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
54 #define DSA_TAG_PROTO_RTL8_4_VALUE 24
55 #define DSA_TAG_PROTO_RTL8_4T_VALUE 25
56 #define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26
57 #define DSA_TAG_PROTO_LAN937X_VALUE 27
59 enum dsa_tag_protocol {
60 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
61 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
62 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
63 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
64 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
65 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
66 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE,
67 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE,
68 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE,
69 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE,
70 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE,
71 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE,
72 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE,
73 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE,
74 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE,
75 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE,
76 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE,
77 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE,
78 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE,
79 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE,
80 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE,
81 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE,
82 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE,
83 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE,
84 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE,
85 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE,
86 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE,
87 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE,
92 struct dsa_device_ops {
93 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
94 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
95 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
97 int (*connect)(struct dsa_switch *ds);
98 void (*disconnect)(struct dsa_switch *ds);
99 unsigned int needed_headroom;
100 unsigned int needed_tailroom;
102 enum dsa_tag_protocol proto;
103 /* Some tagging protocols either mangle or shift the destination MAC
104 * address, in which case the DSA master would drop packets on ingress
105 * if what it understands out of the destination MAC address is not in
108 bool promisc_on_master;
111 /* This structure defines the control interfaces that are overlayed by the
112 * DSA layer on top of the DSA CPU/management net_device instance. This is
113 * used by the core net_device layer while calling various net_device_ops
116 struct dsa_netdevice_ops {
117 int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr,
121 #define DSA_TAG_DRIVER_ALIAS "dsa_tag-"
122 #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \
123 MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE))
126 struct net_device *dev;
128 struct mutex fdb_lock;
129 struct list_head fdbs;
133 struct dsa_switch_tree {
134 struct list_head list;
136 /* List of switch ports */
137 struct list_head ports;
139 /* Notifier chain for switch-wide events */
140 struct raw_notifier_head nh;
142 /* Tree identifier */
145 /* Number of switches attached to this tree */
146 struct kref refcount;
148 /* Maps offloaded LAG netdevs to a zero-based linear ID for
149 * drivers that need it.
151 struct dsa_lag **lags;
153 /* Tagging protocol operations */
154 const struct dsa_device_ops *tag_ops;
156 /* Default tagging protocol preferred by the switches in this
159 enum dsa_tag_protocol default_proto;
161 /* Has this tree been applied to the hardware? */
165 * Configuration data for the platform device that owns
166 * this dsa switch tree instance.
168 struct dsa_platform_data *pd;
170 /* List of DSA links composing the routing table */
171 struct list_head rtable;
173 /* Length of "lags" array */
174 unsigned int lags_len;
176 /* Track the largest switch index within a tree */
177 unsigned int last_switch;
180 /* LAG IDs are one-based, the dst->lags array is zero-based */
181 #define dsa_lags_foreach_id(_id, _dst) \
182 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \
183 if ((_dst)->lags[(_id) - 1])
185 #define dsa_lag_foreach_port(_dp, _dst, _lag) \
186 list_for_each_entry((_dp), &(_dst)->ports, list) \
187 if (dsa_port_offloads_lag((_dp), (_lag)))
189 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \
190 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
191 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr))
193 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst,
196 /* DSA LAG IDs are one-based, dst->lags is zero-based */
197 return dst->lags[id - 1];
200 static inline int dsa_lag_id(struct dsa_switch_tree *dst,
201 struct net_device *lag_dev)
205 dsa_lags_foreach_id(id, dst) {
206 struct dsa_lag *lag = dsa_lag_by_id(dst, id);
208 if (lag->dev == lag_dev)
215 /* TC matchall action types */
216 enum dsa_port_mall_action_type {
217 DSA_PORT_MALL_MIRROR,
218 DSA_PORT_MALL_POLICER,
221 /* TC mirroring entry */
222 struct dsa_mall_mirror_tc_entry {
227 /* TC port policer entry */
228 struct dsa_mall_policer_tc_entry {
230 u64 rate_bytes_per_sec;
233 /* TC matchall entry */
234 struct dsa_mall_tc_entry {
235 struct list_head list;
236 unsigned long cookie;
237 enum dsa_port_mall_action_type type;
239 struct dsa_mall_mirror_tc_entry mirror;
240 struct dsa_mall_policer_tc_entry policer;
245 struct net_device *dev;
252 /* A CPU port is physically connected to a master device.
253 * A user port exposed to userspace has a slave device.
256 struct net_device *master;
257 struct net_device *slave;
260 /* Copy of the tagging protocol operations, for quicker access
261 * in the data path. Valid only for the CPU ports.
263 const struct dsa_device_ops *tag_ops;
265 /* Copies for faster access in master receive hot path */
266 struct dsa_switch_tree *dst;
267 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
269 struct dsa_switch *ds;
274 DSA_PORT_TYPE_UNUSED = 0,
281 struct dsa_port *cpu_dp;
286 /* Warning: the following bit fields are not atomic, and updating them
287 * can only be done from code paths where concurrency is not possible
288 * (probe time or under rtnl_lock).
292 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */
297 u8 devlink_port_setup:1;
299 /* Master state bits, valid only on CPU ports */
300 u8 master_admin_up:1;
303 /* Valid only on user ports */
304 u8 cpu_port_in_lag:1;
308 struct device_node *dn;
309 unsigned int ageing_time;
311 struct dsa_bridge *bridge;
312 struct devlink_port devlink_port;
314 struct phylink_config pl_config;
316 struct net_device *hsr_dev;
318 struct list_head list;
321 * Original copy of the master netdev ethtool_ops
323 const struct ethtool_ops *orig_ethtool_ops;
326 * Original copy of the master netdev net_device_ops
328 const struct dsa_netdevice_ops *netdev_ops;
330 /* List of MAC addresses that must be forwarded on this port.
331 * These are only valid on CPU ports and DSA links.
333 struct mutex addr_lists_lock;
334 struct list_head fdbs;
335 struct list_head mdbs;
337 /* List of VLANs that CPU and DSA ports are members of. */
338 struct mutex vlans_lock;
339 struct list_head vlans;
342 /* TODO: ideally DSA ports would have a single dp->link_dp member,
343 * and no dst->rtable nor this struct dsa_link would be needed,
344 * but this would require some more complex tree walking,
345 * so keep it stupid at the moment and list them all.
349 struct dsa_port *link_dp;
350 struct list_head list;
360 enum dsa_db_type type;
363 const struct dsa_port *dp;
365 struct dsa_bridge bridge;
369 struct dsa_mac_addr {
370 unsigned char addr[ETH_ALEN];
373 struct list_head list;
380 struct list_head list;
387 * Parent switch tree, and switch index.
389 struct dsa_switch_tree *dst;
392 /* Warning: the following bit fields are not atomic, and updating them
393 * can only be done from code paths where concurrency is not possible
394 * (probe time or under rtnl_lock).
398 /* Disallow bridge core from requesting different VLAN awareness
399 * settings on ports if not hardware-supported
401 u32 vlan_filtering_is_global:1;
403 /* Keep VLAN filtering enabled on ports not offloading any upper */
404 u32 needs_standalone_vlan_filtering:1;
406 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges
407 * that have vlan_filtering=0. All drivers should ideally set this (and
408 * then the option would get removed), but it is unknown whether this
409 * would break things or not.
411 u32 configure_vlan_while_not_filtering:1;
413 /* If the switch driver always programs the CPU port as egress tagged
414 * despite the VLAN configuration indicating otherwise, then setting
415 * @untag_bridge_pvid will force the DSA receive path to pop the
416 * bridge's default_pvid VLAN tagged frames to offer a consistent
417 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge
420 u32 untag_bridge_pvid:1;
422 /* Let DSA manage the FDB entries towards the
423 * CPU, based on the software bridge database.
425 u32 assisted_learning_on_cpu_port:1;
427 /* In case vlan_filtering_is_global is set, the VLAN awareness state
428 * should be retrieved from here and not from the per-port settings.
430 u32 vlan_filtering:1;
432 /* For switches that only have the MRU configurable. To ensure the
433 * configured MTU is not exceeded, normalization of MRU on all bridged
434 * interfaces is needed.
436 u32 mtu_enforcement_ingress:1;
438 /* Drivers that isolate the FDBs of multiple bridges must set this
439 * to true to receive the bridge as an argument in .port_fdb_{add,del}
440 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be
445 /* Listener for switch fabric events */
446 struct notifier_block nb;
449 * Give the switch driver somewhere to hang its private data
457 * Configuration data for this switch.
459 struct dsa_chip_data *cd;
462 * The switch operations.
464 const struct dsa_switch_ops *ops;
467 * Slave mii_bus and devices for the individual ports.
470 struct mii_bus *slave_mii_bus;
472 /* Ageing Time limits in msecs */
473 unsigned int ageing_time_min;
474 unsigned int ageing_time_max;
476 /* Storage for drivers using tag_8021q */
477 struct dsa_8021q_context *tag_8021q_ctx;
479 /* devlink used to represent this switch device */
480 struct devlink *devlink;
482 /* Number of switch port queues */
483 unsigned int num_tx_queues;
485 /* Drivers that benefit from having an ID associated with each
486 * offloaded LAG should set this to the maximum number of
487 * supported IDs. DSA will then maintain a mapping of _at
488 * least_ these many IDs, accessible to drivers via
491 unsigned int num_lag_ids;
493 /* Drivers that support bridge forwarding offload or FDB isolation
494 * should set this to the maximum number of bridges spanning the same
495 * switch tree (or all trees, in the case of cross-tree bridging
496 * support) that can be offloaded.
498 unsigned int max_num_bridges;
500 unsigned int num_ports;
503 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
505 struct dsa_switch_tree *dst = ds->dst;
508 list_for_each_entry(dp, &dst->ports, list)
509 if (dp->ds == ds && dp->index == p)
515 static inline bool dsa_port_is_dsa(struct dsa_port *port)
517 return port->type == DSA_PORT_TYPE_DSA;
520 static inline bool dsa_port_is_cpu(struct dsa_port *port)
522 return port->type == DSA_PORT_TYPE_CPU;
525 static inline bool dsa_port_is_user(struct dsa_port *dp)
527 return dp->type == DSA_PORT_TYPE_USER;
530 static inline bool dsa_port_is_unused(struct dsa_port *dp)
532 return dp->type == DSA_PORT_TYPE_UNUSED;
535 static inline bool dsa_port_master_is_operational(struct dsa_port *dp)
537 return dsa_port_is_cpu(dp) && dp->master_admin_up &&
541 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
543 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
546 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
548 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
551 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
553 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
556 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
558 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
561 #define dsa_tree_for_each_user_port(_dp, _dst) \
562 list_for_each_entry((_dp), &(_dst)->ports, list) \
563 if (dsa_port_is_user((_dp)))
565 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \
566 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \
567 if (dsa_port_is_user((_dp)))
569 #define dsa_tree_for_each_cpu_port(_dp, _dst) \
570 list_for_each_entry((_dp), &(_dst)->ports, list) \
571 if (dsa_port_is_cpu((_dp)))
573 #define dsa_switch_for_each_port(_dp, _ds) \
574 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \
575 if ((_dp)->ds == (_ds))
577 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \
578 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \
579 if ((_dp)->ds == (_ds))
581 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \
582 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \
583 if ((_dp)->ds == (_ds))
585 #define dsa_switch_for_each_available_port(_dp, _ds) \
586 dsa_switch_for_each_port((_dp), (_ds)) \
587 if (!dsa_port_is_unused((_dp)))
589 #define dsa_switch_for_each_user_port(_dp, _ds) \
590 dsa_switch_for_each_port((_dp), (_ds)) \
591 if (dsa_port_is_user((_dp)))
593 #define dsa_switch_for_each_cpu_port(_dp, _ds) \
594 dsa_switch_for_each_port((_dp), (_ds)) \
595 if (dsa_port_is_cpu((_dp)))
597 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \
598 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \
599 if (dsa_port_is_cpu((_dp)))
601 static inline u32 dsa_user_ports(struct dsa_switch *ds)
606 dsa_switch_for_each_user_port(dp, ds)
607 mask |= BIT(dp->index);
612 static inline u32 dsa_cpu_ports(struct dsa_switch *ds)
614 struct dsa_port *cpu_dp;
617 dsa_switch_for_each_cpu_port(cpu_dp, ds)
618 mask |= BIT(cpu_dp->index);
623 /* Return the local port used to reach an arbitrary switch device */
624 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device)
626 struct dsa_switch_tree *dst = ds->dst;
629 list_for_each_entry(dl, &dst->rtable, list)
630 if (dl->dp->ds == ds && dl->link_dp->ds->index == device)
631 return dl->dp->index;
633 return ds->num_ports;
636 /* Return the local port used to reach an arbitrary switch port */
637 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
640 if (device == ds->index)
643 return dsa_routing_port(ds, device);
646 /* Return the local port used to reach the dedicated CPU port */
647 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
649 const struct dsa_port *dp = dsa_to_port(ds, port);
650 const struct dsa_port *cpu_dp = dp->cpu_dp;
655 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
658 /* Return true if this is the local port used to reach the CPU port */
659 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
661 if (dsa_is_unused_port(ds, port))
664 return port == dsa_upstream_port(ds, port);
667 /* Return true if this is a DSA port leading away from the CPU */
668 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port)
670 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port);
673 /* Return the local port used to reach the CPU port */
674 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds)
678 dsa_switch_for_each_available_port(dp, ds) {
679 return dsa_upstream_port(ds, dp->index);
682 return ds->num_ports;
685 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
686 * that the routing port from @downstream_ds to @upstream_ds is also the port
687 * which @downstream_ds uses to reach its dedicated CPU.
689 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
690 struct dsa_switch *downstream_ds)
694 if (upstream_ds == downstream_ds)
697 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
699 return dsa_is_upstream_port(downstream_ds, routing_port);
702 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
704 const struct dsa_switch *ds = dp->ds;
706 if (ds->vlan_filtering_is_global)
707 return ds->vlan_filtering;
709 return dp->vlan_filtering;
712 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp)
714 return dp->lag ? dp->lag->id : 0;
717 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp)
719 return dp->lag ? dp->lag->dev : NULL;
722 static inline bool dsa_port_offloads_lag(struct dsa_port *dp,
723 const struct dsa_lag *lag)
725 return dsa_port_lag_dev_get(dp) == lag->dev;
728 static inline struct net_device *dsa_port_to_master(const struct dsa_port *dp)
730 if (dp->cpu_port_in_lag)
731 return dsa_port_lag_dev_get(dp->cpu_dp);
733 return dp->cpu_dp->master;
737 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
744 else if (dp->hsr_dev)
750 static inline struct net_device *
751 dsa_port_bridge_dev_get(const struct dsa_port *dp)
753 return dp->bridge ? dp->bridge->dev : NULL;
756 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp)
758 return dp->bridge ? dp->bridge->num : 0;
761 static inline bool dsa_port_bridge_same(const struct dsa_port *a,
762 const struct dsa_port *b)
764 struct net_device *br_a = dsa_port_bridge_dev_get(a);
765 struct net_device *br_b = dsa_port_bridge_dev_get(b);
767 /* Standalone ports are not in the same bridge with one another */
768 return (!br_a || !br_b) ? false : (br_a == br_b);
771 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp,
772 const struct net_device *dev)
774 return dsa_port_to_bridge_port(dp) == dev;
778 dsa_port_offloads_bridge_dev(struct dsa_port *dp,
779 const struct net_device *bridge_dev)
781 /* DSA ports connected to a bridge, and event was emitted
784 return dsa_port_bridge_dev_get(dp) == bridge_dev;
787 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
788 const struct dsa_bridge *bridge)
790 return dsa_port_bridge_dev_get(dp) == bridge->dev;
793 /* Returns true if any port of this tree offloads the given net_device */
794 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst,
795 const struct net_device *dev)
799 list_for_each_entry(dp, &dst->ports, list)
800 if (dsa_port_offloads_bridge_port(dp, dev))
806 /* Returns true if any port of this tree offloads the given bridge */
808 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst,
809 const struct net_device *bridge_dev)
813 list_for_each_entry(dp, &dst->ports, list)
814 if (dsa_port_offloads_bridge_dev(dp, bridge_dev))
820 static inline bool dsa_port_tree_same(const struct dsa_port *a,
821 const struct dsa_port *b)
823 return a->ds->dst == b->ds->dst;
826 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
827 bool is_static, void *data);
828 struct dsa_switch_ops {
830 * Tagging protocol helpers called for the CPU ports and DSA links.
831 * @get_tag_protocol retrieves the initial tagging protocol and is
832 * mandatory. Switches which can operate using multiple tagging
833 * protocols should implement @change_tag_protocol and report in
834 * @get_tag_protocol the tagger in current use.
836 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
838 enum dsa_tag_protocol mprot);
839 int (*change_tag_protocol)(struct dsa_switch *ds,
840 enum dsa_tag_protocol proto);
842 * Method for switch drivers to connect to the tagging protocol driver
843 * in current use. The switch driver can provide handlers for certain
844 * types of packets for switch management.
846 int (*connect_tag_protocol)(struct dsa_switch *ds,
847 enum dsa_tag_protocol proto);
849 int (*port_change_master)(struct dsa_switch *ds, int port,
850 struct net_device *master,
851 struct netlink_ext_ack *extack);
853 /* Optional switch-wide initialization and destruction methods */
854 int (*setup)(struct dsa_switch *ds);
855 void (*teardown)(struct dsa_switch *ds);
857 /* Per-port initialization and destruction methods. Mandatory if the
858 * driver registers devlink port regions, optional otherwise.
860 int (*port_setup)(struct dsa_switch *ds, int port);
861 void (*port_teardown)(struct dsa_switch *ds, int port);
863 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
866 * Access to the switch's PHY registers.
868 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
869 int (*phy_write)(struct dsa_switch *ds, int port,
870 int regnum, u16 val);
873 * Link state adjustment (called from libphy)
875 void (*adjust_link)(struct dsa_switch *ds, int port,
876 struct phy_device *phydev);
877 void (*fixed_link_update)(struct dsa_switch *ds, int port,
878 struct fixed_phy_status *st);
881 * PHYLINK integration
883 void (*phylink_get_caps)(struct dsa_switch *ds, int port,
884 struct phylink_config *config);
885 void (*phylink_validate)(struct dsa_switch *ds, int port,
886 unsigned long *supported,
887 struct phylink_link_state *state);
888 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds,
890 phy_interface_t iface);
891 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port,
892 struct phylink_link_state *state);
893 void (*phylink_mac_config)(struct dsa_switch *ds, int port,
895 const struct phylink_link_state *state);
896 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port);
897 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port,
899 phy_interface_t interface);
900 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port,
902 phy_interface_t interface,
903 struct phy_device *phydev,
904 int speed, int duplex,
905 bool tx_pause, bool rx_pause);
906 void (*phylink_fixed_state)(struct dsa_switch *ds, int port,
907 struct phylink_link_state *state);
909 * Port statistics counters.
911 void (*get_strings)(struct dsa_switch *ds, int port,
912 u32 stringset, uint8_t *data);
913 void (*get_ethtool_stats)(struct dsa_switch *ds,
914 int port, uint64_t *data);
915 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset);
916 void (*get_ethtool_phy_stats)(struct dsa_switch *ds,
917 int port, uint64_t *data);
918 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port,
919 struct ethtool_eth_phy_stats *phy_stats);
920 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port,
921 struct ethtool_eth_mac_stats *mac_stats);
922 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port,
923 struct ethtool_eth_ctrl_stats *ctrl_stats);
924 void (*get_rmon_stats)(struct dsa_switch *ds, int port,
925 struct ethtool_rmon_stats *rmon_stats,
926 const struct ethtool_rmon_hist_range **ranges);
927 void (*get_stats64)(struct dsa_switch *ds, int port,
928 struct rtnl_link_stats64 *s);
929 void (*get_pause_stats)(struct dsa_switch *ds, int port,
930 struct ethtool_pause_stats *pause_stats);
931 void (*self_test)(struct dsa_switch *ds, int port,
932 struct ethtool_test *etest, u64 *data);
935 * ethtool Wake-on-LAN
937 void (*get_wol)(struct dsa_switch *ds, int port,
938 struct ethtool_wolinfo *w);
939 int (*set_wol)(struct dsa_switch *ds, int port,
940 struct ethtool_wolinfo *w);
943 * ethtool timestamp info
945 int (*get_ts_info)(struct dsa_switch *ds, int port,
946 struct ethtool_ts_info *ts);
951 int (*port_get_default_prio)(struct dsa_switch *ds, int port);
952 int (*port_set_default_prio)(struct dsa_switch *ds, int port,
954 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp);
955 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
957 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp,
963 int (*suspend)(struct dsa_switch *ds);
964 int (*resume)(struct dsa_switch *ds);
967 * Port enable/disable
969 int (*port_enable)(struct dsa_switch *ds, int port,
970 struct phy_device *phy);
971 void (*port_disable)(struct dsa_switch *ds, int port);
974 * Port's MAC EEE settings
976 int (*set_mac_eee)(struct dsa_switch *ds, int port,
977 struct ethtool_eee *e);
978 int (*get_mac_eee)(struct dsa_switch *ds, int port,
979 struct ethtool_eee *e);
982 int (*get_eeprom_len)(struct dsa_switch *ds);
983 int (*get_eeprom)(struct dsa_switch *ds,
984 struct ethtool_eeprom *eeprom, u8 *data);
985 int (*set_eeprom)(struct dsa_switch *ds,
986 struct ethtool_eeprom *eeprom, u8 *data);
991 int (*get_regs_len)(struct dsa_switch *ds, int port);
992 void (*get_regs)(struct dsa_switch *ds, int port,
993 struct ethtool_regs *regs, void *p);
996 * Upper device tracking.
998 int (*port_prechangeupper)(struct dsa_switch *ds, int port,
999 struct netdev_notifier_changeupper_info *info);
1002 * Bridge integration
1004 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
1005 int (*port_bridge_join)(struct dsa_switch *ds, int port,
1006 struct dsa_bridge bridge,
1007 bool *tx_fwd_offload,
1008 struct netlink_ext_ack *extack);
1009 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
1010 struct dsa_bridge bridge);
1011 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
1013 int (*port_mst_state_set)(struct dsa_switch *ds, int port,
1014 const struct switchdev_mst_state *state);
1015 void (*port_fast_age)(struct dsa_switch *ds, int port);
1016 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid);
1017 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port,
1018 struct switchdev_brport_flags flags,
1019 struct netlink_ext_ack *extack);
1020 int (*port_bridge_flags)(struct dsa_switch *ds, int port,
1021 struct switchdev_brport_flags flags,
1022 struct netlink_ext_ack *extack);
1023 void (*port_set_host_flood)(struct dsa_switch *ds, int port,
1029 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
1030 bool vlan_filtering,
1031 struct netlink_ext_ack *extack);
1032 int (*port_vlan_add)(struct dsa_switch *ds, int port,
1033 const struct switchdev_obj_port_vlan *vlan,
1034 struct netlink_ext_ack *extack);
1035 int (*port_vlan_del)(struct dsa_switch *ds, int port,
1036 const struct switchdev_obj_port_vlan *vlan);
1037 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge,
1038 const struct switchdev_vlan_msti *msti);
1041 * Forwarding database
1043 int (*port_fdb_add)(struct dsa_switch *ds, int port,
1044 const unsigned char *addr, u16 vid,
1046 int (*port_fdb_del)(struct dsa_switch *ds, int port,
1047 const unsigned char *addr, u16 vid,
1049 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
1050 dsa_fdb_dump_cb_t *cb, void *data);
1051 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag,
1052 const unsigned char *addr, u16 vid,
1054 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag,
1055 const unsigned char *addr, u16 vid,
1059 * Multicast database
1061 int (*port_mdb_add)(struct dsa_switch *ds, int port,
1062 const struct switchdev_obj_port_mdb *mdb,
1064 int (*port_mdb_del)(struct dsa_switch *ds, int port,
1065 const struct switchdev_obj_port_mdb *mdb,
1070 int (*get_rxnfc)(struct dsa_switch *ds, int port,
1071 struct ethtool_rxnfc *nfc, u32 *rule_locs);
1072 int (*set_rxnfc)(struct dsa_switch *ds, int port,
1073 struct ethtool_rxnfc *nfc);
1078 int (*cls_flower_add)(struct dsa_switch *ds, int port,
1079 struct flow_cls_offload *cls, bool ingress);
1080 int (*cls_flower_del)(struct dsa_switch *ds, int port,
1081 struct flow_cls_offload *cls, bool ingress);
1082 int (*cls_flower_stats)(struct dsa_switch *ds, int port,
1083 struct flow_cls_offload *cls, bool ingress);
1084 int (*port_mirror_add)(struct dsa_switch *ds, int port,
1085 struct dsa_mall_mirror_tc_entry *mirror,
1086 bool ingress, struct netlink_ext_ack *extack);
1087 void (*port_mirror_del)(struct dsa_switch *ds, int port,
1088 struct dsa_mall_mirror_tc_entry *mirror);
1089 int (*port_policer_add)(struct dsa_switch *ds, int port,
1090 struct dsa_mall_policer_tc_entry *policer);
1091 void (*port_policer_del)(struct dsa_switch *ds, int port);
1092 int (*port_setup_tc)(struct dsa_switch *ds, int port,
1093 enum tc_setup_type type, void *type_data);
1096 * Cross-chip operations
1098 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index,
1099 int sw_index, int port,
1100 struct dsa_bridge bridge,
1101 struct netlink_ext_ack *extack);
1102 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index,
1103 int sw_index, int port,
1104 struct dsa_bridge bridge);
1105 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index,
1107 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index,
1108 int port, struct dsa_lag lag,
1109 struct netdev_lag_upper_info *info,
1110 struct netlink_ext_ack *extack);
1111 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index,
1112 int port, struct dsa_lag lag);
1117 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
1119 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
1121 void (*port_txtstamp)(struct dsa_switch *ds, int port,
1122 struct sk_buff *skb);
1123 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
1124 struct sk_buff *skb, unsigned int type);
1126 /* Devlink parameters, etc */
1127 int (*devlink_param_get)(struct dsa_switch *ds, u32 id,
1128 struct devlink_param_gset_ctx *ctx);
1129 int (*devlink_param_set)(struct dsa_switch *ds, u32 id,
1130 struct devlink_param_gset_ctx *ctx);
1131 int (*devlink_info_get)(struct dsa_switch *ds,
1132 struct devlink_info_req *req,
1133 struct netlink_ext_ack *extack);
1134 int (*devlink_sb_pool_get)(struct dsa_switch *ds,
1135 unsigned int sb_index, u16 pool_index,
1136 struct devlink_sb_pool_info *pool_info);
1137 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index,
1138 u16 pool_index, u32 size,
1139 enum devlink_sb_threshold_type threshold_type,
1140 struct netlink_ext_ack *extack);
1141 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port,
1142 unsigned int sb_index, u16 pool_index,
1144 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port,
1145 unsigned int sb_index, u16 pool_index,
1147 struct netlink_ext_ack *extack);
1148 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port,
1149 unsigned int sb_index, u16 tc_index,
1150 enum devlink_sb_pool_type pool_type,
1151 u16 *p_pool_index, u32 *p_threshold);
1152 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port,
1153 unsigned int sb_index, u16 tc_index,
1154 enum devlink_sb_pool_type pool_type,
1155 u16 pool_index, u32 threshold,
1156 struct netlink_ext_ack *extack);
1157 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds,
1158 unsigned int sb_index);
1159 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds,
1160 unsigned int sb_index);
1161 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port,
1162 unsigned int sb_index, u16 pool_index,
1163 u32 *p_cur, u32 *p_max);
1164 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port,
1165 unsigned int sb_index, u16 tc_index,
1166 enum devlink_sb_pool_type pool_type,
1167 u32 *p_cur, u32 *p_max);
1170 * MTU change functionality. Switches can also adjust their MRU through
1171 * this method. By MTU, one understands the SDU (L2 payload) length.
1172 * If the switch needs to account for the DSA tag on the CPU port, this
1173 * method needs to do so privately.
1175 int (*port_change_mtu)(struct dsa_switch *ds, int port,
1177 int (*port_max_mtu)(struct dsa_switch *ds, int port);
1182 int (*port_lag_change)(struct dsa_switch *ds, int port);
1183 int (*port_lag_join)(struct dsa_switch *ds, int port,
1185 struct netdev_lag_upper_info *info,
1186 struct netlink_ext_ack *extack);
1187 int (*port_lag_leave)(struct dsa_switch *ds, int port,
1188 struct dsa_lag lag);
1193 int (*port_hsr_join)(struct dsa_switch *ds, int port,
1194 struct net_device *hsr);
1195 int (*port_hsr_leave)(struct dsa_switch *ds, int port,
1196 struct net_device *hsr);
1201 int (*port_mrp_add)(struct dsa_switch *ds, int port,
1202 const struct switchdev_obj_mrp *mrp);
1203 int (*port_mrp_del)(struct dsa_switch *ds, int port,
1204 const struct switchdev_obj_mrp *mrp);
1205 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port,
1206 const struct switchdev_obj_ring_role_mrp *mrp);
1207 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
1208 const struct switchdev_obj_ring_role_mrp *mrp);
1211 * tag_8021q operations
1213 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
1215 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
1218 * DSA master tracking operations
1220 void (*master_state_change)(struct dsa_switch *ds,
1221 const struct net_device *master,
1225 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \
1226 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \
1227 dsa_devlink_param_get, dsa_devlink_param_set, NULL)
1229 int dsa_devlink_param_get(struct devlink *dl, u32 id,
1230 struct devlink_param_gset_ctx *ctx);
1231 int dsa_devlink_param_set(struct devlink *dl, u32 id,
1232 struct devlink_param_gset_ctx *ctx);
1233 int dsa_devlink_params_register(struct dsa_switch *ds,
1234 const struct devlink_param *params,
1235 size_t params_count);
1236 void dsa_devlink_params_unregister(struct dsa_switch *ds,
1237 const struct devlink_param *params,
1238 size_t params_count);
1239 int dsa_devlink_resource_register(struct dsa_switch *ds,
1240 const char *resource_name,
1243 u64 parent_resource_id,
1244 const struct devlink_resource_size_params *size_params);
1246 void dsa_devlink_resources_unregister(struct dsa_switch *ds);
1248 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds,
1250 devlink_resource_occ_get_t *occ_get,
1251 void *occ_get_priv);
1252 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds,
1254 struct devlink_region *
1255 dsa_devlink_region_create(struct dsa_switch *ds,
1256 const struct devlink_region_ops *ops,
1257 u32 region_max_snapshots, u64 region_size);
1258 struct devlink_region *
1259 dsa_devlink_port_region_create(struct dsa_switch *ds,
1261 const struct devlink_port_region_ops *ops,
1262 u32 region_max_snapshots, u64 region_size);
1263 void dsa_devlink_region_destroy(struct devlink_region *region);
1265 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
1267 struct dsa_devlink_priv {
1268 struct dsa_switch *ds;
1271 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl)
1273 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1279 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port)
1281 struct devlink *dl = port->devlink;
1282 struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
1287 static inline int dsa_devlink_port_to_port(struct devlink_port *port)
1292 struct dsa_switch_driver {
1293 struct list_head list;
1294 const struct dsa_switch_ops *ops;
1297 struct net_device *dsa_dev_to_net_device(struct device *dev);
1299 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port,
1300 const unsigned char *addr, u16 vid,
1302 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port,
1303 const struct switchdev_obj_port_mdb *mdb,
1306 /* Keep inline for faster access in hot path */
1307 static inline bool netdev_uses_dsa(const struct net_device *dev)
1309 #if IS_ENABLED(CONFIG_NET_DSA)
1310 return dev->dsa_ptr && dev->dsa_ptr->rcv;
1315 /* All DSA tags that push the EtherType to the right (basically all except tail
1316 * tags, which don't break dissection) can be treated the same from the
1317 * perspective of the flow dissector.
1319 * We need to return:
1320 * - offset: the (B - A) difference between:
1321 * A. the position of the real EtherType and
1322 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes
1323 * after the normal EtherType was supposed to be)
1324 * The offset in bytes is exactly equal to the tagger overhead (and half of
1325 * that, in __be16 shorts).
1327 * - proto: the value of the real EtherType.
1329 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb,
1330 __be16 *proto, int *offset)
1332 #if IS_ENABLED(CONFIG_NET_DSA)
1333 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops;
1334 int tag_len = ops->needed_headroom;
1337 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];
1341 #if IS_ENABLED(CONFIG_NET_DSA)
1342 static inline int __dsa_netdevice_ops_check(struct net_device *dev)
1344 int err = -EOPNOTSUPP;
1349 if (!dev->dsa_ptr->netdev_ops)
1355 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr,
1358 const struct dsa_netdevice_ops *ops;
1361 err = __dsa_netdevice_ops_check(dev);
1365 ops = dev->dsa_ptr->netdev_ops;
1367 return ops->ndo_eth_ioctl(dev, ifr, cmd);
1370 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr,
1377 void dsa_unregister_switch(struct dsa_switch *ds);
1378 int dsa_register_switch(struct dsa_switch *ds);
1379 void dsa_switch_shutdown(struct dsa_switch *ds);
1380 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
1381 void dsa_flush_workqueue(void);
1382 #ifdef CONFIG_PM_SLEEP
1383 int dsa_switch_suspend(struct dsa_switch *ds);
1384 int dsa_switch_resume(struct dsa_switch *ds);
1386 static inline int dsa_switch_suspend(struct dsa_switch *ds)
1390 static inline int dsa_switch_resume(struct dsa_switch *ds)
1394 #endif /* CONFIG_PM_SLEEP */
1396 #if IS_ENABLED(CONFIG_NET_DSA)
1397 bool dsa_slave_dev_check(const struct net_device *dev);
1399 static inline bool dsa_slave_dev_check(const struct net_device *dev)
1405 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);
1406 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);
1408 struct dsa_tag_driver {
1409 const struct dsa_device_ops *ops;
1410 struct list_head list;
1411 struct module *owner;
1414 void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[],
1416 struct module *owner);
1417 void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[],
1418 unsigned int count);
1420 #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \
1421 static int __init dsa_tag_driver_module_init(void) \
1423 dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \
1427 module_init(dsa_tag_driver_module_init); \
1429 static void __exit dsa_tag_driver_module_exit(void) \
1431 dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \
1433 module_exit(dsa_tag_driver_module_exit)
1436 * module_dsa_tag_drivers() - Helper macro for registering DSA tag
1438 * @__ops_array: Array of tag driver structures
1440 * Helper macro for DSA tag drivers which do not do anything special
1441 * in module init/exit. Each module may only use this macro once, and
1442 * calling it replaces module_init() and module_exit().
1444 #define module_dsa_tag_drivers(__ops_array) \
1445 dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array))
1447 #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops
1449 /* Create a static structure we can build a linked list of dsa_tag
1452 #define DSA_TAG_DRIVER(__ops) \
1453 static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \
1458 * module_dsa_tag_driver() - Helper macro for registering a single DSA tag
1460 * @__ops: Single tag driver structures
1462 * Helper macro for DSA tag drivers which do not do anything special
1463 * in module init/exit. Each module may only use this macro once, and
1464 * calling it replaces module_init() and module_exit().
1466 #define module_dsa_tag_driver(__ops) \
1467 DSA_TAG_DRIVER(__ops); \
1469 static struct dsa_tag_driver *dsa_tag_driver_array[] = { \
1470 &DSA_TAG_DRIVER_NAME(__ops) \
1472 module_dsa_tag_drivers(dsa_tag_driver_array)