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_connection *conn; 15 struct socket *t_sock; 16 void *t_orig_write_space; 17 void *t_orig_data_ready; 18 void *t_orig_state_change; 19 20 struct rds_tcp_incoming *t_tinc; 21 size_t t_tinc_hdr_rem; 22 size_t t_tinc_data_rem; 23 24 /* XXX error report? */ 25 struct work_struct t_conn_w; 26 struct work_struct t_send_w; 27 struct work_struct t_down_w; 28 struct work_struct t_recv_w; 29 30 /* for info exporting only */ 31 struct list_head t_list_item; 32 u32 t_last_sent_nxt; 33 u32 t_last_expected_una; 34 u32 t_last_seen_una; 35 }; 36 37 struct rds_tcp_statistics { 38 uint64_t s_tcp_data_ready_calls; 39 uint64_t s_tcp_write_space_calls; 40 uint64_t s_tcp_sndbuf_full; 41 uint64_t s_tcp_connect_raced; 42 uint64_t s_tcp_listen_closed_stale; 43 }; 44 45 /* tcp.c */ 46 void rds_tcp_tune(struct socket *sock); 47 void rds_tcp_nonagle(struct socket *sock); 48 void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn); 49 void rds_tcp_restore_callbacks(struct socket *sock, 50 struct rds_tcp_connection *tc); 51 u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc); 52 u32 rds_tcp_snd_una(struct rds_tcp_connection *tc); 53 u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq); 54 extern struct rds_transport rds_tcp_transport; 55 56 /* tcp_connect.c */ 57 int rds_tcp_conn_connect(struct rds_connection *conn); 58 void rds_tcp_conn_shutdown(struct rds_connection *conn); 59 void rds_tcp_state_change(struct sock *sk); 60 61 /* tcp_listen.c */ 62 int rds_tcp_listen_init(void); 63 void rds_tcp_listen_stop(void); 64 void rds_tcp_listen_data_ready(struct sock *sk, int bytes); 65 66 /* tcp_recv.c */ 67 int rds_tcp_recv_init(void); 68 void rds_tcp_recv_exit(void); 69 void rds_tcp_data_ready(struct sock *sk, int bytes); 70 int rds_tcp_recv(struct rds_connection *conn); 71 void rds_tcp_inc_free(struct rds_incoming *inc); 72 int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iovec *iov, 73 size_t size); 74 75 /* tcp_send.c */ 76 void rds_tcp_xmit_prepare(struct rds_connection *conn); 77 void rds_tcp_xmit_complete(struct rds_connection *conn); 78 int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, 79 unsigned int hdr_off, unsigned int sg, unsigned int off); 80 void rds_tcp_write_space(struct sock *sk); 81 82 /* tcp_stats.c */ 83 DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats); 84 #define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member) 85 unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter, 86 unsigned int avail); 87 88 #endif 89