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 struct phy_device; 28 struct fixed_phy_status; 29 struct 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 60 enum 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 91 struct dsa_switch; 92 93 struct 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 master 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_master; 110 }; 111 112 struct 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 }; 119 120 struct 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)) 179 180 static 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 } 186 187 static 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 */ 203 enum dsa_port_mall_action_type { 204 DSA_PORT_MALL_MIRROR, 205 DSA_PORT_MALL_POLICER, 206 }; 207 208 /* TC mirroring entry */ 209 struct dsa_mall_mirror_tc_entry { 210 u8 to_local_port; 211 bool ingress; 212 }; 213 214 /* TC port policer entry */ 215 struct dsa_mall_policer_tc_entry { 216 u32 burst; 217 u64 rate_bytes_per_sec; 218 }; 219 220 /* TC matchall entry */ 221 struct 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 }; 230 231 struct dsa_bridge { 232 struct net_device *dev; 233 unsigned int num; 234 bool tx_fwd_offload; 235 refcount_t refcount; 236 }; 237 238 struct dsa_port { 239 /* A CPU port is physically connected to a master device. 240 * A user port exposed to userspace has a slave device. 241 */ 242 union { 243 struct net_device *master; 244 struct net_device *slave; 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 master 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 /* Master state bits, valid only on CPU ports */ 285 u8 master_admin_up:1; 286 u8 master_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 master 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 /* List of VLANs that CPU and DSA ports are members of. */ 318 struct mutex vlans_lock; 319 struct list_head vlans; 320 }; 321 322 /* TODO: ideally DSA ports would have a single dp->link_dp member, 323 * and no dst->rtable nor this struct dsa_link would be needed, 324 * but this would require some more complex tree walking, 325 * so keep it stupid at the moment and list them all. 326 */ 327 struct dsa_link { 328 struct dsa_port *dp; 329 struct dsa_port *link_dp; 330 struct list_head list; 331 }; 332 333 enum dsa_db_type { 334 DSA_DB_PORT, 335 DSA_DB_LAG, 336 DSA_DB_BRIDGE, 337 }; 338 339 struct dsa_db { 340 enum dsa_db_type type; 341 342 union { 343 const struct dsa_port *dp; 344 struct dsa_lag lag; 345 struct dsa_bridge bridge; 346 }; 347 }; 348 349 struct dsa_mac_addr { 350 unsigned char addr[ETH_ALEN]; 351 u16 vid; 352 refcount_t refcount; 353 struct list_head list; 354 struct dsa_db db; 355 }; 356 357 struct dsa_vlan { 358 u16 vid; 359 refcount_t refcount; 360 struct list_head list; 361 }; 362 363 struct dsa_switch { 364 struct device *dev; 365 366 /* 367 * Parent switch tree, and switch index. 368 */ 369 struct dsa_switch_tree *dst; 370 unsigned int index; 371 372 /* Warning: the following bit fields are not atomic, and updating them 373 * can only be done from code paths where concurrency is not possible 374 * (probe time or under rtnl_lock). 375 */ 376 u32 setup:1; 377 378 /* Disallow bridge core from requesting different VLAN awareness 379 * settings on ports if not hardware-supported 380 */ 381 u32 vlan_filtering_is_global:1; 382 383 /* Keep VLAN filtering enabled on ports not offloading any upper */ 384 u32 needs_standalone_vlan_filtering:1; 385 386 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 387 * that have vlan_filtering=0. All drivers should ideally set this (and 388 * then the option would get removed), but it is unknown whether this 389 * would break things or not. 390 */ 391 u32 configure_vlan_while_not_filtering:1; 392 393 /* If the switch driver always programs the CPU port as egress tagged 394 * despite the VLAN configuration indicating otherwise, then setting 395 * @untag_bridge_pvid will force the DSA receive path to pop the 396 * bridge's default_pvid VLAN tagged frames to offer a consistent 397 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge 398 * device. 399 */ 400 u32 untag_bridge_pvid:1; 401 402 /* Let DSA manage the FDB entries towards the 403 * CPU, based on the software bridge database. 404 */ 405 u32 assisted_learning_on_cpu_port:1; 406 407 /* In case vlan_filtering_is_global is set, the VLAN awareness state 408 * should be retrieved from here and not from the per-port settings. 409 */ 410 u32 vlan_filtering:1; 411 412 /* For switches that only have the MRU configurable. To ensure the 413 * configured MTU is not exceeded, normalization of MRU on all bridged 414 * interfaces is needed. 415 */ 416 u32 mtu_enforcement_ingress:1; 417 418 /* Drivers that isolate the FDBs of multiple bridges must set this 419 * to true to receive the bridge as an argument in .port_fdb_{add,del} 420 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 421 * passed as zero. 422 */ 423 u32 fdb_isolation:1; 424 425 /* Listener for switch fabric events */ 426 struct notifier_block nb; 427 428 /* 429 * Give the switch driver somewhere to hang its private data 430 * structure. 431 */ 432 void *priv; 433 434 void *tagger_data; 435 436 /* 437 * Configuration data for this switch. 438 */ 439 struct dsa_chip_data *cd; 440 441 /* 442 * The switch operations. 443 */ 444 const struct dsa_switch_ops *ops; 445 446 /* 447 * Slave mii_bus and devices for the individual ports. 448 */ 449 u32 phys_mii_mask; 450 struct mii_bus *slave_mii_bus; 451 452 /* Ageing Time limits in msecs */ 453 unsigned int ageing_time_min; 454 unsigned int ageing_time_max; 455 456 /* Storage for drivers using tag_8021q */ 457 struct dsa_8021q_context *tag_8021q_ctx; 458 459 /* devlink used to represent this switch device */ 460 struct devlink *devlink; 461 462 /* Number of switch port queues */ 463 unsigned int num_tx_queues; 464 465 /* Drivers that benefit from having an ID associated with each 466 * offloaded LAG should set this to the maximum number of 467 * supported IDs. DSA will then maintain a mapping of _at 468 * least_ these many IDs, accessible to drivers via 469 * dsa_lag_id(). 470 */ 471 unsigned int num_lag_ids; 472 473 /* Drivers that support bridge forwarding offload or FDB isolation 474 * should set this to the maximum number of bridges spanning the same 475 * switch tree (or all trees, in the case of cross-tree bridging 476 * support) that can be offloaded. 477 */ 478 unsigned int max_num_bridges; 479 480 unsigned int num_ports; 481 }; 482 483 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 484 { 485 struct dsa_switch_tree *dst = ds->dst; 486 struct dsa_port *dp; 487 488 list_for_each_entry(dp, &dst->ports, list) 489 if (dp->ds == ds && dp->index == p) 490 return dp; 491 492 return NULL; 493 } 494 495 static inline bool dsa_port_is_dsa(struct dsa_port *port) 496 { 497 return port->type == DSA_PORT_TYPE_DSA; 498 } 499 500 static inline bool dsa_port_is_cpu(struct dsa_port *port) 501 { 502 return port->type == DSA_PORT_TYPE_CPU; 503 } 504 505 static inline bool dsa_port_is_user(struct dsa_port *dp) 506 { 507 return dp->type == DSA_PORT_TYPE_USER; 508 } 509 510 static inline bool dsa_port_is_unused(struct dsa_port *dp) 511 { 512 return dp->type == DSA_PORT_TYPE_UNUSED; 513 } 514 515 static inline bool dsa_port_master_is_operational(struct dsa_port *dp) 516 { 517 return dsa_port_is_cpu(dp) && dp->master_admin_up && 518 dp->master_oper_up; 519 } 520 521 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 522 { 523 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 524 } 525 526 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 527 { 528 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 529 } 530 531 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 532 { 533 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 534 } 535 536 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 537 { 538 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 539 } 540 541 #define dsa_tree_for_each_user_port(_dp, _dst) \ 542 list_for_each_entry((_dp), &(_dst)->ports, list) \ 543 if (dsa_port_is_user((_dp))) 544 545 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 546 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 547 if (dsa_port_is_user((_dp))) 548 549 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 550 list_for_each_entry((_dp), &(_dst)->ports, list) \ 551 if (dsa_port_is_cpu((_dp))) 552 553 #define dsa_switch_for_each_port(_dp, _ds) \ 554 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 555 if ((_dp)->ds == (_ds)) 556 557 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 558 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 559 if ((_dp)->ds == (_ds)) 560 561 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 562 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 563 if ((_dp)->ds == (_ds)) 564 565 #define dsa_switch_for_each_available_port(_dp, _ds) \ 566 dsa_switch_for_each_port((_dp), (_ds)) \ 567 if (!dsa_port_is_unused((_dp))) 568 569 #define dsa_switch_for_each_user_port(_dp, _ds) \ 570 dsa_switch_for_each_port((_dp), (_ds)) \ 571 if (dsa_port_is_user((_dp))) 572 573 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 574 dsa_switch_for_each_port((_dp), (_ds)) \ 575 if (dsa_port_is_cpu((_dp))) 576 577 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 578 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 579 if (dsa_port_is_cpu((_dp))) 580 581 static inline u32 dsa_user_ports(struct dsa_switch *ds) 582 { 583 struct dsa_port *dp; 584 u32 mask = 0; 585 586 dsa_switch_for_each_user_port(dp, ds) 587 mask |= BIT(dp->index); 588 589 return mask; 590 } 591 592 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 593 { 594 struct dsa_port *cpu_dp; 595 u32 mask = 0; 596 597 dsa_switch_for_each_cpu_port(cpu_dp, ds) 598 mask |= BIT(cpu_dp->index); 599 600 return mask; 601 } 602 603 /* Return the local port used to reach an arbitrary switch device */ 604 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 605 { 606 struct dsa_switch_tree *dst = ds->dst; 607 struct dsa_link *dl; 608 609 list_for_each_entry(dl, &dst->rtable, list) 610 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 611 return dl->dp->index; 612 613 return ds->num_ports; 614 } 615 616 /* Return the local port used to reach an arbitrary switch port */ 617 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 618 int port) 619 { 620 if (device == ds->index) 621 return port; 622 else 623 return dsa_routing_port(ds, device); 624 } 625 626 /* Return the local port used to reach the dedicated CPU port */ 627 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 628 { 629 const struct dsa_port *dp = dsa_to_port(ds, port); 630 const struct dsa_port *cpu_dp = dp->cpu_dp; 631 632 if (!cpu_dp) 633 return port; 634 635 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 636 } 637 638 /* Return true if this is the local port used to reach the CPU port */ 639 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 640 { 641 if (dsa_is_unused_port(ds, port)) 642 return false; 643 644 return port == dsa_upstream_port(ds, port); 645 } 646 647 /* Return true if this is a DSA port leading away from the CPU */ 648 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 649 { 650 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 651 } 652 653 /* Return the local port used to reach the CPU port */ 654 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 655 { 656 struct dsa_port *dp; 657 658 dsa_switch_for_each_available_port(dp, ds) { 659 return dsa_upstream_port(ds, dp->index); 660 } 661 662 return ds->num_ports; 663 } 664 665 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 666 * that the routing port from @downstream_ds to @upstream_ds is also the port 667 * which @downstream_ds uses to reach its dedicated CPU. 668 */ 669 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 670 struct dsa_switch *downstream_ds) 671 { 672 int routing_port; 673 674 if (upstream_ds == downstream_ds) 675 return true; 676 677 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 678 679 return dsa_is_upstream_port(downstream_ds, routing_port); 680 } 681 682 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 683 { 684 const struct dsa_switch *ds = dp->ds; 685 686 if (ds->vlan_filtering_is_global) 687 return ds->vlan_filtering; 688 else 689 return dp->vlan_filtering; 690 } 691 692 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 693 { 694 return dp->lag ? dp->lag->id : 0; 695 } 696 697 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 698 { 699 return dp->lag ? dp->lag->dev : NULL; 700 } 701 702 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 703 const struct dsa_lag *lag) 704 { 705 return dsa_port_lag_dev_get(dp) == lag->dev; 706 } 707 708 static inline struct net_device *dsa_port_to_master(const struct dsa_port *dp) 709 { 710 if (dp->cpu_port_in_lag) 711 return dsa_port_lag_dev_get(dp->cpu_dp); 712 713 return dp->cpu_dp->master; 714 } 715 716 static inline 717 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 718 { 719 if (!dp->bridge) 720 return NULL; 721 722 if (dp->lag) 723 return dp->lag->dev; 724 else if (dp->hsr_dev) 725 return dp->hsr_dev; 726 727 return dp->slave; 728 } 729 730 static inline struct net_device * 731 dsa_port_bridge_dev_get(const struct dsa_port *dp) 732 { 733 return dp->bridge ? dp->bridge->dev : NULL; 734 } 735 736 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 737 { 738 return dp->bridge ? dp->bridge->num : 0; 739 } 740 741 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 742 const struct dsa_port *b) 743 { 744 struct net_device *br_a = dsa_port_bridge_dev_get(a); 745 struct net_device *br_b = dsa_port_bridge_dev_get(b); 746 747 /* Standalone ports are not in the same bridge with one another */ 748 return (!br_a || !br_b) ? false : (br_a == br_b); 749 } 750 751 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 752 const struct net_device *dev) 753 { 754 return dsa_port_to_bridge_port(dp) == dev; 755 } 756 757 static inline bool 758 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 759 const struct net_device *bridge_dev) 760 { 761 /* DSA ports connected to a bridge, and event was emitted 762 * for the bridge. 763 */ 764 return dsa_port_bridge_dev_get(dp) == bridge_dev; 765 } 766 767 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 768 const struct dsa_bridge *bridge) 769 { 770 return dsa_port_bridge_dev_get(dp) == bridge->dev; 771 } 772 773 /* Returns true if any port of this tree offloads the given net_device */ 774 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 775 const struct net_device *dev) 776 { 777 struct dsa_port *dp; 778 779 list_for_each_entry(dp, &dst->ports, list) 780 if (dsa_port_offloads_bridge_port(dp, dev)) 781 return true; 782 783 return false; 784 } 785 786 /* Returns true if any port of this tree offloads the given bridge */ 787 static inline bool 788 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 789 const struct net_device *bridge_dev) 790 { 791 struct dsa_port *dp; 792 793 list_for_each_entry(dp, &dst->ports, list) 794 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 795 return true; 796 797 return false; 798 } 799 800 static inline bool dsa_port_tree_same(const struct dsa_port *a, 801 const struct dsa_port *b) 802 { 803 return a->ds->dst == b->ds->dst; 804 } 805 806 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 807 bool is_static, void *data); 808 struct dsa_switch_ops { 809 /* 810 * Tagging protocol helpers called for the CPU ports and DSA links. 811 * @get_tag_protocol retrieves the initial tagging protocol and is 812 * mandatory. Switches which can operate using multiple tagging 813 * protocols should implement @change_tag_protocol and report in 814 * @get_tag_protocol the tagger in current use. 815 */ 816 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 817 int port, 818 enum dsa_tag_protocol mprot); 819 int (*change_tag_protocol)(struct dsa_switch *ds, 820 enum dsa_tag_protocol proto); 821 /* 822 * Method for switch drivers to connect to the tagging protocol driver 823 * in current use. The switch driver can provide handlers for certain 824 * types of packets for switch management. 825 */ 826 int (*connect_tag_protocol)(struct dsa_switch *ds, 827 enum dsa_tag_protocol proto); 828 829 int (*port_change_master)(struct dsa_switch *ds, int port, 830 struct net_device *master, 831 struct netlink_ext_ack *extack); 832 833 /* Optional switch-wide initialization and destruction methods */ 834 int (*setup)(struct dsa_switch *ds); 835 void (*teardown)(struct dsa_switch *ds); 836 837 /* Per-port initialization and destruction methods. Mandatory if the 838 * driver registers devlink port regions, optional otherwise. 839 */ 840 int (*port_setup)(struct dsa_switch *ds, int port); 841 void (*port_teardown)(struct dsa_switch *ds, int port); 842 843 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 844 845 /* 846 * Access to the switch's PHY registers. 847 */ 848 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 849 int (*phy_write)(struct dsa_switch *ds, int port, 850 int regnum, u16 val); 851 852 /* 853 * Link state adjustment (called from libphy) 854 */ 855 void (*adjust_link)(struct dsa_switch *ds, int port, 856 struct phy_device *phydev); 857 void (*fixed_link_update)(struct dsa_switch *ds, int port, 858 struct fixed_phy_status *st); 859 860 /* 861 * PHYLINK integration 862 */ 863 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 864 struct phylink_config *config); 865 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds, 866 int port, 867 phy_interface_t iface); 868 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, 869 struct phylink_link_state *state); 870 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 871 unsigned int mode, 872 const struct phylink_link_state *state); 873 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); 874 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 875 unsigned int mode, 876 phy_interface_t interface); 877 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 878 unsigned int mode, 879 phy_interface_t interface, 880 struct phy_device *phydev, 881 int speed, int duplex, 882 bool tx_pause, bool rx_pause); 883 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 884 struct phylink_link_state *state); 885 /* 886 * Port statistics counters. 887 */ 888 void (*get_strings)(struct dsa_switch *ds, int port, 889 u32 stringset, uint8_t *data); 890 void (*get_ethtool_stats)(struct dsa_switch *ds, 891 int port, uint64_t *data); 892 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 893 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 894 int port, uint64_t *data); 895 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 896 struct ethtool_eth_phy_stats *phy_stats); 897 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 898 struct ethtool_eth_mac_stats *mac_stats); 899 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 900 struct ethtool_eth_ctrl_stats *ctrl_stats); 901 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 902 struct ethtool_rmon_stats *rmon_stats, 903 const struct ethtool_rmon_hist_range **ranges); 904 void (*get_stats64)(struct dsa_switch *ds, int port, 905 struct rtnl_link_stats64 *s); 906 void (*get_pause_stats)(struct dsa_switch *ds, int port, 907 struct ethtool_pause_stats *pause_stats); 908 void (*self_test)(struct dsa_switch *ds, int port, 909 struct ethtool_test *etest, u64 *data); 910 911 /* 912 * ethtool Wake-on-LAN 913 */ 914 void (*get_wol)(struct dsa_switch *ds, int port, 915 struct ethtool_wolinfo *w); 916 int (*set_wol)(struct dsa_switch *ds, int port, 917 struct ethtool_wolinfo *w); 918 919 /* 920 * ethtool timestamp info 921 */ 922 int (*get_ts_info)(struct dsa_switch *ds, int port, 923 struct ethtool_ts_info *ts); 924 925 /* 926 * ethtool MAC merge layer 927 */ 928 int (*get_mm)(struct dsa_switch *ds, int port, 929 struct ethtool_mm_state *state); 930 int (*set_mm)(struct dsa_switch *ds, int port, 931 struct ethtool_mm_cfg *cfg, 932 struct netlink_ext_ack *extack); 933 void (*get_mm_stats)(struct dsa_switch *ds, int port, 934 struct ethtool_mm_stats *stats); 935 936 /* 937 * DCB ops 938 */ 939 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 940 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 941 u8 prio); 942 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 943 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 944 u8 prio); 945 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 946 u8 prio); 947 948 /* 949 * Suspend and resume 950 */ 951 int (*suspend)(struct dsa_switch *ds); 952 int (*resume)(struct dsa_switch *ds); 953 954 /* 955 * Port enable/disable 956 */ 957 int (*port_enable)(struct dsa_switch *ds, int port, 958 struct phy_device *phy); 959 void (*port_disable)(struct dsa_switch *ds, int port); 960 961 /* 962 * Port's MAC EEE settings 963 */ 964 int (*set_mac_eee)(struct dsa_switch *ds, int port, 965 struct ethtool_eee *e); 966 int (*get_mac_eee)(struct dsa_switch *ds, int port, 967 struct ethtool_eee *e); 968 969 /* EEPROM access */ 970 int (*get_eeprom_len)(struct dsa_switch *ds); 971 int (*get_eeprom)(struct dsa_switch *ds, 972 struct ethtool_eeprom *eeprom, u8 *data); 973 int (*set_eeprom)(struct dsa_switch *ds, 974 struct ethtool_eeprom *eeprom, u8 *data); 975 976 /* 977 * Register access. 978 */ 979 int (*get_regs_len)(struct dsa_switch *ds, int port); 980 void (*get_regs)(struct dsa_switch *ds, int port, 981 struct ethtool_regs *regs, void *p); 982 983 /* 984 * Upper device tracking. 985 */ 986 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 987 struct netdev_notifier_changeupper_info *info); 988 989 /* 990 * Bridge integration 991 */ 992 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 993 int (*port_bridge_join)(struct dsa_switch *ds, int port, 994 struct dsa_bridge bridge, 995 bool *tx_fwd_offload, 996 struct netlink_ext_ack *extack); 997 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 998 struct dsa_bridge bridge); 999 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1000 u8 state); 1001 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1002 const struct switchdev_mst_state *state); 1003 void (*port_fast_age)(struct dsa_switch *ds, int port); 1004 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1005 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1006 struct switchdev_brport_flags flags, 1007 struct netlink_ext_ack *extack); 1008 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1009 struct switchdev_brport_flags flags, 1010 struct netlink_ext_ack *extack); 1011 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1012 bool uc, bool mc); 1013 1014 /* 1015 * VLAN support 1016 */ 1017 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1018 bool vlan_filtering, 1019 struct netlink_ext_ack *extack); 1020 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1021 const struct switchdev_obj_port_vlan *vlan, 1022 struct netlink_ext_ack *extack); 1023 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1024 const struct switchdev_obj_port_vlan *vlan); 1025 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1026 const struct switchdev_vlan_msti *msti); 1027 1028 /* 1029 * Forwarding database 1030 */ 1031 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1032 const unsigned char *addr, u16 vid, 1033 struct dsa_db db); 1034 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1035 const unsigned char *addr, u16 vid, 1036 struct dsa_db db); 1037 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1038 dsa_fdb_dump_cb_t *cb, void *data); 1039 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1040 const unsigned char *addr, u16 vid, 1041 struct dsa_db db); 1042 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1043 const unsigned char *addr, u16 vid, 1044 struct dsa_db db); 1045 1046 /* 1047 * Multicast database 1048 */ 1049 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1050 const struct switchdev_obj_port_mdb *mdb, 1051 struct dsa_db db); 1052 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1053 const struct switchdev_obj_port_mdb *mdb, 1054 struct dsa_db db); 1055 /* 1056 * RXNFC 1057 */ 1058 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1059 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1060 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1061 struct ethtool_rxnfc *nfc); 1062 1063 /* 1064 * TC integration 1065 */ 1066 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1067 struct flow_cls_offload *cls, bool ingress); 1068 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1069 struct flow_cls_offload *cls, bool ingress); 1070 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1071 struct flow_cls_offload *cls, bool ingress); 1072 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1073 struct dsa_mall_mirror_tc_entry *mirror, 1074 bool ingress, struct netlink_ext_ack *extack); 1075 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1076 struct dsa_mall_mirror_tc_entry *mirror); 1077 int (*port_policer_add)(struct dsa_switch *ds, int port, 1078 struct dsa_mall_policer_tc_entry *policer); 1079 void (*port_policer_del)(struct dsa_switch *ds, int port); 1080 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1081 enum tc_setup_type type, void *type_data); 1082 1083 /* 1084 * Cross-chip operations 1085 */ 1086 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1087 int sw_index, int port, 1088 struct dsa_bridge bridge, 1089 struct netlink_ext_ack *extack); 1090 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1091 int sw_index, int port, 1092 struct dsa_bridge bridge); 1093 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1094 int port); 1095 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1096 int port, struct dsa_lag lag, 1097 struct netdev_lag_upper_info *info, 1098 struct netlink_ext_ack *extack); 1099 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1100 int port, struct dsa_lag lag); 1101 1102 /* 1103 * PTP functionality 1104 */ 1105 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1106 struct ifreq *ifr); 1107 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1108 struct ifreq *ifr); 1109 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1110 struct sk_buff *skb); 1111 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1112 struct sk_buff *skb, unsigned int type); 1113 1114 /* Devlink parameters, etc */ 1115 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1116 struct devlink_param_gset_ctx *ctx); 1117 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1118 struct devlink_param_gset_ctx *ctx); 1119 int (*devlink_info_get)(struct dsa_switch *ds, 1120 struct devlink_info_req *req, 1121 struct netlink_ext_ack *extack); 1122 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1123 unsigned int sb_index, u16 pool_index, 1124 struct devlink_sb_pool_info *pool_info); 1125 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1126 u16 pool_index, u32 size, 1127 enum devlink_sb_threshold_type threshold_type, 1128 struct netlink_ext_ack *extack); 1129 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1130 unsigned int sb_index, u16 pool_index, 1131 u32 *p_threshold); 1132 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1133 unsigned int sb_index, u16 pool_index, 1134 u32 threshold, 1135 struct netlink_ext_ack *extack); 1136 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1137 unsigned int sb_index, u16 tc_index, 1138 enum devlink_sb_pool_type pool_type, 1139 u16 *p_pool_index, u32 *p_threshold); 1140 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1141 unsigned int sb_index, u16 tc_index, 1142 enum devlink_sb_pool_type pool_type, 1143 u16 pool_index, u32 threshold, 1144 struct netlink_ext_ack *extack); 1145 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1146 unsigned int sb_index); 1147 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1148 unsigned int sb_index); 1149 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1150 unsigned int sb_index, u16 pool_index, 1151 u32 *p_cur, u32 *p_max); 1152 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1153 unsigned int sb_index, u16 tc_index, 1154 enum devlink_sb_pool_type pool_type, 1155 u32 *p_cur, u32 *p_max); 1156 1157 /* 1158 * MTU change functionality. Switches can also adjust their MRU through 1159 * this method. By MTU, one understands the SDU (L2 payload) length. 1160 * If the switch needs to account for the DSA tag on the CPU port, this 1161 * method needs to do so privately. 1162 */ 1163 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1164 int new_mtu); 1165 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1166 1167 /* 1168 * LAG integration 1169 */ 1170 int (*port_lag_change)(struct dsa_switch *ds, int port); 1171 int (*port_lag_join)(struct dsa_switch *ds, int port, 1172 struct dsa_lag lag, 1173 struct netdev_lag_upper_info *info, 1174 struct netlink_ext_ack *extack); 1175 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1176 struct dsa_lag lag); 1177 1178 /* 1179 * HSR integration 1180 */ 1181 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1182 struct net_device *hsr); 1183 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1184 struct net_device *hsr); 1185 1186 /* 1187 * MRP integration 1188 */ 1189 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1190 const struct switchdev_obj_mrp *mrp); 1191 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1192 const struct switchdev_obj_mrp *mrp); 1193 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1194 const struct switchdev_obj_ring_role_mrp *mrp); 1195 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1196 const struct switchdev_obj_ring_role_mrp *mrp); 1197 1198 /* 1199 * tag_8021q operations 1200 */ 1201 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1202 u16 flags); 1203 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1204 1205 /* 1206 * DSA master tracking operations 1207 */ 1208 void (*master_state_change)(struct dsa_switch *ds, 1209 const struct net_device *master, 1210 bool operational); 1211 }; 1212 1213 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1214 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1215 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1216 1217 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1218 struct devlink_param_gset_ctx *ctx); 1219 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1220 struct devlink_param_gset_ctx *ctx); 1221 int dsa_devlink_params_register(struct dsa_switch *ds, 1222 const struct devlink_param *params, 1223 size_t params_count); 1224 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1225 const struct devlink_param *params, 1226 size_t params_count); 1227 int dsa_devlink_resource_register(struct dsa_switch *ds, 1228 const char *resource_name, 1229 u64 resource_size, 1230 u64 resource_id, 1231 u64 parent_resource_id, 1232 const struct devlink_resource_size_params *size_params); 1233 1234 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1235 1236 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1237 u64 resource_id, 1238 devlink_resource_occ_get_t *occ_get, 1239 void *occ_get_priv); 1240 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1241 u64 resource_id); 1242 struct devlink_region * 1243 dsa_devlink_region_create(struct dsa_switch *ds, 1244 const struct devlink_region_ops *ops, 1245 u32 region_max_snapshots, u64 region_size); 1246 struct devlink_region * 1247 dsa_devlink_port_region_create(struct dsa_switch *ds, 1248 int port, 1249 const struct devlink_port_region_ops *ops, 1250 u32 region_max_snapshots, u64 region_size); 1251 void dsa_devlink_region_destroy(struct devlink_region *region); 1252 1253 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1254 1255 struct dsa_devlink_priv { 1256 struct dsa_switch *ds; 1257 }; 1258 1259 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1260 { 1261 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1262 1263 return dl_priv->ds; 1264 } 1265 1266 static inline 1267 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1268 { 1269 struct devlink *dl = port->devlink; 1270 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1271 1272 return dl_priv->ds; 1273 } 1274 1275 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1276 { 1277 return port->index; 1278 } 1279 1280 struct dsa_switch_driver { 1281 struct list_head list; 1282 const struct dsa_switch_ops *ops; 1283 }; 1284 1285 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1286 const unsigned char *addr, u16 vid, 1287 struct dsa_db db); 1288 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1289 const struct switchdev_obj_port_mdb *mdb, 1290 struct dsa_db db); 1291 1292 /* Keep inline for faster access in hot path */ 1293 static inline bool netdev_uses_dsa(const struct net_device *dev) 1294 { 1295 #if IS_ENABLED(CONFIG_NET_DSA) 1296 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1297 #endif 1298 return false; 1299 } 1300 1301 /* All DSA tags that push the EtherType to the right (basically all except tail 1302 * tags, which don't break dissection) can be treated the same from the 1303 * perspective of the flow dissector. 1304 * 1305 * We need to return: 1306 * - offset: the (B - A) difference between: 1307 * A. the position of the real EtherType and 1308 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1309 * after the normal EtherType was supposed to be) 1310 * The offset in bytes is exactly equal to the tagger overhead (and half of 1311 * that, in __be16 shorts). 1312 * 1313 * - proto: the value of the real EtherType. 1314 */ 1315 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1316 __be16 *proto, int *offset) 1317 { 1318 #if IS_ENABLED(CONFIG_NET_DSA) 1319 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1320 int tag_len = ops->needed_headroom; 1321 1322 *offset = tag_len; 1323 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1324 #endif 1325 } 1326 1327 void dsa_unregister_switch(struct dsa_switch *ds); 1328 int dsa_register_switch(struct dsa_switch *ds); 1329 void dsa_switch_shutdown(struct dsa_switch *ds); 1330 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1331 void dsa_flush_workqueue(void); 1332 #ifdef CONFIG_PM_SLEEP 1333 int dsa_switch_suspend(struct dsa_switch *ds); 1334 int dsa_switch_resume(struct dsa_switch *ds); 1335 #else 1336 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1337 { 1338 return 0; 1339 } 1340 static inline int dsa_switch_resume(struct dsa_switch *ds) 1341 { 1342 return 0; 1343 } 1344 #endif /* CONFIG_PM_SLEEP */ 1345 1346 #if IS_ENABLED(CONFIG_NET_DSA) 1347 bool dsa_slave_dev_check(const struct net_device *dev); 1348 #else 1349 static inline bool dsa_slave_dev_check(const struct net_device *dev) 1350 { 1351 return false; 1352 } 1353 #endif 1354 1355 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1356 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1357 1358 #endif 1359