On 05/26/2016 01:40 PM, Timur Tabi wrote: > Is there an easy way to test my driver's response to a > ndo_tx_timeout() call? That is, force dev_watchdog() to think that a > timeout has occurred? >
One way to do this could be to never reclaim the SKBs you just transmitted which could be achieved by disabling the TX completion interrupt permanently for instance. Alternatively you might stop your tx queue, avoid checking for this condition (netif_tx_queue_stopped..) and still try to push SKBs and transmit them, combining the two should be fairly effective. There could be better ways to test that, though these would at least try to reproduce real world scenarios where transmit flow control is broken. -- Florian
