From: Andy Lutomirski <luto@amacapital.net>
To: Daniel Borkmann <daniel@iogearbox.net>
Cc: Andy Lutomirski <luto@kernel.org>,
Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
"Jason A. Donenfeld" <Jason@zx2c4.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Eric Dumazet <edumazet@google.com>,
Eric Biggers <ebiggers3@gmail.com>,
Tom Herbert <tom@herbertland.com>,
"David S. Miller" <davem@davemloft.net>,
Alexei Starovoitov <ast@kernel.org>
Subject: Re: [PATCH v2 7/8] net: Rename TCA*BPF_DIGEST to ..._SHA256
Date: Tue, 10 Jan 2017 19:11:49 -0800 [thread overview]
Message-ID: <CALCETrUHenMS1iomFr7+YEy_M3zaotrWbfMe93=BmzCbzJ0fLw@mail.gmail.com> (raw)
In-Reply-To: <58758169.2020408@iogearbox.net>
On Tue, Jan 10, 2017 at 4:50 PM, Daniel Borkmann <daniel@iogearbox.net> wrote:
> On 01/11/2017 12:24 AM, Andy Lutomirski wrote:
>>
>> This makes it easier to add another digest algorithm down the road if
>> needed. It also serves to force any programs that might have been
>> written against a kernel that had the old field name to notice the
>> change and make any necessary changes.
>>
>> This shouldn't violate any stable API policies, as no released kernel
>> has ever had TCA*BPF_DIGEST.
>
>
> Imho, this and patch 6/8 is not really needed. Should there ever
> another digest alg be used (doubt it), then you'd need a new nl
> attribute and fdinfo line anyway to keep existing stuff intact.
> Nobody made the claim that you can just change this underneath
> and not respecting abi for existing applications when I read from
> above that such apps now will get "forced" to notice a change.
Fair enough. I was more concerned about prerelease iproute2 versions,
but maybe that's a nonissue. I'll drop these two patches.
--Andy
next prev parent reply other threads:[~2017-01-11 3:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-10 23:24 [PATCH v2 0/8] Switch BPF's digest to SHA256 Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 1/8] crypto/sha256: Factor out the parts of base API that don't use shash_desc Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 2/8] crypto/sha256: Export a sha256_{init,update,final}_direct() API Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 3/8] crypto/sha256: Build the SHA256 core separately from the crypto module Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 4/8] bpf: Use SHA256 instead of SHA1 for bpf digests Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 5/8] bpf: Avoid copying the entire BPF program when hashing it Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 6/8] bpf: Rename fdinfo's prog_digest to prog_sha256 Andy Lutomirski
2017-01-10 23:24 ` [PATCH v2 7/8] net: Rename TCA*BPF_DIGEST to ..._SHA256 Andy Lutomirski
2017-01-11 0:50 ` Daniel Borkmann
2017-01-11 3:11 ` Andy Lutomirski [this message]
2017-01-11 9:09 ` Daniel Borkmann
2017-01-11 18:19 ` Andy Lutomirski
2017-01-13 23:08 ` Daniel Borkmann
2017-01-10 23:24 ` [PATCH v2 8/8] crypto/testmgr: Allocate only the required output size for hash tests Andy Lutomirski
2017-01-11 15:13 ` David Laight
2017-01-11 18:10 ` Andy Lutomirski
2017-01-12 7:47 ` Herbert Xu
2017-01-12 7:52 ` Andy Lutomirski
2017-01-12 16:44 ` Herbert Xu
2017-01-11 1:09 ` [PATCH v2 0/8] Switch BPF's digest to SHA256 Alexei Starovoitov
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