lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 02 Mar 2007 13:26:38 -0800 (PST)
From:	David Miller <>
Subject: Re: [PATCH] bridge: avoid ptype_all packet handling

From: Stephen Hemminger <>
Date: Wed, 28 Feb 2007 17:18:46 -0800

> I was measuring bridging/routing performance and noticed this.
> The current code runs the "all packet" type handlers before calling the
> bridge hook.  If an application (like some DHCP clients) is using AF_PACKET,
> this means that each received packet gets run through the Berkeley Packet Filter
> code in sk_run_filter (slow).

I know we closed this out by saying that even though performance
sucks, we can't really apply this without breaking things.

What would be broken is if the DHCP client isn't specifying
a device ifindex when it binds the AF_PACKET socket.  That
would be an easy way to fix this performance problem at the
application level.

The DHCP client should only care about a particular interface's
traffic, the one it wants to listen on.
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists