warn("getifaddrs failed");
return NULL;
}
+ oldrxbytes = rxbytes;
for (ifa = ifal; ifa; ifa = ifa->ifa_next) {
if (!strcmp(ifa->ifa_name, interface) &&
(ifd = (struct if_data *)ifa->ifa_data)) {
warn("getifaddrs failed");
return NULL;
}
+ oldtxbytes = txbytes;
for (ifa = ifal; ifa; ifa = ifa->ifa_next) {
if (!strcmp(ifa->ifa_name, interface) &&
(ifd = (struct if_data *)ifa->ifa_data)) {