[deliverable/linux.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;
	/* t_conn_lock synchronizes the connection establishment between
	 * rds_tcp_accept_one and rds_tcp_conn_connect
	 */
	struct mutex		t_conn_lock;
	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;
void rds_tcp_accept_work(struct sock *sk);

/* 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 */
struct socket *rds_tcp_listen_init(struct net *);
void rds_tcp_listen_stop(struct socket *);
void rds_tcp_listen_data_ready(struct sock *sk);
int rds_tcp_accept_one(struct socket *sock);
int rds_tcp_keepalive(struct socket *sock);

/* 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;
bd7c5f98 SV	15	/* t_conn_lock synchronizes the connection establishment between
	16	* rds_tcp_accept_one and rds_tcp_conn_connect
	17	*/
	18	struct mutex t_conn_lock;
70041088 AG	19	struct socket *t_sock;
	20	void *t_orig_write_space;
	21	void *t_orig_data_ready;
	22	void *t_orig_state_change;
	23
	24	struct rds_tcp_incoming *t_tinc;
	25	size_t t_tinc_hdr_rem;
	26	size_t t_tinc_data_rem;
	27
	28	/* XXX error report? */
	29	struct work_struct t_conn_w;
	30	struct work_struct t_send_w;
	31	struct work_struct t_down_w;
	32	struct work_struct t_recv_w;
	33
	34	/* for info exporting only */
	35	struct list_head t_list_item;
	36	u32 t_last_sent_nxt;
	37	u32 t_last_expected_una;
	38	u32 t_last_seen_una;
	39	};
	40
	41	struct rds_tcp_statistics {
	42	uint64_t s_tcp_data_ready_calls;
	43	uint64_t s_tcp_write_space_calls;
	44	uint64_t s_tcp_sndbuf_full;
	45	uint64_t s_tcp_connect_raced;
	46	uint64_t s_tcp_listen_closed_stale;
	47	};
	48
	49	/* tcp.c */
70041088 AG	50	void rds_tcp_tune(struct socket *sock);
	51	void rds_tcp_nonagle(struct socket *sock);
	52	void rds_tcp_set_callbacks(struct socket sock, struct rds_connection conn);
	53	void rds_tcp_restore_callbacks(struct socket *sock,
	54	struct rds_tcp_connection *tc);
	55	u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
	56	u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
	57	u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
	58	extern struct rds_transport rds_tcp_transport;
467fa153	59	void rds_tcp_accept_work(struct sock *sk);
70041088 AG	60
	61	/* tcp_connect.c */
	62	int rds_tcp_conn_connect(struct rds_connection *conn);
	63	void rds_tcp_conn_shutdown(struct rds_connection *conn);
	64	void rds_tcp_state_change(struct sock *sk);
	65
	66	/* tcp_listen.c */
467fa153 SV	67	struct socket rds_tcp_listen_init(struct net );
467fa153 SV	68	void rds_tcp_listen_stop(struct socket *);
676d2369	69	void rds_tcp_listen_data_ready(struct sock *sk);
467fa153 SV	70	int rds_tcp_accept_one(struct socket *sock);
467fa153 SV	71	int rds_tcp_keepalive(struct socket *sock);
70041088 AG	72
70041088 AG	73	/* tcp_recv.c */
ef87b7ea	74	int rds_tcp_recv_init(void);
70041088	75	void rds_tcp_recv_exit(void);
676d2369	76	void rds_tcp_data_ready(struct sock *sk);
70041088	77	int rds_tcp_recv(struct rds_connection *conn);
70041088	78	void rds_tcp_inc_free(struct rds_incoming *inc);
c310e72c	79	int rds_tcp_inc_copy_to_user(struct rds_incoming inc, struct iov_iter to);
70041088 AG	80
	81	/* tcp_send.c */
	82	void rds_tcp_xmit_prepare(struct rds_connection *conn);
	83	void rds_tcp_xmit_complete(struct rds_connection *conn);
	84	int rds_tcp_xmit(struct rds_connection conn, struct rds_message rm,
	85	unsigned int hdr_off, unsigned int sg, unsigned int off);
	86	void rds_tcp_write_space(struct sock *sk);
70041088 AG	87
	88	/* tcp_stats.c */
	89	DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
	90	#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
	91	unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
	92	unsigned int avail);
	93
	94	#endif