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canfdtest: can_echo_dut(): check received frame for consistency 

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
pull/224/head
Marc Kleine-Budde 2020-06-22 11:23:12 +02:00
parent e393697112
commit d7f28a0ffe
1 changed files with 29 additions and 0 deletions
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29
canfdtest.c
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@ -197,6 +197,34 @@ static int send_frame(struct can_frame *frame)
return 0;
}
static int check_frame(const struct can_frame *frame)
{
int err = 0;
int i;
if (frame->can_id != CAN_MSG_ID) {
printf("unexpected Message ID 0x%04x!\n", frame->can_id);
err = -1;
}
if (frame->can_dlc != CAN_MSG_LEN) {
printf("unexpected Message length %d!\n", frame->can_dlc);
err = -1;
}
for (i = 1; i < frame->can_dlc; i++) {
if (frame->data[i] != frame->data[i-1]) {
printf("Frame inconsistent!\n");
print_frame(frame, 0);
err = -1;
goto out;
}
}
out:
return err;
}
static void inc_frame(struct can_frame *frame)
{
int i;
@ -221,6 +249,7 @@ static int can_echo_dut(void)
print_frame(&frame, 0);
}
check_frame(&frame);
inc_frame(&frame);
if (send_frame(&frame))
return -1;