1 #ifndef _RDS_TCP_H 2 #define _RDS_TCP_H 3 4 #define RDS_TCP_PORT 16385 5 6 struct rds_tcp_incoming { 7 struct rds_incoming ti_inc; 8 struct sk_buff_head ti_skb_list; 9 }; 10 11 struct rds_tcp_connection { 12 13 struct list_head t_tcp_node; 14 struct rds_conn_path *t_cpath; 15 /* t_conn_path_lock synchronizes the connection establishment between 16 * rds_tcp_accept_one and rds_tcp_conn_path_connect 17 */ 18 struct mutex t_conn_path_lock; 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 41 struct 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 */ 50 void rds_tcp_tune(struct socket *sock); 51 void rds_tcp_nonagle(struct socket *sock); 52 void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp); 53 void rds_tcp_reset_callbacks(struct socket *sock, struct rds_conn_path *cp); 54 void rds_tcp_restore_callbacks(struct socket *sock, 55 struct rds_tcp_connection *tc); 56 u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc); 57 u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); 58 u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq); 59 extern struct rds_transport rds_tcp_transport; 60 void rds_tcp_accept_work(struct sock *sk); 61 62 /* tcp_connect.c */ 63 int rds_tcp_conn_path_connect(struct rds_conn_path *cp); 64 void rds_tcp_conn_path_shutdown(struct rds_conn_path *conn); 65 void rds_tcp_state_change(struct sock *sk); 66 67 /* tcp_listen.c */ 68 struct socket *rds_tcp_listen_init(struct net *); 69 void rds_tcp_listen_stop(struct socket *); 70 void rds_tcp_listen_data_ready(struct sock *sk); 71 int rds_tcp_accept_one(struct socket *sock); 72 int rds_tcp_keepalive(struct socket *sock); 73 void *rds_tcp_listen_sock_def_readable(struct net *net); 74 75 /* tcp_recv.c */ 76 int rds_tcp_recv_init(void); 77 void rds_tcp_recv_exit(void); 78 void rds_tcp_data_ready(struct sock *sk); 79 int rds_tcp_recv_path(struct rds_conn_path *cp); 80 void rds_tcp_inc_free(struct rds_incoming *inc); 81 int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iov_iter *to); 82 83 /* tcp_send.c */ 84 void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp); 85 void rds_tcp_xmit_path_complete(struct rds_conn_path *cp); 86 int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, 87 unsigned int hdr_off, unsigned int sg, unsigned int off); 88 void rds_tcp_write_space(struct sock *sk); 89 90 /* tcp_stats.c */ 91 DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats); 92 #define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member) 93 unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter, 94 unsigned int avail); 95 96 #endif 97