1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * net/dsa/slave.c - Slave device handling
4 * Copyright (c) 2008-2009 Marvell Semiconductor
7 #include <linux/list.h>
8 #include <linux/etherdevice.h>
9 #include <linux/netdevice.h>
10 #include <linux/phy.h>
11 #include <linux/phy_fixed.h>
12 #include <linux/phylink.h>
13 #include <linux/of_net.h>
14 #include <linux/of_mdio.h>
15 #include <linux/mdio.h>
16 #include <net/rtnetlink.h>
17 #include <net/pkt_cls.h>
18 #include <net/tc_act/tc_mirred.h>
19 #include <linux/if_bridge.h>
20 #include <linux/netpoll.h>
21 #include <linux/ptp_classify.h>
25 static bool dsa_slave_dev_check(const struct net_device *dev);
27 /* slave mii_bus handling ***************************************************/
28 static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
30 struct dsa_switch *ds = bus->priv;
32 if (ds->phys_mii_mask & (1 << addr))
33 return ds->ops->phy_read(ds, addr, reg);
38 static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
40 struct dsa_switch *ds = bus->priv;
42 if (ds->phys_mii_mask & (1 << addr))
43 return ds->ops->phy_write(ds, addr, reg, val);
48 void dsa_slave_mii_bus_init(struct dsa_switch *ds)
50 ds->slave_mii_bus->priv = (void *)ds;
51 ds->slave_mii_bus->name = "dsa slave smi";
52 ds->slave_mii_bus->read = dsa_slave_phy_read;
53 ds->slave_mii_bus->write = dsa_slave_phy_write;
54 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
55 ds->dst->index, ds->index);
56 ds->slave_mii_bus->parent = ds->dev;
57 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
61 /* slave device handling ****************************************************/
62 static int dsa_slave_get_iflink(const struct net_device *dev)
64 return dsa_slave_to_master(dev)->ifindex;
67 static int dsa_slave_open(struct net_device *dev)
69 struct net_device *master = dsa_slave_to_master(dev);
70 struct dsa_port *dp = dsa_slave_to_port(dev);
73 if (!(master->flags & IFF_UP))
76 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
77 err = dev_uc_add(master, dev->dev_addr);
82 if (dev->flags & IFF_ALLMULTI) {
83 err = dev_set_allmulti(master, 1);
87 if (dev->flags & IFF_PROMISC) {
88 err = dev_set_promiscuity(master, 1);
93 err = dsa_port_enable(dp, dev->phydev);
97 phylink_start(dp->pl);
102 if (dev->flags & IFF_PROMISC)
103 dev_set_promiscuity(master, -1);
105 if (dev->flags & IFF_ALLMULTI)
106 dev_set_allmulti(master, -1);
108 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
109 dev_uc_del(master, dev->dev_addr);
114 static int dsa_slave_close(struct net_device *dev)
116 struct net_device *master = dsa_slave_to_master(dev);
117 struct dsa_port *dp = dsa_slave_to_port(dev);
119 cancel_work_sync(&dp->xmit_work);
120 skb_queue_purge(&dp->xmit_queue);
122 phylink_stop(dp->pl);
124 dsa_port_disable(dp);
126 dev_mc_unsync(master, dev);
127 dev_uc_unsync(master, dev);
128 if (dev->flags & IFF_ALLMULTI)
129 dev_set_allmulti(master, -1);
130 if (dev->flags & IFF_PROMISC)
131 dev_set_promiscuity(master, -1);
133 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
134 dev_uc_del(master, dev->dev_addr);
139 static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
141 struct net_device *master = dsa_slave_to_master(dev);
142 if (dev->flags & IFF_UP) {
143 if (change & IFF_ALLMULTI)
144 dev_set_allmulti(master,
145 dev->flags & IFF_ALLMULTI ? 1 : -1);
146 if (change & IFF_PROMISC)
147 dev_set_promiscuity(master,
148 dev->flags & IFF_PROMISC ? 1 : -1);
152 static void dsa_slave_set_rx_mode(struct net_device *dev)
154 struct net_device *master = dsa_slave_to_master(dev);
156 dev_mc_sync(master, dev);
157 dev_uc_sync(master, dev);
160 static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
162 struct net_device *master = dsa_slave_to_master(dev);
163 struct sockaddr *addr = a;
166 if (!is_valid_ether_addr(addr->sa_data))
167 return -EADDRNOTAVAIL;
169 if (!(dev->flags & IFF_UP))
172 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
173 err = dev_uc_add(master, addr->sa_data);
178 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
179 dev_uc_del(master, dev->dev_addr);
182 ether_addr_copy(dev->dev_addr, addr->sa_data);
187 struct dsa_slave_dump_ctx {
188 struct net_device *dev;
190 struct netlink_callback *cb;
195 dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
196 bool is_static, void *data)
198 struct dsa_slave_dump_ctx *dump = data;
199 u32 portid = NETLINK_CB(dump->cb->skb).portid;
200 u32 seq = dump->cb->nlh->nlmsg_seq;
201 struct nlmsghdr *nlh;
204 if (dump->idx < dump->cb->args[2])
207 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
208 sizeof(*ndm), NLM_F_MULTI);
212 ndm = nlmsg_data(nlh);
213 ndm->ndm_family = AF_BRIDGE;
216 ndm->ndm_flags = NTF_SELF;
218 ndm->ndm_ifindex = dump->dev->ifindex;
219 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
221 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
222 goto nla_put_failure;
224 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
225 goto nla_put_failure;
227 nlmsg_end(dump->skb, nlh);
234 nlmsg_cancel(dump->skb, nlh);
239 dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
240 struct net_device *dev, struct net_device *filter_dev,
243 struct dsa_port *dp = dsa_slave_to_port(dev);
244 struct dsa_slave_dump_ctx dump = {
252 err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump);
258 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
260 struct dsa_slave_priv *p = netdev_priv(dev);
261 struct dsa_switch *ds = p->dp->ds;
262 int port = p->dp->index;
264 /* Pass through to switch driver if it supports timestamping */
267 if (ds->ops->port_hwtstamp_get)
268 return ds->ops->port_hwtstamp_get(ds, port, ifr);
271 if (ds->ops->port_hwtstamp_set)
272 return ds->ops->port_hwtstamp_set(ds, port, ifr);
276 return phylink_mii_ioctl(p->dp->pl, ifr, cmd);
279 static int dsa_slave_port_attr_set(struct net_device *dev,
280 const struct switchdev_attr *attr,
281 struct switchdev_trans *trans)
283 struct dsa_port *dp = dsa_slave_to_port(dev);
287 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
288 ret = dsa_port_set_state(dp, attr->u.stp_state, trans);
290 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
291 ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
294 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
295 ret = dsa_port_ageing_time(dp, attr->u.ageing_time, trans);
297 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
298 ret = dsa_port_pre_bridge_flags(dp, attr->u.brport_flags,
301 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
302 ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, trans);
304 case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER:
305 ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, trans);
315 static int dsa_slave_vlan_add(struct net_device *dev,
316 const struct switchdev_obj *obj,
317 struct switchdev_trans *trans)
319 struct dsa_port *dp = dsa_slave_to_port(dev);
320 struct switchdev_obj_port_vlan vlan;
323 if (obj->orig_dev != dev)
326 if (dp->bridge_dev && !br_vlan_enabled(dp->bridge_dev))
329 vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
331 err = dsa_port_vlan_add(dp, &vlan, trans);
335 /* We need the dedicated CPU port to be a member of the VLAN as well.
336 * Even though drivers often handle CPU membership in special ways,
337 * it doesn't make sense to program a PVID, so clear this flag.
339 vlan.flags &= ~BRIDGE_VLAN_INFO_PVID;
341 err = dsa_port_vlan_add(dp->cpu_dp, &vlan, trans);
348 static int dsa_slave_port_obj_add(struct net_device *dev,
349 const struct switchdev_obj *obj,
350 struct switchdev_trans *trans,
351 struct netlink_ext_ack *extack)
353 struct dsa_port *dp = dsa_slave_to_port(dev);
356 /* For the prepare phase, ensure the full set of changes is feasable in
357 * one go in order to signal a failure properly. If an operation is not
358 * supported, return -EOPNOTSUPP.
362 case SWITCHDEV_OBJ_ID_PORT_MDB:
363 if (obj->orig_dev != dev)
365 err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj), trans);
367 case SWITCHDEV_OBJ_ID_HOST_MDB:
368 /* DSA can directly translate this to a normal MDB add,
369 * but on the CPU port.
371 err = dsa_port_mdb_add(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj),
374 case SWITCHDEV_OBJ_ID_PORT_VLAN:
375 err = dsa_slave_vlan_add(dev, obj, trans);
385 static int dsa_slave_vlan_del(struct net_device *dev,
386 const struct switchdev_obj *obj)
388 struct dsa_port *dp = dsa_slave_to_port(dev);
390 if (obj->orig_dev != dev)
393 if (dp->bridge_dev && !br_vlan_enabled(dp->bridge_dev))
396 /* Do not deprogram the CPU port as it may be shared with other user
397 * ports which can be members of this VLAN as well.
399 return dsa_port_vlan_del(dp, SWITCHDEV_OBJ_PORT_VLAN(obj));
402 static int dsa_slave_port_obj_del(struct net_device *dev,
403 const struct switchdev_obj *obj)
405 struct dsa_port *dp = dsa_slave_to_port(dev);
409 case SWITCHDEV_OBJ_ID_PORT_MDB:
410 if (obj->orig_dev != dev)
412 err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
414 case SWITCHDEV_OBJ_ID_HOST_MDB:
415 /* DSA can directly translate this to a normal MDB add,
416 * but on the CPU port.
418 err = dsa_port_mdb_del(dp->cpu_dp, SWITCHDEV_OBJ_PORT_MDB(obj));
420 case SWITCHDEV_OBJ_ID_PORT_VLAN:
421 err = dsa_slave_vlan_del(dev, obj);
431 static int dsa_slave_get_port_parent_id(struct net_device *dev,
432 struct netdev_phys_item_id *ppid)
434 struct dsa_port *dp = dsa_slave_to_port(dev);
435 struct dsa_switch *ds = dp->ds;
436 struct dsa_switch_tree *dst = ds->dst;
438 /* For non-legacy ports, devlink is used and it takes
439 * care of the name generation. This ndo implementation
440 * should be removed with legacy support.
445 ppid->id_len = sizeof(dst->index);
446 memcpy(&ppid->id, &dst->index, ppid->id_len);
451 static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev,
454 #ifdef CONFIG_NET_POLL_CONTROLLER
455 struct dsa_slave_priv *p = netdev_priv(dev);
458 netpoll_send_skb(p->netpoll, skb);
465 static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
468 struct dsa_switch *ds = p->dp->ds;
469 struct sk_buff *clone;
472 type = ptp_classify_raw(skb);
473 if (type == PTP_CLASS_NONE)
476 if (!ds->ops->port_txtstamp)
479 clone = skb_clone_sk(skb);
483 DSA_SKB_CB(skb)->clone = clone;
485 if (ds->ops->port_txtstamp(ds, p->dp->index, clone, type))
491 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev)
493 /* SKB for netpoll still need to be mangled with the protocol-specific
494 * tag to be successfully transmitted
496 if (unlikely(netpoll_tx_running(dev)))
497 return dsa_slave_netpoll_send_skb(dev, skb);
499 /* Queue the SKB for transmission on the parent interface, but
500 * do not modify its EtherType
502 skb->dev = dsa_slave_to_master(dev);
507 EXPORT_SYMBOL_GPL(dsa_enqueue_skb);
509 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
511 struct dsa_slave_priv *p = netdev_priv(dev);
512 struct pcpu_sw_netstats *s;
513 struct sk_buff *nskb;
515 s = this_cpu_ptr(p->stats64);
516 u64_stats_update_begin(&s->syncp);
518 s->tx_bytes += skb->len;
519 u64_stats_update_end(&s->syncp);
521 DSA_SKB_CB(skb)->deferred_xmit = false;
522 DSA_SKB_CB(skb)->clone = NULL;
524 /* Identify PTP protocol packets, clone them, and pass them to the
527 dsa_skb_tx_timestamp(p, skb);
529 /* Transmit function may have to reallocate the original SKB,
530 * in which case it must have freed it. Only free it here on error.
532 nskb = p->xmit(skb, dev);
534 if (!DSA_SKB_CB(skb)->deferred_xmit)
539 return dsa_enqueue_skb(nskb, dev);
542 void *dsa_defer_xmit(struct sk_buff *skb, struct net_device *dev)
544 struct dsa_port *dp = dsa_slave_to_port(dev);
546 DSA_SKB_CB(skb)->deferred_xmit = true;
548 skb_queue_tail(&dp->xmit_queue, skb);
549 schedule_work(&dp->xmit_work);
552 EXPORT_SYMBOL_GPL(dsa_defer_xmit);
554 static void dsa_port_xmit_work(struct work_struct *work)
556 struct dsa_port *dp = container_of(work, struct dsa_port, xmit_work);
557 struct dsa_switch *ds = dp->ds;
560 if (unlikely(!ds->ops->port_deferred_xmit))
563 while ((skb = skb_dequeue(&dp->xmit_queue)) != NULL)
564 ds->ops->port_deferred_xmit(ds, dp->index, skb);
567 /* ethtool operations *******************************************************/
569 static void dsa_slave_get_drvinfo(struct net_device *dev,
570 struct ethtool_drvinfo *drvinfo)
572 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
573 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
574 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
577 static int dsa_slave_get_regs_len(struct net_device *dev)
579 struct dsa_port *dp = dsa_slave_to_port(dev);
580 struct dsa_switch *ds = dp->ds;
582 if (ds->ops->get_regs_len)
583 return ds->ops->get_regs_len(ds, dp->index);
589 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
591 struct dsa_port *dp = dsa_slave_to_port(dev);
592 struct dsa_switch *ds = dp->ds;
594 if (ds->ops->get_regs)
595 ds->ops->get_regs(ds, dp->index, regs, _p);
598 static int dsa_slave_nway_reset(struct net_device *dev)
600 struct dsa_port *dp = dsa_slave_to_port(dev);
602 return phylink_ethtool_nway_reset(dp->pl);
605 static int dsa_slave_get_eeprom_len(struct net_device *dev)
607 struct dsa_port *dp = dsa_slave_to_port(dev);
608 struct dsa_switch *ds = dp->ds;
610 if (ds->cd && ds->cd->eeprom_len)
611 return ds->cd->eeprom_len;
613 if (ds->ops->get_eeprom_len)
614 return ds->ops->get_eeprom_len(ds);
619 static int dsa_slave_get_eeprom(struct net_device *dev,
620 struct ethtool_eeprom *eeprom, u8 *data)
622 struct dsa_port *dp = dsa_slave_to_port(dev);
623 struct dsa_switch *ds = dp->ds;
625 if (ds->ops->get_eeprom)
626 return ds->ops->get_eeprom(ds, eeprom, data);
631 static int dsa_slave_set_eeprom(struct net_device *dev,
632 struct ethtool_eeprom *eeprom, u8 *data)
634 struct dsa_port *dp = dsa_slave_to_port(dev);
635 struct dsa_switch *ds = dp->ds;
637 if (ds->ops->set_eeprom)
638 return ds->ops->set_eeprom(ds, eeprom, data);
643 static void dsa_slave_get_strings(struct net_device *dev,
644 uint32_t stringset, uint8_t *data)
646 struct dsa_port *dp = dsa_slave_to_port(dev);
647 struct dsa_switch *ds = dp->ds;
649 if (stringset == ETH_SS_STATS) {
650 int len = ETH_GSTRING_LEN;
652 strncpy(data, "tx_packets", len);
653 strncpy(data + len, "tx_bytes", len);
654 strncpy(data + 2 * len, "rx_packets", len);
655 strncpy(data + 3 * len, "rx_bytes", len);
656 if (ds->ops->get_strings)
657 ds->ops->get_strings(ds, dp->index, stringset,
662 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
663 struct ethtool_stats *stats,
666 struct dsa_port *dp = dsa_slave_to_port(dev);
667 struct dsa_slave_priv *p = netdev_priv(dev);
668 struct dsa_switch *ds = dp->ds;
669 struct pcpu_sw_netstats *s;
673 for_each_possible_cpu(i) {
674 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
676 s = per_cpu_ptr(p->stats64, i);
678 start = u64_stats_fetch_begin_irq(&s->syncp);
679 tx_packets = s->tx_packets;
680 tx_bytes = s->tx_bytes;
681 rx_packets = s->rx_packets;
682 rx_bytes = s->rx_bytes;
683 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
684 data[0] += tx_packets;
686 data[2] += rx_packets;
689 if (ds->ops->get_ethtool_stats)
690 ds->ops->get_ethtool_stats(ds, dp->index, data + 4);
693 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
695 struct dsa_port *dp = dsa_slave_to_port(dev);
696 struct dsa_switch *ds = dp->ds;
698 if (sset == ETH_SS_STATS) {
702 if (ds->ops->get_sset_count)
703 count += ds->ops->get_sset_count(ds, dp->index, sset);
711 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
713 struct dsa_port *dp = dsa_slave_to_port(dev);
714 struct dsa_switch *ds = dp->ds;
716 phylink_ethtool_get_wol(dp->pl, w);
718 if (ds->ops->get_wol)
719 ds->ops->get_wol(ds, dp->index, w);
722 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
724 struct dsa_port *dp = dsa_slave_to_port(dev);
725 struct dsa_switch *ds = dp->ds;
726 int ret = -EOPNOTSUPP;
728 phylink_ethtool_set_wol(dp->pl, w);
730 if (ds->ops->set_wol)
731 ret = ds->ops->set_wol(ds, dp->index, w);
736 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
738 struct dsa_port *dp = dsa_slave_to_port(dev);
739 struct dsa_switch *ds = dp->ds;
742 /* Port's PHY and MAC both need to be EEE capable */
743 if (!dev->phydev || !dp->pl)
746 if (!ds->ops->set_mac_eee)
749 ret = ds->ops->set_mac_eee(ds, dp->index, e);
753 return phylink_ethtool_set_eee(dp->pl, e);
756 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
758 struct dsa_port *dp = dsa_slave_to_port(dev);
759 struct dsa_switch *ds = dp->ds;
762 /* Port's PHY and MAC both need to be EEE capable */
763 if (!dev->phydev || !dp->pl)
766 if (!ds->ops->get_mac_eee)
769 ret = ds->ops->get_mac_eee(ds, dp->index, e);
773 return phylink_ethtool_get_eee(dp->pl, e);
776 static int dsa_slave_get_link_ksettings(struct net_device *dev,
777 struct ethtool_link_ksettings *cmd)
779 struct dsa_port *dp = dsa_slave_to_port(dev);
781 return phylink_ethtool_ksettings_get(dp->pl, cmd);
784 static int dsa_slave_set_link_ksettings(struct net_device *dev,
785 const struct ethtool_link_ksettings *cmd)
787 struct dsa_port *dp = dsa_slave_to_port(dev);
789 return phylink_ethtool_ksettings_set(dp->pl, cmd);
792 #ifdef CONFIG_NET_POLL_CONTROLLER
793 static int dsa_slave_netpoll_setup(struct net_device *dev,
794 struct netpoll_info *ni)
796 struct net_device *master = dsa_slave_to_master(dev);
797 struct dsa_slave_priv *p = netdev_priv(dev);
798 struct netpoll *netpoll;
801 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
805 err = __netpoll_setup(netpoll, master);
811 p->netpoll = netpoll;
816 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
818 struct dsa_slave_priv *p = netdev_priv(dev);
819 struct netpoll *netpoll = p->netpoll;
826 __netpoll_free(netpoll);
829 static void dsa_slave_poll_controller(struct net_device *dev)
834 static int dsa_slave_get_phys_port_name(struct net_device *dev,
835 char *name, size_t len)
837 struct dsa_port *dp = dsa_slave_to_port(dev);
839 /* For non-legacy ports, devlink is used and it takes
840 * care of the name generation. This ndo implementation
841 * should be removed with legacy support.
846 if (snprintf(name, len, "p%d", dp->index) >= len)
852 static struct dsa_mall_tc_entry *
853 dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
855 struct dsa_slave_priv *p = netdev_priv(dev);
856 struct dsa_mall_tc_entry *mall_tc_entry;
858 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
859 if (mall_tc_entry->cookie == cookie)
860 return mall_tc_entry;
865 static int dsa_slave_add_cls_matchall(struct net_device *dev,
866 struct tc_cls_matchall_offload *cls,
869 struct dsa_port *dp = dsa_slave_to_port(dev);
870 struct dsa_slave_priv *p = netdev_priv(dev);
871 struct dsa_mall_tc_entry *mall_tc_entry;
872 __be16 protocol = cls->common.protocol;
873 struct dsa_switch *ds = dp->ds;
874 struct flow_action_entry *act;
875 struct dsa_port *to_dp;
876 int err = -EOPNOTSUPP;
878 if (!ds->ops->port_mirror_add)
881 if (!flow_offload_has_one_action(&cls->rule->action))
884 act = &cls->rule->action.entries[0];
886 if (act->id == FLOW_ACTION_MIRRED && protocol == htons(ETH_P_ALL)) {
887 struct dsa_mall_mirror_tc_entry *mirror;
892 if (!dsa_slave_dev_check(act->dev))
895 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
899 mall_tc_entry->cookie = cls->cookie;
900 mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
901 mirror = &mall_tc_entry->mirror;
903 to_dp = dsa_slave_to_port(act->dev);
905 mirror->to_local_port = to_dp->index;
906 mirror->ingress = ingress;
908 err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
910 kfree(mall_tc_entry);
914 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
920 static void dsa_slave_del_cls_matchall(struct net_device *dev,
921 struct tc_cls_matchall_offload *cls)
923 struct dsa_port *dp = dsa_slave_to_port(dev);
924 struct dsa_mall_tc_entry *mall_tc_entry;
925 struct dsa_switch *ds = dp->ds;
927 if (!ds->ops->port_mirror_del)
930 mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie);
934 list_del(&mall_tc_entry->list);
936 switch (mall_tc_entry->type) {
937 case DSA_PORT_MALL_MIRROR:
938 ds->ops->port_mirror_del(ds, dp->index, &mall_tc_entry->mirror);
944 kfree(mall_tc_entry);
947 static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev,
948 struct tc_cls_matchall_offload *cls,
951 if (cls->common.chain_index)
954 switch (cls->command) {
955 case TC_CLSMATCHALL_REPLACE:
956 return dsa_slave_add_cls_matchall(dev, cls, ingress);
957 case TC_CLSMATCHALL_DESTROY:
958 dsa_slave_del_cls_matchall(dev, cls);
965 static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
966 void *cb_priv, bool ingress)
968 struct net_device *dev = cb_priv;
970 if (!tc_can_offload(dev))
974 case TC_SETUP_CLSMATCHALL:
975 return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress);
981 static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type,
982 void *type_data, void *cb_priv)
984 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true);
987 static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type,
988 void *type_data, void *cb_priv)
990 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false);
993 static LIST_HEAD(dsa_slave_block_cb_list);
995 static int dsa_slave_setup_tc_block(struct net_device *dev,
996 struct flow_block_offload *f)
998 struct flow_block_cb *block_cb;
1001 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
1002 cb = dsa_slave_setup_tc_block_cb_ig;
1003 else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
1004 cb = dsa_slave_setup_tc_block_cb_eg;
1008 f->driver_block_list = &dsa_slave_block_cb_list;
1010 switch (f->command) {
1011 case FLOW_BLOCK_BIND:
1012 if (flow_block_cb_is_busy(cb, dev, &dsa_slave_block_cb_list))
1015 block_cb = flow_block_cb_alloc(cb, dev, dev, NULL);
1016 if (IS_ERR(block_cb))
1017 return PTR_ERR(block_cb);
1019 flow_block_cb_add(block_cb, f);
1020 list_add_tail(&block_cb->driver_list, &dsa_slave_block_cb_list);
1022 case FLOW_BLOCK_UNBIND:
1023 block_cb = flow_block_cb_lookup(f->block, cb, dev);
1027 flow_block_cb_remove(block_cb, f);
1028 list_del(&block_cb->driver_list);
1035 static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
1038 struct dsa_port *dp = dsa_slave_to_port(dev);
1039 struct dsa_switch *ds = dp->ds;
1041 if (type == TC_SETUP_BLOCK)
1042 return dsa_slave_setup_tc_block(dev, type_data);
1044 if (!ds->ops->port_setup_tc)
1047 return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
1050 static void dsa_slave_get_stats64(struct net_device *dev,
1051 struct rtnl_link_stats64 *stats)
1053 struct dsa_slave_priv *p = netdev_priv(dev);
1054 struct pcpu_sw_netstats *s;
1058 netdev_stats_to_stats64(stats, &dev->stats);
1059 for_each_possible_cpu(i) {
1060 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
1062 s = per_cpu_ptr(p->stats64, i);
1064 start = u64_stats_fetch_begin_irq(&s->syncp);
1065 tx_packets = s->tx_packets;
1066 tx_bytes = s->tx_bytes;
1067 rx_packets = s->rx_packets;
1068 rx_bytes = s->rx_bytes;
1069 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
1071 stats->tx_packets += tx_packets;
1072 stats->tx_bytes += tx_bytes;
1073 stats->rx_packets += rx_packets;
1074 stats->rx_bytes += rx_bytes;
1078 static int dsa_slave_get_rxnfc(struct net_device *dev,
1079 struct ethtool_rxnfc *nfc, u32 *rule_locs)
1081 struct dsa_port *dp = dsa_slave_to_port(dev);
1082 struct dsa_switch *ds = dp->ds;
1084 if (!ds->ops->get_rxnfc)
1087 return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs);
1090 static int dsa_slave_set_rxnfc(struct net_device *dev,
1091 struct ethtool_rxnfc *nfc)
1093 struct dsa_port *dp = dsa_slave_to_port(dev);
1094 struct dsa_switch *ds = dp->ds;
1096 if (!ds->ops->set_rxnfc)
1099 return ds->ops->set_rxnfc(ds, dp->index, nfc);
1102 static int dsa_slave_get_ts_info(struct net_device *dev,
1103 struct ethtool_ts_info *ts)
1105 struct dsa_slave_priv *p = netdev_priv(dev);
1106 struct dsa_switch *ds = p->dp->ds;
1108 if (!ds->ops->get_ts_info)
1111 return ds->ops->get_ts_info(ds, p->dp->index, ts);
1114 static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
1117 struct dsa_port *dp = dsa_slave_to_port(dev);
1118 struct bridge_vlan_info info;
1121 /* Check for a possible bridge VLAN entry now since there is no
1122 * need to emulate the switchdev prepare + commit phase.
1124 if (dp->bridge_dev) {
1125 if (!br_vlan_enabled(dp->bridge_dev))
1128 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
1129 * device, respectively the VID is not found, returning
1130 * 0 means success, which is a failure for us here.
1132 ret = br_vlan_get_info(dp->bridge_dev, vid, &info);
1137 ret = dsa_port_vid_add(dp, vid, 0);
1141 ret = dsa_port_vid_add(dp->cpu_dp, vid, 0);
1148 static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
1151 struct dsa_port *dp = dsa_slave_to_port(dev);
1152 struct bridge_vlan_info info;
1155 /* Check for a possible bridge VLAN entry now since there is no
1156 * need to emulate the switchdev prepare + commit phase.
1158 if (dp->bridge_dev) {
1159 if (!br_vlan_enabled(dp->bridge_dev))
1162 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
1163 * device, respectively the VID is not found, returning
1164 * 0 means success, which is a failure for us here.
1166 ret = br_vlan_get_info(dp->bridge_dev, vid, &info);
1171 /* Do not deprogram the CPU port as it may be shared with other user
1172 * ports which can be members of this VLAN as well.
1174 return dsa_port_vid_del(dp, vid);
1177 static const struct ethtool_ops dsa_slave_ethtool_ops = {
1178 .get_drvinfo = dsa_slave_get_drvinfo,
1179 .get_regs_len = dsa_slave_get_regs_len,
1180 .get_regs = dsa_slave_get_regs,
1181 .nway_reset = dsa_slave_nway_reset,
1182 .get_link = ethtool_op_get_link,
1183 .get_eeprom_len = dsa_slave_get_eeprom_len,
1184 .get_eeprom = dsa_slave_get_eeprom,
1185 .set_eeprom = dsa_slave_set_eeprom,
1186 .get_strings = dsa_slave_get_strings,
1187 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
1188 .get_sset_count = dsa_slave_get_sset_count,
1189 .set_wol = dsa_slave_set_wol,
1190 .get_wol = dsa_slave_get_wol,
1191 .set_eee = dsa_slave_set_eee,
1192 .get_eee = dsa_slave_get_eee,
1193 .get_link_ksettings = dsa_slave_get_link_ksettings,
1194 .set_link_ksettings = dsa_slave_set_link_ksettings,
1195 .get_rxnfc = dsa_slave_get_rxnfc,
1196 .set_rxnfc = dsa_slave_set_rxnfc,
1197 .get_ts_info = dsa_slave_get_ts_info,
1200 /* legacy way, bypassing the bridge *****************************************/
1201 int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
1202 struct net_device *dev,
1203 const unsigned char *addr, u16 vid,
1205 struct netlink_ext_ack *extack)
1207 struct dsa_port *dp = dsa_slave_to_port(dev);
1209 return dsa_port_fdb_add(dp, addr, vid);
1212 int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
1213 struct net_device *dev,
1214 const unsigned char *addr, u16 vid)
1216 struct dsa_port *dp = dsa_slave_to_port(dev);
1218 return dsa_port_fdb_del(dp, addr, vid);
1221 static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
1223 struct dsa_port *dp = dsa_slave_to_port(dev);
1225 return dp->ds->devlink ? &dp->devlink_port : NULL;
1228 static const struct net_device_ops dsa_slave_netdev_ops = {
1229 .ndo_open = dsa_slave_open,
1230 .ndo_stop = dsa_slave_close,
1231 .ndo_start_xmit = dsa_slave_xmit,
1232 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
1233 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
1234 .ndo_set_mac_address = dsa_slave_set_mac_address,
1235 .ndo_fdb_add = dsa_legacy_fdb_add,
1236 .ndo_fdb_del = dsa_legacy_fdb_del,
1237 .ndo_fdb_dump = dsa_slave_fdb_dump,
1238 .ndo_do_ioctl = dsa_slave_ioctl,
1239 .ndo_get_iflink = dsa_slave_get_iflink,
1240 #ifdef CONFIG_NET_POLL_CONTROLLER
1241 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
1242 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
1243 .ndo_poll_controller = dsa_slave_poll_controller,
1245 .ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
1246 .ndo_setup_tc = dsa_slave_setup_tc,
1247 .ndo_get_stats64 = dsa_slave_get_stats64,
1248 .ndo_get_port_parent_id = dsa_slave_get_port_parent_id,
1249 .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
1250 .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
1251 .ndo_get_devlink_port = dsa_slave_get_devlink_port,
1254 static struct device_type dsa_type = {
1258 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up)
1260 const struct dsa_port *dp = dsa_to_port(ds, port);
1262 phylink_mac_change(dp->pl, up);
1264 EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change);
1266 static void dsa_slave_phylink_fixed_state(struct net_device *dev,
1267 struct phylink_link_state *state)
1269 struct dsa_port *dp = dsa_slave_to_port(dev);
1270 struct dsa_switch *ds = dp->ds;
1272 /* No need to check that this operation is valid, the callback would
1273 * not be called if it was not.
1275 ds->ops->phylink_fixed_state(ds, dp->index, state);
1278 /* slave device setup *******************************************************/
1279 static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr)
1281 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1282 struct dsa_switch *ds = dp->ds;
1284 slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr);
1285 if (!slave_dev->phydev) {
1286 netdev_err(slave_dev, "no phy at %d\n", addr);
1290 return phylink_connect_phy(dp->pl, slave_dev->phydev);
1293 static int dsa_slave_phy_setup(struct net_device *slave_dev)
1295 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1296 struct device_node *port_dn = dp->dn;
1297 struct dsa_switch *ds = dp->ds;
1301 mode = of_get_phy_mode(port_dn);
1303 mode = PHY_INTERFACE_MODE_NA;
1305 dp->pl_config.dev = &slave_dev->dev;
1306 dp->pl_config.type = PHYLINK_NETDEV;
1308 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode,
1309 &dsa_port_phylink_mac_ops);
1310 if (IS_ERR(dp->pl)) {
1311 netdev_err(slave_dev,
1312 "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
1313 return PTR_ERR(dp->pl);
1316 /* Register only if the switch provides such a callback, since this
1317 * callback takes precedence over polling the link GPIO in PHYLINK
1318 * (see phylink_get_fixed_state).
1320 if (ds->ops->phylink_fixed_state)
1321 phylink_fixed_state_cb(dp->pl, dsa_slave_phylink_fixed_state);
1323 if (ds->ops->get_phy_flags)
1324 phy_flags = ds->ops->get_phy_flags(ds, dp->index);
1326 ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags);
1327 if (ret == -ENODEV && ds->slave_mii_bus) {
1328 /* We could not connect to a designated PHY or SFP, so try to
1329 * use the switch internal MDIO bus instead
1331 ret = dsa_slave_phy_connect(slave_dev, dp->index);
1333 netdev_err(slave_dev,
1334 "failed to connect to port %d: %d\n",
1336 phylink_destroy(dp->pl);
1344 int dsa_slave_suspend(struct net_device *slave_dev)
1346 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1348 if (!netif_running(slave_dev))
1351 cancel_work_sync(&dp->xmit_work);
1352 skb_queue_purge(&dp->xmit_queue);
1354 netif_device_detach(slave_dev);
1357 phylink_stop(dp->pl);
1363 int dsa_slave_resume(struct net_device *slave_dev)
1365 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1367 if (!netif_running(slave_dev))
1370 netif_device_attach(slave_dev);
1373 phylink_start(dp->pl);
1379 static void dsa_slave_notify(struct net_device *dev, unsigned long val)
1381 struct net_device *master = dsa_slave_to_master(dev);
1382 struct dsa_port *dp = dsa_slave_to_port(dev);
1383 struct dsa_notifier_register_info rinfo = {
1384 .switch_number = dp->ds->index,
1385 .port_number = dp->index,
1390 call_dsa_notifiers(val, dev, &rinfo.info);
1393 int dsa_slave_create(struct dsa_port *port)
1395 const struct dsa_port *cpu_dp = port->cpu_dp;
1396 struct net_device *master = cpu_dp->master;
1397 struct dsa_switch *ds = port->ds;
1398 const char *name = port->name;
1399 struct net_device *slave_dev;
1400 struct dsa_slave_priv *p;
1403 if (!ds->num_tx_queues)
1404 ds->num_tx_queues = 1;
1406 slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name,
1407 NET_NAME_UNKNOWN, ether_setup,
1408 ds->num_tx_queues, 1);
1409 if (slave_dev == NULL)
1412 slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
1413 if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
1414 slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1415 slave_dev->hw_features |= NETIF_F_HW_TC;
1416 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1417 if (!IS_ERR_OR_NULL(port->mac))
1418 ether_addr_copy(slave_dev->dev_addr, port->mac);
1420 eth_hw_addr_inherit(slave_dev, master);
1421 slave_dev->priv_flags |= IFF_NO_QUEUE;
1422 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1423 slave_dev->min_mtu = 0;
1424 slave_dev->max_mtu = ETH_MAX_MTU;
1425 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1427 SET_NETDEV_DEV(slave_dev, port->ds->dev);
1428 slave_dev->dev.of_node = port->dn;
1429 slave_dev->vlan_features = master->vlan_features;
1431 p = netdev_priv(slave_dev);
1432 p->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
1434 free_netdev(slave_dev);
1438 INIT_LIST_HEAD(&p->mall_tc_list);
1439 INIT_WORK(&port->xmit_work, dsa_port_xmit_work);
1440 skb_queue_head_init(&port->xmit_queue);
1441 p->xmit = cpu_dp->tag_ops->xmit;
1442 port->slave = slave_dev;
1444 netif_carrier_off(slave_dev);
1446 ret = dsa_slave_phy_setup(slave_dev);
1448 netdev_err(master, "error %d setting up slave phy\n", ret);
1452 dsa_slave_notify(slave_dev, DSA_PORT_REGISTER);
1454 ret = register_netdev(slave_dev);
1456 netdev_err(master, "error %d registering interface %s\n",
1457 ret, slave_dev->name);
1465 phylink_disconnect_phy(p->dp->pl);
1467 phylink_destroy(p->dp->pl);
1469 free_percpu(p->stats64);
1470 free_netdev(slave_dev);
1475 void dsa_slave_destroy(struct net_device *slave_dev)
1477 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1478 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1480 netif_carrier_off(slave_dev);
1482 phylink_disconnect_phy(dp->pl);
1485 dsa_slave_notify(slave_dev, DSA_PORT_UNREGISTER);
1486 unregister_netdev(slave_dev);
1487 phylink_destroy(dp->pl);
1488 free_percpu(p->stats64);
1489 free_netdev(slave_dev);
1492 static bool dsa_slave_dev_check(const struct net_device *dev)
1494 return dev->netdev_ops == &dsa_slave_netdev_ops;
1497 static int dsa_slave_changeupper(struct net_device *dev,
1498 struct netdev_notifier_changeupper_info *info)
1500 struct dsa_port *dp = dsa_slave_to_port(dev);
1501 int err = NOTIFY_DONE;
1503 if (netif_is_bridge_master(info->upper_dev)) {
1504 if (info->linking) {
1505 err = dsa_port_bridge_join(dp, info->upper_dev);
1506 err = notifier_from_errno(err);
1508 dsa_port_bridge_leave(dp, info->upper_dev);
1516 static int dsa_slave_upper_vlan_check(struct net_device *dev,
1517 struct netdev_notifier_changeupper_info *
1520 struct netlink_ext_ack *ext_ack;
1521 struct net_device *slave;
1522 struct dsa_port *dp;
1524 ext_ack = netdev_notifier_info_to_extack(&info->info);
1526 if (!is_vlan_dev(dev))
1529 slave = vlan_dev_real_dev(dev);
1530 if (!dsa_slave_dev_check(slave))
1533 dp = dsa_slave_to_port(slave);
1534 if (!dp->bridge_dev)
1537 /* Deny enslaving a VLAN device into a VLAN-aware bridge */
1538 if (br_vlan_enabled(dp->bridge_dev) &&
1539 netif_is_bridge_master(info->upper_dev) && info->linking) {
1540 NL_SET_ERR_MSG_MOD(ext_ack,
1541 "Cannot enslave VLAN device into VLAN aware bridge");
1542 return notifier_from_errno(-EINVAL);
1548 static int dsa_slave_netdevice_event(struct notifier_block *nb,
1549 unsigned long event, void *ptr)
1551 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1553 if (event == NETDEV_CHANGEUPPER) {
1554 if (!dsa_slave_dev_check(dev))
1555 return dsa_slave_upper_vlan_check(dev, ptr);
1557 return dsa_slave_changeupper(dev, ptr);
1563 struct dsa_switchdev_event_work {
1564 struct work_struct work;
1565 struct switchdev_notifier_fdb_info fdb_info;
1566 struct net_device *dev;
1567 unsigned long event;
1570 static void dsa_slave_switchdev_event_work(struct work_struct *work)
1572 struct dsa_switchdev_event_work *switchdev_work =
1573 container_of(work, struct dsa_switchdev_event_work, work);
1574 struct net_device *dev = switchdev_work->dev;
1575 struct switchdev_notifier_fdb_info *fdb_info;
1576 struct dsa_port *dp = dsa_slave_to_port(dev);
1580 switch (switchdev_work->event) {
1581 case SWITCHDEV_FDB_ADD_TO_DEVICE:
1582 fdb_info = &switchdev_work->fdb_info;
1583 if (!fdb_info->added_by_user)
1586 err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
1588 netdev_dbg(dev, "fdb add failed err=%d\n", err);
1591 fdb_info->offloaded = true;
1592 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
1593 &fdb_info->info, NULL);
1596 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1597 fdb_info = &switchdev_work->fdb_info;
1598 if (!fdb_info->added_by_user)
1601 err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid);
1603 netdev_dbg(dev, "fdb del failed err=%d\n", err);
1610 kfree(switchdev_work->fdb_info.addr);
1611 kfree(switchdev_work);
1616 dsa_slave_switchdev_fdb_work_init(struct dsa_switchdev_event_work *
1618 const struct switchdev_notifier_fdb_info *
1621 memcpy(&switchdev_work->fdb_info, fdb_info,
1622 sizeof(switchdev_work->fdb_info));
1623 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);
1624 if (!switchdev_work->fdb_info.addr)
1626 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr,
1631 /* Called under rcu_read_lock() */
1632 static int dsa_slave_switchdev_event(struct notifier_block *unused,
1633 unsigned long event, void *ptr)
1635 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1636 struct dsa_switchdev_event_work *switchdev_work;
1639 if (event == SWITCHDEV_PORT_ATTR_SET) {
1640 err = switchdev_handle_port_attr_set(dev, ptr,
1641 dsa_slave_dev_check,
1642 dsa_slave_port_attr_set);
1643 return notifier_from_errno(err);
1646 if (!dsa_slave_dev_check(dev))
1649 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
1650 if (!switchdev_work)
1653 INIT_WORK(&switchdev_work->work,
1654 dsa_slave_switchdev_event_work);
1655 switchdev_work->dev = dev;
1656 switchdev_work->event = event;
1659 case SWITCHDEV_FDB_ADD_TO_DEVICE: /* fall through */
1660 case SWITCHDEV_FDB_DEL_TO_DEVICE:
1661 if (dsa_slave_switchdev_fdb_work_init(switchdev_work, ptr))
1662 goto err_fdb_work_init;
1666 kfree(switchdev_work);
1670 dsa_schedule_work(&switchdev_work->work);
1674 kfree(switchdev_work);
1678 static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
1679 unsigned long event, void *ptr)
1681 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1685 case SWITCHDEV_PORT_OBJ_ADD:
1686 err = switchdev_handle_port_obj_add(dev, ptr,
1687 dsa_slave_dev_check,
1688 dsa_slave_port_obj_add);
1689 return notifier_from_errno(err);
1690 case SWITCHDEV_PORT_OBJ_DEL:
1691 err = switchdev_handle_port_obj_del(dev, ptr,
1692 dsa_slave_dev_check,
1693 dsa_slave_port_obj_del);
1694 return notifier_from_errno(err);
1695 case SWITCHDEV_PORT_ATTR_SET:
1696 err = switchdev_handle_port_attr_set(dev, ptr,
1697 dsa_slave_dev_check,
1698 dsa_slave_port_attr_set);
1699 return notifier_from_errno(err);
1705 static struct notifier_block dsa_slave_nb __read_mostly = {
1706 .notifier_call = dsa_slave_netdevice_event,
1709 static struct notifier_block dsa_slave_switchdev_notifier = {
1710 .notifier_call = dsa_slave_switchdev_event,
1713 static struct notifier_block dsa_slave_switchdev_blocking_notifier = {
1714 .notifier_call = dsa_slave_switchdev_blocking_event,
1717 int dsa_slave_register_notifier(void)
1719 struct notifier_block *nb;
1722 err = register_netdevice_notifier(&dsa_slave_nb);
1726 err = register_switchdev_notifier(&dsa_slave_switchdev_notifier);
1728 goto err_switchdev_nb;
1730 nb = &dsa_slave_switchdev_blocking_notifier;
1731 err = register_switchdev_blocking_notifier(nb);
1733 goto err_switchdev_blocking_nb;
1737 err_switchdev_blocking_nb:
1738 unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
1740 unregister_netdevice_notifier(&dsa_slave_nb);
1744 void dsa_slave_unregister_notifier(void)
1746 struct notifier_block *nb;
1749 nb = &dsa_slave_switchdev_blocking_notifier;
1750 err = unregister_switchdev_blocking_notifier(nb);
1752 pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err);
1754 err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
1756 pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err);
1758 err = unregister_netdevice_notifier(&dsa_slave_nb);
1760 pr_err("DSA: failed to unregister slave notifier (%d)\n", err);