Displaying 20 results from an estimated 50000 matches similar to: "netloop vs tap"
2010 Dec 09
0
[PATCH linux-2.6.18-xen] make netloop permanent
Hi,
with reference to RH BZ#567540 [0], this patch makes the netloop module permanent (like netback is currently). It reverts parts of xen-unstable c/s 9019:271cb04a4f2b [1] [2] (though that has a typo: "__init clean_loopback", so it was probably changed later too).
The patch fixes the problem of "rmmod netloop" hanging, resulting in blocked tasks and inability to shut down
2006 Sep 20
2
Bug#388486: xen-utils-common: upgrade new 2.6.17-2-xen breaks create domU until modprobe netloop nloopbacks=n
Package: xen-utils-common
Version: 3.0+hg11292-2
Severity: normal
After a recent etch upgrade (2.6.17, xen-3.0.2) I was unable to "xm create" until I
"modprobe netloop nloopbacks=10"
Error was network-bridge couln't create vif interface (backend not found).
brctl addbr ... fails because of no free netloop device.
passing more nloopbacks device to the module fixed the
2009 Apr 21
1
options netloop nloopbacks=<n> ignored
Hi list,
since release 5.3 all kernels ignore
options netloop nloopbacks=<n>
within /etc/modprobe.conf
If <n> is smaller than four there are always four
vifs created.
If <n> is bigger than four the appropriate number
of vifs are created.
Is this expected/new/feature/bug?
Henry
2006 Sep 22
0
Bug#388352: netloop module not loaded
It appears that this bug is caused by the netloop kernel module not
being automatically loaded.
xn
2009 Mar 03
0
Xen networking and netloop
Hi all,
I recently change my Xen 3.1 for a 3.2 and I discover I have to set IP
address on bridge rather than on virtual interfaces.
I used to use bridge set on dummy interface to create virtual networks (not
vlan) inside my Xen system. Without IP on it bridges can be consider as a
hub. dom0 can be outside of these virtual networks.
With IP on bridge, dom0 will exists on these networks, and I
2011 Jan 05
7
Xen Netloop module missing
Hi,
I was hoping someone on this forums could help me out with a problem I
was facing with Xen.
When I compiled the kernel for Xen-3.1.3 using "make world"(I know this
is an old version but I need to use it for some compatibility issues),
the kernel was missing the Xen netloop module. There was no
/kernel/drivers/xen/netback/netloop.ko in the newly compiled kernel. I
think we would
2010 Sep 20
1
Xen 4.0.1, tap vs tap2, blktap2 documentation, and gentoo-xen-kernel problem
Hi,
I''ve been testing Xen 4.0.1 with kernel 2.6.34.5 +
http://gentoo-xen-kernel.googlecode.com/files/xen-patches-2.6.34-4.tar.bz2,
and one of the things that I noticed immediately is there are two
problems with tapdisk and this combination.
First, the syntax "disk = [''tap:tapdisk:aio: ..." no longer works.
When tested with HVM domU, it boots, but there was no disk
2018 Sep 06
0
[PATCH net-next 10/11] tap: accept an array of XDP buffs through sendmsg()
This patch implement TUN_MSG_PTR msg_control type. This type allows
the caller to pass an array of XDP buffs to tuntap through ptr field
of the tun_msg_control. Tap will build skb through those XDP buffers.
This will avoid lots of indirect calls thus improves the icache
utilization and allows to do XDP batched flushing when doing XDP
redirection.
Signed-off-by: Jason Wang <jasowang at
2007 Apr 18
0
[Bridge] Re: brctl, Ethernet Bridging, openvpn, Universal TUN/TAP devices
On Thu, 2 Dec 2004 14:13:33 +0100
ncrfgs <ncrfgs@tin.it> wrote:
> Hi,
>
> I'm using the great 802.1d Ethernet Bridging support via
> brctl along with Universal TUN/TAP devices created with
> openvpn on a GNU system with a vanilla 2.6.8.1 Linux
> kernel.
>
>
> To start it:
>
> /usr/sbin/brctl addbr br${X}
> /sbin/ifconfig brX
2020 Sep 23
0
Re: consuming pre-created tap - with multiqueue
On Tue, Sep 22, 2020 at 01:48:08PM +0200, Miguel Duarte de Mora Barroso wrote:
> Hello,
>
> On KubeVirt, we are trying to pre-create a tap device, then instruct
> libvirt to consume it (via the type=ethernet , managed='no'
> attributes).
>
> It works as expected, **unless** when we create a multi-queue tap device.
>
> The difference when creating the tap
2008 Aug 29
1
Xen HVM and tap:aio
Hello,
I'm wondering if anyone out there is doing tap:aio disk devices on a Xen HVM
vm with any success. Please let me know if you are, and perhaps your
version info and a config file snippet.
I've posted this to the xen-users list, and what I'm trying to do seems to
be correct, works on Ubuntu, Debian, and XenSource; but it doesn't work on
CentOS.
Here's the snippet from my
2014 Dec 15
0
Windows TAP Problems?
You are almost certainly hitting this TAP driver issue:
https://github.com/OpenVPN/tap-windows6/issues/3
There are two possible solutions:
- Downgrade the TAP driver to the old version (the one provided with tinc)
- Upgrade the TAP driver to the fixed version which is included in the
latest OpenVPN installers at
http://openvpn.net/index.php/download/community-downloads.html
Note that I did not
2019 Mar 13
1
[RFC] vhost: select TAP if VHOST is configured
If VHOST_NET is configured but TUN and TAP are not, then the
kernel will build but vhost will not work correctly since it can't
setup the necessary tap device.
A solution is to select it.
Fixes: 9a393b5d5988 ("tap: tap as an independent module")
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
drivers/vhost/Kconfig | 3 ++-
1 file changed, 2
2018 Sep 06
1
[PATCH net-next 10/11] tap: accept an array of XDP buffs through sendmsg()
On Thu, Sep 06, 2018 at 12:05:25PM +0800, Jason Wang wrote:
> This patch implement TUN_MSG_PTR msg_control type. This type allows
> the caller to pass an array of XDP buffs to tuntap through ptr field
> of the tun_msg_control. Tap will build skb through those XDP buffers.
>
> This will avoid lots of indirect calls thus improves the icache
> utilization and allows to do XDP
2020 Jun 30
0
Re: plug pre-created tap devices to libvirt guests
On Mon, Apr 6, 2020 at 4:03 PM Laine Stump <lstump@redhat.com> wrote:
>
> On 4/6/20 9:54 AM, Daniel P. Berrangé wrote:
> > On Mon, Apr 06, 2020 at 03:47:01PM +0200, Miguel Duarte de Mora Barroso wrote:
> >> Hi all,
> >>
> >> I'm aware that it is possible to plug pre-created macvtap devices to
> >> libvirt guests - tracked in RFE [0].
>
2012 Jun 14
0
kvm CLI :: meaning of "vlan=" and "name=" options in -net nic and -net tap
Did not get any response in the CentOS Virt list.
Posting in the CentOS General list hoping that some one here can
provide clarification.
Thx,
-- Arun Khan
---------- Forwarded message ----------
From: Arun Khan
Date: Tue, Jun 12, 2012 at 8:54 PM
Subject: Meaning of "vlan=" and "name=" in Linux KVM
To: CentOS Virt <centos-virt at centos.org>
Greetings KVM gurus,
I
2013 Jan 19
1
Ethernet frame header size of TAP device and apropriate MTU calculation
Hello, all! I have many questions about tap device architecture.
What is a right way to calc mtu on TAP device to avoid fragmentation on
real eth device?
I suppose TAP MTU = 1500-8(UDP)-20(IP)-18(Ethernet) = 1454.
So I'd set 1454 for tap device: "ip link set mtu 1454 dev eth0"
I'm not shure about what is the exact size of ethernet frame header,
which tap device use in switch
2013 May 25
0
Help: Using Pre-created tap interfaces with Libvirt+Xen
Hi All.,
I am not sure if this is possible in xen via Libvirt, but what I
am trying to do is, I want libvirt to launch a VM and attach a pre-created
tap interface to that VM ( I do not want XEN to create one, as I am running
a lot of custom scripts on my tap interface). I also dont want xen to
attach this tap interface to a bridge.
For example, lets say I have created a tap interface
2017 Dec 01
0
[PATCH 3/3] tap: free skb if flags error
On 2017?12?01? 13:54, wexu at redhat.com wrote:
> From: Wei Xu <wexu at redhat.com>
>
> tap_recvmsg() supports accepting skb by msg_control after
> commit 3b4ba04acca8 ("tap: support receiving skb from msg_control"),
> the skb if presented should be freed within the function, otherwise
> it would be leaked.
>
> Signed-off-by: Wei Xu <wexu at
2017 Dec 01
0
[PATCH 3/3] tap: free skb if flags error
On Fri, Dec 01, 2017 at 05:10:38AM -0500, wexu at redhat.com wrote:
> From: Wei Xu <wexu at redhat.com>
>
> tap_recvmsg() supports accepting skb by msg_control after
> commit 3b4ba04acca8 ("tap: support receiving skb from msg_control"),
> the skb if presented should be freed within the function, otherwise
> it would be leaked.
>
> Signed-off-by: Wei Xu