Blame - include/linux/virtio_vsock.h - kernel/msm-4.9

blob: 9638bfeb0d1f639ae310d1586b4e2fca567ba2f7 [file] [log] [blame]

Asias He	06a8fc7	2016-07-28 15:36:32 +0100	[diff] [blame]	1	#ifndef _LINUX_VIRTIO_VSOCK_H
				2	#define _LINUX_VIRTIO_VSOCK_H
				3
				4	#include <uapi/linux/virtio_vsock.h>
				5	#include <linux/socket.h>
				6	#include <net/sock.h>
				7	#include <net/af_vsock.h>
				8
				9	#define VIRTIO_VSOCK_DEFAULT_MIN_BUF_SIZE 128
				10	#define VIRTIO_VSOCK_DEFAULT_BUF_SIZE (1024 * 256)
				11	#define VIRTIO_VSOCK_DEFAULT_MAX_BUF_SIZE (1024 * 256)
				12	#define VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE (1024 * 4)
				13	#define VIRTIO_VSOCK_MAX_BUF_SIZE 0xFFFFFFFFUL
				14	#define VIRTIO_VSOCK_MAX_PKT_BUF_SIZE (1024 * 64)
				15
				16	enum {
				17	VSOCK_VQ_RX = 0, /* for host to guest data */
				18	VSOCK_VQ_TX = 1, /* for guest to host data */
				19	VSOCK_VQ_EVENT = 2,
				20	VSOCK_VQ_MAX = 3,
				21	};
				22
				23	/* Per-socket state (accessed via vsk->trans) */
				24	struct virtio_vsock_sock {
				25	struct vsock_sock *vsk;
				26
				27	/* Protected by lock_sock(sk_vsock(trans->vsk)) */
				28	u32 buf_size;
				29	u32 buf_size_min;
				30	u32 buf_size_max;
				31
				32	spinlock_t tx_lock;
				33	spinlock_t rx_lock;
				34
				35	/* Protected by tx_lock */
				36	u32 tx_cnt;
				37	u32 buf_alloc;
				38	u32 peer_fwd_cnt;
				39	u32 peer_buf_alloc;
				40
				41	/* Protected by rx_lock */
				42	u32 fwd_cnt;
				43	u32 rx_bytes;
				44	struct list_head rx_queue;
				45	};
				46
				47	struct virtio_vsock_pkt {
				48	struct virtio_vsock_hdr hdr;
				49	struct work_struct work;
				50	struct list_head list;
				51	void *buf;
				52	u32 len;
				53	u32 off;
				54	bool reply;
				55	};
				56
				57	struct virtio_vsock_pkt_info {
				58	u32 remote_cid, remote_port;
				59	struct msghdr *msg;
				60	u32 pkt_len;
				61	u16 type;
				62	u16 op;
				63	u32 flags;
				64	bool reply;
				65	};
				66
				67	struct virtio_transport {
				68	/* This must be the first field */
				69	struct vsock_transport transport;
				70
				71	/* Takes ownership of the packet */
				72	int (send_pkt)(struct virtio_vsock_pkt pkt);
				73	};
				74
				75	ssize_t
				76	virtio_transport_stream_dequeue(struct vsock_sock *vsk,
				77	struct msghdr *msg,
				78	size_t len,
				79	int type);
				80	int
				81	virtio_transport_dgram_dequeue(struct vsock_sock *vsk,
				82	struct msghdr *msg,
				83	size_t len, int flags);
				84
				85	s64 virtio_transport_stream_has_data(struct vsock_sock *vsk);
				86	s64 virtio_transport_stream_has_space(struct vsock_sock *vsk);
				87
				88	int virtio_transport_do_socket_init(struct vsock_sock *vsk,
				89	struct vsock_sock *psk);
				90	u64 virtio_transport_get_buffer_size(struct vsock_sock *vsk);
				91	u64 virtio_transport_get_min_buffer_size(struct vsock_sock *vsk);
				92	u64 virtio_transport_get_max_buffer_size(struct vsock_sock *vsk);
				93	void virtio_transport_set_buffer_size(struct vsock_sock *vsk, u64 val);
				94	void virtio_transport_set_min_buffer_size(struct vsock_sock *vsk, u64 val);
				95	void virtio_transport_set_max_buffer_size(struct vsock_sock *vs, u64 val);
				96	int
				97	virtio_transport_notify_poll_in(struct vsock_sock *vsk,
				98	size_t target,
				99	bool *data_ready_now);
				100	int
				101	virtio_transport_notify_poll_out(struct vsock_sock *vsk,
				102	size_t target,
				103	bool *space_available_now);
				104
				105	int virtio_transport_notify_recv_init(struct vsock_sock *vsk,
				106	size_t target, struct vsock_transport_recv_notify_data *data);
				107	int virtio_transport_notify_recv_pre_block(struct vsock_sock *vsk,
				108	size_t target, struct vsock_transport_recv_notify_data *data);
				109	int virtio_transport_notify_recv_pre_dequeue(struct vsock_sock *vsk,
				110	size_t target, struct vsock_transport_recv_notify_data *data);
				111	int virtio_transport_notify_recv_post_dequeue(struct vsock_sock *vsk,
				112	size_t target, ssize_t copied, bool data_read,
				113	struct vsock_transport_recv_notify_data *data);
				114	int virtio_transport_notify_send_init(struct vsock_sock *vsk,
				115	struct vsock_transport_send_notify_data *data);
				116	int virtio_transport_notify_send_pre_block(struct vsock_sock *vsk,
				117	struct vsock_transport_send_notify_data *data);
				118	int virtio_transport_notify_send_pre_enqueue(struct vsock_sock *vsk,
				119	struct vsock_transport_send_notify_data *data);
				120	int virtio_transport_notify_send_post_enqueue(struct vsock_sock *vsk,
				121	ssize_t written, struct vsock_transport_send_notify_data *data);
				122
				123	u64 virtio_transport_stream_rcvhiwat(struct vsock_sock *vsk);
				124	bool virtio_transport_stream_is_active(struct vsock_sock *vsk);
				125	bool virtio_transport_stream_allow(u32 cid, u32 port);
				126	int virtio_transport_dgram_bind(struct vsock_sock *vsk,
				127	struct sockaddr_vm *addr);
				128	bool virtio_transport_dgram_allow(u32 cid, u32 port);
				129
				130	int virtio_transport_connect(struct vsock_sock *vsk);
				131
				132	int virtio_transport_shutdown(struct vsock_sock *vsk, int mode);
				133
				134	void virtio_transport_release(struct vsock_sock *vsk);
				135
				136	ssize_t
				137	virtio_transport_stream_enqueue(struct vsock_sock *vsk,
				138	struct msghdr *msg,
				139	size_t len);
				140	int
				141	virtio_transport_dgram_enqueue(struct vsock_sock *vsk,
				142	struct sockaddr_vm *remote_addr,
				143	struct msghdr *msg,
				144	size_t len);
				145
				146	void virtio_transport_destruct(struct vsock_sock *vsk);
				147
				148	void virtio_transport_recv_pkt(struct virtio_vsock_pkt *pkt);
				149	void virtio_transport_free_pkt(struct virtio_vsock_pkt *pkt);
				150	void virtio_transport_inc_tx_pkt(struct virtio_vsock_sock vvs, struct virtio_vsock_pkt pkt);
				151	u32 virtio_transport_get_credit(struct virtio_vsock_sock *vvs, u32 wanted);
				152	void virtio_transport_put_credit(struct virtio_vsock_sock *vvs, u32 credit);
				153
				154	#endif /* _LINUX_VIRTIO_VSOCK_H */