blob: 8bf2a28301278034f66e81b02650b1bbc15a4eca [file] [log] [blame]
/*
* Copyright (c) 2018 Karsten Koenig
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file Header where utility code can be found for CAN drivers
*/
#ifndef ZEPHYR_DRIVERS_CAN_CAN_UTILS_H_
#define ZEPHYR_DRIVERS_CAN_CAN_UTILS_H_
/**
* @brief Check if a CAN filter matches a CAN frame
*
* @param frame CAN frame.
* @param filter CAN filter.
* @return true if the CAN filter matches the CAN frame, false otherwise
*/
static inline bool can_utils_filter_match(const struct can_frame *frame,
struct can_filter *filter)
{
if (((frame->flags & CAN_FRAME_IDE) != 0) && ((filter->flags & CAN_FILTER_IDE) == 0)) {
return false;
}
if (((frame->flags & CAN_FRAME_RTR) == 0) && (filter->flags & CAN_FILTER_DATA) == 0) {
return false;
}
if (((frame->flags & CAN_FRAME_RTR) != 0) && (filter->flags & CAN_FILTER_RTR) == 0) {
return false;
}
if (((frame->flags & CAN_FRAME_FDF) != 0) && (filter->flags & CAN_FILTER_FDF) == 0) {
return false;
}
if ((frame->id ^ filter->id) & filter->mask) {
return false;
}
return true;
}
#endif /* ZEPHYR_DRIVERS_CAN_CAN_UTILS_H_ */