| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips |
| * Copyright (c) 2008-2009 Marvell Semiconductor |
| */ |
| |
| #ifndef __LINUX_NET_DSA_H |
| #define __LINUX_NET_DSA_H |
| |
| #include <linux/if.h> |
| #include <linux/if_ether.h> |
| #include <linux/list.h> |
| #include <linux/notifier.h> |
| #include <linux/timer.h> |
| #include <linux/workqueue.h> |
| #include <linux/of.h> |
| #include <linux/ethtool.h> |
| #include <linux/net_tstamp.h> |
| #include <linux/phy.h> |
| #include <linux/platform_data/dsa.h> |
| #include <linux/phylink.h> |
| #include <net/devlink.h> |
| #include <net/switchdev.h> |
| |
| struct tc_action; |
| struct phy_device; |
| struct fixed_phy_status; |
| struct phylink_link_state; |
| |
| #define DSA_TAG_PROTO_NONE_VALUE 0 |
| #define DSA_TAG_PROTO_BRCM_VALUE 1 |
| #define DSA_TAG_PROTO_BRCM_PREPEND_VALUE 2 |
| #define DSA_TAG_PROTO_DSA_VALUE 3 |
| #define DSA_TAG_PROTO_EDSA_VALUE 4 |
| #define DSA_TAG_PROTO_GSWIP_VALUE 5 |
| #define DSA_TAG_PROTO_KSZ9477_VALUE 6 |
| #define DSA_TAG_PROTO_KSZ9893_VALUE 7 |
| #define DSA_TAG_PROTO_LAN9303_VALUE 8 |
| #define DSA_TAG_PROTO_MTK_VALUE 9 |
| #define DSA_TAG_PROTO_QCA_VALUE 10 |
| #define DSA_TAG_PROTO_TRAILER_VALUE 11 |
| #define DSA_TAG_PROTO_8021Q_VALUE 12 |
| #define DSA_TAG_PROTO_SJA1105_VALUE 13 |
| #define DSA_TAG_PROTO_KSZ8795_VALUE 14 |
| |
| enum dsa_tag_protocol { |
| DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE, |
| DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE, |
| DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE, |
| DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE, |
| DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE, |
| DSA_TAG_PROTO_GSWIP = DSA_TAG_PROTO_GSWIP_VALUE, |
| DSA_TAG_PROTO_KSZ9477 = DSA_TAG_PROTO_KSZ9477_VALUE, |
| DSA_TAG_PROTO_KSZ9893 = DSA_TAG_PROTO_KSZ9893_VALUE, |
| DSA_TAG_PROTO_LAN9303 = DSA_TAG_PROTO_LAN9303_VALUE, |
| DSA_TAG_PROTO_MTK = DSA_TAG_PROTO_MTK_VALUE, |
| DSA_TAG_PROTO_QCA = DSA_TAG_PROTO_QCA_VALUE, |
| DSA_TAG_PROTO_TRAILER = DSA_TAG_PROTO_TRAILER_VALUE, |
| DSA_TAG_PROTO_8021Q = DSA_TAG_PROTO_8021Q_VALUE, |
| DSA_TAG_PROTO_SJA1105 = DSA_TAG_PROTO_SJA1105_VALUE, |
| DSA_TAG_PROTO_KSZ8795 = DSA_TAG_PROTO_KSZ8795_VALUE, |
| }; |
| |
| struct packet_type; |
| struct dsa_switch; |
| |
| struct dsa_device_ops { |
| struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev); |
| struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, |
| struct packet_type *pt); |
| int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, |
| int *offset); |
| /* Used to determine which traffic should match the DSA filter in |
| * eth_type_trans, and which, if any, should bypass it and be processed |
| * as regular on the master net device. |
| */ |
| bool (*filter)(const struct sk_buff *skb, struct net_device *dev); |
| unsigned int overhead; |
| const char *name; |
| enum dsa_tag_protocol proto; |
| }; |
| |
| #define DSA_TAG_DRIVER_ALIAS "dsa_tag-" |
| #define MODULE_ALIAS_DSA_TAG_DRIVER(__proto) \ |
| MODULE_ALIAS(DSA_TAG_DRIVER_ALIAS __stringify(__proto##_VALUE)) |
| |
| struct dsa_skb_cb { |
| struct sk_buff *clone; |
| bool deferred_xmit; |
| }; |
| |
| struct __dsa_skb_cb { |
| struct dsa_skb_cb cb; |
| u8 priv[48 - sizeof(struct dsa_skb_cb)]; |
| }; |
| |
| #define DSA_SKB_CB(skb) ((struct dsa_skb_cb *)((skb)->cb)) |
| |
| #define DSA_SKB_CB_PRIV(skb) \ |
| ((void *)(skb)->cb + offsetof(struct __dsa_skb_cb, priv)) |
| |
| struct dsa_switch_tree { |
| struct list_head list; |
| |
| /* Notifier chain for switch-wide events */ |
| struct raw_notifier_head nh; |
| |
| /* Tree identifier */ |
| unsigned int index; |
| |
| /* Number of switches attached to this tree */ |
| struct kref refcount; |
| |
| /* Has this tree been applied to the hardware? */ |
| bool setup; |
| |
| /* |
| * Configuration data for the platform device that owns |
| * this dsa switch tree instance. |
| */ |
| struct dsa_platform_data *pd; |
| |
| /* |
| * The switch port to which the CPU is attached. |
| */ |
| struct dsa_port *cpu_dp; |
| |
| /* |
| * Data for the individual switch chips. |
| */ |
| struct dsa_switch *ds[DSA_MAX_SWITCHES]; |
| }; |
| |
| /* TC matchall action types, only mirroring for now */ |
| enum dsa_port_mall_action_type { |
| DSA_PORT_MALL_MIRROR, |
| }; |
| |
| /* TC mirroring entry */ |
| struct dsa_mall_mirror_tc_entry { |
| u8 to_local_port; |
| bool ingress; |
| }; |
| |
| /* TC matchall entry */ |
| struct dsa_mall_tc_entry { |
| struct list_head list; |
| unsigned long cookie; |
| enum dsa_port_mall_action_type type; |
| union { |
| struct dsa_mall_mirror_tc_entry mirror; |
| }; |
| }; |
| |
| |
| struct dsa_port { |
| /* A CPU port is physically connected to a master device. |
| * A user port exposed to userspace has a slave device. |
| */ |
| union { |
| struct net_device *master; |
| struct net_device *slave; |
| }; |
| |
| /* CPU port tagging operations used by master or slave devices */ |
| const struct dsa_device_ops *tag_ops; |
| |
| /* Copies for faster access in master receive hot path */ |
| struct dsa_switch_tree *dst; |
| struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev, |
| struct packet_type *pt); |
| bool (*filter)(const struct sk_buff *skb, struct net_device *dev); |
| |
| enum { |
| DSA_PORT_TYPE_UNUSED = 0, |
| DSA_PORT_TYPE_CPU, |
| DSA_PORT_TYPE_DSA, |
| DSA_PORT_TYPE_USER, |
| } type; |
| |
| struct dsa_switch *ds; |
| unsigned int index; |
| const char *name; |
| struct dsa_port *cpu_dp; |
| const char *mac; |
| struct device_node *dn; |
| unsigned int ageing_time; |
| bool vlan_filtering; |
| u8 stp_state; |
| struct net_device *bridge_dev; |
| struct devlink_port devlink_port; |
| struct phylink *pl; |
| struct phylink_config pl_config; |
| |
| struct work_struct xmit_work; |
| struct sk_buff_head xmit_queue; |
| |
| /* |
| * Give the switch driver somewhere to hang its per-port private data |
| * structures (accessible from the tagger). |
| */ |
| void *priv; |
| |
| /* |
| * Original copy of the master netdev ethtool_ops |
| */ |
| const struct ethtool_ops *orig_ethtool_ops; |
| |
| /* |
| * Original copy of the master netdev net_device_ops |
| */ |
| const struct net_device_ops *orig_ndo_ops; |
| }; |
| |
| struct dsa_switch { |
| struct device *dev; |
| |
| /* |
| * Parent switch tree, and switch index. |
| */ |
| struct dsa_switch_tree *dst; |
| unsigned int index; |
| |
| /* Listener for switch fabric events */ |
| struct notifier_block nb; |
| |
| /* |
| * Give the switch driver somewhere to hang its private data |
| * structure. |
| */ |
| void *priv; |
| |
| /* |
| * Configuration data for this switch. |
| */ |
| struct dsa_chip_data *cd; |
| |
| /* |
| * The switch operations. |
| */ |
| const struct dsa_switch_ops *ops; |
| |
| /* |
| * An array of which element [a] indicates which port on this |
| * switch should be used to send packets to that are destined |
| * for switch a. Can be NULL if there is only one switch chip. |
| */ |
| s8 rtable[DSA_MAX_SWITCHES]; |
| |
| /* |
| * Slave mii_bus and devices for the individual ports. |
| */ |
| u32 phys_mii_mask; |
| struct mii_bus *slave_mii_bus; |
| |
| /* Ageing Time limits in msecs */ |
| unsigned int ageing_time_min; |
| unsigned int ageing_time_max; |
| |
| /* devlink used to represent this switch device */ |
| struct devlink *devlink; |
| |
| /* Number of switch port queues */ |
| unsigned int num_tx_queues; |
| |
| /* Disallow bridge core from requesting different VLAN awareness |
| * settings on ports if not hardware-supported |
| */ |
| bool vlan_filtering_is_global; |
| |
| /* In case vlan_filtering_is_global is set, the VLAN awareness state |
| * should be retrieved from here and not from the per-port settings. |
| */ |
| bool vlan_filtering; |
| |
| /* Dynamically allocated ports, keep last */ |
| size_t num_ports; |
| struct dsa_port ports[]; |
| }; |
| |
| static inline const struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) |
| { |
| return &ds->ports[p]; |
| } |
| |
| static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p) |
| { |
| return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED; |
| } |
| |
| static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) |
| { |
| return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU; |
| } |
| |
| static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) |
| { |
| return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA; |
| } |
| |
| static inline bool dsa_is_user_port(struct dsa_switch *ds, int p) |
| { |
| return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER; |
| } |
| |
| static inline u32 dsa_user_ports(struct dsa_switch *ds) |
| { |
| u32 mask = 0; |
| int p; |
| |
| for (p = 0; p < ds->num_ports; p++) |
| if (dsa_is_user_port(ds, p)) |
| mask |= BIT(p); |
| |
| return mask; |
| } |
| |
| /* Return the local port used to reach an arbitrary switch port */ |
| static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device, |
| int port) |
| { |
| if (device == ds->index) |
| return port; |
| else |
| return ds->rtable[device]; |
| } |
| |
| /* Return the local port used to reach the dedicated CPU port */ |
| static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port) |
| { |
| const struct dsa_port *dp = dsa_to_port(ds, port); |
| const struct dsa_port *cpu_dp = dp->cpu_dp; |
| |
| if (!cpu_dp) |
| return port; |
| |
| return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index); |
| } |
| |
| static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp) |
| { |
| const struct dsa_switch *ds = dp->ds; |
| |
| if (ds->vlan_filtering_is_global) |
| return ds->vlan_filtering; |
| else |
| return dp->vlan_filtering; |
| } |
| |
| typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, |
| bool is_static, void *data); |
| struct dsa_switch_ops { |
| enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, |
| int port); |
| |
| int (*setup)(struct dsa_switch *ds); |
| void (*teardown)(struct dsa_switch *ds); |
| u32 (*get_phy_flags)(struct dsa_switch *ds, int port); |
| |
| /* |
| * Access to the switch's PHY registers. |
| */ |
| int (*phy_read)(struct dsa_switch *ds, int port, int regnum); |
| int (*phy_write)(struct dsa_switch *ds, int port, |
| int regnum, u16 val); |
| |
| /* |
| * Link state adjustment (called from libphy) |
| */ |
| void (*adjust_link)(struct dsa_switch *ds, int port, |
| struct phy_device *phydev); |
| void (*fixed_link_update)(struct dsa_switch *ds, int port, |
| struct fixed_phy_status *st); |
| |
| /* |
| * PHYLINK integration |
| */ |
| void (*phylink_validate)(struct dsa_switch *ds, int port, |
| unsigned long *supported, |
| struct phylink_link_state *state); |
| int (*phylink_mac_link_state)(struct dsa_switch *ds, int port, |
| struct phylink_link_state *state); |
| void (*phylink_mac_config)(struct dsa_switch *ds, int port, |
| unsigned int mode, |
| const struct phylink_link_state *state); |
| void (*phylink_mac_an_restart)(struct dsa_switch *ds, int port); |
| void (*phylink_mac_link_down)(struct dsa_switch *ds, int port, |
| unsigned int mode, |
| phy_interface_t interface); |
| void (*phylink_mac_link_up)(struct dsa_switch *ds, int port, |
| unsigned int mode, |
| phy_interface_t interface, |
| struct phy_device *phydev); |
| void (*phylink_fixed_state)(struct dsa_switch *ds, int port, |
| struct phylink_link_state *state); |
| /* |
| * ethtool hardware statistics. |
| */ |
| void (*get_strings)(struct dsa_switch *ds, int port, |
| u32 stringset, uint8_t *data); |
| void (*get_ethtool_stats)(struct dsa_switch *ds, |
| int port, uint64_t *data); |
| int (*get_sset_count)(struct dsa_switch *ds, int port, int sset); |
| void (*get_ethtool_phy_stats)(struct dsa_switch *ds, |
| int port, uint64_t *data); |
| |
| /* |
| * ethtool Wake-on-LAN |
| */ |
| void (*get_wol)(struct dsa_switch *ds, int port, |
| struct ethtool_wolinfo *w); |
| int (*set_wol)(struct dsa_switch *ds, int port, |
| struct ethtool_wolinfo *w); |
| |
| /* |
| * ethtool timestamp info |
| */ |
| int (*get_ts_info)(struct dsa_switch *ds, int port, |
| struct ethtool_ts_info *ts); |
| |
| /* |
| * Suspend and resume |
| */ |
| int (*suspend)(struct dsa_switch *ds); |
| int (*resume)(struct dsa_switch *ds); |
| |
| /* |
| * Port enable/disable |
| */ |
| int (*port_enable)(struct dsa_switch *ds, int port, |
| struct phy_device *phy); |
| void (*port_disable)(struct dsa_switch *ds, int port); |
| |
| /* |
| * Port's MAC EEE settings |
| */ |
| int (*set_mac_eee)(struct dsa_switch *ds, int port, |
| struct ethtool_eee *e); |
| int (*get_mac_eee)(struct dsa_switch *ds, int port, |
| struct ethtool_eee *e); |
| |
| /* EEPROM access */ |
| int (*get_eeprom_len)(struct dsa_switch *ds); |
| int (*get_eeprom)(struct dsa_switch *ds, |
| struct ethtool_eeprom *eeprom, u8 *data); |
| int (*set_eeprom)(struct dsa_switch *ds, |
| struct ethtool_eeprom *eeprom, u8 *data); |
| |
| /* |
| * Register access. |
| */ |
| int (*get_regs_len)(struct dsa_switch *ds, int port); |
| void (*get_regs)(struct dsa_switch *ds, int port, |
| struct ethtool_regs *regs, void *p); |
| |
| /* |
| * Bridge integration |
| */ |
| int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); |
| int (*port_bridge_join)(struct dsa_switch *ds, int port, |
| struct net_device *bridge); |
| void (*port_bridge_leave)(struct dsa_switch *ds, int port, |
| struct net_device *bridge); |
| void (*port_stp_state_set)(struct dsa_switch *ds, int port, |
| u8 state); |
| void (*port_fast_age)(struct dsa_switch *ds, int port); |
| int (*port_egress_floods)(struct dsa_switch *ds, int port, |
| bool unicast, bool multicast); |
| |
| /* |
| * VLAN support |
| */ |
| int (*port_vlan_filtering)(struct dsa_switch *ds, int port, |
| bool vlan_filtering); |
| int (*port_vlan_prepare)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan); |
| void (*port_vlan_add)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan); |
| int (*port_vlan_del)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_vlan *vlan); |
| /* |
| * Forwarding database |
| */ |
| int (*port_fdb_add)(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid); |
| int (*port_fdb_del)(struct dsa_switch *ds, int port, |
| const unsigned char *addr, u16 vid); |
| int (*port_fdb_dump)(struct dsa_switch *ds, int port, |
| dsa_fdb_dump_cb_t *cb, void *data); |
| |
| /* |
| * Multicast database |
| */ |
| int (*port_mdb_prepare)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb); |
| void (*port_mdb_add)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb); |
| int (*port_mdb_del)(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_mdb *mdb); |
| /* |
| * RXNFC |
| */ |
| int (*get_rxnfc)(struct dsa_switch *ds, int port, |
| struct ethtool_rxnfc *nfc, u32 *rule_locs); |
| int (*set_rxnfc)(struct dsa_switch *ds, int port, |
| struct ethtool_rxnfc *nfc); |
| |
| /* |
| * TC integration |
| */ |
| int (*port_mirror_add)(struct dsa_switch *ds, int port, |
| struct dsa_mall_mirror_tc_entry *mirror, |
| bool ingress); |
| void (*port_mirror_del)(struct dsa_switch *ds, int port, |
| struct dsa_mall_mirror_tc_entry *mirror); |
| int (*port_setup_tc)(struct dsa_switch *ds, int port, |
| enum tc_setup_type type, void *type_data); |
| |
| /* |
| * Cross-chip operations |
| */ |
| int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index, |
| int port, struct net_device *br); |
| void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index, |
| int port, struct net_device *br); |
| |
| /* |
| * PTP functionality |
| */ |
| int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, |
| struct ifreq *ifr); |
| int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, |
| struct ifreq *ifr); |
| bool (*port_txtstamp)(struct dsa_switch *ds, int port, |
| struct sk_buff *clone, unsigned int type); |
| bool (*port_rxtstamp)(struct dsa_switch *ds, int port, |
| struct sk_buff *skb, unsigned int type); |
| |
| /* |
| * Deferred frame Tx |
| */ |
| netdev_tx_t (*port_deferred_xmit)(struct dsa_switch *ds, int port, |
| struct sk_buff *skb); |
| }; |
| |
| struct dsa_switch_driver { |
| struct list_head list; |
| const struct dsa_switch_ops *ops; |
| }; |
| |
| struct net_device *dsa_dev_to_net_device(struct device *dev); |
| |
| /* Keep inline for faster access in hot path */ |
| static inline bool netdev_uses_dsa(struct net_device *dev) |
| { |
| #if IS_ENABLED(CONFIG_NET_DSA) |
| return dev->dsa_ptr && dev->dsa_ptr->rcv; |
| #endif |
| return false; |
| } |
| |
| static inline bool dsa_can_decode(const struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| #if IS_ENABLED(CONFIG_NET_DSA) |
| return !dev->dsa_ptr->filter || dev->dsa_ptr->filter(skb, dev); |
| #endif |
| return false; |
| } |
| |
| struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n); |
| void dsa_unregister_switch(struct dsa_switch *ds); |
| int dsa_register_switch(struct dsa_switch *ds); |
| #ifdef CONFIG_PM_SLEEP |
| int dsa_switch_suspend(struct dsa_switch *ds); |
| int dsa_switch_resume(struct dsa_switch *ds); |
| #else |
| static inline int dsa_switch_suspend(struct dsa_switch *ds) |
| { |
| return 0; |
| } |
| static inline int dsa_switch_resume(struct dsa_switch *ds) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_PM_SLEEP */ |
| |
| enum dsa_notifier_type { |
| DSA_PORT_REGISTER, |
| DSA_PORT_UNREGISTER, |
| }; |
| |
| struct dsa_notifier_info { |
| struct net_device *dev; |
| }; |
| |
| struct dsa_notifier_register_info { |
| struct dsa_notifier_info info; /* must be first */ |
| struct net_device *master; |
| unsigned int port_number; |
| unsigned int switch_number; |
| }; |
| |
| static inline struct net_device * |
| dsa_notifier_info_to_dev(const struct dsa_notifier_info *info) |
| { |
| return info->dev; |
| } |
| |
| #if IS_ENABLED(CONFIG_NET_DSA) |
| int register_dsa_notifier(struct notifier_block *nb); |
| int unregister_dsa_notifier(struct notifier_block *nb); |
| int call_dsa_notifiers(unsigned long val, struct net_device *dev, |
| struct dsa_notifier_info *info); |
| #else |
| static inline int register_dsa_notifier(struct notifier_block *nb) |
| { |
| return 0; |
| } |
| |
| static inline int unregister_dsa_notifier(struct notifier_block *nb) |
| { |
| return 0; |
| } |
| |
| static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev, |
| struct dsa_notifier_info *info) |
| { |
| return NOTIFY_DONE; |
| } |
| #endif |
| |
| /* Broadcom tag specific helpers to insert and extract queue/port number */ |
| #define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q) |
| #define BRCM_TAG_GET_PORT(v) ((v) >> 8) |
| #define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff) |
| |
| |
| netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev); |
| int dsa_port_get_phy_strings(struct dsa_port *dp, uint8_t *data); |
| int dsa_port_get_ethtool_phy_stats(struct dsa_port *dp, uint64_t *data); |
| int dsa_port_get_phy_sset_count(struct dsa_port *dp); |
| void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up); |
| |
| struct dsa_tag_driver { |
| const struct dsa_device_ops *ops; |
| struct list_head list; |
| struct module *owner; |
| }; |
| |
| void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], |
| unsigned int count, |
| struct module *owner); |
| void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], |
| unsigned int count); |
| |
| #define dsa_tag_driver_module_drivers(__dsa_tag_drivers_array, __count) \ |
| static int __init dsa_tag_driver_module_init(void) \ |
| { \ |
| dsa_tag_drivers_register(__dsa_tag_drivers_array, __count, \ |
| THIS_MODULE); \ |
| return 0; \ |
| } \ |
| module_init(dsa_tag_driver_module_init); \ |
| \ |
| static void __exit dsa_tag_driver_module_exit(void) \ |
| { \ |
| dsa_tag_drivers_unregister(__dsa_tag_drivers_array, __count); \ |
| } \ |
| module_exit(dsa_tag_driver_module_exit) |
| |
| /** |
| * module_dsa_tag_drivers() - Helper macro for registering DSA tag |
| * drivers |
| * @__ops_array: Array of tag driver strucutres |
| * |
| * Helper macro for DSA tag drivers which do not do anything special |
| * in module init/exit. Each module may only use this macro once, and |
| * calling it replaces module_init() and module_exit(). |
| */ |
| #define module_dsa_tag_drivers(__ops_array) \ |
| dsa_tag_driver_module_drivers(__ops_array, ARRAY_SIZE(__ops_array)) |
| |
| #define DSA_TAG_DRIVER_NAME(__ops) dsa_tag_driver ## _ ## __ops |
| |
| /* Create a static structure we can build a linked list of dsa_tag |
| * drivers |
| */ |
| #define DSA_TAG_DRIVER(__ops) \ |
| static struct dsa_tag_driver DSA_TAG_DRIVER_NAME(__ops) = { \ |
| .ops = &__ops, \ |
| } |
| |
| /** |
| * module_dsa_tag_driver() - Helper macro for registering a single DSA tag |
| * driver |
| * @__ops: Single tag driver structures |
| * |
| * Helper macro for DSA tag drivers which do not do anything special |
| * in module init/exit. Each module may only use this macro once, and |
| * calling it replaces module_init() and module_exit(). |
| */ |
| #define module_dsa_tag_driver(__ops) \ |
| DSA_TAG_DRIVER(__ops); \ |
| \ |
| static struct dsa_tag_driver *dsa_tag_driver_array[] = { \ |
| &DSA_TAG_DRIVER_NAME(__ops) \ |
| }; \ |
| module_dsa_tag_drivers(dsa_tag_driver_array) |
| #endif |
| |