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,
84 struct dsa_device_ops {
85 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
86 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
87 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
89 unsigned int needed_headroom;
90 unsigned int needed_tailroom;
92 enum dsa_tag_protocol proto;
93 /* Some tagging protocols either mangle or shift the destination MAC
94 * address, in which case the DSA master would drop packets on ingress
95 * if what it understands out of the destination MAC address is not in
98 bool promisc_on_master;
101 /* This structure defines the control interfaces that are overlayed by the
102 * DSA layer on top of the DSA CPU/management net_device instance. This is
103 * used by the core net_device layer while calling various net_device_ops
106 struct dsa_netdevice_ops {
107 int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr,
111 #define DSA_TAG_DRIVER_ALIAS "dsa_tag-"
112 #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \
113 MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE))
115 struct dsa_switch_tree {
116 struct list_head list;
118 /* Notifier chain for switch-wide events */
119 struct raw_notifier_head nh;
121 /* Tree identifier */
124 /* Number of switches attached to this tree */
125 struct kref refcount;
127 /* Has this tree been applied to the hardware? */
130 /* Tagging protocol operations */
131 const struct dsa_device_ops *tag_ops;
133 /* Default tagging protocol preferred by the switches in this
136 enum dsa_tag_protocol default_proto;
139 * Configuration data for the platform device that owns
140 * this dsa switch tree instance.
142 struct dsa_platform_data *pd;
144 /* List of switch ports */
145 struct list_head ports;
147 /* List of DSA links composing the routing table */
148 struct list_head rtable;
150 /* Maps offloaded LAG netdevs to a zero-based linear ID for
151 * drivers that need it.
153 struct net_device **lags;
154 unsigned int lags_len;
156 /* Track the largest switch index within a tree */
157 unsigned int last_switch;
160 #define dsa_lags_foreach_id(_id, _dst) \
161 for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \
162 if ((_dst)->lags[(_id)])
164 #define dsa_lag_foreach_port(_dp, _dst, _lag) \
165 list_for_each_entry((_dp), &(_dst)->ports, list) \
166 if ((_dp)->lag_dev == (_lag))
168 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \
169 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
170 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr))
172 static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst,
175 return dst->lags[id];
178 static inline int dsa_lag_id(struct dsa_switch_tree *dst,
179 struct net_device *lag)
183 dsa_lags_foreach_id(id, dst) {
184 if (dsa_lag_dev(dst, id) == lag)
191 /* TC matchall action types */
192 enum dsa_port_mall_action_type {
193 DSA_PORT_MALL_MIRROR,
194 DSA_PORT_MALL_POLICER,
197 /* TC mirroring entry */
198 struct dsa_mall_mirror_tc_entry {
203 /* TC port policer entry */
204 struct dsa_mall_policer_tc_entry {
206 u64 rate_bytes_per_sec;
209 /* TC matchall entry */
210 struct dsa_mall_tc_entry {
211 struct list_head list;
212 unsigned long cookie;
213 enum dsa_port_mall_action_type type;
215 struct dsa_mall_mirror_tc_entry mirror;
216 struct dsa_mall_policer_tc_entry policer;
222 /* A CPU port is physically connected to a master device.
223 * A user port exposed to userspace has a slave device.
226 struct net_device *master;
227 struct net_device *slave;
230 /* Copy of the tagging protocol operations, for quicker access
231 * in the data path. Valid only for the CPU ports.
233 const struct dsa_device_ops *tag_ops;
235 /* Copies for faster access in master receive hot path */
236 struct dsa_switch_tree *dst;
237 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
240 DSA_PORT_TYPE_UNUSED = 0,
246 struct dsa_switch *ds;
249 struct dsa_port *cpu_dp;
251 struct device_node *dn;
252 unsigned int ageing_time;
254 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */
257 struct net_device *bridge_dev;
259 struct devlink_port devlink_port;
260 bool devlink_port_setup;
262 struct phylink_config pl_config;
263 struct net_device *lag_dev;
265 struct net_device *hsr_dev;
267 struct list_head list;
270 * Give the switch driver somewhere to hang its per-port private data
271 * structures (accessible from the tagger).
276 * Original copy of the master netdev ethtool_ops
278 const struct ethtool_ops *orig_ethtool_ops;
281 * Original copy of the master netdev net_device_ops
283 const struct dsa_netdevice_ops *netdev_ops;
285 /* List of MAC addresses that must be forwarded on this port.
286 * These are only valid on CPU ports and DSA links.
288 struct list_head fdbs;
289 struct list_head mdbs;
294 /* TODO: ideally DSA ports would have a single dp->link_dp member,
295 * and no dst->rtable nor this struct dsa_link would be needed,
296 * but this would require some more complex tree walking,
297 * so keep it stupid at the moment and list them all.
301 struct dsa_port *link_dp;
302 struct list_head list;
305 struct dsa_mac_addr {
306 unsigned char addr[ETH_ALEN];
309 struct list_head list;
318 * Parent switch tree, and switch index.
320 struct dsa_switch_tree *dst;
323 /* Listener for switch fabric events */
324 struct notifier_block nb;
327 * Give the switch driver somewhere to hang its private data
333 * Configuration data for this switch.
335 struct dsa_chip_data *cd;
338 * The switch operations.
340 const struct dsa_switch_ops *ops;
343 * Slave mii_bus and devices for the individual ports.
346 struct mii_bus *slave_mii_bus;
348 /* Ageing Time limits in msecs */
349 unsigned int ageing_time_min;
350 unsigned int ageing_time_max;
352 /* Storage for drivers using tag_8021q */
353 struct dsa_8021q_context *tag_8021q_ctx;
355 /* devlink used to represent this switch device */
356 struct devlink *devlink;
358 /* Number of switch port queues */
359 unsigned int num_tx_queues;
361 /* Disallow bridge core from requesting different VLAN awareness
362 * settings on ports if not hardware-supported
364 bool vlan_filtering_is_global;
366 /* Keep VLAN filtering enabled on ports not offloading any upper. */
367 bool needs_standalone_vlan_filtering;
369 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
370 * that have vlan_filtering=0. All drivers should ideally set this (and
371 * then the option would get removed), but it is unknown whether this
372 * would break things or not.
374 bool configure_vlan_while_not_filtering;
376 /* If the switch driver always programs the CPU port as egress tagged
377 * despite the VLAN configuration indicating otherwise, then setting
378 * @untag_bridge_pvid will force the DSA receive path to pop the bridge's
379 * default_pvid VLAN tagged frames to offer a consistent behavior
380 * between a vlan_filtering=0 and vlan_filtering=1 bridge device.
382 bool untag_bridge_pvid;
384 /* Let DSA manage the FDB entries towards the CPU, based on the
385 * software bridge database.
387 bool assisted_learning_on_cpu_port;
389 /* In case vlan_filtering_is_global is set, the VLAN awareness state
390 * should be retrieved from here and not from the per-port settings.
394 /* MAC PCS does not provide link state change interrupt, and requires
395 * polling. Flag passed on to PHYLINK.
399 /* For switches that only have the MRU configurable. To ensure the
400 * configured MTU is not exceeded, normalization of MRU on all bridged
401 * interfaces is needed.
403 bool mtu_enforcement_ingress;
405 /* Drivers that benefit from having an ID associated with each
406 * offloaded LAG should set this to the maximum number of
407 * supported IDs. DSA will then maintain a mapping of _at
408 * least_ these many IDs, accessible to drivers via
411 unsigned int num_lag_ids;
413 /* Drivers that support bridge forwarding offload should set this to
414 * the maximum number of bridges spanning the same switch tree (or all
415 * trees, in the case of cross-tree bridging support) that can be
418 unsigned int num_fwd_offloading_bridges;
423 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
425 struct dsa_switch_tree *dst = ds->dst;
428 list_for_each_entry(dp, &dst->ports, list)
429 if (dp->ds == ds && dp->index == p)
435 static inline bool dsa_port_is_dsa(struct dsa_port *port)
437 return port->type == DSA_PORT_TYPE_DSA;
440 static inline bool dsa_port_is_cpu(struct dsa_port *port)
442 return port->type == DSA_PORT_TYPE_CPU;
445 static inline bool dsa_port_is_user(struct dsa_port *dp)
447 return dp->type == DSA_PORT_TYPE_USER;
450 static inline bool dsa_port_is_unused(struct dsa_port *dp)
452 return dp->type == DSA_PORT_TYPE_UNUSED;
455 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
457 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
460 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
462 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
465 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
467 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
470 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
472 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
475 static inline u32 dsa_user_ports(struct dsa_switch *ds)
480 for (p = 0; p < ds->num_ports; p++)
481 if (dsa_is_user_port(ds, p))
487 /* Return the local port used to reach an arbitrary switch device */
488 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
490 struct dsa_switch_tree *dst = ds->dst;
493 list_for_each_entry(dl, &dst->rtable, list)
494 if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
495 return dl->dp->index;
497 return ds->num_ports;
500 /* Return the local port used to reach an arbitrary switch port */
501 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
504 if (device == ds->index)
507 return dsa_routing_port(ds, device);
510 /* Return the local port used to reach the dedicated CPU port */
511 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
513 const struct dsa_port *dp = dsa_to_port(ds, port);
514 const struct dsa_port *cpu_dp = dp->cpu_dp;
519 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
522 /* Return true if this is the local port used to reach the CPU port */
523 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
525 if (dsa_is_unused_port(ds, port))
528 return port == dsa_upstream_port(ds, port);
531 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
532 * that the routing port from @downstream_ds to @upstream_ds is also the port
533 * which @downstream_ds uses to reach its dedicated CPU.
535 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
536 struct dsa_switch *downstream_ds)
540 if (upstream_ds == downstream_ds)
543 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
545 return dsa_is_upstream_port(downstream_ds, routing_port);
548 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
550 const struct dsa_switch *ds = dp->ds;
552 if (ds->vlan_filtering_is_global)
553 return ds->vlan_filtering;
555 return dp->vlan_filtering;
559 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
566 else if (dp->hsr_dev)
572 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
573 bool is_static, void *data);
574 struct dsa_switch_ops {
576 * Tagging protocol helpers called for the CPU ports and DSA links.
577 * @get_tag_protocol retrieves the initial tagging protocol and is
578 * mandatory. Switches which can operate using multiple tagging
579 * protocols should implement @change_tag_protocol and report in
580 * @get_tag_protocol the tagger in current use.
582 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
584 enum dsa_tag_protocol mprot);
585 int (*change_tag_protocol)(struct dsa_switch *ds, int port,
586 enum dsa_tag_protocol proto);
588 int (*setup)(struct dsa_switch *ds);
589 void (*teardown)(struct dsa_switch *ds);
590 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
593 * Access to the switch's PHY registers.
595 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
596 int (*phy_write)(struct dsa_switch *ds, int port,
597 int regnum, u16 val);
600 * Link state adjustment (called from libphy)
602 void (*adjust_link)(struct dsa_switch *ds, int port,
603 struct phy_device *phydev);
604 void (*fixed_link_update)(struct dsa_switch *ds, int port,
605 struct fixed_phy_status *st);
608 * PHYLINK integration
610 void (*phylink_validate)(struct dsa_switch *ds, int port,
611 unsigned long *supported,
612 struct phylink_link_state *state);
613 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
614 struct phylink_link_state *state);
615 void (*phylink_mac_config)(struct dsa_switch *ds, int port,
617 const struct phylink_link_state *state);
618 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port);
619 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
621 phy_interface_t interface);
622 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
624 phy_interface_t interface,
625 struct phy_device *phydev,
626 int speed, int duplex,
627 bool tx_pause, bool rx_pause);
628 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
629 struct phylink_link_state *state);
631 * Port statistics counters.
633 void (*get_strings)(struct dsa_switch *ds, int port,
634 u32 stringset, uint8_t *data);
635 void (*get_ethtool_stats)(struct dsa_switch *ds,
636 int port, uint64_t *data);
637 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
638 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
639 int port, uint64_t *data);
640 void (*get_stats64)(struct dsa_switch *ds, int port,
641 struct rtnl_link_stats64 *s);
642 void (*self_test)(struct dsa_switch *ds, int port,
643 struct ethtool_test *etest, u64 *data);
646 * ethtool Wake-on-LAN
648 void (*get_wol)(struct dsa_switch *ds, int port,
649 struct ethtool_wolinfo *w);
650 int (*set_wol)(struct dsa_switch *ds, int port,
651 struct ethtool_wolinfo *w);
654 * ethtool timestamp info
656 int (*get_ts_info)(struct dsa_switch *ds, int port,
657 struct ethtool_ts_info *ts);
662 int (*suspend)(struct dsa_switch *ds);
663 int (*resume)(struct dsa_switch *ds);
666 * Port enable/disable
668 int (*port_enable)(struct dsa_switch *ds, int port,
669 struct phy_device *phy);
670 void (*port_disable)(struct dsa_switch *ds, int port);
673 * Port's MAC EEE settings
675 int (*set_mac_eee)(struct dsa_switch *ds, int port,
676 struct ethtool_eee *e);
677 int (*get_mac_eee)(struct dsa_switch *ds, int port,
678 struct ethtool_eee *e);
681 int (*get_eeprom_len)(struct dsa_switch *ds);
682 int (*get_eeprom)(struct dsa_switch *ds,
683 struct ethtool_eeprom *eeprom, u8 *data);
684 int (*set_eeprom)(struct dsa_switch *ds,
685 struct ethtool_eeprom *eeprom, u8 *data);
690 int (*get_regs_len)(struct dsa_switch *ds, int port);
691 void (*get_regs)(struct dsa_switch *ds, int port,
692 struct ethtool_regs *regs, void *p);
695 * Upper device tracking.
697 int (*port_prechangeupper)(struct dsa_switch *ds, int port,
698 struct netdev_notifier_changeupper_info *info);
703 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
704 int (*port_bridge_join)(struct dsa_switch *ds, int port,
705 struct net_device *bridge);
706 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
707 struct net_device *bridge);
708 /* Called right after .port_bridge_join() */
709 int (*port_bridge_tx_fwd_offload)(struct dsa_switch *ds, int port,
710 struct net_device *bridge,
712 /* Called right before .port_bridge_leave() */
713 void (*port_bridge_tx_fwd_unoffload)(struct dsa_switch *ds, int port,
714 struct net_device *bridge,
716 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
718 void (*port_fast_age)(struct dsa_switch *ds, int port);
719 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
720 struct switchdev_brport_flags flags,
721 struct netlink_ext_ack *extack);
722 int (*port_bridge_flags)(struct dsa_switch *ds, int port,
723 struct switchdev_brport_flags flags,
724 struct netlink_ext_ack *extack);
729 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
731 struct netlink_ext_ack *extack);
732 int (*port_vlan_add)(struct dsa_switch *ds, int port,
733 const struct switchdev_obj_port_vlan *vlan,
734 struct netlink_ext_ack *extack);
735 int (*port_vlan_del)(struct dsa_switch *ds, int port,
736 const struct switchdev_obj_port_vlan *vlan);
738 * Forwarding database
740 int (*port_fdb_add)(struct dsa_switch *ds, int port,
741 const unsigned char *addr, u16 vid);
742 int (*port_fdb_del)(struct dsa_switch *ds, int port,
743 const unsigned char *addr, u16 vid);
744 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
745 dsa_fdb_dump_cb_t *cb, void *data);
750 int (*port_mdb_add)(struct dsa_switch *ds, int port,
751 const struct switchdev_obj_port_mdb *mdb);
752 int (*port_mdb_del)(struct dsa_switch *ds, int port,
753 const struct switchdev_obj_port_mdb *mdb);
757 int (*get_rxnfc)(struct dsa_switch *ds, int port,
758 struct ethtool_rxnfc *nfc, u32 *rule_locs);
759 int (*set_rxnfc)(struct dsa_switch *ds, int port,
760 struct ethtool_rxnfc *nfc);
765 int (*cls_flower_add)(struct dsa_switch *ds, int port,
766 struct flow_cls_offload *cls, bool ingress);
767 int (*cls_flower_del)(struct dsa_switch *ds, int port,
768 struct flow_cls_offload *cls, bool ingress);
769 int (*cls_flower_stats)(struct dsa_switch *ds, int port,
770 struct flow_cls_offload *cls, bool ingress);
771 int (*port_mirror_add)(struct dsa_switch *ds, int port,
772 struct dsa_mall_mirror_tc_entry *mirror,
774 void (*port_mirror_del)(struct dsa_switch *ds, int port,
775 struct dsa_mall_mirror_tc_entry *mirror);
776 int (*port_policer_add)(struct dsa_switch *ds, int port,
777 struct dsa_mall_policer_tc_entry *policer);
778 void (*port_policer_del)(struct dsa_switch *ds, int port);
779 int (*port_setup_tc)(struct dsa_switch *ds, int port,
780 enum tc_setup_type type, void *type_data);
783 * Cross-chip operations
785 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index,
786 int sw_index, int port,
787 struct net_device *br);
788 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index,
789 int sw_index, int port,
790 struct net_device *br);
791 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index,
793 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index,
794 int port, struct net_device *lag,
795 struct netdev_lag_upper_info *info);
796 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index,
797 int port, struct net_device *lag);
802 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
804 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
806 void (*port_txtstamp)(struct dsa_switch *ds, int port,
807 struct sk_buff *skb);
808 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
809 struct sk_buff *skb, unsigned int type);
811 /* Devlink parameters, etc */
812 int (*devlink_param_get)(struct dsa_switch *ds, u32 id,
813 struct devlink_param_gset_ctx *ctx);
814 int (*devlink_param_set)(struct dsa_switch *ds, u32 id,
815 struct devlink_param_gset_ctx *ctx);
816 int (*devlink_info_get)(struct dsa_switch *ds,
817 struct devlink_info_req *req,
818 struct netlink_ext_ack *extack);
819 int (*devlink_sb_pool_get)(struct dsa_switch *ds,
820 unsigned int sb_index, u16 pool_index,
821 struct devlink_sb_pool_info *pool_info);
822 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index,
823 u16 pool_index, u32 size,
824 enum devlink_sb_threshold_type threshold_type,
825 struct netlink_ext_ack *extack);
826 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port,
827 unsigned int sb_index, u16 pool_index,
829 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port,
830 unsigned int sb_index, u16 pool_index,
832 struct netlink_ext_ack *extack);
833 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port,
834 unsigned int sb_index, u16 tc_index,
835 enum devlink_sb_pool_type pool_type,
836 u16 *p_pool_index, u32 *p_threshold);
837 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port,
838 unsigned int sb_index, u16 tc_index,
839 enum devlink_sb_pool_type pool_type,
840 u16 pool_index, u32 threshold,
841 struct netlink_ext_ack *extack);
842 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds,
843 unsigned int sb_index);
844 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds,
845 unsigned int sb_index);
846 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port,
847 unsigned int sb_index, u16 pool_index,
848 u32 *p_cur, u32 *p_max);
849 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port,
850 unsigned int sb_index, u16 tc_index,
851 enum devlink_sb_pool_type pool_type,
852 u32 *p_cur, u32 *p_max);
855 * MTU change functionality. Switches can also adjust their MRU through
856 * this method. By MTU, one understands the SDU (L2 payload) length.
857 * If the switch needs to account for the DSA tag on the CPU port, this
858 * method needs to do so privately.
860 int (*port_change_mtu)(struct dsa_switch *ds, int port,
862 int (*port_max_mtu)(struct dsa_switch *ds, int port);
867 int (*port_lag_change)(struct dsa_switch *ds, int port);
868 int (*port_lag_join)(struct dsa_switch *ds, int port,
869 struct net_device *lag,
870 struct netdev_lag_upper_info *info);
871 int (*port_lag_leave)(struct dsa_switch *ds, int port,
872 struct net_device *lag);
877 int (*port_hsr_join)(struct dsa_switch *ds, int port,
878 struct net_device *hsr);
879 int (*port_hsr_leave)(struct dsa_switch *ds, int port,
880 struct net_device *hsr);
885 int (*port_mrp_add)(struct dsa_switch *ds, int port,
886 const struct switchdev_obj_mrp *mrp);
887 int (*port_mrp_del)(struct dsa_switch *ds, int port,
888 const struct switchdev_obj_mrp *mrp);
889 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
890 const struct switchdev_obj_ring_role_mrp *mrp);
891 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
892 const struct switchdev_obj_ring_role_mrp *mrp);
895 * tag_8021q operations
897 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
899 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
902 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \
903 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \
904 dsa_devlink_param_get, dsa_devlink_param_set, NULL)
906 int dsa_devlink_param_get(struct devlink *dl, u32 id,
907 struct devlink_param_gset_ctx *ctx);
908 int dsa_devlink_param_set(struct devlink *dl, u32 id,
909 struct devlink_param_gset_ctx *ctx);
910 int dsa_devlink_params_register(struct dsa_switch *ds,
911 const struct devlink_param *params,
912 size_t params_count);
913 void dsa_devlink_params_unregister(struct dsa_switch *ds,
914 const struct devlink_param *params,
915 size_t params_count);
916 int dsa_devlink_resource_register(struct dsa_switch *ds,
917 const char *resource_name,
920 u64 parent_resource_id,
921 const struct devlink_resource_size_params *size_params);
923 void dsa_devlink_resources_unregister(struct dsa_switch *ds);
925 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds,
927 devlink_resource_occ_get_t *occ_get,
929 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
931 struct devlink_region *
932 dsa_devlink_region_create(struct dsa_switch *ds,
933 const struct devlink_region_ops *ops,
934 u32 region_max_snapshots, u64 region_size);
935 struct devlink_region *
936 dsa_devlink_port_region_create(struct dsa_switch *ds,
938 const struct devlink_port_region_ops *ops,
939 u32 region_max_snapshots, u64 region_size);
940 void dsa_devlink_region_destroy(struct devlink_region *region);
942 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
944 struct dsa_devlink_priv {
945 struct dsa_switch *ds;
948 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
950 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
956 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
958 struct devlink *dl = port->devlink;
959 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
964 static inline int dsa_devlink_port_to_port(struct devlink_port *port)
969 struct dsa_switch_driver {
970 struct list_head list;
971 const struct dsa_switch_ops *ops;
974 struct net_device *dsa_dev_to_net_device(struct device *dev);
976 /* Keep inline for faster access in hot path */
977 static inline bool netdev_uses_dsa(const struct net_device *dev)
979 #if IS_ENABLED(CONFIG_NET_DSA)
980 return dev->dsa_ptr && dev->dsa_ptr->rcv;
985 /* All DSA tags that push the EtherType to the right (basically all except tail
986 * tags, which don't break dissection) can be treated the same from the
987 * perspective of the flow dissector.
990 * - offset: the (B - A) difference between:
991 * A. the position of the real EtherType and
992 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes
993 * after the normal EtherType was supposed to be)
994 * The offset in bytes is exactly equal to the tagger overhead (and half of
995 * that, in __be16 shorts).
997 * - proto: the value of the real EtherType.
999 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb,
1000 __be16 *proto, int *offset)
1002 #if IS_ENABLED(CONFIG_NET_DSA)
1003 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops;
1004 int tag_len = ops->needed_headroom;
1007 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];
1011 #if IS_ENABLED(CONFIG_NET_DSA)
1012 static inline int __dsa_netdevice_ops_check(struct net_device *dev)
1014 int err = -EOPNOTSUPP;
1019 if (!dev->dsa_ptr->netdev_ops)
1025 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr,
1028 const struct dsa_netdevice_ops *ops;
1031 err = __dsa_netdevice_ops_check(dev);
1035 ops = dev->dsa_ptr->netdev_ops;
1037 return ops->ndo_eth_ioctl(dev, ifr, cmd);
1040 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr,
1047 void dsa_unregister_switch(struct dsa_switch *ds);
1048 int dsa_register_switch(struct dsa_switch *ds);
1049 void dsa_switch_shutdown(struct dsa_switch *ds);
1050 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
1051 #ifdef CONFIG_PM_SLEEP
1052 int dsa_switch_suspend(struct dsa_switch *ds);
1053 int dsa_switch_resume(struct dsa_switch *ds);
1055 static inline int dsa_switch_suspend(struct dsa_switch *ds)
1059 static inline int dsa_switch_resume(struct dsa_switch *ds)
1063 #endif /* CONFIG_PM_SLEEP */
1065 #if IS_ENABLED(CONFIG_NET_DSA)
1066 bool dsa_slave_dev_check(const struct net_device *dev);
1068 static inline bool dsa_slave_dev_check(const struct net_device *dev)
1074 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
1075 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data);
1076 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data);
1077 int dsa_port_get_phy_sset_count(struct dsa_port *dp);
1078 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
1080 struct dsa_tag_driver {
1081 const struct dsa_device_ops *ops;
1082 struct list_head list;
1083 struct module *owner;
1086 void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[],
1088 struct module *owner);
1089 void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[],
1090 unsigned int count);
1092 #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \
1093 static int __init dsa_tag_driver_module_init(void) \
1095 dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \
1099 module_init(dsa_tag_driver_module_init); \
1101 static void __exit dsa_tag_driver_module_exit(void) \
1103 dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \
1105 module_exit(dsa_tag_driver_module_exit)
1108 * module_dsa_tag_drivers() - Helper macro for registering DSA tag
1110 * @__ops_array: Array of tag driver strucutres
1112 * Helper macro for DSA tag drivers which do not do anything special
1113 * in module init/exit. Each module may only use this macro once, and
1114 * calling it replaces module_init() and module_exit().
1116 #define module_dsa_tag_drivers(__ops_array) \
1117 dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array))
1119 #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops
1121 /* Create a static structure we can build a linked list of dsa_tag
1124 #define DSA_TAG_DRIVER(__ops) \
1125 static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \
1130 * module_dsa_tag_driver() - Helper macro for registering a single DSA tag
1132 * @__ops: Single tag driver structures
1134 * Helper macro for DSA tag drivers which do not do anything special
1135 * in module init/exit. Each module may only use this macro once, and
1136 * calling it replaces module_init() and module_exit().
1138 #define module_dsa_tag_driver(__ops) \
1139 DSA_TAG_DRIVER(__ops); \
1141 static struct dsa_tag_driver *dsa_tag_driver_array[] = { \
1142 &DSA_TAG_DRIVER_NAME(__ops) \
1144 module_dsa_tag_drivers(dsa_tag_driver_array)