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1 | /* |
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 | |
53 | struct 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 | |
64 | enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_EFF, RX_MAX }; |
65 | |
66 | /* per device receive filters linked at dev->ml_priv */ |
67 | struct dev_rcv_lists { |
68 | struct hlist_head rx[RX_MAX]; |
69 | struct hlist_head rx_sff[0x800]; |
70 | int remove_on_zero_entries; |
71 | int entries; |
72 | }; |
73 | |
74 | /* statistic structures */ |
75 | |
76 | /* can be reset e.g. by can_init_stats() */ |
77 | struct s_stats { |
78 | unsigned long jiffies_init; |
79 | |
80 | unsigned long rx_frames; |
81 | unsigned long tx_frames; |
82 | unsigned long matches; |
83 | |
84 | unsigned long total_rx_rate; |
85 | unsigned long total_tx_rate; |
86 | unsigned long total_rx_match_ratio; |
87 | |
88 | unsigned long current_rx_rate; |
89 | unsigned long current_tx_rate; |
90 | unsigned long current_rx_match_ratio; |
91 | |
92 | unsigned long max_rx_rate; |
93 | unsigned long max_tx_rate; |
94 | unsigned long max_rx_match_ratio; |
95 | |
96 | unsigned long rx_frames_delta; |
97 | unsigned long tx_frames_delta; |
98 | unsigned long matches_delta; |
99 | }; |
100 | |
101 | /* persistent statistics */ |
102 | struct s_pstats { |
103 | unsigned long stats_reset; |
104 | unsigned long user_reset; |
105 | unsigned long rcv_entries; |
106 | unsigned long rcv_entries_max; |
107 | }; |
108 | |
109 | /* function prototypes for the CAN networklayer procfs (proc.c) */ |
110 | extern void can_init_proc(void); |
111 | extern void can_remove_proc(void); |
112 | extern void can_stat_update(unsigned long data); |
113 | |
114 | /* structures and variables from af_can.c needed in proc.c for reading */ |
115 | extern struct timer_list can_stattimer; /* timer for statistics update */ |
116 | extern struct s_stats can_stats; /* packet statistics */ |
117 | extern struct s_pstats can_pstats; /* receive list statistics */ |
118 | extern struct hlist_head can_rx_dev_list; /* rx dispatcher structures */ |
119 | |
120 | #endif /* AF_CAN_H */ |
121 |
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