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 <linux/if_bridge.h>
22 /* slave mii_bus handling ***************************************************/
23 static int dsa_slave_phy_read(struct mii_bus
*bus
, int addr
, int reg
)
25 struct dsa_switch
*ds
= bus
->priv
;
27 if (ds
->phys_mii_mask
& (1 << addr
))
28 return ds
->drv
->phy_read(ds
, addr
, reg
);
33 static int dsa_slave_phy_write(struct mii_bus
*bus
, int addr
, int reg
, u16 val
)
35 struct dsa_switch
*ds
= bus
->priv
;
37 if (ds
->phys_mii_mask
& (1 << addr
))
38 return ds
->drv
->phy_write(ds
, addr
, reg
, val
);
43 void dsa_slave_mii_bus_init(struct dsa_switch
*ds
)
45 ds
->slave_mii_bus
->priv
= (void *)ds
;
46 ds
->slave_mii_bus
->name
= "dsa slave smi";
47 ds
->slave_mii_bus
->read
= dsa_slave_phy_read
;
48 ds
->slave_mii_bus
->write
= dsa_slave_phy_write
;
49 snprintf(ds
->slave_mii_bus
->id
, MII_BUS_ID_SIZE
, "dsa-%d:%.2x",
50 ds
->index
, ds
->pd
->sw_addr
);
51 ds
->slave_mii_bus
->parent
= ds
->master_dev
;
52 ds
->slave_mii_bus
->phy_mask
= ~ds
->phys_mii_mask
;
56 /* slave device handling ****************************************************/
57 static int dsa_slave_init(struct net_device
*dev
)
59 struct dsa_slave_priv
*p
= netdev_priv(dev
);
61 dev
->iflink
= 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
, 0);
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_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
205 struct dsa_slave_priv
*p
= netdev_priv(dev
);
208 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
213 /* Return a bitmask of all ports being currently bridged within a given bridge
214 * device. Note that on leave, the mask will still return the bitmask of ports
215 * currently bridged, prior to port removal, and this is exactly what we want.
217 static u32
dsa_slave_br_port_mask(struct dsa_switch
*ds
,
218 struct net_device
*bridge
)
220 struct dsa_slave_priv
*p
;
224 for (port
= 0; port
< DSA_MAX_PORTS
; port
++) {
225 if (!dsa_is_port_initialized(ds
, port
))
228 p
= netdev_priv(ds
->ports
[port
]);
230 if (ds
->ports
[port
]->priv_flags
& IFF_BRIDGE_PORT
&&
231 p
->bridge_dev
== bridge
)
238 static int dsa_slave_stp_update(struct net_device
*dev
, u8 state
)
240 struct dsa_slave_priv
*p
= netdev_priv(dev
);
241 struct dsa_switch
*ds
= p
->parent
;
242 int ret
= -EOPNOTSUPP
;
244 if (ds
->drv
->port_stp_update
)
245 ret
= ds
->drv
->port_stp_update(ds
, p
->port
, state
);
250 static int dsa_slave_bridge_port_join(struct net_device
*dev
,
251 struct net_device
*br
)
253 struct dsa_slave_priv
*p
= netdev_priv(dev
);
254 struct dsa_switch
*ds
= p
->parent
;
255 int ret
= -EOPNOTSUPP
;
259 if (ds
->drv
->port_join_bridge
)
260 ret
= ds
->drv
->port_join_bridge(ds
, p
->port
,
261 dsa_slave_br_port_mask(ds
, br
));
266 static int dsa_slave_bridge_port_leave(struct net_device
*dev
)
268 struct dsa_slave_priv
*p
= netdev_priv(dev
);
269 struct dsa_switch
*ds
= p
->parent
;
270 int ret
= -EOPNOTSUPP
;
273 if (ds
->drv
->port_leave_bridge
)
274 ret
= ds
->drv
->port_leave_bridge(ds
, p
->port
,
275 dsa_slave_br_port_mask(ds
, p
->bridge_dev
));
277 p
->bridge_dev
= NULL
;
279 /* Port left the bridge, put in BR_STATE_DISABLED by the bridge layer,
280 * so allow it to be in BR_STATE_FORWARDING to be kept functional
282 dsa_slave_stp_update(dev
, BR_STATE_FORWARDING
);
287 static int dsa_slave_parent_id_get(struct net_device
*dev
,
288 struct netdev_phys_item_id
*psid
)
290 struct dsa_slave_priv
*p
= netdev_priv(dev
);
291 struct dsa_switch
*ds
= p
->parent
;
293 psid
->id_len
= sizeof(ds
->index
);
294 memcpy(&psid
->id
, &ds
->index
, psid
->id_len
);
299 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
301 struct dsa_slave_priv
*p
= netdev_priv(dev
);
303 return p
->xmit(skb
, dev
);
306 static netdev_tx_t
dsa_slave_notag_xmit(struct sk_buff
*skb
,
307 struct net_device
*dev
)
309 struct dsa_slave_priv
*p
= netdev_priv(dev
);
311 skb
->dev
= p
->parent
->dst
->master_netdev
;
318 /* ethtool operations *******************************************************/
320 dsa_slave_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
322 struct dsa_slave_priv
*p
= netdev_priv(dev
);
326 if (p
->phy
!= NULL
) {
327 err
= phy_read_status(p
->phy
);
329 err
= phy_ethtool_gset(p
->phy
, cmd
);
336 dsa_slave_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
338 struct dsa_slave_priv
*p
= netdev_priv(dev
);
341 return phy_ethtool_sset(p
->phy
, cmd
);
346 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
347 struct ethtool_drvinfo
*drvinfo
)
349 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
350 strlcpy(drvinfo
->version
, dsa_driver_version
, sizeof(drvinfo
->version
));
351 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
352 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
355 static int dsa_slave_get_regs_len(struct net_device
*dev
)
357 struct dsa_slave_priv
*p
= netdev_priv(dev
);
358 struct dsa_switch
*ds
= p
->parent
;
360 if (ds
->drv
->get_regs_len
)
361 return ds
->drv
->get_regs_len(ds
, p
->port
);
367 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
369 struct dsa_slave_priv
*p
= netdev_priv(dev
);
370 struct dsa_switch
*ds
= p
->parent
;
372 if (ds
->drv
->get_regs
)
373 ds
->drv
->get_regs(ds
, p
->port
, regs
, _p
);
376 static int dsa_slave_nway_reset(struct net_device
*dev
)
378 struct dsa_slave_priv
*p
= netdev_priv(dev
);
381 return genphy_restart_aneg(p
->phy
);
386 static u32
dsa_slave_get_link(struct net_device
*dev
)
388 struct dsa_slave_priv
*p
= netdev_priv(dev
);
390 if (p
->phy
!= NULL
) {
391 genphy_update_link(p
->phy
);
398 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
400 struct dsa_slave_priv
*p
= netdev_priv(dev
);
401 struct dsa_switch
*ds
= p
->parent
;
403 if (ds
->pd
->eeprom_len
)
404 return ds
->pd
->eeprom_len
;
406 if (ds
->drv
->get_eeprom_len
)
407 return ds
->drv
->get_eeprom_len(ds
);
412 static int dsa_slave_get_eeprom(struct net_device
*dev
,
413 struct ethtool_eeprom
*eeprom
, u8
*data
)
415 struct dsa_slave_priv
*p
= netdev_priv(dev
);
416 struct dsa_switch
*ds
= p
->parent
;
418 if (ds
->drv
->get_eeprom
)
419 return ds
->drv
->get_eeprom(ds
, eeprom
, data
);
424 static int dsa_slave_set_eeprom(struct net_device
*dev
,
425 struct ethtool_eeprom
*eeprom
, u8
*data
)
427 struct dsa_slave_priv
*p
= netdev_priv(dev
);
428 struct dsa_switch
*ds
= p
->parent
;
430 if (ds
->drv
->set_eeprom
)
431 return ds
->drv
->set_eeprom(ds
, eeprom
, data
);
436 static void dsa_slave_get_strings(struct net_device
*dev
,
437 uint32_t stringset
, uint8_t *data
)
439 struct dsa_slave_priv
*p
= netdev_priv(dev
);
440 struct dsa_switch
*ds
= p
->parent
;
442 if (stringset
== ETH_SS_STATS
) {
443 int len
= ETH_GSTRING_LEN
;
445 strncpy(data
, "tx_packets", len
);
446 strncpy(data
+ len
, "tx_bytes", len
);
447 strncpy(data
+ 2 * len
, "rx_packets", len
);
448 strncpy(data
+ 3 * len
, "rx_bytes", len
);
449 if (ds
->drv
->get_strings
!= NULL
)
450 ds
->drv
->get_strings(ds
, p
->port
, data
+ 4 * len
);
454 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
455 struct ethtool_stats
*stats
,
458 struct dsa_slave_priv
*p
= netdev_priv(dev
);
459 struct dsa_switch
*ds
= p
->parent
;
461 data
[0] = p
->dev
->stats
.tx_packets
;
462 data
[1] = p
->dev
->stats
.tx_bytes
;
463 data
[2] = p
->dev
->stats
.rx_packets
;
464 data
[3] = p
->dev
->stats
.rx_bytes
;
465 if (ds
->drv
->get_ethtool_stats
!= NULL
)
466 ds
->drv
->get_ethtool_stats(ds
, p
->port
, data
+ 4);
469 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
471 struct dsa_slave_priv
*p
= netdev_priv(dev
);
472 struct dsa_switch
*ds
= p
->parent
;
474 if (sset
== ETH_SS_STATS
) {
478 if (ds
->drv
->get_sset_count
!= NULL
)
479 count
+= ds
->drv
->get_sset_count(ds
);
487 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
489 struct dsa_slave_priv
*p
= netdev_priv(dev
);
490 struct dsa_switch
*ds
= p
->parent
;
492 if (ds
->drv
->get_wol
)
493 ds
->drv
->get_wol(ds
, p
->port
, w
);
496 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
498 struct dsa_slave_priv
*p
= netdev_priv(dev
);
499 struct dsa_switch
*ds
= p
->parent
;
500 int ret
= -EOPNOTSUPP
;
502 if (ds
->drv
->set_wol
)
503 ret
= ds
->drv
->set_wol(ds
, p
->port
, w
);
508 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
510 struct dsa_slave_priv
*p
= netdev_priv(dev
);
511 struct dsa_switch
*ds
= p
->parent
;
514 if (!ds
->drv
->set_eee
)
517 ret
= ds
->drv
->set_eee(ds
, p
->port
, p
->phy
, e
);
522 ret
= phy_ethtool_set_eee(p
->phy
, e
);
527 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
529 struct dsa_slave_priv
*p
= netdev_priv(dev
);
530 struct dsa_switch
*ds
= p
->parent
;
533 if (!ds
->drv
->get_eee
)
536 ret
= ds
->drv
->get_eee(ds
, p
->port
, e
);
541 ret
= phy_ethtool_get_eee(p
->phy
, e
);
546 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
547 .get_settings
= dsa_slave_get_settings
,
548 .set_settings
= dsa_slave_set_settings
,
549 .get_drvinfo
= dsa_slave_get_drvinfo
,
550 .get_regs_len
= dsa_slave_get_regs_len
,
551 .get_regs
= dsa_slave_get_regs
,
552 .nway_reset
= dsa_slave_nway_reset
,
553 .get_link
= dsa_slave_get_link
,
554 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
555 .get_eeprom
= dsa_slave_get_eeprom
,
556 .set_eeprom
= dsa_slave_set_eeprom
,
557 .get_strings
= dsa_slave_get_strings
,
558 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
559 .get_sset_count
= dsa_slave_get_sset_count
,
560 .set_wol
= dsa_slave_set_wol
,
561 .get_wol
= dsa_slave_get_wol
,
562 .set_eee
= dsa_slave_set_eee
,
563 .get_eee
= dsa_slave_get_eee
,
566 static const struct net_device_ops dsa_slave_netdev_ops
= {
567 .ndo_init
= dsa_slave_init
,
568 .ndo_open
= dsa_slave_open
,
569 .ndo_stop
= dsa_slave_close
,
570 .ndo_start_xmit
= dsa_slave_xmit
,
571 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
572 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
573 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
574 .ndo_do_ioctl
= dsa_slave_ioctl
,
575 .ndo_switch_parent_id_get
= dsa_slave_parent_id_get
,
576 .ndo_switch_port_stp_update
= dsa_slave_stp_update
,
579 static void dsa_slave_adjust_link(struct net_device
*dev
)
581 struct dsa_slave_priv
*p
= netdev_priv(dev
);
582 struct dsa_switch
*ds
= p
->parent
;
583 unsigned int status_changed
= 0;
585 if (p
->old_link
!= p
->phy
->link
) {
587 p
->old_link
= p
->phy
->link
;
590 if (p
->old_duplex
!= p
->phy
->duplex
) {
592 p
->old_duplex
= p
->phy
->duplex
;
595 if (p
->old_pause
!= p
->phy
->pause
) {
597 p
->old_pause
= p
->phy
->pause
;
600 if (ds
->drv
->adjust_link
&& status_changed
)
601 ds
->drv
->adjust_link(ds
, p
->port
, p
->phy
);
604 phy_print_status(p
->phy
);
607 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
608 struct fixed_phy_status
*status
)
610 struct dsa_slave_priv
*p
= netdev_priv(dev
);
611 struct dsa_switch
*ds
= p
->parent
;
613 if (ds
->drv
->fixed_link_update
)
614 ds
->drv
->fixed_link_update(ds
, p
->port
, status
);
619 /* slave device setup *******************************************************/
620 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
621 struct net_device
*slave_dev
,
624 struct dsa_switch
*ds
= p
->parent
;
626 p
->phy
= ds
->slave_mii_bus
->phy_map
[addr
];
630 /* Use already configured phy mode */
631 p
->phy_interface
= p
->phy
->interface
;
632 phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
638 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
639 struct net_device
*slave_dev
)
641 struct dsa_switch
*ds
= p
->parent
;
642 struct dsa_chip_data
*cd
= ds
->pd
;
643 struct device_node
*phy_dn
, *port_dn
;
644 bool phy_is_fixed
= false;
648 port_dn
= cd
->port_dn
[p
->port
];
649 mode
= of_get_phy_mode(port_dn
);
651 mode
= PHY_INTERFACE_MODE_NA
;
652 p
->phy_interface
= mode
;
654 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
655 if (of_phy_is_fixed_link(port_dn
)) {
656 /* In the case of a fixed PHY, the DT node associated
657 * to the fixed PHY is the Port DT node
659 ret
= of_phy_register_fixed_link(port_dn
);
661 netdev_err(slave_dev
, "failed to register fixed PHY\n");
668 if (ds
->drv
->get_phy_flags
)
669 phy_flags
= ds
->drv
->get_phy_flags(ds
, p
->port
);
672 ret
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
673 /* If this PHY address is part of phys_mii_mask, which means
674 * that we need to divert reads and writes to/from it, then we
675 * want to bind this device using the slave MII bus created by
676 * DSA to make that happen.
678 if (!phy_is_fixed
&& ret
>= 0 &&
679 (ds
->phys_mii_mask
& (1 << ret
))) {
680 ret
= dsa_slave_phy_connect(p
, slave_dev
, ret
);
684 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
685 dsa_slave_adjust_link
,
691 if (p
->phy
&& phy_is_fixed
)
692 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
694 /* We could not connect to a designated PHY, so use the switch internal
698 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->port
);
702 netdev_info(slave_dev
, "attached PHY at address %d [%s]\n",
703 p
->phy
->addr
, p
->phy
->drv
->name
);
709 int dsa_slave_suspend(struct net_device
*slave_dev
)
711 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
713 netif_device_detach(slave_dev
);
726 int dsa_slave_resume(struct net_device
*slave_dev
)
728 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
730 netif_device_attach(slave_dev
);
740 int dsa_slave_create(struct dsa_switch
*ds
, struct device
*parent
,
741 int port
, char *name
)
743 struct net_device
*master
= ds
->dst
->master_netdev
;
744 struct net_device
*slave_dev
;
745 struct dsa_slave_priv
*p
;
748 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
749 NET_NAME_UNKNOWN
, ether_setup
);
750 if (slave_dev
== NULL
)
753 slave_dev
->features
= master
->vlan_features
;
754 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
755 eth_hw_addr_inherit(slave_dev
, master
);
756 slave_dev
->tx_queue_len
= 0;
757 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
759 SET_NETDEV_DEV(slave_dev
, parent
);
760 slave_dev
->dev
.of_node
= ds
->pd
->port_dn
[port
];
761 slave_dev
->vlan_features
= master
->vlan_features
;
763 p
= netdev_priv(slave_dev
);
768 switch (ds
->dst
->tag_protocol
) {
769 #ifdef CONFIG_NET_DSA_TAG_DSA
770 case DSA_TAG_PROTO_DSA
:
771 p
->xmit
= dsa_netdev_ops
.xmit
;
774 #ifdef CONFIG_NET_DSA_TAG_EDSA
775 case DSA_TAG_PROTO_EDSA
:
776 p
->xmit
= edsa_netdev_ops
.xmit
;
779 #ifdef CONFIG_NET_DSA_TAG_TRAILER
780 case DSA_TAG_PROTO_TRAILER
:
781 p
->xmit
= trailer_netdev_ops
.xmit
;
784 #ifdef CONFIG_NET_DSA_TAG_BRCM
785 case DSA_TAG_PROTO_BRCM
:
786 p
->xmit
= brcm_netdev_ops
.xmit
;
790 p
->xmit
= dsa_slave_notag_xmit
;
798 ret
= dsa_slave_phy_setup(p
, slave_dev
);
800 free_netdev(slave_dev
);
804 ds
->ports
[port
] = slave_dev
;
805 ret
= register_netdev(slave_dev
);
807 netdev_err(master
, "error %d registering interface %s\n",
808 ret
, slave_dev
->name
);
809 phy_disconnect(p
->phy
);
810 ds
->ports
[port
] = NULL
;
811 free_netdev(slave_dev
);
815 netif_carrier_off(slave_dev
);
820 static bool dsa_slave_dev_check(struct net_device
*dev
)
822 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
825 static int dsa_slave_master_changed(struct net_device
*dev
)
827 struct net_device
*master
= netdev_master_upper_dev_get(dev
);
830 if (master
&& master
->rtnl_link_ops
&&
831 !strcmp(master
->rtnl_link_ops
->kind
, "bridge"))
832 err
= dsa_slave_bridge_port_join(dev
, master
);
834 err
= dsa_slave_bridge_port_leave(dev
);
839 int dsa_slave_netdevice_event(struct notifier_block
*unused
,
840 unsigned long event
, void *ptr
)
842 struct net_device
*dev
;
846 case NETDEV_CHANGEUPPER
:
847 dev
= netdev_notifier_info_to_dev(ptr
);
848 if (!dsa_slave_dev_check(dev
))
851 err
= dsa_slave_master_changed(dev
);
853 netdev_warn(dev
, "failed to reflect master change\n");