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