1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips 4 * Copyright (c) 2008-2009 Marvell Semiconductor 5 */ 6 7#ifndef __LINUX_NET_DSA_H 8#define __LINUX_NET_DSA_H 9 10#include <linux/if.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> 16#include <linux/of.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> 24 25struct dsa_8021q_context; 26struct tc_action; 27struct phy_device; 28struct fixed_phy_status; 29struct phylink_link_state; 30 31#define DSA_TAG_PROTO_NONE_VALUE 0 32#define DSA_TAG_PROTO_BRCM_VALUE 1 33#define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 34#define DSA_TAG_PROTO_DSA_VALUE 3 35#define DSA_TAG_PROTO_EDSA_VALUE 4 36#define DSA_TAG_PROTO_GSWIP_VALUE 5 37#define DSA_TAG_PROTO_KSZ9477_VALUE 6 38#define DSA_TAG_PROTO_KSZ9893_VALUE 7 39#define DSA_TAG_PROTO_LAN9303_VALUE 8 40#define DSA_TAG_PROTO_MTK_VALUE 9 41#define DSA_TAG_PROTO_QCA_VALUE 10 42#define DSA_TAG_PROTO_TRAILER_VALUE 11 43#define DSA_TAG_PROTO_8021Q_VALUE 12 44#define DSA_TAG_PROTO_SJA1105_VALUE 13 45#define DSA_TAG_PROTO_KSZ8795_VALUE 14 46#define DSA_TAG_PROTO_OCELOT_VALUE 15 47#define DSA_TAG_PROTO_AR9331_VALUE 16 48#define DSA_TAG_PROTO_RTL4_A_VALUE 17 49#define DSA_TAG_PROTO_HELLCREEK_VALUE 18 50#define DSA_TAG_PROTO_XRS700X_VALUE 19 51#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 52#define DSA_TAG_PROTO_SEVILLE_VALUE 21 53#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 54#define DSA_TAG_PROTO_SJA1110_VALUE 23 55#define DSA_TAG_PROTO_RTL8_4_VALUE 24 56#define DSA_TAG_PROTO_RTL8_4T_VALUE 25 57#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26 58#define DSA_TAG_PROTO_LAN937X_VALUE 27 59 60enum dsa_tag_protocol { 61 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 62 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 63 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 64 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 65 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 66 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 67 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 68 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 69 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 70 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 71 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 72 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 73 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 74 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 75 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 76 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 77 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 78 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 79 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 80 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 81 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 82 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 83 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 84 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 85 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 86 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 87 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 88 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 89}; 90 91struct dsa_switch; 92 93struct dsa_device_ops { 94 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 95 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 96 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 97 int *offset); 98 int (*connect)(struct dsa_switch *ds); 99 void (*disconnect)(struct dsa_switch *ds); 100 unsigned int needed_headroom; 101 unsigned int needed_tailroom; 102 const char *name; 103 enum dsa_tag_protocol proto; 104 /* Some tagging protocols either mangle or shift the destination MAC 105 * address, in which case the DSA conduit would drop packets on ingress 106 * if what it understands out of the destination MAC address is not in 107 * its RX filter. 108 */ 109 bool promisc_on_conduit; 110}; 111 112struct dsa_lag { 113 struct net_device *dev; 114 unsigned int id; 115 struct mutex fdb_lock; 116 struct list_head fdbs; 117 refcount_t refcount; 118}; 119 120struct dsa_switch_tree { 121 struct list_head list; 122 123 /* List of switch ports */ 124 struct list_head ports; 125 126 /* Notifier chain for switch-wide events */ 127 struct raw_notifier_head nh; 128 129 /* Tree identifier */ 130 unsigned int index; 131 132 /* Number of switches attached to this tree */ 133 struct kref refcount; 134 135 /* Maps offloaded LAG netdevs to a zero-based linear ID for 136 * drivers that need it. 137 */ 138 struct dsa_lag **lags; 139 140 /* Tagging protocol operations */ 141 const struct dsa_device_ops *tag_ops; 142 143 /* Default tagging protocol preferred by the switches in this 144 * tree. 145 */ 146 enum dsa_tag_protocol default_proto; 147 148 /* Has this tree been applied to the hardware? */ 149 bool setup; 150 151 /* 152 * Configuration data for the platform device that owns 153 * this dsa switch tree instance. 154 */ 155 struct dsa_platform_data *pd; 156 157 /* List of DSA links composing the routing table */ 158 struct list_head rtable; 159 160 /* Length of "lags" array */ 161 unsigned int lags_len; 162 163 /* Track the largest switch index within a tree */ 164 unsigned int last_switch; 165}; 166 167/* LAG IDs are one-based, the dst->lags array is zero-based */ 168#define dsa_lags_foreach_id(_id, _dst) \ 169 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 170 if ((_dst)->lags[(_id) - 1]) 171 172#define dsa_lag_foreach_port(_dp, _dst, _lag) \ 173 list_for_each_entry((_dp), &(_dst)->ports, list) \ 174 if (dsa_port_offloads_lag((_dp), (_lag))) 175 176#define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 177 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 178 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 179 180static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 181 unsigned int id) 182{ 183 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 184 return dst->lags[id - 1]; 185} 186 187static inline int dsa_lag_id(struct dsa_switch_tree *dst, 188 struct net_device *lag_dev) 189{ 190 unsigned int id; 191 192 dsa_lags_foreach_id(id, dst) { 193 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 194 195 if (lag->dev == lag_dev) 196 return lag->id; 197 } 198 199 return -ENODEV; 200} 201 202/* TC matchall action types */ 203enum dsa_port_mall_action_type { 204 DSA_PORT_MALL_MIRROR, 205 DSA_PORT_MALL_POLICER, 206}; 207 208/* TC mirroring entry */ 209struct dsa_mall_mirror_tc_entry { 210 u8 to_local_port; 211 bool ingress; 212}; 213 214/* TC port policer entry */ 215struct dsa_mall_policer_tc_entry { 216 u32 burst; 217 u64 rate_bytes_per_sec; 218}; 219 220/* TC matchall entry */ 221struct dsa_mall_tc_entry { 222 struct list_head list; 223 unsigned long cookie; 224 enum dsa_port_mall_action_type type; 225 union { 226 struct dsa_mall_mirror_tc_entry mirror; 227 struct dsa_mall_policer_tc_entry policer; 228 }; 229}; 230 231struct dsa_bridge { 232 struct net_device *dev; 233 unsigned int num; 234 bool tx_fwd_offload; 235 refcount_t refcount; 236}; 237 238struct dsa_port { 239 /* A CPU port is physically connected to a conduit device. A user port 240 * exposes a network device to user-space, called 'user' here. 241 */ 242 union { 243 struct net_device *conduit; 244 struct net_device *user; 245 }; 246 247 /* Copy of the tagging protocol operations, for quicker access 248 * in the data path. Valid only for the CPU ports. 249 */ 250 const struct dsa_device_ops *tag_ops; 251 252 /* Copies for faster access in conduit receive hot path */ 253 struct dsa_switch_tree *dst; 254 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 255 256 struct dsa_switch *ds; 257 258 unsigned int index; 259 260 enum { 261 DSA_PORT_TYPE_UNUSED = 0, 262 DSA_PORT_TYPE_CPU, 263 DSA_PORT_TYPE_DSA, 264 DSA_PORT_TYPE_USER, 265 } type; 266 267 const char *name; 268 struct dsa_port *cpu_dp; 269 u8 mac[ETH_ALEN]; 270 271 u8 stp_state; 272 273 /* Warning: the following bit fields are not atomic, and updating them 274 * can only be done from code paths where concurrency is not possible 275 * (probe time or under rtnl_lock). 276 */ 277 u8 vlan_filtering:1; 278 279 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 280 u8 learning:1; 281 282 u8 lag_tx_enabled:1; 283 284 /* conduit state bits, valid only on CPU ports */ 285 u8 conduit_admin_up:1; 286 u8 conduit_oper_up:1; 287 288 /* Valid only on user ports */ 289 u8 cpu_port_in_lag:1; 290 291 u8 setup:1; 292 293 struct device_node *dn; 294 unsigned int ageing_time; 295 296 struct dsa_bridge *bridge; 297 struct devlink_port devlink_port; 298 struct phylink *pl; 299 struct phylink_config pl_config; 300 struct dsa_lag *lag; 301 struct net_device *hsr_dev; 302 303 struct list_head list; 304 305 /* 306 * Original copy of the conduit netdev ethtool_ops 307 */ 308 const struct ethtool_ops *orig_ethtool_ops; 309 310 /* List of MAC addresses that must be forwarded on this port. 311 * These are only valid on CPU ports and DSA links. 312 */ 313 struct mutex addr_lists_lock; 314 struct list_head fdbs; 315 struct list_head mdbs; 316 317 struct mutex vlans_lock; 318 union { 319 /* List of VLANs that CPU and DSA ports are members of. 320 * Access to this is serialized by the sleepable @vlans_lock. 321 */ 322 struct list_head vlans; 323 /* List of VLANs that user ports are members of. 324 * Access to this is serialized by netif_addr_lock_bh(). 325 */ 326 struct list_head user_vlans; 327 }; 328}; 329 330/* TODO: ideally DSA ports would have a single dp->link_dp member, 331 * and no dst->rtable nor this struct dsa_link would be needed, 332 * but this would require some more complex tree walking, 333 * so keep it stupid at the moment and list them all. 334 */ 335struct dsa_link { 336 struct dsa_port *dp; 337 struct dsa_port *link_dp; 338 struct list_head list; 339}; 340 341enum dsa_db_type { 342 DSA_DB_PORT, 343 DSA_DB_LAG, 344 DSA_DB_BRIDGE, 345}; 346 347struct dsa_db { 348 enum dsa_db_type type; 349 350 union { 351 const struct dsa_port *dp; 352 struct dsa_lag lag; 353 struct dsa_bridge bridge; 354 }; 355}; 356 357struct dsa_mac_addr { 358 unsigned char addr[ETH_ALEN]; 359 u16 vid; 360 refcount_t refcount; 361 struct list_head list; 362 struct dsa_db db; 363}; 364 365struct dsa_vlan { 366 u16 vid; 367 refcount_t refcount; 368 struct list_head list; 369}; 370 371struct dsa_switch { 372 struct device *dev; 373 374 /* 375 * Parent switch tree, and switch index. 376 */ 377 struct dsa_switch_tree *dst; 378 unsigned int index; 379 380 /* Warning: the following bit fields are not atomic, and updating them 381 * can only be done from code paths where concurrency is not possible 382 * (probe time or under rtnl_lock). 383 */ 384 u32 setup:1; 385 386 /* Disallow bridge core from requesting different VLAN awareness 387 * settings on ports if not hardware-supported 388 */ 389 u32 vlan_filtering_is_global:1; 390 391 /* Keep VLAN filtering enabled on ports not offloading any upper */ 392 u32 needs_standalone_vlan_filtering:1; 393 394 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 395 * that have vlan_filtering=0. All drivers should ideally set this (and 396 * then the option would get removed), but it is unknown whether this 397 * would break things or not. 398 */ 399 u32 configure_vlan_while_not_filtering:1; 400 401 /* If the switch driver always programs the CPU port as egress tagged 402 * despite the VLAN configuration indicating otherwise, then setting 403 * @untag_bridge_pvid will force the DSA receive path to pop the 404 * bridge's default_pvid VLAN tagged frames to offer a consistent 405 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge 406 * device. 407 */ 408 u32 untag_bridge_pvid:1; 409 410 /* Let DSA manage the FDB entries towards the 411 * CPU, based on the software bridge database. 412 */ 413 u32 assisted_learning_on_cpu_port:1; 414 415 /* In case vlan_filtering_is_global is set, the VLAN awareness state 416 * should be retrieved from here and not from the per-port settings. 417 */ 418 u32 vlan_filtering:1; 419 420 /* For switches that only have the MRU configurable. To ensure the 421 * configured MTU is not exceeded, normalization of MRU on all bridged 422 * interfaces is needed. 423 */ 424 u32 mtu_enforcement_ingress:1; 425 426 /* Drivers that isolate the FDBs of multiple bridges must set this 427 * to true to receive the bridge as an argument in .port_fdb_{add,del} 428 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 429 * passed as zero. 430 */ 431 u32 fdb_isolation:1; 432 433 /* Listener for switch fabric events */ 434 struct notifier_block nb; 435 436 /* 437 * Give the switch driver somewhere to hang its private data 438 * structure. 439 */ 440 void *priv; 441 442 void *tagger_data; 443 444 /* 445 * Configuration data for this switch. 446 */ 447 struct dsa_chip_data *cd; 448 449 /* 450 * The switch operations. 451 */ 452 const struct dsa_switch_ops *ops; 453 454 /* 455 * User mii_bus and devices for the individual ports. 456 */ 457 u32 phys_mii_mask; 458 struct mii_bus *user_mii_bus; 459 460 /* Ageing Time limits in msecs */ 461 unsigned int ageing_time_min; 462 unsigned int ageing_time_max; 463 464 /* Storage for drivers using tag_8021q */ 465 struct dsa_8021q_context *tag_8021q_ctx; 466 467 /* devlink used to represent this switch device */ 468 struct devlink *devlink; 469 470 /* Number of switch port queues */ 471 unsigned int num_tx_queues; 472 473 /* Drivers that benefit from having an ID associated with each 474 * offloaded LAG should set this to the maximum number of 475 * supported IDs. DSA will then maintain a mapping of _at 476 * least_ these many IDs, accessible to drivers via 477 * dsa_lag_id(). 478 */ 479 unsigned int num_lag_ids; 480 481 /* Drivers that support bridge forwarding offload or FDB isolation 482 * should set this to the maximum number of bridges spanning the same 483 * switch tree (or all trees, in the case of cross-tree bridging 484 * support) that can be offloaded. 485 */ 486 unsigned int max_num_bridges; 487 488 unsigned int num_ports; 489}; 490 491static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 492{ 493 struct dsa_switch_tree *dst = ds->dst; 494 struct dsa_port *dp; 495 496 list_for_each_entry(dp, &dst->ports, list) 497 if (dp->ds == ds && dp->index == p) 498 return dp; 499 500 return NULL; 501} 502 503static inline bool dsa_port_is_dsa(struct dsa_port *port) 504{ 505 return port->type == DSA_PORT_TYPE_DSA; 506} 507 508static inline bool dsa_port_is_cpu(struct dsa_port *port) 509{ 510 return port->type == DSA_PORT_TYPE_CPU; 511} 512 513static inline bool dsa_port_is_user(struct dsa_port *dp) 514{ 515 return dp->type == DSA_PORT_TYPE_USER; 516} 517 518static inline bool dsa_port_is_unused(struct dsa_port *dp) 519{ 520 return dp->type == DSA_PORT_TYPE_UNUSED; 521} 522 523static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 524{ 525 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 526 dp->conduit_oper_up; 527} 528 529static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 530{ 531 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 532} 533 534static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 535{ 536 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 537} 538 539static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 540{ 541 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 542} 543 544static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 545{ 546 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 547} 548 549#define dsa_tree_for_each_user_port(_dp, _dst) \ 550 list_for_each_entry((_dp), &(_dst)->ports, list) \ 551 if (dsa_port_is_user((_dp))) 552 553#define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 554 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 555 if (dsa_port_is_user((_dp))) 556 557#define dsa_tree_for_each_cpu_port(_dp, _dst) \ 558 list_for_each_entry((_dp), &(_dst)->ports, list) \ 559 if (dsa_port_is_cpu((_dp))) 560 561#define dsa_switch_for_each_port(_dp, _ds) \ 562 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 563 if ((_dp)->ds == (_ds)) 564 565#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 566 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 567 if ((_dp)->ds == (_ds)) 568 569#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 570 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 571 if ((_dp)->ds == (_ds)) 572 573#define dsa_switch_for_each_available_port(_dp, _ds) \ 574 dsa_switch_for_each_port((_dp), (_ds)) \ 575 if (!dsa_port_is_unused((_dp))) 576 577#define dsa_switch_for_each_user_port(_dp, _ds) \ 578 dsa_switch_for_each_port((_dp), (_ds)) \ 579 if (dsa_port_is_user((_dp))) 580 581#define dsa_switch_for_each_cpu_port(_dp, _ds) \ 582 dsa_switch_for_each_port((_dp), (_ds)) \ 583 if (dsa_port_is_cpu((_dp))) 584 585#define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 586 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 587 if (dsa_port_is_cpu((_dp))) 588 589static inline u32 dsa_user_ports(struct dsa_switch *ds) 590{ 591 struct dsa_port *dp; 592 u32 mask = 0; 593 594 dsa_switch_for_each_user_port(dp, ds) 595 mask |= BIT(dp->index); 596 597 return mask; 598} 599 600static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 601{ 602 struct dsa_port *cpu_dp; 603 u32 mask = 0; 604 605 dsa_switch_for_each_cpu_port(cpu_dp, ds) 606 mask |= BIT(cpu_dp->index); 607 608 return mask; 609} 610 611/* Return the local port used to reach an arbitrary switch device */ 612static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 613{ 614 struct dsa_switch_tree *dst = ds->dst; 615 struct dsa_link *dl; 616 617 list_for_each_entry(dl, &dst->rtable, list) 618 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 619 return dl->dp->index; 620 621 return ds->num_ports; 622} 623 624/* Return the local port used to reach an arbitrary switch port */ 625static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 626 int port) 627{ 628 if (device == ds->index) 629 return port; 630 else 631 return dsa_routing_port(ds, device); 632} 633 634/* Return the local port used to reach the dedicated CPU port */ 635static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 636{ 637 const struct dsa_port *dp = dsa_to_port(ds, port); 638 const struct dsa_port *cpu_dp = dp->cpu_dp; 639 640 if (!cpu_dp) 641 return port; 642 643 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 644} 645 646/* Return true if this is the local port used to reach the CPU port */ 647static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 648{ 649 if (dsa_is_unused_port(ds, port)) 650 return false; 651 652 return port == dsa_upstream_port(ds, port); 653} 654 655/* Return true if this is a DSA port leading away from the CPU */ 656static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 657{ 658 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 659} 660 661/* Return the local port used to reach the CPU port */ 662static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 663{ 664 struct dsa_port *dp; 665 666 dsa_switch_for_each_available_port(dp, ds) { 667 return dsa_upstream_port(ds, dp->index); 668 } 669 670 return ds->num_ports; 671} 672 673/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 674 * that the routing port from @downstream_ds to @upstream_ds is also the port 675 * which @downstream_ds uses to reach its dedicated CPU. 676 */ 677static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 678 struct dsa_switch *downstream_ds) 679{ 680 int routing_port; 681 682 if (upstream_ds == downstream_ds) 683 return true; 684 685 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 686 687 return dsa_is_upstream_port(downstream_ds, routing_port); 688} 689 690static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 691{ 692 const struct dsa_switch *ds = dp->ds; 693 694 if (ds->vlan_filtering_is_global) 695 return ds->vlan_filtering; 696 else 697 return dp->vlan_filtering; 698} 699 700static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 701{ 702 return dp->lag ? dp->lag->id : 0; 703} 704 705static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 706{ 707 return dp->lag ? dp->lag->dev : NULL; 708} 709 710static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 711 const struct dsa_lag *lag) 712{ 713 return dsa_port_lag_dev_get(dp) == lag->dev; 714} 715 716static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 717{ 718 if (dp->cpu_port_in_lag) 719 return dsa_port_lag_dev_get(dp->cpu_dp); 720 721 return dp->cpu_dp->conduit; 722} 723 724static inline 725struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 726{ 727 if (!dp->bridge) 728 return NULL; 729 730 if (dp->lag) 731 return dp->lag->dev; 732 else if (dp->hsr_dev) 733 return dp->hsr_dev; 734 735 return dp->user; 736} 737 738static inline struct net_device * 739dsa_port_bridge_dev_get(const struct dsa_port *dp) 740{ 741 return dp->bridge ? dp->bridge->dev : NULL; 742} 743 744static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 745{ 746 return dp->bridge ? dp->bridge->num : 0; 747} 748 749static inline bool dsa_port_bridge_same(const struct dsa_port *a, 750 const struct dsa_port *b) 751{ 752 struct net_device *br_a = dsa_port_bridge_dev_get(a); 753 struct net_device *br_b = dsa_port_bridge_dev_get(b); 754 755 /* Standalone ports are not in the same bridge with one another */ 756 return (!br_a || !br_b) ? false : (br_a == br_b); 757} 758 759static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 760 const struct net_device *dev) 761{ 762 return dsa_port_to_bridge_port(dp) == dev; 763} 764 765static inline bool 766dsa_port_offloads_bridge_dev(struct dsa_port *dp, 767 const struct net_device *bridge_dev) 768{ 769 /* DSA ports connected to a bridge, and event was emitted 770 * for the bridge. 771 */ 772 return dsa_port_bridge_dev_get(dp) == bridge_dev; 773} 774 775static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 776 const struct dsa_bridge *bridge) 777{ 778 return dsa_port_bridge_dev_get(dp) == bridge->dev; 779} 780 781/* Returns true if any port of this tree offloads the given net_device */ 782static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 783 const struct net_device *dev) 784{ 785 struct dsa_port *dp; 786 787 list_for_each_entry(dp, &dst->ports, list) 788 if (dsa_port_offloads_bridge_port(dp, dev)) 789 return true; 790 791 return false; 792} 793 794/* Returns true if any port of this tree offloads the given bridge */ 795static inline bool 796dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 797 const struct net_device *bridge_dev) 798{ 799 struct dsa_port *dp; 800 801 list_for_each_entry(dp, &dst->ports, list) 802 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 803 return true; 804 805 return false; 806} 807 808static inline bool dsa_port_tree_same(const struct dsa_port *a, 809 const struct dsa_port *b) 810{ 811 return a->ds->dst == b->ds->dst; 812} 813 814typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 815 bool is_static, void *data); 816struct dsa_switch_ops { 817 /* 818 * Tagging protocol helpers called for the CPU ports and DSA links. 819 * @get_tag_protocol retrieves the initial tagging protocol and is 820 * mandatory. Switches which can operate using multiple tagging 821 * protocols should implement @change_tag_protocol and report in 822 * @get_tag_protocol the tagger in current use. 823 */ 824 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 825 int port, 826 enum dsa_tag_protocol mprot); 827 int (*change_tag_protocol)(struct dsa_switch *ds, 828 enum dsa_tag_protocol proto); 829 /* 830 * Method for switch drivers to connect to the tagging protocol driver 831 * in current use. The switch driver can provide handlers for certain 832 * types of packets for switch management. 833 */ 834 int (*connect_tag_protocol)(struct dsa_switch *ds, 835 enum dsa_tag_protocol proto); 836 837 int (*port_change_conduit)(struct dsa_switch *ds, int port, 838 struct net_device *conduit, 839 struct netlink_ext_ack *extack); 840 841 /* Optional switch-wide initialization and destruction methods */ 842 int (*setup)(struct dsa_switch *ds); 843 void (*teardown)(struct dsa_switch *ds); 844 845 /* Per-port initialization and destruction methods. Mandatory if the 846 * driver registers devlink port regions, optional otherwise. 847 */ 848 int (*port_setup)(struct dsa_switch *ds, int port); 849 void (*port_teardown)(struct dsa_switch *ds, int port); 850 851 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 852 853 /* 854 * Access to the switch's PHY registers. 855 */ 856 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 857 int (*phy_write)(struct dsa_switch *ds, int port, 858 int regnum, u16 val); 859 860 /* 861 * Link state adjustment (called from libphy) 862 */ 863 void (*adjust_link)(struct dsa_switch *ds, int port, 864 struct phy_device *phydev); 865 void (*fixed_link_update)(struct dsa_switch *ds, int port, 866 struct fixed_phy_status *st); 867 868 /* 869 * PHYLINK integration 870 */ 871 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 872 struct phylink_config *config); 873 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds, 874 int port, 875 phy_interface_t iface); 876 int (*phylink_mac_prepare)(struct dsa_switch *ds, int port, 877 unsigned int mode, 878 phy_interface_t interface); 879 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 880 unsigned int mode, 881 const struct phylink_link_state *state); 882 int (*phylink_mac_finish)(struct dsa_switch *ds, int port, 883 unsigned int mode, 884 phy_interface_t interface); 885 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 886 unsigned int mode, 887 phy_interface_t interface); 888 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 889 unsigned int mode, 890 phy_interface_t interface, 891 struct phy_device *phydev, 892 int speed, int duplex, 893 bool tx_pause, bool rx_pause); 894 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 895 struct phylink_link_state *state); 896 /* 897 * Port statistics counters. 898 */ 899 void (*get_strings)(struct dsa_switch *ds, int port, 900 u32 stringset, uint8_t *data); 901 void (*get_ethtool_stats)(struct dsa_switch *ds, 902 int port, uint64_t *data); 903 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 904 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 905 int port, uint64_t *data); 906 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 907 struct ethtool_eth_phy_stats *phy_stats); 908 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 909 struct ethtool_eth_mac_stats *mac_stats); 910 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 911 struct ethtool_eth_ctrl_stats *ctrl_stats); 912 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 913 struct ethtool_rmon_stats *rmon_stats, 914 const struct ethtool_rmon_hist_range **ranges); 915 void (*get_stats64)(struct dsa_switch *ds, int port, 916 struct rtnl_link_stats64 *s); 917 void (*get_pause_stats)(struct dsa_switch *ds, int port, 918 struct ethtool_pause_stats *pause_stats); 919 void (*self_test)(struct dsa_switch *ds, int port, 920 struct ethtool_test *etest, u64 *data); 921 922 /* 923 * ethtool Wake-on-LAN 924 */ 925 void (*get_wol)(struct dsa_switch *ds, int port, 926 struct ethtool_wolinfo *w); 927 int (*set_wol)(struct dsa_switch *ds, int port, 928 struct ethtool_wolinfo *w); 929 930 /* 931 * ethtool timestamp info 932 */ 933 int (*get_ts_info)(struct dsa_switch *ds, int port, 934 struct ethtool_ts_info *ts); 935 936 /* 937 * ethtool MAC merge layer 938 */ 939 int (*get_mm)(struct dsa_switch *ds, int port, 940 struct ethtool_mm_state *state); 941 int (*set_mm)(struct dsa_switch *ds, int port, 942 struct ethtool_mm_cfg *cfg, 943 struct netlink_ext_ack *extack); 944 void (*get_mm_stats)(struct dsa_switch *ds, int port, 945 struct ethtool_mm_stats *stats); 946 947 /* 948 * DCB ops 949 */ 950 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 951 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 952 u8 prio); 953 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 954 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 955 u8 prio); 956 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 957 u8 prio); 958 959 /* 960 * Suspend and resume 961 */ 962 int (*suspend)(struct dsa_switch *ds); 963 int (*resume)(struct dsa_switch *ds); 964 965 /* 966 * Port enable/disable 967 */ 968 int (*port_enable)(struct dsa_switch *ds, int port, 969 struct phy_device *phy); 970 void (*port_disable)(struct dsa_switch *ds, int port); 971 972 973 /* 974 * Notification for MAC address changes on user ports. Drivers can 975 * currently only veto operations. They should not use the method to 976 * program the hardware, since the operation is not rolled back in case 977 * of other errors. 978 */ 979 int (*port_set_mac_address)(struct dsa_switch *ds, int port, 980 const unsigned char *addr); 981 982 /* 983 * Compatibility between device trees defining multiple CPU ports and 984 * drivers which are not OK to use by default the numerically smallest 985 * CPU port of a switch for its local ports. This can return NULL, 986 * meaning "don't know/don't care". 987 */ 988 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds); 989 990 /* 991 * Port's MAC EEE settings 992 */ 993 int (*set_mac_eee)(struct dsa_switch *ds, int port, 994 struct ethtool_keee *e); 995 int (*get_mac_eee)(struct dsa_switch *ds, int port, 996 struct ethtool_keee *e); 997 998 /* EEPROM access */ 999 int (*get_eeprom_len)(struct dsa_switch *ds); 1000 int (*get_eeprom)(struct dsa_switch *ds, 1001 struct ethtool_eeprom *eeprom, u8 *data); 1002 int (*set_eeprom)(struct dsa_switch *ds, 1003 struct ethtool_eeprom *eeprom, u8 *data); 1004 1005 /* 1006 * Register access. 1007 */ 1008 int (*get_regs_len)(struct dsa_switch *ds, int port); 1009 void (*get_regs)(struct dsa_switch *ds, int port, 1010 struct ethtool_regs *regs, void *p); 1011 1012 /* 1013 * Upper device tracking. 1014 */ 1015 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 1016 struct netdev_notifier_changeupper_info *info); 1017 1018 /* 1019 * Bridge integration 1020 */ 1021 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 1022 int (*port_bridge_join)(struct dsa_switch *ds, int port, 1023 struct dsa_bridge bridge, 1024 bool *tx_fwd_offload, 1025 struct netlink_ext_ack *extack); 1026 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1027 struct dsa_bridge bridge); 1028 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1029 u8 state); 1030 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1031 const struct switchdev_mst_state *state); 1032 void (*port_fast_age)(struct dsa_switch *ds, int port); 1033 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1034 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1035 struct switchdev_brport_flags flags, 1036 struct netlink_ext_ack *extack); 1037 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1038 struct switchdev_brport_flags flags, 1039 struct netlink_ext_ack *extack); 1040 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1041 bool uc, bool mc); 1042 1043 /* 1044 * VLAN support 1045 */ 1046 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1047 bool vlan_filtering, 1048 struct netlink_ext_ack *extack); 1049 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1050 const struct switchdev_obj_port_vlan *vlan, 1051 struct netlink_ext_ack *extack); 1052 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1053 const struct switchdev_obj_port_vlan *vlan); 1054 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1055 const struct switchdev_vlan_msti *msti); 1056 1057 /* 1058 * Forwarding database 1059 */ 1060 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1061 const unsigned char *addr, u16 vid, 1062 struct dsa_db db); 1063 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1064 const unsigned char *addr, u16 vid, 1065 struct dsa_db db); 1066 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1067 dsa_fdb_dump_cb_t *cb, void *data); 1068 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1069 const unsigned char *addr, u16 vid, 1070 struct dsa_db db); 1071 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1072 const unsigned char *addr, u16 vid, 1073 struct dsa_db db); 1074 1075 /* 1076 * Multicast database 1077 */ 1078 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1079 const struct switchdev_obj_port_mdb *mdb, 1080 struct dsa_db db); 1081 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1082 const struct switchdev_obj_port_mdb *mdb, 1083 struct dsa_db db); 1084 /* 1085 * RXNFC 1086 */ 1087 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1088 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1089 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1090 struct ethtool_rxnfc *nfc); 1091 1092 /* 1093 * TC integration 1094 */ 1095 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1096 struct flow_cls_offload *cls, bool ingress); 1097 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1098 struct flow_cls_offload *cls, bool ingress); 1099 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1100 struct flow_cls_offload *cls, bool ingress); 1101 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1102 struct dsa_mall_mirror_tc_entry *mirror, 1103 bool ingress, struct netlink_ext_ack *extack); 1104 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1105 struct dsa_mall_mirror_tc_entry *mirror); 1106 int (*port_policer_add)(struct dsa_switch *ds, int port, 1107 struct dsa_mall_policer_tc_entry *policer); 1108 void (*port_policer_del)(struct dsa_switch *ds, int port); 1109 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1110 enum tc_setup_type type, void *type_data); 1111 1112 /* 1113 * Cross-chip operations 1114 */ 1115 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1116 int sw_index, int port, 1117 struct dsa_bridge bridge, 1118 struct netlink_ext_ack *extack); 1119 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1120 int sw_index, int port, 1121 struct dsa_bridge bridge); 1122 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1123 int port); 1124 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1125 int port, struct dsa_lag lag, 1126 struct netdev_lag_upper_info *info, 1127 struct netlink_ext_ack *extack); 1128 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1129 int port, struct dsa_lag lag); 1130 1131 /* 1132 * PTP functionality 1133 */ 1134 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1135 struct ifreq *ifr); 1136 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1137 struct ifreq *ifr); 1138 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1139 struct sk_buff *skb); 1140 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1141 struct sk_buff *skb, unsigned int type); 1142 1143 /* Devlink parameters, etc */ 1144 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1145 struct devlink_param_gset_ctx *ctx); 1146 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1147 struct devlink_param_gset_ctx *ctx); 1148 int (*devlink_info_get)(struct dsa_switch *ds, 1149 struct devlink_info_req *req, 1150 struct netlink_ext_ack *extack); 1151 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1152 unsigned int sb_index, u16 pool_index, 1153 struct devlink_sb_pool_info *pool_info); 1154 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1155 u16 pool_index, u32 size, 1156 enum devlink_sb_threshold_type threshold_type, 1157 struct netlink_ext_ack *extack); 1158 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1159 unsigned int sb_index, u16 pool_index, 1160 u32 *p_threshold); 1161 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1162 unsigned int sb_index, u16 pool_index, 1163 u32 threshold, 1164 struct netlink_ext_ack *extack); 1165 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1166 unsigned int sb_index, u16 tc_index, 1167 enum devlink_sb_pool_type pool_type, 1168 u16 *p_pool_index, u32 *p_threshold); 1169 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1170 unsigned int sb_index, u16 tc_index, 1171 enum devlink_sb_pool_type pool_type, 1172 u16 pool_index, u32 threshold, 1173 struct netlink_ext_ack *extack); 1174 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1175 unsigned int sb_index); 1176 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1177 unsigned int sb_index); 1178 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1179 unsigned int sb_index, u16 pool_index, 1180 u32 *p_cur, u32 *p_max); 1181 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1182 unsigned int sb_index, u16 tc_index, 1183 enum devlink_sb_pool_type pool_type, 1184 u32 *p_cur, u32 *p_max); 1185 1186 /* 1187 * MTU change functionality. Switches can also adjust their MRU through 1188 * this method. By MTU, one understands the SDU (L2 payload) length. 1189 * If the switch needs to account for the DSA tag on the CPU port, this 1190 * method needs to do so privately. 1191 */ 1192 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1193 int new_mtu); 1194 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1195 1196 /* 1197 * LAG integration 1198 */ 1199 int (*port_lag_change)(struct dsa_switch *ds, int port); 1200 int (*port_lag_join)(struct dsa_switch *ds, int port, 1201 struct dsa_lag lag, 1202 struct netdev_lag_upper_info *info, 1203 struct netlink_ext_ack *extack); 1204 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1205 struct dsa_lag lag); 1206 1207 /* 1208 * HSR integration 1209 */ 1210 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1211 struct net_device *hsr, 1212 struct netlink_ext_ack *extack); 1213 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1214 struct net_device *hsr); 1215 1216 /* 1217 * MRP integration 1218 */ 1219 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1220 const struct switchdev_obj_mrp *mrp); 1221 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1222 const struct switchdev_obj_mrp *mrp); 1223 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1224 const struct switchdev_obj_ring_role_mrp *mrp); 1225 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1226 const struct switchdev_obj_ring_role_mrp *mrp); 1227 1228 /* 1229 * tag_8021q operations 1230 */ 1231 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1232 u16 flags); 1233 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1234 1235 /* 1236 * DSA conduit tracking operations 1237 */ 1238 void (*conduit_state_change)(struct dsa_switch *ds, 1239 const struct net_device *conduit, 1240 bool operational); 1241}; 1242 1243#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1244 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1245 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1246 1247int dsa_devlink_param_get(struct devlink *dl, u32 id, 1248 struct devlink_param_gset_ctx *ctx); 1249int dsa_devlink_param_set(struct devlink *dl, u32 id, 1250 struct devlink_param_gset_ctx *ctx); 1251int dsa_devlink_params_register(struct dsa_switch *ds, 1252 const struct devlink_param *params, 1253 size_t params_count); 1254void dsa_devlink_params_unregister(struct dsa_switch *ds, 1255 const struct devlink_param *params, 1256 size_t params_count); 1257int dsa_devlink_resource_register(struct dsa_switch *ds, 1258 const char *resource_name, 1259 u64 resource_size, 1260 u64 resource_id, 1261 u64 parent_resource_id, 1262 const struct devlink_resource_size_params *size_params); 1263 1264void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1265 1266void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1267 u64 resource_id, 1268 devlink_resource_occ_get_t *occ_get, 1269 void *occ_get_priv); 1270void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1271 u64 resource_id); 1272struct devlink_region * 1273dsa_devlink_region_create(struct dsa_switch *ds, 1274 const struct devlink_region_ops *ops, 1275 u32 region_max_snapshots, u64 region_size); 1276struct devlink_region * 1277dsa_devlink_port_region_create(struct dsa_switch *ds, 1278 int port, 1279 const struct devlink_port_region_ops *ops, 1280 u32 region_max_snapshots, u64 region_size); 1281void dsa_devlink_region_destroy(struct devlink_region *region); 1282 1283struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1284 1285struct dsa_devlink_priv { 1286 struct dsa_switch *ds; 1287}; 1288 1289static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1290{ 1291 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1292 1293 return dl_priv->ds; 1294} 1295 1296static inline 1297struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1298{ 1299 struct devlink *dl = port->devlink; 1300 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1301 1302 return dl_priv->ds; 1303} 1304 1305static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1306{ 1307 return port->index; 1308} 1309 1310struct dsa_switch_driver { 1311 struct list_head list; 1312 const struct dsa_switch_ops *ops; 1313}; 1314 1315bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1316 const unsigned char *addr, u16 vid, 1317 struct dsa_db db); 1318bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1319 const struct switchdev_obj_port_mdb *mdb, 1320 struct dsa_db db); 1321 1322/* Keep inline for faster access in hot path */ 1323static inline bool netdev_uses_dsa(const struct net_device *dev) 1324{ 1325#if IS_ENABLED(CONFIG_NET_DSA) 1326 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1327#endif 1328 return false; 1329} 1330 1331/* All DSA tags that push the EtherType to the right (basically all except tail 1332 * tags, which don't break dissection) can be treated the same from the 1333 * perspective of the flow dissector. 1334 * 1335 * We need to return: 1336 * - offset: the (B - A) difference between: 1337 * A. the position of the real EtherType and 1338 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1339 * after the normal EtherType was supposed to be) 1340 * The offset in bytes is exactly equal to the tagger overhead (and half of 1341 * that, in __be16 shorts). 1342 * 1343 * - proto: the value of the real EtherType. 1344 */ 1345static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1346 __be16 *proto, int *offset) 1347{ 1348#if IS_ENABLED(CONFIG_NET_DSA) 1349 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1350 int tag_len = ops->needed_headroom; 1351 1352 *offset = tag_len; 1353 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1354#endif 1355} 1356 1357void dsa_unregister_switch(struct dsa_switch *ds); 1358int dsa_register_switch(struct dsa_switch *ds); 1359void dsa_switch_shutdown(struct dsa_switch *ds); 1360struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1361void dsa_flush_workqueue(void); 1362#ifdef CONFIG_PM_SLEEP 1363int dsa_switch_suspend(struct dsa_switch *ds); 1364int dsa_switch_resume(struct dsa_switch *ds); 1365#else 1366static inline int dsa_switch_suspend(struct dsa_switch *ds) 1367{ 1368 return 0; 1369} 1370static inline int dsa_switch_resume(struct dsa_switch *ds) 1371{ 1372 return 0; 1373} 1374#endif /* CONFIG_PM_SLEEP */ 1375 1376#if IS_ENABLED(CONFIG_NET_DSA) 1377bool dsa_user_dev_check(const struct net_device *dev); 1378#else 1379static inline bool dsa_user_dev_check(const struct net_device *dev) 1380{ 1381 return false; 1382} 1383#endif 1384 1385netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1386void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1387 1388#endif 1389