__dev_get_by_name -- find a device by its name
struct net_device * __dev_get_by_name
(const char * name);
Find an interface by name. Must be called under RTNL semaphore
or dev_base_lock. If the name is found a pointer to the device
is returned. If the name is not found then NULL is returned. The
reference counters are not incremented so the caller must be
careful with locks.