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Date:      Wed, 05 Nov 2014 19:19:13 +0300
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        "Eric L. Camachat" <eric.camachat@gmail.com>,  freebsd-net@freebsd.org
Subject:   Re: netmap in GENERIC, by default, on HEAD
Message-ID:  <545A4E01.6010404@yandex.ru>
In-Reply-To: <545A4B22.6080001@gmail.com>
References:  <92D22BEA-DDE5-4C6E-855C-B8CACB0319AC@neville-neil.com> <545A47A5.4010601@yandex.ru> <545A4B22.6080001@gmail.com>

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On 05.11.2014 19:06, Eric L. Camachat wrote:
>>> In two weeks I will enable IPSec by default, again in preparation for=
 11.
>=20
>> Hi,
>=20
>> recently we did some IP forwarding tests and the GENERIC kernel is
>> several times faster than GENERIC+IPSEC. Even when IPSEC has no SA.
>=20
>> I didn't do test on vanilla kernel, but our kernel is able forward
>> IPv4/IPv6 on rate close to 8.6 Mpps. The same kernel compiled with IPS=
EC
>> can forward only 180 kpps. I think this problem should be solved befor=
e
>> enabling it in GENERIC.
>=20
> I think this is why we need IPSEC in GENERIC to let more tests involved=
=2E
> Maybe it also helps in kernel SSL encryption (key per IP vs per TCP
> session).

IPSEC had unresolved bugs for years, and now all will be magically
fixed. I think we need some way to enable/disable it on the fly. This
may be a compromise.

--=20
WBR, Andrey V. Elsukov


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