[ovs-dev] Re

[Gerencia - Caderode Brasília]

Attn;Your names are linked to an unclaimed benefits. for claims please 
contact;jhaske...@gmail.com
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[ovs-dev] re

[Hailey Fiske (Student)]

I have a donation for you. Contact me for more details



Redlands Community College provides a learner-centered environment committed to 
academic excellence strengthened through service and civic engagement.

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are not the intended recipient, please notify the sender immediately by return 
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[ovs-dev] Re:❕[papiengu...@yahoo.com] (9)

[papienguyen]

⭐ Es ist schon ein paar Tage her. Geht es dir gut?
https://teranihar1952.blogspot.com





papiengu...@yahoo.com

9/28/2020 4:23:21 PM
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[ovs-dev] Re

[Javier Spacca]

Zwei Millionen Dollar wurden Ihnen von Mavis L. Wanczyk gespendet, der am 28. 
August 2017 den Powerball Jackpot von 758,7 Millionen Dollar gewann. 
Kontaktieren Sie sie per E-Mail für weitere Informationen: mavislw...@gmail.com
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Re: [ovs-dev] Re

[Coleman, Berine]

Sent: Friday, September 04, 2020 4:42 PM
Subject: Re

Have been trying to reach you, contact me .karijor...@outlook.dk


Non-Discrimination and Website Accessibility Statement Belton ISD does not 
discriminate on the basis of race, color, national origin, sex, religion, 
disability, age, or any other basis prohibited by law in its programs, 
activities, or employment practices. For inquiries regarding the 
non-discrimination policies, contact: Assistant Superintendent of Human 
Resources, (254) 215-2015, or Executive Director of Special Programs, (254) 
215-2112, 400 N. Wall St., Belton, TX 76513. Belton ISD affirms its commitment 
to ensure that people with disabilities have an equal opportunity to access 
online information and functionality. For assistance accessing any online 
information or functionality that is currently inaccessible, contact: 
Coordinator of Public Information and Legal Services, (254) 215-2067; or to 
file a formal grievance under Section 504 and Title II, contact: Executive 
Director of Special Programs, (254) 215-2112, 400 N. Wall St., Belton, TX 76513
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[ovs-dev] re

[Patrick M Gomez]

Is this a Business or Private Email?
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[ovs-dev] RE,

[Patrick M Gomez]

Is this a Business or Private Email?
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[ovs-dev] re,

[Patrick M Gomez]

Is this a Business or Private Email?
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[ovs-dev] RE; KINDLY ACCEPT MY FUND PROPOSAL

[Mrs. Maria Nelsoma via dev]

From: Mrs. Maria Nelsoma

I am Mrs. Maria Nelsoma Who married to Mr. Robert Nelsoma who worked in Many 
Embassy like USA, AUSTRALIA AND FRANCE before he finally end up in Benin 
Republic.  We were married for 25 years without a child. He died after a brief 
illness that lasted for only four days. Before his death we were both born 
again Christian. 

Since his death I decided not to remarry or get a child outside my matrimonial 
home which the Bible is against. When my late husband was alive he deposited 
the sum of $4.2 Four Million Two hundred Thousand Dollars (4.2) Million U.S. 
Dollars) in the bank here in a fixed suspense account and he declare the fund 
where made for our family intending business,

Presently, I am very sick at the Centre National Hospitalier et Universitaire 
(CNHU) Hospital here in Benin Republic, my doctor told me that I have serious 
cancer which the doctor gave me no assurance of surviving it and I have few 
time to live here on earth. I decided to use that fund to help the orphanages, 
widows, and the Less Privilege ones all over the world.  Having known my 
condition according to the doctor I decided to donate this fund to a church or 
individual that will utilize this money the way I wish by helping the house of 
God or building.

The Bible made us to understand that blessed is the hand that giveth. I took 
this decision because I don’t have any child that will inherit this money. I 
don’t want a situation where this money will be used in an ungodly way. This is 
why I am taking this decision. I am not afraid of death hence I know where I am 
going. I know that I am going to be in the bosom of the Lord. 

 With God all things are possible. As soon as I receive your reply I shall give 
you the contact of the bank here in Benin Republic where my husband deposited 
the money. I want you and the church to always pray for me because the lord is 
my shepherd, my happiness is that I lived a life of a worthy of emulations.

Whosoever that wants to serve the Lord must serve him in spirit and Truth. 
Please always be prayerful all through your life. Please assure me that you 
will act accordingly as I Stated herein. That you will not betray me or you 
shall take an Oath of this fund that you will never go against my last wish. 

Do not be afraid of the bank where the fund was deposited because the bank my 
husband deposited this fund has as Corresponding or Affiliated Bank in Europe 
and United State. 

Remain blessed in the Lord.

Yours,
Mrs. Maria Nelsoma
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Re: [ovs-dev] Re： Re: Re: [PATCH v4 0/3] Add support for TSO with DPDK

[贺鹏]

yes，check dpdk gso lib……

在 2020年3月10日星期二，txfh2007 via dev  写道：

> Hi Flavio and all:
>
>  Is there a way to support software TSO for DPDK tunnel network ? I
> have tried userspace TSO function, and running on tunnel network, I have
> got the following error:
>  "Tunneling packets with HW offload flags is not supported: packet
> dropped"
>  So is there a way to work around if we would support both vlan and
> tunnel network on the same compute node ?
>
> Thanks
> Timo
>
>
>
> --
>
>
>
>
> On Fri, Feb 28, 2020 at 9:56 AM Flavio Leitner  wrote:
> >
> >
> > Hi Yi Yang,
> >
> > This is the bug fix required to make veth TSO work in OvS:
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/
> linux.git/commit/?id=9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
> >
> > commit 9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
> > Author: Jianfeng Tan 
> > Date:   Sat Sep 29 15:41:27 2018 +
> >
> > net/packet: fix packet drop as of virtio gso
> >
> > When we use raw socket as the vhost backend, a packet from virito
> with
> > gso offloading information, cannot be sent out in later validaton at
> > xmit path, as we did not set correct skb->protocol which is further
> used
> > for looking up the gso function.
> >
> > To fix this, we set this field according to virito hdr information.
> >
> > Fixes: e858fae2b0b8f4 ("virtio_net: use common code for
> virtio_net_hdr and skb GSO conversion")
> > Signed-off-by: Jianfeng Tan 
> > Signed-off-by: David S. Miller 
> >
> >
> > So, the minimum kernel version is 4.19.
> >
> Thanks,
> I sent a patch to update the documentation. Please take a look.
> William
>
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>


-- 
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[ovs-dev] RE; KINDLY ACCEPT MY FUND PROPOSAL

[Mrs. Maria Nelsoma via dev]

From: Mrs. Maria Nelsoma

Attn: My Dearest One,

I am the above Named person from Kuwait. I am married to Mr. Robert Nelsoma. 
Who worked with Kuwait embassy in Benin Republic for Nine years before he died 
in the year 2012. We were married for eleven years without a child. He died 
after a brief illness that lasted for only four days.

Before his death we were both born again Christian. Since his death I decided 
not to remarry or get a child outside my matrimonial home which the Bible is 
against. When my late husband was alive he deposited the sum of $3.2 Three 
Million Two hundred Thousand Dollars (3.2) Million U.S. Dollars) in the bank 
here in a fixed suspense account and he declare the fund where made for our 
family intending business,

Presently, the fund is still with the bank, my Doctor told me that I have 
serious sickness which is cancer problem. The one that disturbs me most is for 
orphanages, widows, propagating the word of God and to endeavor that the my 
stroke sickness Having known my condition I decided to donate this fund to a 
church or individual that will utilize this money the way I am going to 
instruct herein I want a church or an individual that will use this fund house 
of God is always maintained.

The Bible made us to understand that blessed is the hand that giveth. I took 
this decision because I don’t have any child that will inherit this money. I 
don’t want a situation where this money will be used in an ungodly way. This is 
why I am taking this decision. I am not afraid of death hence I know where I am 
going. I know that I am going to be in the bosom of the Lord. 

I don’t need any telephone communication in this regard because of my health 
hence the presence of my husband’ s relatives around me always I don't want 
them to know about this development. With God all things are possible. As soon 
as I receive your reply I shall give you the contact of the bank here in Benin 
Republic where my husband deposited the money. I want you and the church to 
always pray for me because the lord is my shepherd, My happiness is that I 
lived a life of a worthy of emulations.

Whosoever that wants to serve the Lord must serve him in spirit and Truth. 
Please always be prayerful all through your life. Please assure me that you 
will act accordingly as I Stated herein. That you will not betray me.

Remain blessed in the Lord.

Yours ,

Mrs. Maria Nelsoma
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[ovs-dev] RE

[Shawn Silberhorn]

I am Shawn Silberhorn, the Head of Governance & Strategic Initiatives of RM 
Merchants Deutsche Bank (Netherlands)  I have a business proposal for you 
Please contact me directly on my email for more info Email: 
shawn.silberh...@mein.gmx

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Re: [ovs-dev] Re： Re: Re: [PATCH v4 0/3] Add support for TSO with DPDK

[Flavio Leitner]

On Tue, Mar 10, 2020 at 04:08:43PM +0800, txfh2007 wrote:
> Hi Flavio and all:
> 
>  Is there a way to support software TSO for DPDK tunnel network ? I have 
> tried userspace TSO function, and running on tunnel network, I have got the 
> following error:
>  "Tunneling packets with HW offload flags is not supported: packet 
> dropped" 
>  So is there a way to work around if we would support both vlan and 
> tunnel network on the same compute node ? 


No, there is no support for tunneling at this point.
fbl

>  
> Thanks
> Timo
> 
> 
> 
> --
> 
> 
> 
> 
> On Fri, Feb 28, 2020 at 9:56 AM Flavio Leitner  wrote:
> >
> >
> > Hi Yi Yang,
> >
> > This is the bug fix required to make veth TSO work in OvS:
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
> >
> > commit 9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
> > Author: Jianfeng Tan 
> > Date:   Sat Sep 29 15:41:27 2018 +
> >
> > net/packet: fix packet drop as of virtio gso
> >
> > When we use raw socket as the vhost backend, a packet from virito with
> > gso offloading information, cannot be sent out in later validaton at
> > xmit path, as we did not set correct skb->protocol which is further used
> > for looking up the gso function.
> >
> > To fix this, we set this field according to virito hdr information.
> >
> > Fixes: e858fae2b0b8f4 ("virtio_net: use common code for virtio_net_hdr 
> > and skb GSO conversion")
> > Signed-off-by: Jianfeng Tan 
> > Signed-off-by: David S. Miller 
> >
> >
> > So, the minimum kernel version is 4.19.
> >
> Thanks,
> I sent a patch to update the documentation. Please take a look.
> William
> 

-- 
fbl
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[ovs-dev] Re： Re: Re: [PATCH v4 0/3] Add support for TSO with DPDK

[txfh2007 via dev]

Hi Flavio and all:

 Is there a way to support software TSO for DPDK tunnel network ? I have 
tried userspace TSO function, and running on tunnel network, I have got the 
following error:
 "Tunneling packets with HW offload flags is not supported: packet dropped" 
 So is there a way to work around if we would support both vlan and tunnel 
network on the same compute node ? 
 
Thanks
Timo



--




On Fri, Feb 28, 2020 at 9:56 AM Flavio Leitner  wrote:
>
>
> Hi Yi Yang,
>
> This is the bug fix required to make veth TSO work in OvS:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
>
> commit 9d2f67e43b73e8af7438be219b66a5de0cfa8bd9
> Author: Jianfeng Tan 
> Date:   Sat Sep 29 15:41:27 2018 +
>
> net/packet: fix packet drop as of virtio gso
>
> When we use raw socket as the vhost backend, a packet from virito with
> gso offloading information, cannot be sent out in later validaton at
> xmit path, as we did not set correct skb->protocol which is further used
> for looking up the gso function.
>
> To fix this, we set this field according to virito hdr information.
>
> Fixes: e858fae2b0b8f4 ("virtio_net: use common code for virtio_net_hdr 
> and skb GSO conversion")
> Signed-off-by: Jianfeng Tan 
> Signed-off-by: David S. Miller 
>
>
> So, the minimum kernel version is 4.19.
>
Thanks,
I sent a patch to update the documentation. Please take a look.
William

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Re: [ovs-dev] Re：[PATCH 2/2] ofproto: Do not delete datapath flows on exit by default

[Ben Pfaff]

I applied this to master.

On Sat, Feb 29, 2020 at 10:59:37AM -0800, Ben Pfaff wrote:
> Thanks for testing.
> 
> I think that the "destroy" call should be outside the braces; the simap
> does not "own" the ports, it's just an string-to-integer map that needs
> to get destroyed along with the ofproto.
> 
> On Sat, Feb 29, 2020 at 10:26:42AM +0800, txfh2007 wrote:
> > Hi Ben:
> > 
> > I have tried, this patch works! Thank you!
> >One question: should "simap_destroy(>tnl_backers)" be within the 
> > close brace ?
> > 
> > Timo  
> > 
> > 
> > 
> > 
> > 
> > Re: [PATCH 2/2] ofproto: Do not delete datapath flows on exit by default
> > 
> > 
> > On Wed, Feb 26, 2020 at 04:40:25PM +0800, txfh2007 wrote:
> > > Hi Ben:
> > >  
> > > I have read your patch about "not delete datapath flow when daemon 
> > > exit". I think this patch is really important, It can be used during 
> > > upgrading without effecting existing traffic. I have test in my env, and 
> > > found it works! Thanks a lot ! 
> > > But I have a question about tunnel traffic: I have found if there're 
> > > vxlan traffic across compute nodes, when daemon exit, the traffic would 
> > > breakdown. The reason is during "close_dpif_backer"  we would delete 
> > > tunnel port in datapath, so even if the flows are not delete , but as the 
> > > tunnel port is deleted , flow action turns to be "drop". So i write this 
> > > mail to ask if we can add a flag to control this behavior ?
> > 
> > Please test this patch: https://patchwork.ozlabs.org/patch/1246701/
> > 
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Re: [ovs-dev] Re：[PATCH 2/2] ofproto: Do not delete datapath flows on exit by default

[Ben Pfaff]

Thanks for testing.

I think that the "destroy" call should be outside the braces; the simap
does not "own" the ports, it's just an string-to-integer map that needs
to get destroyed along with the ofproto.

On Sat, Feb 29, 2020 at 10:26:42AM +0800, txfh2007 wrote:
> Hi Ben:
> 
> I have tried, this patch works! Thank you!
>One question: should "simap_destroy(>tnl_backers)" be within the 
> close brace ?
> 
> Timo  
> 
> 
> 
> 
> 
> Re: [PATCH 2/2] ofproto: Do not delete datapath flows on exit by default
> 
> 
> On Wed, Feb 26, 2020 at 04:40:25PM +0800, txfh2007 wrote:
> > Hi Ben:
> >  
> > I have read your patch about "not delete datapath flow when daemon 
> > exit". I think this patch is really important, It can be used during 
> > upgrading without effecting existing traffic. I have test in my env, and 
> > found it works! Thanks a lot ! 
> > But I have a question about tunnel traffic: I have found if there're 
> > vxlan traffic across compute nodes, when daemon exit, the traffic would 
> > breakdown. The reason is during "close_dpif_backer"  we would delete tunnel 
> > port in datapath, so even if the flows are not delete , but as the tunnel 
> > port is deleted , flow action turns to be "drop". So i write this mail to 
> > ask if we can add a flag to control this behavior ?
> 
> Please test this patch: https://patchwork.ozlabs.org/patch/1246701/
> 
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[ovs-dev] Re：[PATCH 2/2] ofproto: Do not delete datapath flows on exit by default

[txfh2007 via dev]

Hi Ben:

I have tried, this patch works! Thank you!
   One question: should "simap_destroy(>tnl_backers)" be within the 
close brace ?

Timo  





Re: [PATCH 2/2] ofproto: Do not delete datapath flows on exit by default


On Wed, Feb 26, 2020 at 04:40:25PM +0800, txfh2007 wrote:
> Hi Ben:
>  
> I have read your patch about "not delete datapath flow when daemon exit". 
> I think this patch is really important, It can be used during upgrading 
> without effecting existing traffic. I have test in my env, and found it 
> works! Thanks a lot ! 
> But I have a question about tunnel traffic: I have found if there're 
> vxlan traffic across compute nodes, when daemon exit, the traffic would 
> breakdown. The reason is during "close_dpif_backer"  we would delete tunnel 
> port in datapath, so even if the flows are not delete , but as the tunnel 
> port is deleted , flow action turns to be "drop". So i write this mail to ask 
> if we can add a flag to control this behavior ?

Please test this patch: https://patchwork.ozlabs.org/patch/1246701/

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[ovs-dev] RE

[CHERYL ANN]

hello, did you get my last mail?
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[ovs-dev] re

[mhalamova]

Tom Crist, der Kanadier, der einen 40-Millionen-Dollar-Lotteriepreis gewonnen 
hat, teilt Ihnen mit, dass Google in Zusammenarbeit mit Facebook Ihre 
E-Mail-Adresse übermittelt hat, um 4.800.000,00 Euro von mir zu erhalten, da 
ich beschlossen habe, einen Teil meiner Gewinne wegzugeben für wohltätige 
Zwecke, Einzelpersonen und Organisationen. Kontaktieren Sie mich für weitere 
Informationen per E-Mail: mrtomcrist...@gmail.com Wenden Sie sich an meine 
persönliche E-Mail-Adresse: mrtomcrist...@gmail.com 
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Re: [ovs-dev] Re： [PATCH v5] userspace: Add TCP Segmentation Offload support

[Ilya Maximets]

On 28.01.2020 15:43, Flavio Leitner wrote:
> On Sat, Jan 25, 2020 at 05:06:43PM +0800, txfh2007 wrote:
>> Hi Flavio:
> 
> Hi!
> 
>>From userspace-tso.rst I have found this version doesn't support TSO 
>> over VxLAN,
> Correct.
> 
>>   the reason is DPDK pmd driver can't add tunnel header for segmentation 
>> packet ? 
> No, it's just that OvS doesn't enable that specifically in the interfaces yet.
> 
>> Also, do you have plan to backport userspace tso function into version 2.10 ?
> As far as I know, upstream does not backport new features to stable
> branches. In this case it is even more complicated because the
> feature is experimental.

Moreover, this feature requires DPDK 19.11 while 2.10 works with DPDK 17.11 
only.

Best regards, Ilya Maximets.
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Re: [ovs-dev] Re： [PATCH v5] userspace: Add TCP Segmentation Offload support

[Flavio Leitner]

On Sat, Jan 25, 2020 at 05:06:43PM +0800, txfh2007 wrote:
> Hi Flavio:

Hi!

>From userspace-tso.rst I have found this version doesn't support TSO 
> over VxLAN,
Correct.

>   the reason is DPDK pmd driver can't add tunnel header for segmentation 
> packet ? 
No, it's just that OvS doesn't enable that specifically in the interfaces yet.

> Also, do you have plan to backport userspace tso function into version 2.10 ?
As far as I know, upstream does not backport new features to stable
branches. In this case it is even more complicated because the
feature is experimental.

HTH,
fbl


> 
> Thanks
> Timo
> 
> 
> --
> Flavio Leitner 
> William Tu 
> Ben Pfaff ; d...@openvswitch.org ; Ilya 
> Maximets ; txfh2007 
> Re: [ovs-dev] [PATCH v5] userspace: Add TCP Segmentation Offload support
> 
> On Wed, Jan 22, 2020 at 10:33:59AM -0800, William Tu wrote:
> > On Wed, Jan 22, 2020 at 12:54 AM Flavio Leitner  wrote:
> > >
> > >
> > > Hi Ben,
> > >
> > > Thanks for reviewing it!
> > >
> > > On Tue, Jan 21, 2020 at 01:35:39PM -0800, Ben Pfaff wrote:
> > > > On Sat, Jan 18, 2020 at 12:08:06AM +0100, Ilya Maximets wrote:
> > > > > On 18.01.2020 00:03, Stokes, Ian wrote:
> > > > > > Thanks all for review/testing, pushed to master.
> > > > >
> > > > > OK, thanks Ian.
> > > > >
> > > > > @Ben, even though this patch already merged, I'd ask you to take a 
> > > > > look
> > > > > at the code in case you'll spot some issues especially in non-DPDK 
> > > > > related
> > > > > parts.
> > > >
> > > > I found the name dp_packet_hwol_is_ipv4(), and similar, confusing.  The
> > > > name suggested to me "test whether the packet is IPv4" not "test whether
> > > > the packet has an offloaded IPv4 checksum".  I guess the "hwol" is
> > > > offload related but...  I like the name dp_packet_hwol_tx_l4_checksum()
> > > > much more, it makes it obvious at a glance that it's a
> > > > checksum-offloading check.
> > >
> > > hwol = hardware offloading. I hear that all the time, but maybe there is a
> > > better name. I will improve that if no one gets on it first.
> > >
> > > > In the case where we actually receive a 64 kB packet, I think that this
> > > > code is going to be relatively inefficient.  If I'm reading the code
> > > > correctly (I did it quickly), then this is what happens:
> > > >
> > > > - The first 1500 bytes of the packet land in the first
> > > >   dp_packet.
> > > >
> > > > - The remaining 64000ish bytes land in the second dp_packet.
> > 
> > It's not a dp_packet, it's a preallocated buffer per rxq (aux_bufs).
> > 
> > struct netdev_rxq_linux {
> > struct netdev_rxq up;
> > bool is_tap;
> > int fd;
> > char *aux_bufs[NETDEV_MAX_BURST]; /* Batch of preallocated TSO buffers. 
> > */
> > };
> > 
> > > >
> > > > - Then we expand the first dp_packet to the needed size and copy
> > > >   the remaining 64000 bytes into it.
> > >
> > > That's correct.
> > >
> > > > An alternative would be:
> > > >
> > > > - Set up the first dp_packet as currently.
> > > >
> > > > - Set up the second dp_packet so that the bytes are received
> > > >   into it starting at offset (mtu + headroom).
> > > >
> > > > - If more than mtu bytes are received, then copy those bytes
> > > >   into the headroom of the second dp_packet and return it to the
> > > >   caller instead of the first dp_packet.
> > >
> > > I wanted to avoid doing more extensive processing if it's not a TSO packet
> > > to avoid performance regressions since it' very sensitive. Right now the 
> > > 64k
> > > buffer is preallocated and is static for each queue to avoid the malloc
> > > performance issue. Now for TSO case, we have more time per packet for
> > > processing.
> > 
> > Can we implement Ben's idea by
> > 1) set size of aux_buf to 64k + mtu
> > 2) create 2nd dp_packet using this aux_buf and copy first packet to
> > first mtu bytes of aux_buf
> > 3) since we steal this aux_bufs, allocate a new aux_buf by
> > rxq->aux_bufs[i] = xmalloc(64k + mtu)
> > 4) free the first dp_packet, and use the second dp_packet
> 
> I did a quick experiment while at the conference and Ben's idea is
> indeed a bit faster (2.7%) when the packet is not resized due to #1.
> 
> If the buffer gets resized to what's actually used, then it becomes
> a bit slower (1.8%).
> 
> Anyways, feel free to have a look at the code[1]. Perhaps it could
> be changed to be more efficient. Just send me a patch and I will be
> happy to test again.
> 
> [1] https://github.com/fleitner/ovs/tree/tso-cycles-ben
> Thanks,
> fbl
> 

-- 
fbl
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[ovs-dev] RE

[mhalamova]

Tom Crist, der Kanadier, der einen 40-Millionen-Dollar-Lotteriepreis gewonnen 
hat, teilt Ihnen mit, dass Google in Zusammenarbeit mit Facebook Ihre 
E-Mail-Adresse übermittelt hat, um 4.800.000,00 Euro von mir zu erhalten, da 
ich beschlossen habe, einen Teil meiner Gewinne wegzugeben für wohltätige 
Zwecke, Einzelpersonen und Organisationen. Kontaktieren Sie mich für weitere 
Informationen unter tomcrist...@gmail.com
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[ovs-dev] Re： [PATCH v5] userspace: Add TCP Segmentation Offload support

[txfh2007 via dev]

Hi Flavio:

   From userspace-tso.rst I have found this version doesn't support TSO 
over VxLAN,  the reason is DPDK pmd driver can't add tunnel header for 
segmentation packet ? Also, do you have plan to backport userspace tso function 
into version 2.10 ?

Thanks
Timo


--
Flavio Leitner 
William Tu 
Ben Pfaff ; d...@openvswitch.org ; Ilya 
Maximets ; txfh2007 
Re: [ovs-dev] [PATCH v5] userspace: Add TCP Segmentation Offload support

On Wed, Jan 22, 2020 at 10:33:59AM -0800, William Tu wrote:
> On Wed, Jan 22, 2020 at 12:54 AM Flavio Leitner  wrote:
> >
> >
> > Hi Ben,
> >
> > Thanks for reviewing it!
> >
> > On Tue, Jan 21, 2020 at 01:35:39PM -0800, Ben Pfaff wrote:
> > > On Sat, Jan 18, 2020 at 12:08:06AM +0100, Ilya Maximets wrote:
> > > > On 18.01.2020 00:03, Stokes, Ian wrote:
> > > > > Thanks all for review/testing, pushed to master.
> > > >
> > > > OK, thanks Ian.
> > > >
> > > > @Ben, even though this patch already merged, I'd ask you to take a look
> > > > at the code in case you'll spot some issues especially in non-DPDK 
> > > > related
> > > > parts.
> > >
> > > I found the name dp_packet_hwol_is_ipv4(), and similar, confusing.  The
> > > name suggested to me "test whether the packet is IPv4" not "test whether
> > > the packet has an offloaded IPv4 checksum".  I guess the "hwol" is
> > > offload related but...  I like the name dp_packet_hwol_tx_l4_checksum()
> > > much more, it makes it obvious at a glance that it's a
> > > checksum-offloading check.
> >
> > hwol = hardware offloading. I hear that all the time, but maybe there is a
> > better name. I will improve that if no one gets on it first.
> >
> > > In the case where we actually receive a 64 kB packet, I think that this
> > > code is going to be relatively inefficient.  If I'm reading the code
> > > correctly (I did it quickly), then this is what happens:
> > >
> > > - The first 1500 bytes of the packet land in the first
> > >   dp_packet.
> > >
> > > - The remaining 64000ish bytes land in the second dp_packet.
> 
> It's not a dp_packet, it's a preallocated buffer per rxq (aux_bufs).
> 
> struct netdev_rxq_linux {
> struct netdev_rxq up;
> bool is_tap;
> int fd;
> char *aux_bufs[NETDEV_MAX_BURST]; /* Batch of preallocated TSO buffers. */
> };
> 
> > >
> > > - Then we expand the first dp_packet to the needed size and copy
> > >   the remaining 64000 bytes into it.
> >
> > That's correct.
> >
> > > An alternative would be:
> > >
> > > - Set up the first dp_packet as currently.
> > >
> > > - Set up the second dp_packet so that the bytes are received
> > >   into it starting at offset (mtu + headroom).
> > >
> > > - If more than mtu bytes are received, then copy those bytes
> > >   into the headroom of the second dp_packet and return it to the
> > >   caller instead of the first dp_packet.
> >
> > I wanted to avoid doing more extensive processing if it's not a TSO packet
> > to avoid performance regressions since it' very sensitive. Right now the 64k
> > buffer is preallocated and is static for each queue to avoid the malloc
> > performance issue. Now for TSO case, we have more time per packet for
> > processing.
> 
> Can we implement Ben's idea by
> 1) set size of aux_buf to 64k + mtu
> 2) create 2nd dp_packet using this aux_buf and copy first packet to
> first mtu bytes of aux_buf
> 3) since we steal this aux_bufs, allocate a new aux_buf by
> rxq->aux_bufs[i] = xmalloc(64k + mtu)
> 4) free the first dp_packet, and use the second dp_packet

I did a quick experiment while at the conference and Ben's idea is
indeed a bit faster (2.7%) when the packet is not resized due to #1.

If the buffer gets resized to what's actually used, then it becomes
a bit slower (1.8%).

Anyways, feel free to have a look at the code[1]. Perhaps it could
be changed to be more efficient. Just send me a patch and I will be
happy to test again.

[1] https://github.com/fleitner/ovs/tree/tso-cycles-ben
Thanks,
fbl

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[ovs-dev] Re. Guten Tag

[Mr. David Raymond]

Liebste Geliebte,

Ich bin David Raymon. Ein portugiesischer Staatsbürger. Ich habe gesucht und 
Ihre E-Mail gesehen. Also habe ich beschlossen, Ihnen zu schreiben, ob Ihre 
E-Mail echt ist. Bei mir wurde Speiseröhrenkrebs diagnostiziert. Es hat alle 
Formen der medizinischen Behandlung verunreinigt, und jetzt habe ich nur noch 
ein paar Monate zu leben.

Ich bin sehr reich, war aber nie großzügig; Ich habe den größten Teil meines 
Vermögens meinen unmittelbaren Familienmitgliedern gegeben. Ich habe 
beschlossen, Almosen an Wohltätigkeitsorganisationen zu spenden. Ich kann das 
aus gesundheitlichen Gründen nicht mehr selbst machen. Ich habe einmal 
Familienmitglieder gebeten, etwas Geld an
Wohltätigkeitsorganisationen zu spenden. Sie haben dies abgelehnt und das Geld 
behalten. Ich habe eine riesige Bareinlage von achtzehn Millionen Dollar bei 
einer Sicherheitsfirma in Amerika. Ich möchte, dass Sie mir helfen, diese 
Kaution zu sammeln und an Wohltätigkeitsorganisationen zu senden. Sie werden 
30% dieser Mittel für Ihre Unterstützung in Anspruch nehmen. Ich möchte Sie 
bitten, den Erhalt dieser E-Mail so bald wie möglich zu bestätigen und sie mit 
absoluter Vertraulichkeit und Aufrichtigkeit zu behandeln.

Bitte antworten Sie aus Sicherheitsgründen auf meine private E-Mail-Adresse 
fabiano.ron5...@gmail.com

David Raymon
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[ovs-dev] Re. Guten Tag

[Mr. David Raymond]

Liebste Geliebte,

Ich bin David Raymon. Ein portugiesischer Staatsbьrger. Ich habe gesucht und 
Ihre E-Mail gesehen. Also habe ich beschlossen, Ihnen zu schreiben, ob Ihre 
E-Mail echt ist. Bei mir wurde Speiserцhrenkrebs diagnostiziert. Es hat alle 
Formen der medizinischen Behandlung verunreinigt, und jetzt habe ich nur noch 
ein paar Monate zu leben.

Ich bin sehr reich, war aber nie groЯzьgig; Ich habe den grцЯten Teil meines 
Vermцgens meinen unmittelbaren Familienmitgliedern gegeben. Ich habe 
beschlossen, Almosen an Wohltдtigkeitsorganisationen zu spenden. Ich kann das 
aus gesundheitlichen Grьnden nicht mehr selbst machen. Ich habe einmal 
Familienmitglieder gebeten, etwas Geld an
Wohltдtigkeitsorganisationen zu spenden. Sie haben dies abgelehnt und das Geld 
behalten. Ich habe eine riesige Bareinlage von achtzehn Millionen Dollar bei 
einer Sicherheitsfirma in Amerika. Ich mцchte, dass Sie mir helfen, diese 
Kaution zu sammeln und an Wohltдtigkeitsorganisationen zu senden. Sie werden 
30% dieser Mittel fьr Ihre Unterstьtzung in Anspruch nehmen. Ich mцchte Sie 
bitten, den Erhalt dieser E-Mail so bald wie mцglich zu bestдtigen und sie mit 
absoluter Vertraulichkeit und Aufrichtigkeit zu behandeln.

Bitte antworten Sie aus Sicherheitsgrьnden auf meine private E-Mail-Adresse 
fabiano.ron5...@gmail.com

David Raymon

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[ovs-dev] Re reply

[george bana]

Hello Dear,
Please I want you to partner with me to establish a Charity
Organization in your country on my behalf and also on behalf of my
Late husband.
Thanks,
Mrs Justina Bana.
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[ovs-dev] RE

[Ms.Ella Golan]

I am Ms.Ella Golan, I am the Executive Vice President Banking Division with 
FIRST INTERNATIONAL BANK OF ISRAEL LTD (FIBI). I am getting in touch with you 
regarding an extremely important and urgent matter. If you would oblige me the 
opportunity, I shall provide you with details upon your response.

Faithfully,
Ms.Ella Golan
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[ovs-dev] Re： Re：Question about ovs-tcpundump

[txfh2007 via dev]

Hi Ben:
Got it ! So should we change the ofproto/trace cmd parameter from "dpname + 
odp_flow + packet" to "dpname + origin packet" or "dpname + in_port +origin 
packet"  for convenience ?


Timo



--
Ben Pfaff 
txfh2007 
Aaron Conole ; dev 
Re: [ovs-dev] Re：Question about ovs-tcpundump


The packet is not needed for most purposes (a few exceptions are in the
documentation), but if you supply it you don't have to specify all of
the field values by hand.

On Wed, Jul 24, 2019 at 09:57:31AM +0800, txfh2007 via dev wrote:
> Hi Aaron:
> Perfect Answer! Thanks very much !!
> I have another question: how could the result of ovs-tcpundump get used 
> in ofproto/trace ? From the document ovs-vswitchd I have found the 
> ofproto/trace command shoud be formatted as "dpname + odp_flow + packet", but 
> it seems the dpname + odp_flow is enough.  The original packet from 
> ovs-tcpundump is necessary? 
> 
> 
> Timo
> 
> 
> 
> --
> Aaron Conole 
> 2019年7月23日(星期二) 22:06
> txfh2007 
> dev 
> Re: Question about ovs-tcpundump
> 
> 
> "txfh2007"  writes:
> 
> > Hi Aaron:
> 
> Hi Timo,
> 
> > Sorry to bother, I have found your patch about 
> > ovs-tcpundump(https://patchwork.ozlabs.org/patch/860190/), but I don't know 
> > how to use this script. From the ovs-tcpundump  -help I know this command 
> > need a file as its arg（am i right?）, but I don't know which file type could 
> > be use, the .pcap file? 
> >  Could you please explain the usage of the ovs-tcpundump script ?
> 
> Glad to help.  I've CC'd the ovs-dev list, also.  First, from the manpage:
> 
>   The ovs-tcpundump program reads 'tcpdump -xx' output on stdin, looking
>   for hexadecimal packet data, and dumps each Ethernet as a single
>   hexadecimal string on stdout.  This format is suitable for use with the
>   'ofproto/trace' command supported by ovs-vswitchd(8) via ovs-appctl(8).
> 
> So the purpose of the program is to take output from tcpdump (or
> ovs-tcpdump - maybe it would be a good idea to update that manpage?) and
> convert it into something that can be passed to ofproto/trace.  I think
> it could also be used as a way to generate data to pass to the
> 'packet-out' utility of the 'ovs-ofctl(8)' command.
> 
> The 'file' appearing in the command synopsis section of the manpage
> might be misleading.  It isn't an argument.  I read it as indicating
> that the 'ovs-tcpundump' utility takes input via stdin and that input
> should be formatted in the same manner as 'tcpdump -xx' appears (so not
> a pcap, but the actual text output).
> 
> ex:
> 
>   tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on enp0s31f6, link-type EN10MB (Ethernet), capture size 262144 bytes
> 09:59:08.246074 ARP, Request who-has 10.18.25.205 tell _gateway, length 46
>  0x:     54e0 3230 be81 0806 0001
>  0x0010:  0800 0604 0001 54e0 3230 be81 0a12 19fe
>  0x0020:     0a12 19cd   
>  0x0030:       
> 
> I take that and pipe it into ovs-tcpundump:
> 
>10:01:36 aconole@dhcp-25 {ct_error} ~/git/ovs/tests$ 
> ../utilities/ovs-tcpundump < /tmp/foo.txt
>
> 54e03230be810806000108000604000154e03230be810a1219fe0a1219cd
> 
> If you have a pcap, it's possible to use tcpdump like:
> 
>   tcpdump -r some.pcap -xx | ./utilities/ovs-tcpundump
> 
> Did I answer the question?
> 
> > Thanks !
> >
> > Timo
> 
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[ovs-dev] RE

[Smadar Barber-Tsadik]

Sorry to break into your privacy in this manner, 
I'm Smadar Barber-Tsadik, Deputy Chief Executive Officer 
of First International Bank of Israel Ltd (FIBI). 
I am getting in touch with you regarding an extremely 
important and urgent matter. If you would oblige me the 
opportunity, I shall provide you with details upon your 
response.

Faithfully,
Smadar Barber-Tsadik
Responsable del tratamiento: Los datos de carácter personal que se pudieran 
recabar directamente del interesado serán tratados de forma confidencial por 
el Ilustre Ayuntamiento de la Villa de San Bartolomé de Tirajana 
(Ayuntamiento, a partir de ahora).



Finalidad: La finalidad del tratamiento de los datos corresponde a cada una de 
las actividades de gestión que realiza el Ayuntamiento.



Legitimación: El tratamiento de sus datos se realiza para el cumplimiento de 
obligaciones legales por parte del Ayuntamiento, para el cumplimiento de 
misiones realizadas en interés público o en el ejercicio de poderes públicos 
conferidos al Ayuntamiento, así como el hecho de que se tratan los datos que 
usted, en calidad de administrado y/o interesado en algún expediente, aporta 
informadamente y con su consentimiento expreso.



Conservación de datos: Los datos personales proporcionados se conservarán 
durante el tiempo necesario para cumplir con la finalidad para la que se 
recaban y para determinar las posibles responsabilidades que se pudieran 
derivar de la misma. En cada caso, se comunicará de forma expresa cuáles son 
los plazos de conservación, así como de los períodos establecidos en la 
normativa de archivos y documentación.



Comunicación de datos: Con carácter general no se comunicarán los datos 
personales a terceros, salvo obligación legal (comunicaciones al Defensor del 
Pueblo, Jueces y Tribunales), y/o interesados en los procedimientos 
relacionados con la reclamaciones presentadas.



Derechos de los interesados: Puede obtener información sobre los tratamientos 
que se realizan con sus datos por parte del Ayuntamiento. Puede ejercer sus 
derechos de Acceso; Rectificación; Supresión; Portabilidad; Limitación y 
Oposición; y Oposición al Tratamiento Automatizado ante el Ayuntamiento 
dirigiéndose por escrito o por correo electrónico a: Ilustre Ayuntamiento de 
la Villa de San Bartolomé de Tirajana. Plaza de Timanfaya s/n. San Fernando de 
Maspalomas. Maspalomas. San Bartolomé de Tirajana. Las Palmas. C.P.: 35100. 
España.



Teléfono: (+34) 928 723 400

Fax: (+34) 928 721 200

Correo electrónico del Delegado Protección de Datos: d...@maspalomas.com

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[ovs-dev] RE

[wsolorzano]

Avez-vous besoin d'un prêt? Contactez-nous aujourd'hui pour votre prêt @ 3% par 
an pour plus de détails.
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[ovs-dev] ]Re: [PATCH v1] netdev-dpdk: Upgrade to dpdk v18.11

[Ophir Munk]

This patch will be superseded. It will be resent to dpdk-latest branch

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[ovs-dev] Re-confirm

[DAVE Russell]

Hello Sir,

Am here to inform you that a package containing ATM Cards with some
documents have just arrived our customs office at JFK Airport NY. Are
you aware of the shipment to your address?

We need your response to permit the package move.


Thanks,

From: DAVE Russell
Supervisor U.S. Customs and Border Protection
John F. Kennedy International Airport,
Jamaica, NY 11430
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[ovs-dev] RE

[CAMILLE METAYER]

Questo messaggio proviene da Elena Boris per un importo di donazione di 
10.142.728 dollari. Si prega di lasciare i dettagli completi per acquisire i 
soldi. Per la mia e-mail Pravite: (mrselenabo...@gmail.com)

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[ovs-dev] Re-Reply

[Brr.Kono Peter via dev]

Dear Friend

My name is  Attorney  Kono Peter , I really do not mean to waste your time. 
Considering the fact that this is a $1,600,000.00 Dollars deal shear rate 60/40 
% and it's bank to bank wire transaction within Five working days.

Thanks
Brr.Kono Peter
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[ovs-dev] RE

[Nurul Diana Muhammad Shaharudin]

I have been trying to get in touch with you, please contact me directly for 
more details: shirleyle43...@hotmail.com
S L.

Disclaimer http://www.ppj.gov.my/images/email/disclaimer2.htm
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Re: [ovs-dev] :Re: [PATCH] gre: strip gre-tso offload flags

[Gregory Rose]

On 1/18/2018 4:08 PM, wenxu wrote:

Hi Gregory,

How about the test result for this patch?

BR
wenxu


My apologies Wenxu but I've been pulled onto some other high priority 
issues of late.

I will return to this patch when I've gotten everything squared away.

Thanks,

- Greg




At 2018-01-08 10:47:19, "wenxu"  wrote:

At 2018-01-06 02:23:52, "Gregory Rose" > wrote:
>On 12/28/2017 8:45 PM, we...@ucloud.cn   wrote:
>> From: wenxu >
>>
>> if the gro enable, ipgre receive a gre-tso package. After pop
>> the gre-tunnel the encapsulation and GSO_ENCAP flags should be
>> striped. or the packet encap again and will be dropped in
>> ovs_iptunnel_handle_offloads
>>
>> Signed-off-by: wenxu >
>> ---
>>   datapath/linux/compat/ip_gre.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/datapath/linux/compat/ip_gre.c 
b/datapath/linux/compat/ip_gre.c
>> index 03c5435..94fdaa9 100644
>> --- a/datapath/linux/compat/ip_gre.c
>> +++ b/datapath/linux/compat/ip_gre.c
>> @@ -140,6 +140,8 @@ static int ipgre_rcv(struct sk_buff *skb, const 
struct tnl_ptk_info *tpi)
>>__be64 tun_id;
>>int err;
>>   
>> +		if (iptunnel_pull_offloads(skb))

>> +  return PACKET_REJECT;
>>   
>>   		skb_pop_mac_header(skb);

>>flags = tpi->flags & (TUNNEL_CSUM | TUNNEL_KEY);
>
>Wenxu,
>
>I see to patches in the dev list that appear to be identical but this 
>one has the later timestamp so I'll

>respond to this one.
>
>The patch looks simple enough itself but can you explain how to trigger 
>the bug so that I can test

>this fix?
server1: ipaddr on eth2 172.168.0.1/24
ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre
options:local_ip=172.168.0.1 options:remote_ip=172.168.0.7
options:key=1000
ifconfig br0 10.0.0.1/24 up
permanent the ip neigh 10.0.0.2
server2:ipaddr on eth2 172.168.0.2/24
ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre
options:local_ip=172.168.0.2 options:remote_ip=172.168.0.7
options:key=1000
ifconfig br0 10.0.0.2/24 up
permanent the ip neigh 10.0.0.1
server: gateway
ip addr on eth2 172.168.0.7/24
ethtool eth2 gro on
ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre
options:local_ip=flow options:remote_ip=flow options:key=1000
flows:

in_port=gre1,ip,nw_dst=10.0.0.1,actions=set_field:172.168.0.7->tun_src,set_field:172.168.0.1->tun_dst,output:IN_PORT

in_port=gre1,ip,nw_dst=10.0.0.2,actions=set_field:172.168.0.7->tun_src,set_field:172.168.0.2->tun_dst,output:IN_PORT
iperf bettwen 10.0.0.1 and 10.0.0.2, the performance is so bad,
most of the packet drop on gre_sys of gateway
Disable gateway gro of eth2 'ethtool -K eth2 gro off ' , there is
no drop
When packet encap again and will be dropped in
ovs_iptunnel_handle_offloads
if (likely(!skb_is_encapsulated(skb))) {
skb_reset_inner_headers(skb); skb->encapsulation = 1; } else if
(skb_is_gso(skb)) { err = -ENOSYS;
*//drop in here* goto error; }
>
>Thanks,
>
>- Greg



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[ovs-dev] :Re: [PATCH] gre: strip gre-tso offload flags

[wenxu]

Hi Gregory,


How about the test result for this patch?


BR
wenxu



At 2018-01-08 10:47:19, "wenxu"  wrote:


At 2018-01-06 02:23:52, "Gregory Rose"  wrote:
>On 12/28/2017 8:45 PM, we...@ucloud.cn wrote:
>> From: wenxu 
>>
>> if the gro enable, ipgre receive a gre-tso package. After pop
>> the gre-tunnel the encapsulation and GSO_ENCAP flags should be
>> striped. or the packet encap again and will be dropped in
>> ovs_iptunnel_handle_offloads
>>
>> Signed-off-by: wenxu 
>> ---
>>   datapath/linux/compat/ip_gre.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/datapath/linux/compat/ip_gre.c b/datapath/linux/compat/ip_gre.c
>> index 03c5435..94fdaa9 100644
>> --- a/datapath/linux/compat/ip_gre.c
>> +++ b/datapath/linux/compat/ip_gre.c
>> @@ -140,6 +140,8 @@ static int ipgre_rcv(struct sk_buff *skb, const struct 
>> tnl_ptk_info *tpi)
>>  __be64 tun_id;
>>  int err;
>>   
>> +if (iptunnel_pull_offloads(skb))
>> +return PACKET_REJECT;
>>   
>>  skb_pop_mac_header(skb);
>>  flags = tpi->flags & (TUNNEL_CSUM | TUNNEL_KEY);
>
>Wenxu,
>
>I see to patches in the dev list that appear to be identical but this 
>one has the later timestamp so I'll
>respond to this one.
>
>The patch looks simple enough itself but can you explain how to trigger 
>the bug so that I can test

>this fix?






server1:  ipaddr on eth2 172.168.0.1/24
ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre 
options:local_ip=172.168.0.1 options:remote_ip=172.168.0.7 options:key=1000
ifconfig br0 10.0.0.1/24 up
permanent the ip neigh 10.0.0.2


server2:ipaddr on eth2 172.168.0.2/24
ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre 
options:local_ip=172.168.0.2 options:remote_ip=172.168.0.7 options:key=1000
ifconfig br0 10.0.0.2/24 up
permanent the ip neigh 10.0.0.1


server: gateway
ip addr on eth2 172.168.0.7/24
ethtool eth2 gro on


ovs-vsctl add br br0
ovs-vsctl add-port br0 gre1 -- set in gre1 type=gre options:local_ip=flow 
options:remote_ip=flow options:key=1000


flows:
in_port=gre1,ip,nw_dst=10.0.0.1,actions=set_field:172.168.0.7->tun_src,set_field:172.168.0.1->tun_dst,output:IN_PORT
in_port=gre1,ip,nw_dst=10.0.0.2,actions=set_field:172.168.0.7->tun_src,set_field:172.168.0.2->tun_dst,output:IN_PORT


iperf  bettwen 10.0.0.1 and 10.0.0.2, the performance is so bad, most of the 
packet drop on  gre_sys of gateway
Disable gateway gro of eth2 'ethtool -K eth2 gro off ' , there is no drop


When packet encap again and will be dropped in ovs_iptunnel_handle_offloads
 if (likely(!skb_is_encapsulated(skb))) {
skb_reset_inner_headers(skb);
skb->encapsulation = 1;
} else if (skb_is_gso(skb)) {
err = -ENOSYS;
//drop in here 
goto error;
}   


>
>Thanks,
>
>- Greg
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[ovs-dev] Re: [ovs-dev] [PATCH 6/6] nicra-ext: New action NXAST_OUTPUT_REG.

[Ethan Jackson]

Thanks for the review.  I've supplied an incremental below.  The series has
changed enough that I'm going to resend the entire thing for completeness.

 Let's add a requirement that pad[] in struct nx_action_output_reg be
 all-bytes-zero, in case we want to extend it later.

I was wondering about this.  Historically we haven't taken this approach with
padding fields, but I did notice we did so for the resubmit table action.  I
don't expect we will need extensions for this particular action, but I'm fine
with enforcing it anyways.

 The nxm_read_field() that you defined in a previous commit didn't, as
 I recall, shift the selected bits down to the bottom of the field, so
 I think that specifying any part of a register that doesn't include
 the least-significant bit will have surprising results in
 xlate_output_reg_action(). ??I don't see any test for that case,
 although the manpage suggests using output:NXM_NX_REG0[16..31].

As mentioned, that was a bug in nxm_read_field().  I added a test case which
would have caught it to this patch.

 If the field is wider than 16 bits, I think that
 xlate_output_reg_action() will just discard the upper bits, so that
 outputting to port 0x10001 will actually output to port 1. ??It's
 probably better to just not output at all if the value read is greater
 than UINT16_MAX.

Fixed and test case added.

8--8
 NEWS  |3 ++-
 include/openflow/nicira-ext.h |8 +---
 lib/ofp-util.c|8 
 ofproto/ofproto-dpif.c|7 +--
 tests/ofproto-dpif.at |3 ++-
 utilities/ovs-ofctl.8.in  |3 ++-
 6 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/NEWS b/NEWS
index 0318d4a..ae6f55e 100644
--- a/NEWS
+++ b/NEWS
@@ -1,7 +1,8 @@
 Post-v1.2.0
 
 - OpenFlow:
-  - output action now accepts NXM fields.
+  - Added an OpenFlow extension which allows the output action to accept
+NXM fields.
 - ovs-appctl:
   - New version command to determine version of running daemon
 - ovs-vswitchd:
diff --git a/include/openflow/nicira-ext.h b/include/openflow/nicira-ext.h
index be73dbf..6fcf1e7 100644
--- a/include/openflow/nicira-ext.h
+++ b/include/openflow/nicira-ext.h
@@ -793,8 +793,10 @@ enum nx_bd_algorithm {
  * nxm_header values for the 'src' field of NXAST_REG_MOVE.
  *
  * The 'max_len' field indicates the number of bytes to send when the chosen
- * port is OFPP_CONTROLLER.  It's semantics are equivalent to the 'max_len'
- * field of OFPAT_OUTPUT. */
+ * port is OFPP_CONTROLLER.  Its semantics are equivalent to the 'max_len'
+ * field of OFPAT_OUTPUT.
+ *
+ * The 'zero' field is required to zeroed for forward compatibility. */
 struct nx_action_output_reg {
 ovs_be16 type;  /* OFPAT_VENDOR. */
 ovs_be16 len;   /* 24. */
@@ -806,7 +808,7 @@ struct nx_action_output_reg {
 
 ovs_be16 max_len;   /* Max length to send to controller. */
 
-uint8_t pad[6];
+uint8_t zero[6];/* Reserved, must be zero. */
 };
 OFP_ASSERT(sizeof(struct nx_action_output_reg) == 24);
 
diff --git a/lib/ofp-util.c b/lib/ofp-util.c
index 0299e19..b0e7405 100644
--- a/lib/ofp-util.c
+++ b/lib/ofp-util.c
@@ -1983,6 +1983,14 @@ static int
 check_output_reg(const struct nx_action_output_reg *naor,
  const struct flow *flow)
 {
+size_t i;
+
+for (i = 0; i  sizeof naor-zero; i++) {
+if (naor-zero[i]) {
+return ofp_mkerr(OFPET_BAD_ACTION, OFPBAC_BAD_ARGUMENT);
+}
+}
+
 return nxm_src_check(naor-src, nxm_decode_ofs(naor-ofs_nbits),
  nxm_decode_n_bits(naor-ofs_nbits), flow);
 }
diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 2b80a45..fdef4af 100644
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -3023,10 +3023,13 @@ static void
 xlate_output_reg_action(struct action_xlate_ctx *ctx,
 const struct nx_action_output_reg *naor)
 {
-uint16_t ofp_port;
+uint64_t ofp_port;
 
 ofp_port = nxm_read_field_bits(naor-src, naor-ofs_nbits, ctx-flow);
-xlate_output_action__(ctx, ofp_port, ntohs(naor-max_len));
+
+if (ofp_port = UINT16_MAX) {
+xlate_output_action__(ctx, ofp_port, ntohs(naor-max_len));
+}
 }
 
 static void
diff --git a/tests/ofproto-dpif.at b/tests/ofproto-dpif.at
index a422174..a987256 100644
--- a/tests/ofproto-dpif.at
+++ b/tests/ofproto-dpif.at
@@ -46,12 +46,13 @@ AT_CLEANUP
 AT_SETUP([ofproto-dpif - output])
 OFPROTO_START
 AT_DATA([flows.txt], [dnl
-in_port=1 actions=resubmit:2,resubmit:3,resubmit:4,resubmit:5,resubmit:6
+in_port=1 
actions=resubmit:2,resubmit:3,resubmit:4,resubmit:5,resubmit:6,resubmit:7
 in_port=2 actions=output:9
 in_port=3 
actions=load:55-NXM_NX_REG0[[]],output:NXM_NX_REG0[[]],load:66-NXM_NX_REG1[[]]
 in_port=4