diff options
Diffstat (limited to '')
| -rw-r--r-- | net/rds/tcp.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/net/rds/tcp.h b/net/rds/tcp.h new file mode 100644 index 000000000..4620549ec --- /dev/null +++ b/net/rds/tcp.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _RDS_TCP_H +#define _RDS_TCP_H + +#define RDS_TCP_PORT 16385 + +struct rds_tcp_incoming { + struct rds_incoming ti_inc; + struct sk_buff_head ti_skb_list; +}; + +struct rds_tcp_connection { + + struct list_head t_tcp_node; + bool t_tcp_node_detached; + struct rds_conn_path *t_cpath; + /* t_conn_path_lock synchronizes the connection establishment between + * rds_tcp_accept_one and rds_tcp_conn_path_connect + */ + struct mutex t_conn_path_lock; + struct socket *t_sock; + void *t_orig_write_space; + void *t_orig_data_ready; + void *t_orig_state_change; + + struct rds_tcp_incoming *t_tinc; + size_t t_tinc_hdr_rem; + size_t t_tinc_data_rem; + + /* XXX error report? */ + struct work_struct t_conn_w; + struct work_struct t_send_w; + struct work_struct t_down_w; + struct work_struct t_recv_w; + + /* for info exporting only */ + struct list_head t_list_item; + u32 t_last_sent_nxt; + u32 t_last_expected_una; + u32 t_last_seen_una; +}; + +struct rds_tcp_statistics { + uint64_t s_tcp_data_ready_calls; + uint64_t s_tcp_write_space_calls; + uint64_t s_tcp_sndbuf_full; + uint64_t s_tcp_connect_raced; + uint64_t s_tcp_listen_closed_stale; +}; + +/* tcp.c */ +void rds_tcp_tune(struct socket *sock); +void rds_tcp_nonagle(struct socket *sock); +void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp); +void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp); +void rds_tcp_restore_callbacks(struct socket *sock, + struct rds_tcp_connection *tc); +u32 rds_tcp_write_seq(struct rds_tcp_connection *tc); +u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); +u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq); +extern struct rds_transport rds_tcp_transport; +void rds_tcp_accept_work(struct sock *sk); +int rds_tcp_laddr_check(struct net *net, const struct in6_addr *addr, + __u32 scope_id); +/* tcp_connect.c */ +int rds_tcp_conn_path_connect(struct rds_conn_path *cp); +void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); +void rds_tcp_state_change(struct sock *sk); + +/* tcp_listen.c */ +struct socket *rds_tcp_listen_init(struct net *net, bool isv6); +void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor); +void rds_tcp_listen_data_ready(struct sock *sk); +int rds_tcp_accept_one(struct socket *sock); +int rds_tcp_keepalive(struct socket *sock); +void *rds_tcp_listen_sock_def_readable(struct net *net); +void rds_tcp_set_linger(struct socket *sock); + +/* tcp_recv.c */ +int rds_tcp_recv_init(void); +void rds_tcp_recv_exit(void); +void rds_tcp_data_ready(struct sock *sk); +int rds_tcp_recv_path(struct rds_conn_path *cp); +void rds_tcp_inc_free(struct rds_incoming *inc); +int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); + +/* tcp_send.c */ +void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp); +void rds_tcp_xmit_path_complete(struct rds_conn_path *cp); +int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, + unsigned int hdr_off, unsigned int sg, unsigned int off); +void rds_tcp_write_space(struct sock *sk); + +/* tcp_stats.c */ +DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats); +#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member) +unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter, + unsigned int avail); + +#endif |