1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips 4 * Copyright (c) 2008-2009 Marvell Semiconductor 5 */ 6 7 #ifndef __LINUX_NET_DSA_H 8 #define __LINUX_NET_DSA_H 9 10 #include <linux/if.h> 11 #include <linux/if_ether.h> 12 #include <linux/list.h> 13 #include <linux/notifier.h> 14 #include <linux/timer.h> 15 #include <linux/workqueue.h> 16 #include <linux/of.h> 17 #include <linux/ethtool.h> 18 #include <linux/net_tstamp.h> 19 #include <linux/phy.h> 20 #include <linux/platform_data/dsa.h> 21 #include <linux/phylink.h> 22 #include <net/devlink.h> 23 #include <net/switchdev.h> 24 25 struct dsa_8021q_context; 26 struct tc_action; 27 struct phy_device; 28 struct fixed_phy_status; 29 struct phylink_link_state; 30 31 #define DSA_TAG_PROTO_NONE_VALUE 0 32 #define DSA_TAG_PROTO_BRCM_VALUE 1 33 #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 34 #define DSA_TAG_PROTO_DSA_VALUE 3 35 #define DSA_TAG_PROTO_EDSA_VALUE 4 36 #define DSA_TAG_PROTO_GSWIP_VALUE 5 37 #define DSA_TAG_PROTO_KSZ9477_VALUE 6 38 #define DSA_TAG_PROTO_KSZ9893_VALUE 7 39 #define DSA_TAG_PROTO_LAN9303_VALUE 8 40 #define DSA_TAG_PROTO_MTK_VALUE 9 41 #define DSA_TAG_PROTO_QCA_VALUE 10 42 #define DSA_TAG_PROTO_TRAILER_VALUE 11 43 #define DSA_TAG_PROTO_8021Q_VALUE 12 44 #define DSA_TAG_PROTO_SJA1105_VALUE 13 45 #define DSA_TAG_PROTO_KSZ8795_VALUE 14 46 #define DSA_TAG_PROTO_OCELOT_VALUE 15 47 #define DSA_TAG_PROTO_AR9331_VALUE 16 48 #define DSA_TAG_PROTO_RTL4_A_VALUE 17 49 #define DSA_TAG_PROTO_HELLCREEK_VALUE 18 50 #define DSA_TAG_PROTO_XRS700X_VALUE 19 51 #define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 52 #define DSA_TAG_PROTO_SEVILLE_VALUE 21 53 #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 54 #define DSA_TAG_PROTO_SJA1110_VALUE 23 55 #define DSA_TAG_PROTO_RTL8_4_VALUE 24 56 #define DSA_TAG_PROTO_RTL8_4T_VALUE 25 57 #define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26 58 #define DSA_TAG_PROTO_LAN937X_VALUE 27 59 60 enum dsa_tag_protocol { 61 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 62 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 63 DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE, 64 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 65 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 66 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 67 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 68 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 69 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 70 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 71 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 72 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 73 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 74 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 75 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 76 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 77 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 78 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 79 DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, 80 DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, 81 DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, 82 DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, 83 DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_VALUE, 84 DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, 85 DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, 86 DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, 87 DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, 88 DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, 89 }; 90 91 struct dsa_switch; 92 93 struct dsa_device_ops { 94 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 95 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 96 void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 97 int *offset); 98 int (*connect)(struct dsa_switch *ds); 99 void (*disconnect)(struct dsa_switch *ds); 100 unsigned int needed_headroom; 101 unsigned int needed_tailroom; 102 const char *name; 103 enum dsa_tag_protocol proto; 104 /* Some tagging protocols either mangle or shift the destination MAC 105 * address, in which case the DSA master would drop packets on ingress 106 * if what it understands out of the destination MAC address is not in 107 * its RX filter. 108 */ 109 bool promisc_on_master; 110 }; 111 112 /* This structure defines the control interfaces that are overlayed by the 113 * DSA layer on top of the DSA CPU/management net_device instance. This is 114 * used by the core net_device layer while calling various net_device_ops 115 * function pointers. 116 */ 117 struct dsa_netdevice_ops { 118 int (*ndo_eth_ioctl)(struct net_device *dev, struct ifreq *ifr, 119 int cmd); 120 }; 121 122 struct dsa_lag { 123 struct net_device *dev; 124 unsigned int id; 125 struct mutex fdb_lock; 126 struct list_head fdbs; 127 refcount_t refcount; 128 }; 129 130 struct dsa_switch_tree { 131 struct list_head list; 132 133 /* List of switch ports */ 134 struct list_head ports; 135 136 /* Notifier chain for switch-wide events */ 137 struct raw_notifier_head nh; 138 139 /* Tree identifier */ 140 unsigned int index; 141 142 /* Number of switches attached to this tree */ 143 struct kref refcount; 144 145 /* Maps offloaded LAG netdevs to a zero-based linear ID for 146 * drivers that need it. 147 */ 148 struct dsa_lag **lags; 149 150 /* Tagging protocol operations */ 151 const struct dsa_device_ops *tag_ops; 152 153 /* Default tagging protocol preferred by the switches in this 154 * tree. 155 */ 156 enum dsa_tag_protocol default_proto; 157 158 /* Has this tree been applied to the hardware? */ 159 bool setup; 160 161 /* 162 * Configuration data for the platform device that owns 163 * this dsa switch tree instance. 164 */ 165 struct dsa_platform_data *pd; 166 167 /* List of DSA links composing the routing table */ 168 struct list_head rtable; 169 170 /* Length of "lags" array */ 171 unsigned int lags_len; 172 173 /* Track the largest switch index within a tree */ 174 unsigned int last_switch; 175 }; 176 177 /* LAG IDs are one-based, the dst->lags array is zero-based */ 178 #define dsa_lags_foreach_id(_id, _dst) \ 179 for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ 180 if ((_dst)->lags[(_id) - 1]) 181 182 #define dsa_lag_foreach_port(_dp, _dst, _lag) \ 183 list_for_each_entry((_dp), &(_dst)->ports, list) \ 184 if (dsa_port_offloads_lag((_dp), (_lag))) 185 186 #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ 187 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 188 if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) 189 190 static inline struct dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, 191 unsigned int id) 192 { 193 /* DSA LAG IDs are one-based, dst->lags is zero-based */ 194 return dst->lags[id - 1]; 195 } 196 197 static inline int dsa_lag_id(struct dsa_switch_tree *dst, 198 struct net_device *lag_dev) 199 { 200 unsigned int id; 201 202 dsa_lags_foreach_id(id, dst) { 203 struct dsa_lag *lag = dsa_lag_by_id(dst, id); 204 205 if (lag->dev == lag_dev) 206 return lag->id; 207 } 208 209 return -ENODEV; 210 } 211 212 /* TC matchall action types */ 213 enum dsa_port_mall_action_type { 214 DSA_PORT_MALL_MIRROR, 215 DSA_PORT_MALL_POLICER, 216 }; 217 218 /* TC mirroring entry */ 219 struct dsa_mall_mirror_tc_entry { 220 u8 to_local_port; 221 bool ingress; 222 }; 223 224 /* TC port policer entry */ 225 struct dsa_mall_policer_tc_entry { 226 u32 burst; 227 u64 rate_bytes_per_sec; 228 }; 229 230 /* TC matchall entry */ 231 struct dsa_mall_tc_entry { 232 struct list_head list; 233 unsigned long cookie; 234 enum dsa_port_mall_action_type type; 235 union { 236 struct dsa_mall_mirror_tc_entry mirror; 237 struct dsa_mall_policer_tc_entry policer; 238 }; 239 }; 240 241 struct dsa_bridge { 242 struct net_device *dev; 243 unsigned int num; 244 bool tx_fwd_offload; 245 refcount_t refcount; 246 }; 247 248 struct dsa_port { 249 /* A CPU port is physically connected to a master device. 250 * A user port exposed to userspace has a slave device. 251 */ 252 union { 253 struct net_device *master; 254 struct net_device *slave; 255 }; 256 257 /* Copy of the tagging protocol operations, for quicker access 258 * in the data path. Valid only for the CPU ports. 259 */ 260 const struct dsa_device_ops *tag_ops; 261 262 /* Copies for faster access in master receive hot path */ 263 struct dsa_switch_tree *dst; 264 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev); 265 266 struct dsa_switch *ds; 267 268 unsigned int index; 269 270 enum { 271 DSA_PORT_TYPE_UNUSED = 0, 272 DSA_PORT_TYPE_CPU, 273 DSA_PORT_TYPE_DSA, 274 DSA_PORT_TYPE_USER, 275 } type; 276 277 const char *name; 278 struct dsa_port *cpu_dp; 279 u8 mac[ETH_ALEN]; 280 281 u8 stp_state; 282 283 /* Warning: the following bit fields are not atomic, and updating them 284 * can only be done from code paths where concurrency is not possible 285 * (probe time or under rtnl_lock). 286 */ 287 u8 vlan_filtering:1; 288 289 /* Managed by DSA on user ports and by drivers on CPU and DSA ports */ 290 u8 learning:1; 291 292 u8 lag_tx_enabled:1; 293 294 /* Master state bits, valid only on CPU ports */ 295 u8 master_admin_up:1; 296 u8 master_oper_up:1; 297 298 /* Valid only on user ports */ 299 u8 cpu_port_in_lag:1; 300 301 u8 setup:1; 302 303 struct device_node *dn; 304 unsigned int ageing_time; 305 306 struct dsa_bridge *bridge; 307 struct devlink_port devlink_port; 308 struct phylink *pl; 309 struct phylink_config pl_config; 310 struct dsa_lag *lag; 311 struct net_device *hsr_dev; 312 313 struct list_head list; 314 315 /* 316 * Original copy of the master netdev ethtool_ops 317 */ 318 const struct ethtool_ops *orig_ethtool_ops; 319 320 /* 321 * Original copy of the master netdev net_device_ops 322 */ 323 const struct dsa_netdevice_ops *netdev_ops; 324 325 /* List of MAC addresses that must be forwarded on this port. 326 * These are only valid on CPU ports and DSA links. 327 */ 328 struct mutex addr_lists_lock; 329 struct list_head fdbs; 330 struct list_head mdbs; 331 332 /* List of VLANs that CPU and DSA ports are members of. */ 333 struct mutex vlans_lock; 334 struct list_head vlans; 335 }; 336 337 /* TODO: ideally DSA ports would have a single dp->link_dp member, 338 * and no dst->rtable nor this struct dsa_link would be needed, 339 * but this would require some more complex tree walking, 340 * so keep it stupid at the moment and list them all. 341 */ 342 struct dsa_link { 343 struct dsa_port *dp; 344 struct dsa_port *link_dp; 345 struct list_head list; 346 }; 347 348 enum dsa_db_type { 349 DSA_DB_PORT, 350 DSA_DB_LAG, 351 DSA_DB_BRIDGE, 352 }; 353 354 struct dsa_db { 355 enum dsa_db_type type; 356 357 union { 358 const struct dsa_port *dp; 359 struct dsa_lag lag; 360 struct dsa_bridge bridge; 361 }; 362 }; 363 364 struct dsa_mac_addr { 365 unsigned char addr[ETH_ALEN]; 366 u16 vid; 367 refcount_t refcount; 368 struct list_head list; 369 struct dsa_db db; 370 }; 371 372 struct dsa_vlan { 373 u16 vid; 374 refcount_t refcount; 375 struct list_head list; 376 }; 377 378 struct dsa_switch { 379 struct device *dev; 380 381 /* 382 * Parent switch tree, and switch index. 383 */ 384 struct dsa_switch_tree *dst; 385 unsigned int index; 386 387 /* Warning: the following bit fields are not atomic, and updating them 388 * can only be done from code paths where concurrency is not possible 389 * (probe time or under rtnl_lock). 390 */ 391 u32 setup:1; 392 393 /* Disallow bridge core from requesting different VLAN awareness 394 * settings on ports if not hardware-supported 395 */ 396 u32 vlan_filtering_is_global:1; 397 398 /* Keep VLAN filtering enabled on ports not offloading any upper */ 399 u32 needs_standalone_vlan_filtering:1; 400 401 /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges 402 * that have vlan_filtering=0. All drivers should ideally set this (and 403 * then the option would get removed), but it is unknown whether this 404 * would break things or not. 405 */ 406 u32 configure_vlan_while_not_filtering:1; 407 408 /* If the switch driver always programs the CPU port as egress tagged 409 * despite the VLAN configuration indicating otherwise, then setting 410 * @untag_bridge_pvid will force the DSA receive path to pop the 411 * bridge's default_pvid VLAN tagged frames to offer a consistent 412 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge 413 * device. 414 */ 415 u32 untag_bridge_pvid:1; 416 417 /* Let DSA manage the FDB entries towards the 418 * CPU, based on the software bridge database. 419 */ 420 u32 assisted_learning_on_cpu_port:1; 421 422 /* In case vlan_filtering_is_global is set, the VLAN awareness state 423 * should be retrieved from here and not from the per-port settings. 424 */ 425 u32 vlan_filtering:1; 426 427 /* For switches that only have the MRU configurable. To ensure the 428 * configured MTU is not exceeded, normalization of MRU on all bridged 429 * interfaces is needed. 430 */ 431 u32 mtu_enforcement_ingress:1; 432 433 /* Drivers that isolate the FDBs of multiple bridges must set this 434 * to true to receive the bridge as an argument in .port_fdb_{add,del} 435 * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be 436 * passed as zero. 437 */ 438 u32 fdb_isolation:1; 439 440 /* Listener for switch fabric events */ 441 struct notifier_block nb; 442 443 /* 444 * Give the switch driver somewhere to hang its private data 445 * structure. 446 */ 447 void *priv; 448 449 void *tagger_data; 450 451 /* 452 * Configuration data for this switch. 453 */ 454 struct dsa_chip_data *cd; 455 456 /* 457 * The switch operations. 458 */ 459 const struct dsa_switch_ops *ops; 460 461 /* 462 * Slave mii_bus and devices for the individual ports. 463 */ 464 u32 phys_mii_mask; 465 struct mii_bus *slave_mii_bus; 466 467 /* Ageing Time limits in msecs */ 468 unsigned int ageing_time_min; 469 unsigned int ageing_time_max; 470 471 /* Storage for drivers using tag_8021q */ 472 struct dsa_8021q_context *tag_8021q_ctx; 473 474 /* devlink used to represent this switch device */ 475 struct devlink *devlink; 476 477 /* Number of switch port queues */ 478 unsigned int num_tx_queues; 479 480 /* Drivers that benefit from having an ID associated with each 481 * offloaded LAG should set this to the maximum number of 482 * supported IDs. DSA will then maintain a mapping of _at 483 * least_ these many IDs, accessible to drivers via 484 * dsa_lag_id(). 485 */ 486 unsigned int num_lag_ids; 487 488 /* Drivers that support bridge forwarding offload or FDB isolation 489 * should set this to the maximum number of bridges spanning the same 490 * switch tree (or all trees, in the case of cross-tree bridging 491 * support) that can be offloaded. 492 */ 493 unsigned int max_num_bridges; 494 495 unsigned int num_ports; 496 }; 497 498 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 499 { 500 struct dsa_switch_tree *dst = ds->dst; 501 struct dsa_port *dp; 502 503 list_for_each_entry(dp, &dst->ports, list) 504 if (dp->ds == ds && dp->index == p) 505 return dp; 506 507 return NULL; 508 } 509 510 static inline bool dsa_port_is_dsa(struct dsa_port *port) 511 { 512 return port->type == DSA_PORT_TYPE_DSA; 513 } 514 515 static inline bool dsa_port_is_cpu(struct dsa_port *port) 516 { 517 return port->type == DSA_PORT_TYPE_CPU; 518 } 519 520 static inline bool dsa_port_is_user(struct dsa_port *dp) 521 { 522 return dp->type == DSA_PORT_TYPE_USER; 523 } 524 525 static inline bool dsa_port_is_unused(struct dsa_port *dp) 526 { 527 return dp->type == DSA_PORT_TYPE_UNUSED; 528 } 529 530 static inline bool dsa_port_master_is_operational(struct dsa_port *dp) 531 { 532 return dsa_port_is_cpu(dp) && dp->master_admin_up && 533 dp->master_oper_up; 534 } 535 536 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 537 { 538 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 539 } 540 541 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 542 { 543 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 544 } 545 546 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 547 { 548 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 549 } 550 551 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 552 { 553 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 554 } 555 556 #define dsa_tree_for_each_user_port(_dp, _dst) \ 557 list_for_each_entry((_dp), &(_dst)->ports, list) \ 558 if (dsa_port_is_user((_dp))) 559 560 #define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ 561 list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ 562 if (dsa_port_is_user((_dp))) 563 564 #define dsa_tree_for_each_cpu_port(_dp, _dst) \ 565 list_for_each_entry((_dp), &(_dst)->ports, list) \ 566 if (dsa_port_is_cpu((_dp))) 567 568 #define dsa_switch_for_each_port(_dp, _ds) \ 569 list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ 570 if ((_dp)->ds == (_ds)) 571 572 #define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ 573 list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ 574 if ((_dp)->ds == (_ds)) 575 576 #define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ 577 list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ 578 if ((_dp)->ds == (_ds)) 579 580 #define dsa_switch_for_each_available_port(_dp, _ds) \ 581 dsa_switch_for_each_port((_dp), (_ds)) \ 582 if (!dsa_port_is_unused((_dp))) 583 584 #define dsa_switch_for_each_user_port(_dp, _ds) \ 585 dsa_switch_for_each_port((_dp), (_ds)) \ 586 if (dsa_port_is_user((_dp))) 587 588 #define dsa_switch_for_each_cpu_port(_dp, _ds) \ 589 dsa_switch_for_each_port((_dp), (_ds)) \ 590 if (dsa_port_is_cpu((_dp))) 591 592 #define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ 593 dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ 594 if (dsa_port_is_cpu((_dp))) 595 596 static inline u32 dsa_user_ports(struct dsa_switch *ds) 597 { 598 struct dsa_port *dp; 599 u32 mask = 0; 600 601 dsa_switch_for_each_user_port(dp, ds) 602 mask |= BIT(dp->index); 603 604 return mask; 605 } 606 607 static inline u32 dsa_cpu_ports(struct dsa_switch *ds) 608 { 609 struct dsa_port *cpu_dp; 610 u32 mask = 0; 611 612 dsa_switch_for_each_cpu_port(cpu_dp, ds) 613 mask |= BIT(cpu_dp->index); 614 615 return mask; 616 } 617 618 /* Return the local port used to reach an arbitrary switch device */ 619 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 620 { 621 struct dsa_switch_tree *dst = ds->dst; 622 struct dsa_link *dl; 623 624 list_for_each_entry(dl, &dst->rtable, list) 625 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 626 return dl->dp->index; 627 628 return ds->num_ports; 629 } 630 631 /* Return the local port used to reach an arbitrary switch port */ 632 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 633 int port) 634 { 635 if (device == ds->index) 636 return port; 637 else 638 return dsa_routing_port(ds, device); 639 } 640 641 /* Return the local port used to reach the dedicated CPU port */ 642 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 643 { 644 const struct dsa_port *dp = dsa_to_port(ds, port); 645 const struct dsa_port *cpu_dp = dp->cpu_dp; 646 647 if (!cpu_dp) 648 return port; 649 650 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 651 } 652 653 /* Return true if this is the local port used to reach the CPU port */ 654 static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port) 655 { 656 if (dsa_is_unused_port(ds, port)) 657 return false; 658 659 return port == dsa_upstream_port(ds, port); 660 } 661 662 /* Return true if this is a DSA port leading away from the CPU */ 663 static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port) 664 { 665 return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port); 666 } 667 668 /* Return the local port used to reach the CPU port */ 669 static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds) 670 { 671 struct dsa_port *dp; 672 673 dsa_switch_for_each_available_port(dp, ds) { 674 return dsa_upstream_port(ds, dp->index); 675 } 676 677 return ds->num_ports; 678 } 679 680 /* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning 681 * that the routing port from @downstream_ds to @upstream_ds is also the port 682 * which @downstream_ds uses to reach its dedicated CPU. 683 */ 684 static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, 685 struct dsa_switch *downstream_ds) 686 { 687 int routing_port; 688 689 if (upstream_ds == downstream_ds) 690 return true; 691 692 routing_port = dsa_routing_port(downstream_ds, upstream_ds->index); 693 694 return dsa_is_upstream_port(downstream_ds, routing_port); 695 } 696 697 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 698 { 699 const struct dsa_switch *ds = dp->ds; 700 701 if (ds->vlan_filtering_is_global) 702 return ds->vlan_filtering; 703 else 704 return dp->vlan_filtering; 705 } 706 707 static inline unsigned int dsa_port_lag_id_get(struct dsa_port *dp) 708 { 709 return dp->lag ? dp->lag->id : 0; 710 } 711 712 static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp) 713 { 714 return dp->lag ? dp->lag->dev : NULL; 715 } 716 717 static inline bool dsa_port_offloads_lag(struct dsa_port *dp, 718 const struct dsa_lag *lag) 719 { 720 return dsa_port_lag_dev_get(dp) == lag->dev; 721 } 722 723 static inline struct net_device *dsa_port_to_master(const struct dsa_port *dp) 724 { 725 if (dp->cpu_port_in_lag) 726 return dsa_port_lag_dev_get(dp->cpu_dp); 727 728 return dp->cpu_dp->master; 729 } 730 731 static inline 732 struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) 733 { 734 if (!dp->bridge) 735 return NULL; 736 737 if (dp->lag) 738 return dp->lag->dev; 739 else if (dp->hsr_dev) 740 return dp->hsr_dev; 741 742 return dp->slave; 743 } 744 745 static inline struct net_device * 746 dsa_port_bridge_dev_get(const struct dsa_port *dp) 747 { 748 return dp->bridge ? dp->bridge->dev : NULL; 749 } 750 751 static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp) 752 { 753 return dp->bridge ? dp->bridge->num : 0; 754 } 755 756 static inline bool dsa_port_bridge_same(const struct dsa_port *a, 757 const struct dsa_port *b) 758 { 759 struct net_device *br_a = dsa_port_bridge_dev_get(a); 760 struct net_device *br_b = dsa_port_bridge_dev_get(b); 761 762 /* Standalone ports are not in the same bridge with one another */ 763 return (!br_a || !br_b) ? false : (br_a == br_b); 764 } 765 766 static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, 767 const struct net_device *dev) 768 { 769 return dsa_port_to_bridge_port(dp) == dev; 770 } 771 772 static inline bool 773 dsa_port_offloads_bridge_dev(struct dsa_port *dp, 774 const struct net_device *bridge_dev) 775 { 776 /* DSA ports connected to a bridge, and event was emitted 777 * for the bridge. 778 */ 779 return dsa_port_bridge_dev_get(dp) == bridge_dev; 780 } 781 782 static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, 783 const struct dsa_bridge *bridge) 784 { 785 return dsa_port_bridge_dev_get(dp) == bridge->dev; 786 } 787 788 /* Returns true if any port of this tree offloads the given net_device */ 789 static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, 790 const struct net_device *dev) 791 { 792 struct dsa_port *dp; 793 794 list_for_each_entry(dp, &dst->ports, list) 795 if (dsa_port_offloads_bridge_port(dp, dev)) 796 return true; 797 798 return false; 799 } 800 801 /* Returns true if any port of this tree offloads the given bridge */ 802 static inline bool 803 dsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, 804 const struct net_device *bridge_dev) 805 { 806 struct dsa_port *dp; 807 808 list_for_each_entry(dp, &dst->ports, list) 809 if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) 810 return true; 811 812 return false; 813 } 814 815 static inline bool dsa_port_tree_same(const struct dsa_port *a, 816 const struct dsa_port *b) 817 { 818 return a->ds->dst == b->ds->dst; 819 } 820 821 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 822 bool is_static, void *data); 823 struct dsa_switch_ops { 824 /* 825 * Tagging protocol helpers called for the CPU ports and DSA links. 826 * @get_tag_protocol retrieves the initial tagging protocol and is 827 * mandatory. Switches which can operate using multiple tagging 828 * protocols should implement @change_tag_protocol and report in 829 * @get_tag_protocol the tagger in current use. 830 */ 831 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 832 int port, 833 enum dsa_tag_protocol mprot); 834 int (*change_tag_protocol)(struct dsa_switch *ds, 835 enum dsa_tag_protocol proto); 836 /* 837 * Method for switch drivers to connect to the tagging protocol driver 838 * in current use. The switch driver can provide handlers for certain 839 * types of packets for switch management. 840 */ 841 int (*connect_tag_protocol)(struct dsa_switch *ds, 842 enum dsa_tag_protocol proto); 843 844 int (*port_change_master)(struct dsa_switch *ds, int port, 845 struct net_device *master, 846 struct netlink_ext_ack *extack); 847 848 /* Optional switch-wide initialization and destruction methods */ 849 int (*setup)(struct dsa_switch *ds); 850 void (*teardown)(struct dsa_switch *ds); 851 852 /* Per-port initialization and destruction methods. Mandatory if the 853 * driver registers devlink port regions, optional otherwise. 854 */ 855 int (*port_setup)(struct dsa_switch *ds, int port); 856 void (*port_teardown)(struct dsa_switch *ds, int port); 857 858 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 859 860 /* 861 * Access to the switch's PHY registers. 862 */ 863 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 864 int (*phy_write)(struct dsa_switch *ds, int port, 865 int regnum, u16 val); 866 867 /* 868 * Link state adjustment (called from libphy) 869 */ 870 void (*adjust_link)(struct dsa_switch *ds, int port, 871 struct phy_device *phydev); 872 void (*fixed_link_update)(struct dsa_switch *ds, int port, 873 struct fixed_phy_status *st); 874 875 /* 876 * PHYLINK integration 877 */ 878 void (*phylink_get_caps)(struct dsa_switch *ds, int port, 879 struct phylink_config *config); 880 struct phylink_pcs *(*phylink_mac_select_pcs)(struct dsa_switch *ds, 881 int port, 882 phy_interface_t iface); 883 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, 884 struct phylink_link_state *state); 885 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 886 unsigned int mode, 887 const struct phylink_link_state *state); 888 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); 889 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 890 unsigned int mode, 891 phy_interface_t interface); 892 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 893 unsigned int mode, 894 phy_interface_t interface, 895 struct phy_device *phydev, 896 int speed, int duplex, 897 bool tx_pause, bool rx_pause); 898 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 899 struct phylink_link_state *state); 900 /* 901 * Port statistics counters. 902 */ 903 void (*get_strings)(struct dsa_switch *ds, int port, 904 u32 stringset, uint8_t *data); 905 void (*get_ethtool_stats)(struct dsa_switch *ds, 906 int port, uint64_t *data); 907 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 908 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 909 int port, uint64_t *data); 910 void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, 911 struct ethtool_eth_phy_stats *phy_stats); 912 void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, 913 struct ethtool_eth_mac_stats *mac_stats); 914 void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, 915 struct ethtool_eth_ctrl_stats *ctrl_stats); 916 void (*get_rmon_stats)(struct dsa_switch *ds, int port, 917 struct ethtool_rmon_stats *rmon_stats, 918 const struct ethtool_rmon_hist_range **ranges); 919 void (*get_stats64)(struct dsa_switch *ds, int port, 920 struct rtnl_link_stats64 *s); 921 void (*get_pause_stats)(struct dsa_switch *ds, int port, 922 struct ethtool_pause_stats *pause_stats); 923 void (*self_test)(struct dsa_switch *ds, int port, 924 struct ethtool_test *etest, u64 *data); 925 926 /* 927 * ethtool Wake-on-LAN 928 */ 929 void (*get_wol)(struct dsa_switch *ds, int port, 930 struct ethtool_wolinfo *w); 931 int (*set_wol)(struct dsa_switch *ds, int port, 932 struct ethtool_wolinfo *w); 933 934 /* 935 * ethtool timestamp info 936 */ 937 int (*get_ts_info)(struct dsa_switch *ds, int port, 938 struct ethtool_ts_info *ts); 939 940 /* 941 * DCB ops 942 */ 943 int (*port_get_default_prio)(struct dsa_switch *ds, int port); 944 int (*port_set_default_prio)(struct dsa_switch *ds, int port, 945 u8 prio); 946 int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); 947 int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 948 u8 prio); 949 int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, 950 u8 prio); 951 952 /* 953 * Suspend and resume 954 */ 955 int (*suspend)(struct dsa_switch *ds); 956 int (*resume)(struct dsa_switch *ds); 957 958 /* 959 * Port enable/disable 960 */ 961 int (*port_enable)(struct dsa_switch *ds, int port, 962 struct phy_device *phy); 963 void (*port_disable)(struct dsa_switch *ds, int port); 964 965 /* 966 * Port's MAC EEE settings 967 */ 968 int (*set_mac_eee)(struct dsa_switch *ds, int port, 969 struct ethtool_eee *e); 970 int (*get_mac_eee)(struct dsa_switch *ds, int port, 971 struct ethtool_eee *e); 972 973 /* EEPROM access */ 974 int (*get_eeprom_len)(struct dsa_switch *ds); 975 int (*get_eeprom)(struct dsa_switch *ds, 976 struct ethtool_eeprom *eeprom, u8 *data); 977 int (*set_eeprom)(struct dsa_switch *ds, 978 struct ethtool_eeprom *eeprom, u8 *data); 979 980 /* 981 * Register access. 982 */ 983 int (*get_regs_len)(struct dsa_switch *ds, int port); 984 void (*get_regs)(struct dsa_switch *ds, int port, 985 struct ethtool_regs *regs, void *p); 986 987 /* 988 * Upper device tracking. 989 */ 990 int (*port_prechangeupper)(struct dsa_switch *ds, int port, 991 struct netdev_notifier_changeupper_info *info); 992 993 /* 994 * Bridge integration 995 */ 996 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 997 int (*port_bridge_join)(struct dsa_switch *ds, int port, 998 struct dsa_bridge bridge, 999 bool *tx_fwd_offload, 1000 struct netlink_ext_ack *extack); 1001 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 1002 struct dsa_bridge bridge); 1003 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 1004 u8 state); 1005 int (*port_mst_state_set)(struct dsa_switch *ds, int port, 1006 const struct switchdev_mst_state *state); 1007 void (*port_fast_age)(struct dsa_switch *ds, int port); 1008 int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); 1009 int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, 1010 struct switchdev_brport_flags flags, 1011 struct netlink_ext_ack *extack); 1012 int (*port_bridge_flags)(struct dsa_switch *ds, int port, 1013 struct switchdev_brport_flags flags, 1014 struct netlink_ext_ack *extack); 1015 void (*port_set_host_flood)(struct dsa_switch *ds, int port, 1016 bool uc, bool mc); 1017 1018 /* 1019 * VLAN support 1020 */ 1021 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 1022 bool vlan_filtering, 1023 struct netlink_ext_ack *extack); 1024 int (*port_vlan_add)(struct dsa_switch *ds, int port, 1025 const struct switchdev_obj_port_vlan *vlan, 1026 struct netlink_ext_ack *extack); 1027 int (*port_vlan_del)(struct dsa_switch *ds, int port, 1028 const struct switchdev_obj_port_vlan *vlan); 1029 int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, 1030 const struct switchdev_vlan_msti *msti); 1031 1032 /* 1033 * Forwarding database 1034 */ 1035 int (*port_fdb_add)(struct dsa_switch *ds, int port, 1036 const unsigned char *addr, u16 vid, 1037 struct dsa_db db); 1038 int (*port_fdb_del)(struct dsa_switch *ds, int port, 1039 const unsigned char *addr, u16 vid, 1040 struct dsa_db db); 1041 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 1042 dsa_fdb_dump_cb_t *cb, void *data); 1043 int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, 1044 const unsigned char *addr, u16 vid, 1045 struct dsa_db db); 1046 int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, 1047 const unsigned char *addr, u16 vid, 1048 struct dsa_db db); 1049 1050 /* 1051 * Multicast database 1052 */ 1053 int (*port_mdb_add)(struct dsa_switch *ds, int port, 1054 const struct switchdev_obj_port_mdb *mdb, 1055 struct dsa_db db); 1056 int (*port_mdb_del)(struct dsa_switch *ds, int port, 1057 const struct switchdev_obj_port_mdb *mdb, 1058 struct dsa_db db); 1059 /* 1060 * RXNFC 1061 */ 1062 int (*get_rxnfc)(struct dsa_switch *ds, int port, 1063 struct ethtool_rxnfc *nfc, u32 *rule_locs); 1064 int (*set_rxnfc)(struct dsa_switch *ds, int port, 1065 struct ethtool_rxnfc *nfc); 1066 1067 /* 1068 * TC integration 1069 */ 1070 int (*cls_flower_add)(struct dsa_switch *ds, int port, 1071 struct flow_cls_offload *cls, bool ingress); 1072 int (*cls_flower_del)(struct dsa_switch *ds, int port, 1073 struct flow_cls_offload *cls, bool ingress); 1074 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 1075 struct flow_cls_offload *cls, bool ingress); 1076 int (*port_mirror_add)(struct dsa_switch *ds, int port, 1077 struct dsa_mall_mirror_tc_entry *mirror, 1078 bool ingress, struct netlink_ext_ack *extack); 1079 void (*port_mirror_del)(struct dsa_switch *ds, int port, 1080 struct dsa_mall_mirror_tc_entry *mirror); 1081 int (*port_policer_add)(struct dsa_switch *ds, int port, 1082 struct dsa_mall_policer_tc_entry *policer); 1083 void (*port_policer_del)(struct dsa_switch *ds, int port); 1084 int (*port_setup_tc)(struct dsa_switch *ds, int port, 1085 enum tc_setup_type type, void *type_data); 1086 1087 /* 1088 * Cross-chip operations 1089 */ 1090 int (*crosschip_bridge_join)(struct dsa_switch *ds, int tree_index, 1091 int sw_index, int port, 1092 struct dsa_bridge bridge, 1093 struct netlink_ext_ack *extack); 1094 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, 1095 int sw_index, int port, 1096 struct dsa_bridge bridge); 1097 int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, 1098 int port); 1099 int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, 1100 int port, struct dsa_lag lag, 1101 struct netdev_lag_upper_info *info, 1102 struct netlink_ext_ack *extack); 1103 int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, 1104 int port, struct dsa_lag lag); 1105 1106 /* 1107 * PTP functionality 1108 */ 1109 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 1110 struct ifreq *ifr); 1111 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 1112 struct ifreq *ifr); 1113 void (*port_txtstamp)(struct dsa_switch *ds, int port, 1114 struct sk_buff *skb); 1115 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 1116 struct sk_buff *skb, unsigned int type); 1117 1118 /* Devlink parameters, etc */ 1119 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 1120 struct devlink_param_gset_ctx *ctx); 1121 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 1122 struct devlink_param_gset_ctx *ctx); 1123 int (*devlink_info_get)(struct dsa_switch *ds, 1124 struct devlink_info_req *req, 1125 struct netlink_ext_ack *extack); 1126 int (*devlink_sb_pool_get)(struct dsa_switch *ds, 1127 unsigned int sb_index, u16 pool_index, 1128 struct devlink_sb_pool_info *pool_info); 1129 int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, 1130 u16 pool_index, u32 size, 1131 enum devlink_sb_threshold_type threshold_type, 1132 struct netlink_ext_ack *extack); 1133 int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, 1134 unsigned int sb_index, u16 pool_index, 1135 u32 *p_threshold); 1136 int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, 1137 unsigned int sb_index, u16 pool_index, 1138 u32 threshold, 1139 struct netlink_ext_ack *extack); 1140 int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, 1141 unsigned int sb_index, u16 tc_index, 1142 enum devlink_sb_pool_type pool_type, 1143 u16 *p_pool_index, u32 *p_threshold); 1144 int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, 1145 unsigned int sb_index, u16 tc_index, 1146 enum devlink_sb_pool_type pool_type, 1147 u16 pool_index, u32 threshold, 1148 struct netlink_ext_ack *extack); 1149 int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, 1150 unsigned int sb_index); 1151 int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, 1152 unsigned int sb_index); 1153 int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, 1154 unsigned int sb_index, u16 pool_index, 1155 u32 *p_cur, u32 *p_max); 1156 int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, 1157 unsigned int sb_index, u16 tc_index, 1158 enum devlink_sb_pool_type pool_type, 1159 u32 *p_cur, u32 *p_max); 1160 1161 /* 1162 * MTU change functionality. Switches can also adjust their MRU through 1163 * this method. By MTU, one understands the SDU (L2 payload) length. 1164 * If the switch needs to account for the DSA tag on the CPU port, this 1165 * method needs to do so privately. 1166 */ 1167 int (*port_change_mtu)(struct dsa_switch *ds, int port, 1168 int new_mtu); 1169 int (*port_max_mtu)(struct dsa_switch *ds, int port); 1170 1171 /* 1172 * LAG integration 1173 */ 1174 int (*port_lag_change)(struct dsa_switch *ds, int port); 1175 int (*port_lag_join)(struct dsa_switch *ds, int port, 1176 struct dsa_lag lag, 1177 struct netdev_lag_upper_info *info, 1178 struct netlink_ext_ack *extack); 1179 int (*port_lag_leave)(struct dsa_switch *ds, int port, 1180 struct dsa_lag lag); 1181 1182 /* 1183 * HSR integration 1184 */ 1185 int (*port_hsr_join)(struct dsa_switch *ds, int port, 1186 struct net_device *hsr); 1187 int (*port_hsr_leave)(struct dsa_switch *ds, int port, 1188 struct net_device *hsr); 1189 1190 /* 1191 * MRP integration 1192 */ 1193 int (*port_mrp_add)(struct dsa_switch *ds, int port, 1194 const struct switchdev_obj_mrp *mrp); 1195 int (*port_mrp_del)(struct dsa_switch *ds, int port, 1196 const struct switchdev_obj_mrp *mrp); 1197 int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, 1198 const struct switchdev_obj_ring_role_mrp *mrp); 1199 int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, 1200 const struct switchdev_obj_ring_role_mrp *mrp); 1201 1202 /* 1203 * tag_8021q operations 1204 */ 1205 int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, 1206 u16 flags); 1207 int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid); 1208 1209 /* 1210 * DSA master tracking operations 1211 */ 1212 void (*master_state_change)(struct dsa_switch *ds, 1213 const struct net_device *master, 1214 bool operational); 1215 }; 1216 1217 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 1218 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 1219 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 1220 1221 int dsa_devlink_param_get(struct devlink *dl, u32 id, 1222 struct devlink_param_gset_ctx *ctx); 1223 int dsa_devlink_param_set(struct devlink *dl, u32 id, 1224 struct devlink_param_gset_ctx *ctx); 1225 int dsa_devlink_params_register(struct dsa_switch *ds, 1226 const struct devlink_param *params, 1227 size_t params_count); 1228 void dsa_devlink_params_unregister(struct dsa_switch *ds, 1229 const struct devlink_param *params, 1230 size_t params_count); 1231 int dsa_devlink_resource_register(struct dsa_switch *ds, 1232 const char *resource_name, 1233 u64 resource_size, 1234 u64 resource_id, 1235 u64 parent_resource_id, 1236 const struct devlink_resource_size_params *size_params); 1237 1238 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 1239 1240 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 1241 u64 resource_id, 1242 devlink_resource_occ_get_t *occ_get, 1243 void *occ_get_priv); 1244 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 1245 u64 resource_id); 1246 struct devlink_region * 1247 dsa_devlink_region_create(struct dsa_switch *ds, 1248 const struct devlink_region_ops *ops, 1249 u32 region_max_snapshots, u64 region_size); 1250 struct devlink_region * 1251 dsa_devlink_port_region_create(struct dsa_switch *ds, 1252 int port, 1253 const struct devlink_port_region_ops *ops, 1254 u32 region_max_snapshots, u64 region_size); 1255 void dsa_devlink_region_destroy(struct devlink_region *region); 1256 1257 struct dsa_port *dsa_port_from_netdev(struct net_device *netdev); 1258 1259 struct dsa_devlink_priv { 1260 struct dsa_switch *ds; 1261 }; 1262 1263 static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl) 1264 { 1265 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1266 1267 return dl_priv->ds; 1268 } 1269 1270 static inline 1271 struct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port) 1272 { 1273 struct devlink *dl = port->devlink; 1274 struct dsa_devlink_priv *dl_priv = devlink_priv(dl); 1275 1276 return dl_priv->ds; 1277 } 1278 1279 static inline int dsa_devlink_port_to_port(struct devlink_port *port) 1280 { 1281 return port->index; 1282 } 1283 1284 struct dsa_switch_driver { 1285 struct list_head list; 1286 const struct dsa_switch_ops *ops; 1287 }; 1288 1289 bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, 1290 const unsigned char *addr, u16 vid, 1291 struct dsa_db db); 1292 bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, 1293 const struct switchdev_obj_port_mdb *mdb, 1294 struct dsa_db db); 1295 1296 /* Keep inline for faster access in hot path */ 1297 static inline bool netdev_uses_dsa(const struct net_device *dev) 1298 { 1299 #if IS_ENABLED(CONFIG_NET_DSA) 1300 return dev->dsa_ptr && dev->dsa_ptr->rcv; 1301 #endif 1302 return false; 1303 } 1304 1305 /* All DSA tags that push the EtherType to the right (basically all except tail 1306 * tags, which don't break dissection) can be treated the same from the 1307 * perspective of the flow dissector. 1308 * 1309 * We need to return: 1310 * - offset: the (B - A) difference between: 1311 * A. the position of the real EtherType and 1312 * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes 1313 * after the normal EtherType was supposed to be) 1314 * The offset in bytes is exactly equal to the tagger overhead (and half of 1315 * that, in __be16 shorts). 1316 * 1317 * - proto: the value of the real EtherType. 1318 */ 1319 static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, 1320 __be16 *proto, int *offset) 1321 { 1322 #if IS_ENABLED(CONFIG_NET_DSA) 1323 const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; 1324 int tag_len = ops->needed_headroom; 1325 1326 *offset = tag_len; 1327 *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1]; 1328 #endif 1329 } 1330 1331 #if IS_ENABLED(CONFIG_NET_DSA) 1332 static inline int __dsa_netdevice_ops_check(struct net_device *dev) 1333 { 1334 int err = -EOPNOTSUPP; 1335 1336 if (!dev->dsa_ptr) 1337 return err; 1338 1339 if (!dev->dsa_ptr->netdev_ops) 1340 return err; 1341 1342 return 0; 1343 } 1344 1345 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr, 1346 int cmd) 1347 { 1348 const struct dsa_netdevice_ops *ops; 1349 int err; 1350 1351 err = __dsa_netdevice_ops_check(dev); 1352 if (err) 1353 return err; 1354 1355 ops = dev->dsa_ptr->netdev_ops; 1356 1357 return ops->ndo_eth_ioctl(dev, ifr, cmd); 1358 } 1359 #else 1360 static inline int dsa_ndo_eth_ioctl(struct net_device *dev, struct ifreq *ifr, 1361 int cmd) 1362 { 1363 return -EOPNOTSUPP; 1364 } 1365 #endif 1366 1367 void dsa_unregister_switch(struct dsa_switch *ds); 1368 int dsa_register_switch(struct dsa_switch *ds); 1369 void dsa_switch_shutdown(struct dsa_switch *ds); 1370 struct dsa_switch *dsa_switch_find(int tree_index, int sw_index); 1371 void dsa_flush_workqueue(void); 1372 #ifdef CONFIG_PM_SLEEP 1373 int dsa_switch_suspend(struct dsa_switch *ds); 1374 int dsa_switch_resume(struct dsa_switch *ds); 1375 #else 1376 static inline int dsa_switch_suspend(struct dsa_switch *ds) 1377 { 1378 return 0; 1379 } 1380 static inline int dsa_switch_resume(struct dsa_switch *ds) 1381 { 1382 return 0; 1383 } 1384 #endif /* CONFIG_PM_SLEEP */ 1385 1386 #if IS_ENABLED(CONFIG_NET_DSA) 1387 bool dsa_slave_dev_check(const struct net_device *dev); 1388 #else 1389 static inline bool dsa_slave_dev_check(const struct net_device *dev) 1390 { 1391 return false; 1392 } 1393 #endif 1394 1395 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 1396 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 1397 1398 #endif 1399