include/net/af_rxrpc.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* RxRPC kernel service interface definitions
   3  *
   4  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   5  * Written by David Howells (dhowells@redhat.com)
   6  */
   7
   8 #ifndef _NET_RXRPC_H
   9 #define _NET_RXRPC_H
  10
  11 #include <linux/rxrpc.h>
  12 #include <linux/ktime.h>
  13
  14 struct key;
  15 struct sock;
  16 struct socket;
  17 struct rxrpc_call;
  18 struct rxrpc_peer;
  19 enum rxrpc_abort_reason;
  20
  21 enum rxrpc_interruptibility {
  22         RXRPC_INTERRUPTIBLE,    /* Call is interruptible */
  23         RXRPC_PREINTERRUPTIBLE, /* Call can be cancelled whilst waiting for a slot */
  24         RXRPC_UNINTERRUPTIBLE,  /* Call should not be interruptible at all */
  25 };
  26
  27 /*
  28  * Debug ID counter for tracing.
  29  */
  30 extern atomic_t rxrpc_debug_id;
  31
  32 typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
  33                                   unsigned long);
  34 typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
  35                                       unsigned long);
  36 typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
  37                                         unsigned long);
  38 typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
  39 typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
  40
  41 void rxrpc_kernel_new_call_notification(struct socket *,
  42                                         rxrpc_notify_new_call_t,
  43                                         rxrpc_discard_new_call_t);
  44 struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
  45                                            struct rxrpc_peer *peer,
  46                                            struct key *key,
  47                                            unsigned long user_call_ID,
  48                                            s64 tx_total_len,
  49                                            u32 hard_timeout,
  50                                            gfp_t gfp,
  51                                            rxrpc_notify_rx_t notify_rx,
  52                                            u16 service_id,
  53                                            bool upgrade,
  54                                            enum rxrpc_interruptibility interruptibility,
  55                                            unsigned int debug_id);
  56 int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
  57                            struct msghdr *, size_t,
  58                            rxrpc_notify_end_tx_t);
  59 int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
  60                            struct iov_iter *, size_t *, bool, u32 *, u16 *);
  61 bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
  62                              u32, int, enum rxrpc_abort_reason);
  63 void rxrpc_kernel_shutdown_call(struct socket *sock, struct rxrpc_call *call);
  64 void rxrpc_kernel_put_call(struct socket *sock, struct rxrpc_call *call);
  65 struct rxrpc_peer *rxrpc_kernel_lookup_peer(struct socket *sock,
  66                                             struct sockaddr_rxrpc *srx, gfp_t gfp);
  67 void rxrpc_kernel_put_peer(struct rxrpc_peer *peer);
  68 struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *peer);
  69 struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call);
  70 const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer);
  71 const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer);
  72 unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *);
  73 int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
  74                                rxrpc_user_attach_call_t, unsigned long, gfp_t,
  75                                unsigned int);
  76 void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
  77 bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
  78 u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *);
  79 void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *,
  80                                unsigned long);
  81
  82 int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
  83 int rxrpc_sock_set_security_keyring(struct sock *, struct key *);
  84
  85 #endif /* _NET_RXRPC_H */