1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2 /* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Volkswagen nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * Alternatively, provided that this notice is retained in full, this
18 * software may be distributed under the terms of the GNU General
19 * Public License ("GPL") version 2, in which case the provisions of the
20 * GPL apply INSTEAD OF those given above.
21 *
22 * The provided data structures and external interfaces from this code
23 * are not restricted to be used by modules with a GPL compatible license.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
36 * DAMAGE.
37 *
38 */
39
40 #ifndef AF_CAN_H
41 #define AF_CAN_H
42
43 #include <linux/skbuff.h>
44 #include <linux/netdevice.h>
45 #include <linux/list.h>
46 #include <linux/rcupdate.h>
47 #include <linux/can.h>
48
49 /* af_can rx dispatcher structures */
50
51 struct receiver {
52 struct hlist_node list;
53 canid_t can_id;
54 canid_t mask;
55 unsigned long matches;
56 void (*func)(struct sk_buff *skb, void *data);
57 void *data;
58 char *ident;
59 struct sock *sk;
60 struct rcu_head rcu;
61 };
62
63 /* statistic structures */
64
65 /* can be reset e.g. by can_init_stats() */
66 struct can_pkg_stats {
67 unsigned long jiffies_init;
68
69 unsigned long rx_frames;
70 unsigned long tx_frames;
71 unsigned long matches;
72
73 unsigned long total_rx_rate;
74 unsigned long total_tx_rate;
75 unsigned long total_rx_match_ratio;
76
77 unsigned long current_rx_rate;
78 unsigned long current_tx_rate;
79 unsigned long current_rx_match_ratio;
80
81 unsigned long max_rx_rate;
82 unsigned long max_tx_rate;
83 unsigned long max_rx_match_ratio;
84
85 unsigned long rx_frames_delta;
86 unsigned long tx_frames_delta;
87 unsigned long matches_delta;
88 };
89
90 /* persistent statistics */
91 struct can_rcv_lists_stats {
92 unsigned long stats_reset;
93 unsigned long user_reset;
94 unsigned long rcv_entries;
95 unsigned long rcv_entries_max;
96 };
97
98 /* function prototypes for the CAN networklayer procfs (proc.c) */
99 void can_init_proc(struct net *net);
100 void can_remove_proc(struct net *net);
101 void can_stat_update(struct timer_list *t);
102
103 #endif /* AF_CAN_H */