blob: 41c228300525c029df02472b609ada1a71cea98e [file] [log] [blame]
Andy Grover70041082009-08-21 12:28:31 +00001#ifndef _RDS_TCP_H
2#define _RDS_TCP_H
3
4#define RDS_TCP_PORT 16385
5
6struct rds_tcp_incoming {
7 struct rds_incoming ti_inc;
8 struct sk_buff_head ti_skb_list;
9};
10
11struct rds_tcp_connection {
12
13 struct list_head t_tcp_node;
14 struct rds_connection *conn;
Sowmini Varadhanbd7c5f92016-05-02 11:24:52 -070015 /* 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;
Andy Grover70041082009-08-21 12:28:31 +000019 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
41struct 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 */
Andy Grover70041082009-08-21 12:28:31 +000050void rds_tcp_tune(struct socket *sock);
51void rds_tcp_nonagle(struct socket *sock);
52void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn);
53void rds_tcp_restore_callbacks(struct socket *sock,
54 struct rds_tcp_connection *tc);
55u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
56u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
57u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
58extern struct rds_transport rds_tcp_transport;
Sowmini Varadhan467fa152015-08-05 01:43:26 -040059void rds_tcp_accept_work(struct sock *sk);
Andy Grover70041082009-08-21 12:28:31 +000060
61/* tcp_connect.c */
62int rds_tcp_conn_connect(struct rds_connection *conn);
63void rds_tcp_conn_shutdown(struct rds_connection *conn);
64void rds_tcp_state_change(struct sock *sk);
65
66/* tcp_listen.c */
Sowmini Varadhan467fa152015-08-05 01:43:26 -040067struct socket *rds_tcp_listen_init(struct net *);
68void rds_tcp_listen_stop(struct socket *);
David S. Miller676d2362014-04-11 16:15:36 -040069void rds_tcp_listen_data_ready(struct sock *sk);
Sowmini Varadhan467fa152015-08-05 01:43:26 -040070int rds_tcp_accept_one(struct socket *sock);
71int rds_tcp_keepalive(struct socket *sock);
Andy Grover70041082009-08-21 12:28:31 +000072
73/* tcp_recv.c */
Zach Brownef87b7e2010-07-09 12:26:20 -070074int rds_tcp_recv_init(void);
Andy Grover70041082009-08-21 12:28:31 +000075void rds_tcp_recv_exit(void);
David S. Miller676d2362014-04-11 16:15:36 -040076void rds_tcp_data_ready(struct sock *sk);
Andy Grover70041082009-08-21 12:28:31 +000077int rds_tcp_recv(struct rds_connection *conn);
Andy Grover70041082009-08-21 12:28:31 +000078void rds_tcp_inc_free(struct rds_incoming *inc);
Al Viroc310e722014-11-20 09:21:14 -050079int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);
Andy Grover70041082009-08-21 12:28:31 +000080
81/* tcp_send.c */
82void rds_tcp_xmit_prepare(struct rds_connection *conn);
83void rds_tcp_xmit_complete(struct rds_connection *conn);
84int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
85 unsigned int hdr_off, unsigned int sg, unsigned int off);
86void rds_tcp_write_space(struct sock *sk);
Andy Grover70041082009-08-21 12:28:31 +000087
88/* tcp_stats.c */
89DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
90#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
91unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
92 unsigned int avail);
93
94#endif