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 | |
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 | /* t_conn_path_lock synchronizes the connection establishment between |
18 | * rds_tcp_accept_one and rds_tcp_conn_path_connect |
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 | /* XXX error report? */ |
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 | /* for info exporting only */ |
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 | /* tcp.c */ |
52 | bool rds_tcp_tune(struct socket *sock); |
53 | void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp); |
54 | void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp); |
55 | void rds_tcp_restore_callbacks(struct socket *sock, |
56 | struct rds_tcp_connection *tc); |
57 | u32 rds_tcp_write_seq(struct rds_tcp_connection *tc); |
58 | u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); |
59 | extern struct rds_transport rds_tcp_transport; |
60 | void rds_tcp_accept_work(struct sock *sk); |
61 | int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, |
62 | __u32 scope_id); |
63 | /* tcp_connect.c */ |
64 | int rds_tcp_conn_path_connect(struct rds_conn_path *cp); |
65 | void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); |
66 | void rds_tcp_state_change(struct sock *sk); |
67 | |
68 | /* tcp_listen.c */ |
69 | struct socket *rds_tcp_listen_init(struct net *net, bool isv6); |
70 | void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor); |
71 | void rds_tcp_listen_data_ready(struct sock *sk); |
72 | int rds_tcp_accept_one(struct socket *sock); |
73 | void rds_tcp_keepalive(struct socket *sock); |
74 | void *rds_tcp_listen_sock_def_readable(struct net *net); |
75 | |
76 | /* tcp_recv.c */ |
77 | int rds_tcp_recv_init(void); |
78 | void rds_tcp_recv_exit(void); |
79 | void rds_tcp_data_ready(struct sock *sk); |
80 | int rds_tcp_recv_path(struct rds_conn_path *cp); |
81 | void rds_tcp_inc_free(struct rds_incoming *inc); |
82 | int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); |
83 | |
84 | /* tcp_send.c */ |
85 | void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp); |
86 | void rds_tcp_xmit_path_complete(struct rds_conn_path *cp); |
87 | int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, |
88 | unsigned int hdr_off, unsigned int sg, unsigned int off); |
89 | void rds_tcp_write_space(struct sock *sk); |
90 | |
91 | /* tcp_stats.c */ |
92 | DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats); |
93 | #define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member) |
94 | unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter, |
95 | unsigned int avail); |
96 | |
97 | #endif |
98 | |