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 #define DSA_TAG_PROTO_MXL_GSW1XX_VALUE 31 60 61 enum dsa_tag_protocol { 62 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 63 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 64 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 65 DSA_TAG_PROTO_BRCM_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE, 66 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 67 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 68 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 69 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 70 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 71 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 72 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 73 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 74 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 75 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 76 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 77 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 78 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 79 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 80 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 81 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 82 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 83 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 84 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 85 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 86 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 87 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 88 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 89 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 90 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 91 DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE, 92 DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE, 93 DSA_TAG_PROTO_MXL_GSW1XX = DSA_TAG_PROTO_MXL_GSW1XX_VALUE, 94 }; 95 96 struct dsa_switch; 97 98 struct dsa_device_ops { 99 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 100 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 101 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 102 int *offset); 103 int (*connect)(struct dsa_switch *ds); 104 void (*disconnect)(struct dsa_switch *ds); 105 unsigned int needed_headroom; 106 unsigned int needed_tailroom; 107 const char *name; 108 enum dsa_tag_protocol proto; 109 /* Some tagging protocols either mangle or shift the destination MAC 110 * address, in which case the DSA conduit would drop packets on ingress 111 * if what it understands out of the destination MAC address is not in 112 * its RX filter. 113 */ 114 bool promisc_on_conduit; 115 }; 116 117 struct dsa_lag { 118 struct net_device *dev; 119 unsigned int id; 120 struct mutex fdb_lock; 121 struct list_head fdbs; 122 refcount_t refcount; 123 }; 124 125 struct dsa_switch_tree { 126 struct list_head list; 127 128 /* List of switch ports */ 129 struct list_head ports; 130 131 /* Notifier chain for switch-wide events */ 132 struct raw_notifier_head nh; 133 134 /* Tree identifier */ 135 unsigned int index; 136 137 /* Number of switches attached to this tree */ 138 struct kref refcount; 139 140 /* Maps offloaded LAG netdevs to a zero-based linear ID for 141 * drivers that need it. 142 */ 143 struct dsa_lag **lags; 144 145 /* Tagging protocol operations */ 146 const struct dsa_device_ops *tag_ops; 147 148 /* Default tagging protocol preferred by the switches in this 149 * tree. 150 */ 151 enum dsa_tag_protocol default_proto; 152 153 /* Has this tree been applied to the hardware? */ 154 bool setup; 155 156 /* 157 * Configuration data for the platform device that owns 158 * this dsa switch tree instance. 159 */ 160 struct dsa_platform_data *pd; 161 162 /* List of DSA links composing the routing table */ 163 struct list_head rtable; 164 165 /* Length of "lags" array */ 166 unsigned int lags_len; 167 168 /* Track the largest switch index within a tree */ 169 unsigned int last_switch; 170 }; 171 172 /* LAG IDs are one-based, the dst->lags array is zero-based */ 173 #define dsa_lags_foreach_id(_id, _dst) \ 174 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 175 if ((_dst)->lags[(_id) - 1]) 176 177 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 178 list_for_each_entry((_dp), &(_dst)->ports, list) \ 179 if (dsa_port_offloads_lag((_dp), (_lag))) 180 181 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 182 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 183 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 184 185 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 186 unsigned int id) 187 { 188 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 189 return dst->lags[id - 1]; 190 } 191 192 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 193 struct net_device *lag_dev) 194 { 195 unsigned int id; 196 197 dsa_lags_foreach_id(id, dst) { 198 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 199 200 if (lag->dev == lag_dev) 201 return lag->id; 202 } 203 204 return -ENODEV; 205 } 206 207 /* TC matchall action types */ 208 enum dsa_port_mall_action_type { 209 DSA_PORT_MALL_MIRROR, 210 DSA_PORT_MALL_POLICER, 211 }; 212 213 /* TC mirroring entry */ 214 struct dsa_mall_mirror_tc_entry { 215 u8 to_local_port; 216 bool ingress; 217 }; 218 219 /* TC port policer entry */ 220 struct dsa_mall_policer_tc_entry { 221 u32 burst; 222 u64 rate_bytes_per_sec; 223 }; 224 225 /* TC matchall entry */ 226 struct dsa_mall_tc_entry { 227 struct list_head list; 228 unsigned long cookie; 229 enum dsa_port_mall_action_type type; 230 union { 231 struct dsa_mall_mirror_tc_entry mirror; 232 struct dsa_mall_policer_tc_entry policer; 233 }; 234 }; 235 236 struct dsa_bridge { 237 struct net_device *dev; 238 unsigned int num; 239 bool tx_fwd_offload; 240 refcount_t refcount; 241 }; 242 243 struct dsa_port { 244 /* A CPU port is physically connected to a conduit device. A user port 245 * exposes a network device to user-space, called 'user' here. 246 */ 247 union { 248 struct net_device *conduit; 249 struct net_device *user; 250 }; 251 252 /* Copy of the tagging protocol operations, for quicker access 253 * in the data path. Valid only for the CPU ports. 254 */ 255 const struct dsa_device_ops *tag_ops; 256 257 /* Copies for faster access in conduit receive hot path */ 258 struct dsa_switch_tree *dst; 259 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 260 261 struct dsa_switch *ds; 262 263 unsigned int index; 264 265 enum { 266 DSA_PORT_TYPE_UNUSED = 0, 267 DSA_PORT_TYPE_CPU, 268 DSA_PORT_TYPE_DSA, 269 DSA_PORT_TYPE_USER, 270 } type; 271 272 const char *name; 273 struct dsa_port *cpu_dp; 274 u8 mac[ETH_ALEN]; 275 276 u8 stp_state; 277 278 /* Warning: the following bit fields are not atomic, and updating them 279 * can only be done from code paths where concurrency is not possible 280 * (probe time or under rtnl_lock). 281 */ 282 u8 vlan_filtering:1; 283 284 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 285 u8 learning:1; 286 287 u8 lag_tx_enabled:1; 288 289 /* conduit state bits, valid only on CPU ports */ 290 u8 conduit_admin_up:1; 291 u8 conduit_oper_up:1; 292 293 /* Valid only on user ports */ 294 u8 cpu_port_in_lag:1; 295 296 u8 setup:1; 297 298 struct device_node *dn; 299 unsigned int ageing_time; 300 301 struct dsa_bridge *bridge; 302 struct devlink_port devlink_port; 303 struct phylink *pl; 304 struct phylink_config pl_config; 305 struct dsa_lag *lag; 306 struct net_device *hsr_dev; 307 308 struct list_head list; 309 310 /* 311 * Original copy of the conduit netdev ethtool_ops 312 */ 313 const struct ethtool_ops *orig_ethtool_ops; 314 315 /* List of MAC addresses that must be forwarded on this port. 316 * These are only valid on CPU ports and DSA links. 317 */ 318 struct mutex addr_lists_lock; 319 struct list_head fdbs; 320 struct list_head mdbs; 321 322 struct mutex vlans_lock; 323 union { 324 /* List of VLANs that CPU and DSA ports are members of. 325 * Access to this is serialized by the sleepable @vlans_lock. 326 */ 327 struct list_head vlans; 328 /* List of VLANs that user ports are members of. 329 * Access to this is serialized by netif_addr_lock_bh(). 330 */ 331 struct list_head user_vlans; 332 }; 333 }; 334 335 static inline struct dsa_port * 336 dsa_phylink_to_port(struct phylink_config *config) 337 { 338 return container_of(config, struct dsa_port, pl_config); 339 } 340 341 /* TODO: ideally DSA ports would have a single dp->link_dp member, 342 * and no dst->rtable nor this struct dsa_link would be needed, 343 * but this would require some more complex tree walking, 344 * so keep it stupid at the moment and list them all. 345 */ 346 struct dsa_link { 347 struct dsa_port *dp; 348 struct dsa_port *link_dp; 349 struct list_head list; 350 }; 351 352 enum dsa_db_type { 353 DSA_DB_PORT, 354 DSA_DB_LAG, 355 DSA_DB_BRIDGE, 356 }; 357 358 struct dsa_db { 359 enum dsa_db_type type; 360 361 union { 362 const struct dsa_port *dp; 363 struct dsa_lag lag; 364 struct dsa_bridge bridge; 365 }; 366 }; 367 368 struct dsa_mac_addr { 369 unsigned char addr[ETH_ALEN]; 370 u16 vid; 371 refcount_t refcount; 372 struct list_head list; 373 struct dsa_db db; 374 }; 375 376 struct dsa_vlan { 377 u16 vid; 378 refcount_t refcount; 379 struct list_head list; 380 }; 381 382 struct dsa_switch { 383 struct device *dev; 384 385 /* 386 * Parent switch tree, and switch index. 387 */ 388 struct dsa_switch_tree *dst; 389 unsigned int index; 390 391 /* Warning: the following bit fields are not atomic, and updating them 392 * can only be done from code paths where concurrency is not possible 393 * (probe time or under rtnl_lock). 394 */ 395 u32 setup:1; 396 397 /* Disallow bridge core from requesting different VLAN awareness 398 * settings on ports if not hardware-supported 399 */ 400 u32 vlan_filtering_is_global:1; 401 402 /* Keep VLAN filtering enabled on ports not offloading any upper */ 403 u32 needs_standalone_vlan_filtering:1; 404 405 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 406 * that have vlan_filtering=0. All drivers should ideally set this (and 407 * then the option would get removed), but it is unknown whether this 408 * would break things or not. 409 */ 410 u32 configure_vlan_while_not_filtering:1; 411 412 /* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames. 413 * DEPRECATED: Do NOT set this field in new drivers. Instead look at 414 * the dsa_software_vlan_untag() comments. 415 */ 416 u32 untag_bridge_pvid:1; 417 /* Pop the default_pvid of VLAN-aware bridge ports from tagged frames. 418 * Useful if the switch cannot preserve the VLAN tag as seen on the 419 * wire for user port ingress, and chooses to send all frames as 420 * VLAN-tagged to the CPU, including those which were originally 421 * untagged. 422 */ 423 u32 untag_vlan_aware_bridge_pvid:1; 424 425 /* Let DSA manage the FDB entries towards the 426 * CPU, based on the software bridge database. 427 */ 428 u32 assisted_learning_on_cpu_port:1; 429 430 /* In case vlan_filtering_is_global is set, the VLAN awareness state 431 * should be retrieved from here and not from the per-port settings. 432 */ 433 u32 vlan_filtering:1; 434 435 /* For switches that only have the MRU configurable. To ensure the 436 * configured MTU is not exceeded, normalization of MRU on all bridged 437 * interfaces is needed. 438 */ 439 u32 mtu_enforcement_ingress:1; 440 441 /* Drivers that isolate the FDBs of multiple bridges must set this 442 * to true to receive the bridge as an argument in .port_fdb_{add,del} 443 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 444 * passed as zero. 445 */ 446 u32 fdb_isolation:1; 447 448 /* Drivers that have global DSCP mapping settings must set this to 449 * true to automatically apply the settings to all ports. 450 */ 451 u32 dscp_prio_mapping_is_global:1; 452 453 /* Listener for switch fabric events */ 454 struct notifier_block nb; 455 456 /* 457 * Give the switch driver somewhere to hang its private data 458 * structure. 459 */ 460 void *priv; 461 462 void *tagger_data; 463 464 /* 465 * Configuration data for this switch. 466 */ 467 struct dsa_chip_data *cd; 468 469 /* 470 * The switch operations. 471 */ 472 const struct dsa_switch_ops *ops; 473 474 /* 475 * Allow a DSA switch driver to override the phylink MAC ops 476 */ 477 const struct phylink_mac_ops *phylink_mac_ops; 478 479 /* 480 * User mii_bus and devices for the individual ports. 481 */ 482 u32 phys_mii_mask; 483 struct mii_bus *user_mii_bus; 484 485 /* Ageing Time limits in msecs */ 486 unsigned int ageing_time_min; 487 unsigned int ageing_time_max; 488 489 /* Storage for drivers using tag_8021q */ 490 struct dsa_8021q_context *tag_8021q_ctx; 491 492 /* devlink used to represent this switch device */ 493 struct devlink *devlink; 494 495 /* Number of switch port queues */ 496 unsigned int num_tx_queues; 497 498 /* Drivers that benefit from having an ID associated with each 499 * offloaded LAG should set this to the maximum number of 500 * supported IDs. DSA will then maintain a mapping of _at 501 * least_ these many IDs, accessible to drivers via 502 * dsa_lag_id(). 503 */ 504 unsigned int num_lag_ids; 505 506 /* Drivers that support bridge forwarding offload or FDB isolation 507 * should set this to the maximum number of bridges spanning the same 508 * switch tree (or all trees, in the case of cross-tree bridging 509 * support) that can be offloaded. 510 */ 511 unsigned int max_num_bridges; 512 513 unsigned int num_ports; 514 }; 515 516 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 517 { 518 struct dsa_switch_tree *dst = ds->dst; 519 struct dsa_port *dp; 520 521 list_for_each_entry(dp, &dst->ports, list) 522 if (dp->ds == ds && dp->index == p) 523 return dp; 524 525 return NULL; 526 } 527 528 static inline bool dsa_port_is_dsa(struct dsa_port *port) 529 { 530 return port->type == DSA_PORT_TYPE_DSA; 531 } 532 533 static inline bool dsa_port_is_cpu(struct dsa_port *port) 534 { 535 return port->type == DSA_PORT_TYPE_CPU; 536 } 537 538 static inline bool dsa_port_is_user(struct dsa_port *dp) 539 { 540 return dp->type == DSA_PORT_TYPE_USER; 541 } 542 543 static inline bool dsa_port_is_unused(struct dsa_port *dp) 544 { 545 return dp->type == DSA_PORT_TYPE_UNUSED; 546 } 547 548 static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 549 { 550 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 551 dp->conduit_oper_up; 552 } 553 554 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 555 { 556 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 557 } 558 559 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 560 { 561 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 562 } 563 564 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 565 { 566 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 567 } 568 569 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 570 { 571 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 572 } 573 574 #define dsa_tree_for_each_user_port(_dp, _dst) \ 575 list_for_each_entry((_dp), &(_dst)->ports, list) \ 576 if (dsa_port_is_user((_dp))) 577 578 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 579 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 580 if (dsa_port_is_user((_dp))) 581 582 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 583 list_for_each_entry((_dp), &(_dst)->ports, list) \ 584 if (dsa_port_is_cpu((_dp))) 585 586 #define dsa_switch_for_each_port(_dp, _ds) \ 587 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 588 if ((_dp)->ds == (_ds)) 589 590 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 591 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 592 if ((_dp)->ds == (_ds)) 593 594 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 595 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 596 if ((_dp)->ds == (_ds)) 597 598 #define dsa_switch_for_each_available_port(_dp, _ds) \ 599 dsa_switch_for_each_port((_dp), (_ds)) \ 600 if (!dsa_port_is_unused((_dp))) 601 602 #define dsa_switch_for_each_user_port(_dp, _ds) \ 603 dsa_switch_for_each_port((_dp), (_ds)) \ 604 if (dsa_port_is_user((_dp))) 605 606 #define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \ 607 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 608 if (dsa_port_is_user((_dp))) 609 610 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 611 dsa_switch_for_each_port((_dp), (_ds)) \ 612 if (dsa_port_is_cpu((_dp))) 613 614 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 615 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 616 if (dsa_port_is_cpu((_dp))) 617 618 static inline u32 dsa_user_ports(struct dsa_switch *ds) 619 { 620 struct dsa_port *dp; 621 u32 mask = 0; 622 623 dsa_switch_for_each_user_port(dp, ds) 624 mask |= BIT(dp->index); 625 626 return mask; 627 } 628 629 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 630 { 631 struct dsa_port *cpu_dp; 632 u32 mask = 0; 633 634 dsa_switch_for_each_cpu_port(cpu_dp, ds) 635 mask |= BIT(cpu_dp->index); 636 637 return mask; 638 } 639 640 /* Return the local port used to reach an arbitrary switch device */ 641 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 642 { 643 struct dsa_switch_tree *dst = ds->dst; 644 struct dsa_link *dl; 645 646 list_for_each_entry(dl, &dst->rtable, list) 647 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 648 return dl->dp->index; 649 650 return ds->num_ports; 651 } 652 653 /* Return the local port used to reach an arbitrary switch port */ 654 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 655 int port) 656 { 657 if (device == ds->index) 658 return port; 659 else 660 return dsa_routing_port(ds, device); 661 } 662 663 /* Return the local port used to reach the dedicated CPU port */ 664 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 665 { 666 const struct dsa_port *dp = dsa_to_port(ds, port); 667 const struct dsa_port *cpu_dp = dp->cpu_dp; 668 669 if (!cpu_dp) 670 return port; 671 672 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 673 } 674 675 /* Return true if this is the local port used to reach the CPU port */ 676 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 677 { 678 if (dsa_is_unused_port(ds, port)) 679 return false; 680 681 return port == dsa_upstream_port(ds, port); 682 } 683 684 /* Return true if this is a DSA port leading away from the CPU */ 685 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 686 { 687 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 688 } 689 690 /* Return the local port used to reach the CPU port */ 691 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 692 { 693 struct dsa_port *dp; 694 695 dsa_switch_for_each_available_port(dp, ds) { 696 return dsa_upstream_port(ds, dp->index); 697 } 698 699 return ds->num_ports; 700 } 701 702 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 703 * that the routing port from @downstream_ds to @upstream_ds is also the port 704 * which @downstream_ds uses to reach its dedicated CPU. 705 */ 706 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 707 struct dsa_switch *downstream_ds) 708 { 709 int routing_port; 710 711 if (upstream_ds == downstream_ds) 712 return true; 713 714 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 715 716 return dsa_is_upstream_port(downstream_ds, routing_port); 717 } 718 719 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 720 { 721 const struct dsa_switch *ds = dp->ds; 722 723 if (ds->vlan_filtering_is_global) 724 return ds->vlan_filtering; 725 else 726 return dp->vlan_filtering; 727 } 728 729 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 730 { 731 return dp->lag ? dp->lag->id : 0; 732 } 733 734 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 735 { 736 return dp->lag ? dp->lag->dev : NULL; 737 } 738 739 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 740 const struct dsa_lag *lag) 741 { 742 return dsa_port_lag_dev_get(dp) == lag->dev; 743 } 744 745 static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 746 { 747 if (dp->cpu_port_in_lag) 748 return dsa_port_lag_dev_get(dp->cpu_dp); 749 750 return dp->cpu_dp->conduit; 751 } 752 753 static inline 754 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 755 { 756 if (!dp->bridge) 757 return NULL; 758 759 if (dp->lag) 760 return dp->lag->dev; 761 else if (dp->hsr_dev) 762 return dp->hsr_dev; 763 764 return dp->user; 765 } 766 767 static inline struct net_device * 768 dsa_port_bridge_dev_get(const struct dsa_port *dp) 769 { 770 return dp->bridge ? dp->bridge->dev : NULL; 771 } 772 773 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 774 { 775 return dp->bridge ? dp->bridge->num : 0; 776 } 777 778 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 779 const struct dsa_port *b) 780 { 781 struct net_device *br_a = dsa_port_bridge_dev_get(a); 782 struct net_device *br_b = dsa_port_bridge_dev_get(b); 783 784 /* Standalone ports are not in the same bridge with one another */ 785 return (!br_a || !br_b) ? false : (br_a == br_b); 786 } 787 788 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 789 const struct net_device *dev) 790 { 791 return dsa_port_to_bridge_port(dp) == dev; 792 } 793 794 static inline bool 795 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 796 const struct net_device *bridge_dev) 797 { 798 /* DSA ports connected to a bridge, and event was emitted 799 * for the bridge. 800 */ 801 return dsa_port_bridge_dev_get(dp) == bridge_dev; 802 } 803 804 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 805 const struct dsa_bridge *bridge) 806 { 807 return dsa_port_bridge_dev_get(dp) == bridge->dev; 808 } 809 810 /* Returns true if any port of this tree offloads the given net_device */ 811 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 812 const struct net_device *dev) 813 { 814 struct dsa_port *dp; 815 816 list_for_each_entry(dp, &dst->ports, list) 817 if (dsa_port_offloads_bridge_port(dp, dev)) 818 return true; 819 820 return false; 821 } 822 823 /* Returns true if any port of this tree offloads the given bridge */ 824 static inline bool 825 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 826 const struct net_device *bridge_dev) 827 { 828 struct dsa_port *dp; 829 830 list_for_each_entry(dp, &dst->ports, list) 831 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 832 return true; 833 834 return false; 835 } 836 837 static inline bool dsa_port_tree_same(const struct dsa_port *a, 838 const struct dsa_port *b) 839 { 840 return a->ds->dst == b->ds->dst; 841 } 842 843 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 844 bool is_static, void *data); 845 struct dsa_switch_ops { 846 /* 847 * Tagging protocol helpers called for the CPU ports and DSA links. 848 * @get_tag_protocol retrieves the initial tagging protocol and is 849 * mandatory. Switches which can operate using multiple tagging 850 * protocols should implement @change_tag_protocol and report in 851 * @get_tag_protocol the tagger in current use. 852 */ 853 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 854 int port, 855 enum dsa_tag_protocol mprot); 856 int (*change_tag_protocol)(struct dsa_switch *ds, 857 enum dsa_tag_protocol proto); 858 /* 859 * Method for switch drivers to connect to the tagging protocol driver 860 * in current use. The switch driver can provide handlers for certain 861 * types of packets for switch management. 862 */ 863 int (*connect_tag_protocol)(struct dsa_switch *ds, 864 enum dsa_tag_protocol proto); 865 866 int (*port_change_conduit)(struct dsa_switch *ds, int port, 867 struct net_device *conduit, 868 struct netlink_ext_ack *extack); 869 870 /* Optional switch-wide initialization and destruction methods */ 871 int (*setup)(struct dsa_switch *ds); 872 void (*teardown)(struct dsa_switch *ds); 873 874 /* Per-port initialization and destruction methods. Mandatory if the 875 * driver registers devlink port regions, optional otherwise. 876 */ 877 int (*port_setup)(struct dsa_switch *ds, int port); 878 void (*port_teardown)(struct dsa_switch *ds, int port); 879 880 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 881 882 /* 883 * Access to the switch's PHY registers. 884 */ 885 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 886 int (*phy_write)(struct dsa_switch *ds, int port, 887 int regnum, u16 val); 888 889 /* 890 * PHYLINK integration 891 */ 892 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 893 struct phylink_config *config); 894 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 895 struct phylink_link_state *state); 896 /* 897 * Port statistics counters. 898 */ 899 void (*get_strings)(struct dsa_switch *ds, int port, 900 u32 stringset, uint8_t *data); 901 void (*get_ethtool_stats)(struct dsa_switch *ds, 902 int port, uint64_t *data); 903 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 904 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 905 int port, uint64_t *data); 906 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 907 struct ethtool_eth_phy_stats *phy_stats); 908 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 909 struct ethtool_eth_mac_stats *mac_stats); 910 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 911 struct ethtool_eth_ctrl_stats *ctrl_stats); 912 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 913 struct ethtool_rmon_stats *rmon_stats, 914 const struct ethtool_rmon_hist_range **ranges); 915 void (*get_ts_stats)(struct dsa_switch *ds, int port, 916 struct ethtool_ts_stats *ts_stats); 917 void (*get_stats64)(struct dsa_switch *ds, int port, 918 struct rtnl_link_stats64 *s); 919 void (*get_pause_stats)(struct dsa_switch *ds, int port, 920 struct ethtool_pause_stats *pause_stats); 921 void (*self_test)(struct dsa_switch *ds, int port, 922 struct ethtool_test *etest, u64 *data); 923 924 /* 925 * ethtool Wake-on-LAN 926 */ 927 void (*get_wol)(struct dsa_switch *ds, int port, 928 struct ethtool_wolinfo *w); 929 int (*set_wol)(struct dsa_switch *ds, int port, 930 struct ethtool_wolinfo *w); 931 932 /* 933 * ethtool timestamp info 934 */ 935 int (*get_ts_info)(struct dsa_switch *ds, int port, 936 struct kernel_ethtool_ts_info *ts); 937 938 /* 939 * ethtool MAC merge layer 940 */ 941 int (*get_mm)(struct dsa_switch *ds, int port, 942 struct ethtool_mm_state *state); 943 int (*set_mm)(struct dsa_switch *ds, int port, 944 struct ethtool_mm_cfg *cfg, 945 struct netlink_ext_ack *extack); 946 void (*get_mm_stats)(struct dsa_switch *ds, int port, 947 struct ethtool_mm_stats *stats); 948 949 /* 950 * DCB ops 951 */ 952 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 953 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 954 u8 prio); 955 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 956 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 957 u8 prio); 958 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 959 u8 prio); 960 int (*port_set_apptrust)(struct dsa_switch *ds, int port, 961 const u8 *sel, int nsel); 962 int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel, 963 int *nsel); 964 965 /* 966 * Suspend and resume 967 */ 968 int (*suspend)(struct dsa_switch *ds); 969 int (*resume)(struct dsa_switch *ds); 970 971 /* 972 * Port enable/disable 973 */ 974 int (*port_enable)(struct dsa_switch *ds, int port, 975 struct phy_device *phy); 976 void (*port_disable)(struct dsa_switch *ds, int port); 977 978 979 /* 980 * Notification for MAC address changes on user ports. Drivers can 981 * currently only veto operations. They should not use the method to 982 * program the hardware, since the operation is not rolled back in case 983 * of other errors. 984 */ 985 int (*port_set_mac_address)(struct dsa_switch *ds, int port, 986 const unsigned char *addr); 987 988 /* 989 * Compatibility between device trees defining multiple CPU ports and 990 * drivers which are not OK to use by default the numerically smallest 991 * CPU port of a switch for its local ports. This can return NULL, 992 * meaning "don't know/don't care". 993 */ 994 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds); 995 996 /* 997 * Port's MAC EEE settings 998 */ 999 bool (*support_eee)(struct dsa_switch *ds, int port); 1000 int (*set_mac_eee)(struct dsa_switch *ds, int port, 1001 struct ethtool_keee *e); 1002 1003 /* EEPROM access */ 1004 int (*get_eeprom_len)(struct dsa_switch *ds); 1005 int (*get_eeprom)(struct dsa_switch *ds, 1006 struct ethtool_eeprom *eeprom, u8 *data); 1007 int (*set_eeprom)(struct dsa_switch *ds, 1008 struct ethtool_eeprom *eeprom, u8 *data); 1009 1010 /* 1011 * Register access. 1012 */ 1013 int (*get_regs_len)(struct dsa_switch *ds, int port); 1014 void (*get_regs)(struct dsa_switch *ds, int port, 1015 struct ethtool_regs *regs, void *p); 1016 1017 /* 1018 * Upper device tracking. 1019 */ 1020 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 1021 struct netdev_notifier_changeupper_info *info); 1022 1023 /* 1024 * Bridge integration 1025 */ 1026 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 1027 int (*port_bridge_join)(struct dsa_switch *ds, int port, 1028 struct dsa_bridge bridge, 1029 bool *tx_fwd_offload, 1030 struct netlink_ext_ack *extack); 1031 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1032 struct dsa_bridge bridge); 1033 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1034 u8 state); 1035 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1036 const struct switchdev_mst_state *state); 1037 void (*port_fast_age)(struct dsa_switch *ds, int port); 1038 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1039 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1040 struct switchdev_brport_flags flags, 1041 struct netlink_ext_ack *extack); 1042 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1043 struct switchdev_brport_flags flags, 1044 struct netlink_ext_ack *extack); 1045 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1046 bool uc, bool mc); 1047 1048 /* 1049 * VLAN support 1050 */ 1051 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1052 bool vlan_filtering, 1053 struct netlink_ext_ack *extack); 1054 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1055 const struct switchdev_obj_port_vlan *vlan, 1056 struct netlink_ext_ack *extack); 1057 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1058 const struct switchdev_obj_port_vlan *vlan); 1059 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1060 const struct switchdev_vlan_msti *msti); 1061 1062 /* 1063 * Forwarding database 1064 */ 1065 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1066 const unsigned char *addr, u16 vid, 1067 struct dsa_db db); 1068 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1069 const unsigned char *addr, u16 vid, 1070 struct dsa_db db); 1071 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1072 dsa_fdb_dump_cb_t *cb, void *data); 1073 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1074 const unsigned char *addr, u16 vid, 1075 struct dsa_db db); 1076 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1077 const unsigned char *addr, u16 vid, 1078 struct dsa_db db); 1079 1080 /* 1081 * Multicast database 1082 */ 1083 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1084 const struct switchdev_obj_port_mdb *mdb, 1085 struct dsa_db db); 1086 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1087 const struct switchdev_obj_port_mdb *mdb, 1088 struct dsa_db db); 1089 /* 1090 * RXNFC 1091 */ 1092 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1093 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1094 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1095 struct ethtool_rxnfc *nfc); 1096 1097 /* 1098 * TC integration 1099 */ 1100 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1101 struct flow_cls_offload *cls, bool ingress); 1102 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1103 struct flow_cls_offload *cls, bool ingress); 1104 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1105 struct flow_cls_offload *cls, bool ingress); 1106 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1107 struct dsa_mall_mirror_tc_entry *mirror, 1108 bool ingress, struct netlink_ext_ack *extack); 1109 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1110 struct dsa_mall_mirror_tc_entry *mirror); 1111 int (*port_policer_add)(struct dsa_switch *ds, int port, 1112 struct dsa_mall_policer_tc_entry *policer); 1113 void (*port_policer_del)(struct dsa_switch *ds, int port); 1114 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1115 enum tc_setup_type type, void *type_data); 1116 1117 /* 1118 * Cross-chip operations 1119 */ 1120 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1121 int sw_index, int port, 1122 struct dsa_bridge bridge, 1123 struct netlink_ext_ack *extack); 1124 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1125 int sw_index, int port, 1126 struct dsa_bridge bridge); 1127 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1128 int port); 1129 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1130 int port, struct dsa_lag lag, 1131 struct netdev_lag_upper_info *info, 1132 struct netlink_ext_ack *extack); 1133 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1134 int port, struct dsa_lag lag); 1135 1136 /* 1137 * PTP functionality 1138 */ 1139 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1140 struct kernel_hwtstamp_config *config); 1141 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1142 struct kernel_hwtstamp_config *config, 1143 struct netlink_ext_ack *extack); 1144 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1145 struct sk_buff *skb); 1146 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1147 struct sk_buff *skb, unsigned int type); 1148 1149 /* Devlink parameters, etc */ 1150 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1151 struct devlink_param_gset_ctx *ctx); 1152 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1153 struct devlink_param_gset_ctx *ctx); 1154 int (*devlink_info_get)(struct dsa_switch *ds, 1155 struct devlink_info_req *req, 1156 struct netlink_ext_ack *extack); 1157 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1158 unsigned int sb_index, u16 pool_index, 1159 struct devlink_sb_pool_info *pool_info); 1160 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1161 u16 pool_index, u32 size, 1162 enum devlink_sb_threshold_type threshold_type, 1163 struct netlink_ext_ack *extack); 1164 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1165 unsigned int sb_index, u16 pool_index, 1166 u32 *p_threshold); 1167 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1168 unsigned int sb_index, u16 pool_index, 1169 u32 threshold, 1170 struct netlink_ext_ack *extack); 1171 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1172 unsigned int sb_index, u16 tc_index, 1173 enum devlink_sb_pool_type pool_type, 1174 u16 *p_pool_index, u32 *p_threshold); 1175 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1176 unsigned int sb_index, u16 tc_index, 1177 enum devlink_sb_pool_type pool_type, 1178 u16 pool_index, u32 threshold, 1179 struct netlink_ext_ack *extack); 1180 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1181 unsigned int sb_index); 1182 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1183 unsigned int sb_index); 1184 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1185 unsigned int sb_index, u16 pool_index, 1186 u32 *p_cur, u32 *p_max); 1187 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1188 unsigned int sb_index, u16 tc_index, 1189 enum devlink_sb_pool_type pool_type, 1190 u32 *p_cur, u32 *p_max); 1191 1192 /* 1193 * MTU change functionality. Switches can also adjust their MRU through 1194 * this method. By MTU, one understands the SDU (L2 payload) length. 1195 * If the switch needs to account for the DSA tag on the CPU port, this 1196 * method needs to do so privately. 1197 */ 1198 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1199 int new_mtu); 1200 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1201 1202 /* 1203 * LAG integration 1204 */ 1205 int (*port_lag_change)(struct dsa_switch *ds, int port); 1206 int (*port_lag_join)(struct dsa_switch *ds, int port, 1207 struct dsa_lag lag, 1208 struct netdev_lag_upper_info *info, 1209 struct netlink_ext_ack *extack); 1210 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1211 struct dsa_lag lag); 1212 1213 /* 1214 * HSR integration 1215 */ 1216 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1217 struct net_device *hsr, 1218 struct netlink_ext_ack *extack); 1219 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1220 struct net_device *hsr); 1221 1222 /* 1223 * MRP integration 1224 */ 1225 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1226 const struct switchdev_obj_mrp *mrp); 1227 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1228 const struct switchdev_obj_mrp *mrp); 1229 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1230 const struct switchdev_obj_ring_role_mrp *mrp); 1231 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1232 const struct switchdev_obj_ring_role_mrp *mrp); 1233 1234 /* 1235 * tag_8021q operations 1236 */ 1237 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1238 u16 flags); 1239 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1240 1241 /* 1242 * DSA conduit tracking operations 1243 */ 1244 void (*conduit_state_change)(struct dsa_switch *ds, 1245 const struct net_device *conduit, 1246 bool operational); 1247 }; 1248 1249 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1250 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1251 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1252 1253 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1254 struct devlink_param_gset_ctx *ctx, 1255 struct netlink_ext_ack *extack); 1256 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1257 struct devlink_param_gset_ctx *ctx, 1258 struct netlink_ext_ack *extack); 1259 int dsa_devlink_params_register(struct dsa_switch *ds, 1260 const struct devlink_param *params, 1261 size_t params_count); 1262 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1263 const struct devlink_param *params, 1264 size_t params_count); 1265 int dsa_devlink_resource_register(struct dsa_switch *ds, 1266 const char *resource_name, 1267 u64 resource_size, 1268 u64 resource_id, 1269 u64 parent_resource_id, 1270 const struct devlink_resource_size_params *size_params); 1271 1272 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1273 1274 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1275 u64 resource_id, 1276 devlink_resource_occ_get_t *occ_get, 1277 void *occ_get_priv); 1278 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1279 u64 resource_id); 1280 struct devlink_region * 1281 dsa_devlink_region_create(struct dsa_switch *ds, 1282 const struct devlink_region_ops *ops, 1283 u32 region_max_snapshots, u64 region_size); 1284 struct devlink_region * 1285 dsa_devlink_port_region_create(struct dsa_switch *ds, 1286 int port, 1287 const struct devlink_port_region_ops *ops, 1288 u32 region_max_snapshots, u64 region_size); 1289 void dsa_devlink_region_destroy(struct devlink_region *region); 1290 1291 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1292 1293 struct dsa_devlink_priv { 1294 struct dsa_switch *ds; 1295 }; 1296 1297 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1298 { 1299 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1300 1301 return dl_priv->ds; 1302 } 1303 1304 static inline 1305 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1306 { 1307 struct devlink *dl = port->devlink; 1308 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1309 1310 return dl_priv->ds; 1311 } 1312 1313 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1314 { 1315 return port->index; 1316 } 1317 1318 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1319 const unsigned char *addr, u16 vid, 1320 struct dsa_db db); 1321 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1322 const struct switchdev_obj_port_mdb *mdb, 1323 struct dsa_db db); 1324 1325 int dsa_port_simple_hsr_validate(struct dsa_switch *ds, int port, 1326 struct net_device *hsr, 1327 struct netlink_ext_ack *extack); 1328 int dsa_port_simple_hsr_join(struct dsa_switch *ds, int port, 1329 struct net_device *hsr, 1330 struct netlink_ext_ack *extack); 1331 int dsa_port_simple_hsr_leave(struct dsa_switch *ds, int port, 1332 struct net_device *hsr); 1333 1334 /* Keep inline for faster access in hot path */ 1335 static inline bool netdev_uses_dsa(const struct net_device *dev) 1336 { 1337 #if IS_ENABLED(CONFIG_NET_DSA) 1338 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1339 #endif 1340 return false; 1341 } 1342 1343 /* All DSA tags that push the EtherType to the right (basically all except tail 1344 * tags, which don't break dissection) can be treated the same from the 1345 * perspective of the flow dissector. 1346 * 1347 * We need to return: 1348 * - offset: the (B - A) difference between: 1349 * A. the position of the real EtherType and 1350 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1351 * after the normal EtherType was supposed to be) 1352 * The offset in bytes is exactly equal to the tagger overhead (and half of 1353 * that, in __be16 shorts). 1354 * 1355 * - proto: the value of the real EtherType. 1356 */ 1357 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1358 __be16 *proto, int *offset) 1359 { 1360 #if IS_ENABLED(CONFIG_NET_DSA) 1361 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1362 int tag_len = ops->needed_headroom; 1363 1364 *offset = tag_len; 1365 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1366 #endif 1367 } 1368 1369 void dsa_unregister_switch(struct dsa_switch *ds); 1370 int dsa_register_switch(struct dsa_switch *ds); 1371 void dsa_switch_shutdown(struct dsa_switch *ds); 1372 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1373 void dsa_flush_workqueue(void); 1374 #ifdef CONFIG_PM_SLEEP 1375 int dsa_switch_suspend(struct dsa_switch *ds); 1376 int dsa_switch_resume(struct dsa_switch *ds); 1377 #else 1378 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1379 { 1380 return 0; 1381 } 1382 static inline int dsa_switch_resume(struct dsa_switch *ds) 1383 { 1384 return 0; 1385 } 1386 #endif /* CONFIG_PM_SLEEP */ 1387 1388 #if IS_ENABLED(CONFIG_NET_DSA) 1389 bool dsa_user_dev_check(const struct net_device *dev); 1390 #else 1391 static inline bool dsa_user_dev_check(const struct net_device *dev) 1392 { 1393 return false; 1394 } 1395 #endif 1396 1397 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1398 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1399 bool dsa_supports_eee(struct dsa_switch *ds, int port); 1400 1401 #endif 1402