candump: Enable HW timestamping before using it

[can-utils.git] / cansend.c

diff --git a/cansend.c b/cansend.c
index aec64a5c9e61af458eafed6980a07ec9050f8e51..b7f800339b521eddd5729860b792a072345ed00a 100644 (file)
--- a/cansend.c
+++ b/cansend.c
@@ -94,13 +94,15 @@ int main(int argc, char **argv)
                return 1;
        }
 
-       addr.can_family = AF_CAN;
-
-       strcpy(ifr.ifr_name, argv[1]);
-       if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
-               perror("SIOCGIFINDEX");
+       strncpy(ifr.ifr_name, argv[1], IFNAMSIZ - 1);
+       ifr.ifr_name[IFNAMSIZ - 1] = '\0';
+       ifr.ifr_ifindex = if_nametoindex(ifr.ifr_name);
+       if (!ifr.ifr_ifindex) {
+               perror("if_nametoindex");
                return 1;
        }
+
+       addr.can_family = AF_CAN;
        addr.can_ifindex = ifr.ifr_ifindex;
 
        if (required_mtu > CAN_MTU) {