LU-9680 net: Netlink improvements

[fs/lustre-release.git] / lnet / utils / routerstat.c

diff --git a/lnet/utils/routerstat.c b/lnet/utils/routerstat.c
index f31f811..547bd56 100644 (file)
--- a/lnet/utils/routerstat.c
+++ b/lnet/utils/routerstat.c
@@ -15,11 +15,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -31,17 +27,20 @@
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
-#include <stdio.h>
 #include <errno.h>
-#include <string.h>
 #include <fcntl.h>
-#include <unistd.h>
+#include <glob.h>
+#include <limits.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 #include <sys/time.h>
+#include <unistd.h>
+
+#include <libcfs/util/param.h>
 
 double
 timenow ()
@@ -168,28 +167,36 @@ do_stat (int fd)
    last = timenow();
 }
 
-int main (int argc, char **argv)
+int main(int argc, char **argv)
 {
-   int  interval = 0;
-   int  fd;
-
-   if (argc > 1)
-      interval = atoi (argv[1]);
-
-   fd = open ("/proc/sys/lnet/stats", O_RDONLY);
-   if (fd < 0)
-   {
-      fprintf (stderr, "Can't open stat: %s\n", strerror (errno));
-      return (1);
-   }
-
-   do_stat (fd);
-   if (interval == 0)
-      return (0);
-
-   for (;;)
-   {
-      sleep (interval);
-      do_stat (fd);
-   }
+       int interval = 0;
+       glob_t path;
+       int fd;
+
+       if (argc > 1)
+               interval = atoi(argv[1]);
+
+       if (cfs_get_param_paths(&path, "stats") != 0) {
+               fprintf(stderr, "LNet stats not available\n");
+               return 1;
+       }
+
+       fd = open(path.gl_pathv[0], O_RDONLY);
+       if (fd < 0) {
+               fprintf(stderr, "failed to open '%s': %s\n", path.gl_pathv[0],
+                       strerror(errno));
+               cfs_free_param_data(&path);
+               return 1;
+       }
+       cfs_free_param_data(&path);
+
+       do_stat(fd);
+       if (interval == 0)
+               return 0;
+
+       while (1) {
+               sleep(interval);
+               do_stat(fd);
+       }
+       /* Never reached */
 }