Re: [PATCH bpf 0/3] bpf: avoid using/returning file descriptor value zero

2020-06-09 Thread Jesper Dangaard Brouer
On Mon, 8 Jun 2020 18:34:10 -0700 Alexei Starovoitov wrote: > On Mon, Jun 08, 2020 at 06:51:12PM +0200, Jesper Dangaard Brouer wrote: > > Make it easier to handle UAPI/kABI extensions by avoid BPF using/returning > > file descriptor value zero. Use this in recent devmap extension to keep > > olde

Re: [PATCH bpf 0/3] bpf: avoid using/returning file descriptor value zero

2020-06-08 Thread Alexei Starovoitov
On Mon, Jun 08, 2020 at 06:51:12PM +0200, Jesper Dangaard Brouer wrote: > Make it easier to handle UAPI/kABI extensions by avoid BPF using/returning > file descriptor value zero. Use this in recent devmap extension to keep > older applications compatible with newer kernels. > > For special type ma