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 #define DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE 29 58 #define DSA_TAG_PROTO_YT921X_VALUE 30 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_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE, 65 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 66 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 67 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 68 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 69 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 70 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 71 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 72 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 73 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 74 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 75 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 76 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 77 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 78 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 79 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 80 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 81 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 82 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 83 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 84 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 85 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 86 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 87 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 88 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 89 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 90 DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE, 91 DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE, 92 }; 93 94 struct dsa_switch; 95 96 struct dsa_device_ops { 97 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 98 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 99 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 100 int *offset); 101 int (*connect)(struct dsa_switch *ds); 102 void (*disconnect)(struct dsa_switch *ds); 103 unsigned int needed_headroom; 104 unsigned int needed_tailroom; 105 const char *name; 106 enum dsa_tag_protocol proto; 107 /* Some tagging protocols either mangle or shift the destination MAC 108 * address, in which case the DSA conduit would drop packets on ingress 109 * if what it understands out of the destination MAC address is not in 110 * its RX filter. 111 */ 112 bool promisc_on_conduit; 113 }; 114 115 struct dsa_lag { 116 struct net_device *dev; 117 unsigned int id; 118 struct mutex fdb_lock; 119 struct list_head fdbs; 120 refcount_t refcount; 121 }; 122 123 struct dsa_switch_tree { 124 struct list_head list; 125 126 /* List of switch ports */ 127 struct list_head ports; 128 129 /* Notifier chain for switch-wide events */ 130 struct raw_notifier_head nh; 131 132 /* Tree identifier */ 133 unsigned int index; 134 135 /* Number of switches attached to this tree */ 136 struct kref refcount; 137 138 /* Maps offloaded LAG netdevs to a zero-based linear ID for 139 * drivers that need it. 140 */ 141 struct dsa_lag **lags; 142 143 /* Tagging protocol operations */ 144 const struct dsa_device_ops *tag_ops; 145 146 /* Default tagging protocol preferred by the switches in this 147 * tree. 148 */ 149 enum dsa_tag_protocol default_proto; 150 151 /* Has this tree been applied to the hardware? */ 152 bool setup; 153 154 /* 155 * Configuration data for the platform device that owns 156 * this dsa switch tree instance. 157 */ 158 struct dsa_platform_data *pd; 159 160 /* List of DSA links composing the routing table */ 161 struct list_head rtable; 162 163 /* Length of "lags" array */ 164 unsigned int lags_len; 165 166 /* Track the largest switch index within a tree */ 167 unsigned int last_switch; 168 }; 169 170 /* LAG IDs are one-based, the dst->lags array is zero-based */ 171 #define dsa_lags_foreach_id(_id, _dst) \ 172 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 173 if ((_dst)->lags[(_id) - 1]) 174 175 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 176 list_for_each_entry((_dp), &(_dst)->ports, list) \ 177 if (dsa_port_offloads_lag((_dp), (_lag))) 178 179 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 180 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 181 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 182 183 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 184 unsigned int id) 185 { 186 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 187 return dst->lags[id - 1]; 188 } 189 190 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 191 struct net_device *lag_dev) 192 { 193 unsigned int id; 194 195 dsa_lags_foreach_id(id, dst) { 196 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 197 198 if (lag->dev == lag_dev) 199 return lag->id; 200 } 201 202 return -ENODEV; 203 } 204 205 /* TC matchall action types */ 206 enum dsa_port_mall_action_type { 207 DSA_PORT_MALL_MIRROR, 208 DSA_PORT_MALL_POLICER, 209 }; 210 211 /* TC mirroring entry */ 212 struct dsa_mall_mirror_tc_entry { 213 u8 to_local_port; 214 bool ingress; 215 }; 216 217 /* TC port policer entry */ 218 struct dsa_mall_policer_tc_entry { 219 u32 burst; 220 u64 rate_bytes_per_sec; 221 }; 222 223 /* TC matchall entry */ 224 struct dsa_mall_tc_entry { 225 struct list_head list; 226 unsigned long cookie; 227 enum dsa_port_mall_action_type type; 228 union { 229 struct dsa_mall_mirror_tc_entry mirror; 230 struct dsa_mall_policer_tc_entry policer; 231 }; 232 }; 233 234 struct dsa_bridge { 235 struct net_device *dev; 236 unsigned int num; 237 bool tx_fwd_offload; 238 refcount_t refcount; 239 }; 240 241 struct dsa_port { 242 /* A CPU port is physically connected to a conduit device. A user port 243 * exposes a network device to user-space, called 'user' here. 244 */ 245 union { 246 struct net_device *conduit; 247 struct net_device *user; 248 }; 249 250 /* Copy of the tagging protocol operations, for quicker access 251 * in the data path. Valid only for the CPU ports. 252 */ 253 const struct dsa_device_ops *tag_ops; 254 255 /* Copies for faster access in conduit receive hot path */ 256 struct dsa_switch_tree *dst; 257 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 258 259 struct dsa_switch *ds; 260 261 unsigned int index; 262 263 enum { 264 DSA_PORT_TYPE_UNUSED = 0, 265 DSA_PORT_TYPE_CPU, 266 DSA_PORT_TYPE_DSA, 267 DSA_PORT_TYPE_USER, 268 } type; 269 270 const char *name; 271 struct dsa_port *cpu_dp; 272 u8 mac[ETH_ALEN]; 273 274 u8 stp_state; 275 276 /* Warning: the following bit fields are not atomic, and updating them 277 * can only be done from code paths where concurrency is not possible 278 * (probe time or under rtnl_lock). 279 */ 280 u8 vlan_filtering:1; 281 282 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 283 u8 learning:1; 284 285 u8 lag_tx_enabled:1; 286 287 /* conduit state bits, valid only on CPU ports */ 288 u8 conduit_admin_up:1; 289 u8 conduit_oper_up:1; 290 291 /* Valid only on user ports */ 292 u8 cpu_port_in_lag:1; 293 294 u8 setup:1; 295 296 struct device_node *dn; 297 unsigned int ageing_time; 298 299 struct dsa_bridge *bridge; 300 struct devlink_port devlink_port; 301 struct phylink *pl; 302 struct phylink_config pl_config; 303 struct dsa_lag *lag; 304 struct net_device *hsr_dev; 305 306 struct list_head list; 307 308 /* 309 * Original copy of the conduit netdev ethtool_ops 310 */ 311 const struct ethtool_ops *orig_ethtool_ops; 312 313 /* List of MAC addresses that must be forwarded on this port. 314 * These are only valid on CPU ports and DSA links. 315 */ 316 struct mutex addr_lists_lock; 317 struct list_head fdbs; 318 struct list_head mdbs; 319 320 struct mutex vlans_lock; 321 union { 322 /* List of VLANs that CPU and DSA ports are members of. 323 * Access to this is serialized by the sleepable @vlans_lock. 324 */ 325 struct list_head vlans; 326 /* List of VLANs that user ports are members of. 327 * Access to this is serialized by netif_addr_lock_bh(). 328 */ 329 struct list_head user_vlans; 330 }; 331 }; 332 333 static inline struct dsa_port * 334 dsa_phylink_to_port(struct phylink_config *config) 335 { 336 return container_of(config, struct dsa_port, pl_config); 337 } 338 339 /* TODO: ideally DSA ports would have a single dp->link_dp member, 340 * and no dst->rtable nor this struct dsa_link would be needed, 341 * but this would require some more complex tree walking, 342 * so keep it stupid at the moment and list them all. 343 */ 344 struct dsa_link { 345 struct dsa_port *dp; 346 struct dsa_port *link_dp; 347 struct list_head list; 348 }; 349 350 enum dsa_db_type { 351 DSA_DB_PORT, 352 DSA_DB_LAG, 353 DSA_DB_BRIDGE, 354 }; 355 356 struct dsa_db { 357 enum dsa_db_type type; 358 359 union { 360 const struct dsa_port *dp; 361 struct dsa_lag lag; 362 struct dsa_bridge bridge; 363 }; 364 }; 365 366 struct dsa_mac_addr { 367 unsigned char addr[ETH_ALEN]; 368 u16 vid; 369 refcount_t refcount; 370 struct list_head list; 371 struct dsa_db db; 372 }; 373 374 struct dsa_vlan { 375 u16 vid; 376 refcount_t refcount; 377 struct list_head list; 378 }; 379 380 struct dsa_switch { 381 struct device *dev; 382 383 /* 384 * Parent switch tree, and switch index. 385 */ 386 struct dsa_switch_tree *dst; 387 unsigned int index; 388 389 /* Warning: the following bit fields are not atomic, and updating them 390 * can only be done from code paths where concurrency is not possible 391 * (probe time or under rtnl_lock). 392 */ 393 u32 setup:1; 394 395 /* Disallow bridge core from requesting different VLAN awareness 396 * settings on ports if not hardware-supported 397 */ 398 u32 vlan_filtering_is_global:1; 399 400 /* Keep VLAN filtering enabled on ports not offloading any upper */ 401 u32 needs_standalone_vlan_filtering:1; 402 403 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 404 * that have vlan_filtering=0. All drivers should ideally set this (and 405 * then the option would get removed), but it is unknown whether this 406 * would break things or not. 407 */ 408 u32 configure_vlan_while_not_filtering:1; 409 410 /* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames. 411 * DEPRECATED: Do NOT set this field in new drivers. Instead look at 412 * the dsa_software_vlan_untag() comments. 413 */ 414 u32 untag_bridge_pvid:1; 415 /* Pop the default_pvid of VLAN-aware bridge ports from tagged frames. 416 * Useful if the switch cannot preserve the VLAN tag as seen on the 417 * wire for user port ingress, and chooses to send all frames as 418 * VLAN-tagged to the CPU, including those which were originally 419 * untagged. 420 */ 421 u32 untag_vlan_aware_bridge_pvid:1; 422 423 /* Let DSA manage the FDB entries towards the 424 * CPU, based on the software bridge database. 425 */ 426 u32 assisted_learning_on_cpu_port:1; 427 428 /* In case vlan_filtering_is_global is set, the VLAN awareness state 429 * should be retrieved from here and not from the per-port settings. 430 */ 431 u32 vlan_filtering:1; 432 433 /* For switches that only have the MRU configurable. To ensure the 434 * configured MTU is not exceeded, normalization of MRU on all bridged 435 * interfaces is needed. 436 */ 437 u32 mtu_enforcement_ingress:1; 438 439 /* Drivers that isolate the FDBs of multiple bridges must set this 440 * to true to receive the bridge as an argument in .port_fdb_{add,del} 441 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 442 * passed as zero. 443 */ 444 u32 fdb_isolation:1; 445 446 /* Drivers that have global DSCP mapping settings must set this to 447 * true to automatically apply the settings to all ports. 448 */ 449 u32 dscp_prio_mapping_is_global:1; 450 451 /* Listener for switch fabric events */ 452 struct notifier_block nb; 453 454 /* 455 * Give the switch driver somewhere to hang its private data 456 * structure. 457 */ 458 void *priv; 459 460 void *tagger_data; 461 462 /* 463 * Configuration data for this switch. 464 */ 465 struct dsa_chip_data *cd; 466 467 /* 468 * The switch operations. 469 */ 470 const struct dsa_switch_ops *ops; 471 472 /* 473 * Allow a DSA switch driver to override the phylink MAC ops 474 */ 475 const struct phylink_mac_ops *phylink_mac_ops; 476 477 /* 478 * User mii_bus and devices for the individual ports. 479 */ 480 u32 phys_mii_mask; 481 struct mii_bus *user_mii_bus; 482 483 /* Ageing Time limits in msecs */ 484 unsigned int ageing_time_min; 485 unsigned int ageing_time_max; 486 487 /* Storage for drivers using tag_8021q */ 488 struct dsa_8021q_context *tag_8021q_ctx; 489 490 /* devlink used to represent this switch device */ 491 struct devlink *devlink; 492 493 /* Number of switch port queues */ 494 unsigned int num_tx_queues; 495 496 /* Drivers that benefit from having an ID associated with each 497 * offloaded LAG should set this to the maximum number of 498 * supported IDs. DSA will then maintain a mapping of _at 499 * least_ these many IDs, accessible to drivers via 500 * dsa_lag_id(). 501 */ 502 unsigned int num_lag_ids; 503 504 /* Drivers that support bridge forwarding offload or FDB isolation 505 * should set this to the maximum number of bridges spanning the same 506 * switch tree (or all trees, in the case of cross-tree bridging 507 * support) that can be offloaded. 508 */ 509 unsigned int max_num_bridges; 510 511 unsigned int num_ports; 512 }; 513 514 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 515 { 516 struct dsa_switch_tree *dst = ds->dst; 517 struct dsa_port *dp; 518 519 list_for_each_entry(dp, &dst->ports, list) 520 if (dp->ds == ds && dp->index == p) 521 return dp; 522 523 return NULL; 524 } 525 526 static inline bool dsa_port_is_dsa(struct dsa_port *port) 527 { 528 return port->type == DSA_PORT_TYPE_DSA; 529 } 530 531 static inline bool dsa_port_is_cpu(struct dsa_port *port) 532 { 533 return port->type == DSA_PORT_TYPE_CPU; 534 } 535 536 static inline bool dsa_port_is_user(struct dsa_port *dp) 537 { 538 return dp->type == DSA_PORT_TYPE_USER; 539 } 540 541 static inline bool dsa_port_is_unused(struct dsa_port *dp) 542 { 543 return dp->type == DSA_PORT_TYPE_UNUSED; 544 } 545 546 static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 547 { 548 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 549 dp->conduit_oper_up; 550 } 551 552 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 553 { 554 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 555 } 556 557 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 558 { 559 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 560 } 561 562 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 563 { 564 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 565 } 566 567 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 568 { 569 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 570 } 571 572 #define dsa_tree_for_each_user_port(_dp, _dst) \ 573 list_for_each_entry((_dp), &(_dst)->ports, list) \ 574 if (dsa_port_is_user((_dp))) 575 576 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 577 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 578 if (dsa_port_is_user((_dp))) 579 580 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 581 list_for_each_entry((_dp), &(_dst)->ports, list) \ 582 if (dsa_port_is_cpu((_dp))) 583 584 #define dsa_switch_for_each_port(_dp, _ds) \ 585 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 586 if ((_dp)->ds == (_ds)) 587 588 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 589 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 590 if ((_dp)->ds == (_ds)) 591 592 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 593 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 594 if ((_dp)->ds == (_ds)) 595 596 #define dsa_switch_for_each_available_port(_dp, _ds) \ 597 dsa_switch_for_each_port((_dp), (_ds)) \ 598 if (!dsa_port_is_unused((_dp))) 599 600 #define dsa_switch_for_each_user_port(_dp, _ds) \ 601 dsa_switch_for_each_port((_dp), (_ds)) \ 602 if (dsa_port_is_user((_dp))) 603 604 #define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \ 605 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 606 if (dsa_port_is_user((_dp))) 607 608 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 609 dsa_switch_for_each_port((_dp), (_ds)) \ 610 if (dsa_port_is_cpu((_dp))) 611 612 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 613 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 614 if (dsa_port_is_cpu((_dp))) 615 616 static inline u32 dsa_user_ports(struct dsa_switch *ds) 617 { 618 struct dsa_port *dp; 619 u32 mask = 0; 620 621 dsa_switch_for_each_user_port(dp, ds) 622 mask |= BIT(dp->index); 623 624 return mask; 625 } 626 627 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 628 { 629 struct dsa_port *cpu_dp; 630 u32 mask = 0; 631 632 dsa_switch_for_each_cpu_port(cpu_dp, ds) 633 mask |= BIT(cpu_dp->index); 634 635 return mask; 636 } 637 638 /* Return the local port used to reach an arbitrary switch device */ 639 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 640 { 641 struct dsa_switch_tree *dst = ds->dst; 642 struct dsa_link *dl; 643 644 list_for_each_entry(dl, &dst->rtable, list) 645 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 646 return dl->dp->index; 647 648 return ds->num_ports; 649 } 650 651 /* Return the local port used to reach an arbitrary switch port */ 652 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 653 int port) 654 { 655 if (device == ds->index) 656 return port; 657 else 658 return dsa_routing_port(ds, device); 659 } 660 661 /* Return the local port used to reach the dedicated CPU port */ 662 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 663 { 664 const struct dsa_port *dp = dsa_to_port(ds, port); 665 const struct dsa_port *cpu_dp = dp->cpu_dp; 666 667 if (!cpu_dp) 668 return port; 669 670 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 671 } 672 673 /* Return true if this is the local port used to reach the CPU port */ 674 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 675 { 676 if (dsa_is_unused_port(ds, port)) 677 return false; 678 679 return port == dsa_upstream_port(ds, port); 680 } 681 682 /* Return true if this is a DSA port leading away from the CPU */ 683 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 684 { 685 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 686 } 687 688 /* Return the local port used to reach the CPU port */ 689 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 690 { 691 struct dsa_port *dp; 692 693 dsa_switch_for_each_available_port(dp, ds) { 694 return dsa_upstream_port(ds, dp->index); 695 } 696 697 return ds->num_ports; 698 } 699 700 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 701 * that the routing port from @downstream_ds to @upstream_ds is also the port 702 * which @downstream_ds uses to reach its dedicated CPU. 703 */ 704 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 705 struct dsa_switch *downstream_ds) 706 { 707 int routing_port; 708 709 if (upstream_ds == downstream_ds) 710 return true; 711 712 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 713 714 return dsa_is_upstream_port(downstream_ds, routing_port); 715 } 716 717 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 718 { 719 const struct dsa_switch *ds = dp->ds; 720 721 if (ds->vlan_filtering_is_global) 722 return ds->vlan_filtering; 723 else 724 return dp->vlan_filtering; 725 } 726 727 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 728 { 729 return dp->lag ? dp->lag->id : 0; 730 } 731 732 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 733 { 734 return dp->lag ? dp->lag->dev : NULL; 735 } 736 737 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 738 const struct dsa_lag *lag) 739 { 740 return dsa_port_lag_dev_get(dp) == lag->dev; 741 } 742 743 static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 744 { 745 if (dp->cpu_port_in_lag) 746 return dsa_port_lag_dev_get(dp->cpu_dp); 747 748 return dp->cpu_dp->conduit; 749 } 750 751 static inline 752 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 753 { 754 if (!dp->bridge) 755 return NULL; 756 757 if (dp->lag) 758 return dp->lag->dev; 759 else if (dp->hsr_dev) 760 return dp->hsr_dev; 761 762 return dp->user; 763 } 764 765 static inline struct net_device * 766 dsa_port_bridge_dev_get(const struct dsa_port *dp) 767 { 768 return dp->bridge ? dp->bridge->dev : NULL; 769 } 770 771 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 772 { 773 return dp->bridge ? dp->bridge->num : 0; 774 } 775 776 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 777 const struct dsa_port *b) 778 { 779 struct net_device *br_a = dsa_port_bridge_dev_get(a); 780 struct net_device *br_b = dsa_port_bridge_dev_get(b); 781 782 /* Standalone ports are not in the same bridge with one another */ 783 return (!br_a || !br_b) ? false : (br_a == br_b); 784 } 785 786 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 787 const struct net_device *dev) 788 { 789 return dsa_port_to_bridge_port(dp) == dev; 790 } 791 792 static inline bool 793 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 794 const struct net_device *bridge_dev) 795 { 796 /* DSA ports connected to a bridge, and event was emitted 797 * for the bridge. 798 */ 799 return dsa_port_bridge_dev_get(dp) == bridge_dev; 800 } 801 802 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 803 const struct dsa_bridge *bridge) 804 { 805 return dsa_port_bridge_dev_get(dp) == bridge->dev; 806 } 807 808 /* Returns true if any port of this tree offloads the given net_device */ 809 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 810 const struct net_device *dev) 811 { 812 struct dsa_port *dp; 813 814 list_for_each_entry(dp, &dst->ports, list) 815 if (dsa_port_offloads_bridge_port(dp, dev)) 816 return true; 817 818 return false; 819 } 820 821 /* Returns true if any port of this tree offloads the given bridge */ 822 static inline bool 823 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 824 const struct net_device *bridge_dev) 825 { 826 struct dsa_port *dp; 827 828 list_for_each_entry(dp, &dst->ports, list) 829 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 830 return true; 831 832 return false; 833 } 834 835 static inline bool dsa_port_tree_same(const struct dsa_port *a, 836 const struct dsa_port *b) 837 { 838 return a->ds->dst == b->ds->dst; 839 } 840 841 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 842 bool is_static, void *data); 843 struct dsa_switch_ops { 844 /* 845 * Tagging protocol helpers called for the CPU ports and DSA links. 846 * @get_tag_protocol retrieves the initial tagging protocol and is 847 * mandatory. Switches which can operate using multiple tagging 848 * protocols should implement @change_tag_protocol and report in 849 * @get_tag_protocol the tagger in current use. 850 */ 851 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 852 int port, 853 enum dsa_tag_protocol mprot); 854 int (*change_tag_protocol)(struct dsa_switch *ds, 855 enum dsa_tag_protocol proto); 856 /* 857 * Method for switch drivers to connect to the tagging protocol driver 858 * in current use. The switch driver can provide handlers for certain 859 * types of packets for switch management. 860 */ 861 int (*connect_tag_protocol)(struct dsa_switch *ds, 862 enum dsa_tag_protocol proto); 863 864 int (*port_change_conduit)(struct dsa_switch *ds, int port, 865 struct net_device *conduit, 866 struct netlink_ext_ack *extack); 867 868 /* Optional switch-wide initialization and destruction methods */ 869 int (*setup)(struct dsa_switch *ds); 870 void (*teardown)(struct dsa_switch *ds); 871 872 /* Per-port initialization and destruction methods. Mandatory if the 873 * driver registers devlink port regions, optional otherwise. 874 */ 875 int (*port_setup)(struct dsa_switch *ds, int port); 876 void (*port_teardown)(struct dsa_switch *ds, int port); 877 878 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 879 880 /* 881 * Access to the switch's PHY registers. 882 */ 883 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 884 int (*phy_write)(struct dsa_switch *ds, int port, 885 int regnum, u16 val); 886 887 /* 888 * PHYLINK integration 889 */ 890 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 891 struct phylink_config *config); 892 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 893 struct phylink_link_state *state); 894 /* 895 * Port statistics counters. 896 */ 897 void (*get_strings)(struct dsa_switch *ds, int port, 898 u32 stringset, uint8_t *data); 899 void (*get_ethtool_stats)(struct dsa_switch *ds, 900 int port, uint64_t *data); 901 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 902 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 903 int port, uint64_t *data); 904 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 905 struct ethtool_eth_phy_stats *phy_stats); 906 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 907 struct ethtool_eth_mac_stats *mac_stats); 908 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 909 struct ethtool_eth_ctrl_stats *ctrl_stats); 910 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 911 struct ethtool_rmon_stats *rmon_stats, 912 const struct ethtool_rmon_hist_range **ranges); 913 void (*get_ts_stats)(struct dsa_switch *ds, int port, 914 struct ethtool_ts_stats *ts_stats); 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 kernel_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 int (*port_set_apptrust)(struct dsa_switch *ds, int port, 959 const u8 *sel, int nsel); 960 int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel, 961 int *nsel); 962 963 /* 964 * Suspend and resume 965 */ 966 int (*suspend)(struct dsa_switch *ds); 967 int (*resume)(struct dsa_switch *ds); 968 969 /* 970 * Port enable/disable 971 */ 972 int (*port_enable)(struct dsa_switch *ds, int port, 973 struct phy_device *phy); 974 void (*port_disable)(struct dsa_switch *ds, int port); 975 976 977 /* 978 * Notification for MAC address changes on user ports. Drivers can 979 * currently only veto operations. They should not use the method to 980 * program the hardware, since the operation is not rolled back in case 981 * of other errors. 982 */ 983 int (*port_set_mac_address)(struct dsa_switch *ds, int port, 984 const unsigned char *addr); 985 986 /* 987 * Compatibility between device trees defining multiple CPU ports and 988 * drivers which are not OK to use by default the numerically smallest 989 * CPU port of a switch for its local ports. This can return NULL, 990 * meaning "don't know/don't care". 991 */ 992 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds); 993 994 /* 995 * Port's MAC EEE settings 996 */ 997 bool (*support_eee)(struct dsa_switch *ds, int port); 998 int (*set_mac_eee)(struct dsa_switch *ds, int port, 999 struct ethtool_keee *e); 1000 1001 /* EEPROM access */ 1002 int (*get_eeprom_len)(struct dsa_switch *ds); 1003 int (*get_eeprom)(struct dsa_switch *ds, 1004 struct ethtool_eeprom *eeprom, u8 *data); 1005 int (*set_eeprom)(struct dsa_switch *ds, 1006 struct ethtool_eeprom *eeprom, u8 *data); 1007 1008 /* 1009 * Register access. 1010 */ 1011 int (*get_regs_len)(struct dsa_switch *ds, int port); 1012 void (*get_regs)(struct dsa_switch *ds, int port, 1013 struct ethtool_regs *regs, void *p); 1014 1015 /* 1016 * Upper device tracking. 1017 */ 1018 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 1019 struct netdev_notifier_changeupper_info *info); 1020 1021 /* 1022 * Bridge integration 1023 */ 1024 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 1025 int (*port_bridge_join)(struct dsa_switch *ds, int port, 1026 struct dsa_bridge bridge, 1027 bool *tx_fwd_offload, 1028 struct netlink_ext_ack *extack); 1029 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1030 struct dsa_bridge bridge); 1031 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1032 u8 state); 1033 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1034 const struct switchdev_mst_state *state); 1035 void (*port_fast_age)(struct dsa_switch *ds, int port); 1036 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1037 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1038 struct switchdev_brport_flags flags, 1039 struct netlink_ext_ack *extack); 1040 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1041 struct switchdev_brport_flags flags, 1042 struct netlink_ext_ack *extack); 1043 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1044 bool uc, bool mc); 1045 1046 /* 1047 * VLAN support 1048 */ 1049 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1050 bool vlan_filtering, 1051 struct netlink_ext_ack *extack); 1052 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1053 const struct switchdev_obj_port_vlan *vlan, 1054 struct netlink_ext_ack *extack); 1055 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1056 const struct switchdev_obj_port_vlan *vlan); 1057 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1058 const struct switchdev_vlan_msti *msti); 1059 1060 /* 1061 * Forwarding database 1062 */ 1063 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1064 const unsigned char *addr, u16 vid, 1065 struct dsa_db db); 1066 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1067 const unsigned char *addr, u16 vid, 1068 struct dsa_db db); 1069 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1070 dsa_fdb_dump_cb_t *cb, void *data); 1071 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1072 const unsigned char *addr, u16 vid, 1073 struct dsa_db db); 1074 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1075 const unsigned char *addr, u16 vid, 1076 struct dsa_db db); 1077 1078 /* 1079 * Multicast database 1080 */ 1081 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1082 const struct switchdev_obj_port_mdb *mdb, 1083 struct dsa_db db); 1084 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1085 const struct switchdev_obj_port_mdb *mdb, 1086 struct dsa_db db); 1087 /* 1088 * RXNFC 1089 */ 1090 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1091 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1092 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1093 struct ethtool_rxnfc *nfc); 1094 1095 /* 1096 * TC integration 1097 */ 1098 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1099 struct flow_cls_offload *cls, bool ingress); 1100 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1101 struct flow_cls_offload *cls, bool ingress); 1102 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1103 struct flow_cls_offload *cls, bool ingress); 1104 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1105 struct dsa_mall_mirror_tc_entry *mirror, 1106 bool ingress, struct netlink_ext_ack *extack); 1107 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1108 struct dsa_mall_mirror_tc_entry *mirror); 1109 int (*port_policer_add)(struct dsa_switch *ds, int port, 1110 struct dsa_mall_policer_tc_entry *policer); 1111 void (*port_policer_del)(struct dsa_switch *ds, int port); 1112 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1113 enum tc_setup_type type, void *type_data); 1114 1115 /* 1116 * Cross-chip operations 1117 */ 1118 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1119 int sw_index, int port, 1120 struct dsa_bridge bridge, 1121 struct netlink_ext_ack *extack); 1122 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1123 int sw_index, int port, 1124 struct dsa_bridge bridge); 1125 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1126 int port); 1127 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1128 int port, struct dsa_lag lag, 1129 struct netdev_lag_upper_info *info, 1130 struct netlink_ext_ack *extack); 1131 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1132 int port, struct dsa_lag lag); 1133 1134 /* 1135 * PTP functionality 1136 */ 1137 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1138 struct kernel_hwtstamp_config *config); 1139 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1140 struct kernel_hwtstamp_config *config, 1141 struct netlink_ext_ack *extack); 1142 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1143 struct sk_buff *skb); 1144 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1145 struct sk_buff *skb, unsigned int type); 1146 1147 /* Devlink parameters, etc */ 1148 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1149 struct devlink_param_gset_ctx *ctx); 1150 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1151 struct devlink_param_gset_ctx *ctx); 1152 int (*devlink_info_get)(struct dsa_switch *ds, 1153 struct devlink_info_req *req, 1154 struct netlink_ext_ack *extack); 1155 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1156 unsigned int sb_index, u16 pool_index, 1157 struct devlink_sb_pool_info *pool_info); 1158 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1159 u16 pool_index, u32 size, 1160 enum devlink_sb_threshold_type threshold_type, 1161 struct netlink_ext_ack *extack); 1162 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1163 unsigned int sb_index, u16 pool_index, 1164 u32 *p_threshold); 1165 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1166 unsigned int sb_index, u16 pool_index, 1167 u32 threshold, 1168 struct netlink_ext_ack *extack); 1169 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1170 unsigned int sb_index, u16 tc_index, 1171 enum devlink_sb_pool_type pool_type, 1172 u16 *p_pool_index, u32 *p_threshold); 1173 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1174 unsigned int sb_index, u16 tc_index, 1175 enum devlink_sb_pool_type pool_type, 1176 u16 pool_index, u32 threshold, 1177 struct netlink_ext_ack *extack); 1178 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1179 unsigned int sb_index); 1180 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1181 unsigned int sb_index); 1182 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1183 unsigned int sb_index, u16 pool_index, 1184 u32 *p_cur, u32 *p_max); 1185 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1186 unsigned int sb_index, u16 tc_index, 1187 enum devlink_sb_pool_type pool_type, 1188 u32 *p_cur, u32 *p_max); 1189 1190 /* 1191 * MTU change functionality. Switches can also adjust their MRU through 1192 * this method. By MTU, one understands the SDU (L2 payload) length. 1193 * If the switch needs to account for the DSA tag on the CPU port, this 1194 * method needs to do so privately. 1195 */ 1196 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1197 int new_mtu); 1198 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1199 1200 /* 1201 * LAG integration 1202 */ 1203 int (*port_lag_change)(struct dsa_switch *ds, int port); 1204 int (*port_lag_join)(struct dsa_switch *ds, int port, 1205 struct dsa_lag lag, 1206 struct netdev_lag_upper_info *info, 1207 struct netlink_ext_ack *extack); 1208 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1209 struct dsa_lag lag); 1210 1211 /* 1212 * HSR integration 1213 */ 1214 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1215 struct net_device *hsr, 1216 struct netlink_ext_ack *extack); 1217 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1218 struct net_device *hsr); 1219 1220 /* 1221 * MRP integration 1222 */ 1223 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1224 const struct switchdev_obj_mrp *mrp); 1225 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1226 const struct switchdev_obj_mrp *mrp); 1227 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1228 const struct switchdev_obj_ring_role_mrp *mrp); 1229 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1230 const struct switchdev_obj_ring_role_mrp *mrp); 1231 1232 /* 1233 * tag_8021q operations 1234 */ 1235 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1236 u16 flags); 1237 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1238 1239 /* 1240 * DSA conduit tracking operations 1241 */ 1242 void (*conduit_state_change)(struct dsa_switch *ds, 1243 const struct net_device *conduit, 1244 bool operational); 1245 }; 1246 1247 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1248 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1249 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1250 1251 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1252 struct devlink_param_gset_ctx *ctx); 1253 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1254 struct devlink_param_gset_ctx *ctx, 1255 struct netlink_ext_ack *extack); 1256 int dsa_devlink_params_register(struct dsa_switch *ds, 1257 const struct devlink_param *params, 1258 size_t params_count); 1259 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1260 const struct devlink_param *params, 1261 size_t params_count); 1262 int dsa_devlink_resource_register(struct dsa_switch *ds, 1263 const char *resource_name, 1264 u64 resource_size, 1265 u64 resource_id, 1266 u64 parent_resource_id, 1267 const struct devlink_resource_size_params *size_params); 1268 1269 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1270 1271 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1272 u64 resource_id, 1273 devlink_resource_occ_get_t *occ_get, 1274 void *occ_get_priv); 1275 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1276 u64 resource_id); 1277 struct devlink_region * 1278 dsa_devlink_region_create(struct dsa_switch *ds, 1279 const struct devlink_region_ops *ops, 1280 u32 region_max_snapshots, u64 region_size); 1281 struct devlink_region * 1282 dsa_devlink_port_region_create(struct dsa_switch *ds, 1283 int port, 1284 const struct devlink_port_region_ops *ops, 1285 u32 region_max_snapshots, u64 region_size); 1286 void dsa_devlink_region_destroy(struct devlink_region *region); 1287 1288 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1289 1290 struct dsa_devlink_priv { 1291 struct dsa_switch *ds; 1292 }; 1293 1294 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1295 { 1296 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1297 1298 return dl_priv->ds; 1299 } 1300 1301 static inline 1302 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1303 { 1304 struct devlink *dl = port->devlink; 1305 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1306 1307 return dl_priv->ds; 1308 } 1309 1310 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1311 { 1312 return port->index; 1313 } 1314 1315 struct dsa_switch_driver { 1316 struct list_head list; 1317 const struct dsa_switch_ops *ops; 1318 }; 1319 1320 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1321 const unsigned char *addr, u16 vid, 1322 struct dsa_db db); 1323 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1324 const struct switchdev_obj_port_mdb *mdb, 1325 struct dsa_db db); 1326 1327 /* Keep inline for faster access in hot path */ 1328 static inline bool netdev_uses_dsa(const struct net_device *dev) 1329 { 1330 #if IS_ENABLED(CONFIG_NET_DSA) 1331 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1332 #endif 1333 return false; 1334 } 1335 1336 /* All DSA tags that push the EtherType to the right (basically all except tail 1337 * tags, which don't break dissection) can be treated the same from the 1338 * perspective of the flow dissector. 1339 * 1340 * We need to return: 1341 * - offset: the (B - A) difference between: 1342 * A. the position of the real EtherType and 1343 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1344 * after the normal EtherType was supposed to be) 1345 * The offset in bytes is exactly equal to the tagger overhead (and half of 1346 * that, in __be16 shorts). 1347 * 1348 * - proto: the value of the real EtherType. 1349 */ 1350 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1351 __be16 *proto, int *offset) 1352 { 1353 #if IS_ENABLED(CONFIG_NET_DSA) 1354 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1355 int tag_len = ops->needed_headroom; 1356 1357 *offset = tag_len; 1358 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1359 #endif 1360 } 1361 1362 void dsa_unregister_switch(struct dsa_switch *ds); 1363 int dsa_register_switch(struct dsa_switch *ds); 1364 void dsa_switch_shutdown(struct dsa_switch *ds); 1365 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1366 void dsa_flush_workqueue(void); 1367 #ifdef CONFIG_PM_SLEEP 1368 int dsa_switch_suspend(struct dsa_switch *ds); 1369 int dsa_switch_resume(struct dsa_switch *ds); 1370 #else 1371 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1372 { 1373 return 0; 1374 } 1375 static inline int dsa_switch_resume(struct dsa_switch *ds) 1376 { 1377 return 0; 1378 } 1379 #endif /* CONFIG_PM_SLEEP */ 1380 1381 #if IS_ENABLED(CONFIG_NET_DSA) 1382 bool dsa_user_dev_check(const struct net_device *dev); 1383 #else 1384 static inline bool dsa_user_dev_check(const struct net_device *dev) 1385 { 1386 return false; 1387 } 1388 #endif 1389 1390 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1391 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1392 bool dsa_supports_eee(struct dsa_switch *ds, int port); 1393 1394 #endif 1395