parent
;
1020 struct dsa_chip_data
*cd
= ds
->pd
;
1021 struct device_node
*phy_dn
, *port_dn
;
1022 bool phy_is_fixed
= false;
1026 port_dn
= cd
->port_dn
[p
->port
];
1027 mode
= of_get_phy_mode(port_dn
);
1029 mode
= PHY_INTERFACE_MODE_NA
;
1030 p
->phy_interface
= mode
;
1032 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1033 if (of_phy_is_fixed_link(port_dn
)) {
1034 /* In the case of a fixed PHY, the DT node associated
1035 * to the fixed PHY is the Port DT node
1037 ret
= of_phy_register_fixed_link(port_dn
);
1039 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
1042 phy_is_fixed
= true;
1046 if (ds
->drv
->get_phy_flags
)
1047 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
1050 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1052 /* If this PHY address is part of phys_mii_mask, which means
1053 * that we need to divert reads and writes to/from it, then we
1054 * want to bind this device using the slave MII bus created by
1055 * DSA to make that happen.
1057 if (!phy_is_fixed
&& phy_id
>= 0 &&
1058 (ds
->phys_mii_mask
& (1 << phy_id
))) {
1059 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
1061 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
1065 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1066 dsa_slave_adjust_link
,
1072 if (p
->phy
&& phy_is_fixed
)
1073 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1075 /* We could not connect to a designated PHY, so use the switch internal
1079 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
1081 netdev_err(slave_dev
, "failed to connect to port %d: %d\n", p
->port
, ret
);
1086 phy_attached_info(p
->phy
);
1091 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1092 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1093 struct netdev_queue
*txq
,
1096 lockdep_set_class(&txq
->_xmit_lock
,
1097 &dsa_slave_netdev_xmit_lock_key
);
1100 int dsa_slave_suspend(struct net_device
*slave_dev
)
1102 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1109 phy_suspend(p
->phy
);
1115 int dsa_slave_resume(struct net_device
*slave_dev
)
1117 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1119 netif_device_attach(slave_dev
);
1129 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
1130 int port
, char *name
)
1132 struct net_device
*master
= ds
->dst
->master_netdev
;
1133 struct net_device
*slave_dev
;
1134 struct dsa_slave_priv
*p
;
1137 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1138 NET_NAME_UNKNOWN
, ether_setup
);
1139 if (slave_dev
== NULL
)
1142 slave_dev
->features
= master
->vlan_features
;
1143 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1144 eth_hw_addr_inherit(slave_dev
, master
);
1145 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1146 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1147 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1148 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1150 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1153 SET_NETDEV_DEV(slave_dev
, parent
);
1154 slave_dev
->dev
.of_node
= ds
->pd
->port_dn
[port
];
1155 slave_dev
->vlan_features
= master
->vlan_features
;
1157 p
= netdev_priv(slave_dev
);
1162 switch (ds
->dst
->tag_protocol
) {
1163 #ifdef CONFIG_NET_DSA_TAG_DSA
1164 case DSA_TAG_PROTO_DSA
:
1165 p
->xmit
= dsa_netdev_ops
.xmit
;
1168 #ifdef CONFIG_NET_DSA_TAG_EDSA
1169 case DSA_TAG_PROTO_EDSA
:
1170 p
->xmit
= edsa_netdev_ops
.xmit
;
1173 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1174 case DSA_TAG_PROTO_TRAILER
:
1175 p
->xmit
= trailer_netdev_ops
.xmit
;
1178 #ifdef CONFIG_NET_DSA_TAG_BRCM
1179 case DSA_TAG_PROTO_BRCM
:
1180 p
->xmit
= brcm_netdev_ops
.xmit
;
1184 p
->xmit
= dsa_slave_notag_xmit
;
1192 ds
->ports
[port
] = slave_dev
;
1193 ret
= register_netdev(slave_dev
);
1195 netdev_err(master
, "error %d registering interface %s\n",
1196 ret
, slave_dev
->name
);
1197 phy_disconnect(p
->phy
);
1198 ds
->ports
[port
] = NULL
;
1199 free_netdev(slave_dev
);
1203 netif_carrier_off(slave_dev
);
1205 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1207 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1208 free_netdev(slave_dev
);
1215 void dsa_slave_destroy(struct net_device
*slave_dev
)
1217 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1219 netif_carrier_off(slave_dev
);
1221 phy_disconnect(p
->phy
);
1222 unregister_netdev(slave_dev
);
1223 free_netdev(slave_dev
);
1226 static bool dsa_slave_dev_check(struct net_device
*dev
)
1228 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1231 static int dsa_slave_master_changed(struct net_device
*dev
)
1233 struct net_device
*master
= netdev_master_upper_dev_get(dev
);
1234 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1237 if (master
&& master
->rtnl_link_ops
&&
1238 !strcmp(master
->rtnl_link_ops
->kind
, "bridge"))
1239 err
= dsa_slave_bridge_port_join(dev
, master
);
1240 else if (dsa_port_is_bridged(p
))
1241 err
= dsa_slave_bridge_port_leave(dev
);
1246 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
1247 unsigned long event
, void *ptr
)
1249 struct net_device
*dev
;
1253 case NETDEV_CHANGEUPPER
:
1254 dev
= netdev_notifier_info_to_dev(ptr
);
1255 if (!dsa_slave_dev_check(dev
))
1258 err
= dsa_slave_master_changed(dev
);
1259 if (err
&& err
!= -EOPNOTSUPP
)
1260 netdev_warn(dev
, "failed to reflect master change\n");