Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP

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Subject: Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
From: Jakub Kicinski <kuba@xxxxxxxxxx>
Date: Mon, 23 Mar 2020 09:54:12 -0700
Cc: Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Martin KaFai Lau <kafai@xxxxxx>, Song Liu <songliubraving@xxxxxx>, Yonghong Song <yhs@xxxxxx>, Andrii Nakryiko <andriin@xxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Jesper Dangaard Brouer <brouer@xxxxxxxxxx>, Lorenz Bauer <lmb@xxxxxxxxxxxxxx>, Andrey Ignatov <rdna@xxxxxx>, Networking <netdev@xxxxxxxxxxxxxxx>, bpf <bpf@xxxxxxxxxxxxxxx>
In-reply-to: <87tv2f48lp.fsf@toke.dk>

On Mon, 23 Mar 2020 12:24:34 +0100 Toke Høiland-Jørgensen wrote:
> Well, my reason for being skeptic about bpf_link and proposing the
> netlink-based API is actually exactly this, but in reverse: With
> bpf_link we will be in the situation that everything related to a netdev
> is configured over netlink *except* XDP.

+1

References:
- [PATCH bpf-next 0/4] XDP: Support atomic replacement of XDP interface attachments
  - From: Toke Høiland-Jørgensen
- [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Toke Høiland-Jørgensen
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Jakub Kicinski
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Toke Høiland-Jørgensen
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Jakub Kicinski
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: John Fastabend
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Andrii Nakryiko
- Re: [PATCH bpf-next 1/4] xdp: Support specifying expected existing program when attaching XDP
  - From: Toke Høiland-Jørgensen

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