netdev - Re: [v2,0/2] tools: bpftool: add net attach/detach command to attach XDP prog

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Date:   Thu, 1 Aug 2019 23:26:41 -0700
From:   Y Song <ys114321@...il.com>
To:     "Daniel T. Lee" <danieltimlee@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [v2,0/2] tools: bpftool: add net attach/detach command to attach
 XDP prog

On Thu, Aug 1, 2019 at 1:33 AM Daniel T. Lee <danieltimlee@...il.com> wrote:
>
> Currently, bpftool net only supports dumping progs attached on the
> interface. To attach XDP prog on interface, user must use other tool
> (eg. iproute2). By this patch, with `bpftool net attach/detach`, user
> can attach/detach XDP prog on interface.
>
>     $ ./bpftool prog
>     ...
>     208: xdp  name xdp_prog1  tag ad822e38b629553f  gpl
>       loaded_at 2019-07-28T18:03:11+0900  uid 0
>     ...
>     $ ./bpftool net attach id 208 xdpdrv enp6s0np1
>     $ ./bpftool net
>     xdp:
>     enp6s0np1(5) driver id 208
>     ...
>     $ ./bpftool net detach xdpdrv enp6s0np1
>     $ ./bpftool net
>     xdp:
>     ...
>
> While this patch only contains support for XDP, through `net
> attach/detach`, bpftool can further support other prog attach types.

new bpftool net subcommands are added. I guess doc and bash
completion needs update as well.

>
> XDP attach/detach tested on Mellanox ConnectX-4 and Netronome Agilio.
>
> ---
> Changes in v2:
>   - command 'load/unload' changed to 'attach/detach' for the consistency
>
> Daniel T. Lee (2):
>   tools: bpftool: add net attach command to attach XDP on interface
>   tools: bpftool: add net detach command to detach XDP on interface
>
>  tools/bpf/bpftool/net.c | 160 +++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 159 insertions(+), 1 deletion(-)
>
> --
> 2.20.1
>