From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 91945C49ED7 for ; Mon, 16 Sep 2019 10:33:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50706206A4 for ; Mon, 16 Sep 2019 10:33:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=web.de header.i=@web.de header.b="sGlkxWvl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729446AbfIPKdK (ORCPT ); Mon, 16 Sep 2019 06:33:10 -0400 Received: from mout.web.de ([212.227.15.4]:41303 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725826AbfIPKdK (ORCPT ); Mon, 16 Sep 2019 06:33:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1568629975; bh=MmG0AFh9t9sKeZ3P1EE1tiYnOTRXVWpq3OKi4adZ0Uk=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=sGlkxWvliLUF3ExjJFGr561AFjo7QSGcfQDqA3lx45RMkYM0b2BhvAfNGQkTGq2aQ tKwO14im7rLhfpZbz22qwuh4mKHJ4IGmdjXPfwsjLL0w76MVzgsrZzQzo8aQEyk1JZ UObROWvaj4Gk7SEDOthn6prPKutxtrI4XHukPOMU= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([93.131.32.36]) by smtp.web.de (mrweb003 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MEEdU-1huP310fpw-00FU89; Mon, 16 Sep 2019 12:32:55 +0200 Subject: Re: ss: Checking selected network ports To: David Miller , David Ahern , Stephen Hemminger , netdev@vger.kernel.org Cc: Josh Hunt , linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org References: <1556674718-5081-1-git-send-email-johunt@akamai.com> <3d1c67c8-7dfe-905b-4548-dae23592edc5@web.de> <20190601.164838.1496580524715275443.davem@davemloft.net> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20190601.164838.1496580524715275443.davem@davemloft.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US X-Provags-ID: V03:K1:wo+/1s09x7gDgWKENRFkSVAAPFzGSg0cw+VKmlbNbUjF0ezOQFZ 343G8mm410NSRVw9gV49mIezLEQklvK3t4KUYE3EaQdwC5gQBizxhUqWR2+4/2SMpedhFnf rw8s4rkA4GU+MdFIQPGzqb+X4OUqxN2QGSdSPKo17cWERSqNEIiMaa8TM1LGoRo1jPLqrEF HrhT35vhUpY7eelwhO5lw== X-UI-Out-Filterresults: notjunk:1;V03:K0:pixmFXdhl9k=:I6PxJ3yc3xWDtcNm0BFppW GdXmi51fiNqsmyvn61SyHYtwTUnV1nPMa3Tpdpy8hcYCcws04tFRfVZmm8vSUnhZ1qx4Edc5w KFPRPaDtDNeKVqNJragVjl44uSEy85iODuFP1kVCA7LanbWFwH3YWMGD4fBiAvYo90TlTR+fm PKAUHhR7K0Q4TEi149VvE0lrQvkqsFqXqUI3SsCq7vTPnfZSFcHF9YmDrKFlL0qXZdZTWUxO3 YcV/sYKxqWv1djyjPpS2r3LY4xqIoaqkV6MBXpOfC+Oxp78tVJZ59yiAlIYQcLD2rSJiXJAb7 uDm18OiDkEF4etYDYzM0ZTqEckIP/qsepOS788Y8Rfksqt7ZDkk3wTHlKK1swBvh+bN9Axd4f Al0H2mTaL1n/yJ3zE2IRyBAqRFSX3YoJhxU7Jyxnzoo4NjmYBfIUlH2vGwg830uj1twtf5gET Z1LyTkI77K5LgzC0Yys4UURTQPIlhG7YbRPER4HzYV8ABgiNpGknd362g4ekvgtr5weJ8Eh4V FKEhbnoHzlAxpIuj3efDKldseho2No1nz/ZZ4eATn2NgLvBQGnfxR8QCBDJcrDs+swXwgwlv7 7GDpoFcNFoodh7wC4mF1mG+EQ9vhHRfWsWHL9wlRx39L5FX8w5zcol6wuLGOJbjwrMnSxhUCb OU2UU3VwYwWqyT6X5VMTFaZYX4Jliv+lbKcCjeHmPNc15WbeUjY0WC0uvsS7jvSsQoOl3u11V 3dbxRaRvIxJaZFHiC7t2wl9aBeyYZ10PRcZgD/0iv+5QSxQScdkDrCozxC3Lji3SQAKvhvhYE UVKF2fB5SiWQ8X3H/cchnCioxx8aRH11xU3UZh1BwqnJEfIdq5MmSzhdKEZDz8toAKo8HtFN8 iN0532VXS4Nt6aZgzO9T0Yu367VaXU/bhahACBdqwIU7+8kXHawjlcPMNFZrslu7dz/qDPHY5 iw34B1K+7DD3NOO0s0sQkZ6FiuAFcX8hqe/c7blb3Kuf3YAyIqobxwAw+B35sHvACH7XqUbo1 1+kfDWrxp5MHXPkCrwSrU4cDcF1CjxnB8PJ1xu8KwGnODtRxl0bbndwQBR1gKy+s1D+KPNkAX vnBu7gWPDpPhyelrnzMGqu/yYx20VRFJuyxaKSsurf5kKYeHbAN5nsCu1o2BdrWrF7EM7krem ncZLiI60frvuA1cpH9hUajqCMcEJ96CBokjiJWcs0HmjMgQJbWkub8PHjOjfjcxwNwaWg370O guuQDS7tTrIJ9yJnDCEjvcNO/8oYzq/yhrPHYon26x8R+f85OtSlDcg24588= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > If you use netlink operations directly, you can have the kernel filter > on various criteria and only get the socket entries you are interested in. I suggest to take another look at software design options. > This whole discussion has zero to do with what text format 'ss' outputs. Is there a need to improve the software documentation any further? Which programming interface should be used to check the receive queue for a single port (without retrieving more network data before)? Regards, Markus