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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#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 dsa_8021q_context;struct tc_action;
#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#define DSA_TAG_PROTO_SJA1110_VALUE 23#define DSA_TAG_PROTO_RTL8_4_VALUE 24#define DSA_TAG_PROTO_RTL8_4T_VALUE 25#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26#define DSA_TAG_PROTO_LAN937X_VALUE 27#define DSA_TAG_PROTO_VSC73XX_8021Q_VALUE 28#define DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE 29#define DSA_TAG_PROTO_YT921X_VALUE 30#define DSA_TAG_PROTO_MXL_GSW1XX_VALUE 31#define DSA_TAG_PROTO_MXL862_VALUE 32#define DSA_TAG_PROTO_NETC_VALUE 33
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_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_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, DSA_TAG_PROTO_SJA1110 = DSA_TAG_PROTO_SJA1110_VALUE, DSA_TAG_PROTO_RTL8_4 = DSA_TAG_PROTO_RTL8_4_VALUE, DSA_TAG_PROTO_RTL8_4T = DSA_TAG_PROTO_RTL8_4T_VALUE, DSA_TAG_PROTO_RZN1_A5PSW = DSA_TAG_PROTO_RZN1_A5PSW_VALUE, DSA_TAG_PROTO_LAN937X = DSA_TAG_PROTO_LAN937X_VALUE, DSA_TAG_PROTO_VSC73XX_8021Q = DSA_TAG_PROTO_VSC73XX_8021Q_VALUE, DSA_TAG_PROTO_YT921X = DSA_TAG_PROTO_YT921X_VALUE, DSA_TAG_PROTO_MXL_GSW1XX = DSA_TAG_PROTO_MXL_GSW1XX_VALUE, DSA_TAG_PROTO_MXL862 = DSA_TAG_PROTO_MXL862_VALUE, DSA_TAG_PROTO_NETC = DSA_TAG_PROTO_NETC_VALUE,};
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); void (*flow_dissect)(const struct sk_buff *skb, __be16 *proto, int *offset); int (*connect)(struct dsa_switch *ds); void (*disconnect)(struct dsa_switch *ds); unsigned int needed_headroom; unsigned int needed_tailroom; const char *name; enum dsa_tag_protocol proto; /* Some tagging protocols either mangle or shift the destination MAC * address, in which case the DSA conduit would drop packets on ingress * if what it understands out of the destination MAC address is not in * its RX filter. */ bool promisc_on_conduit;};
struct dsa_lag { struct net_device *dev; unsigned int id; struct mutex fdb_lock; struct list_head fdbs; refcount_t refcount;};
struct dsa_switch_tree { struct list_head list;
/* List of switch ports */ struct list_head ports;
/* 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;
/* Maps offloaded LAG netdevs to a zero-based linear ID for * drivers that need it. */ struct dsa_lag **lags;
/* 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;
/* 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;
/* List of DSA links composing the routing table */ struct list_head rtable;
/* Length of "lags" array */ unsigned int lags_len;
/* Track the largest switch index within a tree */ unsigned int last_switch;};
/* LAG IDs are one-based, the dst->lags array is zero-based */#define dsa_lags_foreach_id(_id, _dst) \ for ((_id) = 1; (_id) <= (_dst)->lags_len; (_id)++) \ if ((_dst)->lags[(_id) - 1])
#define dsa_lag_foreach_port(_dp, _dst, _lag) \ list_for_each_entry((_dp), &(_dst)->ports, list) \ if (dsa_port_offloads_lag((_dp), (_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 dsa_lag *dsa_lag_by_id(struct dsa_switch_tree *dst, unsigned int id){ /* DSA LAG IDs are one-based, dst->lags is zero-based */ return dst->lags[id - 1];}
static inline int dsa_lag_id(struct dsa_switch_tree *dst, struct net_device *lag_dev){ unsigned int id;
dsa_lags_foreach_id(id, dst) { struct dsa_lag *lag = dsa_lag_by_id(dst, id);
if (lag->dev == lag_dev) return lag->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 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 flow_action_police policer; };};
struct dsa_bridge { struct net_device *dev; unsigned int num; bool tx_fwd_offload; refcount_t refcount;};
struct dsa_port { /* A CPU port is physically connected to a conduit device. A user port * exposes a network device to user-space, called 'user' here. */ union { struct net_device *conduit; struct net_device *user; };
/* 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 conduit receive hot path */ struct dsa_switch_tree *dst; struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev);
struct dsa_switch *ds;
unsigned int index;
enum { DSA_PORT_TYPE_UNUSED = 0, DSA_PORT_TYPE_CPU, DSA_PORT_TYPE_DSA, DSA_PORT_TYPE_USER, } type;
const char *name; struct dsa_port *cpu_dp; u8 mac[ETH_ALEN];
u8 stp_state;
/* Warning: the following bit fields are not atomic, and updating them * can only be done from code paths where concurrency is not possible * (probe time or under rtnl_lock). */ u8 vlan_filtering:1;
/* Managed by DSA on user ports and by drivers on CPU and DSA ports */ u8 learning:1;
u8 lag_tx_enabled:1;
/* conduit state bits, valid only on CPU ports */ u8 conduit_admin_up:1; u8 conduit_oper_up:1;
/* Valid only on user ports */ u8 cpu_port_in_lag:1;
u8 setup:1;
struct device_node *dn; unsigned int ageing_time;
struct dsa_bridge *bridge; struct devlink_port devlink_port; struct phylink *pl; struct phylink_config pl_config; netdevice_tracker conduit_tracker; struct dsa_lag *lag; struct net_device *hsr_dev;
struct list_head list;
/* * Original copy of the conduit netdev ethtool_ops */ const struct ethtool_ops *orig_ethtool_ops;
/* List of MAC addresses that must be forwarded on this port. * These are only valid on CPU ports and DSA links. */ struct mutex addr_lists_lock; struct list_head fdbs; struct list_head mdbs;
struct mutex vlans_lock; union { /* List of VLANs that CPU and DSA ports are members of. * Access to this is serialized by the sleepable @vlans_lock. */ struct list_head vlans; /* List of VLANs that user ports are members of. * Access to this is serialized by netif_addr_lock_bh(). */ struct list_head user_vlans; };};
static inline struct dsa_port *dsa_phylink_to_port(struct phylink_config *config){ return container_of(config, struct dsa_port, pl_config);}
/* 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;};
enum dsa_db_type { DSA_DB_PORT, DSA_DB_LAG, DSA_DB_BRIDGE,};
struct dsa_db { enum dsa_db_type type;
union { const struct dsa_port *dp; struct dsa_lag lag; struct dsa_bridge bridge; };};
struct dsa_mac_addr { unsigned char addr[ETH_ALEN]; u16 vid; refcount_t refcount; struct list_head list; struct dsa_db db;};
struct dsa_vlan { u16 vid; refcount_t refcount; struct list_head list;};
struct dsa_switch { struct device *dev;
/* * Parent switch tree, and switch index. */ struct dsa_switch_tree *dst; unsigned int index;
/* Warning: the following bit fields are not atomic, and updating them * can only be done from code paths where concurrency is not possible * (probe time or under rtnl_lock). */ u32 setup:1;
/* Disallow bridge core from requesting different VLAN awareness * settings on ports if not hardware-supported */ u32 vlan_filtering_is_global:1;
/* Keep VLAN filtering enabled on ports not offloading any upper */ u32 needs_standalone_vlan_filtering:1;
/* 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. */ u32 configure_vlan_while_not_filtering:1;
/* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames. * DEPRECATED: Do NOT set this field in new drivers. Instead look at * the dsa_software_vlan_untag() comments. */ u32 untag_bridge_pvid:1; /* Pop the default_pvid of VLAN-aware bridge ports from tagged frames. * Useful if the switch cannot preserve the VLAN tag as seen on the * wire for user port ingress, and chooses to send all frames as * VLAN-tagged to the CPU, including those which were originally * untagged. */ u32 untag_vlan_aware_bridge_pvid:1;
/* Let DSA manage the FDB entries towards the * CPU, based on the software bridge database. */ u32 assisted_learning_on_cpu_port:1;
/* In case vlan_filtering_is_global is set, the VLAN awareness state * should be retrieved from here and not from the per-port settings. */ u32 vlan_filtering:1;
/* 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. */ u32 mtu_enforcement_ingress:1;
/* Drivers that isolate the FDBs of multiple bridges must set this * to true to receive the bridge as an argument in .port_fdb_{add,del} * and .port_mdb_{add,del}. Otherwise, the bridge.num will always be * passed as zero. */ u32 fdb_isolation:1;
/* Drivers that have global DSCP mapping settings must set this to * true to automatically apply the settings to all ports. */ u32 dscp_prio_mapping_is_global:1;
/* Listener for switch fabric events */ struct notifier_block nb;
/* * Give the switch driver somewhere to hang its private data * structure. */ void *priv;
void *tagger_data;
/* * Configuration data for this switch. */ struct dsa_chip_data *cd;
/* * The switch operations. */ const struct dsa_switch_ops *ops;
/* * Allow a DSA switch driver to override the phylink MAC ops */ const struct phylink_mac_ops *phylink_mac_ops;
/* * User mii_bus and devices for the individual ports. */ u32 phys_mii_mask; struct mii_bus *user_mii_bus;
/* Ageing Time limits in msecs */ unsigned int ageing_time_min; unsigned int ageing_time_max;
/* Storage for drivers using tag_8021q */ struct dsa_8021q_context *tag_8021q_ctx;
/* devlink used to represent this switch device */ struct devlink *devlink;
/* Number of switch port queues */ unsigned int num_tx_queues;
/* 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;
/* Drivers that support bridge forwarding offload or FDB isolation * should set this to the maximum number of bridges spanning the same * switch tree (or all trees, in the case of cross-tree bridging * support) that can be offloaded. */ unsigned int max_num_bridges;
unsigned int 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_port_is_dsa(struct dsa_port *port){ return port->type == DSA_PORT_TYPE_DSA;}
static inline bool dsa_port_is_cpu(struct dsa_port *port){ return port->type == DSA_PORT_TYPE_CPU;}
static inline bool dsa_port_is_user(struct dsa_port *dp){ return dp->type == DSA_PORT_TYPE_USER;}
static inline bool dsa_port_is_unused(struct dsa_port *dp){ return dp->type == DSA_PORT_TYPE_UNUSED;}
static inline bool dsa_port_conduit_is_operational(struct dsa_port *dp){ return dsa_port_is_cpu(dp) && dp->conduit_admin_up && dp->conduit_oper_up;}
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;}
#define dsa_tree_for_each_user_port(_dp, _dst) \ list_for_each_entry((_dp), &(_dst)->ports, list) \ if (dsa_port_is_user((_dp)))
#define dsa_tree_for_each_user_port_continue_reverse(_dp, _dst) \ list_for_each_entry_continue_reverse((_dp), &(_dst)->ports, list) \ if (dsa_port_is_user((_dp)))
#define dsa_tree_for_each_cpu_port(_dp, _dst) \ list_for_each_entry((_dp), &(_dst)->ports, list) \ if (dsa_port_is_cpu((_dp)))
#define dsa_switch_for_each_port(_dp, _ds) \ list_for_each_entry((_dp), &(_ds)->dst->ports, list) \ if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_port_safe(_dp, _next, _ds) \ list_for_each_entry_safe((_dp), (_next), &(_ds)->dst->ports, list) \ if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_port_continue_reverse(_dp, _ds) \ list_for_each_entry_continue_reverse((_dp), &(_ds)->dst->ports, list) \ if ((_dp)->ds == (_ds))
#define dsa_switch_for_each_available_port(_dp, _ds) \ dsa_switch_for_each_port((_dp), (_ds)) \ if (!dsa_port_is_unused((_dp)))
#define dsa_switch_for_each_user_port(_dp, _ds) \ dsa_switch_for_each_port((_dp), (_ds)) \ if (dsa_port_is_user((_dp)))
#define dsa_switch_for_each_user_port_continue_reverse(_dp, _ds) \ dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ if (dsa_port_is_user((_dp)))
#define dsa_switch_for_each_cpu_port(_dp, _ds) \ dsa_switch_for_each_port((_dp), (_ds)) \ if (dsa_port_is_cpu((_dp)))
#define dsa_switch_for_each_cpu_port_continue_reverse(_dp, _ds) \ dsa_switch_for_each_port_continue_reverse((_dp), (_ds)) \ if (dsa_port_is_cpu((_dp)))
static inline u32 dsa_user_ports(struct dsa_switch *ds){ struct dsa_port *dp; u32 mask = 0;
dsa_switch_for_each_user_port(dp, ds) mask |= BIT(dp->index);
return mask;}
static inline u32 dsa_cpu_ports(struct dsa_switch *ds){ struct dsa_port *cpu_dp; u32 mask = 0;
dsa_switch_for_each_cpu_port(cpu_dp, ds) mask |= BIT(cpu_dp->index);
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);}
/* Return true if this is the local port used to reach the CPU port */static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port){ if (dsa_is_unused_port(ds, port)) return false;
return port == dsa_upstream_port(ds, port);}
/* Return true if this is a DSA port leading away from the CPU */static inline bool dsa_is_downstream_port(struct dsa_switch *ds, int port){ return dsa_is_dsa_port(ds, port) && !dsa_is_upstream_port(ds, port);}
/* Return the local port used to reach the CPU port */static inline unsigned int dsa_switch_upstream_port(struct dsa_switch *ds){ struct dsa_port *dp;
dsa_switch_for_each_available_port(dp, ds) { return dsa_upstream_port(ds, dp->index); }
return ds->num_ports;}
/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning * that the routing port from @downstream_ds to @upstream_ds is also the port * which @downstream_ds uses to reach its dedicated CPU. */static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds, struct dsa_switch *downstream_ds){ int routing_port;
if (upstream_ds == downstream_ds) return true;
routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
return dsa_is_upstream_port(downstream_ds, routing_port);}
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 unsigned int dsa_port_lag_id_get(struct dsa_port *dp){ return dp->lag ? dp->lag->id : 0;}
static inline struct net_device *dsa_port_lag_dev_get(struct dsa_port *dp){ return dp->lag ? dp->lag->dev : NULL;}
static inline bool dsa_port_offloads_lag(struct dsa_port *dp, const struct dsa_lag *lag){ return dsa_port_lag_dev_get(dp) == lag->dev;}
static inline struct net_device *dsa_port_to_conduit(const struct dsa_port *dp){ if (dp->cpu_port_in_lag) return dsa_port_lag_dev_get(dp->cpu_dp);
return dp->cpu_dp->conduit;}
static inlinestruct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp){ if (!dp->bridge) return NULL;
if (dp->lag) return dp->lag->dev; else if (dp->hsr_dev) return dp->hsr_dev;
return dp->user;}
static inline struct net_device *dsa_port_bridge_dev_get(const struct dsa_port *dp){ return dp->bridge ? dp->bridge->dev : NULL;}
static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp){ return dp->bridge ? dp->bridge->num : 0;}
static inline bool dsa_port_bridge_same(const struct dsa_port *a, const struct dsa_port *b){ struct net_device *br_a = dsa_port_bridge_dev_get(a); struct net_device *br_b = dsa_port_bridge_dev_get(b);
/* Standalone ports are not in the same bridge with one another */ return (!br_a || !br_b) ? false : (br_a == br_b);}
static inline bool dsa_port_offloads_bridge_port(struct dsa_port *dp, const struct net_device *dev){ return dsa_port_to_bridge_port(dp) == dev;}
static inline booldsa_port_offloads_bridge_dev(struct dsa_port *dp, const struct net_device *bridge_dev){ /* DSA ports connected to a bridge, and event was emitted * for the bridge. */ return dsa_port_bridge_dev_get(dp) == bridge_dev;}
static inline bool dsa_port_offloads_bridge(struct dsa_port *dp, const struct dsa_bridge *bridge){ return dsa_port_bridge_dev_get(dp) == bridge->dev;}
/* Returns true if any port of this tree offloads the given net_device */static inline bool dsa_tree_offloads_bridge_port(struct dsa_switch_tree *dst, const struct net_device *dev){ struct dsa_port *dp;
list_for_each_entry(dp, &dst->ports, list) if (dsa_port_offloads_bridge_port(dp, dev)) return true;
return false;}
/* Returns true if any port of this tree offloads the given bridge */static inline booldsa_tree_offloads_bridge_dev(struct dsa_switch_tree *dst, const struct net_device *bridge_dev){ struct dsa_port *dp;
list_for_each_entry(dp, &dst->ports, list) if (dsa_port_offloads_bridge_dev(dp, bridge_dev)) return true;
return false;}
#define dsa_switch_for_each_bridge_member(_dp, _ds, _bdev) \ dsa_switch_for_each_user_port(_dp, _ds) \ if (dsa_port_offloads_bridge_dev(_dp, _bdev))
static inline u32dsa_bridge_ports(struct dsa_switch *ds, const struct net_device *bdev){ struct dsa_port *dp; u32 mask = 0;
dsa_switch_for_each_bridge_member(dp, ds, bdev) mask |= BIT(dp->index);
return mask;}
static inline bool dsa_port_tree_same(const struct dsa_port *a, const struct dsa_port *b){ return a->ds->dst == b->ds->dst;}
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid, bool is_static, void *data);struct dsa_switch_ops { /* * Tagging protocol helpers called for the CPU ports and DSA links. * @get_tag_protocol retrieves the initial tagging protocol and is * mandatory. Switches which can operate using multiple tagging * protocols should implement @change_tag_protocol and report in * @get_tag_protocol the tagger in current use. */ enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds, int port, enum dsa_tag_protocol mprot); int (*change_tag_protocol)(struct dsa_switch *ds, enum dsa_tag_protocol proto); /* * Method for switch drivers to connect to the tagging protocol driver * in current use. The switch driver can provide handlers for certain * types of packets for switch management. */ int (*connect_tag_protocol)(struct dsa_switch *ds, enum dsa_tag_protocol proto);
int (*port_change_conduit)(struct dsa_switch *ds, int port, struct net_device *conduit, struct netlink_ext_ack *extack);
/* Optional switch-wide initialization and destruction methods */ int (*setup)(struct dsa_switch *ds); void (*teardown)(struct dsa_switch *ds);
/* Per-port initialization and destruction methods. Mandatory if the * driver registers devlink port regions, optional otherwise. */ int (*port_setup)(struct dsa_switch *ds, int port); void (*port_teardown)(struct dsa_switch *ds, int port);
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);
/* * PHYLINK integration */ void (*phylink_get_caps)(struct dsa_switch *ds, int port, struct phylink_config *config); void (*phylink_fixed_state)(struct dsa_switch *ds, int port, struct phylink_link_state *state); /* * Port statistics counters. */ 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); void (*get_eth_phy_stats)(struct dsa_switch *ds, int port, struct ethtool_eth_phy_stats *phy_stats); void (*get_eth_mac_stats)(struct dsa_switch *ds, int port, struct ethtool_eth_mac_stats *mac_stats); void (*get_eth_ctrl_stats)(struct dsa_switch *ds, int port, struct ethtool_eth_ctrl_stats *ctrl_stats); void (*get_rmon_stats)(struct dsa_switch *ds, int port, struct ethtool_rmon_stats *rmon_stats, const struct ethtool_rmon_hist_range **ranges); void (*get_ts_stats)(struct dsa_switch *ds, int port, struct ethtool_ts_stats *ts_stats); void (*get_stats64)(struct dsa_switch *ds, int port, struct rtnl_link_stats64 *s); void (*get_pause_stats)(struct dsa_switch *ds, int port, struct ethtool_pause_stats *pause_stats); void (*self_test)(struct dsa_switch *ds, int port, struct ethtool_test *etest, u64 *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 kernel_ethtool_ts_info *ts);
/* * ethtool MAC merge layer */ int (*get_mm)(struct dsa_switch *ds, int port, struct ethtool_mm_state *state); int (*set_mm)(struct dsa_switch *ds, int port, struct ethtool_mm_cfg *cfg, struct netlink_ext_ack *extack); void (*get_mm_stats)(struct dsa_switch *ds, int port, struct ethtool_mm_stats *stats);
/* * DCB ops */ int (*port_get_default_prio)(struct dsa_switch *ds, int port); int (*port_set_default_prio)(struct dsa_switch *ds, int port, u8 prio); int (*port_get_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp); int (*port_add_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, u8 prio); int (*port_del_dscp_prio)(struct dsa_switch *ds, int port, u8 dscp, u8 prio); int (*port_set_apptrust)(struct dsa_switch *ds, int port, const u8 *sel, int nsel); int (*port_get_apptrust)(struct dsa_switch *ds, int port, u8 *sel, int *nsel);
/* * 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);
/* * Notification for MAC address changes on user ports. Drivers can * currently only veto operations. They should not use the method to * program the hardware, since the operation is not rolled back in case * of other errors. */ int (*port_set_mac_address)(struct dsa_switch *ds, int port, const unsigned char *addr);
/* * Compatibility between device trees defining multiple CPU ports and * drivers which are not OK to use by default the numerically smallest * CPU port of a switch for its local ports. This can return NULL, * meaning "don't know/don't care". */ struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds);
/* * Port's MAC EEE settings */ bool (*support_eee)(struct dsa_switch *ds, int port); int (*set_mac_eee)(struct dsa_switch *ds, int port, struct ethtool_keee *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);
/* * Upper device tracking. */ int (*port_prechangeupper)(struct dsa_switch *ds, int port, struct netdev_notifier_changeupper_info *info);
/* * Bridge integration */ int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); int (*port_bridge_join)(struct dsa_switch *ds, int port, struct dsa_bridge bridge, bool *tx_fwd_offload, struct netlink_ext_ack *extack); void (*port_bridge_leave)(struct dsa_switch *ds, int port, struct dsa_bridge bridge); void (*port_stp_state_set)(struct dsa_switch *ds, int port, u8 state); int (*port_mst_state_set)(struct dsa_switch *ds, int port, const struct switchdev_mst_state *state); void (*port_fast_age)(struct dsa_switch *ds, int port); int (*port_vlan_fast_age)(struct dsa_switch *ds, int port, u16 vid); int (*port_pre_bridge_flags)(struct dsa_switch *ds, int port, struct switchdev_brport_flags flags, struct netlink_ext_ack *extack); int (*port_bridge_flags)(struct dsa_switch *ds, int port, struct switchdev_brport_flags flags, struct netlink_ext_ack *extack); void (*port_set_host_flood)(struct dsa_switch *ds, int port, bool uc, bool mc);
/* * VLAN support */ int (*port_vlan_filtering)(struct dsa_switch *ds, int port, bool vlan_filtering, struct netlink_ext_ack *extack); int (*port_vlan_add)(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan, struct netlink_ext_ack *extack); int (*port_vlan_del)(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan); int (*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge, const struct switchdev_vlan_msti *msti);
/* * Forwarding database */ int (*port_fdb_add)(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid, struct dsa_db db); int (*port_fdb_del)(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid, struct dsa_db db); int (*port_fdb_dump)(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb, void *data); int (*lag_fdb_add)(struct dsa_switch *ds, struct dsa_lag lag, const unsigned char *addr, u16 vid, struct dsa_db db); int (*lag_fdb_del)(struct dsa_switch *ds, struct dsa_lag lag, const unsigned char *addr, u16 vid, struct dsa_db db);
/* * Multicast database */ int (*port_mdb_add)(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb, struct dsa_db db); int (*port_mdb_del)(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb, struct dsa_db db); /* * 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 (*cls_flower_add)(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress); int (*cls_flower_del)(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress); int (*cls_flower_stats)(struct dsa_switch *ds, int port, struct flow_cls_offload *cls, bool ingress); int (*port_mirror_add)(struct dsa_switch *ds, int port, struct dsa_mall_mirror_tc_entry *mirror, bool ingress, struct netlink_ext_ack *extack); void (*port_mirror_del)(struct dsa_switch *ds, int port, struct dsa_mall_mirror_tc_entry *mirror); int (*port_policer_add)(struct dsa_switch *ds, int port, const struct flow_action_police *policer, struct netlink_ext_ack *extack); void (*port_policer_del)(struct dsa_switch *ds, int port); 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 tree_index, int sw_index, int port, struct dsa_bridge bridge, struct netlink_ext_ack *extack); void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, int sw_index, int port, struct dsa_bridge bridge); int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, int port); int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, int port, struct dsa_lag lag, struct netdev_lag_upper_info *info, struct netlink_ext_ack *extack); int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, int port, struct dsa_lag lag);
/* * PTP functionality */ int (*port_hwtstamp_get)(struct dsa_switch *ds, int port, struct kernel_hwtstamp_config *config); int (*port_hwtstamp_set)(struct dsa_switch *ds, int port, struct kernel_hwtstamp_config *config, struct netlink_ext_ack *extack); void (*port_txtstamp)(struct dsa_switch *ds, int port, struct sk_buff *skb); bool (*port_rxtstamp)(struct dsa_switch *ds, int port, struct sk_buff *skb, unsigned int type);
/* Devlink parameters, etc */ int (*devlink_param_get)(struct dsa_switch *ds, u32 id, struct devlink_param_gset_ctx *ctx); int (*devlink_param_set)(struct dsa_switch *ds, u32 id, struct devlink_param_gset_ctx *ctx); int (*devlink_info_get)(struct dsa_switch *ds, struct devlink_info_req *req, struct netlink_ext_ack *extack); int (*devlink_sb_pool_get)(struct dsa_switch *ds, unsigned int sb_index, u16 pool_index, struct devlink_sb_pool_info *pool_info); int (*devlink_sb_pool_set)(struct dsa_switch *ds, unsigned int sb_index, u16 pool_index, u32 size, enum devlink_sb_threshold_type threshold_type, struct netlink_ext_ack *extack); int (*devlink_sb_port_pool_get)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 *p_threshold); int (*devlink_sb_port_pool_set)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 threshold, struct netlink_ext_ack *extack); int (*devlink_sb_tc_pool_bind_get)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u16 *p_pool_index, u32 *p_threshold); int (*devlink_sb_tc_pool_bind_set)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u16 pool_index, u32 threshold, struct netlink_ext_ack *extack); int (*devlink_sb_occ_snapshot)(struct dsa_switch *ds, unsigned int sb_index); int (*devlink_sb_occ_max_clear)(struct dsa_switch *ds, unsigned int sb_index); int (*devlink_sb_occ_port_pool_get)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 pool_index, u32 *p_cur, u32 *p_max); int (*devlink_sb_occ_tc_port_bind_get)(struct dsa_switch *ds, int port, unsigned int sb_index, u16 tc_index, enum devlink_sb_pool_type pool_type, u32 *p_cur, u32 *p_max);
/* * MTU change functionality. Switches can also adjust their MRU through * this method. By MTU, one understands the SDU (L2 payload) length. * If the switch needs to account for the DSA tag on the CPU port, this * method needs to do so privately. */ int (*port_change_mtu)(struct dsa_switch *ds, int port, int new_mtu); int (*port_max_mtu)(struct dsa_switch *ds, int port);
/* * LAG integration */ int (*port_lag_change)(struct dsa_switch *ds, int port); int (*port_lag_join)(struct dsa_switch *ds, int port, struct dsa_lag lag, struct netdev_lag_upper_info *info, struct netlink_ext_ack *extack); int (*port_lag_leave)(struct dsa_switch *ds, int port, struct dsa_lag lag);
/* * HSR integration */ int (*port_hsr_join)(struct dsa_switch *ds, int port, struct net_device *hsr, struct netlink_ext_ack *extack); int (*port_hsr_leave)(struct dsa_switch *ds, int port, struct net_device *hsr);
/* * MRP integration */ int (*port_mrp_add)(struct dsa_switch *ds, int port, const struct switchdev_obj_mrp *mrp); int (*port_mrp_del)(struct dsa_switch *ds, int port, const struct switchdev_obj_mrp *mrp); int (*port_mrp_add_ring_role)(struct dsa_switch *ds, int port, const struct switchdev_obj_ring_role_mrp *mrp); int (*port_mrp_del_ring_role)(struct dsa_switch *ds, int port, const struct switchdev_obj_ring_role_mrp *mrp);
/* * tag_8021q operations */ int (*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags); int (*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
/* * DSA conduit tracking operations */ void (*conduit_state_change)(struct dsa_switch *ds, const struct net_device *conduit, bool operational);};
#define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes, \ dsa_devlink_param_get, dsa_devlink_param_set, NULL)
int dsa_devlink_param_get(struct devlink *dl, u32 id, struct devlink_param_gset_ctx *ctx, struct netlink_ext_ack *extack);int dsa_devlink_param_set(struct devlink *dl, u32 id, struct devlink_param_gset_ctx *ctx, struct netlink_ext_ack *extack);int dsa_devlink_params_register(struct dsa_switch *ds, const struct devlink_param *params, size_t params_count);void dsa_devlink_params_unregister(struct dsa_switch *ds, const struct devlink_param *params, size_t params_count);int dsa_devlink_resource_register(struct dsa_switch *ds, const char *resource_name, u64 resource_size, u64 resource_id, u64 parent_resource_id, const struct devlink_resource_size_params *size_params);
void dsa_devlink_resources_unregister(struct dsa_switch *ds);
void dsa_devlink_resource_occ_get_register(struct dsa_switch *ds, u64 resource_id, devlink_resource_occ_get_t *occ_get, void *occ_get_priv);void dsa_devlink_resource_occ_get_unregister(struct dsa_switch *ds, u64 resource_id);struct devlink_region *dsa_devlink_region_create(struct dsa_switch *ds, const struct devlink_region_ops *ops, u32 region_max_snapshots, u64 region_size);struct devlink_region *dsa_devlink_port_region_create(struct dsa_switch *ds, int port, const struct devlink_port_region_ops *ops, u32 region_max_snapshots, u64 region_size);void dsa_devlink_region_destroy(struct devlink_region *region);
struct dsa_port *dsa_port_from_netdev(struct net_device *netdev);
struct dsa_devlink_priv { struct dsa_switch *ds;};
static inline struct dsa_switch *dsa_devlink_to_ds(struct devlink *dl){ struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
return dl_priv->ds;}
static inlinestruct dsa_switch *dsa_devlink_port_to_ds(struct devlink_port *port){ struct devlink *dl = port->devlink; struct dsa_devlink_priv *dl_priv = devlink_priv(dl);
return dl_priv->ds;}
static inline int dsa_devlink_port_to_port(struct devlink_port *port){ return port->index;}
bool dsa_fdb_present_in_other_db(struct dsa_switch *ds, int port, const unsigned char *addr, u16 vid, struct dsa_db db);bool dsa_mdb_present_in_other_db(struct dsa_switch *ds, int port, const struct switchdev_obj_port_mdb *mdb, struct dsa_db db);
int dsa_port_simple_hsr_validate(struct dsa_switch *ds, int port, struct net_device *hsr, struct netlink_ext_ack *extack);int dsa_port_simple_hsr_join(struct dsa_switch *ds, int port, struct net_device *hsr, struct netlink_ext_ack *extack);int dsa_port_simple_hsr_leave(struct dsa_switch *ds, int port, struct net_device *hsr);
/* Keep inline for faster access in hot path */static inline bool netdev_uses_dsa(const struct net_device *dev){#if IS_ENABLED(CONFIG_NET_DSA) return dev->dsa_ptr && dev->dsa_ptr->rcv;#endif return false;}
/* All DSA tags that push the EtherType to the right (basically all except tail * tags, which don't break dissection) can be treated the same from the * perspective of the flow dissector. * * We need to return: * - offset: the (B - A) difference between: * A. the position of the real EtherType and * B. the current skb->data (aka ETH_HLEN bytes into the frame, aka 2 bytes * after the normal EtherType was supposed to be) * The offset in bytes is exactly equal to the tagger overhead (and half of * that, in __be16 shorts). * * - proto: the value of the real EtherType. */static inline void dsa_tag_generic_flow_dissect(const struct sk_buff *skb, __be16 *proto, int *offset){#if IS_ENABLED(CONFIG_NET_DSA) const struct dsa_device_ops *ops = skb->dev->dsa_ptr->tag_ops; int tag_len = ops->needed_headroom;
*offset = tag_len; *proto = ((__be16 *)skb->data)[(tag_len / 2) - 1];#endif}
void dsa_unregister_switch(struct dsa_switch *ds);int dsa_register_switch(struct dsa_switch *ds);void dsa_switch_shutdown(struct dsa_switch *ds);struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);void dsa_flush_workqueue(void);#ifdef CONFIG_PM_SLEEPint dsa_switch_suspend(struct dsa_switch *ds);int dsa_switch_resume(struct dsa_switch *ds);#elsestatic 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 */
#if IS_ENABLED(CONFIG_NET_DSA)bool dsa_user_dev_check(const struct net_device *dev);#elsestatic inline bool dsa_user_dev_check(const struct net_device *dev){ return false;}#endif
netdev_tx_t dsa_enqueue_skb(struct sk_buff *skb, struct net_device *dev);void dsa_port_phylink_mac_change(struct dsa_switch *ds, int port, bool up);bool dsa_supports_eee(struct dsa_switch *ds, int port);
#endif