linux-kernel - Re: [RFC PATCH 32/33] Add the Xen virtual network device driver.

lists.openwall.net		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 linux-hardening linux-cve-announce 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]

Message-Id: <E1G2pJ3-0003LN-00@gondolin.me.apana.org.au>
Date:	Tue, 18 Jul 2006 23:08:09 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	hadi@...erus.ca
Cc:	arjan@...radead.org, chrisw@...s-sol.org,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com, jeremy@...p.org, ak@...e.de,
	akpm@...l.org, rusty@...tcorp.com.au, zach@...are.com,
	ian.pratt@...source.com, Christian.Limpach@...cam.ac.uk,
	netdev@...r.kernel.org
Subject: Re: [RFC PATCH 32/33] Add the Xen virtual network device driver.

jamal <hadi@...erus.ca> wrote:
>
> I dont think the ifup/ifconfig provide operational status (i.e link
> up/down) - or do they? If they can be made to invoke scripts in such
> a case then we are set.

In fact, that's a very good reason why this shouldn't be in netfront.
Indeed, it shouldn't be in the guest at all.  The reason is that the
guest has no idea whether the physical carrier is present.

It's much better for the host to send the ARP packet on behalf of the
guest since the host knows the carrier status and the guest's MAC
address.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/