netdev - Re: [PATCH v3] net: ip, diag -- Add diag interface for raw sockets

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Date:   Fri, 16 Sep 2016 22:00:00 +0300
From:   Cyrill Gorcunov <gorcunov@...il.com>
To:     David Ahern <dsa@...ulusnetworks.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        David Miller <davem@...emloft.net>, kuznet@....inr.ac.ru,
        jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net,
        avagin@...nvz.org, stephen@...workplumber.org
Subject: Re: [PATCH v3] net: ip, diag -- Add diag interface for raw sockets

On Fri, Sep 16, 2016 at 10:06:23AM +0300, Cyrill Gorcunov wrote:
> On Thu, Sep 15, 2016 at 05:45:02PM -0600, David Ahern wrote:
> > > 
> > > Try to be selective in the -K , do not kill tcp sockets ?
> > 
> > I am running
> >    ss -aKw 'dev == red'
> > 
> > to kill raw sockets bound to device named 'red'.
> 
> Thanks David, Eric! I'll play with this option today and report the results.

I created veth pair and bound raw socket into it.

[root@...7 iproute2]# misc/ss -A raw
State      Recv-Q Send-Q                                Local Address:Port                                                 Peer Address:Port                
ESTAB      0      0                                         127.0.0.1:ipproto-255                                            127.0.0.10:ipproto-9090         
UNCONN     0      0                                        127.0.0.10:ipproto-255                                                     *:*                    
UNCONN     0      0                                                :::ipv6-icmp                                                      :::*                    
UNCONN     0      0                                                :::ipv6-icmp                                                      :::*                    
ESTAB      0      0                                               ::1:ipproto-255                                                   ::1:ipproto-9091         
UNCONN     0      0                                           ::1%vm1:ipproto-255                                                    :::*                    
[root@...7 iproute2]# 

[root@...7 iproute2]# misc/ss -aKw 'dev == vm1'
State      Recv-Q Send-Q                                Local Address:Port                                                 Peer Address:Port                
UNCONN     0      0                                           ::1%vm1:ipproto-255                                                    :::*                    

[root@...7 iproute2]# misc/ss -A raw
State      Recv-Q Send-Q                                Local Address:Port                                                 Peer Address:Port                
ESTAB      0      0                                         127.0.0.1:ipproto-255                                            127.0.0.10:ipproto-9090         
UNCONN     0      0                                        127.0.0.10:ipproto-255                                                     *:*                    
UNCONN     0      0                                                :::ipv6-icmp                                                      :::*                    
UNCONN     0      0                                                :::ipv6-icmp                                                      :::*                    
ESTAB      0      0                                               ::1:ipproto-255                                                   ::1:ipproto-9091         

so it get zapped out. Is there some other way to test it?