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Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random: use SipHash in place of MD5)

From Daniel Borkmann <daniel@iogearbox.net>
Newsgroups linux.kernel
Subject Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random: use SipHash in place of MD5)
Date 2016-12-23 11:30 +0100
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References <sRe6l-3cC-13@gated-at.bofh.it> <sReSJ-3uM-5@gated-at.bofh.it> <sRflM-3Vq-35@gated-at.bofh.it>
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On 12/22/2016 06:25 PM, Andy Lutomirski wrote:
> On Thu, Dec 22, 2016 at 8:59 AM, Hannes Frederic Sowa
[...]
>> I wondered if bpf program loading should have used the module loading
>> infrastructure from the beginning...
>
> That would be way too complicated and would be nasty for the unprivileged cases.

Also, there are users be it privileged or not that don't require to have a full
obj loader from user space, but are fine with just hard-coding parts or all of
the insns in their application. Back then we settled with using fds based on
Andy's suggestion, it has both ups and downs as we saw along the way but worked
okay thus far.

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BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random: use  SipHash in place of MD5) Andy Lutomirski <luto@amacapital.net> - 2016-12-22 17:10 +0100
  Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) "Jason A. Donenfeld" <Jason@zx2c4.com> - 2016-12-22 17:30 +0100
    Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Andy Lutomirski <luto@amacapital.net> - 2016-12-22 18:00 +0100
  Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6]  random: use SipHash in place of MD5) Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-12-22 18:00 +0100
    Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Andy Lutomirski <luto@amacapital.net> - 2016-12-22 18:30 +0100
      Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6]  random: use SipHash in place of MD5) Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-12-22 19:00 +0100
      Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-12-22 20:40 +0100
        Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Andy Lutomirski <luto@kernel.org> - 2016-12-22 21:00 +0100
          Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-12-22 21:10 +0100
      Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Daniel Borkmann <daniel@iogearbox.net> - 2016-12-23 11:30 +0100
    Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) "Jason A. Donenfeld" <Jason@zx2c4.com> - 2016-12-22 19:20 +0100
    Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Daniel Borkmann <daniel@iogearbox.net> - 2016-12-23 11:10 +0100
      Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6]  random: use SipHash in place of MD5) Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-12-23 12:00 +0100
        Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Daniel Borkmann <daniel@iogearbox.net> - 2016-12-23 13:10 +0100
          Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Andy Lutomirski <luto@amacapital.net> - 2016-12-23 17:30 +0100
            Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Andy Lutomirski <luto@amacapital.net> - 2016-12-23 17:50 +0100
              Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) Hannes Frederic Sowa <hannes@stressinduktion.org> - 2016-12-23 19:20 +0100
                Re: BPF hash algo (Re: [kernel-hardening] Re: [PATCH v7 3/6] random:  use SipHash in place of MD5) "Jason A. Donenfeld" <Jason@zx2c4.com> - 2016-12-23 22:20 +0100

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