linux/net/rds/tcp.h
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   1#ifndef _RDS_TCP_H
   2#define _RDS_TCP_H
   3
   4#define RDS_TCP_PORT    16385
   5
   6struct rds_tcp_incoming {
   7        struct rds_incoming     ti_inc;
   8        struct sk_buff_head     ti_skb_list;
   9};
  10
  11struct 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
  37struct 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 */
  46void rds_tcp_tune(struct socket *sock);
  47void rds_tcp_nonagle(struct socket *sock);
  48void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn);
  49void rds_tcp_restore_callbacks(struct socket *sock,
  50                               struct rds_tcp_connection *tc);
  51u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc);
  52u32 rds_tcp_snd_una(struct rds_tcp_connection *tc);
  53u64 rds_tcp_map_seq(struct rds_tcp_connection *tc, u32 seq);
  54extern struct rds_transport rds_tcp_transport;
  55
  56/* tcp_connect.c */
  57int rds_tcp_conn_connect(struct rds_connection *conn);
  58void rds_tcp_conn_shutdown(struct rds_connection *conn);
  59void rds_tcp_state_change(struct sock *sk);
  60
  61/* tcp_listen.c */
  62int rds_tcp_listen_init(void);
  63void rds_tcp_listen_stop(void);
  64void rds_tcp_listen_data_ready(struct sock *sk, int bytes);
  65
  66/* tcp_recv.c */
  67int rds_tcp_recv_init(void);
  68void rds_tcp_recv_exit(void);
  69void rds_tcp_data_ready(struct sock *sk, int bytes);
  70int rds_tcp_recv(struct rds_connection *conn);
  71void rds_tcp_inc_free(struct rds_incoming *inc);
  72int rds_tcp_inc_copy_to_user(struct rds_incoming *inc, struct iovec *iov,
  73                             size_t size);
  74
  75/* tcp_send.c */
  76void rds_tcp_xmit_prepare(struct rds_connection *conn);
  77void rds_tcp_xmit_complete(struct rds_connection *conn);
  78int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm,
  79                 unsigned int hdr_off, unsigned int sg, unsigned int off);
  80void rds_tcp_write_space(struct sock *sk);
  81
  82/* tcp_stats.c */
  83DECLARE_PER_CPU(struct rds_tcp_statistics, rds_tcp_stats);
  84#define rds_tcp_stats_inc(member) rds_stats_inc_which(rds_tcp_stats, member)
  85unsigned int rds_tcp_stats_info_copy(struct rds_info_iterator *iter,
  86                                     unsigned int avail);
  87
  88#endif
  89
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