include/net/af_rxrpc.h

   1 /* RxRPC kernel service interface definitions
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #ifndef _NET_RXRPC_H
  13 #define _NET_RXRPC_H
  14
  15 #include <linux/rxrpc.h>
  16
  17 struct key;
  18 struct sock;
  19 struct socket;
  20 struct rxrpc_call;
  21
  22 /*
  23  * Call completion condition (state == RXRPC_CALL_COMPLETE).
  24  */
  25 enum rxrpc_call_completion {
  26         RXRPC_CALL_SUCCEEDED,           /* - Normal termination */
  27         RXRPC_CALL_REMOTELY_ABORTED,    /* - call aborted by peer */
  28         RXRPC_CALL_LOCALLY_ABORTED,     /* - call aborted locally on error or close */
  29         RXRPC_CALL_LOCAL_ERROR,         /* - call failed due to local error */
  30         RXRPC_CALL_NETWORK_ERROR,       /* - call terminated by network error */
  31         NR__RXRPC_CALL_COMPLETIONS
  32 };
  33
  34 /*
  35  * Debug ID counter for tracing.
  36  */
  37 extern atomic_t rxrpc_debug_id;
  38
  39 typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
  40                                   unsigned long);
  41 typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
  42                                       unsigned long);
  43 typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
  44                                         unsigned long);
  45 typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
  46 typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
  47
  48 void rxrpc_kernel_new_call_notification(struct socket *,
  49                                         rxrpc_notify_new_call_t,
  50                                         rxrpc_discard_new_call_t);
  51 struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *,
  52                                            struct sockaddr_rxrpc *,
  53                                            struct key *,
  54                                            unsigned long,
  55                                            s64,
  56                                            gfp_t,
  57                                            rxrpc_notify_rx_t,
  58                                            bool,
  59                                            unsigned int);
  60 int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
  61                            struct msghdr *, size_t,
  62                            rxrpc_notify_end_tx_t);
  63 int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
  64                            struct iov_iter *, bool, u32 *, u16 *);
  65 bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
  66                              u32, int, const char *);
  67 void rxrpc_kernel_end_call(struct socket *, struct rxrpc_call *);
  68 void rxrpc_kernel_get_peer(struct socket *, struct rxrpc_call *,
  69                            struct sockaddr_rxrpc *);
  70 u64 rxrpc_kernel_get_rtt(struct socket *, struct rxrpc_call *);
  71 int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
  72                                rxrpc_user_attach_call_t, unsigned long, gfp_t,
  73                                unsigned int);
  74 void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
  75 int rxrpc_kernel_retry_call(struct socket *, struct rxrpc_call *,
  76                             struct sockaddr_rxrpc *, struct key *);
  77 int rxrpc_kernel_check_call(struct socket *, struct rxrpc_call *,
  78                             enum rxrpc_call_completion *, u32 *);
  79 u32 rxrpc_kernel_check_life(struct socket *, struct rxrpc_call *);
  80
  81 #endif /* _NET_RXRPC_H */