-/*
- * $Id$
- */
-
/*
* canbusload.c
*
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
- * Send feedback to <socketcan-users@lists.berlios.de>
+ * Send feedback to <linux-can@vger.kernel.org>
*
*/
#include <linux/can/raw.h>
#include "terminal.h"
+#include "canframelen.h"
#define MAXSOCK 16 /* max. number of CAN interfaces given on the cmdline */
extern int optind, opterr, optopt;
static struct {
- char devname[IFNAMSIZ+1];
- unsigned int bitrate;
- unsigned int recv_frames;
- unsigned int recv_bits_total;
- unsigned int recv_bits_payload;
+ char devname[IFNAMSIZ+1];
+ unsigned int bitrate;
+ unsigned int recv_frames;
+ unsigned int recv_bits_total;
+ unsigned int recv_bits_payload;
} stat[MAXSOCK+1];
static int max_devname_len; /* to prevent frazzled device name output */
static unsigned char timestamp;
static unsigned char color;
static unsigned char bargraph;
+static enum cfl_mode mode = CFL_WORSTCASE;
static char *prg;
void print_usage(char *prg)
{
- fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
- fprintf(stderr, " (use CTRL-C to terminate %s)\n\n", prg);
- fprintf(stderr, "Options: -t (show current time on the first line)\n");
- fprintf(stderr, " -c (colorize lines)\n");
- fprintf(stderr, " -b (show bargraph in %d%% resolution)\n", PERCENTRES);
- fprintf(stderr, " -r (redraw the terminal - similar to top)\n");
- fprintf(stderr, "\n");
- fprintf(stderr, "Up to %d CAN interfaces with mandatory bitrate can be specified on the \n", MAXSOCK);
- fprintf(stderr, "commandline in the form: <ifname>@<bitrate>\n\n");
- fprintf(stderr, "The bitrate is mandatory as it is needed to know the CAN bus bitrate to\n");
- fprintf(stderr, "calcultate the bus load percentage based on the received CAN frames.\n");
- fprintf(stderr, "For each given interface the data is presented in one line which contains:\n\n");
- fprintf(stderr, "(interface) (received CAN frames) (used bits total) (used bits for payload)\n");
- fprintf(stderr, "\nExample:\n");
- fprintf(stderr, "\nuser$> canbusload can0@100000 can1@500000 can2@500000 can3@500000 -r -t -b -c\n\n");
- fprintf(stderr, "%s 2008-05-27 15:18:49\n", prg);
- fprintf(stderr, " can0@100000 805 74491 36656 74%% |XXXXXXXXXXXXXX......|\n");
- fprintf(stderr, " can1@500000 796 75140 37728 15%% |XXX.................|\n");
- fprintf(stderr, " can2@500000 0 0 0 0%% |....................|\n");
- fprintf(stderr, " can3@500000 47 4633 2424 0%% |....................|\n");
- fprintf(stderr, "\n");
+ fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
+ fprintf(stderr, " (use CTRL-C to terminate %s)\n\n", prg);
+ fprintf(stderr, "Options: -t (show current time on the first line)\n");
+ fprintf(stderr, " -c (colorize lines)\n");
+ fprintf(stderr, " -b (show bargraph in %d%% resolution)\n", PERCENTRES);
+ fprintf(stderr, " -r (redraw the terminal - similar to top)\n");
+ fprintf(stderr, " -i (ignore bitstuffing in bandwidth calculation)\n");
+ fprintf(stderr, " -e (exact calculation of stuffed bits)\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Up to %d CAN interfaces with mandatory bitrate can be specified on the \n", MAXSOCK);
+ fprintf(stderr, "commandline in the form: <ifname>@<bitrate>\n\n");
+ fprintf(stderr, "The bitrate is mandatory as it is needed to know the CAN bus bitrate to\n");
+ fprintf(stderr, "calcultate the bus load percentage based on the received CAN frames.\n");
+ fprintf(stderr, "Due to the bitstuffing estimation the calculated busload may exceed 100%%.\n");
+ fprintf(stderr, "For each given interface the data is presented in one line which contains:\n\n");
+ fprintf(stderr, "(interface) (received CAN frames) (used bits total) (used bits for payload)\n");
+ fprintf(stderr, "\nExample:\n");
+ fprintf(stderr, "\nuser$> canbusload can0@100000 can1@500000 can2@500000 can3@500000 -r -t -b -c\n\n");
+ fprintf(stderr, "%s 2014-02-01 21:13:16 (worst case bitstuffing)\n", prg);
+ fprintf(stderr, " can0@100000 805 74491 36656 74%% |XXXXXXXXXXXXXX......|\n");
+ fprintf(stderr, " can1@500000 796 75140 37728 15%% |XXX.................|\n");
+ fprintf(stderr, " can2@500000 0 0 0 0%% |....................|\n");
+ fprintf(stderr, " can3@500000 47 4633 2424 0%% |....................|\n");
+ fprintf(stderr, "\n");
}
void sigterm(int signo)
{
- exit(0);
+ exit(0);
}
void printstats(int signo)
{
- int i, j, percent;
+ int i, j, percent;
+
+ if (redraw)
+ printf("%s", CSR_HOME);
- if (redraw)
- printf("%s", CSR_HOME);
+ if (timestamp) {
+ time_t currtime;
+ struct tm now;
- if (timestamp) {
- time_t currtime;
- struct tm now;
+ if (time(&currtime) == (time_t)-1) {
+ perror("time");
+ exit(1);
+ }
- if (time(&currtime) == (time_t)-1) {
- perror("time");
- exit(1);
+ localtime_r(&currtime, &now);
+
+ printf("%s %04d-%02d-%02d %02d:%02d:%02d ",
+ prg,
+ now.tm_year + 1900,
+ now.tm_mon + 1,
+ now.tm_mday,
+ now.tm_hour,
+ now.tm_min,
+ now.tm_sec);
+
+ switch (mode) {
+
+ case CFL_NO_BITSTUFFING:
+ /* plain bit calculation without bitstuffing */
+ printf("(ignore bitstuffing)\n");
+ break;
+
+ case CFL_WORSTCASE:
+ /* worst case estimation - see above */
+ printf("(worst case bitstuffing)\n");
+ break;
+
+ case CFL_EXACT:
+ /* exact calculation of stuffed bits based on frame content and CRC */
+ printf("(exact bitstuffing)\n");
+ break;
+
+ default:
+ printf("(unknown bitstuffing)\n");
+ break;
+ }
}
- localtime_r(&currtime, &now);
-
- printf("%s %04d-%02d-%02d %02d:%02d:%02d\n",
- prg,
- now.tm_year + 1900,
- now.tm_mon + 1,
- now.tm_mday,
- now.tm_hour,
- now.tm_min,
- now.tm_sec);
- }
-
- for (i=0; i<currmax; i++) {
-
- if (color)
- if (i%2)
- printf("%s", FGRED);
- else
- printf("%s", FGBLUE);
-
- if (stat[i].bitrate)
- percent = (stat[i].recv_bits_total*100)/stat[i].bitrate;
- else
- percent = 0;
-
- printf(" %*s@%-*d %4d %6d %6d %3d%%",
- max_devname_len, stat[i].devname,
- max_bitrate_len, stat[i].bitrate,
- stat[i].recv_frames,
- stat[i].recv_bits_total,
- stat[i].recv_bits_payload,
- percent);
-
- if (bargraph) {
-
- printf(" |");
-
- for (j=0; j < NUMBAR; j++){
- if (j < percent/PERCENTRES)
- printf("X");
+ for (i=0; i<currmax; i++) {
+
+ if (color) {
+ if (i%2)
+ printf("%s", FGRED);
+ else
+ printf("%s", FGBLUE);
+ }
+
+ if (stat[i].bitrate)
+ percent = (stat[i].recv_bits_total*100)/stat[i].bitrate;
else
- printf(".");
- }
+ percent = 0;
+
+ printf(" %*s@%-*d %5d %7d %6d %3d%%",
+ max_devname_len, stat[i].devname,
+ max_bitrate_len, stat[i].bitrate,
+ stat[i].recv_frames,
+ stat[i].recv_bits_total,
+ stat[i].recv_bits_payload,
+ percent);
+
+ if (bargraph) {
+
+ printf(" |");
+
+ if (percent > 100)
+ percent = 100;
+
+ for (j=0; j < NUMBAR; j++){
+ if (j < percent/PERCENTRES)
+ printf("X");
+ else
+ printf(".");
+ }
- printf("|");
- }
+ printf("|");
+ }
- if (color)
- printf("%s", ATTRESET);
+ if (color)
+ printf("%s", ATTRESET);
- printf("\n");
+ printf("\n");
- stat[i].recv_frames = 0;
- stat[i].recv_bits_total = 0;
- stat[i].recv_bits_payload = 0;
- }
+ stat[i].recv_frames = 0;
+ stat[i].recv_bits_total = 0;
+ stat[i].recv_bits_payload = 0;
+ }
- printf("\n");
+ printf("\n");
+ fflush(stdout);
- alarm(1);
+ alarm(1);
}
int main(int argc, char **argv)
{
- fd_set rdfs;
- int s[MAXSOCK];
-
- int opt;
- char *ptr, *nptr;
- struct sockaddr_can addr;
- struct can_frame frame;
- int nbytes, i;
- struct ifreq ifr;
- sigset_t sigmask, savesigmask;
-
- signal(SIGTERM, sigterm);
- signal(SIGHUP, sigterm);
- signal(SIGINT, sigterm);
-
- signal(SIGALRM, printstats);
-
- prg = basename(argv[0]);
-
- while ((opt = getopt(argc, argv, "rtbch?")) != -1) {
- switch (opt) {
- case 'r':
- redraw = 1;
- break;
-
- case 't':
- timestamp = 1;
- break;
-
- case 'b':
- bargraph = 1;
- break;
-
- case 'c':
- color = 1;
- break;
-
- default:
- print_usage(prg);
- exit(1);
- break;
+ fd_set rdfs;
+ int s[MAXSOCK];
+
+ int opt;
+ char *ptr, *nptr;
+ struct sockaddr_can addr;
+ struct can_frame frame;
+ int nbytes, i;
+ struct ifreq ifr;
+ sigset_t sigmask, savesigmask;
+
+ signal(SIGTERM, sigterm);
+ signal(SIGHUP, sigterm);
+ signal(SIGINT, sigterm);
+
+ signal(SIGALRM, printstats);
+
+ prg = basename(argv[0]);
+
+ while ((opt = getopt(argc, argv, "rtbcieh?")) != -1) {
+ switch (opt) {
+ case 'r':
+ redraw = 1;
+ break;
+
+ case 't':
+ timestamp = 1;
+ break;
+
+ case 'b':
+ bargraph = 1;
+ break;
+
+ case 'c':
+ color = 1;
+ break;
+
+ case 'i':
+ mode = CFL_NO_BITSTUFFING;
+ break;
+
+ case 'e':
+ mode = CFL_EXACT;
+ break;
+
+ default:
+ print_usage(prg);
+ exit(1);
+ break;
+ }
}
- }
- if (optind == argc) {
- print_usage(prg);
- exit(0);
- }
+ if (optind == argc) {
+ print_usage(prg);
+ exit(0);
+ }
- currmax = argc - optind; /* find real number of CAN devices */
+ currmax = argc - optind; /* find real number of CAN devices */
- if (currmax > MAXSOCK) {
- printf("More than %d CAN devices given on commandline!\n", MAXSOCK);
- return 1;
- }
+ if (currmax > MAXSOCK) {
+ printf("More than %d CAN devices given on commandline!\n", MAXSOCK);
+ return 1;
+ }
- for (i=0; i < currmax; i++) {
+ for (i=0; i < currmax; i++) {
- ptr = argv[optind+i];
+ ptr = argv[optind+i];
- nbytes = strlen(ptr);
- if (nbytes >= IFNAMSIZ+sizeof("@1000000")+1) {
- printf("name of CAN device '%s' is too long!\n", ptr);
- return 1;
- }
+ nbytes = strlen(ptr);
+ if (nbytes >= IFNAMSIZ+sizeof("@1000000")+1) {
+ printf("name of CAN device '%s' is too long!\n", ptr);
+ return 1;
+ }
#ifdef DEBUG
- printf("open %d '%s'.\n", i, ptr);
+ printf("open %d '%s'.\n", i, ptr);
#endif
- s[i] = socket(PF_CAN, SOCK_RAW, CAN_RAW);
- if (s[i] < 0) {
- perror("socket");
- return 1;
- }
+ s[i] = socket(PF_CAN, SOCK_RAW, CAN_RAW);
+ if (s[i] < 0) {
+ perror("socket");
+ return 1;
+ }
- nptr = strchr(ptr, '@');
+ nptr = strchr(ptr, '@');
- if (!nptr) {
- print_usage(prg);
- return 1;
- }
+ if (!nptr) {
+ print_usage(prg);
+ return 1;
+ }
- nbytes = nptr - ptr; /* interface name is up the first '@' */
+ nbytes = nptr - ptr; /* interface name is up the first '@' */
- if (nbytes >= IFNAMSIZ) {
- printf("name of CAN device '%s' is too long!\n", ptr);
- return 1;
- }
+ if (nbytes >= IFNAMSIZ) {
+ printf("name of CAN device '%s' is too long!\n", ptr);
+ return 1;
+ }
- strncpy(stat[i].devname, ptr, nbytes);
- memset(&ifr.ifr_name, 0, sizeof(ifr.ifr_name));
- strncpy(ifr.ifr_name, ptr, nbytes);
+ strncpy(stat[i].devname, ptr, nbytes);
+ memset(&ifr.ifr_name, 0, sizeof(ifr.ifr_name));
+ strncpy(ifr.ifr_name, ptr, nbytes);
- if (nbytes > max_devname_len)
- max_devname_len = nbytes; /* for nice printing */
+ if (nbytes > max_devname_len)
+ max_devname_len = nbytes; /* for nice printing */
- stat[i].bitrate = atoi(nptr+1); /* bitrate is placed behind the '@' */
+ stat[i].bitrate = atoi(nptr+1); /* bitrate is placed behind the '@' */
- if (!stat[i].bitrate || stat[i].bitrate > 1000000) {
- printf("invalid bitrate for CAN device '%s'!\n", ptr);
- return 1;
- }
+ if (!stat[i].bitrate || stat[i].bitrate > 1000000) {
+ printf("invalid bitrate for CAN device '%s'!\n", ptr);
+ return 1;
+ }
- nbytes = strlen(nptr+1);
- if (nbytes > max_bitrate_len)
- max_bitrate_len = nbytes; /* for nice printing */
+ nbytes = strlen(nptr+1);
+ if (nbytes > max_bitrate_len)
+ max_bitrate_len = nbytes; /* for nice printing */
#ifdef DEBUG
- printf("using interface name '%s'.\n", ifr.ifr_name);
+ printf("using interface name '%s'.\n", ifr.ifr_name);
#endif
- if (ioctl(s[i], SIOCGIFINDEX, &ifr) < 0) {
- perror("SIOCGIFINDEX");
- exit(1);
- }
+ if (ioctl(s[i], SIOCGIFINDEX, &ifr) < 0) {
+ perror("SIOCGIFINDEX");
+ exit(1);
+ }
- addr.can_family = AF_CAN;
- addr.can_ifindex = ifr.ifr_ifindex;
+ addr.can_family = AF_CAN;
+ addr.can_ifindex = ifr.ifr_ifindex;
- if (bind(s[i], (struct sockaddr *)&addr, sizeof(addr)) < 0) {
- perror("bind");
- return 1;
+ if (bind(s[i], (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ perror("bind");
+ return 1;
+ }
}
- }
- alarm(1);
+ alarm(1);
- if (redraw)
- printf("%s", CLR_SCREEN);
+ if (redraw)
+ printf("%s", CLR_SCREEN);
- while (1) {
+ while (1) {
- FD_ZERO(&rdfs);
- for (i=0; i<currmax; i++)
- FD_SET(s[i], &rdfs);
+ FD_ZERO(&rdfs);
+ for (i=0; i<currmax; i++)
+ FD_SET(s[i], &rdfs);
- savesigmask = sigmask;
+ savesigmask = sigmask;
- if (pselect(s[currmax-1]+1, &rdfs, NULL, NULL, NULL, &sigmask) < 0) {
- //perror("pselect");
- sigmask = savesigmask;
- continue;
- }
+ if (pselect(s[currmax-1]+1, &rdfs, NULL, NULL, NULL, &sigmask) < 0) {
+ //perror("pselect");
+ sigmask = savesigmask;
+ continue;
+ }
- for (i=0; i<currmax; i++) { /* check all CAN RAW sockets */
+ for (i=0; i<currmax; i++) { /* check all CAN RAW sockets */
- if (FD_ISSET(s[i], &rdfs)) {
+ if (FD_ISSET(s[i], &rdfs)) {
- nbytes = read(s[i], &frame, sizeof(struct can_frame));
+ nbytes = read(s[i], &frame, sizeof(struct can_frame));
- if (nbytes < 0) {
- perror("read");
- return 1;
- }
+ if (nbytes < 0) {
+ perror("read");
+ return 1;
+ }
- if (nbytes < sizeof(struct can_frame)) {
- fprintf(stderr, "read: incomplete CAN frame\n");
- return 1;
- }
+ if (nbytes < sizeof(struct can_frame)) {
+ fprintf(stderr, "read: incomplete CAN frame\n");
+ return 1;
+ }
- stat[i].recv_frames++;
- stat[i].recv_bits_payload += frame.can_dlc*8;
- stat[i].recv_bits_total += frame.can_dlc*8;
- if (frame.can_id & CAN_EFF_FLAG)
- stat[i].recv_bits_total += 67;
- else
- stat[i].recv_bits_total += 47;
- }
+ stat[i].recv_frames++;
+ stat[i].recv_bits_payload += frame.can_dlc*8;
+ stat[i].recv_bits_total += can_frame_length((struct canfd_frame*)&frame,
+ mode, sizeof(frame));
+ }
+ }
}
- }
- for (i=0; i<currmax; i++)
- close(s[i]);
+ for (i=0; i<currmax; i++)
+ close(s[i]);
- return 0;
+ return 0;
}
projects / can-utils.git / blobdiff