Linux 4.14-rc6
[linux-2.6-block.git] / net / rds / tcp.h
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1#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;
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14 struct rds_conn_path *t_cpath;
15 /* t_conn_path_lock synchronizes the connection establishment between
b04e8554 16 * rds_tcp_accept_one and rds_tcp_conn_path_connect
bd7c5f98 17 */
02105b2c 18 struct mutex t_conn_path_lock;
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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
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 */
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50void rds_tcp_tune(struct socket *sock);
51void rds_tcp_nonagle(struct socket *sock);
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52void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp);
53void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp);
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54void rds_tcp_restore_callbacks(struct socket *sock,
55 struct rds_tcp_connection *tc);
56u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
57u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
58u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
59extern struct rds_transport rds_tcp_transport;
467fa153 60void rds_tcp_accept_work(struct sock *sk);
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61
62/* tcp_connect.c */
b04e8554 63int rds_tcp_conn_path_connect(struct rds_conn_path *cp);
226f7a7d 64void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn);
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65void rds_tcp_state_change(struct sock *sk);
66
67/* tcp_listen.c */
467fa153 68struct socket *rds_tcp_listen_init(struct net *);
b21dd450 69void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor);
676d2369 70void rds_tcp_listen_data_ready(struct sock *sk);
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71int rds_tcp_accept_one(struct socket *sock);
72int rds_tcp_keepalive(struct socket *sock);
a93d01f5 73void *rds_tcp_listen_sock_def_readable(struct net *net);
c14b0366 74void rds_tcp_set_linger(struct socket *sock);
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75
76/* tcp_recv.c */
ef87b7ea 77int rds_tcp_recv_init(void);
70041088 78void rds_tcp_recv_exit(void);
676d2369 79void rds_tcp_data_ready(struct sock *sk);
2da43c4a 80int rds_tcp_recv_path(struct rds_conn_path *cp);
70041088 81void rds_tcp_inc_free(struct rds_incoming *inc);
c310e72c 82int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);
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83
84/* tcp_send.c */
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85void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp);
86void rds_tcp_xmit_path_complete(struct rds_conn_path *cp);
70041088 87int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
5c3da57d 88 unsigned int hdr_off, unsigned int sg, unsigned int off);
70041088 89void rds_tcp_write_space(struct sock *sk);
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90
91/* tcp_stats.c */
92DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
93#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
94unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
95 unsigned int avail);
96
97#endif