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 46 enum dsa_tag_protocol { 47 DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, 48 DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, 49 DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, 50 DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, 51 DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, 52 DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, 53 DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, 54 DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, 55 DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, 56 DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, 57 DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, 58 DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, 59 DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, 60 DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, 61 DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, 62 }; 63 64 struct packet_type; 65 struct dsa_switch; 66 67 struct dsa_device_ops { 68 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); 69 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, 70 struct packet_type *pt); 71 int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, 72 int *offset); 73 /* Used to determine which traffic should match the DSA filter in 74 * eth_type_trans, and which, if any, should bypass it and be processed 75 * as regular on the master net device. 76 */ 77 bool (*filter)(const struct sk_buff *skb, struct net_device *dev); 78 unsigned int overhead; 79 const char *name; 80 enum dsa_tag_protocol proto; 81 }; 82 83 #define DSA_TAG_DRIVER_ALIAS "dsa_tag-" 84 #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \ 85 MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE)) 86 87 struct dsa_skb_cb { 88 struct sk_buff *clone; 89 bool deferred_xmit; 90 }; 91 92 struct __dsa_skb_cb { 93 struct dsa_skb_cb cb; 94 u8 priv[48 - sizeof(struct dsa_skb_cb)]; 95 }; 96 97 #define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb)) 98 99 #define DSA_SKB_CB_PRIV(skb) \ 100 ((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv)) 101 102 struct dsa_switch_tree { 103 struct list_head list; 104 105 /* Notifier chain for switch-wide events */ 106 struct raw_notifier_head nh; 107 108 /* Tree identifier */ 109 unsigned int index; 110 111 /* Number of switches attached to this tree */ 112 struct kref refcount; 113 114 /* Has this tree been applied to the hardware? */ 115 bool setup; 116 117 /* 118 * Configuration data for the platform device that owns 119 * this dsa switch tree instance. 120 */ 121 struct dsa_platform_data *pd; 122 123 /* List of switch ports */ 124 struct list_head ports; 125 126 /* 127 * Data for the individual switch chips. 128 */ 129 struct dsa_switch *ds[DSA_MAX_SWITCHES]; 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 struct dsa_switch { 218 bool setup; 219 220 struct device *dev; 221 222 /* 223 * Parent switch tree, and switch index. 224 */ 225 struct dsa_switch_tree *dst; 226 unsigned int index; 227 228 /* Listener for switch fabric events */ 229 struct notifier_block nb; 230 231 /* 232 * Give the switch driver somewhere to hang its private data 233 * structure. 234 */ 235 void *priv; 236 237 /* 238 * Configuration data for this switch. 239 */ 240 struct dsa_chip_data *cd; 241 242 /* 243 * The switch operations. 244 */ 245 const struct dsa_switch_ops *ops; 246 247 /* 248 * An array of which element [a] indicates which port on this 249 * switch should be used to send packets to that are destined 250 * for switch a. Can be NULL if there is only one switch chip. 251 */ 252 s8 rtable[DSA_MAX_SWITCHES]; 253 254 /* 255 * Slave mii_bus and devices for the individual ports. 256 */ 257 u32 phys_mii_mask; 258 struct mii_bus *slave_mii_bus; 259 260 /* Ageing Time limits in msecs */ 261 unsigned int ageing_time_min; 262 unsigned int ageing_time_max; 263 264 /* devlink used to represent this switch device */ 265 struct devlink *devlink; 266 267 /* Number of switch port queues */ 268 unsigned int num_tx_queues; 269 270 /* Disallow bridge core from requesting different VLAN awareness 271 * settings on ports if not hardware-supported 272 */ 273 bool vlan_filtering_is_global; 274 275 /* In case vlan_filtering_is_global is set, the VLAN awareness state 276 * should be retrieved from here and not from the per-port settings. 277 */ 278 bool vlan_filtering; 279 280 size_t num_ports; 281 }; 282 283 static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) 284 { 285 struct dsa_switch_tree *dst = ds->dst; 286 struct dsa_port *dp; 287 288 list_for_each_entry(dp, &dst->ports, list) 289 if (dp->ds == ds && dp->index == p) 290 return dp; 291 292 return NULL; 293 } 294 295 static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) 296 { 297 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; 298 } 299 300 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) 301 { 302 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; 303 } 304 305 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) 306 { 307 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; 308 } 309 310 static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) 311 { 312 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; 313 } 314 315 static inline u32 dsa_user_ports(struct dsa_switch *ds) 316 { 317 u32 mask = 0; 318 int p; 319 320 for (p = 0; p < ds->num_ports; p++) 321 if (dsa_is_user_port(ds, p)) 322 mask |= BIT(p); 323 324 return mask; 325 } 326 327 /* Return the local port used to reach an arbitrary switch port */ 328 static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, 329 int port) 330 { 331 if (device == ds->index) 332 return port; 333 else 334 return ds->rtable[device]; 335 } 336 337 /* Return the local port used to reach the dedicated CPU port */ 338 static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) 339 { 340 const struct dsa_port *dp = dsa_to_port(ds, port); 341 const struct dsa_port *cpu_dp = dp->cpu_dp; 342 343 if (!cpu_dp) 344 return port; 345 346 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); 347 } 348 349 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) 350 { 351 const struct dsa_switch *ds = dp->ds; 352 353 if (ds->vlan_filtering_is_global) 354 return ds->vlan_filtering; 355 else 356 return dp->vlan_filtering; 357 } 358 359 typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, 360 bool is_static, void *data); 361 struct dsa_switch_ops { 362 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, 363 int port); 364 365 int (*setup)(struct dsa_switch *ds); 366 void (*teardown)(struct dsa_switch *ds); 367 u32 (*get_phy_flags)(struct dsa_switch *ds, int port); 368 369 /* 370 * Access to the switch's PHY registers. 371 */ 372 int (*phy_read)(struct dsa_switch *ds, int port, int regnum); 373 int (*phy_write)(struct dsa_switch *ds, int port, 374 int regnum, u16 val); 375 376 /* 377 * Link state adjustment (called from libphy) 378 */ 379 void (*adjust_link)(struct dsa_switch *ds, int port, 380 struct phy_device *phydev); 381 void (*fixed_link_update)(struct dsa_switch *ds, int port, 382 struct fixed_phy_status *st); 383 384 /* 385 * PHYLINK integration 386 */ 387 void (*phylink_validate)(struct dsa_switch *ds, int port, 388 unsigned long *supported, 389 struct phylink_link_state *state); 390 int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, 391 struct phylink_link_state *state); 392 void (*phylink_mac_config)(struct dsa_switch *ds, int port, 393 unsigned int mode, 394 const struct phylink_link_state *state); 395 void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); 396 void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, 397 unsigned int mode, 398 phy_interface_t interface); 399 void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, 400 unsigned int mode, 401 phy_interface_t interface, 402 struct phy_device *phydev); 403 void (*phylink_fixed_state)(struct dsa_switch *ds, int port, 404 struct phylink_link_state *state); 405 /* 406 * ethtool hardware statistics. 407 */ 408 void (*get_strings)(struct dsa_switch *ds, int port, 409 u32 stringset, uint8_t *data); 410 void (*get_ethtool_stats)(struct dsa_switch *ds, 411 int port, uint64_t *data); 412 int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); 413 void (*get_ethtool_phy_stats)(struct dsa_switch *ds, 414 int port, uint64_t *data); 415 416 /* 417 * ethtool Wake-on-LAN 418 */ 419 void (*get_wol)(struct dsa_switch *ds, int port, 420 struct ethtool_wolinfo *w); 421 int (*set_wol)(struct dsa_switch *ds, int port, 422 struct ethtool_wolinfo *w); 423 424 /* 425 * ethtool timestamp info 426 */ 427 int (*get_ts_info)(struct dsa_switch *ds, int port, 428 struct ethtool_ts_info *ts); 429 430 /* 431 * Suspend and resume 432 */ 433 int (*suspend)(struct dsa_switch *ds); 434 int (*resume)(struct dsa_switch *ds); 435 436 /* 437 * Port enable/disable 438 */ 439 int (*port_enable)(struct dsa_switch *ds, int port, 440 struct phy_device *phy); 441 void (*port_disable)(struct dsa_switch *ds, int port); 442 443 /* 444 * Port's MAC EEE settings 445 */ 446 int (*set_mac_eee)(struct dsa_switch *ds, int port, 447 struct ethtool_eee *e); 448 int (*get_mac_eee)(struct dsa_switch *ds, int port, 449 struct ethtool_eee *e); 450 451 /* EEPROM access */ 452 int (*get_eeprom_len)(struct dsa_switch *ds); 453 int (*get_eeprom)(struct dsa_switch *ds, 454 struct ethtool_eeprom *eeprom, u8 *data); 455 int (*set_eeprom)(struct dsa_switch *ds, 456 struct ethtool_eeprom *eeprom, u8 *data); 457 458 /* 459 * Register access. 460 */ 461 int (*get_regs_len)(struct dsa_switch *ds, int port); 462 void (*get_regs)(struct dsa_switch *ds, int port, 463 struct ethtool_regs *regs, void *p); 464 465 /* 466 * Bridge integration 467 */ 468 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); 469 int (*port_bridge_join)(struct dsa_switch *ds, int port, 470 struct net_device *bridge); 471 void (*port_bridge_leave)(struct dsa_switch *ds, int port, 472 struct net_device *bridge); 473 void (*port_stp_state_set)(struct dsa_switch *ds, int port, 474 u8 state); 475 void (*port_fast_age)(struct dsa_switch *ds, int port); 476 int (*port_egress_floods)(struct dsa_switch *ds, int port, 477 bool unicast, bool multicast); 478 479 /* 480 * VLAN support 481 */ 482 int (*port_vlan_filtering)(struct dsa_switch *ds, int port, 483 bool vlan_filtering); 484 int (*port_vlan_prepare)(struct dsa_switch *ds, int port, 485 const struct switchdev_obj_port_vlan *vlan); 486 void (*port_vlan_add)(struct dsa_switch *ds, int port, 487 const struct switchdev_obj_port_vlan *vlan); 488 int (*port_vlan_del)(struct dsa_switch *ds, int port, 489 const struct switchdev_obj_port_vlan *vlan); 490 /* 491 * Forwarding database 492 */ 493 int (*port_fdb_add)(struct dsa_switch *ds, int port, 494 const unsigned char *addr, u16 vid); 495 int (*port_fdb_del)(struct dsa_switch *ds, int port, 496 const unsigned char *addr, u16 vid); 497 int (*port_fdb_dump)(struct dsa_switch *ds, int port, 498 dsa_fdb_dump_cb_t *cb, void *data); 499 500 /* 501 * Multicast database 502 */ 503 int (*port_mdb_prepare)(struct dsa_switch *ds, int port, 504 const struct switchdev_obj_port_mdb *mdb); 505 void (*port_mdb_add)(struct dsa_switch *ds, int port, 506 const struct switchdev_obj_port_mdb *mdb); 507 int (*port_mdb_del)(struct dsa_switch *ds, int port, 508 const struct switchdev_obj_port_mdb *mdb); 509 /* 510 * RXNFC 511 */ 512 int (*get_rxnfc)(struct dsa_switch *ds, int port, 513 struct ethtool_rxnfc *nfc, u32 *rule_locs); 514 int (*set_rxnfc)(struct dsa_switch *ds, int port, 515 struct ethtool_rxnfc *nfc); 516 517 /* 518 * TC integration 519 */ 520 int (*port_mirror_add)(struct dsa_switch *ds, int port, 521 struct dsa_mall_mirror_tc_entry *mirror, 522 bool ingress); 523 void (*port_mirror_del)(struct dsa_switch *ds, int port, 524 struct dsa_mall_mirror_tc_entry *mirror); 525 int (*port_setup_tc)(struct dsa_switch *ds, int port, 526 enum tc_setup_type type, void *type_data); 527 528 /* 529 * Cross-chip operations 530 */ 531 int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index, 532 int port, struct net_device *br); 533 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index, 534 int port, struct net_device *br); 535 536 /* 537 * PTP functionality 538 */ 539 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, 540 struct ifreq *ifr); 541 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, 542 struct ifreq *ifr); 543 bool (*port_txtstamp)(struct dsa_switch *ds, int port, 544 struct sk_buff *clone, unsigned int type); 545 bool (*port_rxtstamp)(struct dsa_switch *ds, int port, 546 struct sk_buff *skb, unsigned int type); 547 548 /* 549 * Deferred frame Tx 550 */ 551 netdev_tx_t (*port_deferred_xmit)(struct dsa_switch *ds, int port, 552 struct sk_buff *skb); 553 /* Devlink parameters */ 554 int (*devlink_param_get)(struct dsa_switch *ds, u32 id, 555 struct devlink_param_gset_ctx *ctx); 556 int (*devlink_param_set)(struct dsa_switch *ds, u32 id, 557 struct devlink_param_gset_ctx *ctx); 558 }; 559 560 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ 561 DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ 562 dsa_devlink_param_get, dsa_devlink_param_set, NULL) 563 564 int dsa_devlink_param_get(struct devlink *dl, u32 id, 565 struct devlink_param_gset_ctx *ctx); 566 int dsa_devlink_param_set(struct devlink *dl, u32 id, 567 struct devlink_param_gset_ctx *ctx); 568 int dsa_devlink_params_register(struct dsa_switch *ds, 569 const struct devlink_param *params, 570 size_t params_count); 571 void dsa_devlink_params_unregister(struct dsa_switch *ds, 572 const struct devlink_param *params, 573 size_t params_count); 574 struct dsa_devlink_priv { 575 struct dsa_switch *ds; 576 }; 577 578 struct dsa_switch_driver { 579 struct list_head list; 580 const struct dsa_switch_ops *ops; 581 }; 582 583 struct net_device *dsa_dev_to_net_device(struct device *dev); 584 585 /* Keep inline for faster access in hot path */ 586 static inline bool netdev_uses_dsa(struct net_device *dev) 587 { 588 #if IS_ENABLED(CONFIG_NET_DSA) 589 return dev->dsa_ptr && dev->dsa_ptr->rcv; 590 #endif 591 return false; 592 } 593 594 static inline bool dsa_can_decode(const struct sk_buff *skb, 595 struct net_device *dev) 596 { 597 #if IS_ENABLED(CONFIG_NET_DSA) 598 return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev); 599 #endif 600 return false; 601 } 602 603 void dsa_unregister_switch(struct dsa_switch *ds); 604 int dsa_register_switch(struct dsa_switch *ds); 605 #ifdef CONFIG_PM_SLEEP 606 int dsa_switch_suspend(struct dsa_switch *ds); 607 int dsa_switch_resume(struct dsa_switch *ds); 608 #else 609 static inline int dsa_switch_suspend(struct dsa_switch *ds) 610 { 611 return 0; 612 } 613 static inline int dsa_switch_resume(struct dsa_switch *ds) 614 { 615 return 0; 616 } 617 #endif /* CONFIG_PM_SLEEP */ 618 619 enum dsa_notifier_type { 620 DSA_PORT_REGISTER, 621 DSA_PORT_UNREGISTER, 622 }; 623 624 struct dsa_notifier_info { 625 struct net_device *dev; 626 }; 627 628 struct dsa_notifier_register_info { 629 struct dsa_notifier_info info; /* must be first */ 630 struct net_device *master; 631 unsigned int port_number; 632 unsigned int switch_number; 633 }; 634 635 static inline struct net_device * 636 dsa_notifier_info_to_dev(const struct dsa_notifier_info *info) 637 { 638 return info->dev; 639 } 640 641 #if IS_ENABLED(CONFIG_NET_DSA) 642 int register_dsa_notifier(struct notifier_block *nb); 643 int unregister_dsa_notifier(struct notifier_block *nb); 644 int call_dsa_notifiers(unsigned long val, struct net_device *dev, 645 struct dsa_notifier_info *info); 646 #else 647 static inline int register_dsa_notifier(struct notifier_block *nb) 648 { 649 return 0; 650 } 651 652 static inline int unregister_dsa_notifier(struct notifier_block *nb) 653 { 654 return 0; 655 } 656 657 static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev, 658 struct dsa_notifier_info *info) 659 { 660 return NOTIFY_DONE; 661 } 662 #endif 663 664 /* Broadcom tag specific helpers to insert and extract queue/port number */ 665 #define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q) 666 #define BRCM_TAG_GET_PORT(v) ((v) >> 8) 667 #define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff) 668 669 670 netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); 671 int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data); 672 int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data); 673 int dsa_port_get_phy_sset_count(struct dsa_port *dp); 674 void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); 675 676 struct dsa_tag_driver { 677 const struct dsa_device_ops *ops; 678 struct list_head list; 679 struct module *owner; 680 }; 681 682 void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], 683 unsigned int count, 684 struct module *owner); 685 void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], 686 unsigned int count); 687 688 #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ 689 static int __init dsa_tag_driver_module_init(void) \ 690 { \ 691 dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ 692 THIS_MODULE); \ 693 return 0; \ 694 } \ 695 module_init(dsa_tag_driver_module_init); \ 696 \ 697 static void __exit dsa_tag_driver_module_exit(void) \ 698 { \ 699 dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ 700 } \ 701 module_exit(dsa_tag_driver_module_exit) 702 703 /** 704 * module_dsa_tag_drivers() - Helper macro for registering DSA tag 705 * drivers 706 * @__ops_array: Array of tag driver strucutres 707 * 708 * Helper macro for DSA tag drivers which do not do anything special 709 * in module init/exit. Each module may only use this macro once, and 710 * calling it replaces module_init() and module_exit(). 711 */ 712 #define module_dsa_tag_drivers(__ops_array) \ 713 dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) 714 715 #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops 716 717 /* Create a static structure we can build a linked list of dsa_tag 718 * drivers 719 */ 720 #define DSA_TAG_DRIVER(__ops) \ 721 static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ 722 .ops = &__ops, \ 723 } 724 725 /** 726 * module_dsa_tag_driver() - Helper macro for registering a single DSA tag 727 * driver 728 * @__ops: Single tag driver structures 729 * 730 * Helper macro for DSA tag drivers which do not do anything special 731 * in module init/exit. Each module may only use this macro once, and 732 * calling it replaces module_init() and module_exit(). 733 */ 734 #define module_dsa_tag_driver(__ops) \ 735 DSA_TAG_DRIVER(__ops); \ 736 \ 737 static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ 738 &DSA_TAG_DRIVER_NAME(__ops) \ 739 }; \ 740 module_dsa_tag_drivers(dsa_tag_driver_array) 741 #endif 742 743