1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
4 * Copyright (c) 2008-2009 Marvell Semiconductor
7 #ifndef __LINUX_NET_DSA_H
8 #define __LINUX_NET_DSA_H
11 #include <linux/if_ether.h>
12 #include <linux/list.h>
13 #include <linux/notifier.h>
14 #include <linux/timer.h>
15 #include <linux/workqueue.h>
17 #include <linux/ethtool.h>
18 #include <linux/net_tstamp.h>
19 #include <linux/phy.h>
20 #include <linux/platform_data/dsa.h>
21 #include <linux/phylink.h>
22 #include <net/devlink.h>
23 #include <net/switchdev.h>
27 struct fixed_phy_status;
28 struct phylink_link_state;
30 #define DSA_TAG_PROTO_NONE_VALUE 0
31 #define DSA_TAG_PROTO_BRCM_VALUE 1
32 #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2
33 #define DSA_TAG_PROTO_DSA_VALUE 3
34 #define DSA_TAG_PROTO_EDSA_VALUE 4
35 #define DSA_TAG_PROTO_GSWIP_VALUE 5
36 #define DSA_TAG_PROTO_KSZ9477_VALUE 6
37 #define DSA_TAG_PROTO_KSZ9893_VALUE 7
38 #define DSA_TAG_PROTO_LAN9303_VALUE 8
39 #define DSA_TAG_PROTO_MTK_VALUE 9
40 #define DSA_TAG_PROTO_QCA_VALUE 10
41 #define DSA_TAG_PROTO_TRAILER_VALUE 11
42 #define DSA_TAG_PROTO_8021Q_VALUE 12
43 #define DSA_TAG_PROTO_SJA1105_VALUE 13
44 #define DSA_TAG_PROTO_KSZ8795_VALUE 14
45 #define DSA_TAG_PROTO_OCELOT_VALUE 15
46 #define DSA_TAG_PROTO_AR9331_VALUE 16
47 #define DSA_TAG_PROTO_RTL4_A_VALUE 17
48 #define DSA_TAG_PROTO_HELLCREEK_VALUE 18
49 #define DSA_TAG_PROTO_XRS700X_VALUE 19
50 #define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20
51 #define DSA_TAG_PROTO_SEVILLE_VALUE 21
52 #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22
53 #define DSA_TAG_PROTO_SJA1110_VALUE 23
55 enum dsa_tag_protocol {
56 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
57 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
58 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
59 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
60 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
61 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
62 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
63 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
64 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
65 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
66 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
67 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
68 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
69 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
70 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
71 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
72 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE,
73 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE,
74 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE,
75 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE,
76 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE,
77 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE,
78 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE,
79 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE,
85 struct dsa_device_ops {
86 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
87 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
88 struct packet_type *pt);
89 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
91 /* Used to determine which traffic should match the DSA filter in
92 * eth_type_trans, and which, if any, should bypass it and be processed
93 * as regular on the master net device.
95 bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
96 unsigned int needed_headroom;
97 unsigned int needed_tailroom;
99 enum dsa_tag_protocol proto;
100 /* Some tagging protocols either mangle or shift the destination MAC
101 * address, in which case the DSA master would drop packets on ingress
102 * if what it understands out of the destination MAC address is not in
105 bool promisc_on_master;
108 /* This structure defines the control interfaces that are overlayed by the
109 * DSA layer on top of the DSA CPU/management net_device instance. This is
110 * used by the core net_device layer while calling various net_device_ops
113 struct dsa_netdevice_ops {
114 int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr,
118 #define DSA_TAG_DRIVER_ALIAS "dsa_tag-"
119 #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \
120 MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE))
122 struct dsa_switch_tree {
123 struct list_head list;
125 /* Notifier chain for switch-wide events */
126 struct raw_notifier_head nh;
128 /* Tree identifier */
131 /* Number of switches attached to this tree */
132 struct kref refcount;
134 /* Has this tree been applied to the hardware? */
137 /* Tagging protocol operations */
138 const struct dsa_device_ops *tag_ops;
140 /* Default tagging protocol preferred by the switches in this
143 enum dsa_tag_protocol default_proto;
146 * Configuration data for the platform device that owns
147 * this dsa switch tree instance.
149 struct dsa_platform_data *pd;
151 /* List of switch ports */
152 struct list_head ports;
154 /* List of DSA links composing the routing table */
155 struct list_head rtable;
157 /* Maps offloaded LAG netdevs to a zero-based linear ID for
158 * drivers that need it.
160 struct net_device **lags;
161 unsigned int lags_len;
164 #define dsa_lags_foreach_id(_id, _dst) \
165 for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \
166 if ((_dst)->lags[(_id)])
168 #define dsa_lag_foreach_port(_dp, _dst, _lag) \
169 list_for_each_entry((_dp), &(_dst)->ports, list) \
170 if ((_dp)->lag_dev == (_lag))
172 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \
173 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
174 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr))
176 static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst,
179 return dst->lags[id];
182 static inline int dsa_lag_id(struct dsa_switch_tree *dst,
183 struct net_device *lag)
187 dsa_lags_foreach_id(id, dst) {
188 if (dsa_lag_dev(dst, id) == lag)
195 /* TC matchall action types */
196 enum dsa_port_mall_action_type {
197 DSA_PORT_MALL_MIRROR,
198 DSA_PORT_MALL_POLICER,
201 /* TC mirroring entry */
202 struct dsa_mall_mirror_tc_entry {
207 /* TC port policer entry */
208 struct dsa_mall_policer_tc_entry {
210 u64 rate_bytes_per_sec;
213 /* TC matchall entry */
214 struct dsa_mall_tc_entry {
215 struct list_head list;
216 unsigned long cookie;
217 enum dsa_port_mall_action_type type;
219 struct dsa_mall_mirror_tc_entry mirror;
220 struct dsa_mall_policer_tc_entry policer;
226 /* A CPU port is physically connected to a master device.
227 * A user port exposed to userspace has a slave device.
230 struct net_device *master;
231 struct net_device *slave;
234 /* Copy of the tagging protocol operations, for quicker access
235 * in the data path. Valid only for the CPU ports.
237 const struct dsa_device_ops *tag_ops;
239 /* Copies for faster access in master receive hot path */
240 struct dsa_switch_tree *dst;
241 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
242 struct packet_type *pt);
243 bool (*filter)(const struct sk_buff *skb, struct net_device *dev);
246 DSA_PORT_TYPE_UNUSED = 0,
252 struct dsa_switch *ds;
255 struct dsa_port *cpu_dp;
257 struct device_node *dn;
258 unsigned int ageing_time;
261 struct net_device *bridge_dev;
262 struct devlink_port devlink_port;
263 bool devlink_port_setup;
265 struct phylink_config pl_config;
266 struct net_device *lag_dev;
268 struct net_device *hsr_dev;
270 struct list_head list;
273 * Give the switch driver somewhere to hang its per-port private data
274 * structures (accessible from the tagger).
279 * Original copy of the master netdev ethtool_ops
281 const struct ethtool_ops *orig_ethtool_ops;
284 * Original copy of the master netdev net_device_ops
286 const struct dsa_netdevice_ops *netdev_ops;
288 /* List of MAC addresses that must be forwarded on this port.
289 * These are only valid on CPU ports and DSA links.
291 struct list_head mdbs;
296 /* TODO: ideally DSA ports would have a single dp->link_dp member,
297 * and no dst->rtable nor this struct dsa_link would be needed,
298 * but this would require some more complex tree walking,
299 * so keep it stupid at the moment and list them all.
303 struct dsa_port *link_dp;
304 struct list_head list;
307 struct dsa_mac_addr {
308 unsigned char addr[ETH_ALEN];
311 struct list_head list;
320 * Parent switch tree, and switch index.
322 struct dsa_switch_tree *dst;
325 /* Listener for switch fabric events */
326 struct notifier_block nb;
329 * Give the switch driver somewhere to hang its private data
335 * Configuration data for this switch.
337 struct dsa_chip_data *cd;
340 * The switch operations.
342 const struct dsa_switch_ops *ops;
345 * Slave mii_bus and devices for the individual ports.
348 struct mii_bus *slave_mii_bus;
350 /* Ageing Time limits in msecs */
351 unsigned int ageing_time_min;
352 unsigned int ageing_time_max;
354 /* devlink used to represent this switch device */
355 struct devlink *devlink;
357 /* Number of switch port queues */
358 unsigned int num_tx_queues;
360 /* Disallow bridge core from requesting different VLAN awareness
361 * settings on ports if not hardware-supported
363 bool vlan_filtering_is_global;
365 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
366 * that have vlan_filtering=0. All drivers should ideally set this (and
367 * then the option would get removed), but it is unknown whether this
368 * would break things or not.
370 bool configure_vlan_while_not_filtering;
372 /* If the switch driver always programs the CPU port as egress tagged
373 * despite the VLAN configuration indicating otherwise, then setting
374 * @untag_bridge_pvid will force the DSA receive path to pop the bridge's
375 * default_pvid VLAN tagged frames to offer a consistent behavior
376 * between a vlan_filtering=0 and vlan_filtering=1 bridge device.
378 bool untag_bridge_pvid;
380 /* Let DSA manage the FDB entries towards the CPU, based on the
381 * software bridge database.
383 bool assisted_learning_on_cpu_port;
385 /* In case vlan_filtering_is_global is set, the VLAN awareness state
386 * should be retrieved from here and not from the per-port settings.
390 /* MAC PCS does not provide link state change interrupt, and requires
391 * polling. Flag passed on to PHYLINK.
395 /* For switches that only have the MRU configurable. To ensure the
396 * configured MTU is not exceeded, normalization of MRU on all bridged
397 * interfaces is needed.
399 bool mtu_enforcement_ingress;
401 /* Drivers that benefit from having an ID associated with each
402 * offloaded LAG should set this to the maximum number of
403 * supported IDs. DSA will then maintain a mapping of _at
404 * least_ these many IDs, accessible to drivers via
407 unsigned int num_lag_ids;
412 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
414 struct dsa_switch_tree *dst = ds->dst;
417 list_for_each_entry(dp, &dst->ports, list)
418 if (dp->ds == ds && dp->index == p)
424 static inline bool dsa_port_is_dsa(struct dsa_port *port)
426 return port->type == DSA_PORT_TYPE_DSA;
429 static inline bool dsa_port_is_cpu(struct dsa_port *port)
431 return port->type == DSA_PORT_TYPE_CPU;
434 static inline bool dsa_port_is_user(struct dsa_port *dp)
436 return dp->type == DSA_PORT_TYPE_USER;
439 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
441 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
444 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
446 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
449 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
451 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
454 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
456 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
459 static inline u32 dsa_user_ports(struct dsa_switch *ds)
464 for (p = 0; p < ds->num_ports; p++)
465 if (dsa_is_user_port(ds, p))
471 /* Return the local port used to reach an arbitrary switch device */
472 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
474 struct dsa_switch_tree *dst = ds->dst;
477 list_for_each_entry(dl, &dst->rtable, list)
478 if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
479 return dl->dp->index;
481 return ds->num_ports;
484 /* Return the local port used to reach an arbitrary switch port */
485 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
488 if (device == ds->index)
491 return dsa_routing_port(ds, device);
494 /* Return the local port used to reach the dedicated CPU port */
495 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
497 const struct dsa_port *dp = dsa_to_port(ds, port);
498 const struct dsa_port *cpu_dp = dp->cpu_dp;
503 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
506 /* Return true if this is the local port used to reach the CPU port */
507 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
509 if (dsa_is_unused_port(ds, port))
512 return port == dsa_upstream_port(ds, port);
515 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
516 * that the routing port from @downstream_ds to @upstream_ds is also the port
517 * which @downstream_ds uses to reach its dedicated CPU.
519 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
520 struct dsa_switch *downstream_ds)
524 if (upstream_ds == downstream_ds)
527 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
529 return dsa_is_upstream_port(downstream_ds, routing_port);
532 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
534 const struct dsa_switch *ds = dp->ds;
536 if (ds->vlan_filtering_is_global)
537 return ds->vlan_filtering;
539 return dp->vlan_filtering;
543 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
550 else if (dp->hsr_dev)
556 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
557 bool is_static, void *data);
558 struct dsa_switch_ops {
560 * Tagging protocol helpers called for the CPU ports and DSA links.
561 * @get_tag_protocol retrieves the initial tagging protocol and is
562 * mandatory. Switches which can operate using multiple tagging
563 * protocols should implement @change_tag_protocol and report in
564 * @get_tag_protocol the tagger in current use.
566 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
568 enum dsa_tag_protocol mprot);
569 int (*change_tag_protocol)(struct dsa_switch *ds, int port,
570 enum dsa_tag_protocol proto);
572 int (*setup)(struct dsa_switch *ds);
573 void (*teardown)(struct dsa_switch *ds);
574 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
577 * Access to the switch's PHY registers.
579 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
580 int (*phy_write)(struct dsa_switch *ds, int port,
581 int regnum, u16 val);
584 * Link state adjustment (called from libphy)
586 void (*adjust_link)(struct dsa_switch *ds, int port,
587 struct phy_device *phydev);
588 void (*fixed_link_update)(struct dsa_switch *ds, int port,
589 struct fixed_phy_status *st);
592 * PHYLINK integration
594 void (*phylink_validate)(struct dsa_switch *ds, int port,
595 unsigned long *supported,
596 struct phylink_link_state *state);
597 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
598 struct phylink_link_state *state);
599 void (*phylink_mac_config)(struct dsa_switch *ds, int port,
601 const struct phylink_link_state *state);
602 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port);
603 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
605 phy_interface_t interface);
606 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
608 phy_interface_t interface,
609 struct phy_device *phydev,
610 int speed, int duplex,
611 bool tx_pause, bool rx_pause);
612 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
613 struct phylink_link_state *state);
615 * Port statistics counters.
617 void (*get_strings)(struct dsa_switch *ds, int port,
618 u32 stringset, uint8_t *data);
619 void (*get_ethtool_stats)(struct dsa_switch *ds,
620 int port, uint64_t *data);
621 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
622 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
623 int port, uint64_t *data);
624 void (*get_stats64)(struct dsa_switch *ds, int port,
625 struct rtnl_link_stats64 *s);
626 void (*self_test)(struct dsa_switch *ds, int port,
627 struct ethtool_test *etest, u64 *data);
630 * ethtool Wake-on-LAN
632 void (*get_wol)(struct dsa_switch *ds, int port,
633 struct ethtool_wolinfo *w);
634 int (*set_wol)(struct dsa_switch *ds, int port,
635 struct ethtool_wolinfo *w);
638 * ethtool timestamp info
640 int (*get_ts_info)(struct dsa_switch *ds, int port,
641 struct ethtool_ts_info *ts);
646 int (*suspend)(struct dsa_switch *ds);
647 int (*resume)(struct dsa_switch *ds);
650 * Port enable/disable
652 int (*port_enable)(struct dsa_switch *ds, int port,
653 struct phy_device *phy);
654 void (*port_disable)(struct dsa_switch *ds, int port);
657 * Port's MAC EEE settings
659 int (*set_mac_eee)(struct dsa_switch *ds, int port,
660 struct ethtool_eee *e);
661 int (*get_mac_eee)(struct dsa_switch *ds, int port,
662 struct ethtool_eee *e);
665 int (*get_eeprom_len)(struct dsa_switch *ds);
666 int (*get_eeprom)(struct dsa_switch *ds,
667 struct ethtool_eeprom *eeprom, u8 *data);
668 int (*set_eeprom)(struct dsa_switch *ds,
669 struct ethtool_eeprom *eeprom, u8 *data);
674 int (*get_regs_len)(struct dsa_switch *ds, int port);
675 void (*get_regs)(struct dsa_switch *ds, int port,
676 struct ethtool_regs *regs, void *p);
679 * Upper device tracking.
681 int (*port_prechangeupper)(struct dsa_switch *ds, int port,
682 struct netdev_notifier_changeupper_info *info);
687 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
688 int (*port_bridge_join)(struct dsa_switch *ds, int port,
689 struct net_device *bridge);
690 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
691 struct net_device *bridge);
692 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
694 void (*port_fast_age)(struct dsa_switch *ds, int port);
695 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
696 struct switchdev_brport_flags flags,
697 struct netlink_ext_ack *extack);
698 int (*port_bridge_flags)(struct dsa_switch *ds, int port,
699 struct switchdev_brport_flags flags,
700 struct netlink_ext_ack *extack);
701 int (*port_set_mrouter)(struct dsa_switch *ds, int port, bool mrouter,
702 struct netlink_ext_ack *extack);
707 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
709 struct netlink_ext_ack *extack);
710 int (*port_vlan_add)(struct dsa_switch *ds, int port,
711 const struct switchdev_obj_port_vlan *vlan,
712 struct netlink_ext_ack *extack);
713 int (*port_vlan_del)(struct dsa_switch *ds, int port,
714 const struct switchdev_obj_port_vlan *vlan);
716 * Forwarding database
718 int (*port_fdb_add)(struct dsa_switch *ds, int port,
719 const unsigned char *addr, u16 vid);
720 int (*port_fdb_del)(struct dsa_switch *ds, int port,
721 const unsigned char *addr, u16 vid);
722 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
723 dsa_fdb_dump_cb_t *cb, void *data);
728 int (*port_mdb_add)(struct dsa_switch *ds, int port,
729 const struct switchdev_obj_port_mdb *mdb);
730 int (*port_mdb_del)(struct dsa_switch *ds, int port,
731 const struct switchdev_obj_port_mdb *mdb);
735 int (*get_rxnfc)(struct dsa_switch *ds, int port,
736 struct ethtool_rxnfc *nfc, u32 *rule_locs);
737 int (*set_rxnfc)(struct dsa_switch *ds, int port,
738 struct ethtool_rxnfc *nfc);
743 int (*cls_flower_add)(struct dsa_switch *ds, int port,
744 struct flow_cls_offload *cls, bool ingress);
745 int (*cls_flower_del)(struct dsa_switch *ds, int port,
746 struct flow_cls_offload *cls, bool ingress);
747 int (*cls_flower_stats)(struct dsa_switch *ds, int port,
748 struct flow_cls_offload *cls, bool ingress);
749 int (*port_mirror_add)(struct dsa_switch *ds, int port,
750 struct dsa_mall_mirror_tc_entry *mirror,
752 void (*port_mirror_del)(struct dsa_switch *ds, int port,
753 struct dsa_mall_mirror_tc_entry *mirror);
754 int (*port_policer_add)(struct dsa_switch *ds, int port,
755 struct dsa_mall_policer_tc_entry *policer);
756 void (*port_policer_del)(struct dsa_switch *ds, int port);
757 int (*port_setup_tc)(struct dsa_switch *ds, int port,
758 enum tc_setup_type type, void *type_data);
761 * Cross-chip operations
763 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index,
764 int sw_index, int port,
765 struct net_device *br);
766 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index,
767 int sw_index, int port,
768 struct net_device *br);
769 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index,
771 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index,
772 int port, struct net_device *lag,
773 struct netdev_lag_upper_info *info);
774 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index,
775 int port, struct net_device *lag);
780 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
782 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
784 void (*port_txtstamp)(struct dsa_switch *ds, int port,
785 struct sk_buff *skb);
786 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
787 struct sk_buff *skb, unsigned int type);
789 /* Devlink parameters, etc */
790 int (*devlink_param_get)(struct dsa_switch *ds, u32 id,
791 struct devlink_param_gset_ctx *ctx);
792 int (*devlink_param_set)(struct dsa_switch *ds, u32 id,
793 struct devlink_param_gset_ctx *ctx);
794 int (*devlink_info_get)(struct dsa_switch *ds,
795 struct devlink_info_req *req,
796 struct netlink_ext_ack *extack);
797 int (*devlink_sb_pool_get)(struct dsa_switch *ds,
798 unsigned int sb_index, u16 pool_index,
799 struct devlink_sb_pool_info *pool_info);
800 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index,
801 u16 pool_index, u32 size,
802 enum devlink_sb_threshold_type threshold_type,
803 struct netlink_ext_ack *extack);
804 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port,
805 unsigned int sb_index, u16 pool_index,
807 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port,
808 unsigned int sb_index, u16 pool_index,
810 struct netlink_ext_ack *extack);
811 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port,
812 unsigned int sb_index, u16 tc_index,
813 enum devlink_sb_pool_type pool_type,
814 u16 *p_pool_index, u32 *p_threshold);
815 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port,
816 unsigned int sb_index, u16 tc_index,
817 enum devlink_sb_pool_type pool_type,
818 u16 pool_index, u32 threshold,
819 struct netlink_ext_ack *extack);
820 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds,
821 unsigned int sb_index);
822 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds,
823 unsigned int sb_index);
824 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port,
825 unsigned int sb_index, u16 pool_index,
826 u32 *p_cur, u32 *p_max);
827 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port,
828 unsigned int sb_index, u16 tc_index,
829 enum devlink_sb_pool_type pool_type,
830 u32 *p_cur, u32 *p_max);
833 * MTU change functionality. Switches can also adjust their MRU through
834 * this method. By MTU, one understands the SDU (L2 payload) length.
835 * If the switch needs to account for the DSA tag on the CPU port, this
836 * method needs to do so privately.
838 int (*port_change_mtu)(struct dsa_switch *ds, int port,
840 int (*port_max_mtu)(struct dsa_switch *ds, int port);
845 int (*port_lag_change)(struct dsa_switch *ds, int port);
846 int (*port_lag_join)(struct dsa_switch *ds, int port,
847 struct net_device *lag,
848 struct netdev_lag_upper_info *info);
849 int (*port_lag_leave)(struct dsa_switch *ds, int port,
850 struct net_device *lag);
855 int (*port_hsr_join)(struct dsa_switch *ds, int port,
856 struct net_device *hsr);
857 int (*port_hsr_leave)(struct dsa_switch *ds, int port,
858 struct net_device *hsr);
863 int (*port_mrp_add)(struct dsa_switch *ds, int port,
864 const struct switchdev_obj_mrp *mrp);
865 int (*port_mrp_del)(struct dsa_switch *ds, int port,
866 const struct switchdev_obj_mrp *mrp);
867 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
868 const struct switchdev_obj_ring_role_mrp *mrp);
869 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
870 const struct switchdev_obj_ring_role_mrp *mrp);
873 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \
874 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \
875 dsa_devlink_param_get, dsa_devlink_param_set, NULL)
877 int dsa_devlink_param_get(struct devlink *dl, u32 id,
878 struct devlink_param_gset_ctx *ctx);
879 int dsa_devlink_param_set(struct devlink *dl, u32 id,
880 struct devlink_param_gset_ctx *ctx);
881 int dsa_devlink_params_register(struct dsa_switch *ds,
882 const struct devlink_param *params,
883 size_t params_count);
884 void dsa_devlink_params_unregister(struct dsa_switch *ds,
885 const struct devlink_param *params,
886 size_t params_count);
887 int dsa_devlink_resource_register(struct dsa_switch *ds,
888 const char *resource_name,
891 u64 parent_resource_id,
892 const struct devlink_resource_size_params *size_params);
894 void dsa_devlink_resources_unregister(struct dsa_switch *ds);
896 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds,
898 devlink_resource_occ_get_t *occ_get,
900 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
902 struct devlink_region *
903 dsa_devlink_region_create(struct dsa_switch *ds,
904 const struct devlink_region_ops *ops,
905 u32 region_max_snapshots, u64 region_size);
906 struct devlink_region *
907 dsa_devlink_port_region_create(struct dsa_switch *ds,
909 const struct devlink_port_region_ops *ops,
910 u32 region_max_snapshots, u64 region_size);
911 void dsa_devlink_region_destroy(struct devlink_region *region);
913 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
915 struct dsa_devlink_priv {
916 struct dsa_switch *ds;
919 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
921 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
927 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
929 struct devlink *dl = port->devlink;
930 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
935 static inline int dsa_devlink_port_to_port(struct devlink_port *port)
940 struct dsa_switch_driver {
941 struct list_head list;
942 const struct dsa_switch_ops *ops;
945 struct net_device *dsa_dev_to_net_device(struct device *dev);
947 /* Keep inline for faster access in hot path */
948 static inline bool netdev_uses_dsa(const struct net_device *dev)
950 #if IS_ENABLED(CONFIG_NET_DSA)
951 return dev->dsa_ptr && dev->dsa_ptr->rcv;
956 static inline bool dsa_can_decode(const struct sk_buff *skb,
957 struct net_device *dev)
959 #if IS_ENABLED(CONFIG_NET_DSA)
960 return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev);
965 /* All DSA tags that push the EtherType to the right (basically all except tail
966 * tags, which don't break dissection) can be treated the same from the
967 * perspective of the flow dissector.
970 * - offset: the (B - A) difference between:
971 * A. the position of the real EtherType and
972 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes
973 * after the normal EtherType was supposed to be)
974 * The offset in bytes is exactly equal to the tagger overhead (and half of
975 * that, in __be16 shorts).
977 * - proto: the value of the real EtherType.
979 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb,
980 __be16 *proto, int *offset)
982 #if IS_ENABLED(CONFIG_NET_DSA)
983 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops;
984 int tag_len = ops->needed_headroom;
987 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];
991 #if IS_ENABLED(CONFIG_NET_DSA)
992 static inline int __dsa_netdevice_ops_check(struct net_device *dev)
994 int err = -EOPNOTSUPP;
999 if (!dev->dsa_ptr->netdev_ops)
1005 static inline int dsa_ndo_do_ioctl(struct net_device *dev, struct ifreq *ifr,
1008 const struct dsa_netdevice_ops *ops;
1011 err = __dsa_netdevice_ops_check(dev);
1015 ops = dev->dsa_ptr->netdev_ops;
1017 return ops->ndo_do_ioctl(dev, ifr, cmd);
1020 static inline int dsa_ndo_do_ioctl(struct net_device *dev, struct ifreq *ifr,
1027 void dsa_unregister_switch(struct dsa_switch *ds);
1028 int dsa_register_switch(struct dsa_switch *ds);
1029 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
1030 #ifdef CONFIG_PM_SLEEP
1031 int dsa_switch_suspend(struct dsa_switch *ds);
1032 int dsa_switch_resume(struct dsa_switch *ds);
1034 static inline int dsa_switch_suspend(struct dsa_switch *ds)
1038 static inline int dsa_switch_resume(struct dsa_switch *ds)
1042 #endif /* CONFIG_PM_SLEEP */
1044 #if IS_ENABLED(CONFIG_NET_DSA)
1045 bool dsa_slave_dev_check(const struct net_device *dev);
1047 static inline bool dsa_slave_dev_check(const struct net_device *dev)
1053 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
1054 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data);
1055 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data);
1056 int dsa_port_get_phy_sset_count(struct dsa_port *dp);
1057 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
1059 struct dsa_tag_driver {
1060 const struct dsa_device_ops *ops;
1061 struct list_head list;
1062 struct module *owner;
1065 void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[],
1067 struct module *owner);
1068 void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[],
1069 unsigned int count);
1071 #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \
1072 static int __init dsa_tag_driver_module_init(void) \
1074 dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \
1078 module_init(dsa_tag_driver_module_init); \
1080 static void __exit dsa_tag_driver_module_exit(void) \
1082 dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \
1084 module_exit(dsa_tag_driver_module_exit)
1087 * module_dsa_tag_drivers() - Helper macro for registering DSA tag
1089 * @__ops_array: Array of tag driver strucutres
1091 * Helper macro for DSA tag drivers which do not do anything special
1092 * in module init/exit. Each module may only use this macro once, and
1093 * calling it replaces module_init() and module_exit().
1095 #define module_dsa_tag_drivers(__ops_array) \
1096 dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array))
1098 #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops
1100 /* Create a static structure we can build a linked list of dsa_tag
1103 #define DSA_TAG_DRIVER(__ops) \
1104 static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \
1109 * module_dsa_tag_driver() - Helper macro for registering a single DSA tag
1111 * @__ops: Single tag driver structures
1113 * Helper macro for DSA tag drivers which do not do anything special
1114 * in module init/exit. Each module may only use this macro once, and
1115 * calling it replaces module_init() and module_exit().
1117 #define module_dsa_tag_driver(__ops) \
1118 DSA_TAG_DRIVER(__ops); \
1120 static struct dsa_tag_driver *dsa_tag_driver_array[] = { \
1121 &DSA_TAG_DRIVER_NAME(__ops) \
1123 module_dsa_tag_drivers(dsa_tag_driver_array)