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 <linux/list.h>
20 #include <net/rtnetlink.h>
21 #include <net/pkt_cls.h>
22 #include <net/tc_act/tc_mirred.h>
23 #include <linux/if_bridge.h>
24 #include <linux/netpoll.h>
28 static bool dsa_slave_dev_check(struct net_device
*dev
);
30 /* slave mii_bus handling ***************************************************/
31 static int dsa_slave_phy_read(struct mii_bus
*bus
, int addr
, int reg
)
33 struct dsa_switch
*ds
= bus
->priv
;
35 if (ds
->phys_mii_mask
& (1 << addr
))
36 return ds
->ops
->phy_read(ds
, addr
, reg
);
41 static int dsa_slave_phy_write(struct mii_bus
*bus
, int addr
, int reg
, u16 val
)
43 struct dsa_switch
*ds
= bus
->priv
;
45 if (ds
->phys_mii_mask
& (1 << addr
))
46 return ds
->ops
->phy_write(ds
, addr
, reg
, val
);
51 void dsa_slave_mii_bus_init(struct dsa_switch
*ds
)
53 ds
->slave_mii_bus
->priv
= (void *)ds
;
54 ds
->slave_mii_bus
->name
= "dsa slave smi";
55 ds
->slave_mii_bus
->read
= dsa_slave_phy_read
;
56 ds
->slave_mii_bus
->write
= dsa_slave_phy_write
;
57 snprintf(ds
->slave_mii_bus
->id
, MII_BUS_ID_SIZE
, "dsa-%d.%d",
58 ds
->dst
->tree
, ds
->index
);
59 ds
->slave_mii_bus
->parent
= ds
->dev
;
60 ds
->slave_mii_bus
->phy_mask
= ~ds
->phys_mii_mask
;
64 /* slave device handling ****************************************************/
65 static int dsa_slave_get_iflink(const struct net_device
*dev
)
67 struct dsa_slave_priv
*p
= netdev_priv(dev
);
69 return dsa_master_netdev(p
)->ifindex
;
72 static int dsa_slave_open(struct net_device
*dev
)
74 struct dsa_slave_priv
*p
= netdev_priv(dev
);
75 struct dsa_port
*dp
= p
->dp
;
76 struct dsa_switch
*ds
= dp
->ds
;
77 struct net_device
*master
= dsa_master_netdev(p
);
78 u8 stp_state
= dp
->bridge_dev
? 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
->dp
->index
, p
->phy
);
107 dsa_port_set_state_now(p
->dp
, 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
= dsa_master_netdev(p
);
131 struct dsa_switch
*ds
= p
->dp
->ds
;
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
->ops
->port_disable
)
147 ds
->ops
->port_disable(ds
, p
->dp
->index
, p
->phy
);
149 dsa_port_set_state_now(p
->dp
, BR_STATE_DISABLED
);
154 static void dsa_slave_change_rx_flags(struct net_device
*dev
, int change
)
156 struct dsa_slave_priv
*p
= netdev_priv(dev
);
157 struct net_device
*master
= dsa_master_netdev(p
);
159 if (change
& IFF_ALLMULTI
)
160 dev_set_allmulti(master
, dev
->flags
& IFF_ALLMULTI
? 1 : -1);
161 if (change
& IFF_PROMISC
)
162 dev_set_promiscuity(master
, dev
->flags
& IFF_PROMISC
? 1 : -1);
165 static void dsa_slave_set_rx_mode(struct net_device
*dev
)
167 struct dsa_slave_priv
*p
= netdev_priv(dev
);
168 struct net_device
*master
= dsa_master_netdev(p
);
170 dev_mc_sync(master
, dev
);
171 dev_uc_sync(master
, dev
);
174 static int dsa_slave_set_mac_address(struct net_device
*dev
, void *a
)
176 struct dsa_slave_priv
*p
= netdev_priv(dev
);
177 struct net_device
*master
= dsa_master_netdev(p
);
178 struct sockaddr
*addr
= a
;
181 if (!is_valid_ether_addr(addr
->sa_data
))
182 return -EADDRNOTAVAIL
;
184 if (!(dev
->flags
& IFF_UP
))
187 if (!ether_addr_equal(addr
->sa_data
, master
->dev_addr
)) {
188 err
= dev_uc_add(master
, addr
->sa_data
);
193 if (!ether_addr_equal(dev
->dev_addr
, master
->dev_addr
))
194 dev_uc_del(master
, dev
->dev_addr
);
197 ether_addr_copy(dev
->dev_addr
, addr
->sa_data
);
202 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
204 struct dsa_slave_priv
*p
= netdev_priv(dev
);
207 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
212 static int dsa_slave_port_attr_set(struct net_device
*dev
,
213 const struct switchdev_attr
*attr
,
214 struct switchdev_trans
*trans
)
216 struct dsa_slave_priv
*p
= netdev_priv(dev
);
217 struct dsa_port
*dp
= p
->dp
;
221 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
222 ret
= dsa_port_set_state(dp
, attr
->u
.stp_state
, trans
);
224 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
:
225 ret
= dsa_port_vlan_filtering(dp
, attr
->u
.vlan_filtering
,
228 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME
:
229 ret
= dsa_port_ageing_time(dp
, attr
->u
.ageing_time
, trans
);
239 static int dsa_slave_port_obj_add(struct net_device
*dev
,
240 const struct switchdev_obj
*obj
,
241 struct switchdev_trans
*trans
)
243 struct dsa_slave_priv
*p
= netdev_priv(dev
);
244 struct dsa_port
*dp
= p
->dp
;
247 /* For the prepare phase, ensure the full set of changes is feasable in
248 * one go in order to signal a failure properly. If an operation is not
249 * supported, return -EOPNOTSUPP.
253 case SWITCHDEV_OBJ_ID_PORT_FDB
:
254 err
= dsa_port_fdb_add(dp
, SWITCHDEV_OBJ_PORT_FDB(obj
), trans
);
256 case SWITCHDEV_OBJ_ID_PORT_MDB
:
257 err
= dsa_port_mdb_add(dp
, SWITCHDEV_OBJ_PORT_MDB(obj
), trans
);
259 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
260 err
= dsa_port_vlan_add(dp
, SWITCHDEV_OBJ_PORT_VLAN(obj
),
271 static int dsa_slave_port_obj_del(struct net_device
*dev
,
272 const struct switchdev_obj
*obj
)
274 struct dsa_slave_priv
*p
= netdev_priv(dev
);
275 struct dsa_port
*dp
= p
->dp
;
279 case SWITCHDEV_OBJ_ID_PORT_FDB
:
280 err
= dsa_port_fdb_del(dp
, SWITCHDEV_OBJ_PORT_FDB(obj
));
282 case SWITCHDEV_OBJ_ID_PORT_MDB
:
283 err
= dsa_port_mdb_del(dp
, SWITCHDEV_OBJ_PORT_MDB(obj
));
285 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
286 err
= dsa_port_vlan_del(dp
, SWITCHDEV_OBJ_PORT_VLAN(obj
));
296 static int dsa_slave_port_obj_dump(struct net_device
*dev
,
297 struct switchdev_obj
*obj
,
298 switchdev_obj_dump_cb_t
*cb
)
300 struct dsa_slave_priv
*p
= netdev_priv(dev
);
301 struct dsa_port
*dp
= p
->dp
;
305 case SWITCHDEV_OBJ_ID_PORT_FDB
:
306 err
= dsa_port_fdb_dump(dp
, SWITCHDEV_OBJ_PORT_FDB(obj
), cb
);
308 case SWITCHDEV_OBJ_ID_PORT_MDB
:
309 err
= dsa_port_mdb_dump(dp
, SWITCHDEV_OBJ_PORT_MDB(obj
), cb
);
311 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
312 err
= dsa_port_vlan_dump(dp
, SWITCHDEV_OBJ_PORT_VLAN(obj
), cb
);
322 static int dsa_slave_port_attr_get(struct net_device
*dev
,
323 struct switchdev_attr
*attr
)
325 struct dsa_slave_priv
*p
= netdev_priv(dev
);
326 struct dsa_switch
*ds
= p
->dp
->ds
;
329 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID
:
330 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
331 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
340 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
343 #ifdef CONFIG_NET_POLL_CONTROLLER
345 netpoll_send_skb(p
->netpoll
, skb
);
352 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
354 struct dsa_slave_priv
*p
= netdev_priv(dev
);
355 struct pcpu_sw_netstats
*s
;
356 struct sk_buff
*nskb
;
358 s
= this_cpu_ptr(p
->stats64
);
359 u64_stats_update_begin(&s
->syncp
);
361 s
->tx_bytes
+= skb
->len
;
362 u64_stats_update_end(&s
->syncp
);
364 /* Transmit function may have to reallocate the original SKB,
365 * in which case it must have freed it. Only free it here on error.
367 nskb
= p
->xmit(skb
, dev
);
373 /* SKB for netpoll still need to be mangled with the protocol-specific
374 * tag to be successfully transmitted
376 if (unlikely(netpoll_tx_running(dev
)))
377 return dsa_netpoll_send_skb(p
, nskb
);
379 /* Queue the SKB for transmission on the parent interface, but
380 * do not modify its EtherType
382 nskb
->dev
= dsa_master_netdev(p
);
383 dev_queue_xmit(nskb
);
388 /* ethtool operations *******************************************************/
390 dsa_slave_get_link_ksettings(struct net_device
*dev
,
391 struct ethtool_link_ksettings
*cmd
)
393 struct dsa_slave_priv
*p
= netdev_priv(dev
);
398 phy_ethtool_ksettings_get(p
->phy
, cmd
);
404 dsa_slave_set_link_ksettings(struct net_device
*dev
,
405 const struct ethtool_link_ksettings
*cmd
)
407 struct dsa_slave_priv
*p
= netdev_priv(dev
);
410 return phy_ethtool_ksettings_set(p
->phy
, cmd
);
415 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
416 struct ethtool_drvinfo
*drvinfo
)
418 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
419 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
420 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
423 static int dsa_slave_get_regs_len(struct net_device
*dev
)
425 struct dsa_slave_priv
*p
= netdev_priv(dev
);
426 struct dsa_switch
*ds
= p
->dp
->ds
;
428 if (ds
->ops
->get_regs_len
)
429 return ds
->ops
->get_regs_len(ds
, p
->dp
->index
);
435 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
437 struct dsa_slave_priv
*p
= netdev_priv(dev
);
438 struct dsa_switch
*ds
= p
->dp
->ds
;
440 if (ds
->ops
->get_regs
)
441 ds
->ops
->get_regs(ds
, p
->dp
->index
, regs
, _p
);
444 static int dsa_slave_nway_reset(struct net_device
*dev
)
446 struct dsa_slave_priv
*p
= netdev_priv(dev
);
449 return genphy_restart_aneg(p
->phy
);
454 static u32
dsa_slave_get_link(struct net_device
*dev
)
456 struct dsa_slave_priv
*p
= netdev_priv(dev
);
458 if (p
->phy
!= NULL
) {
459 genphy_update_link(p
->phy
);
466 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
468 struct dsa_slave_priv
*p
= netdev_priv(dev
);
469 struct dsa_switch
*ds
= p
->dp
->ds
;
471 if (ds
->cd
&& ds
->cd
->eeprom_len
)
472 return ds
->cd
->eeprom_len
;
474 if (ds
->ops
->get_eeprom_len
)
475 return ds
->ops
->get_eeprom_len(ds
);
480 static int dsa_slave_get_eeprom(struct net_device
*dev
,
481 struct ethtool_eeprom
*eeprom
, u8
*data
)
483 struct dsa_slave_priv
*p
= netdev_priv(dev
);
484 struct dsa_switch
*ds
= p
->dp
->ds
;
486 if (ds
->ops
->get_eeprom
)
487 return ds
->ops
->get_eeprom(ds
, eeprom
, data
);
492 static int dsa_slave_set_eeprom(struct net_device
*dev
,
493 struct ethtool_eeprom
*eeprom
, u8
*data
)
495 struct dsa_slave_priv
*p
= netdev_priv(dev
);
496 struct dsa_switch
*ds
= p
->dp
->ds
;
498 if (ds
->ops
->set_eeprom
)
499 return ds
->ops
->set_eeprom(ds
, eeprom
, data
);
504 static void dsa_slave_get_strings(struct net_device
*dev
,
505 uint32_t stringset
, uint8_t *data
)
507 struct dsa_slave_priv
*p
= netdev_priv(dev
);
508 struct dsa_switch
*ds
= p
->dp
->ds
;
510 if (stringset
== ETH_SS_STATS
) {
511 int len
= ETH_GSTRING_LEN
;
513 strncpy(data
, "tx_packets", len
);
514 strncpy(data
+ len
, "tx_bytes", len
);
515 strncpy(data
+ 2 * len
, "rx_packets", len
);
516 strncpy(data
+ 3 * len
, "rx_bytes", len
);
517 if (ds
->ops
->get_strings
)
518 ds
->ops
->get_strings(ds
, p
->dp
->index
, data
+ 4 * len
);
522 static void dsa_cpu_port_get_ethtool_stats(struct net_device
*dev
,
523 struct ethtool_stats
*stats
,
526 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
527 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
528 struct dsa_switch
*ds
= cpu_dp
->ds
;
529 s8 cpu_port
= cpu_dp
->index
;
532 if (cpu_dp
->ethtool_ops
.get_sset_count
) {
533 count
= cpu_dp
->ethtool_ops
.get_sset_count(dev
, ETH_SS_STATS
);
534 cpu_dp
->ethtool_ops
.get_ethtool_stats(dev
, stats
, data
);
537 if (ds
->ops
->get_ethtool_stats
)
538 ds
->ops
->get_ethtool_stats(ds
, cpu_port
, data
+ count
);
541 static int dsa_cpu_port_get_sset_count(struct net_device
*dev
, int sset
)
543 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
544 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
545 struct dsa_switch
*ds
= cpu_dp
->ds
;
548 if (cpu_dp
->ethtool_ops
.get_sset_count
)
549 count
+= cpu_dp
->ethtool_ops
.get_sset_count(dev
, sset
);
551 if (sset
== ETH_SS_STATS
&& ds
->ops
->get_sset_count
)
552 count
+= ds
->ops
->get_sset_count(ds
);
557 static void dsa_cpu_port_get_strings(struct net_device
*dev
,
558 uint32_t stringset
, uint8_t *data
)
560 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
561 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
562 struct dsa_switch
*ds
= cpu_dp
->ds
;
563 s8 cpu_port
= cpu_dp
->index
;
564 int len
= ETH_GSTRING_LEN
;
565 int mcount
= 0, count
;
570 snprintf(pfx
, sizeof(pfx
), "p%.2d", cpu_port
);
571 /* We do not want to be NULL-terminated, since this is a prefix */
572 pfx
[sizeof(pfx
) - 1] = '_';
574 if (cpu_dp
->ethtool_ops
.get_sset_count
) {
575 mcount
= cpu_dp
->ethtool_ops
.get_sset_count(dev
, ETH_SS_STATS
);
576 cpu_dp
->ethtool_ops
.get_strings(dev
, stringset
, data
);
579 if (stringset
== ETH_SS_STATS
&& ds
->ops
->get_strings
) {
580 ndata
= data
+ mcount
* len
;
581 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
582 * the output after to prepend our CPU port prefix we
583 * constructed earlier
585 ds
->ops
->get_strings(ds
, cpu_port
, ndata
);
586 count
= ds
->ops
->get_sset_count(ds
);
587 for (i
= 0; i
< count
; i
++) {
588 memmove(ndata
+ (i
* len
+ sizeof(pfx
)),
589 ndata
+ i
* len
, len
- sizeof(pfx
));
590 memcpy(ndata
+ i
* len
, pfx
, sizeof(pfx
));
595 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
596 struct ethtool_stats
*stats
,
599 struct dsa_slave_priv
*p
= netdev_priv(dev
);
600 struct dsa_switch
*ds
= p
->dp
->ds
;
601 struct pcpu_sw_netstats
*s
;
605 for_each_possible_cpu(i
) {
606 u64 tx_packets
, tx_bytes
, rx_packets
, rx_bytes
;
608 s
= per_cpu_ptr(p
->stats64
, i
);
610 start
= u64_stats_fetch_begin_irq(&s
->syncp
);
611 tx_packets
= s
->tx_packets
;
612 tx_bytes
= s
->tx_bytes
;
613 rx_packets
= s
->rx_packets
;
614 rx_bytes
= s
->rx_bytes
;
615 } while (u64_stats_fetch_retry_irq(&s
->syncp
, start
));
616 data
[0] += tx_packets
;
618 data
[2] += rx_packets
;
621 if (ds
->ops
->get_ethtool_stats
)
622 ds
->ops
->get_ethtool_stats(ds
, p
->dp
->index
, data
+ 4);
625 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
627 struct dsa_slave_priv
*p
= netdev_priv(dev
);
628 struct dsa_switch
*ds
= p
->dp
->ds
;
630 if (sset
== ETH_SS_STATS
) {
634 if (ds
->ops
->get_sset_count
)
635 count
+= ds
->ops
->get_sset_count(ds
);
643 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
645 struct dsa_slave_priv
*p
= netdev_priv(dev
);
646 struct dsa_switch
*ds
= p
->dp
->ds
;
648 if (ds
->ops
->get_wol
)
649 ds
->ops
->get_wol(ds
, p
->dp
->index
, w
);
652 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
654 struct dsa_slave_priv
*p
= netdev_priv(dev
);
655 struct dsa_switch
*ds
= p
->dp
->ds
;
656 int ret
= -EOPNOTSUPP
;
658 if (ds
->ops
->set_wol
)
659 ret
= ds
->ops
->set_wol(ds
, p
->dp
->index
, w
);
664 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
666 struct dsa_slave_priv
*p
= netdev_priv(dev
);
667 struct dsa_switch
*ds
= p
->dp
->ds
;
670 /* Port's PHY and MAC both need to be EEE capable */
674 if (!ds
->ops
->set_mac_eee
)
677 ret
= ds
->ops
->set_mac_eee(ds
, p
->dp
->index
, e
);
681 if (e
->eee_enabled
) {
682 ret
= phy_init_eee(p
->phy
, 0);
687 return phy_ethtool_set_eee(p
->phy
, e
);
690 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
692 struct dsa_slave_priv
*p
= netdev_priv(dev
);
693 struct dsa_switch
*ds
= p
->dp
->ds
;
696 /* Port's PHY and MAC both need to be EEE capable */
700 if (!ds
->ops
->get_mac_eee
)
703 ret
= ds
->ops
->get_mac_eee(ds
, p
->dp
->index
, e
);
707 return phy_ethtool_get_eee(p
->phy
, e
);
710 #ifdef CONFIG_NET_POLL_CONTROLLER
711 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
712 struct netpoll_info
*ni
)
714 struct dsa_slave_priv
*p
= netdev_priv(dev
);
715 struct net_device
*master
= dsa_master_netdev(p
);
716 struct netpoll
*netpoll
;
719 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
723 err
= __netpoll_setup(netpoll
, master
);
729 p
->netpoll
= netpoll
;
734 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
736 struct dsa_slave_priv
*p
= netdev_priv(dev
);
737 struct netpoll
*netpoll
= p
->netpoll
;
744 __netpoll_free_async(netpoll
);
747 static void dsa_slave_poll_controller(struct net_device
*dev
)
752 static int dsa_slave_get_phys_port_name(struct net_device
*dev
,
753 char *name
, size_t len
)
755 struct dsa_slave_priv
*p
= netdev_priv(dev
);
757 if (snprintf(name
, len
, "p%d", p
->dp
->index
) >= len
)
763 static struct dsa_mall_tc_entry
*
764 dsa_slave_mall_tc_entry_find(struct dsa_slave_priv
*p
,
765 unsigned long cookie
)
767 struct dsa_mall_tc_entry
*mall_tc_entry
;
769 list_for_each_entry(mall_tc_entry
, &p
->mall_tc_list
, list
)
770 if (mall_tc_entry
->cookie
== cookie
)
771 return mall_tc_entry
;
776 static int dsa_slave_add_cls_matchall(struct net_device
*dev
,
777 struct tc_cls_matchall_offload
*cls
,
780 struct dsa_slave_priv
*p
= netdev_priv(dev
);
781 struct dsa_mall_tc_entry
*mall_tc_entry
;
782 __be16 protocol
= cls
->common
.protocol
;
783 struct dsa_switch
*ds
= p
->dp
->ds
;
784 struct net
*net
= dev_net(dev
);
785 struct dsa_slave_priv
*to_p
;
786 struct net_device
*to_dev
;
787 const struct tc_action
*a
;
788 int err
= -EOPNOTSUPP
;
792 if (!ds
->ops
->port_mirror_add
)
795 if (!tcf_exts_has_one_action(cls
->exts
))
798 tcf_exts_to_list(cls
->exts
, &actions
);
799 a
= list_first_entry(&actions
, struct tc_action
, list
);
801 if (is_tcf_mirred_egress_mirror(a
) && protocol
== htons(ETH_P_ALL
)) {
802 struct dsa_mall_mirror_tc_entry
*mirror
;
804 ifindex
= tcf_mirred_ifindex(a
);
805 to_dev
= __dev_get_by_index(net
, ifindex
);
809 if (!dsa_slave_dev_check(to_dev
))
812 mall_tc_entry
= kzalloc(sizeof(*mall_tc_entry
), GFP_KERNEL
);
816 mall_tc_entry
->cookie
= cls
->cookie
;
817 mall_tc_entry
->type
= DSA_PORT_MALL_MIRROR
;
818 mirror
= &mall_tc_entry
->mirror
;
820 to_p
= netdev_priv(to_dev
);
822 mirror
->to_local_port
= to_p
->dp
->index
;
823 mirror
->ingress
= ingress
;
825 err
= ds
->ops
->port_mirror_add(ds
, p
->dp
->index
, mirror
,
828 kfree(mall_tc_entry
);
832 list_add_tail(&mall_tc_entry
->list
, &p
->mall_tc_list
);
838 static void dsa_slave_del_cls_matchall(struct net_device
*dev
,
839 struct tc_cls_matchall_offload
*cls
)
841 struct dsa_slave_priv
*p
= netdev_priv(dev
);
842 struct dsa_mall_tc_entry
*mall_tc_entry
;
843 struct dsa_switch
*ds
= p
->dp
->ds
;
845 if (!ds
->ops
->port_mirror_del
)
848 mall_tc_entry
= dsa_slave_mall_tc_entry_find(p
, cls
->cookie
);
852 list_del(&mall_tc_entry
->list
);
854 switch (mall_tc_entry
->type
) {
855 case DSA_PORT_MALL_MIRROR
:
856 ds
->ops
->port_mirror_del(ds
, p
->dp
->index
,
857 &mall_tc_entry
->mirror
);
863 kfree(mall_tc_entry
);
866 static int dsa_slave_setup_tc_cls_matchall(struct net_device
*dev
,
867 struct tc_cls_matchall_offload
*cls
)
869 bool ingress
= TC_H_MAJ(cls
->common
.handle
) == TC_H_MAJ(TC_H_INGRESS
);
871 if (cls
->common
.chain_index
)
874 switch (cls
->command
) {
875 case TC_CLSMATCHALL_REPLACE
:
876 return dsa_slave_add_cls_matchall(dev
, cls
, ingress
);
877 case TC_CLSMATCHALL_DESTROY
:
878 dsa_slave_del_cls_matchall(dev
, cls
);
885 static int dsa_slave_setup_tc(struct net_device
*dev
, enum tc_setup_type type
,
889 case TC_SETUP_CLSMATCHALL
:
890 return dsa_slave_setup_tc_cls_matchall(dev
, type_data
);
896 static void dsa_slave_get_stats64(struct net_device
*dev
,
897 struct rtnl_link_stats64
*stats
)
899 struct dsa_slave_priv
*p
= netdev_priv(dev
);
900 struct pcpu_sw_netstats
*s
;
904 netdev_stats_to_stats64(stats
, &dev
->stats
);
905 for_each_possible_cpu(i
) {
906 u64 tx_packets
, tx_bytes
, rx_packets
, rx_bytes
;
908 s
= per_cpu_ptr(p
->stats64
, i
);
910 start
= u64_stats_fetch_begin_irq(&s
->syncp
);
911 tx_packets
= s
->tx_packets
;
912 tx_bytes
= s
->tx_bytes
;
913 rx_packets
= s
->rx_packets
;
914 rx_bytes
= s
->rx_bytes
;
915 } while (u64_stats_fetch_retry_irq(&s
->syncp
, start
));
917 stats
->tx_packets
+= tx_packets
;
918 stats
->tx_bytes
+= tx_bytes
;
919 stats
->rx_packets
+= rx_packets
;
920 stats
->rx_bytes
+= rx_bytes
;
924 void dsa_cpu_port_ethtool_init(struct ethtool_ops
*ops
)
926 ops
->get_sset_count
= dsa_cpu_port_get_sset_count
;
927 ops
->get_ethtool_stats
= dsa_cpu_port_get_ethtool_stats
;
928 ops
->get_strings
= dsa_cpu_port_get_strings
;
931 static int dsa_slave_get_rxnfc(struct net_device
*dev
,
932 struct ethtool_rxnfc
*nfc
, u32
*rule_locs
)
934 struct dsa_slave_priv
*p
= netdev_priv(dev
);
935 struct dsa_switch
*ds
= p
->dp
->ds
;
937 if (!ds
->ops
->get_rxnfc
)
940 return ds
->ops
->get_rxnfc(ds
, p
->dp
->index
, nfc
, rule_locs
);
943 static int dsa_slave_set_rxnfc(struct net_device
*dev
,
944 struct ethtool_rxnfc
*nfc
)
946 struct dsa_slave_priv
*p
= netdev_priv(dev
);
947 struct dsa_switch
*ds
= p
->dp
->ds
;
949 if (!ds
->ops
->set_rxnfc
)
952 return ds
->ops
->set_rxnfc(ds
, p
->dp
->index
, nfc
);
955 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
956 .get_drvinfo
= dsa_slave_get_drvinfo
,
957 .get_regs_len
= dsa_slave_get_regs_len
,
958 .get_regs
= dsa_slave_get_regs
,
959 .nway_reset
= dsa_slave_nway_reset
,
960 .get_link
= dsa_slave_get_link
,
961 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
962 .get_eeprom
= dsa_slave_get_eeprom
,
963 .set_eeprom
= dsa_slave_set_eeprom
,
964 .get_strings
= dsa_slave_get_strings
,
965 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
966 .get_sset_count
= dsa_slave_get_sset_count
,
967 .set_wol
= dsa_slave_set_wol
,
968 .get_wol
= dsa_slave_get_wol
,
969 .set_eee
= dsa_slave_set_eee
,
970 .get_eee
= dsa_slave_get_eee
,
971 .get_link_ksettings
= dsa_slave_get_link_ksettings
,
972 .set_link_ksettings
= dsa_slave_set_link_ksettings
,
973 .get_rxnfc
= dsa_slave_get_rxnfc
,
974 .set_rxnfc
= dsa_slave_set_rxnfc
,
977 static const struct net_device_ops dsa_slave_netdev_ops
= {
978 .ndo_open
= dsa_slave_open
,
979 .ndo_stop
= dsa_slave_close
,
980 .ndo_start_xmit
= dsa_slave_xmit
,
981 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
982 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
983 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
984 .ndo_fdb_add
= switchdev_port_fdb_add
,
985 .ndo_fdb_del
= switchdev_port_fdb_del
,
986 .ndo_fdb_dump
= switchdev_port_fdb_dump
,
987 .ndo_do_ioctl
= dsa_slave_ioctl
,
988 .ndo_get_iflink
= dsa_slave_get_iflink
,
989 #ifdef CONFIG_NET_POLL_CONTROLLER
990 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
991 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
992 .ndo_poll_controller
= dsa_slave_poll_controller
,
994 .ndo_bridge_getlink
= switchdev_port_bridge_getlink
,
995 .ndo_bridge_setlink
= switchdev_port_bridge_setlink
,
996 .ndo_bridge_dellink
= switchdev_port_bridge_dellink
,
997 .ndo_get_phys_port_name
= dsa_slave_get_phys_port_name
,
998 .ndo_setup_tc
= dsa_slave_setup_tc
,
999 .ndo_get_stats64
= dsa_slave_get_stats64
,
1002 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
1003 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
1004 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
1005 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
1006 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
1007 .switchdev_port_obj_dump
= dsa_slave_port_obj_dump
,
1010 static struct device_type dsa_type
= {
1014 static void dsa_slave_adjust_link(struct net_device
*dev
)
1016 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1017 struct dsa_switch
*ds
= p
->dp
->ds
;
1018 unsigned int status_changed
= 0;
1020 if (p
->old_link
!= p
->phy
->link
) {
1022 p
->old_link
= p
->phy
->link
;
1025 if (p
->old_duplex
!= p
->phy
->duplex
) {
1027 p
->old_duplex
= p
->phy
->duplex
;
1030 if (p
->old_pause
!= p
->phy
->pause
) {
1032 p
->old_pause
= p
->phy
->pause
;
1035 if (ds
->ops
->adjust_link
&& status_changed
)
1036 ds
->ops
->adjust_link(ds
, p
->dp
->index
, p
->phy
);
1039 phy_print_status(p
->phy
);
1042 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
1043 struct fixed_phy_status
*status
)
1045 struct dsa_slave_priv
*p
;
1046 struct dsa_switch
*ds
;
1049 p
= netdev_priv(dev
);
1051 if (ds
->ops
->fixed_link_update
)
1052 ds
->ops
->fixed_link_update(ds
, p
->dp
->index
, status
);
1058 /* slave device setup *******************************************************/
1059 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
1060 struct net_device
*slave_dev
,
1063 struct dsa_switch
*ds
= p
->dp
->ds
;
1065 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
1067 netdev_err(slave_dev
, "no phy at %d\n", addr
);
1071 /* Use already configured phy mode */
1072 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
1073 p
->phy_interface
= p
->phy
->interface
;
1074 return phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
1078 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
1079 struct net_device
*slave_dev
)
1081 struct dsa_switch
*ds
= p
->dp
->ds
;
1082 struct device_node
*phy_dn
, *port_dn
;
1083 bool phy_is_fixed
= false;
1087 port_dn
= p
->dp
->dn
;
1088 mode
= of_get_phy_mode(port_dn
);
1090 mode
= PHY_INTERFACE_MODE_NA
;
1091 p
->phy_interface
= mode
;
1093 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1094 if (!phy_dn
&& of_phy_is_fixed_link(port_dn
)) {
1095 /* In the case of a fixed PHY, the DT node associated
1096 * to the fixed PHY is the Port DT node
1098 ret
= of_phy_register_fixed_link(port_dn
);
1100 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
1103 phy_is_fixed
= true;
1104 phy_dn
= of_node_get(port_dn
);
1107 if (ds
->ops
->get_phy_flags
)
1108 phy_flags
= ds
->ops
->get_phy_flags(ds
, p
->dp
->index
);
1111 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1113 /* If this PHY address is part of phys_mii_mask, which means
1114 * that we need to divert reads and writes to/from it, then we
1115 * want to bind this device using the slave MII bus created by
1116 * DSA to make that happen.
1118 if (!phy_is_fixed
&& phy_id
>= 0 &&
1119 (ds
->phys_mii_mask
& (1 << phy_id
))) {
1120 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
1122 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
1123 of_node_put(phy_dn
);
1127 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1128 dsa_slave_adjust_link
,
1133 of_node_put(phy_dn
);
1136 if (p
->phy
&& phy_is_fixed
)
1137 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1139 /* We could not connect to a designated PHY, so use the switch internal
1143 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->dp
->index
);
1145 netdev_err(slave_dev
, "failed to connect to port %d: %d\n",
1148 of_phy_deregister_fixed_link(port_dn
);
1153 phy_attached_info(p
->phy
);
1158 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1159 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1160 struct netdev_queue
*txq
,
1163 lockdep_set_class(&txq
->_xmit_lock
,
1164 &dsa_slave_netdev_xmit_lock_key
);
1167 int dsa_slave_suspend(struct net_device
*slave_dev
)
1169 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1171 netif_device_detach(slave_dev
);
1178 phy_suspend(p
->phy
);
1184 int dsa_slave_resume(struct net_device
*slave_dev
)
1186 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1188 netif_device_attach(slave_dev
);
1198 int dsa_slave_create(struct dsa_port
*port
, const char *name
)
1200 struct dsa_switch
*ds
= port
->ds
;
1201 struct dsa_switch_tree
*dst
= ds
->dst
;
1202 struct net_device
*master
;
1203 struct net_device
*slave_dev
;
1204 struct dsa_slave_priv
*p
;
1205 struct dsa_port
*cpu_dp
;
1208 cpu_dp
= ds
->dst
->cpu_dp
;
1209 master
= cpu_dp
->netdev
;
1211 slave_dev
= alloc_netdev(sizeof(struct dsa_slave_priv
), name
,
1212 NET_NAME_UNKNOWN
, ether_setup
);
1213 if (slave_dev
== NULL
)
1216 slave_dev
->features
= master
->vlan_features
| NETIF_F_HW_TC
;
1217 slave_dev
->hw_features
|= NETIF_F_HW_TC
;
1218 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1219 eth_hw_addr_inherit(slave_dev
, master
);
1220 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1221 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1222 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1223 slave_dev
->min_mtu
= 0;
1224 slave_dev
->max_mtu
= ETH_MAX_MTU
;
1225 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1227 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1230 SET_NETDEV_DEV(slave_dev
, port
->ds
->dev
);
1231 slave_dev
->dev
.of_node
= port
->dn
;
1232 slave_dev
->vlan_features
= master
->vlan_features
;
1234 p
= netdev_priv(slave_dev
);
1235 p
->stats64
= netdev_alloc_pcpu_stats(struct pcpu_sw_netstats
);
1237 free_netdev(slave_dev
);
1241 INIT_LIST_HEAD(&p
->mall_tc_list
);
1242 p
->xmit
= dst
->tag_ops
->xmit
;
1248 port
->netdev
= slave_dev
;
1249 ret
= register_netdev(slave_dev
);
1251 netdev_err(master
, "error %d registering interface %s\n",
1252 ret
, slave_dev
->name
);
1253 port
->netdev
= NULL
;
1254 free_percpu(p
->stats64
);
1255 free_netdev(slave_dev
);
1259 netif_carrier_off(slave_dev
);
1261 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1263 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1264 unregister_netdev(slave_dev
);
1265 free_percpu(p
->stats64
);
1266 free_netdev(slave_dev
);
1273 void dsa_slave_destroy(struct net_device
*slave_dev
)
1275 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1276 struct device_node
*port_dn
;
1278 port_dn
= p
->dp
->dn
;
1280 netif_carrier_off(slave_dev
);
1282 phy_disconnect(p
->phy
);
1284 if (of_phy_is_fixed_link(port_dn
))
1285 of_phy_deregister_fixed_link(port_dn
);
1287 unregister_netdev(slave_dev
);
1288 free_percpu(p
->stats64
);
1289 free_netdev(slave_dev
);
1292 static bool dsa_slave_dev_check(struct net_device
*dev
)
1294 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1297 static int dsa_slave_changeupper(struct net_device
*dev
,
1298 struct netdev_notifier_changeupper_info
*info
)
1300 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1301 struct dsa_port
*dp
= p
->dp
;
1302 int err
= NOTIFY_DONE
;
1304 if (netif_is_bridge_master(info
->upper_dev
)) {
1305 if (info
->linking
) {
1306 err
= dsa_port_bridge_join(dp
, info
->upper_dev
);
1307 err
= notifier_from_errno(err
);
1309 dsa_port_bridge_leave(dp
, info
->upper_dev
);
1317 static int dsa_slave_netdevice_event(struct notifier_block
*nb
,
1318 unsigned long event
, void *ptr
)
1320 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1322 if (dev
->netdev_ops
!= &dsa_slave_netdev_ops
)
1325 if (event
== NETDEV_CHANGEUPPER
)
1326 return dsa_slave_changeupper(dev
, ptr
);
1331 static struct notifier_block dsa_slave_nb __read_mostly
= {
1332 .notifier_call
= dsa_slave_netdevice_event
,
1335 int dsa_slave_register_notifier(void)
1337 return register_netdevice_notifier(&dsa_slave_nb
);
1340 void dsa_slave_unregister_notifier(void)
1344 err
= unregister_netdevice_notifier(&dsa_slave_nb
);
1346 pr_err("DSA: failed to unregister slave notifier (%d)\n", err
);