diff options
Diffstat (limited to 'net/can/af_can.h')
| -rw-r--r-- | net/can/af_can.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/net/can/af_can.h b/net/can/af_can.h new file mode 100644 index 000000000000..18f91e37cc30 --- /dev/null +++ b/net/can/af_can.h | |||
| @@ -0,0 +1,122 @@ | |||
| 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 | struct 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() */ | ||
| 79 | struct 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 */ | ||
| 104 | struct 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) */ | ||
| 112 | extern void can_init_proc(void); | ||
| 113 | extern void can_remove_proc(void); | ||
| 114 | extern void can_stat_update(unsigned long data); | ||
| 115 | |||
| 116 | /* structures and variables from af_can.c needed in proc.c for reading */ | ||
| 117 | extern struct timer_list can_stattimer; /* timer for statistics update */ | ||
| 118 | extern struct s_stats can_stats; /* packet statistics */ | ||
| 119 | extern struct s_pstats can_pstats; /* receive list statistics */ | ||
| 120 | extern struct hlist_head can_rx_dev_list; /* rx dispatcher structures */ | ||
| 121 | |||
| 122 | #endif /* AF_CAN_H */ | ||