netdev - Re: [PATCH bpf-next V16 0/7] bpf: New approach for BPF MTU handling

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Message-Id: <161317560922.26527.12147444743341964387.git-patchwork-notify@kernel.org>
Date:   Sat, 13 Feb 2021 00:20:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     bpf@...r.kernel.org, netdev@...r.kernel.org,
        borkmann@...earbox.net, alexei.starovoitov@...il.com,
        maze@...gle.com, lmb@...udflare.com, shaun@...era.io,
        lorenzo@...nel.org, marek@...udflare.com, john.fastabend@...il.com,
        kuba@...nel.org, eyal.birger@...il.com, colrack@...il.com
Subject: Re: [PATCH bpf-next V16 0/7] bpf: New approach for BPF MTU handling

Hello:

This series was applied to bpf/bpf-next.git (refs/heads/master):

On Tue, 09 Feb 2021 14:38:04 +0100 you wrote:
> This patchset drops all the MTU checks in TC BPF-helpers that limits
> growing the packet size. This is done because these BPF-helpers doesn't
> take redirect into account, which can result in their MTU check being done
> against the wrong netdev.
> 
> The new approach is to give BPF-programs knowledge about the MTU on a
> netdev (via ifindex) and fib route lookup level. Meaning some BPF-helpers
> are added and extended to make it possible to do MTU checks in the
> BPF-code.
> 
> [...]

Here is the summary with links:
  - [bpf-next,V16,1/7] bpf: Remove MTU check in __bpf_skb_max_len
    https://git.kernel.org/bpf/bpf-next/c/6306c1189e77
  - [bpf-next,V16,2/7] bpf: fix bpf_fib_lookup helper MTU check for SKB ctx
    https://git.kernel.org/bpf/bpf-next/c/2c0a10af688c
  - [bpf-next,V16,3/7] bpf: bpf_fib_lookup return MTU value as output when looked up
    https://git.kernel.org/bpf/bpf-next/c/e1850ea9bd9e
  - [bpf-next,V16,4/7] bpf: add BPF-helper for MTU checking
    https://git.kernel.org/bpf/bpf-next/c/34b2021cc616
  - [bpf-next,V16,5/7] bpf: drop MTU check when doing TC-BPF redirect to ingress
    https://git.kernel.org/bpf/bpf-next/c/5f7d57280c19
  - [bpf-next,V16,6/7] selftests/bpf: use bpf_check_mtu in selftest test_cls_redirect
    https://git.kernel.org/bpf/bpf-next/c/6b8838be7e21
  - [bpf-next,V16,7/7] selftests/bpf: tests using bpf_check_mtu BPF-helper
    https://git.kernel.org/bpf/bpf-next/c/b62eba563229

You are awesome, thank you!
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