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