/* 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#define DSA_TAG_PROTO_OCELOT_VALUE 15#define DSA_TAG_PROTO_AR9331_VALUE 16#define DSA_TAG_PROTO_RTL4_A_VALUE 17#define DSA_TAG_PROTO_HELLCREEK_VALUE 18#define DSA_TAG_PROTO_XRS700X_VALUE 19#define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20#define DSA_TAG_PROTO_SEVILLE_VALUE 21#define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 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_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_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, DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_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); void (*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; /* Some tagging protocols either mangle or shift the destination MAC * address, in which case the DSA master would drop packets on ingress * if what it understands out of the destination MAC address is not in * its RX filter. */ bool promisc_on_master; bool tail_tag;}; /* This structure defines the control interfaces that are overlayed by the * DSA layer on top of the DSA CPU/management net_device instance. This is * used by the core net_device layer while calling various net_device_ops * function pointers. */struct dsa_netdevice_ops { int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);}; #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_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; /* Tagging protocol operations */ const struct dsa_device_ops *tag_ops; /* Default tagging protocol preferred by the switches in this * tree. */ enum dsa_tag_protocol default_proto; /* * Configuration data for the platform device that owns * this dsa switch tree instance. */ struct dsa_platform_data *pd; /* List of switch ports */ struct list_head ports; /* List of DSA links composing the routing table */ struct list_head rtable; /* Maps offloaded LAG netdevs to a zero-based linear ID for * drivers that need it. */ struct net_device **lags; unsigned int lags_len;}; #define dsa_lags_foreach_id(_id, _dst) \ for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \ if ((_dst)->lags[(_id)]) #define dsa_lag_foreach_port(_dp, _dst, _lag) \ list_for_each_entry((_dp), &(_dst)->ports, list) \ if ((_dp)->lag_dev == (_lag)) #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst, unsigned int id){ return dst->lags[id];} static inline int dsa_lag_id(struct dsa_switch_tree *dst, struct net_device *lag){ unsigned int id; dsa_lags_foreach_id(id, dst) { if (dsa_lag_dev(dst, id) == lag) return id; } return -ENODEV;} /* TC matchall action types */enum dsa_port_mall_action_type { DSA_PORT_MALL_MIRROR, DSA_PORT_MALL_POLICER,}; /* TC mirroring entry */struct dsa_mall_mirror_tc_entry { u8 to_local_port; bool ingress;}; /* TC port policer entry */struct dsa_mall_policer_tc_entry { u32 burst; u64 rate_bytes_per_sec;}; /* 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_mall_policer_tc_entry policer; };}; 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; }; /* Copy of the tagging protocol operations, for quicker access * in the data path. Valid only for the CPU ports. */ 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; u8 mac[ETH_ALEN]; struct device_node *dn; unsigned int ageing_time; bool vlan_filtering; u8 stp_state; struct net_device *bridge_dev; struct devlink_port devlink_port; bool devlink_port_setup; struct phylink *pl; struct phylink_config pl_config; struct net_device *lag_dev; bool lag_tx_enabled; struct net_device *hsr_dev; struct list_head list; /* * 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 dsa_netdevice_ops *netdev_ops; bool setup;}; /* TODO: ideally DSA ports would have a single dp->link_dp member, * and no dst->rtable nor this struct dsa_link would be needed, * but this would require some more complex tree walking, * so keep it stupid at the moment and list them all. */struct dsa_link { struct dsa_port *dp; struct dsa_port *link_dp; struct list_head list;}; struct dsa_switch { bool setup; 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; /* * 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; /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges * that have vlan_filtering=0. All drivers should ideally set this (and * then the option would get removed), but it is unknown whether this * would break things or not. */ bool configure_vlan_while_not_filtering; /* If the switch driver always programs the CPU port as egress tagged * despite the VLAN configuration indicating otherwise, then setting * @untag_bridge_pvid will force the DSA receive path to pop the bridge's * default_pvid VLAN tagged frames to offer a consistent behavior * between a vlan_filtering=0 and vlan_filtering=1 bridge device. */ bool untag_bridge_pvid; /* Let DSA manage the FDB entries towards the CPU, based on the * software bridge database. */ bool assisted_learning_on_cpu_port; /* 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; /* MAC PCS does not provide link state change interrupt, and requires * polling. Flag passed on to PHYLINK. */ bool pcs_poll; /* For switches that only have the MRU configurable. To ensure the * configured MTU is not exceeded, normalization of MRU on all bridged * interfaces is needed. */ bool mtu_enforcement_ingress; /* Drivers that benefit from having an ID associated with each * offloaded LAG should set this to the maximum number of * supported IDs. DSA will then maintain a mapping of _at * least_ these many IDs, accessible to drivers via * dsa_lag_id(). */ unsigned int num_lag_ids; size_t num_ports;}; static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p){ struct dsa_switch_tree *dst = ds->dst; struct dsa_port *dp; list_for_each_entry(dp, &dst->ports, list) if (dp->ds == ds && dp->index == p) return dp; return NULL;} 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 device */static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device){ struct dsa_switch_tree *dst = ds->dst; struct dsa_link *dl; list_for_each_entry(dl, &dst->rtable, list) if (dl->dp->ds == ds && dl->link_dp->ds->index == device) return dl->dp->index; return ds->num_ports;} /* 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 dsa_routing_port(ds, 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;} static inlinestruct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp){ if (!dp->bridge_dev) return NULL; if (dp->lag_dev) return dp->lag_dev; else if (dp->hsr_dev) return dp->hsr_dev; return dp->slave;} Lines 1–500 of 1070. Load more
/* 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 #define DSA_TAG_PROTO_OCELOT_VALUE 15 #define DSA_TAG_PROTO_AR9331_VALUE 16 #define DSA_TAG_PROTO_RTL4_A_VALUE 17 #define DSA_TAG_PROTO_HELLCREEK_VALUE 18 #define DSA_TAG_PROTO_XRS700X_VALUE 19 #define DSA_TAG_PROTO_OCELOT_8021Q_VALUE 20 #define DSA_TAG_PROTO_SEVILLE_VALUE 21 #define DSA_TAG_PROTO_BRCM_LEGACY_VALUE 22 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_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_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, DSA_TAG_PROTO_OCELOT = DSA_TAG_PROTO_OCELOT_VALUE, DSA_TAG_PROTO_AR9331 = DSA_TAG_PROTO_AR9331_VALUE, DSA_TAG_PROTO_RTL4_A = DSA_TAG_PROTO_RTL4_A_VALUE, DSA_TAG_PROTO_HELLCREEK = DSA_TAG_PROTO_HELLCREEK_VALUE, DSA_TAG_PROTO_XRS700X = DSA_TAG_PROTO_XRS700X_VALUE, DSA_TAG_PROTO_OCELOT_8021Q = DSA_TAG_PROTO_OCELOT_8021Q_VALUE, DSA_TAG_PROTO_SEVILLE = DSA_TAG_PROTO_SEVILLE_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); void (*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; /* Some tagging protocols either mangle or shift the destination MAC * address, in which case the DSA master would drop packets on ingress * if what it understands out of the destination MAC address is not in * its RX filter. */ bool promisc_on_master; bool tail_tag; }; /* This structure defines the control interfaces that are overlayed by the * DSA layer on top of the DSA CPU/management net_device instance. This is * used by the core net_device layer while calling various net_device_ops * function pointers. */ struct dsa_netdevice_ops { int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd); }; #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_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; /* Tagging protocol operations */ const struct dsa_device_ops *tag_ops; /* Default tagging protocol preferred by the switches in this * tree. */ enum dsa_tag_protocol default_proto; /* * Configuration data for the platform device that owns * this dsa switch tree instance. */ struct dsa_platform_data *pd; /* List of switch ports */ struct list_head ports; /* List of DSA links composing the routing table */ struct list_head rtable; /* Maps offloaded LAG netdevs to a zero-based linear ID for * drivers that need it. */ struct net_device **lags; unsigned int lags_len; }; #define dsa_lags_foreach_id(_id, _dst) \ for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \ if ((_dst)->lags[(_id)]) #define dsa_lag_foreach_port(_dp, _dst, _lag) \ list_for_each_entry((_dp), &(_dst)->ports, list) \ if ((_dp)->lag_dev == (_lag)) #define dsa_hsr_foreach_port(_dp, _ds, _hsr) \ list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ if ((_dp)->ds == (_ds) && (_dp)->hsr_dev == (_hsr)) static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst, unsigned int id) { return dst->lags[id]; } static inline int dsa_lag_id(struct dsa_switch_tree *dst, struct net_device *lag) { unsigned int id; dsa_lags_foreach_id(id, dst) { if (dsa_lag_dev(dst, id) == lag) return id; } return -ENODEV; } /* TC matchall action types */ enum dsa_port_mall_action_type { DSA_PORT_MALL_MIRROR, DSA_PORT_MALL_POLICER, }; /* TC mirroring entry */ struct dsa_mall_mirror_tc_entry { u8 to_local_port; bool ingress; }; /* TC port policer entry */ struct dsa_mall_policer_tc_entry { u32 burst; u64 rate_bytes_per_sec; }; /* 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_mall_policer_tc_entry policer; }; }; 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; }; /* Copy of the tagging protocol operations, for quicker access * in the data path. Valid only for the CPU ports. */ 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; u8 mac[ETH_ALEN]; struct device_node *dn; unsigned int ageing_time; bool vlan_filtering; u8 stp_state; struct net_device *bridge_dev; struct devlink_port devlink_port; bool devlink_port_setup; struct phylink *pl; struct phylink_config pl_config; struct net_device *lag_dev; bool lag_tx_enabled; struct net_device *hsr_dev; struct list_head list; /* * 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 dsa_netdevice_ops *netdev_ops; bool setup; }; /* TODO: ideally DSA ports would have a single dp->link_dp member, * and no dst->rtable nor this struct dsa_link would be needed, * but this would require some more complex tree walking, * so keep it stupid at the moment and list them all. */ struct dsa_link { struct dsa_port *dp; struct dsa_port *link_dp; struct list_head list; }; struct dsa_switch { bool setup; 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; /* * 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; /* Pass .port_vlan_add and .port_vlan_del to drivers even for bridges * that have vlan_filtering=0. All drivers should ideally set this (and * then the option would get removed), but it is unknown whether this * would break things or not. */ bool configure_vlan_while_not_filtering; /* If the switch driver always programs the CPU port as egress tagged * despite the VLAN configuration indicating otherwise, then setting * @untag_bridge_pvid will force the DSA receive path to pop the bridge's * default_pvid VLAN tagged frames to offer a consistent behavior * between a vlan_filtering=0 and vlan_filtering=1 bridge device. */ bool untag_bridge_pvid; /* Let DSA manage the FDB entries towards the CPU, based on the * software bridge database. */ bool assisted_learning_on_cpu_port; /* 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; /* MAC PCS does not provide link state change interrupt, and requires * polling. Flag passed on to PHYLINK. */ bool pcs_poll; /* For switches that only have the MRU configurable. To ensure the * configured MTU is not exceeded, normalization of MRU on all bridged * interfaces is needed. */ bool mtu_enforcement_ingress; /* Drivers that benefit from having an ID associated with each * offloaded LAG should set this to the maximum number of * supported IDs. DSA will then maintain a mapping of _at * least_ these many IDs, accessible to drivers via * dsa_lag_id(). */ unsigned int num_lag_ids; size_t num_ports; }; static inline struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p) { struct dsa_switch_tree *dst = ds->dst; struct dsa_port *dp; list_for_each_entry(dp, &dst->ports, list) if (dp->ds == ds && dp->index == p) return dp; return NULL; } 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 device */ static inline unsigned int dsa_routing_port(struct dsa_switch *ds, int device) { struct dsa_switch_tree *dst = ds->dst; struct dsa_link *dl; list_for_each_entry(dl, &dst->rtable, list) if (dl->dp->ds == ds && dl->link_dp->ds->index == device) return dl->dp->index; return ds->num_ports; } /* 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 dsa_routing_port(ds, 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; } static inline struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp) { if (!dp->bridge_dev) return NULL; if (dp->lag_dev) return dp->lag_dev; else if (dp->hsr_dev) return dp->hsr_dev; return dp->slave; }