On 04.08.2016 14:52, xu.binb...@zte.com.cn wrote:
> Thank you.
> 
> I saw the patch in the link: 
> http://openvswitch.org/pipermail/dev/2016-February/065556.html
> 
> But in the latest code of OVS, I can't find this path??

Did you read the whole discussion?

> By the way, should I keep the mode of 'lib/netdev-dpdk.c' file?

Definitely. But I don't think you should send second version if
you don't have very strong arguments for such solution.

> Ilya Maximets <i.maxim...@samsung.com> 写于 2016/08/04 19:33:58:
> 
>> 发件人:  Ilya Maximets <i.maxim...@samsung.com>
>> 收件人:  xu.binb...@zte.com.cn,
>> 抄送: Ben Pfaff <b...@ovn.org>, dev@openvswitch.org, Heetae Ahn
>> <heetae82....@samsung.com>, Dyasly Sergey <s.dya...@samsung.com>
>> 日期:  2016/08/04 19:34
>> 主题: Re: 答复: Re: [ovs-dev, CudaMailTagged] netdev-dpdk: unlink
>> socket file when constructing vhostuser.
>>
>> On 04.08.2016 14:05, xu.binb...@zte.com.cn wrote:
>> > I get the source code clone from branch origin/master in the github.
>>
>> Sorry. All is OK, but you changed the mode of 'lib/netdev-dpdk.c' file.
>>
>> > In fact, I killed ovs-vswitchd process and then start it again.
>> > In this case, sockets left on the filesystem.
>>
>> That is normal. Why you using hard untrappable signals? There will be
>> no issues in normal case (even SIGTERM or SIGINT).
>>
>> There are few discussions about this in mail-list. That's an old topic.
>> Some links:
>>     http://openvswitch.org/pipermail/dev/2016-February/065556.html
>>     http://openvswitch.org/pipermail/dev/2016-February/065470.html
>>
>>
>> > Sorry for my description in the commit msg, it may be a puzzle to you.
>> >
>> >
>> >
>> >
>> > 发件人:         Ilya Maximets <i.maxim...@samsung.com>
>> > 收件人:         xu.binb...@zte.com.cn, dev@openvswitch.org,
>> > 抄送:        Ben Pfaff <b...@ovn.org>, Dyasly Sergey
>> <s.dya...@samsung.com>, Heetae Ahn <heetae82....@samsung.com>
>> > 日期:         2016/08/04 18:42
>> > 主题:        Re: [ovs-dev, CudaMailTagged] netdev-dpdk: unlink
>> socket file when constructing vhostuser.
>> >
>> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 -
>>  --
>> >
>> >
>> >
>> > Oh, again...
>> >
>> > 1. This patch not for upstream version of OVS. (I guess your OVS patched
>> >   at least with vHost client support).
>> >
>> > 2. If you will restart OVS properly (even by SIGTERM or SIGINT) socket
>> >   will be removed inside 'rte_vhost_driver_unregister()' or inside
>> >   fatal_signal handler. Are you sure that it's the issue of upstream
>> >   OVS and not your local patches?
>> >
>> > 3. Segmentation fault or another hard failure is the only reason to
>> >   sockets left on the filesystem.
>> >
>> > Best regards, Ilya Maximets.
>> >
>> > On 04.08.2016 23:31, xu.binb...@zte.com.cn wrote:
>> >> Work with DPDK 16.07, a UNIX socket will be created when we
>> >> add vhostuser port. After that, the restarting of ovs-vswitchd
>> >> leads to the failure of socket binding, so the vhostuser port
>> >> can't be created successfully.
>> >>
>> >> This commit unlink socket file before creating UNIX socket to
>> >> avoid failure of socket binding.
>> >>
>> >> Signed-off-by: Binbin Xu <xu.binb...@zte.com.cn>
>> >> ---
>> >>  lib/netdev-dpdk.c | 5 ++++-
>> >>  1 file changed, 4 insertions(+), 1 deletion(-)
>> >>  mode change 100644 => 100755 lib/netdev-dpdk.c
>> >>
>> >> diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
>> >> old mode 100644
>> >> new mode 100755
>> >> index aaac0d1..95cf7c3
>> >> --- a/lib/netdev-dpdk.c
>> >> +++ b/lib/netdev-dpdk.c
>> >> @@ -885,7 +885,10 @@ netdev_dpdk_vhost_user_construct(struct
>> netdev *netdev)
>> >>       */
>> >>      snprintf(dev->vhost_id, sizeof(dev->vhost_id), "%s/%s",
>> >>               vhost_sock_dir, name);
>> >> -
>> >> +    
>> >> +    if (!(flags & RTE_VHOST_USER_CLIENT)) {
>> >> +        unlink(dev->vhost_id);
>> >> +    }
>> >>      err = rte_vhost_driver_register(dev->vhost_id, flags);
>> >>      if (err) {
>> >>          VLOG_ERR("vhost-user socket device setup failure for socket 
>> >> %s\n",
>> >>
>> >
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