tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _RDS_TCP_H
3#define _RDS_TCP_H
4
5#define RDS_TCP_PORT 16385
6
7struct rds_tcp_incoming {
8 struct rds_incoming ti_inc;
9 struct sk_buff_head ti_skb_list;
10};
11
12struct rds_tcp_connection {
13
14 struct list_head t_tcp_node;
15 struct rds_conn_path *t_cpath;
16 /* t_conn_path_lock synchronizes the connection establishment between
17 * rds_tcp_accept_one and rds_tcp_conn_path_connect
18 */
19 struct mutex t_conn_path_lock;
20 struct socket *t_sock;
21 void *t_orig_write_space;
22 void *t_orig_data_ready;
23 void *t_orig_state_change;
24
25 struct rds_tcp_incoming *t_tinc;
26 size_t t_tinc_hdr_rem;
27 size_t t_tinc_data_rem;
28
29 /* XXX error report? */
30 struct work_struct t_conn_w;
31 struct work_struct t_send_w;
32 struct work_struct t_down_w;
33 struct work_struct t_recv_w;
34
35 /* for info exporting only */
36 struct list_head t_list_item;
37 u32 t_last_sent_nxt;
38 u32 t_last_expected_una;
39 u32 t_last_seen_una;
40};
41
42struct rds_tcp_statistics {
43 uint64_t s_tcp_data_ready_calls;
44 uint64_t s_tcp_write_space_calls;
45 uint64_t s_tcp_sndbuf_full;
46 uint64_t s_tcp_connect_raced;
47 uint64_t s_tcp_listen_closed_stale;
48};
49
50/* tcp.c */
51void rds_tcp_tune(struct socket *sock);
52void rds_tcp_nonagle(struct socket *sock);
53void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp);
54void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp);
55void rds_tcp_restore_callbacks(struct socket *sock,
56 struct rds_tcp_connection *tc);
57u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
58u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
59u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
60extern struct rds_transport rds_tcp_transport;
61void rds_tcp_accept_work(struct sock *sk);
62
63/* tcp_connect.c */
64int rds_tcp_conn_path_connect(struct rds_conn_path *cp);
65void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn);
66void rds_tcp_state_change(struct sock *sk);
67
68/* tcp_listen.c */
69struct socket *rds_tcp_listen_init(struct net *);
70void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor);
71void rds_tcp_listen_data_ready(struct sock *sk);
72int rds_tcp_accept_one(struct socket *sock);
73int rds_tcp_keepalive(struct socket *sock);
74void *rds_tcp_listen_sock_def_readable(struct net *net);
75void rds_tcp_set_linger(struct socket *sock);
76
77/* tcp_recv.c */
78int rds_tcp_recv_init(void);
79void rds_tcp_recv_exit(void);
80void rds_tcp_data_ready(struct sock *sk);
81int rds_tcp_recv_path(struct rds_conn_path *cp);
82void rds_tcp_inc_free(struct rds_incoming *inc);
83int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to);
84
85/* tcp_send.c */
86void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp);
87void rds_tcp_xmit_path_complete(struct rds_conn_path *cp);
88int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
89 unsigned int hdr_off, unsigned int sg, unsigned int off);
90void rds_tcp_write_space(struct sock *sk);
91
92/* tcp_stats.c */
93DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
94#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
95unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
96 unsigned int avail);
97
98#endif