/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2007-2012 Nicira, Inc. */ #ifndef VPORT_H #define VPORT_H … #include <linux/if_tunnel.h> #include <linux/list.h> #include <linux/netlink.h> #include <linux/openvswitch.h> #include <linux/reciprocal_div.h> #include <linux/skbuff.h> #include <linux/spinlock.h> #include <linux/u64_stats_sync.h> #include "datapath.h" struct vport; struct vport_parms; /* The following definitions are for users of the vport subsystem: */ int ovs_vport_init(void); void ovs_vport_exit(void); struct vport *ovs_vport_add(const struct vport_parms *); void ovs_vport_del(struct vport *); struct vport *ovs_vport_locate(const struct net *net, const char *name); void ovs_vport_get_stats(struct vport *, struct ovs_vport_stats *); int ovs_vport_get_upcall_stats(struct vport *vport, struct sk_buff *skb); int ovs_vport_set_options(struct vport *, struct nlattr *options); int ovs_vport_get_options(const struct vport *, struct sk_buff *); int ovs_vport_set_upcall_portids(struct vport *, const struct nlattr *pids); int ovs_vport_get_upcall_portids(const struct vport *, struct sk_buff *); u32 ovs_vport_find_upcall_portid(const struct vport *, struct sk_buff *); /** * struct vport_portids - array of netlink portids of a vport. * must be protected by rcu. * @rn_ids: The reciprocal value of @n_ids. * @rcu: RCU callback head for deferred destruction. * @n_ids: Size of @ids array. * @ids: Array storing the Netlink socket pids to be used for packets received * on this port that miss the flow table. */ struct vport_portids { … }; /** * struct vport - one port within a datapath * @dev: Pointer to net_device. * @dev_tracker: refcount tracker for @dev reference * @dp: Datapath to which this port belongs. * @upcall_portids: RCU protected 'struct vport_portids'. * @port_no: Index into @dp's @ports array. * @hash_node: Element in @dev_table hash table in vport.c. * @dp_hash_node: Element in @datapath->ports hash table in datapath.c. * @ops: Class structure. * @upcall_stats: Upcall stats of every ports. * @detach_list: list used for detaching vport in net-exit call. * @rcu: RCU callback head for deferred destruction. */ struct vport { … }; /** * struct vport_parms - parameters for creating a new vport * * @name: New vport's name. * @type: New vport's type. * @options: %OVS_VPORT_ATTR_OPTIONS attribute from Netlink message, %NULL if * none was supplied. * @desired_ifindex: New vport's ifindex. * @dp: New vport's datapath. * @port_no: New vport's port number. */ struct vport_parms { … }; /** * struct vport_ops - definition of a type of virtual port * * @type: %OVS_VPORT_TYPE_* value for this type of virtual port. * @create: Create a new vport configured as specified. On success returns * a new vport allocated with ovs_vport_alloc(), otherwise an ERR_PTR() value. * @destroy: Destroys a vport. Must call vport_free() on the vport but not * before an RCU grace period has elapsed. * @set_options: Modify the configuration of an existing vport. May be %NULL * if modification is not supported. * @get_options: Appends vport-specific attributes for the configuration of an * existing vport to a &struct sk_buff. May be %NULL for a vport that does not * have any configuration. * @send: Send a packet on the device. * zero for dropped packets or negative for error. */ struct vport_ops { … }; /** * struct vport_upcall_stats_percpu - per-cpu packet upcall statistics for * a given vport. * @n_success: Number of packets that upcall to userspace succeed. * @n_fail: Number of packets that upcall to userspace failed. */ struct vport_upcall_stats_percpu { … }; struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *, const struct vport_parms *); void ovs_vport_free(struct vport *); #define VPORT_ALIGN … /** * vport_priv - access private data area of vport * * @vport: vport to access * * If a nonzero size was passed in priv_size of vport_alloc() a private data * area was allocated on creation. This allows that area to be accessed and * used for any purpose needed by the vport implementer. */ static inline void *vport_priv(const struct vport *vport) { … } /** * vport_from_priv - lookup vport from private data pointer * * @priv: Start of private data area. * * It is sometimes useful to translate from a pointer to the private data * area to the vport, such as in the case where the private data pointer is * the result of a hash table lookup. @priv must point to the start of the * private data area. */ static inline struct vport *vport_from_priv(void *priv) { … } int ovs_vport_receive(struct vport *, struct sk_buff *, const struct ip_tunnel_info *); static inline const char *ovs_vport_name(struct vport *vport) { … } int __ovs_vport_ops_register(struct vport_ops *ops); #define ovs_vport_ops_register(ops) … void ovs_vport_ops_unregister(struct vport_ops *ops); void ovs_vport_send(struct vport *vport, struct sk_buff *skb, u8 mac_proto); #endif /* vport.h */
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