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 48 enum dsa_tag_protocol { 49 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 50 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 51 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 52 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 53 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 54 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 55 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 56 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 57 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 58 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 59 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 60 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 61 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 62 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 63 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 64 DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, 65 DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, 66 }; 67 68 struct packet_type; 69 struct dsa_switch; 70 71 struct dsa_device_ops { 72 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 73 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, 74 struct packet_type *pt); 75 int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 76 int *offset); 77 /* Used to determine which traffic should match the DSA filter in 78 * eth_type_trans, and which, if any, should bypass it and be processed 79 * as regular on the master net device. 80 */ 81 bool (*filter)(const struct sk_buff *skb, struct net_device *dev); 82 unsigned int overhead; 83 const char *name; 84 enum dsa_tag_protocol proto; 85 }; 86 87 #define DSA_TAG_DRIVER_ALIAS "dsa_tag-" 88 #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \ 89 MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE)) 90 91 struct dsa_skb_cb { 92 struct sk_buff *clone; 93 }; 94 95 struct __dsa_skb_cb { 96 struct dsa_skb_cb cb; 97 u8 priv[48 - sizeof(struct dsa_skb_cb)]; 98 }; 99 100 #define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb)) 101 102 #define DSA_SKB_CB_PRIV(skb) \ 103 ((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv)) 104 105 struct dsa_switch_tree { 106 struct list_head list; 107 108 /* Notifier chain for switch-wide events */ 109 struct raw_notifier_head nh; 110 111 /* Tree identifier */ 112 unsigned int index; 113 114 /* Number of switches attached to this tree */ 115 struct kref refcount; 116 117 /* Has this tree been applied to the hardware? */ 118 bool setup; 119 120 /* 121 * Configuration data for the platform device that owns 122 * this dsa switch tree instance. 123 */ 124 struct dsa_platform_data *pd; 125 126 /* List of switch ports */ 127 struct list_head ports; 128 129 /* List of DSA links composing the routing table */ 130 struct list_head rtable; 131 }; 132 133 /* TC matchall action types, only mirroring for now */ 134 enum dsa_port_mall_action_type { 135 DSA_PORT_MALL_MIRROR, 136 }; 137 138 /* TC mirroring entry */ 139 struct dsa_mall_mirror_tc_entry { 140 u8 to_local_port; 141 bool ingress; 142 }; 143 144 /* TC matchall entry */ 145 struct dsa_mall_tc_entry { 146 struct list_head list; 147 unsigned long cookie; 148 enum dsa_port_mall_action_type type; 149 union { 150 struct dsa_mall_mirror_tc_entry mirror; 151 }; 152 }; 153 154 155 struct dsa_port { 156 /* A CPU port is physically connected to a master device. 157 * A user port exposed to userspace has a slave device. 158 */ 159 union { 160 struct net_device *master; 161 struct net_device *slave; 162 }; 163 164 /* CPU port tagging operations used by master or slave devices */ 165 const struct dsa_device_ops *tag_ops; 166 167 /* Copies for faster access in master receive hot path */ 168 struct dsa_switch_tree *dst; 169 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, 170 struct packet_type *pt); 171 bool (*filter)(const struct sk_buff *skb, struct net_device *dev); 172 173 enum { 174 DSA_PORT_TYPE_UNUSED = 0, 175 DSA_PORT_TYPE_CPU, 176 DSA_PORT_TYPE_DSA, 177 DSA_PORT_TYPE_USER, 178 } type; 179 180 struct dsa_switch *ds; 181 unsigned int index; 182 const char *name; 183 struct dsa_port *cpu_dp; 184 const char *mac; 185 struct device_node *dn; 186 unsigned int ageing_time; 187 bool vlan_filtering; 188 u8 stp_state; 189 struct net_device *bridge_dev; 190 struct devlink_port devlink_port; 191 struct phylink *pl; 192 struct phylink_config pl_config; 193 194 struct list_head list; 195 196 /* 197 * Give the switch driver somewhere to hang its per-port private data 198 * structures (accessible from the tagger). 199 */ 200 void *priv; 201 202 /* 203 * Original copy of the master netdev ethtool_ops 204 */ 205 const struct ethtool_ops *orig_ethtool_ops; 206 207 /* 208 * Original copy of the master netdev net_device_ops 209 */ 210 const struct net_device_ops *orig_ndo_ops; 211 212 bool setup; 213 }; 214 215 /* TODO: ideally DSA ports would have a single dp->link_dp member, 216 * and no dst->rtable nor this struct dsa_link would be needed, 217 * but this would require some more complex tree walking, 218 * so keep it stupid at the moment and list them all. 219 */ 220 struct dsa_link { 221 struct dsa_port *dp; 222 struct dsa_port *link_dp; 223 struct list_head list; 224 }; 225 226 struct dsa_switch { 227 bool setup; 228 229 struct device *dev; 230 231 /* 232 * Parent switch tree, and switch index. 233 */ 234 struct dsa_switch_tree *dst; 235 unsigned int index; 236 237 /* Listener for switch fabric events */ 238 struct notifier_block nb; 239 240 /* 241 * Give the switch driver somewhere to hang its private data 242 * structure. 243 */ 244 void *priv; 245 246 /* 247 * Configuration data for this switch. 248 */ 249 struct dsa_chip_data *cd; 250 251 /* 252 * The switch operations. 253 */ 254 const struct dsa_switch_ops *ops; 255 256 /* 257 * Slave mii_bus and devices for the individual ports. 258 */ 259 u32 phys_mii_mask; 260 struct mii_bus *slave_mii_bus; 261 262 /* Ageing Time limits in msecs */ 263 unsigned int ageing_time_min; 264 unsigned int ageing_time_max; 265 266 /* devlink used to represent this switch device */ 267 struct devlink *devlink; 268 269 /* Number of switch port queues */ 270 unsigned int num_tx_queues; 271 272 /* Disallow bridge core from requesting different VLAN awareness 273 * settings on ports if not hardware-supported 274 */ 275 bool vlan_filtering_is_global; 276 277 /* In case vlan_filtering_is_global is set, the VLAN awareness state 278 * should be retrieved from here and not from the per-port settings. 279 */ 280 bool vlan_filtering; 281 282 /* MAC PCS does not provide link state change interrupt, and requires 283 * polling. Flag passed on to PHYLINK. 284 */ 285 bool pcs_poll; 286 287 size_t num_ports; 288 }; 289 290 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 291 { 292 struct dsa_switch_tree *dst = ds->dst; 293 struct dsa_port *dp; 294 295 list_for_each_entry(dp, &dst->ports, list) 296 if (dp->ds == ds && dp->index == p) 297 return dp; 298 299 return NULL; 300 } 301 302 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 303 { 304 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 305 } 306 307 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 308 { 309 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 310 } 311 312 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 313 { 314 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 315 } 316 317 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 318 { 319 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 320 } 321 322 static inline u32 dsa_user_ports(struct dsa_switch *ds) 323 { 324 u32 mask = 0; 325 int p; 326 327 for (p = 0; p < ds->num_ports; p++) 328 if (dsa_is_user_port(ds, p)) 329 mask |= BIT(p); 330 331 return mask; 332 } 333 334 /* Return the local port used to reach an arbitrary switch device */ 335 static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) 336 { 337 struct dsa_switch_tree *dst = ds->dst; 338 struct dsa_link *dl; 339 340 list_for_each_entry(dl, &dst->rtable, list) 341 if (dl->dp->ds == ds && dl->link_dp->ds->index == device) 342 return dl->dp->index; 343 344 return ds->num_ports; 345 } 346 347 /* Return the local port used to reach an arbitrary switch port */ 348 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 349 int port) 350 { 351 if (device == ds->index) 352 return port; 353 else 354 return dsa_routing_port(ds, device); 355 } 356 357 /* Return the local port used to reach the dedicated CPU port */ 358 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 359 { 360 const struct dsa_port *dp = dsa_to_port(ds, port); 361 const struct dsa_port *cpu_dp = dp->cpu_dp; 362 363 if (!cpu_dp) 364 return port; 365 366 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 367 } 368 369 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 370 { 371 const struct dsa_switch *ds = dp->ds; 372 373 if (ds->vlan_filtering_is_global) 374 return ds->vlan_filtering; 375 else 376 return dp->vlan_filtering; 377 } 378 379 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 380 bool is_static, void *data); 381 struct dsa_switch_ops { 382 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 383 int port, 384 enum dsa_tag_protocol mprot); 385 386 int (*setup)(struct dsa_switch *ds); 387 void (*teardown)(struct dsa_switch *ds); 388 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 389 390 /* 391 * Access to the switch's PHY registers. 392 */ 393 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 394 int (*phy_write)(struct dsa_switch *ds, int port, 395 int regnum, u16 val); 396 397 /* 398 * Link state adjustment (called from libphy) 399 */ 400 void (*adjust_link)(struct dsa_switch *ds, int port, 401 struct phy_device *phydev); 402 void (*fixed_link_update)(struct dsa_switch *ds, int port, 403 struct fixed_phy_status *st); 404 405 /* 406 * PHYLINK integration 407 */ 408 void (*phylink_validate)(struct dsa_switch *ds, int port, 409 unsigned long *supported, 410 struct phylink_link_state *state); 411 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, 412 struct phylink_link_state *state); 413 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 414 unsigned int mode, 415 const struct phylink_link_state *state); 416 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); 417 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 418 unsigned int mode, 419 phy_interface_t interface); 420 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 421 unsigned int mode, 422 phy_interface_t interface, 423 struct phy_device *phydev, 424 int speed, int duplex, 425 bool tx_pause, bool rx_pause); 426 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 427 struct phylink_link_state *state); 428 /* 429 * ethtool hardware statistics. 430 */ 431 void (*get_strings)(struct dsa_switch *ds, int port, 432 u32 stringset, uint8_t *data); 433 void (*get_ethtool_stats)(struct dsa_switch *ds, 434 int port, uint64_t *data); 435 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 436 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 437 int port, uint64_t *data); 438 439 /* 440 * ethtool Wake-on-LAN 441 */ 442 void (*get_wol)(struct dsa_switch *ds, int port, 443 struct ethtool_wolinfo *w); 444 int (*set_wol)(struct dsa_switch *ds, int port, 445 struct ethtool_wolinfo *w); 446 447 /* 448 * ethtool timestamp info 449 */ 450 int (*get_ts_info)(struct dsa_switch *ds, int port, 451 struct ethtool_ts_info *ts); 452 453 /* 454 * Suspend and resume 455 */ 456 int (*suspend)(struct dsa_switch *ds); 457 int (*resume)(struct dsa_switch *ds); 458 459 /* 460 * Port enable/disable 461 */ 462 int (*port_enable)(struct dsa_switch *ds, int port, 463 struct phy_device *phy); 464 void (*port_disable)(struct dsa_switch *ds, int port); 465 466 /* 467 * Port's MAC EEE settings 468 */ 469 int (*set_mac_eee)(struct dsa_switch *ds, int port, 470 struct ethtool_eee *e); 471 int (*get_mac_eee)(struct dsa_switch *ds, int port, 472 struct ethtool_eee *e); 473 474 /* EEPROM access */ 475 int (*get_eeprom_len)(struct dsa_switch *ds); 476 int (*get_eeprom)(struct dsa_switch *ds, 477 struct ethtool_eeprom *eeprom, u8 *data); 478 int (*set_eeprom)(struct dsa_switch *ds, 479 struct ethtool_eeprom *eeprom, u8 *data); 480 481 /* 482 * Register access. 483 */ 484 int (*get_regs_len)(struct dsa_switch *ds, int port); 485 void (*get_regs)(struct dsa_switch *ds, int port, 486 struct ethtool_regs *regs, void *p); 487 488 /* 489 * Bridge integration 490 */ 491 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 492 int (*port_bridge_join)(struct dsa_switch *ds, int port, 493 struct net_device *bridge); 494 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 495 struct net_device *bridge); 496 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 497 u8 state); 498 void (*port_fast_age)(struct dsa_switch *ds, int port); 499 int (*port_egress_floods)(struct dsa_switch *ds, int port, 500 bool unicast, bool multicast); 501 502 /* 503 * VLAN support 504 */ 505 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 506 bool vlan_filtering); 507 int (*port_vlan_prepare)(struct dsa_switch *ds, int port, 508 const struct switchdev_obj_port_vlan *vlan); 509 void (*port_vlan_add)(struct dsa_switch *ds, int port, 510 const struct switchdev_obj_port_vlan *vlan); 511 int (*port_vlan_del)(struct dsa_switch *ds, int port, 512 const struct switchdev_obj_port_vlan *vlan); 513 /* 514 * Forwarding database 515 */ 516 int (*port_fdb_add)(struct dsa_switch *ds, int port, 517 const unsigned char *addr, u16 vid); 518 int (*port_fdb_del)(struct dsa_switch *ds, int port, 519 const unsigned char *addr, u16 vid); 520 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 521 dsa_fdb_dump_cb_t *cb, void *data); 522 523 /* 524 * Multicast database 525 */ 526 int (*port_mdb_prepare)(struct dsa_switch *ds, int port, 527 const struct switchdev_obj_port_mdb *mdb); 528 void (*port_mdb_add)(struct dsa_switch *ds, int port, 529 const struct switchdev_obj_port_mdb *mdb); 530 int (*port_mdb_del)(struct dsa_switch *ds, int port, 531 const struct switchdev_obj_port_mdb *mdb); 532 /* 533 * RXNFC 534 */ 535 int (*get_rxnfc)(struct dsa_switch *ds, int port, 536 struct ethtool_rxnfc *nfc, u32 *rule_locs); 537 int (*set_rxnfc)(struct dsa_switch *ds, int port, 538 struct ethtool_rxnfc *nfc); 539 540 /* 541 * TC integration 542 */ 543 int (*cls_flower_add)(struct dsa_switch *ds, int port, 544 struct flow_cls_offload *cls, bool ingress); 545 int (*cls_flower_del)(struct dsa_switch *ds, int port, 546 struct flow_cls_offload *cls, bool ingress); 547 int (*cls_flower_stats)(struct dsa_switch *ds, int port, 548 struct flow_cls_offload *cls, bool ingress); 549 int (*port_mirror_add)(struct dsa_switch *ds, int port, 550 struct dsa_mall_mirror_tc_entry *mirror, 551 bool ingress); 552 void (*port_mirror_del)(struct dsa_switch *ds, int port, 553 struct dsa_mall_mirror_tc_entry *mirror); 554 int (*port_setup_tc)(struct dsa_switch *ds, int port, 555 enum tc_setup_type type, void *type_data); 556 557 /* 558 * Cross-chip operations 559 */ 560 int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index, 561 int port, struct net_device *br); 562 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index, 563 int port, struct net_device *br); 564 565 /* 566 * PTP functionality 567 */ 568 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 569 struct ifreq *ifr); 570 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 571 struct ifreq *ifr); 572 bool (*port_txtstamp)(struct dsa_switch *ds, int port, 573 struct sk_buff *clone, unsigned int type); 574 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 575 struct sk_buff *skb, unsigned int type); 576 577 /* Devlink parameters */ 578 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 579 struct devlink_param_gset_ctx *ctx); 580 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 581 struct devlink_param_gset_ctx *ctx); 582 }; 583 584 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 585 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 586 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 587 588 int dsa_devlink_param_get(struct devlink *dl, u32 id, 589 struct devlink_param_gset_ctx *ctx); 590 int dsa_devlink_param_set(struct devlink *dl, u32 id, 591 struct devlink_param_gset_ctx *ctx); 592 int dsa_devlink_params_register(struct dsa_switch *ds, 593 const struct devlink_param *params, 594 size_t params_count); 595 void dsa_devlink_params_unregister(struct dsa_switch *ds, 596 const struct devlink_param *params, 597 size_t params_count); 598 int dsa_devlink_resource_register(struct dsa_switch *ds, 599 const char *resource_name, 600 u64 resource_size, 601 u64 resource_id, 602 u64 parent_resource_id, 603 const struct devlink_resource_size_params *size_params); 604 605 void dsa_devlink_resources_unregister(struct dsa_switch *ds); 606 607 void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, 608 u64 resource_id, 609 devlink_resource_occ_get_t *occ_get, 610 void *occ_get_priv); 611 void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, 612 u64 resource_id); 613 614 struct dsa_devlink_priv { 615 struct dsa_switch *ds; 616 }; 617 618 struct dsa_switch_driver { 619 struct list_head list; 620 const struct dsa_switch_ops *ops; 621 }; 622 623 struct net_device *dsa_dev_to_net_device(struct device *dev); 624 625 /* Keep inline for faster access in hot path */ 626 static inline bool netdev_uses_dsa(struct net_device *dev) 627 { 628 #if IS_ENABLED(CONFIG_NET_DSA) 629 return dev->dsa_ptr && dev->dsa_ptr->rcv; 630 #endif 631 return false; 632 } 633 634 static inline bool dsa_can_decode(const struct sk_buff *skb, 635 struct net_device *dev) 636 { 637 #if IS_ENABLED(CONFIG_NET_DSA) 638 return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev); 639 #endif 640 return false; 641 } 642 643 void dsa_unregister_switch(struct dsa_switch *ds); 644 int dsa_register_switch(struct dsa_switch *ds); 645 #ifdef CONFIG_PM_SLEEP 646 int dsa_switch_suspend(struct dsa_switch *ds); 647 int dsa_switch_resume(struct dsa_switch *ds); 648 #else 649 static inline int dsa_switch_suspend(struct dsa_switch *ds) 650 { 651 return 0; 652 } 653 static inline int dsa_switch_resume(struct dsa_switch *ds) 654 { 655 return 0; 656 } 657 #endif /* CONFIG_PM_SLEEP */ 658 659 enum dsa_notifier_type { 660 DSA_PORT_REGISTER, 661 DSA_PORT_UNREGISTER, 662 }; 663 664 struct dsa_notifier_info { 665 struct net_device *dev; 666 }; 667 668 struct dsa_notifier_register_info { 669 struct dsa_notifier_info info; /* must be first */ 670 struct net_device *master; 671 unsigned int port_number; 672 unsigned int switch_number; 673 }; 674 675 static inline struct net_device * 676 dsa_notifier_info_to_dev(const struct dsa_notifier_info *info) 677 { 678 return info->dev; 679 } 680 681 #if IS_ENABLED(CONFIG_NET_DSA) 682 int register_dsa_notifier(struct notifier_block *nb); 683 int unregister_dsa_notifier(struct notifier_block *nb); 684 int call_dsa_notifiers(unsigned long val, struct net_device *dev, 685 struct dsa_notifier_info *info); 686 #else 687 static inline int register_dsa_notifier(struct notifier_block *nb) 688 { 689 return 0; 690 } 691 692 static inline int unregister_dsa_notifier(struct notifier_block *nb) 693 { 694 return 0; 695 } 696 697 static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev, 698 struct dsa_notifier_info *info) 699 { 700 return NOTIFY_DONE; 701 } 702 #endif 703 704 /* Broadcom tag specific helpers to insert and extract queue/port number */ 705 #define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q) 706 #define BRCM_TAG_GET_PORT(v) ((v) >> 8) 707 #define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff) 708 709 710 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 711 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data); 712 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data); 713 int dsa_port_get_phy_sset_count(struct dsa_port *dp); 714 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 715 716 struct dsa_tag_driver { 717 const struct dsa_device_ops *ops; 718 struct list_head list; 719 struct module *owner; 720 }; 721 722 void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], 723 unsigned int count, 724 struct module *owner); 725 void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], 726 unsigned int count); 727 728 #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ 729 static int __init dsa_tag_driver_module_init(void) \ 730 { \ 731 dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ 732 THIS_MODULE); \ 733 return 0; \ 734 } \ 735 module_init(dsa_tag_driver_module_init); \ 736 \ 737 static void __exit dsa_tag_driver_module_exit(void) \ 738 { \ 739 dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ 740 } \ 741 module_exit(dsa_tag_driver_module_exit) 742 743 /** 744 * module_dsa_tag_drivers() - Helper macro for registering DSA tag 745 * drivers 746 * @__ops_array: Array of tag driver strucutres 747 * 748 * Helper macro for DSA tag drivers which do not do anything special 749 * in module init/exit. Each module may only use this macro once, and 750 * calling it replaces module_init() and module_exit(). 751 */ 752 #define module_dsa_tag_drivers(__ops_array) \ 753 dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) 754 755 #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops 756 757 /* Create a static structure we can build a linked list of dsa_tag 758 * drivers 759 */ 760 #define DSA_TAG_DRIVER(__ops) \ 761 static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ 762 .ops = &__ops, \ 763 } 764 765 /** 766 * module_dsa_tag_driver() - Helper macro for registering a single DSA tag 767 * driver 768 * @__ops: Single tag driver structures 769 * 770 * Helper macro for DSA tag drivers which do not do anything special 771 * in module init/exit. Each module may only use this macro once, and 772 * calling it replaces module_init() and module_exit(). 773 */ 774 #define module_dsa_tag_driver(__ops) \ 775 DSA_TAG_DRIVER(__ops); \ 776 \ 777 static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ 778 &DSA_TAG_DRIVER_NAME(__ops) \ 779 }; \ 780 module_dsa_tag_drivers(dsa_tag_driver_array) 781 #endif 782 783