This is an example command line for a qemu VM with a vtnet interface
connected to a port of a VALE switch called 'vale1':
qemu-system-x86_64 fbsd-head.qcow2 -smp 2 -m 2G -vga std -device
e1000,netdev=mgmt,mac=00:AA:BB:CC:0a:99 -netdev
user,id=mgmt,hostfwd=tcp::20010-:22 -device
Il giorno mar 8 ott 2019 alle ore 11:53 Li-Wen Hsu ha
scritto:
> On Tue, Oct 8, 2019 at 5:49 PM Stefano Garzarella
> wrote:
> >
> > Hi Thomas,
> >
> > On Tue, Oct 8, 2019 at 10:49 AM Thomas Huth wrote:
> > >
> > > FreeBSD offers a package for "netmap", thus let's install it in our
> > >
Yes, indeed.
Netmap is actively maintained on FreeBSD, and QEMU is packaged on FreeBSD
with netmap support enabled.
Also keep in mind that, differently from Linux, the (current) tap driver on
FreeBSD does not support offloads (e.g. IFF_VNET_HDR, TUNSETVNETHDRSIZE and
so on). On the contrary,
Hi,
Yes, we added a static library that to ease application development
(libnetmap.a).
It looks like a configure/Makefile issue. Can you reproduce that?
(I'm CC-ing Giuseppe, who actually added libnetmap).
Cheers,
Vincenzo
Il giorno gio 21 feb 2019 alle ore 10:14 Stefano Garzarella <
Il giorno mar 19 feb 2019 alle ore 07:48 Jason Wang
ha scritto:
>
> On 2019/2/18 下午7:53, Vincenzo Maffione wrote:
> > Hi Jason,
> >Thanks for the quick reply.
> >
> > My PV device (to be open sourced soon) uses the QEMU net backend
> interface,
&
Jason Wang
ha scritto:
>
> On 2019/2/16 上午1:46, Vincenzo Maffione wrote:
> > Hi,
> >I was doing experiments with a custom paravirtualized net device,
> > and I ran into a limitation of the TAP backend. I see from the kernel
> > code that it is not possible to
ng the (zeroed) header on the fly.
However, the function tap_using_vnet_hdr() has an assert() that
explicitly prevents this situation to happen.
This patch removes the assert(), so that net frontends are
free to un-negotiate the header.
Signed-off-by: Vincenzo Maffione
---
net/tap.c | 1 -
1 file chang
in tap_receive_iov()).
However, the tap_using_vnet_hdr() has an assert() that prevents
this situation to happen, and I don't understand why. Maybe it
is a leftover? I tried to remove the assert and by doing that
my paravirtualized device was able to stop using the virtio-net
header.
Vincenzo
also ring->head).
Signed-off-by: Vincenzo Maffione
---
net/netmap.c | 29 +
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/net/netmap.c b/net/netmap.c
index 852106af29..0cc8f545c5 100644
--- a/net/netmap.c
+++ b/net/netmap.c
@@ -159,21 +159,22
Improvements to the netmap backend, mostly to fix the handling of
incomplete multi-slot packets.
This has been tested with and without jumbo frames, using pkt-gen
to send 60, 1500, 5000 or 9000 bytes packets between two VMs connected
through a VALE switch.
Vincenzo Maffione (3):
net: netmap
.
Also don't be verbose when incomplete packets are found.
Signed-off-by: Vincenzo Maffione
---
net/netmap.c | 31 +++
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/net/netmap.c b/net/netmap.c
index 2d11a8f4be..71a8122bdd 100644
--- a/net/netmap.c
+++
Improve code reuse by implementing netmap_receive() with a call
to netmap_receive_iov().
Signed-off-by: Vincenzo Maffione
---
net/netmap.c | 50 +++---
1 file changed, 11 insertions(+), 39 deletions(-)
diff --git a/net/netmap.c b/net/netmap.c
index
In the vhost-user example, a chardev with id chr0 is referenced by the
vhost-user net backend, but the id is not specified in the chardev option.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
qemu-options.hx | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git
the implementation to work properly with all kinds
of netmap ports.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 59 ++-
1 file changed, 38 insertions(+), 21 deletions(-)
diff --git a/net/netmap.c b/net/netmap.c
len to netmap_set_vnet_hdr_len
Vincenzo Maffione (1):
net: netmap: probe netmap interface for virtio-net header
net/netmap.c | 59 ++-
1 file changed, 38 insertions(+), 21 deletions(-)
--
2.7.1
2016-02-24 9:21 GMT+01:00 Jason Wang <jasow...@redhat.com>:
>
>
> On 02/23/2016 04:46 PM, Vincenzo Maffione wrote:
>> Previous implementation of has_ufo, has_vnet_hdr, has_vnet_hdr_len, etc.
>> did not really probe for virtio-net header support for the netmap
>>
in netmap_set_vnet_hdr_len().
Vincenzo Maffione (1):
net: netmap: probe netmap interface for virtio-net header
net/netmap.c | 62 +++-
1 file changed, 40 insertions(+), 22 deletions(-)
--
2.7.1
the implementation to work properly with all kinds
of netmap ports.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 62 +++-
1 file changed, 40 insertions(+), 22 deletions(-)
diff --git a/net/netmap.c b/net/ne
2016-02-18 3:52 GMT+01:00 Jason Wang <jasow...@redhat.com>:
>
>
> On 02/05/2016 06:30 PM, Vincenzo Maffione wrote:
>> Previous implementation of has_ufo, has_vnet_hdr, has_vnet_hdr_len, etc.
>> did not really probe for virtio-net header support for the netmap
>>
probe mechanism, fixing the
implementation of the involved hooks (has_vnet_hdr, has_vnet_hdr_len, has_ufo,
...).
Vincenzo Maffione (1):
net: netmap: probe netmap interface for virtio-net header
net/netmap.c | 70 ++--
1 file changed, 44
the implementation to work properly with all kinds
of netmap ports.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 70 ++--
1 file changed, 44 insertions(+), 26 deletions(-)
diff --git a/net/netmap.c b/net/ne
n be found in the netmap man page and in the netmap API headers.
CHANGELOG:
- dropped patch 2, since it requires further rearrangements on our side.
Vincenzo Maffione (1):
net: netmap: use nm_open() to open netmap ports
net/netmap.c | 97 --
, monitors) and use special modes (e.g. host rings
only, single queue mode, exclusive access).
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 97
1 file changed, 32 insertions(+), 65 deletions(-)
diff
com>:
>
>
> On 01/08/2016 09:15 PM, Vincenzo Maffione wrote:
>> With this patch, nm_open() does not mmap() the netmap device. This
>> operation is performed separately only if the memory area of the
>> port just opened was not known before.
>> A global list of netma
2016-01-19 19:48 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 19/01/2016 17:54, Michael S. Tsirkin wrote:
>> On Fri, Jan 15, 2016 at 01:41:57PM +0100, Paolo Bonzini wrote:
>>> From: Vincenzo Maffione <v.maffi...@gmail.com>
>>>
>>
With this patch, nm_open() does not mmap() the netmap device. This
operation is performed separately only if the memory area of the
port just opened was not known before.
A global list of netmap clients is kept to check when matches
occur.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.
, monitors) and use special modes (e.g. host rings
only, single queue mode, exclusive access).
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 97
1 file changed, 32 insertions(+), 65 deletions(-)
diff
n be found in the netmap man page and in the netmap API headers.
Vincenzo Maffione (2):
net: netmap: use nm_open() to open netmap ports
net: netmap: avoid mmap() when ports use the same shared memory area
net/netmap.c | 129 ++-
1 file c
2015-12-16 16:46 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 16/12/2015 15:25, Vincenzo Maffione wrote:
>>> vhost-net actually had better performance, so virtio-net dataplane
>>> was never committed. As Michael mentioned, in practice on Linux
2015-12-16 12:37 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 16/12/2015 11:39, Vincenzo Maffione wrote:
>> No problems.
>>
>> I have some additional (orthogonal) curiosities:
>>
>> 1) Assuming "hw/virtio/dataplane/vring.c"
2015-12-16 12:02 GMT+01:00 Michael S. Tsirkin <m...@redhat.com>:
> On Wed, Dec 16, 2015 at 11:39:46AM +0100, Vincenzo Maffione wrote:
>> 2015-12-16 10:34 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>> >
>> >
>> > On 16/12/2015 10:28, Vincenzo
an access_memory() function - it looks
like a lot of operations.
Cheers,
Vincenzo
2015-12-16 9:38 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 15/12/2015 23:33, Vincenzo Maffione wrote:
>> This patch slightly rewrites the code to reduce the number of accesses, since
2015-12-16 10:34 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 16/12/2015 10:28, Vincenzo Maffione wrote:
>> Assuming my TX experiments with disconnected backend (and I disable
>> CPU dynamic scaling of performance, etc.):
>> 1) after patch 1 and 2, vi
= max);
>
> if (!indirect)
> total_bufs = num_bufs;
Here (http://article.gmane.org/gmane.comp.emulators.qemu.block/6620) you meant
+in_total += desc.len;
and
+out_total += desc.len;
2015-12-14 17:06 GMT+01:00 Paolo Bonzini <pbonz...
virtio_queue_empty() to access avail_idx in physical
memory only when necessary.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
hw/virtio/virtio.c | 25 +
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index a
Fill in an element of the used ring with a single combined access to the
guest physical memory, rather than using two separated accesses.
This reduces the overhead due to expensive address translation.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
hw/virtio/virtio.
patches
Vincenzo Maffione (3):
virtio: cache used_idx in a VirtQueue field
virtio: read avail_idx from VQ only when necessary
virtio: combine write of an entry into used ring
hw/virtio/virtio.c | 62 --
1 file changed, 42 insertions(+), 20
Accessing used_idx in the VQ requires an expensive access to
guest physical memory. Before this patch, 3 accesses are normally
done for each pop/push/notify call. However, since the used_idx is
only written by us, we can track it in our internal data structure.
Signed-off-by: Vincenzo Maffione
the idea makes sense, and
a proper patch in this direction would be accepted.
Thanks,
Vincenzo
Vincenzo Maffione (1):
virtio: optimize access to guest physical memory
hw/virtio/virtio.c | 118 +++--
1 file changed, 88 insertions(+), 30 deletions
Accessing a location of guest physical memory involves a translation
from guest physical addresses to host virtual address. This patch
removes unnecessary accesses by virtio implementation, so that at
high processing rates the bottleneck goes from ~1Mtts to ~2Mtts.
Signed-off-by: Vincenzo
2015-12-14 17:06 GMT+01:00 Paolo Bonzini <pbonz...@redhat.com>:
>
>
> On 14/12/2015 15:51, Vincenzo Maffione wrote:
>>
>> This patch slightly rewrites the code to reduce the number of accesses, since
>> many of them seems unnecessary to me. After this reduction, th
of error_report()
CHANGELOG:
- removed dead return and use error_setg_file_open() in place
of error_setg_errno()
- I noticed that net_init_netmap() has to return int, so I restored
the return statements in that function
Vincenzo Maffione (2):
net: netmap: Fix compilation issue
Reorganization of struct NetClientOptions (commit e4ba22b) caused a
compilation failure of the netmap backend. This patch fixes the issue
by properly accessing the union field.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 2 +-
1 file changed, 1 insertion
This update was required to align error reporting of netmap backend
initialization to the modifications introduced by commit a30ecde.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 22 +++---
1 file changed, 11 insertions(+), 11 deletions(-)
Ok, preparing them.
2015-11-06 16:35 GMT+01:00 Eric Blake <ebl...@redhat.com>:
> On 11/06/2015 08:13 AM, Vincenzo Maffione wrote:
>> This update was required to align error reporting of netmap backend
>> initialization to the modifications introduced by commit a30e
Reorganization of struct NetClientOptions (commit e4ba22b) caused a
compilation failure of the netmap backend. This patch fixes the issue
by properly accessing the union field.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 2 +-
1 file changed, 1 insertion
()
CHANGELOG:
- fixed commit messages to reference appropriate commits
- modify netmap_open() to return error in a local Error
variable
Vincenzo Maffione (2):
net: netmap: Fix compilation issue
net: netmap: use error_setg_errno() in place of error_report()
net/clients.h | 4
This update was required to align error reporting of netmap backend
initialization to the modifications introduced by commit a30ecde.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/clients.h | 4 ++--
net/netmap.c | 32
2 files chang
This update was required to align netmap backend to the other
net backends in terms of error reporting.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 14 ++
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/net/netmap.c b/net/netmap.c
Reorganization of struct NetClientOptions caused a compilation failure
of the netmap backend. This patch fixes the issue by properly accessing the
union field.
Signed-off-by: Vincenzo Maffione <v.maffi...@gmail.com>
---
net/netmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
()
Vincenzo Maffione (2):
net: netmap: Fix compilation issue
net: netmap: use error_setg_errno() in place of error_report()
net/netmap.c | 16 +++-
1 file changed, 7 insertions(+), 9 deletions(-)
--
2.3.3
2015-11-05 16:01 GMT+01:00 Eric Blake <ebl...@redhat.com>:
> On 11/05/2015 07:52 AM, Vincenzo Maffione wrote:
>> No worries.
>>
>> It needs --enable-netmap (default is --disable-netmap on linux), and
>> --extra-cflags=-I/path/to/netmap/sys for netmap API headers
06:01 AM, Markus Armbruster wrote:
>> Vincenzo Maffione <v.maffi...@gmail.com> writes:
>>
>>> Reorganization of struct NetClientOptions caused a compilation failure
>>> of the netmap backend. This patch fixes the issue by properly accessing the
>>>
Sure, no problems. I was looking for that commit, but using git blame
didn't work, since there the data structure seems to be part of
autogenerated code.
2015-11-05 14:01 GMT+01:00 Markus Armbruster <arm...@redhat.com>:
> Vincenzo Maffione <v.maffi...@gmail.com> writes:
>
sendmmsg(2).
When we discussed this previously there was concern about the latency
added by CORK.
--
Vincenzo Maffione
Hi,
I cannot see it in your net tree.
Thanks,
Vincenzo
2014-02-21 11:05 GMT+01:00 Stefan Hajnoczi stefa...@redhat.com:
On Thu, Feb 20, 2014 at 03:40:43PM +0100, Vincenzo Maffione wrote:
This patch fixes configure so that the netmap backend is not compiled in
if the
host doesn't
+-
include/net/net.h | 14 +++---
net/net.c | 36 ++--
5 files changed, 43 insertions(+), 43 deletions(-)
--
1.8.5.3
--
Vincenzo Maffione
definitions in the QEMU
code, and we open the way for further code simplifications that will be
introduced by future patches.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
Note: This patch is against the net-next/net Stefan's branch.
Changes against the previous version:
(1) more complete
2014-02-19 16:30 GMT+01:00 Stefan Hajnoczi stefa...@gmail.com:
On Fri, Feb 14, 2014 at 05:40:24PM +0100, Vincenzo Maffione wrote:
This patch fixes configure so that netmap is not compiled in if the
host doesn't support an API version = 11.
Moreover, some modifications have been done
--disable-netmap for qemu to build on freebsd.
This is FreeBSD 9.1-RELEASE, FWIW.
Vincenzo: Do you need to add a ./configure check so NS_MOREFRAG is only
used when the host kernel supports it?
--
Vincenzo Maffione
:
On Fri, Feb 14, 2014 at 2:20 AM, Vincenzo Maffione
v.maffi...@gmail.comwrote:
Yes, for sure we need to do a check.
However, this would involve - I think - some non-trivial modifications to
net/netmap.c, because without NS_MOREFRAG you cannot split a packet over
more netmap slots/descriptors
Ok, this patch should preferably go in before the offloadings.
2014-02-14 16:40 GMT+01:00 Stefan Hajnoczi stefa...@redhat.com:
On Fri, Feb 14, 2014 at 02:41:24PM +0100, Vincenzo Maffione wrote:
It is ok for you if I prepare a patch (touching configure and
net/netmap.c) that makes sure
This patch fixes configure so that netmap is not compiled in if the
host doesn't support an API version = 11.
Moreover, some modifications have been done to net/netmap.c in
order to reflect the current netmap API (11).
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
configure| 3
ping
Cheers
Vincenzo
2014-01-20 Vincenzo Maffione v.maffi...@gmail.com:
The purpose of this patch series is to add offloadings support
(TSO/UFO/CSUM) to the netmap network backend, and make it possible
for the paravirtual network frontends (virtio-net and vmxnet3) to
use it.
In order
Ok, It could go as patch 5/6.
Thanks
2014-02-06 Stefan Hajnoczi stefa...@redhat.com:
On Mon, Jan 20, 2014 at 06:07:03PM +0100, Vincenzo Maffione wrote:
The TAP NetClientInfo structure is inizialized with the TAP-specific
functions that manipulates offloading features.
Signed-off
The tap_has_vnet_hdr() and tap_has_vnet_hdr_len() functions used
to return int, even though they only return true/false values.
This patch changes the prototypes to return bool.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/tap.h | 4 ++--
net/tap-win32.c | 8
Whit this patch, the netmap backend supports TSO/UFO/CSUM
offloadings, and accepts the virtio-net header, similarly to what
happens with TAP. The offloading callbacks in the NetClientInfo
interface have been implemented.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/netmap.c | 68
. netmap).
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/vhost_net.c | 4 ++--
hw/net/virtio-net.c | 16 ++--
hw/net/vmxnet3.c| 12 +---
3 files changed, 13 insertions(+), 19 deletions(-)
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index
The TAP NetClientInfo structure is inizialized with the TAP-specific
functions that manipulates offloading features.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/tap-win32.c | 92 ++---
net/tap.c | 6
2 files
Since TAP offloadings are manipulated through a new API, it's
not necessary to export them in include/net/tap.h anymore.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/tap.h | 6 --
net/tap-win32.c | 12 ++--
net/tap.c | 12 ++--
3 files
,ifname=vale0:01,id=mynet -smp 2 -vga std -m 3G
Changes against the previous version ***
(1) make tap offloading callbacks static
(2) tap-win32.c modified to initialize offloading callback pointers
(3) fix a bug when calling qemu_peer_using_vnet_header
Vincenzo Maffione (6
Some new callbacks have been added to generalize the operations done
by virtio-net and vmxnet3 frontends to manipulate TAP offloadings.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/net.h | 19 +++
net/net.c | 55
: NETMAP_BDG_OFFSET becomes
NETMAP_BDG_VNET_HDR, netmap_set_offload() implemented and
netmap_has_vnet_hdr_len() rewritten.
Vincenzo Maffione (5):
net: change vnet-hdr TAP prototypes
net: extend NetClientInfo for offloading
net: TAP uses NetClientInfo offloading callbacks
net: virtio-net
. netmap).
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/virtio-net.c | 16 ++--
hw/net/vmxnet3.c| 12 +---
2 files changed, 11 insertions(+), 17 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 3626608..00c149b 100644
--- a/hw
The tap_has_vnet_hdr() and tap_has_vnet_hdr_len() functions used
to return int, even though they only return true/false values.
This patch changes the prototypes to return bool.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/tap.h | 4 ++--
net/tap-win32.c | 8
Some new callbacks have been added to generalize the operations done
by virtio-net and vmxnet3 frontends to manipulate TAP offloadings.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/net.h | 19 +++
net/net.c | 55
The TAP NetClientInfo structure is inizialized with the TAP-specific
functions that manipulates offloading features.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/tap.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/net/tap.c b/net/tap.c
index c805f3c..d34ec88 100644
Whit this patch, the netmap backend supports TSO/UFO/CSUM
offloadings, and accepts the virtio-net header, similarly to what
happens with TAP. The offloading callbacks in the NetClientInfo
interface have been implemented.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/netmap.c | 68
2014/1/16 Stefan Hajnoczi stefa...@gmail.com
On Tue, Jan 14, 2014 at 11:59:44AM +0100, Vincenzo Maffione wrote:
(3) There is actually an important problem. In the previous patch
version, TCP/UDP traffic was
supported between two guests attached to a VALE switch if and only
if both
in tap_set_vnet_hdr_len() and remove
tap_using_vnet_hdr(), making the code simpler.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/virtio-net.c | 4
hw/net/vmxnet3.c| 2 --
include/net/tap.h | 1 -
net/tap-win32.c | 4
net/tap.c | 11 +--
5 files
to manipulate
backend offloadings.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/net.h | 17 +
net/net.c | 46 ++
2 files changed, 63 insertions(+)
diff --git a/include/net/net.h b/include/net/net.h
index
about that? What's the best way to manage this temporary
lack of
support?
Vincenzo Maffione (6):
net: change vnet-hdr TAP prototypes
net: removing tap_using_vnet_hdr() function
net: extend NetClientInfo for offloading manipulations
net: TAP uses NetClientInfo offloading callbacks
net
The tap_has_vnet_hdr() and tap_has_vnet_hdr_len() functions used
to return int, even though they only return true/false values.
This patch changes the prototypes to return bool.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/tap.h | 4 ++--
net/tap-win32.c | 8
The TAP NetClientInfo structure is inizialized with the TAP-specific
callbacks that manipulates backend offloading features.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/tap.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/net/tap.c b/net/tap.c
index 42f768c..e6c598d
Whit this patch, the netmap backend supports TSO/UFO/CSUM
offloadings, and accepts the virtio-net header, similarly to what
happens with TAP. The offloading callbacks in the NetClientInfo
interface have been implemented.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/netmap.c | 59
. netmap).
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/virtio-net.c | 14 +-
hw/net/vmxnet3.c| 10 --
2 files changed, 9 insertions(+), 15 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index ac8322d..c850d5b 100644
--- a/hw/net
Ok.
I did not include those modifications into the patch in order to avoid
modifications to the TAP netdev.
2014/1/13 Stefan Hajnoczi stefa...@gmail.com
On Fri, Dec 13, 2013 at 01:04:59PM +0100, Vincenzo Maffione wrote:
diff --git a/include/net/net.h b/include/net/net.h
index 11e1468
2014/1/13 Stefan Hajnoczi stefa...@gmail.com
On Fri, Dec 13, 2013 at 01:05:02PM +0100, Vincenzo Maffione wrote:
+static void netmap_using_vnet_hdr(NetClientState *nc, bool enable)
+{
+}
I was trying to figure out whether it's okay for this function to be a
nop. I've come
to manipulate
backend offloadings.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
include/net/net.h | 19 +++
net/net.c | 55 +++
2 files changed, 74 insertions(+)
diff --git a/include/net/net.h b/include/net/net.h
The TAP NetClientInfo structure is inizialized with the TAP-specific
callbacks that manipulates backend offloading features.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/tap.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/net/tap.c b/net/tap.c
index 39c1cda..175fcb3
With this patch we remove the existing checks in the virtio-net
and vmxnet3 frontends that prevents them from using
offloadings with backends different from TAP (e.g. netmap).
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/virtio-net.c | 4
hw/net/vmxnet3.c| 4 +---
2
,ifname=vale0:01,id=mynet -smp 2 -vga std -m 3G
Vincenzo Maffione (5):
net: extend NetClientInfo for offloading manipulations
net: TAP uses NetClientInfo offloading callbacks
net: virtio-net and vmxnet3 use offloading API
net: add offloadings support to netmap backend
net: virtio-net
With this patch, virtio-net and vmxnet3 frontends make
use of the qemu_peer_* API for backend offloadings manipulations,
instead of calling TAP-specific functions directly.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
hw/net/virtio-net.c | 12 ++--
hw/net/vmxnet3.c| 14
Whit this patch, the netmap backend supports TSO/UFO/CSUM
offloadings, and accepts the virtio-net header, similarly to what
happens with TAP. The offloading callbacks in the NetClientInfo
interface have been implemented.
Signed-off-by: Vincenzo Maffione v.maffi...@gmail.com
---
net/netmap.c | 64
path of the netmap device (default:
'/dev/netmap').
+#
+# Since 1.8
s/1.8/2.0/
Thank you for spotting this. Sending a separate patch to fix this since
the pull request has been merged.
Stefan
--
Vincenzo Maffione
also
make it optional.
Cheers
Vincenzo
2013/12/9 Michael S. Tsirkin m...@redhat.com
On Mon, Dec 09, 2013 at 11:20:29AM +0100, Vincenzo Maffione wrote:
Hello,
I've done some netperf TCP_STREAM and TCP_RR virtio-net tests, using
the
same configuration.
Here are the results
2013/12/9 Stefan Hajnoczi stefa...@gmail.com
On Mon, Dec 09, 2013 at 01:14:31PM +0200, Michael S. Tsirkin wrote:
On Mon, Dec 09, 2013 at 11:55:57AM +0100, Vincenzo Maffione wrote:
If you don't think adding the new flag support for virtio-net is a
good idea
(though TAP performance
at 02:25:46PM +0100, Vincenzo Maffione wrote:
2013/12/9 Stefan Hajnoczi stefa...@gmail.com
On Mon, Dec 09, 2013 at 01:14:31PM +0200, Michael S. Tsirkin wrote:
On Mon, Dec 09, 2013 at 11:55:57AM +0100, Vincenzo Maffione wrote:
If you don't think adding the new flag
-to-guest UDP_STREAM netperf test (64 bytes
packets) with virtio-net frontends:
820 Kpps == 1000 Kpps (+22%).
Measured improvement of a guest-to-guest UDP test (64 bytes packets) with
e1000 frontends and netmap clients on the guests:
1.8 Mpps == 3.1 Mpps (+72%).
Signed-off-by: Vincenzo
-netmap --extra-cflags=-I/path/to/netmap/sys
where /path/to/netmap contains the netmap source code, available at
http://info.iet.unipi.it/~luigi/netmap/
The same webpage contains more information about the netmap project
(together with papers and presentations).
Signed-off-by: Vincenzo Maffione
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