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 <net/rtnetlink.h>
19 #include <net/switchdev.h>
20 #include <linux/if_bridge.h>
21 #include <linux/netpoll.h>
24 /* slave mii_bus handling ***************************************************/
25 static int dsa_slave_phy_read(struct mii_bus
*bus
, int addr
, int reg
)
27 struct dsa_switch
*ds
= bus
->priv
;
29 if (ds
->phys_mii_mask
& (1 << addr
))
30 return ds
->drv
->phy_read(ds
, addr
, reg
);
35 static int dsa_slave_phy_write(struct mii_bus
*bus
, int addr
, int reg
, u16 val
)
37 struct dsa_switch
*ds
= bus
->priv
;
39 if (ds
->phys_mii_mask
& (1 << addr
))
40 return ds
->drv
->phy_write(ds
, addr
, reg
, val
);
45 void dsa_slave_mii_bus_init(struct dsa_switch
*ds
)
47 ds
->slave_mii_bus
->priv
= (void *)ds
;
48 ds
->slave_mii_bus
->name
= "dsa slave smi";
49 ds
->slave_mii_bus
->read
= dsa_slave_phy_read
;
50 ds
->slave_mii_bus
->write
= dsa_slave_phy_write
;
51 snprintf(ds
->slave_mii_bus
->id
, MII_BUS_ID_SIZE
, "dsa-%d:%.2x",
52 ds
->index
, ds
->pd
->sw_addr
);
53 ds
->slave_mii_bus
->parent
= ds
->master_dev
;
54 ds
->slave_mii_bus
->phy_mask
= ~ds
->phys_mii_mask
;
58 /* slave device handling ****************************************************/
59 static int dsa_slave_get_iflink(const struct net_device
*dev
)
61 struct dsa_slave_priv
*p
= netdev_priv(dev
);
63 return p
->parent
->dst
->master_netdev
->ifindex
;
66 static inline bool dsa_port_is_bridged(struct dsa_slave_priv
*p
)
68 return !!p
->bridge_dev
;
71 static int dsa_slave_open(struct net_device
*dev
)
73 struct dsa_slave_priv
*p
= netdev_priv(dev
);
74 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
75 struct dsa_switch
*ds
= p
->parent
;
76 u8 stp_state
= dsa_port_is_bridged(p
) ?
77 BR_STATE_BLOCKING
: BR_STATE_FORWARDING
;
80 if (!(master
->flags
& IFF_UP
))
83 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
)) {
84 err
= dev_uc_add(master
, dev
->dev_addr
);
89 if (dev
->flags
& IFF_ALLMULTI
) {
90 err
= dev_set_allmulti(master
, 1);
94 if (dev
->flags
& IFF_PROMISC
) {
95 err
= dev_set_promiscuity(master
, 1);
100 if (ds
->drv
->port_enable
) {
101 err
= ds
->drv
->port_enable(ds
, p
->port
, p
->phy
);
106 if (ds
->drv
->port_stp_update
)
107 ds
->drv
->port_stp_update(ds
, p
->port
, stp_state
);
115 if (dev
->flags
& IFF_PROMISC
)
116 dev_set_promiscuity(master
, -1);
118 if (dev
->flags
& IFF_ALLMULTI
)
119 dev_set_allmulti(master
, -1);
121 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
122 dev_uc_del(master
, dev
->dev_addr
);
127 static int dsa_slave_close(struct net_device
*dev
)
129 struct dsa_slave_priv
*p
= netdev_priv(dev
);
130 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
131 struct dsa_switch
*ds
= p
->parent
;
136 dev_mc_unsync(master
, dev
);
137 dev_uc_unsync(master
, dev
);
138 if (dev
->flags
& IFF_ALLMULTI
)
139 dev_set_allmulti(master
, -1);
140 if (dev
->flags
& IFF_PROMISC
)
141 dev_set_promiscuity(master
, -1);
143 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
144 dev_uc_del(master
, dev
->dev_addr
);
146 if (ds
->drv
->port_disable
)
147 ds
->drv
->port_disable(ds
, p
->port
, p
->phy
);
149 if (ds
->drv
->port_stp_update
)
150 ds
->drv
->port_stp_update(ds
, p
->port
, BR_STATE_DISABLED
);
155 static void dsa_slave_change_rx_flags(struct net_device
*dev
, int change
)
157 struct dsa_slave_priv
*p
= netdev_priv(dev
);
158 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
160 if (change
& IFF_ALLMULTI
)
161 dev_set_allmulti(master
, dev
->flags
& IFF_ALLMULTI
? 1 : -1);
162 if (change
& IFF_PROMISC
)
163 dev_set_promiscuity(master
, dev
->flags
& IFF_PROMISC
? 1 : -1);
166 static void dsa_slave_set_rx_mode(struct net_device
*dev
)
168 struct dsa_slave_priv
*p
= netdev_priv(dev
);
169 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
171 dev_mc_sync(master
, dev
);
172 dev_uc_sync(master
, dev
);
175 static int dsa_slave_set_mac_address(struct net_device
*dev
, void *a
)
177 struct dsa_slave_priv
*p
= netdev_priv(dev
);
178 struct net_device
*master
= p
->parent
->dst
->master_netdev
;
179 struct sockaddr
*addr
= a
;
182 if (!is_valid_ether_addr(addr
->sa_data
))
183 return -EADDRNOTAVAIL
;
185 if (!(dev
->flags
& IFF_UP
))
188 if (!ether_addr_equal(addr
->sa_data
, master
->dev_addr
)) {
189 err
= dev_uc_add(master
, addr
->sa_data
);
194 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
195 dev_uc_del(master
, dev
->dev_addr
);
198 ether_addr_copy(dev
->dev_addr
, addr
->sa_data
);
203 static int dsa_bridge_check_vlan_range(struct dsa_switch
*ds
,
204 const struct net_device
*bridge
,
205 u16 vid_begin
, u16 vid_end
)
207 struct dsa_slave_priv
*p
;
208 struct net_device
*dev
, *vlan_br
;
209 DECLARE_BITMAP(members
, DSA_MAX_PORTS
);
210 DECLARE_BITMAP(untagged
, DSA_MAX_PORTS
);
214 if (!ds
->drv
->vlan_getnext
|| !vid_begin
)
220 err
= ds
->drv
->vlan_getnext(ds
, &vid
, members
, untagged
);
227 member
= find_first_bit(members
, DSA_MAX_PORTS
);
228 if (member
== DSA_MAX_PORTS
)
231 dev
= ds
->ports
[member
];
232 p
= netdev_priv(dev
);
233 vlan_br
= p
->bridge_dev
;
234 if (vlan_br
== bridge
)
237 netdev_dbg(vlan_br
, "hardware VLAN %d already in use\n", vid
);
239 } while (vid
< vid_end
);
241 return err
== -ENOENT
? 0 : err
;
244 static int dsa_slave_port_vlan_add(struct net_device
*dev
,
245 struct switchdev_obj
*obj
)
247 struct switchdev_obj_vlan
*vlan
= &obj
->u
.vlan
;
248 struct dsa_slave_priv
*p
= netdev_priv(dev
);
249 struct dsa_switch
*ds
= p
->parent
;
253 switch (obj
->trans
) {
254 case SWITCHDEV_TRANS_PREPARE
:
255 if (!ds
->drv
->port_vlan_add
|| !ds
->drv
->port_pvid_set
)
258 /* If the requested port doesn't belong to the same bridge as
259 * the VLAN members, fallback to software VLAN (hopefully).
261 err
= dsa_bridge_check_vlan_range(ds
, p
->bridge_dev
,
267 case SWITCHDEV_TRANS_COMMIT
:
268 for (vid
= vlan
->vid_begin
; vid
<= vlan
->vid_end
; ++vid
) {
269 err
= ds
->drv
->port_vlan_add(ds
, p
->port
, vid
,
271 BRIDGE_VLAN_INFO_UNTAGGED
);
272 if (!err
&& vlan
->flags
& BRIDGE_VLAN_INFO_PVID
)
273 err
= ds
->drv
->port_pvid_set(ds
, p
->port
, vid
);
285 static int dsa_slave_port_vlan_del(struct net_device
*dev
,
286 struct switchdev_obj
*obj
)
288 struct switchdev_obj_vlan
*vlan
= &obj
->u
.vlan
;
289 struct dsa_slave_priv
*p
= netdev_priv(dev
);
290 struct dsa_switch
*ds
= p
->parent
;
294 if (!ds
->drv
->port_vlan_del
)
297 for (vid
= vlan
->vid_begin
; vid
<= vlan
->vid_end
; ++vid
) {
298 err
= ds
->drv
->port_vlan_del(ds
, p
->port
, vid
);
306 static int dsa_slave_port_vlan_dump(struct net_device
*dev
,
307 struct switchdev_obj
*obj
)
309 struct switchdev_obj_vlan
*vlan
= &obj
->u
.vlan
;
310 struct dsa_slave_priv
*p
= netdev_priv(dev
);
311 struct dsa_switch
*ds
= p
->parent
;
312 DECLARE_BITMAP(members
, DSA_MAX_PORTS
);
313 DECLARE_BITMAP(untagged
, DSA_MAX_PORTS
);
317 if (!ds
->drv
->vlan_getnext
|| !ds
->drv
->port_pvid_get
)
320 err
= ds
->drv
->port_pvid_get(ds
, p
->port
, &pvid
);
325 err
= ds
->drv
->vlan_getnext(ds
, &vid
, members
, untagged
);
329 if (!test_bit(p
->port
, members
))
332 memset(vlan
, 0, sizeof(*vlan
));
333 vlan
->vid_begin
= vlan
->vid_end
= vid
;
336 vlan
->flags
|= BRIDGE_VLAN_INFO_PVID
;
338 if (test_bit(p
->port
, untagged
))
339 vlan
->flags
|= BRIDGE_VLAN_INFO_UNTAGGED
;
341 err
= obj
->cb(dev
, obj
);
346 return err
== -ENOENT
? 0 : err
;
349 static int dsa_slave_port_fdb_add(struct net_device
*dev
,
350 struct switchdev_obj
*obj
)
352 struct switchdev_obj_fdb
*fdb
= &obj
->u
.fdb
;
353 struct dsa_slave_priv
*p
= netdev_priv(dev
);
354 struct dsa_switch
*ds
= p
->parent
;
355 int ret
= -EOPNOTSUPP
;
357 if (obj
->trans
== SWITCHDEV_TRANS_PREPARE
)
358 ret
= ds
->drv
->port_fdb_add
? 0 : -EOPNOTSUPP
;
359 else if (obj
->trans
== SWITCHDEV_TRANS_COMMIT
)
360 ret
= ds
->drv
->port_fdb_add(ds
, p
->port
, fdb
->addr
, fdb
->vid
);
365 static int dsa_slave_port_fdb_del(struct net_device
*dev
,
366 struct switchdev_obj
*obj
)
368 struct switchdev_obj_fdb
*fdb
= &obj
->u
.fdb
;
369 struct dsa_slave_priv
*p
= netdev_priv(dev
);
370 struct dsa_switch
*ds
= p
->parent
;
371 int ret
= -EOPNOTSUPP
;
373 if (ds
->drv
->port_fdb_del
)
374 ret
= ds
->drv
->port_fdb_del(ds
, p
->port
, fdb
->addr
, fdb
->vid
);
379 static int dsa_slave_port_fdb_dump(struct net_device
*dev
,
380 struct switchdev_obj
*obj
)
382 struct dsa_slave_priv
*p
= netdev_priv(dev
);
383 struct dsa_switch
*ds
= p
->parent
;
384 unsigned char addr
[ETH_ALEN
] = { 0 };
388 if (!ds
->drv
->port_fdb_getnext
)
394 ret
= ds
->drv
->port_fdb_getnext(ds
, p
->port
, addr
, &vid
,
399 obj
->u
.fdb
.addr
= addr
;
400 obj
->u
.fdb
.vid
= vid
;
401 obj
->u
.fdb
.ndm_state
= is_static
? NUD_NOARP
: NUD_REACHABLE
;
403 ret
= obj
->cb(dev
, obj
);
408 return ret
== -ENOENT
? 0 : ret
;
411 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
413 struct dsa_slave_priv
*p
= netdev_priv(dev
);
416 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
421 /* Return a bitmask of all ports being currently bridged within a given bridge
422 * device. Note that on leave, the mask will still return the bitmask of ports
423 * currently bridged, prior to port removal, and this is exactly what we want.
425 static u32
dsa_slave_br_port_mask(struct dsa_switch
*ds
,
426 struct net_device
*bridge
)
428 struct dsa_slave_priv
*p
;
432 for (port
= 0; port
< DSA_MAX_PORTS
; port
++) {
433 if (!dsa_is_port_initialized(ds
, port
))
436 p
= netdev_priv(ds
->ports
[port
]);
438 if (ds
->ports
[port
]->priv_flags
& IFF_BRIDGE_PORT
&&
439 p
->bridge_dev
== bridge
)
446 static int dsa_slave_stp_update(struct net_device
*dev
, u8 state
)
448 struct dsa_slave_priv
*p
= netdev_priv(dev
);
449 struct dsa_switch
*ds
= p
->parent
;
450 int ret
= -EOPNOTSUPP
;
452 if (ds
->drv
->port_stp_update
)
453 ret
= ds
->drv
->port_stp_update(ds
, p
->port
, state
);
458 static int dsa_slave_port_attr_set(struct net_device
*dev
,
459 struct switchdev_attr
*attr
)
464 case SWITCHDEV_ATTR_PORT_STP_STATE
:
465 if (attr
->trans
== SWITCHDEV_TRANS_COMMIT
)
466 ret
= dsa_slave_stp_update(dev
, attr
->u
.stp_state
);
476 static int dsa_slave_port_obj_add(struct net_device
*dev
,
477 struct switchdev_obj
*obj
)
481 /* For the prepare phase, ensure the full set of changes is feasable in
482 * one go in order to signal a failure properly. If an operation is not
483 * supported, return -EOPNOTSUPP.
487 case SWITCHDEV_OBJ_PORT_FDB
:
488 err
= dsa_slave_port_fdb_add(dev
, obj
);
490 case SWITCHDEV_OBJ_PORT_VLAN
:
491 err
= dsa_slave_port_vlan_add(dev
, obj
);
501 static int dsa_slave_port_obj_del(struct net_device
*dev
,
502 struct switchdev_obj
*obj
)
507 case SWITCHDEV_OBJ_PORT_FDB
:
508 err
= dsa_slave_port_fdb_del(dev
, obj
);
510 case SWITCHDEV_OBJ_PORT_VLAN
:
511 err
= dsa_slave_port_vlan_del(dev
, obj
);
521 static int dsa_slave_port_obj_dump(struct net_device
*dev
,
522 struct switchdev_obj
*obj
)
527 case SWITCHDEV_OBJ_PORT_FDB
:
528 err
= dsa_slave_port_fdb_dump(dev
, obj
);
530 case SWITCHDEV_OBJ_PORT_VLAN
:
531 err
= dsa_slave_port_vlan_dump(dev
, obj
);
541 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
542 struct net_device
*br
)
544 struct dsa_slave_priv
*p
= netdev_priv(dev
);
545 struct dsa_switch
*ds
= p
->parent
;
546 int ret
= -EOPNOTSUPP
;
550 if (ds
->drv
->port_join_bridge
)
551 ret
= ds
->drv
->port_join_bridge(ds
, p
->port
,
552 dsa_slave_br_port_mask(ds
, br
));
557 static int dsa_slave_bridge_port_leave(struct net_device
*dev
)
559 struct dsa_slave_priv
*p
= netdev_priv(dev
);
560 struct dsa_switch
*ds
= p
->parent
;
561 int ret
= -EOPNOTSUPP
;
564 if (ds
->drv
->port_leave_bridge
)
565 ret
= ds
->drv
->port_leave_bridge(ds
, p
->port
,
566 dsa_slave_br_port_mask(ds
, p
->bridge_dev
));
568 p
->bridge_dev
= NULL
;
570 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
571 * so allow it to be in BR_STATE_FORWARDING to be kept functional
573 dsa_slave_stp_update(dev
, BR_STATE_FORWARDING
);
578 static int dsa_slave_port_attr_get(struct net_device
*dev
,
579 struct switchdev_attr
*attr
)
581 struct dsa_slave_priv
*p
= netdev_priv(dev
);
582 struct dsa_switch
*ds
= p
->parent
;
585 case SWITCHDEV_ATTR_PORT_PARENT_ID
:
586 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
587 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
596 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
599 #ifdef CONFIG_NET_POLL_CONTROLLER
601 netpoll_send_skb(p
->netpoll
, skb
);
608 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
610 struct dsa_slave_priv
*p
= netdev_priv(dev
);
611 struct sk_buff
*nskb
;
613 dev
->stats
.tx_packets
++;
614 dev
->stats
.tx_bytes
+= skb
->len
;
616 /* Transmit function may have to reallocate the original SKB */
617 nskb
= p
->xmit(skb
, dev
);
621 /* SKB for netpoll still need to be mangled with the protocol-specific
622 * tag to be successfully transmitted
624 if (unlikely(netpoll_tx_running(dev
)))
625 return dsa_netpoll_send_skb(p
, nskb
);
627 /* Queue the SKB for transmission on the parent interface, but
628 * do not modify its EtherType
630 nskb
->dev
= p
->parent
->dst
->master_netdev
;
631 dev_queue_xmit(nskb
);
636 static struct sk_buff
*dsa_slave_notag_xmit(struct sk_buff
*skb
,
637 struct net_device
*dev
)
639 /* Just return the original SKB */
644 /* ethtool operations *******************************************************/
646 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
648 struct dsa_slave_priv
*p
= netdev_priv(dev
);
652 if (p
->phy
!= NULL
) {
653 err
= phy_read_status(p
->phy
);
655 err
= phy_ethtool_gset(p
->phy
, cmd
);
662 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
664 struct dsa_slave_priv
*p
= netdev_priv(dev
);
667 return phy_ethtool_sset(p
->phy
, cmd
);
672 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
673 struct ethtool_drvinfo
*drvinfo
)
675 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
676 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
677 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
678 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
681 static int dsa_slave_get_regs_len(struct net_device
*dev
)
683 struct dsa_slave_priv
*p
= netdev_priv(dev
);
684 struct dsa_switch
*ds
= p
->parent
;
686 if (ds
->drv
->get_regs_len
)
687 return ds
->drv
->get_regs_len(ds
, p
->port
);
693 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
695 struct dsa_slave_priv
*p
= netdev_priv(dev
);
696 struct dsa_switch
*ds
= p
->parent
;
698 if (ds
->drv
->get_regs
)
699 ds
->drv
->get_regs(ds
, p
->port
, regs
, _p
);
702 static int dsa_slave_nway_reset(struct net_device
*dev
)
704 struct dsa_slave_priv
*p
= netdev_priv(dev
);
707 return genphy_restart_aneg(p
->phy
);
712 static u32
dsa_slave_get_link(struct net_device
*dev
)
714 struct dsa_slave_priv
*p
= netdev_priv(dev
);
716 if (p
->phy
!= NULL
) {
717 genphy_update_link(p
->phy
);
724 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
726 struct dsa_slave_priv
*p
= netdev_priv(dev
);
727 struct dsa_switch
*ds
= p
->parent
;
729 if (ds
->pd
->eeprom_len
)
730 return ds
->pd
->eeprom_len
;
732 if (ds
->drv
->get_eeprom_len
)
733 return ds
->drv
->get_eeprom_len(ds
);
738 static int dsa_slave_get_eeprom(struct net_device
*dev
,
739 struct ethtool_eeprom
*eeprom
, u8
*data
)
741 struct dsa_slave_priv
*p
= netdev_priv(dev
);
742 struct dsa_switch
*ds
= p
->parent
;
744 if (ds
->drv
->get_eeprom
)
745 return ds
->drv
->get_eeprom(ds
, eeprom
, data
);
750 static int dsa_slave_set_eeprom(struct net_device
*dev
,
751 struct ethtool_eeprom
*eeprom
, u8
*data
)
753 struct dsa_slave_priv
*p
= netdev_priv(dev
);
754 struct dsa_switch
*ds
= p
->parent
;
756 if (ds
->drv
->set_eeprom
)
757 return ds
->drv
->set_eeprom(ds
, eeprom
, data
);
762 static void dsa_slave_get_strings(struct net_device
*dev
,
763 uint32_t stringset
, uint8_t *data
)
765 struct dsa_slave_priv
*p
= netdev_priv(dev
);
766 struct dsa_switch
*ds
= p
->parent
;
768 if (stringset
== ETH_SS_STATS
) {
769 int len
= ETH_GSTRING_LEN
;
771 strncpy(data
, "tx_packets", len
);
772 strncpy(data
+ len
, "tx_bytes", len
);
773 strncpy(data
+ 2 * len
, "rx_packets", len
);
774 strncpy(data
+ 3 * len
, "rx_bytes", len
);
775 if (ds
->drv
->get_strings
!= NULL
)
776 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
780 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
781 struct ethtool_stats
*stats
,
784 struct dsa_slave_priv
*p
= netdev_priv(dev
);
785 struct dsa_switch
*ds
= p
->parent
;
787 data
[0] = p
->dev
->stats
.tx_packets
;
788 data
[1] = p
->dev
->stats
.tx_bytes
;
789 data
[2] = p
->dev
->stats
.rx_packets
;
790 data
[3] = p
->dev
->stats
.rx_bytes
;
791 if (ds
->drv
->get_ethtool_stats
!= NULL
)
792 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
795 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
797 struct dsa_slave_priv
*p
= netdev_priv(dev
);
798 struct dsa_switch
*ds
= p
->parent
;
800 if (sset
== ETH_SS_STATS
) {
804 if (ds
->drv
->get_sset_count
!= NULL
)
805 count
+= ds
->drv
->get_sset_count(ds
);
813 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
815 struct dsa_slave_priv
*p
= netdev_priv(dev
);
816 struct dsa_switch
*ds
= p
->parent
;
818 if (ds
->drv
->get_wol
)
819 ds
->drv
->get_wol(ds
, p
->port
, w
);
822 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
824 struct dsa_slave_priv
*p
= netdev_priv(dev
);
825 struct dsa_switch
*ds
= p
->parent
;
826 int ret
= -EOPNOTSUPP
;
828 if (ds
->drv
->set_wol
)
829 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
834 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
836 struct dsa_slave_priv
*p
= netdev_priv(dev
);
837 struct dsa_switch
*ds
= p
->parent
;
840 if (!ds
->drv
->set_eee
)
843 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
848 ret
= phy_ethtool_set_eee(p
->phy
, e
);
853 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
855 struct dsa_slave_priv
*p
= netdev_priv(dev
);
856 struct dsa_switch
*ds
= p
->parent
;
859 if (!ds
->drv
->get_eee
)
862 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
867 ret
= phy_ethtool_get_eee(p
->phy
, e
);
872 #ifdef CONFIG_NET_POLL_CONTROLLER
873 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
874 struct netpoll_info
*ni
)
876 struct dsa_slave_priv
*p
= netdev_priv(dev
);
877 struct dsa_switch
*ds
= p
->parent
;
878 struct net_device
*master
= ds
->dst
->master_netdev
;
879 struct netpoll
*netpoll
;
882 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
886 err
= __netpoll_setup(netpoll
, master
);
892 p
->netpoll
= netpoll
;
897 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
899 struct dsa_slave_priv
*p
= netdev_priv(dev
);
900 struct netpoll
*netpoll
= p
->netpoll
;
907 __netpoll_free_async(netpoll
);
910 static void dsa_slave_poll_controller(struct net_device
*dev
)
915 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
916 .get_settings
= dsa_slave_get_settings
,
917 .set_settings
= dsa_slave_set_settings
,
918 .get_drvinfo
= dsa_slave_get_drvinfo
,
919 .get_regs_len
= dsa_slave_get_regs_len
,
920 .get_regs
= dsa_slave_get_regs
,
921 .nway_reset
= dsa_slave_nway_reset
,
922 .get_link
= dsa_slave_get_link
,
923 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
924 .get_eeprom
= dsa_slave_get_eeprom
,
925 .set_eeprom
= dsa_slave_set_eeprom
,
926 .get_strings
= dsa_slave_get_strings
,
927 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
928 .get_sset_count
= dsa_slave_get_sset_count
,
929 .set_wol
= dsa_slave_set_wol
,
930 .get_wol
= dsa_slave_get_wol
,
931 .set_eee
= dsa_slave_set_eee
,
932 .get_eee
= dsa_slave_get_eee
,
935 static const struct net_device_ops dsa_slave_netdev_ops
= {
936 .ndo_open
= dsa_slave_open
,
937 .ndo_stop
= dsa_slave_close
,
938 .ndo_start_xmit
= dsa_slave_xmit
,
939 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
940 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
941 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
942 .ndo_fdb_add
= switchdev_port_fdb_add
,
943 .ndo_fdb_del
= switchdev_port_fdb_del
,
944 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
945 .ndo_do_ioctl
= dsa_slave_ioctl
,
946 .ndo_get_iflink
= dsa_slave_get_iflink
,
947 #ifdef CONFIG_NET_POLL_CONTROLLER
948 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
949 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
950 .ndo_poll_controller
= dsa_slave_poll_controller
,
952 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
953 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
954 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
957 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
958 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
959 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
960 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
961 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
962 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
965 static void dsa_slave_adjust_link(struct net_device
*dev
)
967 struct dsa_slave_priv
*p
= netdev_priv(dev
);
968 struct dsa_switch
*ds
= p
->parent
;
969 unsigned int status_changed
= 0;
971 if (p
->old_link
!= p
->phy
->link
) {
973 p
->old_link
= p
->phy
->link
;
976 if (p
->old_duplex
!= p
->phy
->duplex
) {
978 p
->old_duplex
= p
->phy
->duplex
;
981 if (p
->old_pause
!= p
->phy
->pause
) {
983 p
->old_pause
= p
->phy
->pause
;
986 if (ds
->drv
->adjust_link
&& status_changed
)
987 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
990 phy_print_status(p
->phy
);
993 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
994 struct fixed_phy_status
*status
)
996 struct dsa_slave_priv
*p
= netdev_priv(dev
);
997 struct dsa_switch
*ds
= p
->parent
;
999 if (ds
->drv
->fixed_link_update
)
1000 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
1005 /* slave device setup *******************************************************/
1006 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
1007 struct net_device
*slave_dev
,
1010 struct dsa_switch
*ds
= p
->parent
;
1012 p
->phy
= ds
->slave_mii_bus
->phy_map
[addr
];
1016 /* Use already configured phy mode */
1017 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
1018 p
->phy_interface
= p
->phy
->interface
;
1019 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
1025 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
1026 struct net_device
*slave_dev
)
1028 struct dsa_switch
*ds
= p
->parent
;
1029 struct dsa_chip_data
*cd
= ds
->pd
;
1030 struct device_node
*phy_dn
, *port_dn
;
1031 bool phy_is_fixed
= false;
1035 port_dn
= cd
->port_dn
[p
->port
];
1036 mode
= of_get_phy_mode(port_dn
);
1038 mode
= PHY_INTERFACE_MODE_NA
;
1039 p
->phy_interface
= mode
;
1041 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1042 if (of_phy_is_fixed_link(port_dn
)) {
1043 /* In the case of a fixed PHY, the DT node associated
1044 * to the fixed PHY is the Port DT node
1046 ret
= of_phy_register_fixed_link(port_dn
);
1048 netdev_err(slave_dev
, "failed to register fixed PHY\n");
1051 phy_is_fixed
= true;
1055 if (ds
->drv
->get_phy_flags
)
1056 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
1059 ret
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1060 /* If this PHY address is part of phys_mii_mask, which means
1061 * that we need to divert reads and writes to/from it, then we
1062 * want to bind this device using the slave MII bus created by
1063 * DSA to make that happen.
1065 if (!phy_is_fixed
&& ret
>= 0 &&
1066 (ds
->phys_mii_mask
& (1 << ret
))) {
1067 ret
= dsa_slave_phy_connect(p
, slave_dev
, ret
);
1071 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1072 dsa_slave_adjust_link
,
1078 if (p
->phy
&& phy_is_fixed
)
1079 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1081 /* We could not connect to a designated PHY, so use the switch internal
1085 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
1089 netdev_info(slave_dev
, "attached PHY at address %d [%s]\n",
1090 p
->phy
->addr
, p
->phy
->drv
->name
);
1096 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1097 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1098 struct netdev_queue
*txq
,
1101 lockdep_set_class(&txq
->_xmit_lock
,
1102 &dsa_slave_netdev_xmit_lock_key
);
1105 int dsa_slave_suspend(struct net_device
*slave_dev
)
1107 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1114 phy_suspend(p
->phy
);
1120 int dsa_slave_resume(struct net_device
*slave_dev
)
1122 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1124 netif_device_attach(slave_dev
);
1134 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
1135 int port
, char *name
)
1137 struct net_device
*master
= ds
->dst
->master_netdev
;
1138 struct net_device
*slave_dev
;
1139 struct dsa_slave_priv
*p
;
1142 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1143 NET_NAME_UNKNOWN
, ether_setup
);
1144 if (slave_dev
== NULL
)
1147 slave_dev
->features
= master
->vlan_features
;
1148 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1149 eth_hw_addr_inherit(slave_dev
, master
);
1150 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1151 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1152 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1154 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1157 SET_NETDEV_DEV(slave_dev
, parent
);
1158 slave_dev
->dev
.of_node
= ds
->pd
->port_dn
[port
];
1159 slave_dev
->vlan_features
= master
->vlan_features
;
1161 p
= netdev_priv(slave_dev
);
1166 switch (ds
->dst
->tag_protocol
) {
1167 #ifdef CONFIG_NET_DSA_TAG_DSA
1168 case DSA_TAG_PROTO_DSA
:
1169 p
->xmit
= dsa_netdev_ops
.xmit
;
1172 #ifdef CONFIG_NET_DSA_TAG_EDSA
1173 case DSA_TAG_PROTO_EDSA
:
1174 p
->xmit
= edsa_netdev_ops
.xmit
;
1177 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1178 case DSA_TAG_PROTO_TRAILER
:
1179 p
->xmit
= trailer_netdev_ops
.xmit
;
1182 #ifdef CONFIG_NET_DSA_TAG_BRCM
1183 case DSA_TAG_PROTO_BRCM
:
1184 p
->xmit
= brcm_netdev_ops
.xmit
;
1188 p
->xmit
= dsa_slave_notag_xmit
;
1196 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1198 free_netdev(slave_dev
);
1202 ds
->ports
[port
] = slave_dev
;
1203 ret
= register_netdev(slave_dev
);
1205 netdev_err(master
, "error %d registering interface %s\n",
1206 ret
, slave_dev
->name
);
1207 phy_disconnect(p
->phy
);
1208 ds
->ports
[port
] = NULL
;
1209 free_netdev(slave_dev
);
1213 netif_carrier_off(slave_dev
);
1218 static bool dsa_slave_dev_check(struct net_device
*dev
)
1220 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1223 static int dsa_slave_master_changed(struct net_device
*dev
)
1225 struct net_device
*master
= netdev_master_upper_dev_get(dev
);
1226 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1229 if (master
&& master
->rtnl_link_ops
&&
1230 !strcmp(master
->rtnl_link_ops
->kind
, "bridge"))
1231 err
= dsa_slave_bridge_port_join(dev
, master
);
1232 else if (dsa_port_is_bridged(p
))
1233 err
= dsa_slave_bridge_port_leave(dev
);
1238 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
1239 unsigned long event
, void *ptr
)
1241 struct net_device
*dev
;
1245 case NETDEV_CHANGEUPPER
:
1246 dev
= netdev_notifier_info_to_dev(ptr
);
1247 if (!dsa_slave_dev_check(dev
))
1250 err
= dsa_slave_master_changed(dev
);
1252 netdev_warn(dev
, "failed to reflect master change\n");