blob: 18f91e37cc30656308f84f109f6b7bff00771d92 [file] [log] [blame]
Oliver Hartkopp0d665482007-11-16 15:52:17 -08001/*
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 * Send feedback to <socketcan-users@lists.berlios.de>
39 *
40 */
41
42#ifndef AF_CAN_H
43#define AF_CAN_H
44
45#include <linux/skbuff.h>
46#include <linux/netdevice.h>
47#include <linux/list.h>
48#include <linux/rcupdate.h>
49#include <linux/can.h>
50
51/* af_can rx dispatcher structures */
52
53struct receiver {
54 struct hlist_node list;
55 struct rcu_head rcu;
56 canid_t can_id;
57 canid_t mask;
58 unsigned long matches;
59 void (*func)(struct sk_buff *, void *);
60 void *data;
61 char *ident;
62};
63
64enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_EFF, RX_MAX };
65
66struct dev_rcv_lists {
67 struct hlist_node list;
68 struct rcu_head rcu;
69 struct net_device *dev;
70 struct hlist_head rx[RX_MAX];
71 struct hlist_head rx_sff[0x800];
72 int remove_on_zero_entries;
73 int entries;
74};
75
76/* statistic structures */
77
78/* can be reset e.g. by can_init_stats() */
79struct s_stats {
80 unsigned long jiffies_init;
81
82 unsigned long rx_frames;
83 unsigned long tx_frames;
84 unsigned long matches;
85
86 unsigned long total_rx_rate;
87 unsigned long total_tx_rate;
88 unsigned long total_rx_match_ratio;
89
90 unsigned long current_rx_rate;
91 unsigned long current_tx_rate;
92 unsigned long current_rx_match_ratio;
93
94 unsigned long max_rx_rate;
95 unsigned long max_tx_rate;
96 unsigned long max_rx_match_ratio;
97
98 unsigned long rx_frames_delta;
99 unsigned long tx_frames_delta;
100 unsigned long matches_delta;
101};
102
103/* persistent statistics */
104struct s_pstats {
105 unsigned long stats_reset;
106 unsigned long user_reset;
107 unsigned long rcv_entries;
108 unsigned long rcv_entries_max;
109};
110
111/* function prototypes for the CAN networklayer procfs (proc.c) */
112extern void can_init_proc(void);
113extern void can_remove_proc(void);
114extern void can_stat_update(unsigned long data);
115
116/* structures and variables from af_can.c needed in proc.c for reading */
117extern struct timer_list can_stattimer; /* timer for statistics update */
118extern struct s_stats can_stats; /* packet statistics */
119extern struct s_pstats can_pstats; /* receive list statistics */
120extern struct hlist_head can_rx_dev_list; /* rx dispatcher structures */
121
122#endif /* AF_CAN_H */