On Mon, Mar 03, 2025 at 10:16:33AM +0100, Kurt Kanzenbach wrote: > The current MQPRIO offload implementation uses the legacy TSN Tx mode. In > this mode the hardware uses four packet buffers and considers queue > priorities. > > In order to harmonize the TAPRIO implementation with MQPRIO, switch to the > regular TSN Tx mode. This mode also uses four packet buffers and considers > queue priorities. In addition to the legacy mode, transmission is always > coupled to Qbv. The driver already has mechanisms to use a dummy schedule > of 1 second with all gates open for ETF. Simply use this for MQPRIO too. > > This reduces code and makes it easier to add support for frame preemption > later. > > While at it limit the netdev_tc calls to MQPRIO only.
Hi Kurt, Can this part be broken out into a separate patch? It seems so to me, but perhaps I'm missing something. The reason that I ask is that this appears to be a good portion of the change, and doing so would make the code changes for main part of the patch, as per the description prior to the line above, clearer IMHO. > > Tested on i225 with real time application using high priority queue, iperf3 > using low priority queue and network TAP device. > > Signed-off-by: Kurt Kanzenbach <[email protected]> ...
