On Tue, Mar 24, 2020 at 05:34:34PM +0200, Grygorii Strashko wrote: > I tested both ways and kept this version as i'v not seen any degradation, > but, of course, i'll redo the test (or may be you can advise what test to run). Measure the time delay from when the frame arrives in the stack until that frame+RxTimestamp arrives in the application. I expect the round about way via kthread takes longer. > My thoughts were - network stack might not immediately deliver packet to the application The network stack always delivers the packet, but you artificially delay that delivery by calling netif_receive_skb() later on from cpts_match_rx_ts(). > and PTP worker can be tuned (pri and smp_affinity), That won't avoid the net softirq. > resulted code will be more structured, I am afraid people will copy this pattern in new drivers. It really does not make much sense. Thanks, Richard
