1
2 #ifndef _RDS_TCP_H
3 #define _RDS_TCP_H
4
5 #define RDS_TCP_PORT 16385
6
7 struct rds_tcp_incoming {
8 struct rds_incoming ti_inc;
9 struct sk_buff_head ti_skb_list;
10 };
11
12 struct rds_tcp_connection {
13
14 struct list_head t_tcp_node;
15 bool t_tcp_node_detached;
16 struct rds_conn_path *t_cpath;
17
18
19
20 struct mutex t_conn_path_lock;
21 struct socket *t_sock;
22 void *t_orig_write_space;
23 void *t_orig_data_ready;
24 void *t_orig_state_change;
25
26 struct rds_tcp_incoming *t_tinc;
27 size_t t_tinc_hdr_rem;
28 size_t t_tinc_data_rem;
29
30
31 struct work_struct t_conn_w;
32 struct work_struct t_send_w;
33 struct work_struct t_down_w;
34 struct work_struct t_recv_w;
35
36
37 struct list_head t_list_item;
38 u32 t_last_sent_nxt;
39 u32 t_last_expected_una;
40 u32 t_last_seen_una;
41 };
42
43 struct rds_tcp_statistics {
44 uint64_t s_tcp_data_ready_calls;
45 uint64_t s_tcp_write_space_calls;
46 uint64_t s_tcp_sndbuf_full;
47 uint64_t s_tcp_connect_raced;
48 uint64_t s_tcp_listen_closed_stale;
49 };
50
51
52 void rds_tcp_tune(struct socket *sock);
53 void rds_tcp_nonagle(struct socket *sock);
54 void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp);
55 void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp);
56 void rds_tcp_restore_callbacks(struct socket *sock,
57 struct rds_tcp_connection *tc);
58 u32 rds_tcp_write_seq(struct rds_tcp_connection *tc);
59 u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
60 u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
61 extern struct rds_transport rds_tcp_transport;
62 void rds_tcp_accept_work(struct sock *sk);
63
64
65 int rds_tcp_conn_path_connect(struct rds_conn_path *cp);
66 void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn);
67 void rds_tcp_state_change(struct sock *sk);
68
69
70 struct socket *rds_tcp_listen_init(struct net *net, bool isv6);
71 void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor);
72 void rds_tcp_listen_data_ready(struct sock *sk);
73 int rds_tcp_accept_one(struct socket *sock);
74 int rds_tcp_keepalive(struct socket *sock);
75 void *rds_tcp_listen_sock_def_readable(struct net *net);
76 void rds_tcp_set_linger(struct socket *sock);
77
78
79 int rds_tcp_recv_init(void);
80 void rds_tcp_recv_exit(void);
81 void rds_tcp_data_ready(struct sock *sk);
82 int rds_tcp_recv_path(struct rds_conn_path *cp);
83 void rds_tcp_inc_free(struct rds_incoming *inc);
84 int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);
85
86
87 void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp);
88 void rds_tcp_xmit_path_complete(struct rds_conn_path *cp);
89 int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
90 unsigned int hdr_off, unsigned int sg, unsigned int off);
91 void rds_tcp_write_space(struct sock *sk);
92
93
94 DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
95 #define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
96 unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
97 unsigned int avail);
98
99 #endif