CanFestival: drivers/can_lincan/canmsg.h Source File

00001 /* canmsg.h - common kernel-space and user-space CAN message structure
-00002  * Linux CAN-bus device driver.
-00003  * Written by Pavel Pisa - OCERA team member
-00004  * email:pisa@cmp.felk.cvut.cz
-00005  * This software is released under the GPL-License.
-00006  * Version lincan-0.3  17 Jun 2004
-00007  */
-00008 
-00009 #ifndef _CANMSG_T_H
-00010 #define _CANMSG_T_H
-00011 
-00012 #ifdef __KERNEL__
-00013 
-00014 #include <linux/time.h>
-00015 #include <linux/types.h>
-00016 
-00017 #else /* __KERNEL__ */
-00018 
-00019 #include <sys/time.h>
-00020 #include <sys/types.h>
-00021 
-00022 #endif /* __KERNEL__ */
-00023 
-00024 #ifdef __cplusplus
-00025 extern "C" {
-00026 #endif
-00027 
-00028 /*
-00029  * CAN_MSG_VERSION_2 enables new canmsg_t layout compatible with
-00030  * can4linux project from http://www.port.de/
-00031  *
-00032  */
-00033 #define CAN_MSG_VERSION_2
-00034 
-00035 /* Number of data bytes in one CAN message */
-00036 #define CAN_MSG_LENGTH 8
-00037 
-00038 #ifdef CAN_MSG_VERSION_2
-00039 
-00040 typedef struct timeval canmsg_tstamp_t ;
-00041 
-00042 typedef unsigned long canmsg_id_t;
-00043 
-00059 struct canmsg_t {
-00060         int             flags;
-00061         int             cob;
-00062         canmsg_id_t     id;
-00063         canmsg_tstamp_t timestamp;
-00064         unsigned short  length;
-00065         unsigned char   data[CAN_MSG_LENGTH];
-00066 };
-00067 
-00068 #else /*CAN_MSG_VERSION_2*/
-00069 #ifndef PACKED
-00070 #define PACKED __attribute__((packed))
-00071 #endif
-00072 /* Old, deprecated version of canmsg_t structure */
-00073 struct canmsg_t {
-00074         short           flags;
-00075         int             cob;
-00076         canmsg_id_t     id;
-00077         unsigned long   timestamp;
-00078         unsigned int    length;
-00079         unsigned char   data[CAN_MSG_LENGTH];
-00080 } PACKED;
-00081 #endif /*CAN_MSG_VERSION_2*/
-00082 
-00083 typedef struct canmsg_t canmsg_t;
-00084 
-00105 struct canfilt_t {
-00106         int             flags;
-00107         int             queid;
-00108         int             cob;
-00109         canmsg_id_t     id;
-00110         canmsg_id_t     mask;
-00111 };
-00112 
-00113 typedef struct canfilt_t canfilt_t;
-00114 
-00115 /* Definitions to use for canmsg_t and canfilt_t flags */
-00116 #define MSG_RTR   (1<<0)
-00117 #define MSG_OVR   (1<<1)
-00118 #define MSG_EXT   (1<<2)
-00119 #define MSG_LOCAL (1<<3)
-00120 /* If you change above lines, check canque_filtid2internal function */
-00121 
-00122 /* Additional definitions used for canfilt_t only */
-00123 #define MSG_FILT_MASK_SHIFT   8
-00124 #define MSG_RTR_MASK   (MSG_RTR<<MSG_FILT_MASK_SHIFT)
-00125 #define MSG_EXT_MASK   (MSG_EXT<<MSG_FILT_MASK_SHIFT)
-00126 #define MSG_LOCAL_MASK (MSG_LOCAL<<MSG_FILT_MASK_SHIFT)
-00127 #define MSG_PROCESSLOCAL (MSG_OVR<<MSG_FILT_MASK_SHIFT)
-00128 
-00129 /* Can message ID mask */
-00130 #define MSG_ID_MASK ((1l<<29)-1)
-00131 
-00132 #ifdef __cplusplus
-00133 } /* extern "C"*/
-00134 #endif
-00135 
-00136 #endif /*_CANMSG_T_H*/
-