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 #define DSA_TAG_PROTO_MXL862_VALUE 32 61 #define DSA_TAG_PROTO_NETC_VALUE 33 62 #define DSA_TAG_PROTO_KSZ8463_VALUE 34 63 #define DSA_TAG_PROTO_MT7628_VALUE 35 64 #define DSA_TAG_PROTO_KS8995_VALUE 36 65 66 enum dsa_tag_protocol { 67 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 68 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 69 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 70 DSA_TAG_PROTO_BRCM_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE, 71 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 72 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 73 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 74 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 75 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 76 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 77 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 78 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 79 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 80 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 81 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 82 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 83 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 84 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 85 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 86 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 87 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 88 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 89 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 90 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 91 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 92 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 93 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 94 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 95 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 96 DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE, 97 DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE, 98 DSA_TAG_PROTO_MXL_GSW1XX = DSA_TAG_PROTO_MXL_GSW1XX_VALUE, 99 DSA_TAG_PROTO_MXL862 = DSA_TAG_PROTO_MXL862_VALUE, 100 DSA_TAG_PROTO_NETC = DSA_TAG_PROTO_NETC_VALUE, 101 DSA_TAG_PROTO_KSZ8463 = DSA_TAG_PROTO_KSZ8463_VALUE, 102 DSA_TAG_PROTO_MT7628 = DSA_TAG_PROTO_MT7628_VALUE, 103 DSA_TAG_PROTO_KS8995 = DSA_TAG_PROTO_KS8995_VALUE, 104 }; 105 106 struct dsa_switch; 107 108 struct dsa_device_ops { 109 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 110 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 111 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 112 int *offset); 113 int (*connect)(struct dsa_switch *ds); 114 void (*disconnect)(struct dsa_switch *ds); 115 unsigned int needed_headroom; 116 unsigned int needed_tailroom; 117 const char *name; 118 enum dsa_tag_protocol proto; 119 /* Some tagging protocols either mangle or shift the destination MAC 120 * address, in which case the DSA conduit would drop packets on ingress 121 * if what it understands out of the destination MAC address is not in 122 * its RX filter. 123 */ 124 bool promisc_on_conduit; 125 }; 126 127 struct dsa_lag { 128 struct net_device *dev; 129 unsigned int id; 130 struct mutex fdb_lock; 131 struct list_head fdbs; 132 refcount_t refcount; 133 }; 134 135 struct dsa_switch_tree { 136 struct list_head list; 137 138 /* List of switch ports */ 139 struct list_head ports; 140 141 /* Notifier chain for switch-wide events */ 142 struct raw_notifier_head nh; 143 144 /* Tree identifier */ 145 unsigned int index; 146 147 /* Number of switches attached to this tree */ 148 struct kref refcount; 149 150 /* Maps offloaded LAG netdevs to a zero-based linear ID for 151 * drivers that need it. 152 */ 153 struct dsa_lag **lags; 154 155 /* Tagging protocol operations */ 156 const struct dsa_device_ops *tag_ops; 157 158 /* Default tagging protocol preferred by the switches in this 159 * tree. 160 */ 161 enum dsa_tag_protocol default_proto; 162 163 /* Has this tree been applied to the hardware? */ 164 bool setup; 165 166 /* 167 * Configuration data for the platform device that owns 168 * this dsa switch tree instance. 169 */ 170 struct dsa_platform_data *pd; 171 172 /* List of DSA links composing the routing table */ 173 struct list_head rtable; 174 175 /* Length of "lags" array */ 176 unsigned int lags_len; 177 178 /* Track the largest switch index within a tree */ 179 unsigned int last_switch; 180 }; 181 182 /* LAG IDs are one-based, the dst->lags array is zero-based */ 183 #define dsa_lags_foreach_id(_id, _dst) \ 184 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 185 if ((_dst)->lags[(_id) - 1]) 186 187 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 188 list_for_each_entry((_dp), &(_dst)->ports, list) \ 189 if (dsa_port_offloads_lag((_dp), (_lag))) 190 191 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 192 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 193 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 194 195 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 196 unsigned int id) 197 { 198 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 199 return dst->lags[id - 1]; 200 } 201 202 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 203 struct net_device *lag_dev) 204 { 205 unsigned int id; 206 207 dsa_lags_foreach_id(id, dst) { 208 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 209 210 if (lag->dev == lag_dev) 211 return lag->id; 212 } 213 214 return -ENODEV; 215 } 216 217 /* TC matchall action types */ 218 enum dsa_port_mall_action_type { 219 DSA_PORT_MALL_MIRROR, 220 DSA_PORT_MALL_POLICER, 221 }; 222 223 /* TC mirroring entry */ 224 struct dsa_mall_mirror_tc_entry { 225 u8 to_local_port; 226 bool ingress; 227 }; 228 229 /* TC matchall entry */ 230 struct dsa_mall_tc_entry { 231 struct list_head list; 232 unsigned long cookie; 233 enum dsa_port_mall_action_type type; 234 union { 235 struct dsa_mall_mirror_tc_entry mirror; 236 struct flow_action_police policer; 237 }; 238 }; 239 240 struct dsa_bridge { 241 struct net_device *dev; 242 unsigned int num; 243 bool tx_fwd_offload; 244 refcount_t refcount; 245 }; 246 247 struct dsa_port { 248 /* A CPU port is physically connected to a conduit device. A user port 249 * exposes a network device to user-space, called 'user' here. 250 */ 251 union { 252 struct net_device *conduit; 253 struct net_device *user; 254 }; 255 256 /* Copy of the tagging protocol operations, for quicker access 257 * in the data path. Valid only for the CPU ports. 258 */ 259 const struct dsa_device_ops *tag_ops; 260 261 /* Copies for faster access in conduit receive hot path */ 262 struct dsa_switch_tree *dst; 263 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 264 265 struct dsa_switch *ds; 266 267 unsigned int index; 268 269 enum { 270 DSA_PORT_TYPE_UNUSED = 0, 271 DSA_PORT_TYPE_CPU, 272 DSA_PORT_TYPE_DSA, 273 DSA_PORT_TYPE_USER, 274 } type; 275 276 const char *name; 277 struct dsa_port *cpu_dp; 278 u8 mac[ETH_ALEN]; 279 280 u8 stp_state; 281 282 /* Warning: the following bit fields are not atomic, and updating them 283 * can only be done from code paths where concurrency is not possible 284 * (probe time or under rtnl_lock). 285 */ 286 u8 vlan_filtering:1; 287 288 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 289 u8 learning:1; 290 291 u8 lag_tx_enabled:1; 292 293 /* conduit state bits, valid only on CPU ports */ 294 u8 conduit_admin_up:1; 295 u8 conduit_oper_up:1; 296 297 /* Valid only on user ports */ 298 u8 cpu_port_in_lag:1; 299 300 u8 setup:1; 301 302 struct device_node *dn; 303 unsigned int ageing_time; 304 305 struct dsa_bridge *bridge; 306 struct devlink_port devlink_port; 307 struct phylink *pl; 308 struct phylink_config pl_config; 309 netdevice_tracker conduit_tracker; 310 struct dsa_lag *lag; 311 struct net_device *hsr_dev; 312 313 struct list_head list; 314 315 /* 316 * Original copy of the conduit netdev ethtool_ops 317 */ 318 const struct ethtool_ops *orig_ethtool_ops; 319 320 /* List of MAC addresses that must be forwarded on this port. 321 * These are only valid on CPU ports and DSA links. 322 */ 323 struct mutex addr_lists_lock; 324 struct list_head fdbs; 325 struct list_head mdbs; 326 327 struct mutex vlans_lock; 328 union { 329 /* List of VLANs that CPU and DSA ports are members of. 330 * Access to this is serialized by the sleepable @vlans_lock. 331 */ 332 struct list_head vlans; 333 /* List of VLANs that user ports are members of. 334 * Access to this is serialized by netif_addr_lock_bh(). 335 */ 336 struct list_head user_vlans; 337 }; 338 }; 339 340 static inline struct dsa_port * 341 dsa_phylink_to_port(struct phylink_config *config) 342 { 343 return container_of(config, struct dsa_port, pl_config); 344 } 345 346 /* TODO: ideally DSA ports would have a single dp->link_dp member, 347 * and no dst->rtable nor this struct dsa_link would be needed, 348 * but this would require some more complex tree walking, 349 * so keep it stupid at the moment and list them all. 350 */ 351 struct dsa_link { 352 struct dsa_port *dp; 353 struct dsa_port *link_dp; 354 struct list_head list; 355 }; 356 357 enum dsa_db_type { 358 DSA_DB_PORT, 359 DSA_DB_LAG, 360 DSA_DB_BRIDGE, 361 }; 362 363 struct dsa_db { 364 enum dsa_db_type type; 365 366 union { 367 const struct dsa_port *dp; 368 struct dsa_lag lag; 369 struct dsa_bridge bridge; 370 }; 371 }; 372 373 struct dsa_mac_addr { 374 unsigned char addr[ETH_ALEN]; 375 u16 vid; 376 refcount_t refcount; 377 struct list_head list; 378 struct dsa_db db; 379 }; 380 381 struct dsa_vlan { 382 u16 vid; 383 refcount_t refcount; 384 struct list_head list; 385 }; 386 387 struct dsa_switch { 388 struct device *dev; 389 390 /* 391 * Parent switch tree, and switch index. 392 */ 393 struct dsa_switch_tree *dst; 394 unsigned int index; 395 396 /* Warning: the following bit fields are not atomic, and updating them 397 * can only be done from code paths where concurrency is not possible 398 * (probe time or under rtnl_lock). 399 */ 400 u32 setup:1; 401 402 /* Disallow bridge core from requesting different VLAN awareness 403 * settings on ports if not hardware-supported 404 */ 405 u32 vlan_filtering_is_global:1; 406 407 /* Keep VLAN filtering enabled on ports not offloading any upper */ 408 u32 needs_standalone_vlan_filtering:1; 409 410 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 411 * that have vlan_filtering=0. All drivers should ideally set this (and 412 * then the option would get removed), but it is unknown whether this 413 * would break things or not. 414 */ 415 u32 configure_vlan_while_not_filtering:1; 416 417 /* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames. 418 * DEPRECATED: Do NOT set this field in new drivers. Instead look at 419 * the dsa_software_vlan_untag() comments. 420 */ 421 u32 untag_bridge_pvid:1; 422 /* Pop the default_pvid of VLAN-aware bridge ports from tagged frames. 423 * Useful if the switch cannot preserve the VLAN tag as seen on the 424 * wire for user port ingress, and chooses to send all frames as 425 * VLAN-tagged to the CPU, including those which were originally 426 * untagged. 427 */ 428 u32 untag_vlan_aware_bridge_pvid:1; 429 430 /* Let DSA manage the FDB entries towards the 431 * CPU, based on the software bridge database. 432 */ 433 u32 assisted_learning_on_cpu_port:1; 434 435 /* In case vlan_filtering_is_global is set, the VLAN awareness state 436 * should be retrieved from here and not from the per-port settings. 437 */ 438 u32 vlan_filtering:1; 439 440 /* For switches that only have the MRU configurable. To ensure the 441 * configured MTU is not exceeded, normalization of MRU on all bridged 442 * interfaces is needed. 443 */ 444 u32 mtu_enforcement_ingress:1; 445 446 /* Drivers that isolate the FDBs of multiple bridges must set this 447 * to true to receive the bridge as an argument in .port_fdb_{add,del} 448 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 449 * passed as zero. 450 */ 451 u32 fdb_isolation:1; 452 453 /* Drivers that have global DSCP mapping settings must set this to 454 * true to automatically apply the settings to all ports. 455 */ 456 u32 dscp_prio_mapping_is_global:1; 457 458 /* Listener for switch fabric events */ 459 struct notifier_block nb; 460 461 /* 462 * Give the switch driver somewhere to hang its private data 463 * structure. 464 */ 465 void *priv; 466 467 void *tagger_data; 468 469 /* 470 * Configuration data for this switch. 471 */ 472 struct dsa_chip_data *cd; 473 474 /* 475 * The switch operations. 476 */ 477 const struct dsa_switch_ops *ops; 478 479 /* 480 * Allow a DSA switch driver to override the phylink MAC ops 481 */ 482 const struct phylink_mac_ops *phylink_mac_ops; 483 484 /* 485 * User mii_bus and devices for the individual ports. 486 */ 487 u32 phys_mii_mask; 488 struct mii_bus *user_mii_bus; 489 490 /* Ageing Time limits in msecs */ 491 unsigned int ageing_time_min; 492 unsigned int ageing_time_max; 493 494 /* Storage for drivers using tag_8021q */ 495 struct dsa_8021q_context *tag_8021q_ctx; 496 497 /* devlink used to represent this switch device */ 498 struct devlink *devlink; 499 500 /* Number of switch port queues */ 501 unsigned int num_tx_queues; 502 503 /* Drivers that benefit from having an ID associated with each 504 * offloaded LAG should set this to the maximum number of 505 * supported IDs. DSA will then maintain a mapping of _at 506 * least_ these many IDs, accessible to drivers via 507 * dsa_lag_id(). 508 */ 509 unsigned int num_lag_ids; 510 511 /* Drivers that support bridge forwarding offload or FDB isolation 512 * should set this to the maximum number of bridges spanning the same 513 * switch tree (or all trees, in the case of cross-tree bridging 514 * support) that can be offloaded. 515 */ 516 unsigned int max_num_bridges; 517 518 unsigned int num_ports; 519 }; 520 521 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 522 { 523 struct dsa_switch_tree *dst = ds->dst; 524 struct dsa_port *dp; 525 526 list_for_each_entry(dp, &dst->ports, list) 527 if (dp->ds == ds && dp->index == p) 528 return dp; 529 530 return NULL; 531 } 532 533 static inline bool dsa_port_is_dsa(struct dsa_port *port) 534 { 535 return port->type == DSA_PORT_TYPE_DSA; 536 } 537 538 static inline bool dsa_port_is_cpu(struct dsa_port *port) 539 { 540 return port->type == DSA_PORT_TYPE_CPU; 541 } 542 543 static inline bool dsa_port_is_user(struct dsa_port *dp) 544 { 545 return dp->type == DSA_PORT_TYPE_USER; 546 } 547 548 static inline bool dsa_port_is_unused(struct dsa_port *dp) 549 { 550 return dp->type == DSA_PORT_TYPE_UNUSED; 551 } 552 553 static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp) 554 { 555 return dsa_port_is_cpu(dp) && dp->conduit_admin_up && 556 dp->conduit_oper_up; 557 } 558 559 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 560 { 561 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 562 } 563 564 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 565 { 566 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 567 } 568 569 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 570 { 571 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 572 } 573 574 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 575 { 576 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 577 } 578 579 #define dsa_tree_for_each_user_port(_dp, _dst) \ 580 list_for_each_entry((_dp), &(_dst)->ports, list) \ 581 if (dsa_port_is_user((_dp))) 582 583 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 584 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 585 if (dsa_port_is_user((_dp))) 586 587 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 588 list_for_each_entry((_dp), &(_dst)->ports, list) \ 589 if (dsa_port_is_cpu((_dp))) 590 591 #define dsa_switch_for_each_port(_dp, _ds) \ 592 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 593 if ((_dp)->ds == (_ds)) 594 595 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 596 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 597 if ((_dp)->ds == (_ds)) 598 599 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 600 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 601 if ((_dp)->ds == (_ds)) 602 603 #define dsa_switch_for_each_available_port(_dp, _ds) \ 604 dsa_switch_for_each_port((_dp), (_ds)) \ 605 if (!dsa_port_is_unused((_dp))) 606 607 #define dsa_switch_for_each_user_port(_dp, _ds) \ 608 dsa_switch_for_each_port((_dp), (_ds)) \ 609 if (dsa_port_is_user((_dp))) 610 611 #define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \ 612 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 613 if (dsa_port_is_user((_dp))) 614 615 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 616 dsa_switch_for_each_port((_dp), (_ds)) \ 617 if (dsa_port_is_cpu((_dp))) 618 619 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 620 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 621 if (dsa_port_is_cpu((_dp))) 622 623 static inline u32 dsa_user_ports(struct dsa_switch *ds) 624 { 625 struct dsa_port *dp; 626 u32 mask = 0; 627 628 dsa_switch_for_each_user_port(dp, ds) 629 mask |= BIT(dp->index); 630 631 return mask; 632 } 633 634 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 635 { 636 struct dsa_port *cpu_dp; 637 u32 mask = 0; 638 639 dsa_switch_for_each_cpu_port(cpu_dp, ds) 640 mask |= BIT(cpu_dp->index); 641 642 return mask; 643 } 644 645 /* Return the local port used to reach an arbitrary switch device */ 646 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 647 { 648 struct dsa_switch_tree *dst = ds->dst; 649 struct dsa_link *dl; 650 651 list_for_each_entry(dl, &dst->rtable, list) 652 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 653 return dl->dp->index; 654 655 return ds->num_ports; 656 } 657 658 /* Return the local port used to reach an arbitrary switch port */ 659 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 660 int port) 661 { 662 if (device == ds->index) 663 return port; 664 else 665 return dsa_routing_port(ds, device); 666 } 667 668 /* Return the local port used to reach the dedicated CPU port */ 669 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 670 { 671 const struct dsa_port *dp = dsa_to_port(ds, port); 672 const struct dsa_port *cpu_dp = dp->cpu_dp; 673 674 if (!cpu_dp) 675 return port; 676 677 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 678 } 679 680 /* Return true if this is the local port used to reach the CPU port */ 681 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 682 { 683 if (dsa_is_unused_port(ds, port)) 684 return false; 685 686 return port == dsa_upstream_port(ds, port); 687 } 688 689 /* Return true if this is a DSA port leading away from the CPU */ 690 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 691 { 692 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 693 } 694 695 /* Return the local port used to reach the CPU port */ 696 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 697 { 698 struct dsa_port *dp; 699 700 dsa_switch_for_each_available_port(dp, ds) { 701 return dsa_upstream_port(ds, dp->index); 702 } 703 704 return ds->num_ports; 705 } 706 707 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 708 * that the routing port from @downstream_ds to @upstream_ds is also the port 709 * which @downstream_ds uses to reach its dedicated CPU. 710 */ 711 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 712 struct dsa_switch *downstream_ds) 713 { 714 int routing_port; 715 716 if (upstream_ds == downstream_ds) 717 return true; 718 719 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 720 721 return dsa_is_upstream_port(downstream_ds, routing_port); 722 } 723 724 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 725 { 726 const struct dsa_switch *ds = dp->ds; 727 728 if (ds->vlan_filtering_is_global) 729 return ds->vlan_filtering; 730 else 731 return dp->vlan_filtering; 732 } 733 734 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 735 { 736 return dp->lag ? dp->lag->id : 0; 737 } 738 739 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 740 { 741 return dp->lag ? dp->lag->dev : NULL; 742 } 743 744 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 745 const struct dsa_lag *lag) 746 { 747 return dsa_port_lag_dev_get(dp) == lag->dev; 748 } 749 750 static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp) 751 { 752 if (dp->cpu_port_in_lag) 753 return dsa_port_lag_dev_get(dp->cpu_dp); 754 755 return dp->cpu_dp->conduit; 756 } 757 758 static inline 759 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 760 { 761 if (!dp->bridge) 762 return NULL; 763 764 if (dp->lag) 765 return dp->lag->dev; 766 else if (dp->hsr_dev) 767 return dp->hsr_dev; 768 769 return dp->user; 770 } 771 772 static inline struct net_device * 773 dsa_port_bridge_dev_get(const struct dsa_port *dp) 774 { 775 return dp->bridge ? dp->bridge->dev : NULL; 776 } 777 778 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 779 { 780 return dp->bridge ? dp->bridge->num : 0; 781 } 782 783 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 784 const struct dsa_port *b) 785 { 786 struct net_device *br_a = dsa_port_bridge_dev_get(a); 787 struct net_device *br_b = dsa_port_bridge_dev_get(b); 788 789 /* Standalone ports are not in the same bridge with one another */ 790 return (!br_a || !br_b) ? false : (br_a == br_b); 791 } 792 793 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 794 const struct net_device *dev) 795 { 796 return dsa_port_to_bridge_port(dp) == dev; 797 } 798 799 static inline bool 800 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 801 const struct net_device *bridge_dev) 802 { 803 /* DSA ports connected to a bridge, and event was emitted 804 * for the bridge. 805 */ 806 return dsa_port_bridge_dev_get(dp) == bridge_dev; 807 } 808 809 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 810 const struct dsa_bridge *bridge) 811 { 812 return dsa_port_bridge_dev_get(dp) == bridge->dev; 813 } 814 815 /* Returns true if any port of this tree offloads the given net_device */ 816 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 817 const struct net_device *dev) 818 { 819 struct dsa_port *dp; 820 821 list_for_each_entry(dp, &dst->ports, list) 822 if (dsa_port_offloads_bridge_port(dp, dev)) 823 return true; 824 825 return false; 826 } 827 828 /* Returns true if any port of this tree offloads the given bridge */ 829 static inline bool 830 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 831 const struct net_device *bridge_dev) 832 { 833 struct dsa_port *dp; 834 835 list_for_each_entry(dp, &dst->ports, list) 836 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 837 return true; 838 839 return false; 840 } 841 842 #define dsa_switch_for_each_bridge_member(_dp, _ds, _bdev) \ 843 dsa_switch_for_each_user_port(_dp, _ds) \ 844 if (dsa_port_offloads_bridge_dev(_dp, _bdev)) 845 846 static inline u32 847 dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev) 848 { 849 struct dsa_port *dp; 850 u32 mask = 0; 851 852 dsa_switch_for_each_bridge_member(dp, ds, bdev) 853 mask |= BIT(dp->index); 854 855 return mask; 856 } 857 858 static inline bool dsa_port_tree_same(const struct dsa_port *a, 859 const struct dsa_port *b) 860 { 861 return a->ds->dst == b->ds->dst; 862 } 863 864 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 865 bool is_static, void *data); 866 struct dsa_switch_ops { 867 /* 868 * Tagging protocol helpers called for the CPU ports and DSA links. 869 * @get_tag_protocol retrieves the initial tagging protocol and is 870 * mandatory. Switches which can operate using multiple tagging 871 * protocols should implement @change_tag_protocol and report in 872 * @get_tag_protocol the tagger in current use. 873 */ 874 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 875 int port, 876 enum dsa_tag_protocol mprot); 877 int (*change_tag_protocol)(struct dsa_switch *ds, 878 enum dsa_tag_protocol proto); 879 /* 880 * Method for switch drivers to connect to the tagging protocol driver 881 * in current use. The switch driver can provide handlers for certain 882 * types of packets for switch management. 883 */ 884 int (*connect_tag_protocol)(struct dsa_switch *ds, 885 enum dsa_tag_protocol proto); 886 887 int (*port_change_conduit)(struct dsa_switch *ds, int port, 888 struct net_device *conduit, 889 struct netlink_ext_ack *extack); 890 891 /* Optional switch-wide initialization and destruction methods */ 892 int (*setup)(struct dsa_switch *ds); 893 void (*teardown)(struct dsa_switch *ds); 894 895 /* Per-port initialization and destruction methods. Mandatory if the 896 * driver registers devlink port regions, optional otherwise. 897 */ 898 int (*port_setup)(struct dsa_switch *ds, int port); 899 void (*port_teardown)(struct dsa_switch *ds, int port); 900 901 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 902 903 /* 904 * Access to the switch's PHY registers. 905 */ 906 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 907 int (*phy_write)(struct dsa_switch *ds, int port, 908 int regnum, u16 val); 909 910 /* 911 * PHYLINK integration 912 */ 913 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 914 struct phylink_config *config); 915 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 916 struct phylink_link_state *state); 917 /* 918 * Port statistics counters. 919 */ 920 void (*get_strings)(struct dsa_switch *ds, int port, 921 u32 stringset, uint8_t *data); 922 void (*get_ethtool_stats)(struct dsa_switch *ds, 923 int port, uint64_t *data); 924 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 925 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 926 int port, uint64_t *data); 927 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 928 struct ethtool_eth_phy_stats *phy_stats); 929 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 930 struct ethtool_eth_mac_stats *mac_stats); 931 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 932 struct ethtool_eth_ctrl_stats *ctrl_stats); 933 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 934 struct ethtool_rmon_stats *rmon_stats, 935 const struct ethtool_rmon_hist_range **ranges); 936 void (*get_ts_stats)(struct dsa_switch *ds, int port, 937 struct ethtool_ts_stats *ts_stats); 938 void (*get_stats64)(struct dsa_switch *ds, int port, 939 struct rtnl_link_stats64 *s); 940 void (*get_pause_stats)(struct dsa_switch *ds, int port, 941 struct ethtool_pause_stats *pause_stats); 942 void (*self_test)(struct dsa_switch *ds, int port, 943 struct ethtool_test *etest, u64 *data); 944 945 /* 946 * ethtool Wake-on-LAN 947 */ 948 void (*get_wol)(struct dsa_switch *ds, int port, 949 struct ethtool_wolinfo *w); 950 int (*set_wol)(struct dsa_switch *ds, int port, 951 struct ethtool_wolinfo *w); 952 953 /* 954 * ethtool timestamp info 955 */ 956 int (*get_ts_info)(struct dsa_switch *ds, int port, 957 struct kernel_ethtool_ts_info *ts); 958 959 /* 960 * ethtool MAC merge layer 961 */ 962 int (*get_mm)(struct dsa_switch *ds, int port, 963 struct ethtool_mm_state *state); 964 int (*set_mm)(struct dsa_switch *ds, int port, 965 struct ethtool_mm_cfg *cfg, 966 struct netlink_ext_ack *extack); 967 void (*get_mm_stats)(struct dsa_switch *ds, int port, 968 struct ethtool_mm_stats *stats); 969 970 /* 971 * DCB ops 972 */ 973 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 974 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 975 u8 prio); 976 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 977 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 978 u8 prio); 979 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 980 u8 prio); 981 int (*port_set_apptrust)(struct dsa_switch *ds, int port, 982 const u8 *sel, int nsel); 983 int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel, 984 int *nsel); 985 986 /* 987 * Suspend and resume 988 */ 989 int (*suspend)(struct dsa_switch *ds); 990 int (*resume)(struct dsa_switch *ds); 991 992 /* 993 * Port enable/disable 994 */ 995 int (*port_enable)(struct dsa_switch *ds, int port, 996 struct phy_device *phy); 997 void (*port_disable)(struct dsa_switch *ds, int port); 998 999 1000 /* 1001 * Notification for MAC address changes on user ports. Drivers can 1002 * currently only veto operations. They should not use the method to 1003 * program the hardware, since the operation is not rolled back in case 1004 * of other errors. 1005 */ 1006 int (*port_set_mac_address)(struct dsa_switch *ds, int port, 1007 const unsigned char *addr); 1008 1009 /* 1010 * Compatibility between device trees defining multiple CPU ports and 1011 * drivers which are not OK to use by default the numerically smallest 1012 * CPU port of a switch for its local ports. This can return NULL, 1013 * meaning "don't know/don't care". 1014 */ 1015 struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds); 1016 1017 /* 1018 * Port's MAC EEE settings 1019 */ 1020 bool (*support_eee)(struct dsa_switch *ds, int port); 1021 int (*set_mac_eee)(struct dsa_switch *ds, int port, 1022 struct ethtool_keee *e); 1023 1024 /* EEPROM access */ 1025 int (*get_eeprom_len)(struct dsa_switch *ds); 1026 int (*get_eeprom)(struct dsa_switch *ds, 1027 struct ethtool_eeprom *eeprom, u8 *data); 1028 int (*set_eeprom)(struct dsa_switch *ds, 1029 struct ethtool_eeprom *eeprom, u8 *data); 1030 1031 /* 1032 * Register access. 1033 */ 1034 int (*get_regs_len)(struct dsa_switch *ds, int port); 1035 void (*get_regs)(struct dsa_switch *ds, int port, 1036 struct ethtool_regs *regs, void *p); 1037 1038 /* 1039 * Upper device tracking. 1040 */ 1041 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 1042 struct netdev_notifier_changeupper_info *info); 1043 1044 /* 1045 * Bridge integration 1046 */ 1047 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 1048 int (*port_bridge_join)(struct dsa_switch *ds, int port, 1049 struct dsa_bridge bridge, 1050 bool *tx_fwd_offload, 1051 struct netlink_ext_ack *extack); 1052 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1053 struct dsa_bridge bridge); 1054 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1055 u8 state); 1056 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1057 const struct switchdev_mst_state *state); 1058 void (*port_fast_age)(struct dsa_switch *ds, int port); 1059 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1060 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1061 struct switchdev_brport_flags flags, 1062 struct netlink_ext_ack *extack); 1063 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1064 struct switchdev_brport_flags flags, 1065 struct netlink_ext_ack *extack); 1066 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1067 bool uc, bool mc); 1068 1069 /* 1070 * VLAN support 1071 */ 1072 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1073 bool vlan_filtering, 1074 struct netlink_ext_ack *extack); 1075 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1076 const struct switchdev_obj_port_vlan *vlan, 1077 struct netlink_ext_ack *extack); 1078 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1079 const struct switchdev_obj_port_vlan *vlan); 1080 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1081 const struct switchdev_vlan_msti *msti); 1082 1083 /* 1084 * Forwarding database 1085 */ 1086 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1087 const unsigned char *addr, u16 vid, 1088 struct dsa_db db); 1089 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1090 const unsigned char *addr, u16 vid, 1091 struct dsa_db db); 1092 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1093 dsa_fdb_dump_cb_t *cb, void *data); 1094 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1095 const unsigned char *addr, u16 vid, 1096 struct dsa_db db); 1097 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1098 const unsigned char *addr, u16 vid, 1099 struct dsa_db db); 1100 1101 /* 1102 * Multicast database 1103 */ 1104 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1105 const struct switchdev_obj_port_mdb *mdb, 1106 struct dsa_db db); 1107 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1108 const struct switchdev_obj_port_mdb *mdb, 1109 struct dsa_db db); 1110 /* 1111 * RXNFC 1112 */ 1113 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1114 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1115 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1116 struct ethtool_rxnfc *nfc); 1117 1118 /* 1119 * TC integration 1120 */ 1121 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1122 struct flow_cls_offload *cls, bool ingress); 1123 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1124 struct flow_cls_offload *cls, bool ingress); 1125 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1126 struct flow_cls_offload *cls, bool ingress); 1127 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1128 struct dsa_mall_mirror_tc_entry *mirror, 1129 bool ingress, struct netlink_ext_ack *extack); 1130 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1131 struct dsa_mall_mirror_tc_entry *mirror); 1132 int (*port_policer_add)(struct dsa_switch *ds, int port, 1133 const struct flow_action_police *policer, 1134 struct netlink_ext_ack *extack); 1135 void (*port_policer_del)(struct dsa_switch *ds, int port); 1136 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1137 enum tc_setup_type type, void *type_data); 1138 1139 /* 1140 * Cross-chip operations 1141 */ 1142 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1143 int sw_index, int port, 1144 struct dsa_bridge bridge, 1145 struct netlink_ext_ack *extack); 1146 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1147 int sw_index, int port, 1148 struct dsa_bridge bridge); 1149 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1150 int port); 1151 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1152 int port, struct dsa_lag lag, 1153 struct netdev_lag_upper_info *info, 1154 struct netlink_ext_ack *extack); 1155 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1156 int port, struct dsa_lag lag); 1157 1158 /* 1159 * PTP functionality 1160 */ 1161 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1162 struct kernel_hwtstamp_config *config); 1163 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1164 struct kernel_hwtstamp_config *config, 1165 struct netlink_ext_ack *extack); 1166 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1167 struct sk_buff *skb); 1168 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1169 struct sk_buff *skb, unsigned int type); 1170 1171 /* Devlink parameters, etc */ 1172 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1173 struct devlink_param_gset_ctx *ctx); 1174 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1175 struct devlink_param_gset_ctx *ctx); 1176 int (*devlink_info_get)(struct dsa_switch *ds, 1177 struct devlink_info_req *req, 1178 struct netlink_ext_ack *extack); 1179 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1180 unsigned int sb_index, u16 pool_index, 1181 struct devlink_sb_pool_info *pool_info); 1182 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1183 u16 pool_index, u32 size, 1184 enum devlink_sb_threshold_type threshold_type, 1185 struct netlink_ext_ack *extack); 1186 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1187 unsigned int sb_index, u16 pool_index, 1188 u32 *p_threshold); 1189 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1190 unsigned int sb_index, u16 pool_index, 1191 u32 threshold, 1192 struct netlink_ext_ack *extack); 1193 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1194 unsigned int sb_index, u16 tc_index, 1195 enum devlink_sb_pool_type pool_type, 1196 u16 *p_pool_index, u32 *p_threshold); 1197 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1198 unsigned int sb_index, u16 tc_index, 1199 enum devlink_sb_pool_type pool_type, 1200 u16 pool_index, u32 threshold, 1201 struct netlink_ext_ack *extack); 1202 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1203 unsigned int sb_index); 1204 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1205 unsigned int sb_index); 1206 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1207 unsigned int sb_index, u16 pool_index, 1208 u32 *p_cur, u32 *p_max); 1209 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1210 unsigned int sb_index, u16 tc_index, 1211 enum devlink_sb_pool_type pool_type, 1212 u32 *p_cur, u32 *p_max); 1213 1214 /* 1215 * MTU change functionality. Switches can also adjust their MRU through 1216 * this method. By MTU, one understands the SDU (L2 payload) length. 1217 * If the switch needs to account for the DSA tag on the CPU port, this 1218 * method needs to do so privately. 1219 */ 1220 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1221 int new_mtu); 1222 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1223 1224 /* 1225 * LAG integration 1226 */ 1227 int (*port_lag_change)(struct dsa_switch *ds, int port); 1228 int (*port_lag_join)(struct dsa_switch *ds, int port, 1229 struct dsa_lag lag, 1230 struct netdev_lag_upper_info *info, 1231 struct netlink_ext_ack *extack); 1232 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1233 struct dsa_lag lag); 1234 1235 /* 1236 * HSR integration 1237 */ 1238 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1239 struct net_device *hsr, 1240 struct netlink_ext_ack *extack); 1241 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1242 struct net_device *hsr); 1243 1244 /* 1245 * MRP integration 1246 */ 1247 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1248 const struct switchdev_obj_mrp *mrp); 1249 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1250 const struct switchdev_obj_mrp *mrp); 1251 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1252 const struct switchdev_obj_ring_role_mrp *mrp); 1253 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1254 const struct switchdev_obj_ring_role_mrp *mrp); 1255 1256 /* 1257 * tag_8021q operations 1258 */ 1259 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1260 u16 flags); 1261 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1262 1263 /* 1264 * DSA conduit tracking operations 1265 */ 1266 void (*conduit_state_change)(struct dsa_switch *ds, 1267 const struct net_device *conduit, 1268 bool operational); 1269 }; 1270 1271 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1272 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1273 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1274 1275 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1276 struct devlink_param_gset_ctx *ctx, 1277 struct netlink_ext_ack *extack); 1278 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1279 struct devlink_param_gset_ctx *ctx, 1280 struct netlink_ext_ack *extack); 1281 int dsa_devlink_params_register(struct dsa_switch *ds, 1282 const struct devlink_param *params, 1283 size_t params_count); 1284 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1285 const struct devlink_param *params, 1286 size_t params_count); 1287 int dsa_devlink_resource_register(struct dsa_switch *ds, 1288 const char *resource_name, 1289 u64 resource_size, 1290 u64 resource_id, 1291 u64 parent_resource_id, 1292 const struct devlink_resource_size_params *size_params); 1293 1294 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1295 1296 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1297 u64 resource_id, 1298 devlink_resource_occ_get_t *occ_get, 1299 void *occ_get_priv); 1300 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1301 u64 resource_id); 1302 struct devlink_region * 1303 dsa_devlink_region_create(struct dsa_switch *ds, 1304 const struct devlink_region_ops *ops, 1305 u32 region_max_snapshots, u64 region_size); 1306 struct devlink_region * 1307 dsa_devlink_port_region_create(struct dsa_switch *ds, 1308 int port, 1309 const struct devlink_port_region_ops *ops, 1310 u32 region_max_snapshots, u64 region_size); 1311 void dsa_devlink_region_destroy(struct devlink_region *region); 1312 1313 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1314 1315 struct dsa_devlink_priv { 1316 struct dsa_switch *ds; 1317 }; 1318 1319 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1320 { 1321 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1322 1323 return dl_priv->ds; 1324 } 1325 1326 static inline 1327 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1328 { 1329 struct devlink *dl = port->devlink; 1330 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1331 1332 return dl_priv->ds; 1333 } 1334 1335 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1336 { 1337 return port->index; 1338 } 1339 1340 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1341 const unsigned char *addr, u16 vid, 1342 struct dsa_db db); 1343 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1344 const struct switchdev_obj_port_mdb *mdb, 1345 struct dsa_db db); 1346 1347 int dsa_port_simple_hsr_validate(struct dsa_switch *ds, int port, 1348 struct net_device *hsr, 1349 struct netlink_ext_ack *extack); 1350 int dsa_port_simple_hsr_join(struct dsa_switch *ds, int port, 1351 struct net_device *hsr, 1352 struct netlink_ext_ack *extack); 1353 int dsa_port_simple_hsr_leave(struct dsa_switch *ds, int port, 1354 struct net_device *hsr); 1355 1356 /* Keep inline for faster access in hot path */ 1357 static inline bool netdev_uses_dsa(const struct net_device *dev) 1358 { 1359 #if IS_ENABLED(CONFIG_NET_DSA) 1360 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1361 #endif 1362 return false; 1363 } 1364 1365 /* All DSA tags that push the EtherType to the right (basically all except tail 1366 * tags, which don't break dissection) can be treated the same from the 1367 * perspective of the flow dissector. 1368 * 1369 * We need to return: 1370 * - offset: the (B - A) difference between: 1371 * A. the position of the real EtherType and 1372 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1373 * after the normal EtherType was supposed to be) 1374 * The offset in bytes is exactly equal to the tagger overhead (and half of 1375 * that, in __be16 shorts). 1376 * 1377 * - proto: the value of the real EtherType. 1378 */ 1379 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1380 __be16 *proto, int *offset) 1381 { 1382 #if IS_ENABLED(CONFIG_NET_DSA) 1383 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1384 int tag_len = ops->needed_headroom; 1385 1386 *offset = tag_len; 1387 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1388 #endif 1389 } 1390 1391 void dsa_unregister_switch(struct dsa_switch *ds); 1392 int dsa_register_switch(struct dsa_switch *ds); 1393 void dsa_switch_shutdown(struct dsa_switch *ds); 1394 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1395 void dsa_flush_workqueue(void); 1396 #ifdef CONFIG_PM_SLEEP 1397 int dsa_switch_suspend(struct dsa_switch *ds); 1398 int dsa_switch_resume(struct dsa_switch *ds); 1399 #else 1400 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1401 { 1402 return 0; 1403 } 1404 static inline int dsa_switch_resume(struct dsa_switch *ds) 1405 { 1406 return 0; 1407 } 1408 #endif /* CONFIG_PM_SLEEP */ 1409 1410 #if IS_ENABLED(CONFIG_NET_DSA) 1411 bool dsa_user_dev_check(const struct net_device *dev); 1412 #else 1413 static inline bool dsa_user_dev_check(const struct net_device *dev) 1414 { 1415 return false; 1416 } 1417 #endif 1418 1419 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1420 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1421 bool dsa_supports_eee(struct dsa_switch *ds, int port); 1422 1423 #endif 1424