Ben Hutchings wrote:

quoted

+                        dev = dev_get_by_name(net,devname);
+                        if (dev) {
+                                if (dev->get_stats) {
+                                        struct net_device_stats *stats =
+                                               dev->get_stats(dev);
+                                        memset(stats,0,
+                                               sizeof(struct 
net_device_stats));

This doesn't work for devices that generate the stats (for
example by reading them from the hardware) in ->get_stats().