Messages in this thread | | | Date | Thu, 21 Feb 2002 23:45:25 -0700 | From | Ben Greear <> | Subject | Re: is CONFIG_PACKET_MMAP always a win? |
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David S. Miller wrote:
> 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/
And if you can figure out how to do c, and feel like sharing, please do let me know! Documentation is a bit sparse..at least wherever I've been looking.
Enjoy, Ben
-- Ben Greear <greearb@candelatech.com> <Ben_Greear AT excite.com> President of Candela Technologies Inc http://www.candelatech.com ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear
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