unsigned oneattime;
FILE *file;
FILE *histogram;
+ int length;
};
struct options opt = {
.id = 10,
.period_us = 0,
.timeout_ms = 1000,
-
+ .length = 2,
};
int num_interfaces = 0;
struct timespec ts_sent, ts_sent_kern;
struct timespec ts_rx_onwire, ts_rx_onwire_kern;
struct timespec ts_rx_final, ts_rx_final_kern;
+ struct can_frame sent, received;
};
#define MAX_INFOS 10000
struct histogram histogram;
+int can_frame_sprintf(char *buf, struct can_frame *frame)
+{
+ char datastr[17];
+ int i;
+ for (i=0; i<8; i++)
+ sprintf(&datastr[i*2], "%02x", frame->data[i]);
+ sprintf(buf, "id=0x%x, len=%d, data=%s",
+ frame->can_id, frame->can_dlc, datastr);
+}
+
static inline struct msg_info *frame2info(struct can_frame *frame)
{
uint16_t idx;
- if (frame->can_dlc == 2) {
+ if (frame->can_dlc >= 2) {
memcpy(&idx, frame->data, sizeof(idx));
if (idx >= MAX_INFOS)
error(1, 0, "%s idx too high", __FUNCTION__);
- } else
+ } else {
+
error(1, 0, "%s error", __FUNCTION__);
+ }
return &msg_infos[idx];
}
struct timespec diff;
void *local = talloc_new (NULL);
static long num = 0;
+ char sent[64], received[64];
+
+ can_frame_sprintf(sent, &mi->sent);
+ can_frame_sprintf(received, &mi->received);
#define S(ts) tstamp_str(local, &ts)
#define DIFF(a, b) (timespec_subtract(&diff, &b, &a), S(diff))
if (num_interfaces == 2)
- fprintf(f, "%ld: %s -> %s (%s) = %s (%s)\n",
- num, S(mi->ts_sent), S(mi->ts_rx_final_kern), S(mi->ts_rx_final),
+ fprintf(f, "%ld: %s [%s] -> %s (%s) [%s] = %s (%s)\n",
+ num, S(mi->ts_sent), sent, S(mi->ts_rx_final_kern), S(mi->ts_rx_final), received,
DIFF(mi->ts_sent, mi->ts_rx_final_kern),
DIFF(mi->ts_sent, mi->ts_rx_final));
else
- fprintf(f, "%ld: %s -> %s (%s) -> %s (%s) = %s (%s), %s (%s)\n",
- num, S(mi->ts_sent),
- S(mi->ts_rx_onwire_kern), S(mi->ts_rx_onwire),
- S(mi->ts_rx_final_kern), S(mi->ts_rx_final),
- DIFF(mi->ts_sent, mi->ts_rx_onwire_kern),
- DIFF(mi->ts_sent, mi->ts_rx_onwire),
- DIFF(mi->ts_rx_onwire_kern, mi->ts_rx_final_kern),
- DIFF(mi->ts_rx_onwire, mi->ts_rx_final));
+ fprintf(f, "%ld: %s [%s] -> %s (%s) -> %s (%s) [%s] = %s (%s), %s (%s)\n",
+ num, S(mi->ts_sent), sent,
+ S(mi->ts_rx_onwire_kern), S(mi->ts_rx_onwire),
+ S(mi->ts_rx_final_kern), S(mi->ts_rx_final), received,
+ DIFF(mi->ts_sent, mi->ts_rx_onwire_kern),
+ DIFF(mi->ts_sent, mi->ts_rx_onwire),
+ DIFF(mi->ts_rx_onwire_kern, mi->ts_rx_final_kern),
+ DIFF(mi->ts_rx_onwire, mi->ts_rx_final));
#undef S
#undef DIFF
num++;
static inline get_tstamp(struct timespec *ts)
{
- clock_gettime(CLOCK_REALTIME, ts);
+ clock_gettime(CLOCK_MONOTONIC, ts);
}
int send_frame(int socket)
static int curr_msg = -1;
int i;
uint16_t idx;
-
+
+ MEMSET_ZERO(frame);
i = curr_msg+1;
while (msg_infos[i].id != 0 && i != curr_msg) {
i++;
curr_msg = i;
frame.can_id = opt.id;
- frame.can_dlc = 2;
+ if (opt.length < 2)
+ error(1, 0, "Length < 2 is not yet supported");
+ frame.can_dlc = opt.length;
idx = curr_msg;
memcpy(frame.data, &idx, sizeof(idx));
mi = frame2info(&frame);
mi->id = frame.can_id;
mi->length = frame.can_dlc;
get_tstamp(&mi->ts_sent);
+ mi->sent = frame;
ret = write(socket, &frame, sizeof(frame));
return ret;
}
mi = frame2info(&frame);
mi->ts_rx_final_kern = ts_kern;
mi->ts_rx_final = ts_user;
+ mi->received = frame;
if (opt.histogram)
histogram_add(&histogram, get_msg_latency_us(mi));
{ "verbose",'v', POPT_ARG_NONE, NULL, 'v', "Send the next message only when the previous was finally received"},
{ "file", 'f', POPT_ARG_STRING, NULL, 'f', "File where to store results", "filename"},
{ "histogram", 'h', POPT_ARG_STRING, NULL, 'h', "Store histogram in file", "filename"},
+ { "length", 'l', POPT_ARG_INT|POPT_ARGFLAG_SHOW_DEFAULT, &opt.length, 0, "The length of generated messages", "bytes"},
POPT_AUTOHELP
{ NULL, 0, 0, NULL, 0 }
};