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*/
+