On 08/04/2018 07:06 AM, Jakub Kicinski wrote: > Add support for adjust_tail. There are no FW changes needed but add > a FW capability just in case there would be any issue with previously > released FW, or we will have to change the ABI in the future. > > The helper is trivial and shouldn't be used too often so just inline > the body of the function. We add the delta to locally maintained > packet length register and check for overflow, since add of negative > value must overflow if result is positive. Note that if delta of 0 > would be allowed in the kernel this trick stops working and we need > one more instruction to compare lengths before and after the change. > > Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com> > Reviewed-by: Quentin Monnet <quentin.mon...@netronome.com>
Applied to bpf-next, thanks Jakub!
