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/selftests.h>
19 #include <net/tc_act/tc_mirred.h>
20 #include <linux/if_bridge.h>
21 #include <linux/if_hsr.h>
22 #include <linux/netpoll.h>
26 /* slave mii_bus handling ***************************************************/
27 static int dsa_slave_phy_read(struct mii_bus *bus, int addr, int reg)
29 struct dsa_switch *ds = bus->priv;
31 if (ds->phys_mii_mask & (1 << addr))
32 return ds->ops->phy_read(ds, addr, reg);
37 static int dsa_slave_phy_write(struct mii_bus *bus, int addr, int reg, u16 val)
39 struct dsa_switch *ds = bus->priv;
41 if (ds->phys_mii_mask & (1 << addr))
42 return ds->ops->phy_write(ds, addr, reg, val);
47 void dsa_slave_mii_bus_init(struct dsa_switch *ds)
49 ds->slave_mii_bus->priv = (void *)ds;
50 ds->slave_mii_bus->name = "dsa slave smi";
51 ds->slave_mii_bus->read = dsa_slave_phy_read;
52 ds->slave_mii_bus->write = dsa_slave_phy_write;
53 snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "dsa-%d.%d",
54 ds->dst->index, ds->index);
55 ds->slave_mii_bus->parent = ds->dev;
56 ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;
60 /* slave device handling ****************************************************/
61 static int dsa_slave_get_iflink(const struct net_device *dev)
63 return dsa_slave_to_master(dev)->ifindex;
66 static int dsa_slave_open(struct net_device *dev)
68 struct net_device *master = dsa_slave_to_master(dev);
69 struct dsa_port *dp = dsa_slave_to_port(dev);
72 err = dev_open(master, NULL);
74 netdev_err(dev, "failed to open master %s\n", master->name);
78 if (!ether_addr_equal(dev->dev_addr, master->dev_addr)) {
79 err = dev_uc_add(master, dev->dev_addr);
84 if (dev->flags & IFF_ALLMULTI) {
85 err = dev_set_allmulti(master, 1);
89 if (dev->flags & IFF_PROMISC) {
90 err = dev_set_promiscuity(master, 1);
95 err = dsa_port_enable_rt(dp, dev->phydev);
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 dsa_port_disable_rt(dp);
121 dev_mc_unsync(master, dev);
122 dev_uc_unsync(master, dev);
123 if (dev->flags & IFF_ALLMULTI)
124 dev_set_allmulti(master, -1);
125 if (dev->flags & IFF_PROMISC)
126 dev_set_promiscuity(master, -1);
128 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
129 dev_uc_del(master, dev->dev_addr);
134 static void dsa_slave_change_rx_flags(struct net_device *dev, int change)
136 struct net_device *master = dsa_slave_to_master(dev);
137 if (dev->flags & IFF_UP) {
138 if (change & IFF_ALLMULTI)
139 dev_set_allmulti(master,
140 dev->flags & IFF_ALLMULTI ? 1 : -1);
141 if (change & IFF_PROMISC)
142 dev_set_promiscuity(master,
143 dev->flags & IFF_PROMISC ? 1 : -1);
147 static void dsa_slave_set_rx_mode(struct net_device *dev)
149 struct net_device *master = dsa_slave_to_master(dev);
151 dev_mc_sync(master, dev);
152 dev_uc_sync(master, dev);
155 static int dsa_slave_set_mac_address(struct net_device *dev, void *a)
157 struct net_device *master = dsa_slave_to_master(dev);
158 struct sockaddr *addr = a;
161 if (!is_valid_ether_addr(addr->sa_data))
162 return -EADDRNOTAVAIL;
164 if (!(dev->flags & IFF_UP))
167 if (!ether_addr_equal(addr->sa_data, master->dev_addr)) {
168 err = dev_uc_add(master, addr->sa_data);
173 if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
174 dev_uc_del(master, dev->dev_addr);
177 ether_addr_copy(dev->dev_addr, addr->sa_data);
182 struct dsa_slave_dump_ctx {
183 struct net_device *dev;
185 struct netlink_callback *cb;
190 dsa_slave_port_fdb_do_dump(const unsigned char *addr, u16 vid,
191 bool is_static, void *data)
193 struct dsa_slave_dump_ctx *dump = data;
194 u32 portid = NETLINK_CB(dump->cb->skb).portid;
195 u32 seq = dump->cb->nlh->nlmsg_seq;
196 struct nlmsghdr *nlh;
199 if (dump->idx < dump->cb->args[2])
202 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
203 sizeof(*ndm), NLM_F_MULTI);
207 ndm = nlmsg_data(nlh);
208 ndm->ndm_family = AF_BRIDGE;
211 ndm->ndm_flags = NTF_SELF;
213 ndm->ndm_ifindex = dump->dev->ifindex;
214 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
216 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
217 goto nla_put_failure;
219 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
220 goto nla_put_failure;
222 nlmsg_end(dump->skb, nlh);
229 nlmsg_cancel(dump->skb, nlh);
234 dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
235 struct net_device *dev, struct net_device *filter_dev,
238 struct dsa_port *dp = dsa_slave_to_port(dev);
239 struct dsa_slave_dump_ctx dump = {
247 err = dsa_port_fdb_dump(dp, dsa_slave_port_fdb_do_dump, &dump);
253 static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
255 struct dsa_slave_priv *p = netdev_priv(dev);
256 struct dsa_switch *ds = p->dp->ds;
257 int port = p->dp->index;
259 /* Pass through to switch driver if it supports timestamping */
262 if (ds->ops->port_hwtstamp_get)
263 return ds->ops->port_hwtstamp_get(ds, port, ifr);
266 if (ds->ops->port_hwtstamp_set)
267 return ds->ops->port_hwtstamp_set(ds, port, ifr);
271 return phylink_mii_ioctl(p->dp->pl, ifr, cmd);
274 static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx,
275 const struct switchdev_attr *attr,
276 struct netlink_ext_ack *extack)
278 struct dsa_port *dp = dsa_slave_to_port(dev);
281 if (ctx && ctx != dp)
285 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
286 if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev))
289 ret = dsa_port_set_state(dp, attr->u.stp_state);
291 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
292 if (!dsa_port_offloads_bridge(dp, attr->orig_dev))
295 ret = dsa_port_vlan_filtering(dp, attr->u.vlan_filtering,
298 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
299 if (!dsa_port_offloads_bridge(dp, attr->orig_dev))
302 ret = dsa_port_ageing_time(dp, attr->u.ageing_time);
304 case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
305 if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev))
308 ret = dsa_port_pre_bridge_flags(dp, attr->u.brport_flags,
311 case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
312 if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev))
315 ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, extack);
317 case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER:
318 if (!dsa_port_offloads_bridge(dp, attr->orig_dev))
321 ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, extack);
331 /* Must be called under rcu_read_lock() */
333 dsa_slave_vlan_check_for_8021q_uppers(struct net_device *slave,
334 const struct switchdev_obj_port_vlan *vlan)
336 struct net_device *upper_dev;
337 struct list_head *iter;
339 netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
342 if (!is_vlan_dev(upper_dev))
345 vid = vlan_dev_vlan_id(upper_dev);
346 if (vid == vlan->vid)
353 static int dsa_slave_vlan_add(struct net_device *dev,
354 const struct switchdev_obj *obj,
355 struct netlink_ext_ack *extack)
357 struct net_device *master = dsa_slave_to_master(dev);
358 struct dsa_port *dp = dsa_slave_to_port(dev);
359 struct switchdev_obj_port_vlan vlan;
362 if (dsa_port_skip_vlan_configuration(dp)) {
363 NL_SET_ERR_MSG_MOD(extack, "skipping configuration of VLAN");
367 vlan = *SWITCHDEV_OBJ_PORT_VLAN(obj);
369 /* Deny adding a bridge VLAN when there is already an 802.1Q upper with
372 if (br_vlan_enabled(dp->bridge_dev)) {
374 err = dsa_slave_vlan_check_for_8021q_uppers(dev, &vlan);
377 NL_SET_ERR_MSG_MOD(extack,
378 "Port already has a VLAN upper with this VID");
383 err = dsa_port_vlan_add(dp, &vlan, extack);
387 /* We need the dedicated CPU port to be a member of the VLAN as well.
388 * Even though drivers often handle CPU membership in special ways,
389 * it doesn't make sense to program a PVID, so clear this flag.
391 vlan.flags &= ~BRIDGE_VLAN_INFO_PVID;
393 err = dsa_port_vlan_add(dp->cpu_dp, &vlan, extack);
397 return vlan_vid_add(master, htons(ETH_P_8021Q), vlan.vid);
400 static int dsa_slave_port_obj_add(struct net_device *dev, const void *ctx,
401 const struct switchdev_obj *obj,
402 struct netlink_ext_ack *extack)
404 struct dsa_port *dp = dsa_slave_to_port(dev);
407 if (ctx && ctx != dp)
411 case SWITCHDEV_OBJ_ID_PORT_MDB:
412 if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
415 err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
417 case SWITCHDEV_OBJ_ID_HOST_MDB:
418 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
421 err = dsa_port_host_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
423 case SWITCHDEV_OBJ_ID_PORT_VLAN:
424 if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
427 err = dsa_slave_vlan_add(dev, obj, extack);
429 case SWITCHDEV_OBJ_ID_MRP:
430 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
433 err = dsa_port_mrp_add(dp, SWITCHDEV_OBJ_MRP(obj));
435 case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
436 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
439 err = dsa_port_mrp_add_ring_role(dp,
440 SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
450 static int dsa_slave_vlan_del(struct net_device *dev,
451 const struct switchdev_obj *obj)
453 struct net_device *master = dsa_slave_to_master(dev);
454 struct dsa_port *dp = dsa_slave_to_port(dev);
455 struct switchdev_obj_port_vlan *vlan;
458 if (dsa_port_skip_vlan_configuration(dp))
461 vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
463 /* Do not deprogram the CPU port as it may be shared with other user
464 * ports which can be members of this VLAN as well.
466 err = dsa_port_vlan_del(dp, vlan);
470 vlan_vid_del(master, htons(ETH_P_8021Q), vlan->vid);
475 static int dsa_slave_port_obj_del(struct net_device *dev, const void *ctx,
476 const struct switchdev_obj *obj)
478 struct dsa_port *dp = dsa_slave_to_port(dev);
481 if (ctx && ctx != dp)
485 case SWITCHDEV_OBJ_ID_PORT_MDB:
486 if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
489 err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
491 case SWITCHDEV_OBJ_ID_HOST_MDB:
492 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
495 err = dsa_port_host_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj));
497 case SWITCHDEV_OBJ_ID_PORT_VLAN:
498 if (!dsa_port_offloads_bridge_port(dp, obj->orig_dev))
501 err = dsa_slave_vlan_del(dev, obj);
503 case SWITCHDEV_OBJ_ID_MRP:
504 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
507 err = dsa_port_mrp_del(dp, SWITCHDEV_OBJ_MRP(obj));
509 case SWITCHDEV_OBJ_ID_RING_ROLE_MRP:
510 if (!dsa_port_offloads_bridge(dp, obj->orig_dev))
513 err = dsa_port_mrp_del_ring_role(dp,
514 SWITCHDEV_OBJ_RING_ROLE_MRP(obj));
524 static int dsa_slave_get_port_parent_id(struct net_device *dev,
525 struct netdev_phys_item_id *ppid)
527 struct dsa_port *dp = dsa_slave_to_port(dev);
528 struct dsa_switch *ds = dp->ds;
529 struct dsa_switch_tree *dst = ds->dst;
531 /* For non-legacy ports, devlink is used and it takes
532 * care of the name generation. This ndo implementation
533 * should be removed with legacy support.
538 ppid->id_len = sizeof(dst->index);
539 memcpy(&ppid->id, &dst->index, ppid->id_len);
544 static inline netdev_tx_t dsa_slave_netpoll_send_skb(struct net_device *dev,
547 #ifdef CONFIG_NET_POLL_CONTROLLER
548 struct dsa_slave_priv *p = netdev_priv(dev);
550 return netpoll_send_skb(p->netpoll, skb);
557 static void dsa_skb_tx_timestamp(struct dsa_slave_priv *p,
560 struct dsa_switch *ds = p->dp->ds;
562 if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
565 if (!ds->ops->port_txtstamp)
568 ds->ops->port_txtstamp(ds, p->dp->index, skb);
571 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev)
573 /* SKB for netpoll still need to be mangled with the protocol-specific
574 * tag to be successfully transmitted
576 if (unlikely(netpoll_tx_running(dev)))
577 return dsa_slave_netpoll_send_skb(dev, skb);
579 /* Queue the SKB for transmission on the parent interface, but
580 * do not modify its EtherType
582 skb->dev = dsa_slave_to_master(dev);
587 EXPORT_SYMBOL_GPL(dsa_enqueue_skb);
589 static int dsa_realloc_skb(struct sk_buff *skb, struct net_device *dev)
591 int needed_headroom = dev->needed_headroom;
592 int needed_tailroom = dev->needed_tailroom;
594 /* For tail taggers, we need to pad short frames ourselves, to ensure
595 * that the tail tag does not fail at its role of being at the end of
596 * the packet, once the master interface pads the frame. Account for
597 * that pad length here, and pad later.
599 if (unlikely(needed_tailroom && skb->len < ETH_ZLEN))
600 needed_tailroom += ETH_ZLEN - skb->len;
601 /* skb_headroom() returns unsigned int... */
602 needed_headroom = max_t(int, needed_headroom - skb_headroom(skb), 0);
603 needed_tailroom = max_t(int, needed_tailroom - skb_tailroom(skb), 0);
605 if (likely(!needed_headroom && !needed_tailroom && !skb_cloned(skb)))
606 /* No reallocation needed, yay! */
609 return pskb_expand_head(skb, needed_headroom, needed_tailroom,
613 static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
615 struct dsa_slave_priv *p = netdev_priv(dev);
616 struct sk_buff *nskb;
618 dev_sw_netstats_tx_add(dev, 1, skb->len);
620 memset(skb->cb, 0, sizeof(skb->cb));
622 /* Handle tx timestamp if any */
623 dsa_skb_tx_timestamp(p, skb);
625 if (dsa_realloc_skb(skb, dev)) {
626 dev_kfree_skb_any(skb);
630 /* needed_tailroom should still be 'warm' in the cache line from
631 * dsa_realloc_skb(), which has also ensured that padding is safe.
633 if (dev->needed_tailroom)
636 /* Transmit function may have to reallocate the original SKB,
637 * in which case it must have freed it. Only free it here on error.
639 nskb = p->xmit(skb, dev);
645 return dsa_enqueue_skb(nskb, dev);
648 /* ethtool operations *******************************************************/
650 static void dsa_slave_get_drvinfo(struct net_device *dev,
651 struct ethtool_drvinfo *drvinfo)
653 strlcpy(drvinfo->driver, "dsa", sizeof(drvinfo->driver));
654 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
655 strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
658 static int dsa_slave_get_regs_len(struct net_device *dev)
660 struct dsa_port *dp = dsa_slave_to_port(dev);
661 struct dsa_switch *ds = dp->ds;
663 if (ds->ops->get_regs_len)
664 return ds->ops->get_regs_len(ds, dp->index);
670 dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p)
672 struct dsa_port *dp = dsa_slave_to_port(dev);
673 struct dsa_switch *ds = dp->ds;
675 if (ds->ops->get_regs)
676 ds->ops->get_regs(ds, dp->index, regs, _p);
679 static int dsa_slave_nway_reset(struct net_device *dev)
681 struct dsa_port *dp = dsa_slave_to_port(dev);
683 return phylink_ethtool_nway_reset(dp->pl);
686 static int dsa_slave_get_eeprom_len(struct net_device *dev)
688 struct dsa_port *dp = dsa_slave_to_port(dev);
689 struct dsa_switch *ds = dp->ds;
691 if (ds->cd && ds->cd->eeprom_len)
692 return ds->cd->eeprom_len;
694 if (ds->ops->get_eeprom_len)
695 return ds->ops->get_eeprom_len(ds);
700 static int dsa_slave_get_eeprom(struct net_device *dev,
701 struct ethtool_eeprom *eeprom, u8 *data)
703 struct dsa_port *dp = dsa_slave_to_port(dev);
704 struct dsa_switch *ds = dp->ds;
706 if (ds->ops->get_eeprom)
707 return ds->ops->get_eeprom(ds, eeprom, data);
712 static int dsa_slave_set_eeprom(struct net_device *dev,
713 struct ethtool_eeprom *eeprom, u8 *data)
715 struct dsa_port *dp = dsa_slave_to_port(dev);
716 struct dsa_switch *ds = dp->ds;
718 if (ds->ops->set_eeprom)
719 return ds->ops->set_eeprom(ds, eeprom, data);
724 static void dsa_slave_get_strings(struct net_device *dev,
725 uint32_t stringset, uint8_t *data)
727 struct dsa_port *dp = dsa_slave_to_port(dev);
728 struct dsa_switch *ds = dp->ds;
730 if (stringset == ETH_SS_STATS) {
731 int len = ETH_GSTRING_LEN;
733 strncpy(data, "tx_packets", len);
734 strncpy(data + len, "tx_bytes", len);
735 strncpy(data + 2 * len, "rx_packets", len);
736 strncpy(data + 3 * len, "rx_bytes", len);
737 if (ds->ops->get_strings)
738 ds->ops->get_strings(ds, dp->index, stringset,
740 } else if (stringset == ETH_SS_TEST) {
741 net_selftest_get_strings(data);
746 static void dsa_slave_get_ethtool_stats(struct net_device *dev,
747 struct ethtool_stats *stats,
750 struct dsa_port *dp = dsa_slave_to_port(dev);
751 struct dsa_switch *ds = dp->ds;
752 struct pcpu_sw_netstats *s;
756 for_each_possible_cpu(i) {
757 u64 tx_packets, tx_bytes, rx_packets, rx_bytes;
759 s = per_cpu_ptr(dev->tstats, i);
761 start = u64_stats_fetch_begin_irq(&s->syncp);
762 tx_packets = s->tx_packets;
763 tx_bytes = s->tx_bytes;
764 rx_packets = s->rx_packets;
765 rx_bytes = s->rx_bytes;
766 } while (u64_stats_fetch_retry_irq(&s->syncp, start));
767 data[0] += tx_packets;
769 data[2] += rx_packets;
772 if (ds->ops->get_ethtool_stats)
773 ds->ops->get_ethtool_stats(ds, dp->index, data + 4);
776 static int dsa_slave_get_sset_count(struct net_device *dev, int sset)
778 struct dsa_port *dp = dsa_slave_to_port(dev);
779 struct dsa_switch *ds = dp->ds;
781 if (sset == ETH_SS_STATS) {
784 if (ds->ops->get_sset_count) {
785 count = ds->ops->get_sset_count(ds, dp->index, sset);
791 } else if (sset == ETH_SS_TEST) {
792 return net_selftest_get_count();
798 static void dsa_slave_net_selftest(struct net_device *ndev,
799 struct ethtool_test *etest, u64 *buf)
801 struct dsa_port *dp = dsa_slave_to_port(ndev);
802 struct dsa_switch *ds = dp->ds;
804 if (ds->ops->self_test) {
805 ds->ops->self_test(ds, dp->index, etest, buf);
809 net_selftest(ndev, etest, buf);
812 static void dsa_slave_get_wol(struct net_device *dev, struct ethtool_wolinfo *w)
814 struct dsa_port *dp = dsa_slave_to_port(dev);
815 struct dsa_switch *ds = dp->ds;
817 phylink_ethtool_get_wol(dp->pl, w);
819 if (ds->ops->get_wol)
820 ds->ops->get_wol(ds, dp->index, w);
823 static int dsa_slave_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
825 struct dsa_port *dp = dsa_slave_to_port(dev);
826 struct dsa_switch *ds = dp->ds;
827 int ret = -EOPNOTSUPP;
829 phylink_ethtool_set_wol(dp->pl, w);
831 if (ds->ops->set_wol)
832 ret = ds->ops->set_wol(ds, dp->index, w);
837 static int dsa_slave_set_eee(struct net_device *dev, struct ethtool_eee *e)
839 struct dsa_port *dp = dsa_slave_to_port(dev);
840 struct dsa_switch *ds = dp->ds;
843 /* Port's PHY and MAC both need to be EEE capable */
844 if (!dev->phydev || !dp->pl)
847 if (!ds->ops->set_mac_eee)
850 ret = ds->ops->set_mac_eee(ds, dp->index, e);
854 return phylink_ethtool_set_eee(dp->pl, e);
857 static int dsa_slave_get_eee(struct net_device *dev, struct ethtool_eee *e)
859 struct dsa_port *dp = dsa_slave_to_port(dev);
860 struct dsa_switch *ds = dp->ds;
863 /* Port's PHY and MAC both need to be EEE capable */
864 if (!dev->phydev || !dp->pl)
867 if (!ds->ops->get_mac_eee)
870 ret = ds->ops->get_mac_eee(ds, dp->index, e);
874 return phylink_ethtool_get_eee(dp->pl, e);
877 static int dsa_slave_get_link_ksettings(struct net_device *dev,
878 struct ethtool_link_ksettings *cmd)
880 struct dsa_port *dp = dsa_slave_to_port(dev);
882 return phylink_ethtool_ksettings_get(dp->pl, cmd);
885 static int dsa_slave_set_link_ksettings(struct net_device *dev,
886 const struct ethtool_link_ksettings *cmd)
888 struct dsa_port *dp = dsa_slave_to_port(dev);
890 return phylink_ethtool_ksettings_set(dp->pl, cmd);
893 static void dsa_slave_get_pauseparam(struct net_device *dev,
894 struct ethtool_pauseparam *pause)
896 struct dsa_port *dp = dsa_slave_to_port(dev);
898 phylink_ethtool_get_pauseparam(dp->pl, pause);
901 static int dsa_slave_set_pauseparam(struct net_device *dev,
902 struct ethtool_pauseparam *pause)
904 struct dsa_port *dp = dsa_slave_to_port(dev);
906 return phylink_ethtool_set_pauseparam(dp->pl, pause);
909 #ifdef CONFIG_NET_POLL_CONTROLLER
910 static int dsa_slave_netpoll_setup(struct net_device *dev,
911 struct netpoll_info *ni)
913 struct net_device *master = dsa_slave_to_master(dev);
914 struct dsa_slave_priv *p = netdev_priv(dev);
915 struct netpoll *netpoll;
918 netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL);
922 err = __netpoll_setup(netpoll, master);
928 p->netpoll = netpoll;
933 static void dsa_slave_netpoll_cleanup(struct net_device *dev)
935 struct dsa_slave_priv *p = netdev_priv(dev);
936 struct netpoll *netpoll = p->netpoll;
943 __netpoll_free(netpoll);
946 static void dsa_slave_poll_controller(struct net_device *dev)
951 static int dsa_slave_get_phys_port_name(struct net_device *dev,
952 char *name, size_t len)
954 struct dsa_port *dp = dsa_slave_to_port(dev);
956 /* For non-legacy ports, devlink is used and it takes
957 * care of the name generation. This ndo implementation
958 * should be removed with legacy support.
963 if (snprintf(name, len, "p%d", dp->index) >= len)
969 static struct dsa_mall_tc_entry *
970 dsa_slave_mall_tc_entry_find(struct net_device *dev, unsigned long cookie)
972 struct dsa_slave_priv *p = netdev_priv(dev);
973 struct dsa_mall_tc_entry *mall_tc_entry;
975 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list)
976 if (mall_tc_entry->cookie == cookie)
977 return mall_tc_entry;
983 dsa_slave_add_cls_matchall_mirred(struct net_device *dev,
984 struct tc_cls_matchall_offload *cls,
987 struct dsa_port *dp = dsa_slave_to_port(dev);
988 struct dsa_slave_priv *p = netdev_priv(dev);
989 struct dsa_mall_mirror_tc_entry *mirror;
990 struct dsa_mall_tc_entry *mall_tc_entry;
991 struct dsa_switch *ds = dp->ds;
992 struct flow_action_entry *act;
993 struct dsa_port *to_dp;
996 if (!ds->ops->port_mirror_add)
999 if (!flow_action_basic_hw_stats_check(&cls->rule->action,
1000 cls->common.extack))
1003 act = &cls->rule->action.entries[0];
1008 if (!dsa_slave_dev_check(act->dev))
1011 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
1015 mall_tc_entry->cookie = cls->cookie;
1016 mall_tc_entry->type = DSA_PORT_MALL_MIRROR;
1017 mirror = &mall_tc_entry->mirror;
1019 to_dp = dsa_slave_to_port(act->dev);
1021 mirror->to_local_port = to_dp->index;
1022 mirror->ingress = ingress;
1024 err = ds->ops->port_mirror_add(ds, dp->index, mirror, ingress);
1026 kfree(mall_tc_entry);
1030 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
1036 dsa_slave_add_cls_matchall_police(struct net_device *dev,
1037 struct tc_cls_matchall_offload *cls,
1040 struct netlink_ext_ack *extack = cls->common.extack;
1041 struct dsa_port *dp = dsa_slave_to_port(dev);
1042 struct dsa_slave_priv *p = netdev_priv(dev);
1043 struct dsa_mall_policer_tc_entry *policer;
1044 struct dsa_mall_tc_entry *mall_tc_entry;
1045 struct dsa_switch *ds = dp->ds;
1046 struct flow_action_entry *act;
1049 if (!ds->ops->port_policer_add) {
1050 NL_SET_ERR_MSG_MOD(extack,
1051 "Policing offload not implemented");
1056 NL_SET_ERR_MSG_MOD(extack,
1057 "Only supported on ingress qdisc");
1061 if (!flow_action_basic_hw_stats_check(&cls->rule->action,
1062 cls->common.extack))
1065 list_for_each_entry(mall_tc_entry, &p->mall_tc_list, list) {
1066 if (mall_tc_entry->type == DSA_PORT_MALL_POLICER) {
1067 NL_SET_ERR_MSG_MOD(extack,
1068 "Only one port policer allowed");
1073 act = &cls->rule->action.entries[0];
1075 mall_tc_entry = kzalloc(sizeof(*mall_tc_entry), GFP_KERNEL);
1079 mall_tc_entry->cookie = cls->cookie;
1080 mall_tc_entry->type = DSA_PORT_MALL_POLICER;
1081 policer = &mall_tc_entry->policer;
1082 policer->rate_bytes_per_sec = act->police.rate_bytes_ps;
1083 policer->burst = act->police.burst;
1085 err = ds->ops->port_policer_add(ds, dp->index, policer);
1087 kfree(mall_tc_entry);
1091 list_add_tail(&mall_tc_entry->list, &p->mall_tc_list);
1096 static int dsa_slave_add_cls_matchall(struct net_device *dev,
1097 struct tc_cls_matchall_offload *cls,
1100 int err = -EOPNOTSUPP;
1102 if (cls->common.protocol == htons(ETH_P_ALL) &&
1103 flow_offload_has_one_action(&cls->rule->action) &&
1104 cls->rule->action.entries[0].id == FLOW_ACTION_MIRRED)
1105 err = dsa_slave_add_cls_matchall_mirred(dev, cls, ingress);
1106 else if (flow_offload_has_one_action(&cls->rule->action) &&
1107 cls->rule->action.entries[0].id == FLOW_ACTION_POLICE)
1108 err = dsa_slave_add_cls_matchall_police(dev, cls, ingress);
1113 static void dsa_slave_del_cls_matchall(struct net_device *dev,
1114 struct tc_cls_matchall_offload *cls)
1116 struct dsa_port *dp = dsa_slave_to_port(dev);
1117 struct dsa_mall_tc_entry *mall_tc_entry;
1118 struct dsa_switch *ds = dp->ds;
1120 mall_tc_entry = dsa_slave_mall_tc_entry_find(dev, cls->cookie);
1124 list_del(&mall_tc_entry->list);
1126 switch (mall_tc_entry->type) {
1127 case DSA_PORT_MALL_MIRROR:
1128 if (ds->ops->port_mirror_del)
1129 ds->ops->port_mirror_del(ds, dp->index,
1130 &mall_tc_entry->mirror);
1132 case DSA_PORT_MALL_POLICER:
1133 if (ds->ops->port_policer_del)
1134 ds->ops->port_policer_del(ds, dp->index);
1140 kfree(mall_tc_entry);
1143 static int dsa_slave_setup_tc_cls_matchall(struct net_device *dev,
1144 struct tc_cls_matchall_offload *cls,
1147 if (cls->common.chain_index)
1150 switch (cls->command) {
1151 case TC_CLSMATCHALL_REPLACE:
1152 return dsa_slave_add_cls_matchall(dev, cls, ingress);
1153 case TC_CLSMATCHALL_DESTROY:
1154 dsa_slave_del_cls_matchall(dev, cls);
1161 static int dsa_slave_add_cls_flower(struct net_device *dev,
1162 struct flow_cls_offload *cls,
1165 struct dsa_port *dp = dsa_slave_to_port(dev);
1166 struct dsa_switch *ds = dp->ds;
1167 int port = dp->index;
1169 if (!ds->ops->cls_flower_add)
1172 return ds->ops->cls_flower_add(ds, port, cls, ingress);
1175 static int dsa_slave_del_cls_flower(struct net_device *dev,
1176 struct flow_cls_offload *cls,
1179 struct dsa_port *dp = dsa_slave_to_port(dev);
1180 struct dsa_switch *ds = dp->ds;
1181 int port = dp->index;
1183 if (!ds->ops->cls_flower_del)
1186 return ds->ops->cls_flower_del(ds, port, cls, ingress);
1189 static int dsa_slave_stats_cls_flower(struct net_device *dev,
1190 struct flow_cls_offload *cls,
1193 struct dsa_port *dp = dsa_slave_to_port(dev);
1194 struct dsa_switch *ds = dp->ds;
1195 int port = dp->index;
1197 if (!ds->ops->cls_flower_stats)
1200 return ds->ops->cls_flower_stats(ds, port, cls, ingress);
1203 static int dsa_slave_setup_tc_cls_flower(struct net_device *dev,
1204 struct flow_cls_offload *cls,
1207 switch (cls->command) {
1208 case FLOW_CLS_REPLACE:
1209 return dsa_slave_add_cls_flower(dev, cls, ingress);
1210 case FLOW_CLS_DESTROY:
1211 return dsa_slave_del_cls_flower(dev, cls, ingress);
1212 case FLOW_CLS_STATS:
1213 return dsa_slave_stats_cls_flower(dev, cls, ingress);
1219 static int dsa_slave_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
1220 void *cb_priv, bool ingress)
1222 struct net_device *dev = cb_priv;
1224 if (!tc_can_offload(dev))
1228 case TC_SETUP_CLSMATCHALL:
1229 return dsa_slave_setup_tc_cls_matchall(dev, type_data, ingress);
1230 case TC_SETUP_CLSFLOWER:
1231 return dsa_slave_setup_tc_cls_flower(dev, type_data, ingress);
1237 static int dsa_slave_setup_tc_block_cb_ig(enum tc_setup_type type,
1238 void *type_data, void *cb_priv)
1240 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, true);
1243 static int dsa_slave_setup_tc_block_cb_eg(enum tc_setup_type type,
1244 void *type_data, void *cb_priv)
1246 return dsa_slave_setup_tc_block_cb(type, type_data, cb_priv, false);
1249 static LIST_HEAD(dsa_slave_block_cb_list);
1251 static int dsa_slave_setup_tc_block(struct net_device *dev,
1252 struct flow_block_offload *f)
1254 struct flow_block_cb *block_cb;
1255 flow_setup_cb_t *cb;
1257 if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
1258 cb = dsa_slave_setup_tc_block_cb_ig;
1259 else if (f->binder_type == FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS)
1260 cb = dsa_slave_setup_tc_block_cb_eg;
1264 f->driver_block_list = &dsa_slave_block_cb_list;
1266 switch (f->command) {
1267 case FLOW_BLOCK_BIND:
1268 if (flow_block_cb_is_busy(cb, dev, &dsa_slave_block_cb_list))
1271 block_cb = flow_block_cb_alloc(cb, dev, dev, NULL);
1272 if (IS_ERR(block_cb))
1273 return PTR_ERR(block_cb);
1275 flow_block_cb_add(block_cb, f);
1276 list_add_tail(&block_cb->driver_list, &dsa_slave_block_cb_list);
1278 case FLOW_BLOCK_UNBIND:
1279 block_cb = flow_block_cb_lookup(f->block, cb, dev);
1283 flow_block_cb_remove(block_cb, f);
1284 list_del(&block_cb->driver_list);
1291 static int dsa_slave_setup_ft_block(struct dsa_switch *ds, int port,
1294 struct dsa_port *cpu_dp = dsa_to_port(ds, port)->cpu_dp;
1295 struct net_device *master = cpu_dp->master;
1297 if (!master->netdev_ops->ndo_setup_tc)
1300 return master->netdev_ops->ndo_setup_tc(master, TC_SETUP_FT, type_data);
1303 static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
1306 struct dsa_port *dp = dsa_slave_to_port(dev);
1307 struct dsa_switch *ds = dp->ds;
1310 case TC_SETUP_BLOCK:
1311 return dsa_slave_setup_tc_block(dev, type_data);
1313 return dsa_slave_setup_ft_block(ds, dp->index, type_data);
1318 if (!ds->ops->port_setup_tc)
1321 return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
1324 static int dsa_slave_get_rxnfc(struct net_device *dev,
1325 struct ethtool_rxnfc *nfc, u32 *rule_locs)
1327 struct dsa_port *dp = dsa_slave_to_port(dev);
1328 struct dsa_switch *ds = dp->ds;
1330 if (!ds->ops->get_rxnfc)
1333 return ds->ops->get_rxnfc(ds, dp->index, nfc, rule_locs);
1336 static int dsa_slave_set_rxnfc(struct net_device *dev,
1337 struct ethtool_rxnfc *nfc)
1339 struct dsa_port *dp = dsa_slave_to_port(dev);
1340 struct dsa_switch *ds = dp->ds;
1342 if (!ds->ops->set_rxnfc)
1345 return ds->ops->set_rxnfc(ds, dp->index, nfc);
1348 static int dsa_slave_get_ts_info(struct net_device *dev,
1349 struct ethtool_ts_info *ts)
1351 struct dsa_slave_priv *p = netdev_priv(dev);
1352 struct dsa_switch *ds = p->dp->ds;
1354 if (!ds->ops->get_ts_info)
1357 return ds->ops->get_ts_info(ds, p->dp->index, ts);
1360 static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
1363 struct net_device *master = dsa_slave_to_master(dev);
1364 struct dsa_port *dp = dsa_slave_to_port(dev);
1365 struct switchdev_obj_port_vlan vlan = {
1366 .obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
1368 /* This API only allows programming tagged, non-PVID VIDs */
1371 struct netlink_ext_ack extack = {0};
1375 ret = dsa_port_vlan_add(dp, &vlan, &extack);
1378 netdev_err(dev, "%s\n", extack._msg);
1382 /* And CPU port... */
1383 ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &extack);
1386 netdev_err(dev, "CPU port %d: %s\n", dp->cpu_dp->index,
1391 return vlan_vid_add(master, proto, vid);
1394 static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
1397 struct net_device *master = dsa_slave_to_master(dev);
1398 struct dsa_port *dp = dsa_slave_to_port(dev);
1399 struct switchdev_obj_port_vlan vlan = {
1401 /* This API only allows programming tagged, non-PVID VIDs */
1406 /* Do not deprogram the CPU port as it may be shared with other user
1407 * ports which can be members of this VLAN as well.
1409 err = dsa_port_vlan_del(dp, &vlan);
1413 vlan_vid_del(master, proto, vid);
1418 struct dsa_hw_port {
1419 struct list_head list;
1420 struct net_device *dev;
1424 static int dsa_hw_port_list_set_mtu(struct list_head *hw_port_list, int mtu)
1426 const struct dsa_hw_port *p;
1429 list_for_each_entry(p, hw_port_list, list) {
1430 if (p->dev->mtu == mtu)
1433 err = dev_set_mtu(p->dev, mtu);
1441 list_for_each_entry_continue_reverse(p, hw_port_list, list) {
1442 if (p->dev->mtu == p->old_mtu)
1445 if (dev_set_mtu(p->dev, p->old_mtu))
1446 netdev_err(p->dev, "Failed to restore MTU\n");
1452 static void dsa_hw_port_list_free(struct list_head *hw_port_list)
1454 struct dsa_hw_port *p, *n;
1456 list_for_each_entry_safe(p, n, hw_port_list, list)
1460 /* Make the hardware datapath to/from @dev limited to a common MTU */
1461 static void dsa_bridge_mtu_normalization(struct dsa_port *dp)
1463 struct list_head hw_port_list;
1464 struct dsa_switch_tree *dst;
1465 int min_mtu = ETH_MAX_MTU;
1466 struct dsa_port *other_dp;
1469 if (!dp->ds->mtu_enforcement_ingress)
1472 if (!dp->bridge_dev)
1475 INIT_LIST_HEAD(&hw_port_list);
1477 /* Populate the list of ports that are part of the same bridge
1478 * as the newly added/modified port
1480 list_for_each_entry(dst, &dsa_tree_list, list) {
1481 list_for_each_entry(other_dp, &dst->ports, list) {
1482 struct dsa_hw_port *hw_port;
1483 struct net_device *slave;
1485 if (other_dp->type != DSA_PORT_TYPE_USER)
1488 if (other_dp->bridge_dev != dp->bridge_dev)
1491 if (!other_dp->ds->mtu_enforcement_ingress)
1494 slave = other_dp->slave;
1496 if (min_mtu > slave->mtu)
1497 min_mtu = slave->mtu;
1499 hw_port = kzalloc(sizeof(*hw_port), GFP_KERNEL);
1503 hw_port->dev = slave;
1504 hw_port->old_mtu = slave->mtu;
1506 list_add(&hw_port->list, &hw_port_list);
1510 /* Attempt to configure the entire hardware bridge to the newly added
1511 * interface's MTU first, regardless of whether the intention of the
1512 * user was to raise or lower it.
1514 err = dsa_hw_port_list_set_mtu(&hw_port_list, dp->slave->mtu);
1518 /* Clearly that didn't work out so well, so just set the minimum MTU on
1519 * all hardware bridge ports now. If this fails too, then all ports will
1520 * still have their old MTU rolled back anyway.
1522 dsa_hw_port_list_set_mtu(&hw_port_list, min_mtu);
1525 dsa_hw_port_list_free(&hw_port_list);
1528 int dsa_slave_change_mtu(struct net_device *dev, int new_mtu)
1530 struct net_device *master = dsa_slave_to_master(dev);
1531 struct dsa_port *dp = dsa_slave_to_port(dev);
1532 struct dsa_slave_priv *p = netdev_priv(dev);
1533 struct dsa_switch *ds = p->dp->ds;
1534 struct dsa_port *dp_iter;
1535 struct dsa_port *cpu_dp;
1536 int port = p->dp->index;
1537 int largest_mtu = 0;
1544 if (!ds->ops->port_change_mtu)
1547 list_for_each_entry(dp_iter, &ds->dst->ports, list) {
1550 if (!dsa_port_is_user(dp_iter))
1553 /* During probe, this function will be called for each slave
1554 * device, while not all of them have been allocated. That's
1555 * ok, it doesn't change what the maximum is, so ignore it.
1557 if (!dp_iter->slave)
1560 /* Pretend that we already applied the setting, which we
1561 * actually haven't (still haven't done all integrity checks)
1564 slave_mtu = new_mtu;
1566 slave_mtu = dp_iter->slave->mtu;
1568 if (largest_mtu < slave_mtu)
1569 largest_mtu = slave_mtu;
1572 cpu_dp = dsa_to_port(ds, port)->cpu_dp;
1574 mtu_limit = min_t(int, master->max_mtu, dev->max_mtu);
1575 old_master_mtu = master->mtu;
1576 new_master_mtu = largest_mtu + dsa_tag_protocol_overhead(cpu_dp->tag_ops);
1577 if (new_master_mtu > mtu_limit)
1580 /* If the master MTU isn't over limit, there's no need to check the CPU
1581 * MTU, since that surely isn't either.
1583 cpu_mtu = largest_mtu;
1585 /* Start applying stuff */
1586 if (new_master_mtu != old_master_mtu) {
1587 err = dev_set_mtu(master, new_master_mtu);
1589 goto out_master_failed;
1591 /* We only need to propagate the MTU of the CPU port to
1592 * upstream switches, so create a non-targeted notifier which
1593 * updates all switches.
1595 err = dsa_port_mtu_change(cpu_dp, cpu_mtu, false);
1597 goto out_cpu_failed;
1600 err = dsa_port_mtu_change(dp, new_mtu, true);
1602 goto out_port_failed;
1606 dsa_bridge_mtu_normalization(dp);
1611 if (new_master_mtu != old_master_mtu)
1612 dsa_port_mtu_change(cpu_dp, old_master_mtu -
1613 dsa_tag_protocol_overhead(cpu_dp->tag_ops),
1616 if (new_master_mtu != old_master_mtu)
1617 dev_set_mtu(master, old_master_mtu);
1622 static const struct ethtool_ops dsa_slave_ethtool_ops = {
1623 .get_drvinfo = dsa_slave_get_drvinfo,
1624 .get_regs_len = dsa_slave_get_regs_len,
1625 .get_regs = dsa_slave_get_regs,
1626 .nway_reset = dsa_slave_nway_reset,
1627 .get_link = ethtool_op_get_link,
1628 .get_eeprom_len = dsa_slave_get_eeprom_len,
1629 .get_eeprom = dsa_slave_get_eeprom,
1630 .set_eeprom = dsa_slave_set_eeprom,
1631 .get_strings = dsa_slave_get_strings,
1632 .get_ethtool_stats = dsa_slave_get_ethtool_stats,
1633 .get_sset_count = dsa_slave_get_sset_count,
1634 .set_wol = dsa_slave_set_wol,
1635 .get_wol = dsa_slave_get_wol,
1636 .set_eee = dsa_slave_set_eee,
1637 .get_eee = dsa_slave_get_eee,
1638 .get_link_ksettings = dsa_slave_get_link_ksettings,
1639 .set_link_ksettings = dsa_slave_set_link_ksettings,
1640 .get_pauseparam = dsa_slave_get_pauseparam,
1641 .set_pauseparam = dsa_slave_set_pauseparam,
1642 .get_rxnfc = dsa_slave_get_rxnfc,
1643 .set_rxnfc = dsa_slave_set_rxnfc,
1644 .get_ts_info = dsa_slave_get_ts_info,
1645 .self_test = dsa_slave_net_selftest,
1648 static struct devlink_port *dsa_slave_get_devlink_port(struct net_device *dev)
1650 struct dsa_port *dp = dsa_slave_to_port(dev);
1652 return dp->ds->devlink ? &dp->devlink_port : NULL;
1655 static void dsa_slave_get_stats64(struct net_device *dev,
1656 struct rtnl_link_stats64 *s)
1658 struct dsa_port *dp = dsa_slave_to_port(dev);
1659 struct dsa_switch *ds = dp->ds;
1661 if (ds->ops->get_stats64)
1662 ds->ops->get_stats64(ds, dp->index, s);
1664 dev_get_tstats64(dev, s);
1667 static int dsa_slave_fill_forward_path(struct net_device_path_ctx *ctx,
1668 struct net_device_path *path)
1670 struct dsa_port *dp = dsa_slave_to_port(ctx->dev);
1671 struct dsa_port *cpu_dp = dp->cpu_dp;
1673 path->dev = ctx->dev;
1674 path->type = DEV_PATH_DSA;
1675 path->dsa.proto = cpu_dp->tag_ops->proto;
1676 path->dsa.port = dp->index;
1677 ctx->dev = cpu_dp->master;
1682 static const struct net_device_ops dsa_slave_netdev_ops = {
1683 .ndo_open = dsa_slave_open,
1684 .ndo_stop = dsa_slave_close,
1685 .ndo_start_xmit = dsa_slave_xmit,
1686 .ndo_change_rx_flags = dsa_slave_change_rx_flags,
1687 .ndo_set_rx_mode = dsa_slave_set_rx_mode,
1688 .ndo_set_mac_address = dsa_slave_set_mac_address,
1689 .ndo_fdb_dump = dsa_slave_fdb_dump,
1690 .ndo_do_ioctl = dsa_slave_ioctl,
1691 .ndo_get_iflink = dsa_slave_get_iflink,
1692 #ifdef CONFIG_NET_POLL_CONTROLLER
1693 .ndo_netpoll_setup = dsa_slave_netpoll_setup,
1694 .ndo_netpoll_cleanup = dsa_slave_netpoll_cleanup,
1695 .ndo_poll_controller = dsa_slave_poll_controller,
1697 .ndo_get_phys_port_name = dsa_slave_get_phys_port_name,
1698 .ndo_setup_tc = dsa_slave_setup_tc,
1699 .ndo_get_stats64 = dsa_slave_get_stats64,
1700 .ndo_get_port_parent_id = dsa_slave_get_port_parent_id,
1701 .ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
1702 .ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
1703 .ndo_get_devlink_port = dsa_slave_get_devlink_port,
1704 .ndo_change_mtu = dsa_slave_change_mtu,
1705 .ndo_fill_forward_path = dsa_slave_fill_forward_path,
1708 static struct device_type dsa_type = {
1712 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up)
1714 const struct dsa_port *dp = dsa_to_port(ds, port);
1717 phylink_mac_change(dp->pl, up);
1719 EXPORT_SYMBOL_GPL(dsa_port_phylink_mac_change);
1721 static void dsa_slave_phylink_fixed_state(struct phylink_config *config,
1722 struct phylink_link_state *state)
1724 struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
1725 struct dsa_switch *ds = dp->ds;
1727 /* No need to check that this operation is valid, the callback would
1728 * not be called if it was not.
1730 ds->ops->phylink_fixed_state(ds, dp->index, state);
1733 /* slave device setup *******************************************************/
1734 static int dsa_slave_phy_connect(struct net_device *slave_dev, int addr,
1737 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1738 struct dsa_switch *ds = dp->ds;
1740 slave_dev->phydev = mdiobus_get_phy(ds->slave_mii_bus, addr);
1741 if (!slave_dev->phydev) {
1742 netdev_err(slave_dev, "no phy at %d\n", addr);
1746 slave_dev->phydev->dev_flags |= flags;
1748 return phylink_connect_phy(dp->pl, slave_dev->phydev);
1751 static int dsa_slave_phy_setup(struct net_device *slave_dev)
1753 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1754 struct device_node *port_dn = dp->dn;
1755 struct dsa_switch *ds = dp->ds;
1756 phy_interface_t mode;
1760 ret = of_get_phy_mode(port_dn, &mode);
1762 mode = PHY_INTERFACE_MODE_NA;
1764 dp->pl_config.dev = &slave_dev->dev;
1765 dp->pl_config.type = PHYLINK_NETDEV;
1767 /* The get_fixed_state callback takes precedence over polling the
1768 * link GPIO in PHYLINK (see phylink_get_fixed_state). Only set
1769 * this if the switch provides such a callback.
1771 if (ds->ops->phylink_fixed_state) {
1772 dp->pl_config.get_fixed_state = dsa_slave_phylink_fixed_state;
1773 dp->pl_config.poll_fixed_state = true;
1776 dp->pl = phylink_create(&dp->pl_config, of_fwnode_handle(port_dn), mode,
1777 &dsa_port_phylink_mac_ops);
1778 if (IS_ERR(dp->pl)) {
1779 netdev_err(slave_dev,
1780 "error creating PHYLINK: %ld\n", PTR_ERR(dp->pl));
1781 return PTR_ERR(dp->pl);
1784 if (ds->ops->get_phy_flags)
1785 phy_flags = ds->ops->get_phy_flags(ds, dp->index);
1787 ret = phylink_of_phy_connect(dp->pl, port_dn, phy_flags);
1788 if (ret == -ENODEV && ds->slave_mii_bus) {
1789 /* We could not connect to a designated PHY or SFP, so try to
1790 * use the switch internal MDIO bus instead
1792 ret = dsa_slave_phy_connect(slave_dev, dp->index, phy_flags);
1794 netdev_err(slave_dev,
1795 "failed to connect to port %d: %d\n",
1797 phylink_destroy(dp->pl);
1805 void dsa_slave_setup_tagger(struct net_device *slave)
1807 struct dsa_port *dp = dsa_slave_to_port(slave);
1808 struct dsa_slave_priv *p = netdev_priv(slave);
1809 const struct dsa_port *cpu_dp = dp->cpu_dp;
1810 struct net_device *master = cpu_dp->master;
1812 slave->needed_headroom = cpu_dp->tag_ops->needed_headroom;
1813 slave->needed_tailroom = cpu_dp->tag_ops->needed_tailroom;
1814 /* Try to save one extra realloc later in the TX path (in the master)
1815 * by also inheriting the master's needed headroom and tailroom.
1816 * The 8021q driver also does this.
1818 slave->needed_headroom += master->needed_headroom;
1819 slave->needed_tailroom += master->needed_tailroom;
1821 p->xmit = cpu_dp->tag_ops->xmit;
1824 static struct lock_class_key dsa_slave_netdev_xmit_lock_key;
1825 static void dsa_slave_set_lockdep_class_one(struct net_device *dev,
1826 struct netdev_queue *txq,
1829 lockdep_set_class(&txq->_xmit_lock,
1830 &dsa_slave_netdev_xmit_lock_key);
1833 int dsa_slave_suspend(struct net_device *slave_dev)
1835 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1837 if (!netif_running(slave_dev))
1840 netif_device_detach(slave_dev);
1843 phylink_stop(dp->pl);
1849 int dsa_slave_resume(struct net_device *slave_dev)
1851 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1853 if (!netif_running(slave_dev))
1856 netif_device_attach(slave_dev);
1859 phylink_start(dp->pl);
1865 int dsa_slave_create(struct dsa_port *port)
1867 const struct dsa_port *cpu_dp = port->cpu_dp;
1868 struct net_device *master = cpu_dp->master;
1869 struct dsa_switch *ds = port->ds;
1870 const char *name = port->name;
1871 struct net_device *slave_dev;
1872 struct dsa_slave_priv *p;
1875 if (!ds->num_tx_queues)
1876 ds->num_tx_queues = 1;
1878 slave_dev = alloc_netdev_mqs(sizeof(struct dsa_slave_priv), name,
1879 NET_NAME_UNKNOWN, ether_setup,
1880 ds->num_tx_queues, 1);
1881 if (slave_dev == NULL)
1884 slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
1885 if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
1886 slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1887 slave_dev->hw_features |= NETIF_F_HW_TC;
1888 slave_dev->features |= NETIF_F_LLTX;
1889 slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
1890 if (!is_zero_ether_addr(port->mac))
1891 ether_addr_copy(slave_dev->dev_addr, port->mac);
1893 eth_hw_addr_inherit(slave_dev, master);
1894 slave_dev->priv_flags |= IFF_NO_QUEUE;
1895 slave_dev->netdev_ops = &dsa_slave_netdev_ops;
1896 if (ds->ops->port_max_mtu)
1897 slave_dev->max_mtu = ds->ops->port_max_mtu(ds, port->index);
1898 SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
1900 netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
1903 SET_NETDEV_DEV(slave_dev, port->ds->dev);
1904 slave_dev->dev.of_node = port->dn;
1905 slave_dev->vlan_features = master->vlan_features;
1907 p = netdev_priv(slave_dev);
1908 slave_dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
1909 if (!slave_dev->tstats) {
1910 free_netdev(slave_dev);
1914 ret = gro_cells_init(&p->gcells, slave_dev);
1919 INIT_LIST_HEAD(&p->mall_tc_list);
1920 port->slave = slave_dev;
1921 dsa_slave_setup_tagger(slave_dev);
1924 ret = dsa_slave_change_mtu(slave_dev, ETH_DATA_LEN);
1926 if (ret && ret != -EOPNOTSUPP)
1927 dev_warn(ds->dev, "nonfatal error %d setting MTU to %d on port %d\n",
1928 ret, ETH_DATA_LEN, port->index);
1930 netif_carrier_off(slave_dev);
1932 ret = dsa_slave_phy_setup(slave_dev);
1934 netdev_err(slave_dev,
1935 "error %d setting up PHY for tree %d, switch %d, port %d\n",
1936 ret, ds->dst->index, ds->index, port->index);
1942 ret = register_netdevice(slave_dev);
1944 netdev_err(master, "error %d registering interface %s\n",
1945 ret, slave_dev->name);
1950 ret = netdev_upper_dev_link(master, slave_dev, NULL);
1955 goto out_unregister;
1960 unregister_netdev(slave_dev);
1963 phylink_disconnect_phy(p->dp->pl);
1965 phylink_destroy(p->dp->pl);
1967 gro_cells_destroy(&p->gcells);
1969 free_percpu(slave_dev->tstats);
1970 free_netdev(slave_dev);
1975 void dsa_slave_destroy(struct net_device *slave_dev)
1977 struct net_device *master = dsa_slave_to_master(slave_dev);
1978 struct dsa_port *dp = dsa_slave_to_port(slave_dev);
1979 struct dsa_slave_priv *p = netdev_priv(slave_dev);
1981 netif_carrier_off(slave_dev);
1983 netdev_upper_dev_unlink(master, slave_dev);
1984 unregister_netdevice(slave_dev);
1985 phylink_disconnect_phy(dp->pl);
1988 phylink_destroy(dp->pl);
1989 gro_cells_destroy(&p->gcells);
1990 free_percpu(slave_dev->tstats);
1991 free_netdev(slave_dev);
1994 bool dsa_slave_dev_check(const struct net_device *dev)
1996 return dev->netdev_ops == &dsa_slave_netdev_ops;
1998 EXPORT_SYMBOL_GPL(dsa_slave_dev_check);
2000 static int dsa_slave_changeupper(struct net_device *dev,
2001 struct netdev_notifier_changeupper_info *info)
2003 struct dsa_port *dp = dsa_slave_to_port(dev);
2004 struct netlink_ext_ack *extack;
2005 int err = NOTIFY_DONE;
2007 extack = netdev_notifier_info_to_extack(&info->info);
2009 if (netif_is_bridge_master(info->upper_dev)) {
2010 if (info->linking) {
2011 err = dsa_port_bridge_join(dp, info->upper_dev, extack);
2013 dsa_bridge_mtu_normalization(dp);
2014 err = notifier_from_errno(err);
2016 dsa_port_bridge_leave(dp, info->upper_dev);
2019 } else if (netif_is_lag_master(info->upper_dev)) {
2020 if (info->linking) {
2021 err = dsa_port_lag_join(dp, info->upper_dev,
2022 info->upper_info, extack);
2023 if (err == -EOPNOTSUPP) {
2024 NL_SET_ERR_MSG_MOD(info->info.extack,
2025 "Offloading not supported");
2028 err = notifier_from_errno(err);
2030 dsa_port_lag_leave(dp, info->upper_dev);
2033 } else if (is_hsr_master(info->upper_dev)) {
2034 if (info->linking) {
2035 err = dsa_port_hsr_join(dp, info->upper_dev);
2036 if (err == -EOPNOTSUPP) {
2037 NL_SET_ERR_MSG_MOD(info->info.extack,
2038 "Offloading not supported");
2041 err = notifier_from_errno(err);
2043 dsa_port_hsr_leave(dp, info->upper_dev);
2051 static int dsa_slave_prechangeupper(struct net_device *dev,
2052 struct netdev_notifier_changeupper_info *info)
2054 struct dsa_port *dp = dsa_slave_to_port(dev);
2055 struct netlink_ext_ack *extack;
2058 extack = netdev_notifier_info_to_extack(&info->info);
2060 if (netif_is_bridge_master(info->upper_dev) && !info->linking)
2061 err = dsa_port_pre_bridge_leave(dp, info->upper_dev, extack);
2062 else if (netif_is_lag_master(info->upper_dev) && !info->linking)
2063 err = dsa_port_pre_lag_leave(dp, info->upper_dev, extack);
2064 /* dsa_port_pre_hsr_leave is not yet necessary since hsr cannot be
2065 * meaningfully enslaved to a bridge yet
2068 return notifier_from_errno(err);
2072 dsa_slave_lag_changeupper(struct net_device *dev,
2073 struct netdev_notifier_changeupper_info *info)
2075 struct net_device *lower;
2076 struct list_head *iter;
2077 int err = NOTIFY_DONE;
2078 struct dsa_port *dp;
2080 netdev_for_each_lower_dev(dev, lower, iter) {
2081 if (!dsa_slave_dev_check(lower))
2084 dp = dsa_slave_to_port(lower);
2089 err = dsa_slave_changeupper(lower, info);
2090 if (notifier_to_errno(err))
2097 /* Same as dsa_slave_lag_changeupper() except that it calls
2098 * dsa_slave_prechangeupper()
2101 dsa_slave_lag_prechangeupper(struct net_device *dev,
2102 struct netdev_notifier_changeupper_info *info)
2104 struct net_device *lower;
2105 struct list_head *iter;
2106 int err = NOTIFY_DONE;
2107 struct dsa_port *dp;
2109 netdev_for_each_lower_dev(dev, lower, iter) {
2110 if (!dsa_slave_dev_check(lower))
2113 dp = dsa_slave_to_port(lower);
2118 err = dsa_slave_prechangeupper(lower, info);
2119 if (notifier_to_errno(err))
2127 dsa_prevent_bridging_8021q_upper(struct net_device *dev,
2128 struct netdev_notifier_changeupper_info *info)
2130 struct netlink_ext_ack *ext_ack;
2131 struct net_device *slave;
2132 struct dsa_port *dp;
2134 ext_ack = netdev_notifier_info_to_extack(&info->info);
2136 if (!is_vlan_dev(dev))
2139 slave = vlan_dev_real_dev(dev);
2140 if (!dsa_slave_dev_check(slave))
2143 dp = dsa_slave_to_port(slave);
2144 if (!dp->bridge_dev)
2147 /* Deny enslaving a VLAN device into a VLAN-aware bridge */
2148 if (br_vlan_enabled(dp->bridge_dev) &&
2149 netif_is_bridge_master(info->upper_dev) && info->linking) {
2150 NL_SET_ERR_MSG_MOD(ext_ack,
2151 "Cannot enslave VLAN device into VLAN aware bridge");
2152 return notifier_from_errno(-EINVAL);
2159 dsa_slave_check_8021q_upper(struct net_device *dev,
2160 struct netdev_notifier_changeupper_info *info)
2162 struct dsa_port *dp = dsa_slave_to_port(dev);
2163 struct net_device *br = dp->bridge_dev;
2164 struct bridge_vlan_info br_info;
2165 struct netlink_ext_ack *extack;
2166 int err = NOTIFY_DONE;
2169 if (!br || !br_vlan_enabled(br))
2172 extack = netdev_notifier_info_to_extack(&info->info);
2173 vid = vlan_dev_vlan_id(info->upper_dev);
2175 /* br_vlan_get_info() returns -EINVAL or -ENOENT if the
2176 * device, respectively the VID is not found, returning
2177 * 0 means success, which is a failure for us here.
2179 err = br_vlan_get_info(br, vid, &br_info);
2181 NL_SET_ERR_MSG_MOD(extack,
2182 "This VLAN is already configured by the bridge");
2183 return notifier_from_errno(-EBUSY);
2190 dsa_slave_prechangeupper_sanity_check(struct net_device *dev,
2191 struct netdev_notifier_changeupper_info *info)
2193 struct dsa_switch *ds;
2194 struct dsa_port *dp;
2197 if (!dsa_slave_dev_check(dev))
2198 return dsa_prevent_bridging_8021q_upper(dev, info);
2200 dp = dsa_slave_to_port(dev);
2203 if (ds->ops->port_prechangeupper) {
2204 err = ds->ops->port_prechangeupper(ds, dp->index, info);
2206 return notifier_from_errno(err);
2209 if (is_vlan_dev(info->upper_dev))
2210 return dsa_slave_check_8021q_upper(dev, info);
2215 static int dsa_slave_netdevice_event(struct notifier_block *nb,
2216 unsigned long event, void *ptr)
2218 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2221 case NETDEV_PRECHANGEUPPER: {
2222 struct netdev_notifier_changeupper_info *info = ptr;
2225 err = dsa_slave_prechangeupper_sanity_check(dev, info);
2226 if (err != NOTIFY_DONE)
2229 if (dsa_slave_dev_check(dev))
2230 return dsa_slave_prechangeupper(dev, ptr);
2232 if (netif_is_lag_master(dev))
2233 return dsa_slave_lag_prechangeupper(dev, ptr);
2237 case NETDEV_CHANGEUPPER:
2238 if (dsa_slave_dev_check(dev))
2239 return dsa_slave_changeupper(dev, ptr);
2241 if (netif_is_lag_master(dev))
2242 return dsa_slave_lag_changeupper(dev, ptr);
2245 case NETDEV_CHANGELOWERSTATE: {
2246 struct netdev_notifier_changelowerstate_info *info = ptr;
2247 struct dsa_port *dp;
2250 if (!dsa_slave_dev_check(dev))
2253 dp = dsa_slave_to_port(dev);
2255 err = dsa_port_lag_change(dp, info->lower_state_info);
2256 return notifier_from_errno(err);
2258 case NETDEV_GOING_DOWN: {
2259 struct dsa_port *dp, *cpu_dp;
2260 struct dsa_switch_tree *dst;
2261 LIST_HEAD(close_list);
2263 if (!netdev_uses_dsa(dev))
2266 cpu_dp = dev->dsa_ptr;
2267 dst = cpu_dp->ds->dst;
2269 list_for_each_entry(dp, &dst->ports, list) {
2270 if (!dsa_is_user_port(dp->ds, dp->index))
2273 list_add(&dp->slave->close_list, &close_list);
2276 dev_close_many(&close_list, true);
2288 dsa_fdb_offload_notify(struct dsa_switchdev_event_work *switchdev_work)
2290 struct dsa_switch *ds = switchdev_work->ds;
2291 struct switchdev_notifier_fdb_info info;
2292 struct dsa_port *dp;
2294 if (!dsa_is_user_port(ds, switchdev_work->port))
2297 info.addr = switchdev_work->addr;
2298 info.vid = switchdev_work->vid;
2299 info.offloaded = true;
2300 dp = dsa_to_port(ds, switchdev_work->port);
2301 call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED,
2302 dp->slave, &info.info, NULL);
2305 static void dsa_slave_switchdev_event_work(struct work_struct *work)
2307 struct dsa_switchdev_event_work *switchdev_work =
2308 container_of(work, struct dsa_switchdev_event_work, work);
2309 struct dsa_switch *ds = switchdev_work->ds;
2310 struct dsa_port *dp;
2313 dp = dsa_to_port(ds, switchdev_work->port);
2316 switch (switchdev_work->event) {
2317 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2318 if (switchdev_work->host_addr)
2319 err = dsa_port_host_fdb_add(dp, switchdev_work->addr,
2320 switchdev_work->vid);
2322 err = dsa_port_fdb_add(dp, switchdev_work->addr,
2323 switchdev_work->vid);
2326 "port %d failed to add %pM vid %d to fdb: %d\n",
2327 dp->index, switchdev_work->addr,
2328 switchdev_work->vid, err);
2331 dsa_fdb_offload_notify(switchdev_work);
2334 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2335 if (switchdev_work->host_addr)
2336 err = dsa_port_host_fdb_del(dp, switchdev_work->addr,
2337 switchdev_work->vid);
2339 err = dsa_port_fdb_del(dp, switchdev_work->addr,
2340 switchdev_work->vid);
2343 "port %d failed to delete %pM vid %d from fdb: %d\n",
2344 dp->index, switchdev_work->addr,
2345 switchdev_work->vid, err);
2352 dev_put(switchdev_work->dev);
2353 kfree(switchdev_work);
2356 static bool dsa_foreign_dev_check(const struct net_device *dev,
2357 const struct net_device *foreign_dev)
2359 const struct dsa_port *dp = dsa_slave_to_port(dev);
2360 struct dsa_switch_tree *dst = dp->ds->dst;
2362 if (netif_is_bridge_master(foreign_dev))
2363 return !dsa_tree_offloads_bridge(dst, foreign_dev);
2365 if (netif_is_bridge_port(foreign_dev))
2366 return !dsa_tree_offloads_bridge_port(dst, foreign_dev);
2368 /* Everything else is foreign */
2372 static int dsa_slave_fdb_event(struct net_device *dev,
2373 const struct net_device *orig_dev,
2375 const struct switchdev_notifier_fdb_info *fdb_info,
2376 unsigned long event)
2378 struct dsa_switchdev_event_work *switchdev_work;
2379 struct dsa_port *dp = dsa_slave_to_port(dev);
2380 bool host_addr = fdb_info->is_local;
2381 struct dsa_switch *ds = dp->ds;
2383 if (ctx && ctx != dp)
2386 if (!ds->ops->port_fdb_add || !ds->ops->port_fdb_del)
2389 if (dsa_slave_dev_check(orig_dev) &&
2390 switchdev_fdb_is_dynamically_learned(fdb_info))
2393 /* FDB entries learned by the software bridge should be installed as
2394 * host addresses only if the driver requests assisted learning.
2396 if (switchdev_fdb_is_dynamically_learned(fdb_info) &&
2397 !ds->assisted_learning_on_cpu_port)
2400 /* Also treat FDB entries on foreign interfaces bridged with us as host
2403 if (dsa_foreign_dev_check(dev, orig_dev))
2406 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
2407 if (!switchdev_work)
2410 netdev_dbg(dev, "%s FDB entry towards %s, addr %pM vid %d%s\n",
2411 event == SWITCHDEV_FDB_ADD_TO_DEVICE ? "Adding" : "Deleting",
2412 orig_dev->name, fdb_info->addr, fdb_info->vid,
2413 host_addr ? " as host address" : "");
2415 INIT_WORK(&switchdev_work->work, dsa_slave_switchdev_event_work);
2416 switchdev_work->ds = ds;
2417 switchdev_work->port = dp->index;
2418 switchdev_work->event = event;
2419 switchdev_work->dev = dev;
2421 ether_addr_copy(switchdev_work->addr, fdb_info->addr);
2422 switchdev_work->vid = fdb_info->vid;
2423 switchdev_work->host_addr = host_addr;
2425 /* Hold a reference for dsa_fdb_offload_notify */
2427 dsa_schedule_work(&switchdev_work->work);
2433 dsa_slave_fdb_add_to_device(struct net_device *dev,
2434 const struct net_device *orig_dev, const void *ctx,
2435 const struct switchdev_notifier_fdb_info *fdb_info)
2437 return dsa_slave_fdb_event(dev, orig_dev, ctx, fdb_info,
2438 SWITCHDEV_FDB_ADD_TO_DEVICE);
2442 dsa_slave_fdb_del_to_device(struct net_device *dev,
2443 const struct net_device *orig_dev, const void *ctx,
2444 const struct switchdev_notifier_fdb_info *fdb_info)
2446 return dsa_slave_fdb_event(dev, orig_dev, ctx, fdb_info,
2447 SWITCHDEV_FDB_DEL_TO_DEVICE);
2450 /* Called under rcu_read_lock() */
2451 static int dsa_slave_switchdev_event(struct notifier_block *unused,
2452 unsigned long event, void *ptr)
2454 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2458 case SWITCHDEV_PORT_ATTR_SET:
2459 err = switchdev_handle_port_attr_set(dev, ptr,
2460 dsa_slave_dev_check,
2461 dsa_slave_port_attr_set);
2462 return notifier_from_errno(err);
2463 case SWITCHDEV_FDB_ADD_TO_DEVICE:
2464 err = switchdev_handle_fdb_add_to_device(dev, ptr,
2465 dsa_slave_dev_check,
2466 dsa_foreign_dev_check,
2467 dsa_slave_fdb_add_to_device,
2469 return notifier_from_errno(err);
2470 case SWITCHDEV_FDB_DEL_TO_DEVICE:
2471 err = switchdev_handle_fdb_del_to_device(dev, ptr,
2472 dsa_slave_dev_check,
2473 dsa_foreign_dev_check,
2474 dsa_slave_fdb_del_to_device,
2476 return notifier_from_errno(err);
2484 static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
2485 unsigned long event, void *ptr)
2487 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
2491 case SWITCHDEV_PORT_OBJ_ADD:
2492 err = switchdev_handle_port_obj_add(dev, ptr,
2493 dsa_slave_dev_check,
2494 dsa_slave_port_obj_add);
2495 return notifier_from_errno(err);
2496 case SWITCHDEV_PORT_OBJ_DEL:
2497 err = switchdev_handle_port_obj_del(dev, ptr,
2498 dsa_slave_dev_check,
2499 dsa_slave_port_obj_del);
2500 return notifier_from_errno(err);
2501 case SWITCHDEV_PORT_ATTR_SET:
2502 err = switchdev_handle_port_attr_set(dev, ptr,
2503 dsa_slave_dev_check,
2504 dsa_slave_port_attr_set);
2505 return notifier_from_errno(err);
2511 static struct notifier_block dsa_slave_nb __read_mostly = {
2512 .notifier_call = dsa_slave_netdevice_event,
2515 struct notifier_block dsa_slave_switchdev_notifier = {
2516 .notifier_call = dsa_slave_switchdev_event,
2519 struct notifier_block dsa_slave_switchdev_blocking_notifier = {
2520 .notifier_call = dsa_slave_switchdev_blocking_event,
2523 int dsa_slave_register_notifier(void)
2525 struct notifier_block *nb;
2528 err = register_netdevice_notifier(&dsa_slave_nb);
2532 err = register_switchdev_notifier(&dsa_slave_switchdev_notifier);
2534 goto err_switchdev_nb;
2536 nb = &dsa_slave_switchdev_blocking_notifier;
2537 err = register_switchdev_blocking_notifier(nb);
2539 goto err_switchdev_blocking_nb;
2543 err_switchdev_blocking_nb:
2544 unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
2546 unregister_netdevice_notifier(&dsa_slave_nb);
2550 void dsa_slave_unregister_notifier(void)
2552 struct notifier_block *nb;
2555 nb = &dsa_slave_switchdev_blocking_notifier;
2556 err = unregister_switchdev_blocking_notifier(nb);
2558 pr_err("DSA: failed to unregister switchdev blocking notifier (%d)\n", err);
2560 err = unregister_switchdev_notifier(&dsa_slave_switchdev_notifier);
2562 pr_err("DSA: failed to unregister switchdev notifier (%d)\n", err);
2564 err = unregister_netdevice_notifier(&dsa_slave_nb);
2566 pr_err("DSA: failed to unregister slave notifier (%d)\n", err);