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
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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.
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25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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 */
104