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 
19 enum rxrpc_interruptibility {
20 	RXRPC_INTERRUPTIBLE,	/* Call is interruptible */
21 	RXRPC_PREINTERRUPTIBLE,	/* Call can be cancelled whilst waiting for a slot */
22 	RXRPC_UNINTERRUPTIBLE,	/* Call should not be interruptible at all */
23 };
24 
25 /*
26  * Debug ID counter for tracing.
27  */
28 extern atomic_t rxrpc_debug_id;
29 
30 typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
31 				  unsigned long);
32 typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
33 				      unsigned long);
34 typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
35 					unsigned long);
36 typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
37 typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
38 
39 void rxrpc_kernel_new_call_notification(struct socket *,
40 					rxrpc_notify_new_call_t,
41 					rxrpc_discard_new_call_t);
42 struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *,
43 					   struct sockaddr_rxrpc *,
44 					   struct key *,
45 					   unsigned long,
46 					   s64,
47 					   gfp_t,
48 					   rxrpc_notify_rx_t,
49 					   bool,
50 					   enum rxrpc_interruptibility,
51 					   unsigned int);
52 int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
53 			   struct msghdr *, size_t,
54 			   rxrpc_notify_end_tx_t);
55 int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
56 			   struct iov_iter *, size_t *, bool, u32 *, u16 *);
57 bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
58 			     u32, int, const char *);
59 void rxrpc_kernel_end_call(struct socket *, struct rxrpc_call *);
60 void rxrpc_kernel_get_peer(struct socket *, struct rxrpc_call *,
61 			   struct sockaddr_rxrpc *);
62 bool rxrpc_kernel_get_srtt(struct socket *, struct rxrpc_call *, u32 *);
63 int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
64 			       rxrpc_user_attach_call_t, unsigned long, gfp_t,
65 			       unsigned int);
66 void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
67 bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
68 u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *);
69 bool rxrpc_kernel_call_is_complete(struct rxrpc_call *);
70 void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *,
71 			       unsigned long);
72 
73 int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
74 
75 #endif /* _NET_RXRPC_H */
76