30 Lis
2014
30 Lis
'14
16:08
Hi,
don't know if it is the best solution to remove the CRC checksum
entirely. Some weeks ago I wrote the attached patch for OpenWrt. I
couldn't test it because I only use the utilities that come with Knot
DNS and not the server itself. Usually I have quite high quality
standards, so I didn't want send it to the mailing list without testing
but found no time to setup the required test lab yet.
Regards,
Matthias-Christian
On 2014-11-30 11:30, daniel.salzman(a)nic.cz wrote:
Hi,
the dependency on zlib library has been removed in the master branch.
Dan
On 2014-11-29 10:07, Ondřej Surý wrote:
Hi Matthias-Christan,
could you please fill this as an issue to:
https://gitlab.labs.nic.cz/labs/knot
It's very easy for email to get lost and I think your ideas are worth
doing / considering.
Cheers,
--
Ondřej Surý -- Chief Science Officer
-------------------------------------------
CZ.NIC, z.s.p.o. -- Laboratoře CZ.NIC
Americka 23, 120 00 Praha 2, Czech Republic
mailto:ondrej.sury@nic.cz http://nic.cz/
-------------------------------------------
----- Original Message -----
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knot-dns-users(a)lists.nic.cz
https://lists.nic.cz/cgi-bin/mailman/listinfo/knot-dns-users From: "Matthias-Christian Ott"
<ott(a)mirix.org>
To: knot-dns-users(a)lists.nic.cz
Sent: Saturday, October 18, 2014 4:57:38 PM
Subject: [knot-dns-users] zlib dependency
Knot DNS depends on zlib to calculate Adler-32
checksums. A comment in
crc.h states that it “should be removed”. I want to use knsupdate on
OpenWRT and would also like to remove the dependency.
Unfortunately, there is no single library that provides only Adler-32
checksums and every examined software either relies on zlib or its
bundled implementation of varying quality and speed. Other projects seem
to use CRC32C because there is an instruction to calculate it in the
SSE4.2 instruction set. But again there is no library that only
implements only CRC32C checksums. Switching to CRC32C would also make
the journal format incompatible.
I'm inclined to just copy the reference implementation from RFC 1950 for
my purposes but wanted to check with the upstream maintainers whether
there are any plans or ideas.
It would also be nice if the configure script would have an option to
not include and compile unused functionality from libknot and
libzscanner to minimize binaries sizes.
- Matthias-Christian
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