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 */
86