On Wed, 21 Jun 2023 at 22:34, Jakub Kicinski <kuba@xxxxxxxxxx> wrote: > > On Wed, 21 Jun 2023 16:15:32 +0200 Magnus Karlsson wrote: > > > Hmm, okay, that sounds pretty tedious :P > > > > Indeed if you had to do it manually ;-). Do not think this max is > > important though, see next answer. > > Can't we add max segs to Lorenzo's XDP info? > include/uapi/linux/netdev.h That should be straight forward. I am just reluctant to add a user interface that might not be necessary. Maciej, how about changing your patch #13 so that we do not add a flag for zc_mb supported or not, but instead we add a flag that gives the user the max number of frags supported in zc mode? A 1 returned would mean that max 1 frag is supported, i.e. mb is not supported. Any number >1 would mean that mb is supported in zc mode for this device and the returned number is the max number of frags supported. This way we would not have to add one more user interface solely for getting the max number of frags supported. What do you think?
