[mirror_ubuntu-artful-kernel.git] / net / rds / tcp.h

#ifndef _RDS_TCP_H
#define _RDS_TCP_H

#define RDS_TCP_PORT	16385

struct rds_tcp_incoming {
	struct rds_incoming	ti_inc;
	struct sk_buff_head	ti_skb_list;
};

struct rds_tcp_connection {

	struct list_head	t_tcp_node;
	struct rds_connection   *conn;
	struct socket		*t_sock;
	void			*t_orig_write_space;
	void			*t_orig_data_ready;
	void			*t_orig_state_change;

	struct rds_tcp_incoming	*t_tinc;
	size_t			t_tinc_hdr_rem;
	size_t			t_tinc_data_rem;

	/* XXX error report? */
	struct work_struct	t_conn_w;
	struct work_struct	t_send_w;
	struct work_struct	t_down_w;
	struct work_struct	t_recv_w;

	/* for info exporting only */
	struct list_head	t_list_item;
	u32			t_last_sent_nxt;
	u32			t_last_expected_una;
	u32			t_last_seen_una;
};

struct rds_tcp_statistics {
	uint64_t	s_tcp_data_ready_calls;
	uint64_t	s_tcp_write_space_calls;
	uint64_t	s_tcp_sndbuf_full;
	uint64_t	s_tcp_connect_raced;
	uint64_t	s_tcp_listen_closed_stale;
};

/* tcp.c */
void rds_tcp_tune(struct socket *sock);
void rds_tcp_nonagle(struct socket *sock);
void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn);
void rds_tcp_restore_callbacks(struct socket *sock,
			       struct rds_tcp_connection *tc);
u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
extern struct rds_transport rds_tcp_transport;

/* tcp_connect.c */
int rds_tcp_conn_connect(struct rds_connection *conn);
void rds_tcp_conn_shutdown(struct rds_connection *conn);
void rds_tcp_state_change(struct sock *sk);

/* tcp_listen.c */
int rds_tcp_listen_init(void);
void rds_tcp_listen_stop(void);
void rds_tcp_listen_data_ready(struct sock *sk);

/* tcp_recv.c */
int rds_tcp_recv_init(void);
void rds_tcp_recv_exit(void);
void rds_tcp_data_ready(struct sock *sk);
int rds_tcp_recv(struct rds_connection *conn);
void rds_tcp_inc_free(struct rds_incoming *inc);
int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);

/* tcp_send.c */
void rds_tcp_xmit_prepare(struct rds_connection *conn);
void rds_tcp_xmit_complete(struct rds_connection *conn);
int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
	         unsigned int hdr_off, unsigned int sg, unsigned int off);
void rds_tcp_write_space(struct sock *sk);

/* tcp_stats.c */
DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
				     unsigned int avail);

#endif
Commit	Line	Data
70041088 AG	1	#ifndef _RDS_TCP_H
	2	#define _RDS_TCP_H
	3
	4	#define RDS_TCP_PORT 16385
	5
	6	struct rds_tcp_incoming {
	7	struct rds_incoming ti_inc;
	8	struct sk_buff_head ti_skb_list;
	9	};
	10
	11	struct rds_tcp_connection {
	12
	13	struct list_head t_tcp_node;
	14	struct rds_connection *conn;
	15	struct socket *t_sock;
	16	void *t_orig_write_space;
	17	void *t_orig_data_ready;
	18	void *t_orig_state_change;
	19
	20	struct rds_tcp_incoming *t_tinc;
	21	size_t t_tinc_hdr_rem;
	22	size_t t_tinc_data_rem;
	23
	24	/* XXX error report? */
	25	struct work_struct t_conn_w;
	26	struct work_struct t_send_w;
	27	struct work_struct t_down_w;
	28	struct work_struct t_recv_w;
	29
	30	/* for info exporting only */
	31	struct list_head t_list_item;
	32	u32 t_last_sent_nxt;
	33	u32 t_last_expected_una;
	34	u32 t_last_seen_una;
	35	};
	36
	37	struct rds_tcp_statistics {
	38	uint64_t s_tcp_data_ready_calls;
	39	uint64_t s_tcp_write_space_calls;
	40	uint64_t s_tcp_sndbuf_full;
	41	uint64_t s_tcp_connect_raced;
	42	uint64_t s_tcp_listen_closed_stale;
	43	};
	44
	45	/* tcp.c */
70041088 AG	46	void rds_tcp_tune(struct socket *sock);
	47	void rds_tcp_nonagle(struct socket *sock);
	48	void rds_tcp_set_callbacks(struct socket sock, struct rds_connection conn);
	49	void rds_tcp_restore_callbacks(struct socket *sock,
	50	struct rds_tcp_connection *tc);
	51	u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
	52	u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
	53	u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
	54	extern struct rds_transport rds_tcp_transport;
	55
	56	/* tcp_connect.c */
	57	int rds_tcp_conn_connect(struct rds_connection *conn);
	58	void rds_tcp_conn_shutdown(struct rds_connection *conn);
	59	void rds_tcp_state_change(struct sock *sk);
	60
	61	/* tcp_listen.c */
ef87b7ea	62	int rds_tcp_listen_init(void);
70041088	63	void rds_tcp_listen_stop(void);
676d2369	64	void rds_tcp_listen_data_ready(struct sock *sk);
70041088 AG	65
70041088 AG	66	/* tcp_recv.c */
ef87b7ea	67	int rds_tcp_recv_init(void);
70041088	68	void rds_tcp_recv_exit(void);
676d2369	69	void rds_tcp_data_ready(struct sock *sk);
70041088	70	int rds_tcp_recv(struct rds_connection *conn);
70041088	71	void rds_tcp_inc_free(struct rds_incoming *inc);
c310e72c	72	int rds_tcp_inc_copy_to_user(struct rds_incoming inc, struct iov_iter to);
70041088 AG	73
	74	/* tcp_send.c */
	75	void rds_tcp_xmit_prepare(struct rds_connection *conn);
	76	void rds_tcp_xmit_complete(struct rds_connection *conn);
	77	int rds_tcp_xmit(struct rds_connection conn, struct rds_message rm,
	78	unsigned int hdr_off, unsigned int sg, unsigned int off);
	79	void rds_tcp_write_space(struct sock *sk);
70041088 AG	80
	81	/* tcp_stats.c */
	82	DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
	83	#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
	84	unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
	85	unsigned int avail);
	86
	87	#endif