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 25 struct dsa_8021q_context; 26 struct tc_action; 27 28 #define DSA_TAG_PROTO_NONE_VALUE 0 29 #define DSA_TAG_PROTO_BRCM_VALUE 1 30 #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 31 #define DSA_TAG_PROTO_DSA_VALUE 3 32 #define DSA_TAG_PROTO_EDSA_VALUE 4 33 #define DSA_TAG_PROTO_GSWIP_VALUE 5 34 #define DSA_TAG_PROTO_KSZ9477_VALUE 6 35 #define DSA_TAG_PROTO_KSZ9893_VALUE 7 36 #define DSA_TAG_PROTO_LAN9303_VALUE 8 37 #define DSA_TAG_PROTO_MTK_VALUE 9 38 #define DSA_TAG_PROTO_QCA_VALUE 10 39 #define DSA_TAG_PROTO_TRAILER_VALUE 11 40 #define DSA_TAG_PROTO_8021Q_VALUE 12 41 #define DSA_TAG_PROTO_SJA1105_VALUE 13 42 #define DSA_TAG_PROTO_KSZ8795_VALUE 14 43 #define DSA_TAG_PROTO_OCELOT_VALUE 15 44 #define DSA_TAG_PROTO_AR9331_VALUE 16 45 #define DSA_TAG_PROTO_RTL4_A_VALUE 17 46 #define DSA_TAG_PROTO_HELLCREEK_VALUE 18 47 #define DSA_TAG_PROTO_XRS700X_VALUE 19 48 #define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 49 #define DSA_TAG_PROTO_SEVILLE_VALUE 21 50 #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 51 #define DSA_TAG_PROTO_SJA1110_VALUE 23 52 #define DSA_TAG_PROTO_RTL8_4_VALUE 24 53 #define DSA_TAG_PROTO_RTL8_4T_VALUE 25 54 #define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26 55 #define DSA_TAG_PROTO_LAN937X_VALUE 27 56 57 enum dsa_tag_protocol { 58 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 59 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 60 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 61 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 62 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 63 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 64 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 65 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 66 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 67 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 68 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 69 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 70 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 71 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 72 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 73 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 74 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 75 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 76 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 77 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 78 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 79 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 80 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 81 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 82 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 83 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 84 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 85 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 86 }; 87 88 struct dsa_switch; 89 90 struct dsa_device_ops { 91 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 92 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 93 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 94 int *offset); 95 int (*connect)(struct dsa_switch *ds); 96 void (*disconnect)(struct dsa_switch *ds); 97 unsigned int needed_headroom; 98 unsigned int needed_tailroom; 99 const char *name; 100 enum dsa_tag_protocol proto; 101 /* Some tagging protocols either mangle or shift the destination MAC 102 * address, in which case the DSA conduit would drop packets on ingress 103 * if what it understands out of the destination MAC address is not in 104 * its RX filter. 105 */ 106 bool promisc_on_conduit; 107 }; 108 109 struct dsa_lag { 110 struct net_device *dev; 111 unsigned int id; 112 struct mutex fdb_lock; 113 struct list_head fdbs; 114 refcount_t refcount; 115 }; 116 117 struct dsa_switch_tree { 118 struct list_head list; 119 120 /* List of switch ports */ 121 struct list_head ports; 122 123 /* Notifier chain for switch-wide events */ 124 struct raw_notifier_head nh; 125 126 /* Tree identifier */ 127 unsigned int index; 128 129 /* Number of switches attached to this tree */ 130 struct kref refcount; 131 132 /* Maps offloaded LAG netdevs to a zero-based linear ID for 133 * drivers that need it. 134 */ 135 struct dsa_lag **lags; 136 137 /* Tagging protocol operations */ 138 const struct dsa_device_ops *tag_ops; 139 140 /* Default tagging protocol preferred by the switches in this 141 * tree. 142 */ 143 enum dsa_tag_protocol default_proto; 144 145 /* Has this tree been applied to the hardware? */ 146 bool setup; 147 148 /* 149 * Configuration data for the platform device that owns 150 * this dsa switch tree instance. 151 */ 152 struct dsa_platform_data *pd; 153 154 /* List of DSA links composing the routing table */ 155 struct list_head rtable; 156 157 /* Length of "lags" array */ 158 unsigned int lags_len; 159 160 /* Track the largest switch index within a tree */ 161 unsigned int last_switch; 162 }; 163 164 /* LAG IDs are one-based, the dst->lags array is zero-based */ 165 #define dsa_lags_foreach_id(_id, _dst) \ 166 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 167 if ((_dst)->lags[(_id) - 1]) 168 169 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 170 list_for_each_entry((_dp), &(_dst)->ports, list) \ 171 if (dsa_port_offloads_lag((_dp), (_lag))) 172 173 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 174 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 175 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 176 177 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 178 unsigned int id) 179 { 180 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 181 return dst->lags[id - 1]; 182 } 183 184 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 185 struct net_device *lag_dev) 186 { 187 unsigned int id; 188 189 dsa_lags_foreach_id(id, dst) { 190 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 191 192 if (lag->dev == lag_dev) 193 return lag->id; 194 } 195 196 return -ENODEV; 197 } 198 199 /* TC matchall action types */ 200 enum dsa_port_mall_action_type { 201 DSA_PORT_MALL_MIRROR, 202 DSA_PORT_MALL_POLICER, 203 }; 204 205 /* TC mirroring entry */ 206 struct dsa_mall_mirror_tc_entry { 207 u8 to_local_port; 208 bool ingress; 209 }; 210 211 /* TC port policer entry */ 212 struct dsa_mall_policer_tc_entry { 213 u32 burst; 214 u64 rate_bytes_per_sec; 215 }; 216 217 /* TC matchall entry */ 218 struct dsa_mall_tc_entry { 219 struct list_head list; 220 unsigned long cookie; 221 enum dsa_port_mall_action_type type; 222 union { 223 struct dsa_mall_mirror_tc_entry mirror; 224 struct dsa_mall_policer_tc_entry policer; 225 }; 226 }; 227 228 struct dsa_bridge { 229 struct net_device *dev; 230 unsigned int num; 231 bool tx_fwd_offload; 232 refcount_t refcount; 233 }; 234 235 struct dsa_port { 236 /* A CPU port is physically connected to a conduit device. A user port 237 * exposes a network device to user-space, called 'user' here. 238 */ 239 union { 240 struct net_device *conduit; 241 struct net_device *user; 242 }; 243 244 /* Copy of the tagging protocol operations, for quicker access 245 * in the data path. Valid only for the CPU ports. 246 */ 247 const struct dsa_device_ops *tag_ops; 248 249 /* Copies for faster access in conduit receive hot path */ 250 struct dsa_switch_tree *dst; 251 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 252 253 struct dsa_switch *ds; 254 255 unsigned int index; 256 257 enum { 258 DSA_PORT_TYPE_UNUSED = 0, 259 DSA_PORT_TYPE_CPU, 260 DSA_PORT_TYPE_DSA, 261 DSA_PORT_TYPE_USER, 262 } type; 263 264 const char *name; 265 struct dsa_port *cpu_dp; 266 u8 mac[ETH_ALEN]; 267 268 u8 stp_state; 269 270 /* Warning: the following bit fields are not atomic, and updating them 271 * can only be done from code paths where concurrency is not possible 272 * (probe time or under rtnl_lock). 273 */ 274 u8 vlan_filtering:1; 275 276 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 277 u8 learning:1; 278 279 u8 lag_tx_enabled:1; 280 281 /* conduit state bits, valid only on CPU ports */ 282 u8 conduit_admin_up:1; 283 u8 conduit_oper_up:1; 284 285 /* Valid only on user ports */ 286 u8 cpu_port_in_lag:1; 287 288 u8 setup:1; 289 290 struct device_node *dn; 291 unsigned int ageing_time; 292 293 struct dsa_bridge *bridge; 294 struct devlink_port devlink_port; 295 struct phylink *pl; 296 struct phylink_config pl_config; 297 struct dsa_lag *lag; 298 struct net_device *hsr_dev; 299 300 struct list_head list; 301 302 /* 303 * Original copy of the conduit netdev ethtool_ops 304 */ 305 const struct ethtool_ops *orig_ethtool_ops; 306 307 /* List of MAC addresses that must be forwarded on this port. 308 * These are only valid on CPU ports and DSA links. 309 */ 310 struct mutex addr_lists_lock; 311 struct list_head fdbs; 312 struct list_head mdbs; 313 314 struct mutex vlans_lock; 315 union { 316 /* List of VLANs that CPU and DSA ports are members of. 317 * Access to this is serialized by the sleepable @vlans_lock. 318 */ 319 struct list_head vlans; 320 /* List of VLANs that user ports are members of. 321 * Access to this is serialized by netif_addr_lock_bh(). 322 */ 323 struct list_head user_vlans; 324 }; 325 }; 326 327 static inline struct dsa_port * 328 dsa_phylink_to_port(struct phylink_config *config) 329 { 330 return container_of(config, struct dsa_port, pl_config); 331 } 332 333 /* TODO: ideally DSA ports would have a single dp->link_dp member, 334 * and no dst->rtable nor this struct dsa_link would be needed, 335 * but this would require some more complex tree walking, 336 * so keep it stupid at the moment and list them all. 337 */ 338 struct dsa_link { 339 struct dsa_port *dp; 340 struct dsa_port *link_dp; 341 struct list_head list; 342 }; 343 344 enum dsa_db_type { 345 DSA_DB_PORT, 346 DSA_DB_LAG, 347 DSA_DB_BRIDGE, 348 }; 349 350 struct dsa_db { 351 enum dsa_db_type type; 352 353 union { 354 const struct dsa_port *dp; 355 struct dsa_lag lag; 356 struct dsa_bridge bridge; 357 }; 358 }; 359 360 struct dsa_mac_addr { 361 unsigned char addr[ETH_ALEN]; 362 u16 vid; 363 refcount_t refcount; 364 struct list_head list; 365 struct dsa_db db; 366 }; 367 368 struct dsa_vlan { 369 u16 vid; 370 refcount_t refcount; 371 struct list_head list; 372 }; 373 374 struct dsa_switch { 375 struct device *dev; 376 377 /* 378 * Parent switch tree, and switch index. 379 */ 380 struct dsa_switch_tree *dst; 381 unsigned int index; 382 383 /* Warning: the following bit fields are not atomic, and updating them 384 * can only be done from code paths where concurrency is not possible 385 * (probe time or under rtnl_lock). 386 */ 387 u32 setup:1; 388 389 /* Disallow bridge core from requesting different VLAN awareness 390 * settings on ports if not hardware-supported 391 */ 392 u32 vlan_filtering_is_global:1; 393 394 /* Keep VLAN filtering enabled on ports not offloading any upper */ 395 u32 needs_standalone_vlan_filtering:1; 396 397 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 398 * that have vlan_filtering=0. All drivers should ideally set this (and 399 * then the option would get removed), but it is unknown whether this 400 * would break things or not. 401 */ 402 u32 configure_vlan_while_not_filtering:1; 403 404 /* If the switch driver always programs the CPU port as egress tagged 405 * despite the VLAN configuration indicating otherwise, then setting 406 * @untag_bridge_pvid will force the DSA receive path to pop the 407 * bridge's default_pvid VLAN tagged frames to offer a consistent 408 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge 409 * device. 410 */ 411 u32 untag_bridge_pvid:1; 412 413 /* Let DSA manage the FDB entries towards the 414 * CPU, based on the software bridge database. 415 */ 416 u32 assisted_learning_on_cpu_port:1; 417 418 /* In case vlan_filtering_is_global is set, the VLAN awareness state 419 * should be retrieved from here and not from the per-port settings. 420 */ 421 u32 vlan_filtering:1; 422 423 /* For switches that only have the MRU configurable. To ensure the 424 * configured MTU is not exceeded, normalization of MRU on all bridged 425 * interfaces is needed. 426 */ 427 u32 mtu_enforcement_ingress:1; 428 429 /* Drivers that isolate the FDBs of multiple bridges must set this 430 * to true to receive the bridge as an argument in .port_fdb_{add,del} 431 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 432 * passed as zero. 433 */ 434 u32 fdb_isolation:1; 435 436 /* Listener for switch fabric events */ 437 struct notifier_block nb; 438 439 /* 440 * Give the switch driver somewhere to hang its private data 441 * structure. 442 */ 443 void *priv; 444 445 void *tagger_data; 446 447 /* 448 * Configuration data for this switch. 449 */ 450 struct dsa_chip_data *cd; 451 452 /* 453 * The switch operations. 454 */ 455 const struct dsa_switch_ops *ops; 456 457 /* 458 * Allow a DSA switch driver to override the phylink MAC ops 459 */ 460 const struct phylink_mac_ops *phylink_mac_ops; 461 462 /* 463 * User mii_bus and devices for the individual ports. 464 */ 465 u32 phys_mii_mask; 466 struct mii_bus *user_mii_bus; 467 468 /* Ageing Time limits in msecs */ 469 unsigned int ageing_time_min; 470 unsigned int ageing_time_max; 471 472 /* Storage for drivers using tag_8021q */ 473 struct dsa_8021q_context *tag_8021q_ctx; 474 475 /* devlink used to represent this switch device */ 476 struct devlink *devlink; 477 478 /* Number of switch port queues */ 479 unsigned int num_tx_queues; 480 481 /* Drivers that benefit from having an ID associated with each 482 * offloaded LAG should set this to the maximum number of 483 * supported IDs. DSA will then maintain a mapping of _at 484 * least_ these many IDs, accessible to drivers via 485 * dsa_lag_id(). 486 */ 487 unsigned int num_lag_ids; 488 489 /* Drivers that support bridge forwarding offload or FDB isolation 490 * should set this to the maximum number of bridges spanning the same 491 * switch tree (or all trees, in the case of cross-tree bridging 492 * support) that can be offloaded. 493 */ 494 unsigned int max_num_bridges; 495 496 unsigned int num_ports; 497 }; 498 499 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 500 { 501 struct dsa_switch_tree *dst = ds->dst; 502 struct dsa_port *dp; 503 504 list_for_each_entry(dp, &dst->ports, list) 505 if (dp->ds == ds && dp->index == p) 506 return dp; 507 508 return NULL; 509 } 510 511 static inline bool dsa_port_is_dsa(struct dsa_port *port) 512 { 513 return port->type == DSA_PORT_TYPE_DSA; 514 } 515 516 static inline bool dsa_port_is_cpu(struct dsa_port *port) 517 { 518 return port->type == DSA_PORT_TYPE_CPU; 519 } 520 521 static inline bool dsa_port_is_user(struct dsa_port *dp) 522 { 523 return dp->type == DSA_PORT_TYPE_USER; 524 } 525 526 static inline bool dsa_port_is_unused(struct dsa_port *dp) 527 { 528 return dp->type == DSA_PORT_TYPE_UNUSED; 529 } 530 531 static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 532 { 533 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 534 dp->conduit_oper_up; 535 } 536 537 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 538 { 539 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 540 } 541 542 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 543 { 544 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 545 } 546 547 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 548 { 549 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 550 } 551 552 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 553 { 554 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 555 } 556 557 #define dsa_tree_for_each_user_port(_dp, _dst) \ 558 list_for_each_entry((_dp), &(_dst)->ports, list) \ 559 if (dsa_port_is_user((_dp))) 560 561 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 562 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 563 if (dsa_port_is_user((_dp))) 564 565 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 566 list_for_each_entry((_dp), &(_dst)->ports, list) \ 567 if (dsa_port_is_cpu((_dp))) 568 569 #define dsa_switch_for_each_port(_dp, _ds) \ 570 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 571 if ((_dp)->ds == (_ds)) 572 573 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 574 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 575 if ((_dp)->ds == (_ds)) 576 577 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 578 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 579 if ((_dp)->ds == (_ds)) 580 581 #define dsa_switch_for_each_available_port(_dp, _ds) \ 582 dsa_switch_for_each_port((_dp), (_ds)) \ 583 if (!dsa_port_is_unused((_dp))) 584 585 #define dsa_switch_for_each_user_port(_dp, _ds) \ 586 dsa_switch_for_each_port((_dp), (_ds)) \ 587 if (dsa_port_is_user((_dp))) 588 589 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 590 dsa_switch_for_each_port((_dp), (_ds)) \ 591 if (dsa_port_is_cpu((_dp))) 592 593 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 594 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 595 if (dsa_port_is_cpu((_dp))) 596 597 static inline u32 dsa_user_ports(struct dsa_switch *ds) 598 { 599 struct dsa_port *dp; 600 u32 mask = 0; 601 602 dsa_switch_for_each_user_port(dp, ds) 603 mask |= BIT(dp->index); 604 605 return mask; 606 } 607 608 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 609 { 610 struct dsa_port *cpu_dp; 611 u32 mask = 0; 612 613 dsa_switch_for_each_cpu_port(cpu_dp, ds) 614 mask |= BIT(cpu_dp->index); 615 616 return mask; 617 } 618 619 /* Return the local port used to reach an arbitrary switch device */ 620 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 621 { 622 struct dsa_switch_tree *dst = ds->dst; 623 struct dsa_link *dl; 624 625 list_for_each_entry(dl, &dst->rtable, list) 626 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 627 return dl->dp->index; 628 629 return ds->num_ports; 630 } 631 632 /* Return the local port used to reach an arbitrary switch port */ 633 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 634 int port) 635 { 636 if (device == ds->index) 637 return port; 638 else 639 return dsa_routing_port(ds, device); 640 } 641 642 /* Return the local port used to reach the dedicated CPU port */ 643 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 644 { 645 const struct dsa_port *dp = dsa_to_port(ds, port); 646 const struct dsa_port *cpu_dp = dp->cpu_dp; 647 648 if (!cpu_dp) 649 return port; 650 651 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 652 } 653 654 /* Return true if this is the local port used to reach the CPU port */ 655 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 656 { 657 if (dsa_is_unused_port(ds, port)) 658 return false; 659 660 return port == dsa_upstream_port(ds, port); 661 } 662 663 /* Return true if this is a DSA port leading away from the CPU */ 664 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 665 { 666 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 667 } 668 669 /* Return the local port used to reach the CPU port */ 670 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 671 { 672 struct dsa_port *dp; 673 674 dsa_switch_for_each_available_port(dp, ds) { 675 return dsa_upstream_port(ds, dp->index); 676 } 677 678 return ds->num_ports; 679 } 680 681 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 682 * that the routing port from @downstream_ds to @upstream_ds is also the port 683 * which @downstream_ds uses to reach its dedicated CPU. 684 */ 685 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 686 struct dsa_switch *downstream_ds) 687 { 688 int routing_port; 689 690 if (upstream_ds == downstream_ds) 691 return true; 692 693 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 694 695 return dsa_is_upstream_port(downstream_ds, routing_port); 696 } 697 698 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 699 { 700 const struct dsa_switch *ds = dp->ds; 701 702 if (ds->vlan_filtering_is_global) 703 return ds->vlan_filtering; 704 else 705 return dp->vlan_filtering; 706 } 707 708 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 709 { 710 return dp->lag ? dp->lag->id : 0; 711 } 712 713 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 714 { 715 return dp->lag ? dp->lag->dev : NULL; 716 } 717 718 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 719 const struct dsa_lag *lag) 720 { 721 return dsa_port_lag_dev_get(dp) == lag->dev; 722 } 723 724 static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 725 { 726 if (dp->cpu_port_in_lag) 727 return dsa_port_lag_dev_get(dp->cpu_dp); 728 729 return dp->cpu_dp->conduit; 730 } 731 732 static inline 733 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 734 { 735 if (!dp->bridge) 736 return NULL; 737 738 if (dp->lag) 739 return dp->lag->dev; 740 else if (dp->hsr_dev) 741 return dp->hsr_dev; 742 743 return dp->user; 744 } 745 746 static inline struct net_device * 747 dsa_port_bridge_dev_get(const struct dsa_port *dp) 748 { 749 return dp->bridge ? dp->bridge->dev : NULL; 750 } 751 752 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 753 { 754 return dp->bridge ? dp->bridge->num : 0; 755 } 756 757 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 758 const struct dsa_port *b) 759 { 760 struct net_device *br_a = dsa_port_bridge_dev_get(a); 761 struct net_device *br_b = dsa_port_bridge_dev_get(b); 762 763 /* Standalone ports are not in the same bridge with one another */ 764 return (!br_a || !br_b) ? false : (br_a == br_b); 765 } 766 767 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 768 const struct net_device *dev) 769 { 770 return dsa_port_to_bridge_port(dp) == dev; 771 } 772 773 static inline bool 774 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 775 const struct net_device *bridge_dev) 776 { 777 /* DSA ports connected to a bridge, and event was emitted 778 * for the bridge. 779 */ 780 return dsa_port_bridge_dev_get(dp) == bridge_dev; 781 } 782 783 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 784 const struct dsa_bridge *bridge) 785 { 786 return dsa_port_bridge_dev_get(dp) == bridge->dev; 787 } 788 789 /* Returns true if any port of this tree offloads the given net_device */ 790 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 791 const struct net_device *dev) 792 { 793 struct dsa_port *dp; 794 795 list_for_each_entry(dp, &dst->ports, list) 796 if (dsa_port_offloads_bridge_port(dp, dev)) 797 return true; 798 799 return false; 800 } 801 802 /* Returns true if any port of this tree offloads the given bridge */ 803 static inline bool 804 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 805 const struct net_device *bridge_dev) 806 { 807 struct dsa_port *dp; 808 809 list_for_each_entry(dp, &dst->ports, list) 810 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 811 return true; 812 813 return false; 814 } 815 816 static inline bool dsa_port_tree_same(const struct dsa_port *a, 817 const struct dsa_port *b) 818 { 819 return a->ds->dst == b->ds->dst; 820 } 821 822 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 823 bool is_static, void *data); 824 struct dsa_switch_ops { 825 /* 826 * Tagging protocol helpers called for the CPU ports and DSA links. 827 * @get_tag_protocol retrieves the initial tagging protocol and is 828 * mandatory. Switches which can operate using multiple tagging 829 * protocols should implement @change_tag_protocol and report in 830 * @get_tag_protocol the tagger in current use. 831 */ 832 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 833 int port, 834 enum dsa_tag_protocol mprot); 835 int (*change_tag_protocol)(struct dsa_switch *ds, 836 enum dsa_tag_protocol proto); 837 /* 838 * Method for switch drivers to connect to the tagging protocol driver 839 * in current use. The switch driver can provide handlers for certain 840 * types of packets for switch management. 841 */ 842 int (*connect_tag_protocol)(struct dsa_switch *ds, 843 enum dsa_tag_protocol proto); 844 845 int (*port_change_conduit)(struct dsa_switch *ds, int port, 846 struct net_device *conduit, 847 struct netlink_ext_ack *extack); 848 849 /* Optional switch-wide initialization and destruction methods */ 850 int (*setup)(struct dsa_switch *ds); 851 void (*teardown)(struct dsa_switch *ds); 852 853 /* Per-port initialization and destruction methods. Mandatory if the 854 * driver registers devlink port regions, optional otherwise. 855 */ 856 int (*port_setup)(struct dsa_switch *ds, int port); 857 void (*port_teardown)(struct dsa_switch *ds, int port); 858 859 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 860 861 /* 862 * Access to the switch's PHY registers. 863 */ 864 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 865 int (*phy_write)(struct dsa_switch *ds, int port, 866 int regnum, u16 val); 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 1247 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1248 struct devlink_param_gset_ctx *ctx); 1249 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1250 struct devlink_param_gset_ctx *ctx, 1251 struct netlink_ext_ack *extack); 1252 int dsa_devlink_params_register(struct dsa_switch *ds, 1253 const struct devlink_param *params, 1254 size_t params_count); 1255 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1256 const struct devlink_param *params, 1257 size_t params_count); 1258 int dsa_devlink_resource_register(struct dsa_switch *ds, 1259 const char *resource_name, 1260 u64 resource_size, 1261 u64 resource_id, 1262 u64 parent_resource_id, 1263 const struct devlink_resource_size_params *size_params); 1264 1265 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1266 1267 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1268 u64 resource_id, 1269 devlink_resource_occ_get_t *occ_get, 1270 void *occ_get_priv); 1271 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1272 u64 resource_id); 1273 struct devlink_region * 1274 dsa_devlink_region_create(struct dsa_switch *ds, 1275 const struct devlink_region_ops *ops, 1276 u32 region_max_snapshots, u64 region_size); 1277 struct devlink_region * 1278 dsa_devlink_port_region_create(struct dsa_switch *ds, 1279 int port, 1280 const struct devlink_port_region_ops *ops, 1281 u32 region_max_snapshots, u64 region_size); 1282 void dsa_devlink_region_destroy(struct devlink_region *region); 1283 1284 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1285 1286 struct dsa_devlink_priv { 1287 struct dsa_switch *ds; 1288 }; 1289 1290 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1291 { 1292 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1293 1294 return dl_priv->ds; 1295 } 1296 1297 static inline 1298 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1299 { 1300 struct devlink *dl = port->devlink; 1301 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1302 1303 return dl_priv->ds; 1304 } 1305 1306 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1307 { 1308 return port->index; 1309 } 1310 1311 struct dsa_switch_driver { 1312 struct list_head list; 1313 const struct dsa_switch_ops *ops; 1314 }; 1315 1316 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1317 const unsigned char *addr, u16 vid, 1318 struct dsa_db db); 1319 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1320 const struct switchdev_obj_port_mdb *mdb, 1321 struct dsa_db db); 1322 1323 /* Keep inline for faster access in hot path */ 1324 static inline bool netdev_uses_dsa(const struct net_device *dev) 1325 { 1326 #if IS_ENABLED(CONFIG_NET_DSA) 1327 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1328 #endif 1329 return false; 1330 } 1331 1332 /* All DSA tags that push the EtherType to the right (basically all except tail 1333 * tags, which don't break dissection) can be treated the same from the 1334 * perspective of the flow dissector. 1335 * 1336 * We need to return: 1337 * - offset: the (B - A) difference between: 1338 * A. the position of the real EtherType and 1339 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1340 * after the normal EtherType was supposed to be) 1341 * The offset in bytes is exactly equal to the tagger overhead (and half of 1342 * that, in __be16 shorts). 1343 * 1344 * - proto: the value of the real EtherType. 1345 */ 1346 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1347 __be16 *proto, int *offset) 1348 { 1349 #if IS_ENABLED(CONFIG_NET_DSA) 1350 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1351 int tag_len = ops->needed_headroom; 1352 1353 *offset = tag_len; 1354 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1355 #endif 1356 } 1357 1358 void dsa_unregister_switch(struct dsa_switch *ds); 1359 int dsa_register_switch(struct dsa_switch *ds); 1360 void dsa_switch_shutdown(struct dsa_switch *ds); 1361 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1362 void dsa_flush_workqueue(void); 1363 #ifdef CONFIG_PM_SLEEP 1364 int dsa_switch_suspend(struct dsa_switch *ds); 1365 int dsa_switch_resume(struct dsa_switch *ds); 1366 #else 1367 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1368 { 1369 return 0; 1370 } 1371 static inline int dsa_switch_resume(struct dsa_switch *ds) 1372 { 1373 return 0; 1374 } 1375 #endif /* CONFIG_PM_SLEEP */ 1376 1377 #if IS_ENABLED(CONFIG_NET_DSA) 1378 bool dsa_user_dev_check(const struct net_device *dev); 1379 #else 1380 static inline bool dsa_user_dev_check(const struct net_device *dev) 1381 { 1382 return false; 1383 } 1384 #endif 1385 1386 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1387 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1388 1389 #endif 1390