Thank you, is there any where we can see what commits are part of which
release?
On Fri, Apr 29, 2016 at 4:02 PM, Jesse Gross <je...@kernel.org> wrote:
> On Fri, Apr 29, 2016 at 12:11 PM, Michael Ben-Ami
> <mben...@digitalocean.com> wrote:
> >
> > OVS version:
> >
> > ovs-ofctl (Open vSwitch) 2.3.2
> > Compiled Aug 24 2015 18:39:15
> > OpenFlow versions 0x1:0x4
> >
> > Linux version:
> >
> > Linux version 3.13.0-52-generic (buildd@comet) (gcc version 4.8.2
> (Ubuntu 4.8.2-19ubuntu1) ) #86-Ubuntu SMP Mon May 4 04:32:59 UTC 2015
> >
> > When IP-fragemented UDP datagrams hit a rule that looks like:
> >
> > cookie=0x0, duration=176936.052s, table=1, n_packets=68911,
> n_bytes=8452972, idle_age=8, hard_age=65534,
> priority=1020,ip,dl_dst=04:01:d7:6f:80:01,nw_dst=xx.xx.104.241
> actions=strip_vlan,mod_nw_dst:10.19.0.5,output:10
> >
> > All IP traffic that hits this flow is successfully received by the VM
> with IP address 10.19.0.5, besides UDP traffic that is IP fragmented.
> >
> > We used netcat and wireshark to test. An example case is a VM receiving
> 5000 bytes of UDP traffic over netcat. If the sender does UDP segmentation
> to sizes of 2048, 2048, and 904 bytes, and the first two segments are
> further IP fragmented on the wire (before hitting OVS), the listening
> netcat on the VM will receive 904 bytes, and the counter of Udp
> InCsumErrors in netstat -su output will increase by 2.
>
> I looks like you should upgrade to 2.3.3 (or later). I see the
> following commit that will presumably fix the problem:
> 8247b1ac ("datapath: Fix L4 checksum handling when dealing with IP
> fragments")
>
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