From: Wei Liu <wei.liu2@citrix.com>
To: Mohammed Gamal <mgamal@redhat.com>
Cc: <netdev@vger.kernel.org>, <xen-devel@lists.xenproject.org>,
<paul.durrant@citrix.com>, <wei.liu2@citrix.com>,
<linux-kernel@vger.kernel.org>, <vkuznets@redhat.com>,
<otubo@redhat.com>, <cavery@redhat.com>, <cheshi@redhat.com>,
Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>
Subject: Re: [PATCH] xen-netfront, xen-netback: Use correct minimum MTU values
Date: Mon, 16 Oct 2017 16:05:22 +0100 [thread overview]
Message-ID: <20171016150522.nebui653rkjove7r@citrix.com> (raw)
In-Reply-To: <1508160032-21689-1-git-send-email-mgamal@redhat.com>
On Mon, Oct 16, 2017 at 03:20:32PM +0200, Mohammed Gamal wrote:
> RFC791 specifies the minimum MTU to be 68, while xen-net{front|back}
> drivers use a minimum value of 0.
>
> When set MTU to 0~67 with xen_net{front|back} driver, the network
> will become unreachable immediately, the guest can no longer be pinged.
>
> xen_net{front|back} should not allow the user to set this value which causes
> network problems.
>
> Reported-by: Chen Shi <cheshi@redhat.com>
> Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
CC netfront maintainers
next prev parent reply other threads:[~2017-10-16 15:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-16 13:20 Mohammed Gamal
2017-10-16 14:43 ` Eduardo Otubo
2017-10-16 15:05 ` Wei Liu [this message]
2017-10-16 20:19 ` Boris Ostrovsky
2017-10-16 20:22 ` David Miller
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