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 #define DSA_TAG_PROTO_VSC73XX_8021Q_VALUE 28 57 58 enum dsa_tag_protocol { 59 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 60 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 61 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 62 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 63 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 64 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 65 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 66 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 67 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 68 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 69 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 70 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 71 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 72 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 73 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 74 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 75 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 76 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 77 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 78 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 79 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 80 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 81 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 82 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 83 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 84 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 85 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 86 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 87 DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE, 88 }; 89 90 struct dsa_switch; 91 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, 96 int *offset); 97 int (*connect)(struct dsa_switch *ds); 98 void (*disconnect)(struct dsa_switch *ds); 99 unsigned int needed_headroom; 100 unsigned int needed_tailroom; 101 const char *name; 102 enum dsa_tag_protocol proto; 103 /* Some tagging protocols either mangle or shift the destination MAC 104 * address, in which case the DSA conduit would drop packets on ingress 105 * if what it understands out of the destination MAC address is not in 106 * its RX filter. 107 */ 108 bool promisc_on_conduit; 109 }; 110 111 struct dsa_lag { 112 struct net_device *dev; 113 unsigned int id; 114 struct mutex fdb_lock; 115 struct list_head fdbs; 116 refcount_t refcount; 117 }; 118 119 struct dsa_switch_tree { 120 struct list_head list; 121 122 /* List of switch ports */ 123 struct list_head ports; 124 125 /* Notifier chain for switch-wide events */ 126 struct raw_notifier_head nh; 127 128 /* Tree identifier */ 129 unsigned int index; 130 131 /* Number of switches attached to this tree */ 132 struct kref refcount; 133 134 /* Maps offloaded LAG netdevs to a zero-based linear ID for 135 * drivers that need it. 136 */ 137 struct dsa_lag **lags; 138 139 /* Tagging protocol operations */ 140 const struct dsa_device_ops *tag_ops; 141 142 /* Default tagging protocol preferred by the switches in this 143 * tree. 144 */ 145 enum dsa_tag_protocol default_proto; 146 147 /* Has this tree been applied to the hardware? */ 148 bool setup; 149 150 /* 151 * Configuration data for the platform device that owns 152 * this dsa switch tree instance. 153 */ 154 struct dsa_platform_data *pd; 155 156 /* List of DSA links composing the routing table */ 157 struct list_head rtable; 158 159 /* Length of "lags" array */ 160 unsigned int lags_len; 161 162 /* Track the largest switch index within a tree */ 163 unsigned int last_switch; 164 }; 165 166 /* LAG IDs are one-based, the dst->lags array is zero-based */ 167 #define dsa_lags_foreach_id(_id, _dst) \ 168 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 169 if ((_dst)->lags[(_id) - 1]) 170 171 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 172 list_for_each_entry((_dp), &(_dst)->ports, list) \ 173 if (dsa_port_offloads_lag((_dp), (_lag))) 174 175 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 176 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 177 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 178 179 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 180 unsigned int id) 181 { 182 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 183 return dst->lags[id - 1]; 184 } 185 186 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 187 struct net_device *lag_dev) 188 { 189 unsigned int id; 190 191 dsa_lags_foreach_id(id, dst) { 192 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 193 194 if (lag->dev == lag_dev) 195 return lag->id; 196 } 197 198 return -ENODEV; 199 } 200 201 /* TC matchall action types */ 202 enum dsa_port_mall_action_type { 203 DSA_PORT_MALL_MIRROR, 204 DSA_PORT_MALL_POLICER, 205 }; 206 207 /* TC mirroring entry */ 208 struct dsa_mall_mirror_tc_entry { 209 u8 to_local_port; 210 bool ingress; 211 }; 212 213 /* TC port policer entry */ 214 struct dsa_mall_policer_tc_entry { 215 u32 burst; 216 u64 rate_bytes_per_sec; 217 }; 218 219 /* TC matchall entry */ 220 struct dsa_mall_tc_entry { 221 struct list_head list; 222 unsigned long cookie; 223 enum dsa_port_mall_action_type type; 224 union { 225 struct dsa_mall_mirror_tc_entry mirror; 226 struct dsa_mall_policer_tc_entry policer; 227 }; 228 }; 229 230 struct dsa_bridge { 231 struct net_device *dev; 232 unsigned int num; 233 bool tx_fwd_offload; 234 refcount_t refcount; 235 }; 236 237 struct dsa_port { 238 /* A CPU port is physically connected to a conduit device. A user port 239 * exposes a network device to user-space, called 'user' here. 240 */ 241 union { 242 struct net_device *conduit; 243 struct net_device *user; 244 }; 245 246 /* Copy of the tagging protocol operations, for quicker access 247 * in the data path. Valid only for the CPU ports. 248 */ 249 const struct dsa_device_ops *tag_ops; 250 251 /* Copies for faster access in conduit receive hot path */ 252 struct dsa_switch_tree *dst; 253 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 254 255 struct dsa_switch *ds; 256 257 unsigned int index; 258 259 enum { 260 DSA_PORT_TYPE_UNUSED = 0, 261 DSA_PORT_TYPE_CPU, 262 DSA_PORT_TYPE_DSA, 263 DSA_PORT_TYPE_USER, 264 } type; 265 266 const char *name; 267 struct dsa_port *cpu_dp; 268 u8 mac[ETH_ALEN]; 269 270 u8 stp_state; 271 272 /* Warning: the following bit fields are not atomic, and updating them 273 * can only be done from code paths where concurrency is not possible 274 * (probe time or under rtnl_lock). 275 */ 276 u8 vlan_filtering:1; 277 278 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 279 u8 learning:1; 280 281 u8 lag_tx_enabled:1; 282 283 /* conduit state bits, valid only on CPU ports */ 284 u8 conduit_admin_up:1; 285 u8 conduit_oper_up:1; 286 287 /* Valid only on user ports */ 288 u8 cpu_port_in_lag:1; 289 290 u8 setup:1; 291 292 struct device_node *dn; 293 unsigned int ageing_time; 294 295 struct dsa_bridge *bridge; 296 struct devlink_port devlink_port; 297 struct phylink *pl; 298 struct phylink_config pl_config; 299 struct dsa_lag *lag; 300 struct net_device *hsr_dev; 301 302 struct list_head list; 303 304 /* 305 * Original copy of the conduit netdev ethtool_ops 306 */ 307 const struct ethtool_ops *orig_ethtool_ops; 308 309 /* List of MAC addresses that must be forwarded on this port. 310 * These are only valid on CPU ports and DSA links. 311 */ 312 struct mutex addr_lists_lock; 313 struct list_head fdbs; 314 struct list_head mdbs; 315 316 struct mutex vlans_lock; 317 union { 318 /* List of VLANs that CPU and DSA ports are members of. 319 * Access to this is serialized by the sleepable @vlans_lock. 320 */ 321 struct list_head vlans; 322 /* List of VLANs that user ports are members of. 323 * Access to this is serialized by netif_addr_lock_bh(). 324 */ 325 struct list_head user_vlans; 326 }; 327 }; 328 329 static inline struct dsa_port * 330 dsa_phylink_to_port(struct phylink_config *config) 331 { 332 return container_of(config, struct dsa_port, pl_config); 333 } 334 335 /* TODO: ideally DSA ports would have a single dp->link_dp member, 336 * and no dst->rtable nor this struct dsa_link would be needed, 337 * but this would require some more complex tree walking, 338 * so keep it stupid at the moment and list them all. 339 */ 340 struct dsa_link { 341 struct dsa_port *dp; 342 struct dsa_port *link_dp; 343 struct list_head list; 344 }; 345 346 enum dsa_db_type { 347 DSA_DB_PORT, 348 DSA_DB_LAG, 349 DSA_DB_BRIDGE, 350 }; 351 352 struct dsa_db { 353 enum dsa_db_type type; 354 355 union { 356 const struct dsa_port *dp; 357 struct dsa_lag lag; 358 struct dsa_bridge bridge; 359 }; 360 }; 361 362 struct dsa_mac_addr { 363 unsigned char addr[ETH_ALEN]; 364 u16 vid; 365 refcount_t refcount; 366 struct list_head list; 367 struct dsa_db db; 368 }; 369 370 struct dsa_vlan { 371 u16 vid; 372 refcount_t refcount; 373 struct list_head list; 374 }; 375 376 struct dsa_switch { 377 struct device *dev; 378 379 /* 380 * Parent switch tree, and switch index. 381 */ 382 struct dsa_switch_tree *dst; 383 unsigned int index; 384 385 /* Warning: the following bit fields are not atomic, and updating them 386 * can only be done from code paths where concurrency is not possible 387 * (probe time or under rtnl_lock). 388 */ 389 u32 setup:1; 390 391 /* Disallow bridge core from requesting different VLAN awareness 392 * settings on ports if not hardware-supported 393 */ 394 u32 vlan_filtering_is_global:1; 395 396 /* Keep VLAN filtering enabled on ports not offloading any upper */ 397 u32 needs_standalone_vlan_filtering:1; 398 399 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 400 * that have vlan_filtering=0. All drivers should ideally set this (and 401 * then the option would get removed), but it is unknown whether this 402 * would break things or not. 403 */ 404 u32 configure_vlan_while_not_filtering:1; 405 406 /* If the switch driver always programs the CPU port as egress tagged 407 * despite the VLAN configuration indicating otherwise, then setting 408 * @untag_bridge_pvid will force the DSA receive path to pop the 409 * bridge's default_pvid VLAN tagged frames to offer a consistent 410 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge 411 * device. 412 */ 413 u32 untag_bridge_pvid:1; 414 415 /* Let DSA manage the FDB entries towards the 416 * CPU, based on the software bridge database. 417 */ 418 u32 assisted_learning_on_cpu_port:1; 419 420 /* In case vlan_filtering_is_global is set, the VLAN awareness state 421 * should be retrieved from here and not from the per-port settings. 422 */ 423 u32 vlan_filtering:1; 424 425 /* For switches that only have the MRU configurable. To ensure the 426 * configured MTU is not exceeded, normalization of MRU on all bridged 427 * interfaces is needed. 428 */ 429 u32 mtu_enforcement_ingress:1; 430 431 /* Drivers that isolate the FDBs of multiple bridges must set this 432 * to true to receive the bridge as an argument in .port_fdb_{add,del} 433 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 434 * passed as zero. 435 */ 436 u32 fdb_isolation:1; 437 438 /* Drivers that have global DSCP mapping settings must set this to 439 * true to automatically apply the settings to all ports. 440 */ 441 u32 dscp_prio_mapping_is_global:1; 442 443 /* Listener for switch fabric events */ 444 struct notifier_block nb; 445 446 /* 447 * Give the switch driver somewhere to hang its private data 448 * structure. 449 */ 450 void *priv; 451 452 void *tagger_data; 453 454 /* 455 * Configuration data for this switch. 456 */ 457 struct dsa_chip_data *cd; 458 459 /* 460 * The switch operations. 461 */ 462 const struct dsa_switch_ops *ops; 463 464 /* 465 * Allow a DSA switch driver to override the phylink MAC ops 466 */ 467 const struct phylink_mac_ops *phylink_mac_ops; 468 469 /* 470 * User mii_bus and devices for the individual ports. 471 */ 472 u32 phys_mii_mask; 473 struct mii_bus *user_mii_bus; 474 475 /* Ageing Time limits in msecs */ 476 unsigned int ageing_time_min; 477 unsigned int ageing_time_max; 478 479 /* Storage for drivers using tag_8021q */ 480 struct dsa_8021q_context *tag_8021q_ctx; 481 482 /* devlink used to represent this switch device */ 483 struct devlink *devlink; 484 485 /* Number of switch port queues */ 486 unsigned int num_tx_queues; 487 488 /* Drivers that benefit from having an ID associated with each 489 * offloaded LAG should set this to the maximum number of 490 * supported IDs. DSA will then maintain a mapping of _at 491 * least_ these many IDs, accessible to drivers via 492 * dsa_lag_id(). 493 */ 494 unsigned int num_lag_ids; 495 496 /* Drivers that support bridge forwarding offload or FDB isolation 497 * should set this to the maximum number of bridges spanning the same 498 * switch tree (or all trees, in the case of cross-tree bridging 499 * support) that can be offloaded. 500 */ 501 unsigned int max_num_bridges; 502 503 unsigned int num_ports; 504 }; 505 506 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 507 { 508 struct dsa_switch_tree *dst = ds->dst; 509 struct dsa_port *dp; 510 511 list_for_each_entry(dp, &dst->ports, list) 512 if (dp->ds == ds && dp->index == p) 513 return dp; 514 515 return NULL; 516 } 517 518 static inline bool dsa_port_is_dsa(struct dsa_port *port) 519 { 520 return port->type == DSA_PORT_TYPE_DSA; 521 } 522 523 static inline bool dsa_port_is_cpu(struct dsa_port *port) 524 { 525 return port->type == DSA_PORT_TYPE_CPU; 526 } 527 528 static inline bool dsa_port_is_user(struct dsa_port *dp) 529 { 530 return dp->type == DSA_PORT_TYPE_USER; 531 } 532 533 static inline bool dsa_port_is_unused(struct dsa_port *dp) 534 { 535 return dp->type == DSA_PORT_TYPE_UNUSED; 536 } 537 538 static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 539 { 540 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 541 dp->conduit_oper_up; 542 } 543 544 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 545 { 546 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 547 } 548 549 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 550 { 551 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 552 } 553 554 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 555 { 556 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 557 } 558 559 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 560 { 561 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 562 } 563 564 #define dsa_tree_for_each_user_port(_dp, _dst) \ 565 list_for_each_entry((_dp), &(_dst)->ports, list) \ 566 if (dsa_port_is_user((_dp))) 567 568 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 569 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 570 if (dsa_port_is_user((_dp))) 571 572 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 573 list_for_each_entry((_dp), &(_dst)->ports, list) \ 574 if (dsa_port_is_cpu((_dp))) 575 576 #define dsa_switch_for_each_port(_dp, _ds) \ 577 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 578 if ((_dp)->ds == (_ds)) 579 580 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 581 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 582 if ((_dp)->ds == (_ds)) 583 584 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 585 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 586 if ((_dp)->ds == (_ds)) 587 588 #define dsa_switch_for_each_available_port(_dp, _ds) \ 589 dsa_switch_for_each_port((_dp), (_ds)) \ 590 if (!dsa_port_is_unused((_dp))) 591 592 #define dsa_switch_for_each_user_port(_dp, _ds) \ 593 dsa_switch_for_each_port((_dp), (_ds)) \ 594 if (dsa_port_is_user((_dp))) 595 596 #define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \ 597 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 598 if (dsa_port_is_user((_dp))) 599 600 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 601 dsa_switch_for_each_port((_dp), (_ds)) \ 602 if (dsa_port_is_cpu((_dp))) 603 604 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 605 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 606 if (dsa_port_is_cpu((_dp))) 607 608 static inline u32 dsa_user_ports(struct dsa_switch *ds) 609 { 610 struct dsa_port *dp; 611 u32 mask = 0; 612 613 dsa_switch_for_each_user_port(dp, ds) 614 mask |= BIT(dp->index); 615 616 return mask; 617 } 618 619 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 620 { 621 struct dsa_port *cpu_dp; 622 u32 mask = 0; 623 624 dsa_switch_for_each_cpu_port(cpu_dp, ds) 625 mask |= BIT(cpu_dp->index); 626 627 return mask; 628 } 629 630 /* Return the local port used to reach an arbitrary switch device */ 631 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 632 { 633 struct dsa_switch_tree *dst = ds->dst; 634 struct dsa_link *dl; 635 636 list_for_each_entry(dl, &dst->rtable, list) 637 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 638 return dl->dp->index; 639 640 return ds->num_ports; 641 } 642 643 /* Return the local port used to reach an arbitrary switch port */ 644 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 645 int port) 646 { 647 if (device == ds->index) 648 return port; 649 else 650 return dsa_routing_port(ds, device); 651 } 652 653 /* Return the local port used to reach the dedicated CPU port */ 654 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 655 { 656 const struct dsa_port *dp = dsa_to_port(ds, port); 657 const struct dsa_port *cpu_dp = dp->cpu_dp; 658 659 if (!cpu_dp) 660 return port; 661 662 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 663 } 664 665 /* Return true if this is the local port used to reach the CPU port */ 666 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 667 { 668 if (dsa_is_unused_port(ds, port)) 669 return false; 670 671 return port == dsa_upstream_port(ds, port); 672 } 673 674 /* Return true if this is a DSA port leading away from the CPU */ 675 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 676 { 677 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 678 } 679 680 /* Return the local port used to reach the CPU port */ 681 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 682 { 683 struct dsa_port *dp; 684 685 dsa_switch_for_each_available_port(dp, ds) { 686 return dsa_upstream_port(ds, dp->index); 687 } 688 689 return ds->num_ports; 690 } 691 692 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 693 * that the routing port from @downstream_ds to @upstream_ds is also the port 694 * which @downstream_ds uses to reach its dedicated CPU. 695 */ 696 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 697 struct dsa_switch *downstream_ds) 698 { 699 int routing_port; 700 701 if (upstream_ds == downstream_ds) 702 return true; 703 704 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 705 706 return dsa_is_upstream_port(downstream_ds, routing_port); 707 } 708 709 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 710 { 711 const struct dsa_switch *ds = dp->ds; 712 713 if (ds->vlan_filtering_is_global) 714 return ds->vlan_filtering; 715 else 716 return dp->vlan_filtering; 717 } 718 719 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 720 { 721 return dp->lag ? dp->lag->id : 0; 722 } 723 724 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 725 { 726 return dp->lag ? dp->lag->dev : NULL; 727 } 728 729 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 730 const struct dsa_lag *lag) 731 { 732 return dsa_port_lag_dev_get(dp) == lag->dev; 733 } 734 735 static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 736 { 737 if (dp->cpu_port_in_lag) 738 return dsa_port_lag_dev_get(dp->cpu_dp); 739 740 return dp->cpu_dp->conduit; 741 } 742 743 static inline 744 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 745 { 746 if (!dp->bridge) 747 return NULL; 748 749 if (dp->lag) 750 return dp->lag->dev; 751 else if (dp->hsr_dev) 752 return dp->hsr_dev; 753 754 return dp->user; 755 } 756 757 static inline struct net_device * 758 dsa_port_bridge_dev_get(const struct dsa_port *dp) 759 { 760 return dp->bridge ? dp->bridge->dev : NULL; 761 } 762 763 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 764 { 765 return dp->bridge ? dp->bridge->num : 0; 766 } 767 768 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 769 const struct dsa_port *b) 770 { 771 struct net_device *br_a = dsa_port_bridge_dev_get(a); 772 struct net_device *br_b = dsa_port_bridge_dev_get(b); 773 774 /* Standalone ports are not in the same bridge with one another */ 775 return (!br_a || !br_b) ? false : (br_a == br_b); 776 } 777 778 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 779 const struct net_device *dev) 780 { 781 return dsa_port_to_bridge_port(dp) == dev; 782 } 783 784 static inline bool 785 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 786 const struct net_device *bridge_dev) 787 { 788 /* DSA ports connected to a bridge, and event was emitted 789 * for the bridge. 790 */ 791 return dsa_port_bridge_dev_get(dp) == bridge_dev; 792 } 793 794 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 795 const struct dsa_bridge *bridge) 796 { 797 return dsa_port_bridge_dev_get(dp) == bridge->dev; 798 } 799 800 /* Returns true if any port of this tree offloads the given net_device */ 801 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 802 const struct net_device *dev) 803 { 804 struct dsa_port *dp; 805 806 list_for_each_entry(dp, &dst->ports, list) 807 if (dsa_port_offloads_bridge_port(dp, dev)) 808 return true; 809 810 return false; 811 } 812 813 /* Returns true if any port of this tree offloads the given bridge */ 814 static inline bool 815 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 816 const struct net_device *bridge_dev) 817 { 818 struct dsa_port *dp; 819 820 list_for_each_entry(dp, &dst->ports, list) 821 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 822 return true; 823 824 return false; 825 } 826 827 static inline bool dsa_port_tree_same(const struct dsa_port *a, 828 const struct dsa_port *b) 829 { 830 return a->ds->dst == b->ds->dst; 831 } 832 833 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 834 bool is_static, void *data); 835 struct dsa_switch_ops { 836 /* 837 * Tagging protocol helpers called for the CPU ports and DSA links. 838 * @get_tag_protocol retrieves the initial tagging protocol and is 839 * mandatory. Switches which can operate using multiple tagging 840 * protocols should implement @change_tag_protocol and report in 841 * @get_tag_protocol the tagger in current use. 842 */ 843 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 844 int port, 845 enum dsa_tag_protocol mprot); 846 int (*change_tag_protocol)(struct dsa_switch *ds, 847 enum dsa_tag_protocol proto); 848 /* 849 * Method for switch drivers to connect to the tagging protocol driver 850 * in current use. The switch driver can provide handlers for certain 851 * types of packets for switch management. 852 */ 853 int (*connect_tag_protocol)(struct dsa_switch *ds, 854 enum dsa_tag_protocol proto); 855 856 int (*port_change_conduit)(struct dsa_switch *ds, int port, 857 struct net_device *conduit, 858 struct netlink_ext_ack *extack); 859 860 /* Optional switch-wide initialization and destruction methods */ 861 int (*setup)(struct dsa_switch *ds); 862 void (*teardown)(struct dsa_switch *ds); 863 864 /* Per-port initialization and destruction methods. Mandatory if the 865 * driver registers devlink port regions, optional otherwise. 866 */ 867 int (*port_setup)(struct dsa_switch *ds, int port); 868 void (*port_teardown)(struct dsa_switch *ds, int port); 869 870 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 871 872 /* 873 * Access to the switch's PHY registers. 874 */ 875 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 876 int (*phy_write)(struct dsa_switch *ds, int port, 877 int regnum, u16 val); 878 879 /* 880 * PHYLINK integration 881 */ 882 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 883 struct phylink_config *config); 884 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds, 885 int port, 886 phy_interface_t iface); 887 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 888 unsigned int mode, 889 const struct phylink_link_state *state); 890 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 891 unsigned int mode, 892 phy_interface_t interface); 893 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 894 unsigned int mode, 895 phy_interface_t interface, 896 struct phy_device *phydev, 897 int speed, int duplex, 898 bool tx_pause, bool rx_pause); 899 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 900 struct phylink_link_state *state); 901 /* 902 * Port statistics counters. 903 */ 904 void (*get_strings)(struct dsa_switch *ds, int port, 905 u32 stringset, uint8_t *data); 906 void (*get_ethtool_stats)(struct dsa_switch *ds, 907 int port, uint64_t *data); 908 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 909 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 910 int port, uint64_t *data); 911 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 912 struct ethtool_eth_phy_stats *phy_stats); 913 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 914 struct ethtool_eth_mac_stats *mac_stats); 915 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 916 struct ethtool_eth_ctrl_stats *ctrl_stats); 917 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 918 struct ethtool_rmon_stats *rmon_stats, 919 const struct ethtool_rmon_hist_range **ranges); 920 void (*get_stats64)(struct dsa_switch *ds, int port, 921 struct rtnl_link_stats64 *s); 922 void (*get_pause_stats)(struct dsa_switch *ds, int port, 923 struct ethtool_pause_stats *pause_stats); 924 void (*self_test)(struct dsa_switch *ds, int port, 925 struct ethtool_test *etest, u64 *data); 926 927 /* 928 * ethtool Wake-on-LAN 929 */ 930 void (*get_wol)(struct dsa_switch *ds, int port, 931 struct ethtool_wolinfo *w); 932 int (*set_wol)(struct dsa_switch *ds, int port, 933 struct ethtool_wolinfo *w); 934 935 /* 936 * ethtool timestamp info 937 */ 938 int (*get_ts_info)(struct dsa_switch *ds, int port, 939 struct kernel_ethtool_ts_info *ts); 940 941 /* 942 * ethtool MAC merge layer 943 */ 944 int (*get_mm)(struct dsa_switch *ds, int port, 945 struct ethtool_mm_state *state); 946 int (*set_mm)(struct dsa_switch *ds, int port, 947 struct ethtool_mm_cfg *cfg, 948 struct netlink_ext_ack *extack); 949 void (*get_mm_stats)(struct dsa_switch *ds, int port, 950 struct ethtool_mm_stats *stats); 951 952 /* 953 * DCB ops 954 */ 955 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 956 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 957 u8 prio); 958 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 959 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 960 u8 prio); 961 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 962 u8 prio); 963 int (*port_set_apptrust)(struct dsa_switch *ds, int port, 964 const u8 *sel, int nsel); 965 int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel, 966 int *nsel); 967 968 /* 969 * Suspend and resume 970 */ 971 int (*suspend)(struct dsa_switch *ds); 972 int (*resume)(struct dsa_switch *ds); 973 974 /* 975 * Port enable/disable 976 */ 977 int (*port_enable)(struct dsa_switch *ds, int port, 978 struct phy_device *phy); 979 void (*port_disable)(struct dsa_switch *ds, int port); 980 981 982 /* 983 * Notification for MAC address changes on user ports. Drivers can 984 * currently only veto operations. They should not use the method to 985 * program the hardware, since the operation is not rolled back in case 986 * of other errors. 987 */ 988 int (*port_set_mac_address)(struct dsa_switch *ds, int port, 989 const unsigned char *addr); 990 991 /* 992 * Compatibility between device trees defining multiple CPU ports and 993 * drivers which are not OK to use by default the numerically smallest 994 * CPU port of a switch for its local ports. This can return NULL, 995 * meaning "don't know/don't care". 996 */ 997 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds); 998 999 /* 1000 * Port's MAC EEE settings 1001 */ 1002 int (*set_mac_eee)(struct dsa_switch *ds, int port, 1003 struct ethtool_keee *e); 1004 int (*get_mac_eee)(struct dsa_switch *ds, int port, 1005 struct ethtool_keee *e); 1006 1007 /* EEPROM access */ 1008 int (*get_eeprom_len)(struct dsa_switch *ds); 1009 int (*get_eeprom)(struct dsa_switch *ds, 1010 struct ethtool_eeprom *eeprom, u8 *data); 1011 int (*set_eeprom)(struct dsa_switch *ds, 1012 struct ethtool_eeprom *eeprom, u8 *data); 1013 1014 /* 1015 * Register access. 1016 */ 1017 int (*get_regs_len)(struct dsa_switch *ds, int port); 1018 void (*get_regs)(struct dsa_switch *ds, int port, 1019 struct ethtool_regs *regs, void *p); 1020 1021 /* 1022 * Upper device tracking. 1023 */ 1024 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 1025 struct netdev_notifier_changeupper_info *info); 1026 1027 /* 1028 * Bridge integration 1029 */ 1030 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 1031 int (*port_bridge_join)(struct dsa_switch *ds, int port, 1032 struct dsa_bridge bridge, 1033 bool *tx_fwd_offload, 1034 struct netlink_ext_ack *extack); 1035 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1036 struct dsa_bridge bridge); 1037 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1038 u8 state); 1039 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1040 const struct switchdev_mst_state *state); 1041 void (*port_fast_age)(struct dsa_switch *ds, int port); 1042 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1043 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1044 struct switchdev_brport_flags flags, 1045 struct netlink_ext_ack *extack); 1046 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1047 struct switchdev_brport_flags flags, 1048 struct netlink_ext_ack *extack); 1049 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1050 bool uc, bool mc); 1051 1052 /* 1053 * VLAN support 1054 */ 1055 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1056 bool vlan_filtering, 1057 struct netlink_ext_ack *extack); 1058 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1059 const struct switchdev_obj_port_vlan *vlan, 1060 struct netlink_ext_ack *extack); 1061 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1062 const struct switchdev_obj_port_vlan *vlan); 1063 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1064 const struct switchdev_vlan_msti *msti); 1065 1066 /* 1067 * Forwarding database 1068 */ 1069 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1070 const unsigned char *addr, u16 vid, 1071 struct dsa_db db); 1072 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1073 const unsigned char *addr, u16 vid, 1074 struct dsa_db db); 1075 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1076 dsa_fdb_dump_cb_t *cb, void *data); 1077 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1078 const unsigned char *addr, u16 vid, 1079 struct dsa_db db); 1080 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1081 const unsigned char *addr, u16 vid, 1082 struct dsa_db db); 1083 1084 /* 1085 * Multicast database 1086 */ 1087 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1088 const struct switchdev_obj_port_mdb *mdb, 1089 struct dsa_db db); 1090 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1091 const struct switchdev_obj_port_mdb *mdb, 1092 struct dsa_db db); 1093 /* 1094 * RXNFC 1095 */ 1096 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1097 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1098 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1099 struct ethtool_rxnfc *nfc); 1100 1101 /* 1102 * TC integration 1103 */ 1104 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1105 struct flow_cls_offload *cls, bool ingress); 1106 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1107 struct flow_cls_offload *cls, bool ingress); 1108 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1109 struct flow_cls_offload *cls, bool ingress); 1110 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1111 struct dsa_mall_mirror_tc_entry *mirror, 1112 bool ingress, struct netlink_ext_ack *extack); 1113 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1114 struct dsa_mall_mirror_tc_entry *mirror); 1115 int (*port_policer_add)(struct dsa_switch *ds, int port, 1116 struct dsa_mall_policer_tc_entry *policer); 1117 void (*port_policer_del)(struct dsa_switch *ds, int port); 1118 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1119 enum tc_setup_type type, void *type_data); 1120 1121 /* 1122 * Cross-chip operations 1123 */ 1124 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1125 int sw_index, int port, 1126 struct dsa_bridge bridge, 1127 struct netlink_ext_ack *extack); 1128 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1129 int sw_index, int port, 1130 struct dsa_bridge bridge); 1131 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1132 int port); 1133 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1134 int port, struct dsa_lag lag, 1135 struct netdev_lag_upper_info *info, 1136 struct netlink_ext_ack *extack); 1137 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1138 int port, struct dsa_lag lag); 1139 1140 /* 1141 * PTP functionality 1142 */ 1143 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1144 struct ifreq *ifr); 1145 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1146 struct ifreq *ifr); 1147 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1148 struct sk_buff *skb); 1149 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1150 struct sk_buff *skb, unsigned int type); 1151 1152 /* Devlink parameters, etc */ 1153 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1154 struct devlink_param_gset_ctx *ctx); 1155 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1156 struct devlink_param_gset_ctx *ctx); 1157 int (*devlink_info_get)(struct dsa_switch *ds, 1158 struct devlink_info_req *req, 1159 struct netlink_ext_ack *extack); 1160 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1161 unsigned int sb_index, u16 pool_index, 1162 struct devlink_sb_pool_info *pool_info); 1163 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1164 u16 pool_index, u32 size, 1165 enum devlink_sb_threshold_type threshold_type, 1166 struct netlink_ext_ack *extack); 1167 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1168 unsigned int sb_index, u16 pool_index, 1169 u32 *p_threshold); 1170 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1171 unsigned int sb_index, u16 pool_index, 1172 u32 threshold, 1173 struct netlink_ext_ack *extack); 1174 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1175 unsigned int sb_index, u16 tc_index, 1176 enum devlink_sb_pool_type pool_type, 1177 u16 *p_pool_index, u32 *p_threshold); 1178 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1179 unsigned int sb_index, u16 tc_index, 1180 enum devlink_sb_pool_type pool_type, 1181 u16 pool_index, u32 threshold, 1182 struct netlink_ext_ack *extack); 1183 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1184 unsigned int sb_index); 1185 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1186 unsigned int sb_index); 1187 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1188 unsigned int sb_index, u16 pool_index, 1189 u32 *p_cur, u32 *p_max); 1190 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1191 unsigned int sb_index, u16 tc_index, 1192 enum devlink_sb_pool_type pool_type, 1193 u32 *p_cur, u32 *p_max); 1194 1195 /* 1196 * MTU change functionality. Switches can also adjust their MRU through 1197 * this method. By MTU, one understands the SDU (L2 payload) length. 1198 * If the switch needs to account for the DSA tag on the CPU port, this 1199 * method needs to do so privately. 1200 */ 1201 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1202 int new_mtu); 1203 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1204 1205 /* 1206 * LAG integration 1207 */ 1208 int (*port_lag_change)(struct dsa_switch *ds, int port); 1209 int (*port_lag_join)(struct dsa_switch *ds, int port, 1210 struct dsa_lag lag, 1211 struct netdev_lag_upper_info *info, 1212 struct netlink_ext_ack *extack); 1213 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1214 struct dsa_lag lag); 1215 1216 /* 1217 * HSR integration 1218 */ 1219 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1220 struct net_device *hsr, 1221 struct netlink_ext_ack *extack); 1222 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1223 struct net_device *hsr); 1224 1225 /* 1226 * MRP integration 1227 */ 1228 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1229 const struct switchdev_obj_mrp *mrp); 1230 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1231 const struct switchdev_obj_mrp *mrp); 1232 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1233 const struct switchdev_obj_ring_role_mrp *mrp); 1234 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1235 const struct switchdev_obj_ring_role_mrp *mrp); 1236 1237 /* 1238 * tag_8021q operations 1239 */ 1240 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1241 u16 flags); 1242 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1243 1244 /* 1245 * DSA conduit tracking operations 1246 */ 1247 void (*conduit_state_change)(struct dsa_switch *ds, 1248 const struct net_device *conduit, 1249 bool operational); 1250 }; 1251 1252 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1253 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1254 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1255 1256 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1257 struct devlink_param_gset_ctx *ctx); 1258 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1259 struct devlink_param_gset_ctx *ctx, 1260 struct netlink_ext_ack *extack); 1261 int dsa_devlink_params_register(struct dsa_switch *ds, 1262 const struct devlink_param *params, 1263 size_t params_count); 1264 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1265 const struct devlink_param *params, 1266 size_t params_count); 1267 int dsa_devlink_resource_register(struct dsa_switch *ds, 1268 const char *resource_name, 1269 u64 resource_size, 1270 u64 resource_id, 1271 u64 parent_resource_id, 1272 const struct devlink_resource_size_params *size_params); 1273 1274 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1275 1276 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1277 u64 resource_id, 1278 devlink_resource_occ_get_t *occ_get, 1279 void *occ_get_priv); 1280 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1281 u64 resource_id); 1282 struct devlink_region * 1283 dsa_devlink_region_create(struct dsa_switch *ds, 1284 const struct devlink_region_ops *ops, 1285 u32 region_max_snapshots, u64 region_size); 1286 struct devlink_region * 1287 dsa_devlink_port_region_create(struct dsa_switch *ds, 1288 int port, 1289 const struct devlink_port_region_ops *ops, 1290 u32 region_max_snapshots, u64 region_size); 1291 void dsa_devlink_region_destroy(struct devlink_region *region); 1292 1293 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1294 1295 struct dsa_devlink_priv { 1296 struct dsa_switch *ds; 1297 }; 1298 1299 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1300 { 1301 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1302 1303 return dl_priv->ds; 1304 } 1305 1306 static inline 1307 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1308 { 1309 struct devlink *dl = port->devlink; 1310 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1311 1312 return dl_priv->ds; 1313 } 1314 1315 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1316 { 1317 return port->index; 1318 } 1319 1320 struct dsa_switch_driver { 1321 struct list_head list; 1322 const struct dsa_switch_ops *ops; 1323 }; 1324 1325 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1326 const unsigned char *addr, u16 vid, 1327 struct dsa_db db); 1328 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1329 const struct switchdev_obj_port_mdb *mdb, 1330 struct dsa_db db); 1331 1332 /* Keep inline for faster access in hot path */ 1333 static inline bool netdev_uses_dsa(const struct net_device *dev) 1334 { 1335 #if IS_ENABLED(CONFIG_NET_DSA) 1336 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1337 #endif 1338 return false; 1339 } 1340 1341 /* All DSA tags that push the EtherType to the right (basically all except tail 1342 * tags, which don't break dissection) can be treated the same from the 1343 * perspective of the flow dissector. 1344 * 1345 * We need to return: 1346 * - offset: the (B - A) difference between: 1347 * A. the position of the real EtherType and 1348 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1349 * after the normal EtherType was supposed to be) 1350 * The offset in bytes is exactly equal to the tagger overhead (and half of 1351 * that, in __be16 shorts). 1352 * 1353 * - proto: the value of the real EtherType. 1354 */ 1355 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1356 __be16 *proto, int *offset) 1357 { 1358 #if IS_ENABLED(CONFIG_NET_DSA) 1359 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1360 int tag_len = ops->needed_headroom; 1361 1362 *offset = tag_len; 1363 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1364 #endif 1365 } 1366 1367 void dsa_unregister_switch(struct dsa_switch *ds); 1368 int dsa_register_switch(struct dsa_switch *ds); 1369 void dsa_switch_shutdown(struct dsa_switch *ds); 1370 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1371 void dsa_flush_workqueue(void); 1372 #ifdef CONFIG_PM_SLEEP 1373 int dsa_switch_suspend(struct dsa_switch *ds); 1374 int dsa_switch_resume(struct dsa_switch *ds); 1375 #else 1376 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1377 { 1378 return 0; 1379 } 1380 static inline int dsa_switch_resume(struct dsa_switch *ds) 1381 { 1382 return 0; 1383 } 1384 #endif /* CONFIG_PM_SLEEP */ 1385 1386 #if IS_ENABLED(CONFIG_NET_DSA) 1387 bool dsa_user_dev_check(const struct net_device *dev); 1388 #else 1389 static inline bool dsa_user_dev_check(const struct net_device *dev) 1390 { 1391 return false; 1392 } 1393 #endif 1394 1395 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1396 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1397 1398 #endif 1399