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 struct dsa_slave_dump_ctx
{
203 struct net_device
*dev
;
205 struct netlink_callback
*cb
;
210 dsa_slave_port_fdb_do_dump(const unsigned char *addr
, u16 vid
,
211 bool is_static
, void *data
)
213 struct dsa_slave_dump_ctx
*dump
= data
;
214 u32 portid
= NETLINK_CB(dump
->cb
->skb
).portid
;
215 u32 seq
= dump
->cb
->nlh
->nlmsg_seq
;
216 struct nlmsghdr
*nlh
;
219 if (dump
->idx
< dump
->cb
->args
[2])
222 nlh
= nlmsg_put(dump
->skb
, portid
, seq
, RTM_NEWNEIGH
,
223 sizeof(*ndm
), NLM_F_MULTI
);
227 ndm
= nlmsg_data(nlh
);
228 ndm
->ndm_family
= AF_BRIDGE
;
231 ndm
->ndm_flags
= NTF_SELF
;
233 ndm
->ndm_ifindex
= dump
->dev
->ifindex
;
234 ndm
->ndm_state
= is_static
? NUD_NOARP
: NUD_REACHABLE
;
236 if (nla_put(dump
->skb
, NDA_LLADDR
, ETH_ALEN
, addr
))
237 goto nla_put_failure
;
239 if (vid
&& nla_put_u16(dump
->skb
, NDA_VLAN
, vid
))
240 goto nla_put_failure
;
242 nlmsg_end(dump
->skb
, nlh
);
249 nlmsg_cancel(dump
->skb
, nlh
);
254 dsa_slave_fdb_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
,
255 struct net_device
*dev
, struct net_device
*filter_dev
,
258 struct dsa_slave_dump_ctx dump
= {
264 struct dsa_slave_priv
*p
= netdev_priv(dev
);
265 struct dsa_port
*dp
= p
->dp
;
266 struct dsa_switch
*ds
= dp
->ds
;
269 if (!ds
->ops
->port_fdb_dump
)
272 err
= ds
->ops
->port_fdb_dump(ds
, dp
->index
,
273 dsa_slave_port_fdb_do_dump
,
279 static int dsa_slave_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
281 struct dsa_slave_priv
*p
= netdev_priv(dev
);
284 return phy_mii_ioctl(p
->phy
, ifr
, cmd
);
289 static int dsa_slave_port_attr_set(struct net_device
*dev
,
290 const struct switchdev_attr
*attr
,
291 struct switchdev_trans
*trans
)
293 struct dsa_slave_priv
*p
= netdev_priv(dev
);
294 struct dsa_port
*dp
= p
->dp
;
298 case SWITCHDEV_ATTR_ID_PORT_STP_STATE
:
299 ret
= dsa_port_set_state(dp
, attr
->u
.stp_state
, trans
);
301 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING
:
302 ret
= dsa_port_vlan_filtering(dp
, attr
->u
.vlan_filtering
,
305 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME
:
306 ret
= dsa_port_ageing_time(dp
, attr
->u
.ageing_time
, trans
);
316 static int dsa_slave_port_obj_add(struct net_device
*dev
,
317 const struct switchdev_obj
*obj
,
318 struct switchdev_trans
*trans
)
320 struct dsa_slave_priv
*p
= netdev_priv(dev
);
321 struct dsa_port
*dp
= p
->dp
;
324 /* For the prepare phase, ensure the full set of changes is feasable in
325 * one go in order to signal a failure properly. If an operation is not
326 * supported, return -EOPNOTSUPP.
330 case SWITCHDEV_OBJ_ID_PORT_MDB
:
331 err
= dsa_port_mdb_add(dp
, SWITCHDEV_OBJ_PORT_MDB(obj
), trans
);
333 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
334 err
= dsa_port_vlan_add(dp
, SWITCHDEV_OBJ_PORT_VLAN(obj
),
345 static int dsa_slave_port_obj_del(struct net_device
*dev
,
346 const struct switchdev_obj
*obj
)
348 struct dsa_slave_priv
*p
= netdev_priv(dev
);
349 struct dsa_port
*dp
= p
->dp
;
353 case SWITCHDEV_OBJ_ID_PORT_MDB
:
354 err
= dsa_port_mdb_del(dp
, SWITCHDEV_OBJ_PORT_MDB(obj
));
356 case SWITCHDEV_OBJ_ID_PORT_VLAN
:
357 err
= dsa_port_vlan_del(dp
, SWITCHDEV_OBJ_PORT_VLAN(obj
));
367 static int dsa_slave_port_attr_get(struct net_device
*dev
,
368 struct switchdev_attr
*attr
)
370 struct dsa_slave_priv
*p
= netdev_priv(dev
);
371 struct dsa_switch
*ds
= p
->dp
->ds
;
374 case SWITCHDEV_ATTR_ID_PORT_PARENT_ID
:
375 attr
->u
.ppid
.id_len
= sizeof(ds
->index
);
376 memcpy(&attr
->u
.ppid
.id
, &ds
->index
, attr
->u
.ppid
.id_len
);
378 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT
:
379 attr
->u
.brport_flags_support
= 0;
388 static inline netdev_tx_t
dsa_netpoll_send_skb(struct dsa_slave_priv
*p
,
391 #ifdef CONFIG_NET_POLL_CONTROLLER
393 netpoll_send_skb(p
->netpoll
, skb
);
400 static netdev_tx_t
dsa_slave_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
402 struct dsa_slave_priv
*p
= netdev_priv(dev
);
403 struct pcpu_sw_netstats
*s
;
404 struct sk_buff
*nskb
;
406 s
= this_cpu_ptr(p
->stats64
);
407 u64_stats_update_begin(&s
->syncp
);
409 s
->tx_bytes
+= skb
->len
;
410 u64_stats_update_end(&s
->syncp
);
412 /* Transmit function may have to reallocate the original SKB,
413 * in which case it must have freed it. Only free it here on error.
415 nskb
= p
->xmit(skb
, dev
);
421 /* SKB for netpoll still need to be mangled with the protocol-specific
422 * tag to be successfully transmitted
424 if (unlikely(netpoll_tx_running(dev
)))
425 return dsa_netpoll_send_skb(p
, nskb
);
427 /* Queue the SKB for transmission on the parent interface, but
428 * do not modify its EtherType
430 nskb
->dev
= dsa_master_netdev(p
);
431 dev_queue_xmit(nskb
);
436 /* ethtool operations *******************************************************/
438 dsa_slave_get_link_ksettings(struct net_device
*dev
,
439 struct ethtool_link_ksettings
*cmd
)
441 struct dsa_slave_priv
*p
= netdev_priv(dev
);
446 phy_ethtool_ksettings_get(p
->phy
, cmd
);
452 dsa_slave_set_link_ksettings(struct net_device
*dev
,
453 const struct ethtool_link_ksettings
*cmd
)
455 struct dsa_slave_priv
*p
= netdev_priv(dev
);
458 return phy_ethtool_ksettings_set(p
->phy
, cmd
);
463 static void dsa_slave_get_drvinfo(struct net_device
*dev
,
464 struct ethtool_drvinfo
*drvinfo
)
466 strlcpy(drvinfo
->driver
, "dsa", sizeof(drvinfo
->driver
));
467 strlcpy(drvinfo
->fw_version
, "N/A", sizeof(drvinfo
->fw_version
));
468 strlcpy(drvinfo
->bus_info
, "platform", sizeof(drvinfo
->bus_info
));
471 static int dsa_slave_get_regs_len(struct net_device
*dev
)
473 struct dsa_slave_priv
*p
= netdev_priv(dev
);
474 struct dsa_switch
*ds
= p
->dp
->ds
;
476 if (ds
->ops
->get_regs_len
)
477 return ds
->ops
->get_regs_len(ds
, p
->dp
->index
);
483 dsa_slave_get_regs(struct net_device
*dev
, struct ethtool_regs
*regs
, void *_p
)
485 struct dsa_slave_priv
*p
= netdev_priv(dev
);
486 struct dsa_switch
*ds
= p
->dp
->ds
;
488 if (ds
->ops
->get_regs
)
489 ds
->ops
->get_regs(ds
, p
->dp
->index
, regs
, _p
);
492 static int dsa_slave_nway_reset(struct net_device
*dev
)
494 struct dsa_slave_priv
*p
= netdev_priv(dev
);
497 return genphy_restart_aneg(p
->phy
);
502 static u32
dsa_slave_get_link(struct net_device
*dev
)
504 struct dsa_slave_priv
*p
= netdev_priv(dev
);
506 if (p
->phy
!= NULL
) {
507 genphy_update_link(p
->phy
);
514 static int dsa_slave_get_eeprom_len(struct net_device
*dev
)
516 struct dsa_slave_priv
*p
= netdev_priv(dev
);
517 struct dsa_switch
*ds
= p
->dp
->ds
;
519 if (ds
->cd
&& ds
->cd
->eeprom_len
)
520 return ds
->cd
->eeprom_len
;
522 if (ds
->ops
->get_eeprom_len
)
523 return ds
->ops
->get_eeprom_len(ds
);
528 static int dsa_slave_get_eeprom(struct net_device
*dev
,
529 struct ethtool_eeprom
*eeprom
, u8
*data
)
531 struct dsa_slave_priv
*p
= netdev_priv(dev
);
532 struct dsa_switch
*ds
= p
->dp
->ds
;
534 if (ds
->ops
->get_eeprom
)
535 return ds
->ops
->get_eeprom(ds
, eeprom
, data
);
540 static int dsa_slave_set_eeprom(struct net_device
*dev
,
541 struct ethtool_eeprom
*eeprom
, u8
*data
)
543 struct dsa_slave_priv
*p
= netdev_priv(dev
);
544 struct dsa_switch
*ds
= p
->dp
->ds
;
546 if (ds
->ops
->set_eeprom
)
547 return ds
->ops
->set_eeprom(ds
, eeprom
, data
);
552 static void dsa_slave_get_strings(struct net_device
*dev
,
553 uint32_t stringset
, uint8_t *data
)
555 struct dsa_slave_priv
*p
= netdev_priv(dev
);
556 struct dsa_switch
*ds
= p
->dp
->ds
;
558 if (stringset
== ETH_SS_STATS
) {
559 int len
= ETH_GSTRING_LEN
;
561 strncpy(data
, "tx_packets", len
);
562 strncpy(data
+ len
, "tx_bytes", len
);
563 strncpy(data
+ 2 * len
, "rx_packets", len
);
564 strncpy(data
+ 3 * len
, "rx_bytes", len
);
565 if (ds
->ops
->get_strings
)
566 ds
->ops
->get_strings(ds
, p
->dp
->index
, data
+ 4 * len
);
570 static void dsa_cpu_port_get_ethtool_stats(struct net_device
*dev
,
571 struct ethtool_stats
*stats
,
574 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
575 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
576 struct dsa_switch
*ds
= cpu_dp
->ds
;
577 s8 cpu_port
= cpu_dp
->index
;
580 if (cpu_dp
->ethtool_ops
.get_sset_count
) {
581 count
= cpu_dp
->ethtool_ops
.get_sset_count(dev
, ETH_SS_STATS
);
582 cpu_dp
->ethtool_ops
.get_ethtool_stats(dev
, stats
, data
);
585 if (ds
->ops
->get_ethtool_stats
)
586 ds
->ops
->get_ethtool_stats(ds
, cpu_port
, data
+ count
);
589 static int dsa_cpu_port_get_sset_count(struct net_device
*dev
, int sset
)
591 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
592 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
593 struct dsa_switch
*ds
= cpu_dp
->ds
;
596 if (cpu_dp
->ethtool_ops
.get_sset_count
)
597 count
+= cpu_dp
->ethtool_ops
.get_sset_count(dev
, sset
);
599 if (sset
== ETH_SS_STATS
&& ds
->ops
->get_sset_count
)
600 count
+= ds
->ops
->get_sset_count(ds
);
605 static void dsa_cpu_port_get_strings(struct net_device
*dev
,
606 uint32_t stringset
, uint8_t *data
)
608 struct dsa_switch_tree
*dst
= dev
->dsa_ptr
;
609 struct dsa_port
*cpu_dp
= dsa_get_cpu_port(dst
);
610 struct dsa_switch
*ds
= cpu_dp
->ds
;
611 s8 cpu_port
= cpu_dp
->index
;
612 int len
= ETH_GSTRING_LEN
;
613 int mcount
= 0, count
;
618 snprintf(pfx
, sizeof(pfx
), "p%.2d", cpu_port
);
619 /* We do not want to be NULL-terminated, since this is a prefix */
620 pfx
[sizeof(pfx
) - 1] = '_';
622 if (cpu_dp
->ethtool_ops
.get_sset_count
) {
623 mcount
= cpu_dp
->ethtool_ops
.get_sset_count(dev
, ETH_SS_STATS
);
624 cpu_dp
->ethtool_ops
.get_strings(dev
, stringset
, data
);
627 if (stringset
== ETH_SS_STATS
&& ds
->ops
->get_strings
) {
628 ndata
= data
+ mcount
* len
;
629 /* This function copies ETH_GSTRINGS_LEN bytes, we will mangle
630 * the output after to prepend our CPU port prefix we
631 * constructed earlier
633 ds
->ops
->get_strings(ds
, cpu_port
, ndata
);
634 count
= ds
->ops
->get_sset_count(ds
);
635 for (i
= 0; i
< count
; i
++) {
636 memmove(ndata
+ (i
* len
+ sizeof(pfx
)),
637 ndata
+ i
* len
, len
- sizeof(pfx
));
638 memcpy(ndata
+ i
* len
, pfx
, sizeof(pfx
));
643 static void dsa_slave_get_ethtool_stats(struct net_device
*dev
,
644 struct ethtool_stats
*stats
,
647 struct dsa_slave_priv
*p
= netdev_priv(dev
);
648 struct dsa_switch
*ds
= p
->dp
->ds
;
649 struct pcpu_sw_netstats
*s
;
653 for_each_possible_cpu(i
) {
654 u64 tx_packets
, tx_bytes
, rx_packets
, rx_bytes
;
656 s
= per_cpu_ptr(p
->stats64
, i
);
658 start
= u64_stats_fetch_begin_irq(&s
->syncp
);
659 tx_packets
= s
->tx_packets
;
660 tx_bytes
= s
->tx_bytes
;
661 rx_packets
= s
->rx_packets
;
662 rx_bytes
= s
->rx_bytes
;
663 } while (u64_stats_fetch_retry_irq(&s
->syncp
, start
));
664 data
[0] += tx_packets
;
666 data
[2] += rx_packets
;
669 if (ds
->ops
->get_ethtool_stats
)
670 ds
->ops
->get_ethtool_stats(ds
, p
->dp
->index
, data
+ 4);
673 static int dsa_slave_get_sset_count(struct net_device
*dev
, int sset
)
675 struct dsa_slave_priv
*p
= netdev_priv(dev
);
676 struct dsa_switch
*ds
= p
->dp
->ds
;
678 if (sset
== ETH_SS_STATS
) {
682 if (ds
->ops
->get_sset_count
)
683 count
+= ds
->ops
->get_sset_count(ds
);
691 static void dsa_slave_get_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
693 struct dsa_slave_priv
*p
= netdev_priv(dev
);
694 struct dsa_switch
*ds
= p
->dp
->ds
;
696 if (ds
->ops
->get_wol
)
697 ds
->ops
->get_wol(ds
, p
->dp
->index
, w
);
700 static int dsa_slave_set_wol(struct net_device
*dev
, struct ethtool_wolinfo
*w
)
702 struct dsa_slave_priv
*p
= netdev_priv(dev
);
703 struct dsa_switch
*ds
= p
->dp
->ds
;
704 int ret
= -EOPNOTSUPP
;
706 if (ds
->ops
->set_wol
)
707 ret
= ds
->ops
->set_wol(ds
, p
->dp
->index
, w
);
712 static int dsa_slave_set_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
714 struct dsa_slave_priv
*p
= netdev_priv(dev
);
715 struct dsa_switch
*ds
= p
->dp
->ds
;
718 /* Port's PHY and MAC both need to be EEE capable */
722 if (!ds
->ops
->set_mac_eee
)
725 ret
= ds
->ops
->set_mac_eee(ds
, p
->dp
->index
, e
);
729 if (e
->eee_enabled
) {
730 ret
= phy_init_eee(p
->phy
, 0);
735 return phy_ethtool_set_eee(p
->phy
, e
);
738 static int dsa_slave_get_eee(struct net_device
*dev
, struct ethtool_eee
*e
)
740 struct dsa_slave_priv
*p
= netdev_priv(dev
);
741 struct dsa_switch
*ds
= p
->dp
->ds
;
744 /* Port's PHY and MAC both need to be EEE capable */
748 if (!ds
->ops
->get_mac_eee
)
751 ret
= ds
->ops
->get_mac_eee(ds
, p
->dp
->index
, e
);
755 return phy_ethtool_get_eee(p
->phy
, e
);
758 #ifdef CONFIG_NET_POLL_CONTROLLER
759 static int dsa_slave_netpoll_setup(struct net_device
*dev
,
760 struct netpoll_info
*ni
)
762 struct dsa_slave_priv
*p
= netdev_priv(dev
);
763 struct net_device
*master
= dsa_master_netdev(p
);
764 struct netpoll
*netpoll
;
767 netpoll
= kzalloc(sizeof(*netpoll
), GFP_KERNEL
);
771 err
= __netpoll_setup(netpoll
, master
);
777 p
->netpoll
= netpoll
;
782 static void dsa_slave_netpoll_cleanup(struct net_device
*dev
)
784 struct dsa_slave_priv
*p
= netdev_priv(dev
);
785 struct netpoll
*netpoll
= p
->netpoll
;
792 __netpoll_free_async(netpoll
);
795 static void dsa_slave_poll_controller(struct net_device
*dev
)
800 static int dsa_slave_get_phys_port_name(struct net_device
*dev
,
801 char *name
, size_t len
)
803 struct dsa_slave_priv
*p
= netdev_priv(dev
);
805 if (snprintf(name
, len
, "p%d", p
->dp
->index
) >= len
)
811 static struct dsa_mall_tc_entry
*
812 dsa_slave_mall_tc_entry_find(struct dsa_slave_priv
*p
,
813 unsigned long cookie
)
815 struct dsa_mall_tc_entry
*mall_tc_entry
;
817 list_for_each_entry(mall_tc_entry
, &p
->mall_tc_list
, list
)
818 if (mall_tc_entry
->cookie
== cookie
)
819 return mall_tc_entry
;
824 static int dsa_slave_add_cls_matchall(struct net_device
*dev
,
825 struct tc_cls_matchall_offload
*cls
,
828 struct dsa_slave_priv
*p
= netdev_priv(dev
);
829 struct dsa_mall_tc_entry
*mall_tc_entry
;
830 __be16 protocol
= cls
->common
.protocol
;
831 struct dsa_switch
*ds
= p
->dp
->ds
;
832 struct net
*net
= dev_net(dev
);
833 struct dsa_slave_priv
*to_p
;
834 struct net_device
*to_dev
;
835 const struct tc_action
*a
;
836 int err
= -EOPNOTSUPP
;
840 if (!ds
->ops
->port_mirror_add
)
843 if (!tcf_exts_has_one_action(cls
->exts
))
846 tcf_exts_to_list(cls
->exts
, &actions
);
847 a
= list_first_entry(&actions
, struct tc_action
, list
);
849 if (is_tcf_mirred_egress_mirror(a
) && protocol
== htons(ETH_P_ALL
)) {
850 struct dsa_mall_mirror_tc_entry
*mirror
;
852 ifindex
= tcf_mirred_ifindex(a
);
853 to_dev
= __dev_get_by_index(net
, ifindex
);
857 if (!dsa_slave_dev_check(to_dev
))
860 mall_tc_entry
= kzalloc(sizeof(*mall_tc_entry
), GFP_KERNEL
);
864 mall_tc_entry
->cookie
= cls
->cookie
;
865 mall_tc_entry
->type
= DSA_PORT_MALL_MIRROR
;
866 mirror
= &mall_tc_entry
->mirror
;
868 to_p
= netdev_priv(to_dev
);
870 mirror
->to_local_port
= to_p
->dp
->index
;
871 mirror
->ingress
= ingress
;
873 err
= ds
->ops
->port_mirror_add(ds
, p
->dp
->index
, mirror
,
876 kfree(mall_tc_entry
);
880 list_add_tail(&mall_tc_entry
->list
, &p
->mall_tc_list
);
886 static void dsa_slave_del_cls_matchall(struct net_device
*dev
,
887 struct tc_cls_matchall_offload
*cls
)
889 struct dsa_slave_priv
*p
= netdev_priv(dev
);
890 struct dsa_mall_tc_entry
*mall_tc_entry
;
891 struct dsa_switch
*ds
= p
->dp
->ds
;
893 if (!ds
->ops
->port_mirror_del
)
896 mall_tc_entry
= dsa_slave_mall_tc_entry_find(p
, cls
->cookie
);
900 list_del(&mall_tc_entry
->list
);
902 switch (mall_tc_entry
->type
) {
903 case DSA_PORT_MALL_MIRROR
:
904 ds
->ops
->port_mirror_del(ds
, p
->dp
->index
,
905 &mall_tc_entry
->mirror
);
911 kfree(mall_tc_entry
);
914 static int dsa_slave_setup_tc_cls_matchall(struct net_device
*dev
,
915 struct tc_cls_matchall_offload
*cls
)
919 if (is_classid_clsact_ingress(cls
->common
.classid
))
921 else if (is_classid_clsact_egress(cls
->common
.classid
))
926 if (cls
->common
.chain_index
)
929 switch (cls
->command
) {
930 case TC_CLSMATCHALL_REPLACE
:
931 return dsa_slave_add_cls_matchall(dev
, cls
, ingress
);
932 case TC_CLSMATCHALL_DESTROY
:
933 dsa_slave_del_cls_matchall(dev
, cls
);
940 static int dsa_slave_setup_tc(struct net_device
*dev
, enum tc_setup_type type
,
944 case TC_SETUP_CLSMATCHALL
:
945 return dsa_slave_setup_tc_cls_matchall(dev
, type_data
);
951 static void dsa_slave_get_stats64(struct net_device
*dev
,
952 struct rtnl_link_stats64
*stats
)
954 struct dsa_slave_priv
*p
= netdev_priv(dev
);
955 struct pcpu_sw_netstats
*s
;
959 netdev_stats_to_stats64(stats
, &dev
->stats
);
960 for_each_possible_cpu(i
) {
961 u64 tx_packets
, tx_bytes
, rx_packets
, rx_bytes
;
963 s
= per_cpu_ptr(p
->stats64
, i
);
965 start
= u64_stats_fetch_begin_irq(&s
->syncp
);
966 tx_packets
= s
->tx_packets
;
967 tx_bytes
= s
->tx_bytes
;
968 rx_packets
= s
->rx_packets
;
969 rx_bytes
= s
->rx_bytes
;
970 } while (u64_stats_fetch_retry_irq(&s
->syncp
, start
));
972 stats
->tx_packets
+= tx_packets
;
973 stats
->tx_bytes
+= tx_bytes
;
974 stats
->rx_packets
+= rx_packets
;
975 stats
->rx_bytes
+= rx_bytes
;
979 void dsa_cpu_port_ethtool_init(struct ethtool_ops
*ops
)
981 ops
->get_sset_count
= dsa_cpu_port_get_sset_count
;
982 ops
->get_ethtool_stats
= dsa_cpu_port_get_ethtool_stats
;
983 ops
->get_strings
= dsa_cpu_port_get_strings
;
986 static int dsa_slave_get_rxnfc(struct net_device
*dev
,
987 struct ethtool_rxnfc
*nfc
, u32
*rule_locs
)
989 struct dsa_slave_priv
*p
= netdev_priv(dev
);
990 struct dsa_switch
*ds
= p
->dp
->ds
;
992 if (!ds
->ops
->get_rxnfc
)
995 return ds
->ops
->get_rxnfc(ds
, p
->dp
->index
, nfc
, rule_locs
);
998 static int dsa_slave_set_rxnfc(struct net_device
*dev
,
999 struct ethtool_rxnfc
*nfc
)
1001 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1002 struct dsa_switch
*ds
= p
->dp
->ds
;
1004 if (!ds
->ops
->set_rxnfc
)
1007 return ds
->ops
->set_rxnfc(ds
, p
->dp
->index
, nfc
);
1010 static const struct ethtool_ops dsa_slave_ethtool_ops
= {
1011 .get_drvinfo
= dsa_slave_get_drvinfo
,
1012 .get_regs_len
= dsa_slave_get_regs_len
,
1013 .get_regs
= dsa_slave_get_regs
,
1014 .nway_reset
= dsa_slave_nway_reset
,
1015 .get_link
= dsa_slave_get_link
,
1016 .get_eeprom_len
= dsa_slave_get_eeprom_len
,
1017 .get_eeprom
= dsa_slave_get_eeprom
,
1018 .set_eeprom
= dsa_slave_set_eeprom
,
1019 .get_strings
= dsa_slave_get_strings
,
1020 .get_ethtool_stats
= dsa_slave_get_ethtool_stats
,
1021 .get_sset_count
= dsa_slave_get_sset_count
,
1022 .set_wol
= dsa_slave_set_wol
,
1023 .get_wol
= dsa_slave_get_wol
,
1024 .set_eee
= dsa_slave_set_eee
,
1025 .get_eee
= dsa_slave_get_eee
,
1026 .get_link_ksettings
= dsa_slave_get_link_ksettings
,
1027 .set_link_ksettings
= dsa_slave_set_link_ksettings
,
1028 .get_rxnfc
= dsa_slave_get_rxnfc
,
1029 .set_rxnfc
= dsa_slave_set_rxnfc
,
1032 static const struct net_device_ops dsa_slave_netdev_ops
= {
1033 .ndo_open
= dsa_slave_open
,
1034 .ndo_stop
= dsa_slave_close
,
1035 .ndo_start_xmit
= dsa_slave_xmit
,
1036 .ndo_change_rx_flags
= dsa_slave_change_rx_flags
,
1037 .ndo_set_rx_mode
= dsa_slave_set_rx_mode
,
1038 .ndo_set_mac_address
= dsa_slave_set_mac_address
,
1039 .ndo_fdb_add
= dsa_legacy_fdb_add
,
1040 .ndo_fdb_del
= dsa_legacy_fdb_del
,
1041 .ndo_fdb_dump
= dsa_slave_fdb_dump
,
1042 .ndo_do_ioctl
= dsa_slave_ioctl
,
1043 .ndo_get_iflink
= dsa_slave_get_iflink
,
1044 #ifdef CONFIG_NET_POLL_CONTROLLER
1045 .ndo_netpoll_setup
= dsa_slave_netpoll_setup
,
1046 .ndo_netpoll_cleanup
= dsa_slave_netpoll_cleanup
,
1047 .ndo_poll_controller
= dsa_slave_poll_controller
,
1049 .ndo_get_phys_port_name
= dsa_slave_get_phys_port_name
,
1050 .ndo_setup_tc
= dsa_slave_setup_tc
,
1051 .ndo_get_stats64
= dsa_slave_get_stats64
,
1054 static const struct switchdev_ops dsa_slave_switchdev_ops
= {
1055 .switchdev_port_attr_get
= dsa_slave_port_attr_get
,
1056 .switchdev_port_attr_set
= dsa_slave_port_attr_set
,
1057 .switchdev_port_obj_add
= dsa_slave_port_obj_add
,
1058 .switchdev_port_obj_del
= dsa_slave_port_obj_del
,
1061 static struct device_type dsa_type
= {
1065 static void dsa_slave_adjust_link(struct net_device
*dev
)
1067 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1068 struct dsa_switch
*ds
= p
->dp
->ds
;
1069 unsigned int status_changed
= 0;
1071 if (p
->old_link
!= p
->phy
->link
) {
1073 p
->old_link
= p
->phy
->link
;
1076 if (p
->old_duplex
!= p
->phy
->duplex
) {
1078 p
->old_duplex
= p
->phy
->duplex
;
1081 if (p
->old_pause
!= p
->phy
->pause
) {
1083 p
->old_pause
= p
->phy
->pause
;
1086 if (ds
->ops
->adjust_link
&& status_changed
)
1087 ds
->ops
->adjust_link(ds
, p
->dp
->index
, p
->phy
);
1090 phy_print_status(p
->phy
);
1093 static int dsa_slave_fixed_link_update(struct net_device
*dev
,
1094 struct fixed_phy_status
*status
)
1096 struct dsa_slave_priv
*p
;
1097 struct dsa_switch
*ds
;
1100 p
= netdev_priv(dev
);
1102 if (ds
->ops
->fixed_link_update
)
1103 ds
->ops
->fixed_link_update(ds
, p
->dp
->index
, status
);
1109 /* slave device setup *******************************************************/
1110 static int dsa_slave_phy_connect(struct dsa_slave_priv
*p
,
1111 struct net_device
*slave_dev
,
1114 struct dsa_switch
*ds
= p
->dp
->ds
;
1116 p
->phy
= mdiobus_get_phy(ds
->slave_mii_bus
, addr
);
1118 netdev_err(slave_dev
, "no phy at %d\n", addr
);
1122 /* Use already configured phy mode */
1123 if (p
->phy_interface
== PHY_INTERFACE_MODE_NA
)
1124 p
->phy_interface
= p
->phy
->interface
;
1125 return phy_connect_direct(slave_dev
, p
->phy
, dsa_slave_adjust_link
,
1129 static int dsa_slave_phy_setup(struct dsa_slave_priv
*p
,
1130 struct net_device
*slave_dev
)
1132 struct dsa_switch
*ds
= p
->dp
->ds
;
1133 struct device_node
*phy_dn
, *port_dn
;
1134 bool phy_is_fixed
= false;
1138 port_dn
= p
->dp
->dn
;
1139 mode
= of_get_phy_mode(port_dn
);
1141 mode
= PHY_INTERFACE_MODE_NA
;
1142 p
->phy_interface
= mode
;
1144 phy_dn
= of_parse_phandle(port_dn
, "phy-handle", 0);
1145 if (!phy_dn
&& of_phy_is_fixed_link(port_dn
)) {
1146 /* In the case of a fixed PHY, the DT node associated
1147 * to the fixed PHY is the Port DT node
1149 ret
= of_phy_register_fixed_link(port_dn
);
1151 netdev_err(slave_dev
, "failed to register fixed PHY: %d\n", ret
);
1154 phy_is_fixed
= true;
1155 phy_dn
= of_node_get(port_dn
);
1158 if (ds
->ops
->get_phy_flags
)
1159 phy_flags
= ds
->ops
->get_phy_flags(ds
, p
->dp
->index
);
1162 int phy_id
= of_mdio_parse_addr(&slave_dev
->dev
, phy_dn
);
1164 /* If this PHY address is part of phys_mii_mask, which means
1165 * that we need to divert reads and writes to/from it, then we
1166 * want to bind this device using the slave MII bus created by
1167 * DSA to make that happen.
1169 if (!phy_is_fixed
&& phy_id
>= 0 &&
1170 (ds
->phys_mii_mask
& (1 << phy_id
))) {
1171 ret
= dsa_slave_phy_connect(p
, slave_dev
, phy_id
);
1173 netdev_err(slave_dev
, "failed to connect to phy%d: %d\n", phy_id
, ret
);
1174 of_node_put(phy_dn
);
1178 p
->phy
= of_phy_connect(slave_dev
, phy_dn
,
1179 dsa_slave_adjust_link
,
1184 of_node_put(phy_dn
);
1187 if (p
->phy
&& phy_is_fixed
)
1188 fixed_phy_set_link_update(p
->phy
, dsa_slave_fixed_link_update
);
1190 /* We could not connect to a designated PHY, so use the switch internal
1194 ret
= dsa_slave_phy_connect(p
, slave_dev
, p
->dp
->index
);
1196 netdev_err(slave_dev
, "failed to connect to port %d: %d\n",
1199 of_phy_deregister_fixed_link(port_dn
);
1204 phy_attached_info(p
->phy
);
1209 static struct lock_class_key dsa_slave_netdev_xmit_lock_key
;
1210 static void dsa_slave_set_lockdep_class_one(struct net_device
*dev
,
1211 struct netdev_queue
*txq
,
1214 lockdep_set_class(&txq
->_xmit_lock
,
1215 &dsa_slave_netdev_xmit_lock_key
);
1218 int dsa_slave_suspend(struct net_device
*slave_dev
)
1220 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1222 netif_device_detach(slave_dev
);
1229 phy_suspend(p
->phy
);
1235 int dsa_slave_resume(struct net_device
*slave_dev
)
1237 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1239 netif_device_attach(slave_dev
);
1249 int dsa_slave_create(struct dsa_port
*port
, const char *name
)
1251 struct dsa_switch
*ds
= port
->ds
;
1252 struct dsa_switch_tree
*dst
= ds
->dst
;
1253 struct net_device
*master
;
1254 struct net_device
*slave_dev
;
1255 struct dsa_slave_priv
*p
;
1256 struct dsa_port
*cpu_dp
;
1259 cpu_dp
= ds
->dst
->cpu_dp
;
1260 master
= cpu_dp
->netdev
;
1262 if (!ds
->num_tx_queues
)
1263 ds
->num_tx_queues
= 1;
1265 slave_dev
= alloc_netdev_mqs(sizeof(struct dsa_slave_priv
), name
,
1266 NET_NAME_UNKNOWN
, ether_setup
,
1267 ds
->num_tx_queues
, 1);
1268 if (slave_dev
== NULL
)
1271 slave_dev
->features
= master
->vlan_features
| NETIF_F_HW_TC
;
1272 slave_dev
->hw_features
|= NETIF_F_HW_TC
;
1273 slave_dev
->ethtool_ops
= &dsa_slave_ethtool_ops
;
1274 eth_hw_addr_inherit(slave_dev
, master
);
1275 slave_dev
->priv_flags
|= IFF_NO_QUEUE
;
1276 slave_dev
->netdev_ops
= &dsa_slave_netdev_ops
;
1277 slave_dev
->switchdev_ops
= &dsa_slave_switchdev_ops
;
1278 slave_dev
->min_mtu
= 0;
1279 slave_dev
->max_mtu
= ETH_MAX_MTU
;
1280 SET_NETDEV_DEVTYPE(slave_dev
, &dsa_type
);
1282 netdev_for_each_tx_queue(slave_dev
, dsa_slave_set_lockdep_class_one
,
1285 SET_NETDEV_DEV(slave_dev
, port
->ds
->dev
);
1286 slave_dev
->dev
.of_node
= port
->dn
;
1287 slave_dev
->vlan_features
= master
->vlan_features
;
1289 p
= netdev_priv(slave_dev
);
1290 p
->stats64
= netdev_alloc_pcpu_stats(struct pcpu_sw_netstats
);
1292 free_netdev(slave_dev
);
1296 INIT_LIST_HEAD(&p
->mall_tc_list
);
1297 p
->xmit
= dst
->tag_ops
->xmit
;
1303 port
->netdev
= slave_dev
;
1304 ret
= register_netdev(slave_dev
);
1306 netdev_err(master
, "error %d registering interface %s\n",
1307 ret
, slave_dev
->name
);
1308 port
->netdev
= NULL
;
1309 free_percpu(p
->stats64
);
1310 free_netdev(slave_dev
);
1314 netif_carrier_off(slave_dev
);
1316 ret
= dsa_slave_phy_setup(p
, slave_dev
);
1318 netdev_err(master
, "error %d setting up slave phy\n", ret
);
1319 unregister_netdev(slave_dev
);
1320 free_percpu(p
->stats64
);
1321 free_netdev(slave_dev
);
1328 void dsa_slave_destroy(struct net_device
*slave_dev
)
1330 struct dsa_slave_priv
*p
= netdev_priv(slave_dev
);
1331 struct device_node
*port_dn
;
1333 port_dn
= p
->dp
->dn
;
1335 netif_carrier_off(slave_dev
);
1337 phy_disconnect(p
->phy
);
1339 if (of_phy_is_fixed_link(port_dn
))
1340 of_phy_deregister_fixed_link(port_dn
);
1342 unregister_netdev(slave_dev
);
1343 free_percpu(p
->stats64
);
1344 free_netdev(slave_dev
);
1347 static bool dsa_slave_dev_check(struct net_device
*dev
)
1349 return dev
->netdev_ops
== &dsa_slave_netdev_ops
;
1352 static int dsa_slave_changeupper(struct net_device
*dev
,
1353 struct netdev_notifier_changeupper_info
*info
)
1355 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1356 struct dsa_port
*dp
= p
->dp
;
1357 int err
= NOTIFY_DONE
;
1359 if (netif_is_bridge_master(info
->upper_dev
)) {
1360 if (info
->linking
) {
1361 err
= dsa_port_bridge_join(dp
, info
->upper_dev
);
1362 err
= notifier_from_errno(err
);
1364 dsa_port_bridge_leave(dp
, info
->upper_dev
);
1372 static int dsa_slave_netdevice_event(struct notifier_block
*nb
,
1373 unsigned long event
, void *ptr
)
1375 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
1377 if (dev
->netdev_ops
!= &dsa_slave_netdev_ops
)
1380 if (event
== NETDEV_CHANGEUPPER
)
1381 return dsa_slave_changeupper(dev
, ptr
);
1386 struct dsa_switchdev_event_work
{
1387 struct work_struct work
;
1388 struct switchdev_notifier_fdb_info fdb_info
;
1389 struct net_device
*dev
;
1390 unsigned long event
;
1393 static void dsa_slave_switchdev_event_work(struct work_struct
*work
)
1395 struct dsa_switchdev_event_work
*switchdev_work
=
1396 container_of(work
, struct dsa_switchdev_event_work
, work
);
1397 struct net_device
*dev
= switchdev_work
->dev
;
1398 struct switchdev_notifier_fdb_info
*fdb_info
;
1399 struct dsa_slave_priv
*p
= netdev_priv(dev
);
1403 switch (switchdev_work
->event
) {
1404 case SWITCHDEV_FDB_ADD_TO_DEVICE
:
1405 fdb_info
= &switchdev_work
->fdb_info
;
1406 err
= dsa_port_fdb_add(p
->dp
, fdb_info
->addr
, fdb_info
->vid
);
1408 netdev_dbg(dev
, "fdb add failed err=%d\n", err
);
1411 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED
, dev
,
1415 case SWITCHDEV_FDB_DEL_TO_DEVICE
:
1416 fdb_info
= &switchdev_work
->fdb_info
;
1417 err
= dsa_port_fdb_del(p
->dp
, fdb_info
->addr
, fdb_info
->vid
);
1419 netdev_dbg(dev
, "fdb del failed err=%d\n", err
);
1426 kfree(switchdev_work
->fdb_info
.addr
);
1427 kfree(switchdev_work
);
1432 dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work
*
1434 const struct switchdev_notifier_fdb_info
*
1437 memcpy(&switchdev_work
->fdb_info
, fdb_info
,
1438 sizeof(switchdev_work
->fdb_info
));
1439 switchdev_work
->fdb_info
.addr
= kzalloc(ETH_ALEN
, GFP_ATOMIC
);
1440 if (!switchdev_work
->fdb_info
.addr
)
1442 ether_addr_copy((u8
*)switchdev_work
->fdb_info
.addr
,
1447 /* Called under rcu_read_lock() */
1448 static int dsa_slave_switchdev_event(struct notifier_block
*unused
,
1449 unsigned long event
, void *ptr
)
1451 struct net_device
*dev
= switchdev_notifier_info_to_dev(ptr
);
1452 struct dsa_switchdev_event_work
*switchdev_work
;
1454 if (!dsa_slave_dev_check(dev
))
1457 switchdev_work
= kzalloc(sizeof(*switchdev_work
), GFP_ATOMIC
);
1458 if (!switchdev_work
)
1461 INIT_WORK(&switchdev_work
->work
,
1462 dsa_slave_switchdev_event_work
);
1463 switchdev_work
->dev
= dev
;
1464 switchdev_work
->event
= event
;
1467 case SWITCHDEV_FDB_ADD_TO_DEVICE
: /* fall through */
1468 case SWITCHDEV_FDB_DEL_TO_DEVICE
:
1469 if (dsa_slave_switchdev_fdb_work_init(switchdev_work
,
1471 goto err_fdb_work_init
;
1475 kfree(switchdev_work
);
1479 dsa_schedule_work(&switchdev_work
->work
);
1483 kfree(switchdev_work
);
1487 static struct notifier_block dsa_slave_nb __read_mostly
= {
1488 .notifier_call
= dsa_slave_netdevice_event
,
1491 static struct notifier_block dsa_slave_switchdev_notifier
= {
1492 .notifier_call
= dsa_slave_switchdev_event
,
1495 int dsa_slave_register_notifier(void)
1499 err
= register_netdevice_notifier(&dsa_slave_nb
);
1503 err
= register_switchdev_notifier(&dsa_slave_switchdev_notifier
);
1505 goto err_switchdev_nb
;
1510 unregister_netdevice_notifier(&dsa_slave_nb
);
1514 void dsa_slave_unregister_notifier(void)
1518 err
= unregister_switchdev_notifier(&dsa_slave_switchdev_notifier
);
1520 pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err
);
1522 err
= unregister_netdevice_notifier(&dsa_slave_nb
);
1524 pr_err("DSA: failed to unregister slave notifier (%d)\n", err
);