From: "David S. Miller" <davem@redhat.com>
To: dank@kegel.com
Cc: linux-kernel@vger.kernel.org, zab@zabbo.net
Subject: Re: is CONFIG_PACKET_MMAP always a win?
Date: Thu, 21 Feb 2002 21:59:25 -0800 (PST) [thread overview]
Message-ID: <20020221.215925.41634293.davem@redhat.com> (raw)
In-Reply-To: <3C75A418.2C848B3F@kegel.com>
In-Reply-To: <3C75A418.2C848B3F@kegel.com>
From: Dan Kegel <dank@kegel.com>
Date: Thu, 21 Feb 2002 17:51:20 -0800
What's the best way to retrieve raw packets from the kernel?
a) use libpcap
...
b) use af_packet
...
c) enable CONFIG_PACKET_MMAP, use PACKET_RX_RING
If I understand it right, b costs one memcpy and one recv, and c costs
two memcpys. Which one wins?
"a" should be doing "c" when it is available in the kernel.
If not, get a newer copy of the libpcap sources, preferably
from Alexey's site:
ftp.inr.ac.ru:/ip-routing/
next prev parent reply other threads:[~2002-02-22 6:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-22 1:51 is CONFIG_PACKET_MMAP always a win? Dan Kegel
2002-02-22 2:33 ` Alan Cox
2002-02-22 5:59 ` David S. Miller [this message]
2002-02-22 6:45 ` Ben Greear
2002-02-22 8:37 ` Gianni Tedesco
2002-02-22 7:04 ` Dan Kegel
2002-02-22 14:04 ` Maciej W. Rozycki
2002-02-22 18:09 ` Jamie Lokier
2002-02-22 18:40 ` Alan Cox
2002-02-22 19:04 ` Jamie Lokier
2002-02-22 19:57 ` Alan Cox
2002-02-22 21:44 ` Mike Fedyk
2002-02-23 0:24 ` Alan Cox
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