netdev - Re: [PATCH iproute2] ss: Filter inet dgram sockets with established state by default

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Date:	Tue, 13 Jan 2015 17:31:50 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Vadim Kochan <vadim4j@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] ss: Filter inet dgram sockets with established
 state by default

On Thu,  8 Jan 2015 19:32:22 +0200
Vadim Kochan <vadim4j@...il.com> wrote:

> From: Vadim Kochan <vadim4j@...il.com>
> 
> As inet dgram sockets (udp, raw) can call connect(...)  - they
> might be set in ESTABLISHED state. So keep the original behaviour of
> 'ss' which filtered them by ESTABLISHED state by default. So:
> 
>     $ ss -u
> 
>     or
> 
>     $ ss -w
> 
> Will show only ESTABLISHED UDP sockets by default.
> 
> Signed-off-by: Vadim Kochan <vadim4j@...il.com>
> ---
>  misc/ss.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/misc/ss.c b/misc/ss.c
> index 08d210a..015d829 100644
> --- a/misc/ss.c
> +++ b/misc/ss.c
> @@ -170,11 +170,11 @@ static const struct filter default_dbs[MAX_DB] = {
>  		.families = (1 << AF_INET) | (1 << AF_INET6),
>  	},
>  	[UDP_DB] = {
> -		.states   = (1 << SS_CLOSE),
> +		.states   = (1 << SS_ESTABLISHED),
>  		.families = (1 << AF_INET) | (1 << AF_INET6),
>  	},
>  	[RAW_DB] = {
> -		.states   = (1 << SS_CLOSE),
> +		.states   = (1 << SS_ESTABLISHED),
>  		.families = (1 << AF_INET) | (1 << AF_INET6),
>  	},
>  	[UNIX_DG_DB] = {

This is a change likely to break somebody using 'ss -u' now and the bound
sockets will disappear from the output.

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