netdev - Re: [PATCH iproute2] ss: add support for delivered and delivered

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Date:   Wed, 28 Nov 2018 21:25:08 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        netdev <netdev@...r.kernel.org>, phil@....cc
Subject: Re: [PATCH iproute2] ss: add support for delivered and delivered_ce fields

On Wed, Nov 28, 2018 at 9:16 PM David Ahern <dsahern@...il.com> wrote:
>
> On 11/28/18 10:10 PM, Eric Dumazet wrote:
> >
> >
> > On 11/28/2018 04:01 PM, Stephen Hemminger wrote:
> >> On Mon, 26 Nov 2018 14:29:53 -0800
> >> Eric Dumazet <edumazet@...gle.com> wrote:
> >>
> >>> Kernel support was added in linux-4.18 in commit feb5f2ec6464
> >>> ("tcp: export packets delivery info")
> >>>
> >>> Tested:
> >>>
> >>> ss -ti
> >>> ...
> >>> ESTAB   0 2270520      [2607:f8b0:8099:e16::]:47646   [2607:f8b0:8099:e18::]:38953
> >>>      ts sack cubic wscale:8,8 rto:7 rtt:2.824/0.278 mss:1428
> >>>      pmtu:1500 rcvmss:536 advmss:1428 cwnd:89 ssthresh:62 bytes_acked:2097871945
> >>>     segs_out:1469144 segs_in:65221 data_segs_out:1469142 send 360.0Mbps lastsnd:2
> >>>     lastrcv:99231 lastack:2 pacing_rate 431.9Mbps delivery_rate 246.4Mbps
> >>> (*) delivered:1469099 delivered_ce:424799
> >>>     busy:99231ms unacked:44 rcv_space:14280 rcv_ssthresh:65535
> >>>     notsent:2207688 minrtt:0.228
> >>>
> >>> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> >>
> >> Applied
> >>
> >
> > Thanks Stephen
> >
> > BTW, it seems ss had some recent regression :
> >
> > Old ss command was happy with "ss dst 127.0.0.1 and not dst :12865"
> >
> > But current one is not.
> >
> > root@...mazet-glaptop:/usr/src/iproute2# ss -V
> > ss utility, iproute2-ss171113
> >
> > root@...mazet-glaptop:/usr/src/iproute2# ss dst 127.0.0.1 and not dst :12865
> > Netid  State      Recv-Q Send-Q                        Local Address:Port                                         Peer Address:Port
> > tcp    ESTAB      0      0                                 127.0.0.1:45368                                           127.0.0.1:999
> > tcp    ESTAB      0      0                                 127.0.0.1:999                                             127.0.0.1:45368
> >
> >
> > root@...mazet-glaptop:/usr/src/iproute2# misc/ss -V
> > ss utility, iproute2-ss181023
> >
> > root@...mazet-glaptop:/usr/src/iproute2# misc/ss dst 127.0.0.1 and not dst :12865
> > ss: bison bellows (while parsing filter): "syntax error!" Sorry.
> > Usage: ss [ OPTIONS ]
> >        ss [ OPTIONS ] [ FILTER ]
> > ...
> >
>
> Most logical commit to ssfilter.y is:
>
> commit 38d209ecf2ae966b9b25de4acb60cdffb0e06ced
> Author: Phil Sutter <phil@....cc>
> Date:   Tue Aug 14 14:18:06 2018 +0200
>
>     ss: Review ssfilter
>
> Can you revert it and see if it helps?

It does not help.

It seem the new way is to use  : ss dst 127.0.0.1 and dport != 12865