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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 04A95C43381 for ; Fri, 15 Feb 2019 10:45:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C8D65217F5 for ; Fri, 15 Feb 2019 10:45:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730360AbfBOKp2 (ORCPT ); Fri, 15 Feb 2019 05:45:28 -0500 Received: from s3.sipsolutions.net ([144.76.43.62]:38040 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729841AbfBOKp2 (ORCPT ); Fri, 15 Feb 2019 05:45:28 -0500 Received: by sipsolutions.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92-RC5) (envelope-from ) id 1guazm-0004PC-Or; Fri, 15 Feb 2019 11:45:26 +0100 Message-ID: Subject: Re: [PATCH 1/2] cfg80211: add support to probe unexercised mesh link From: Johannes Berg To: Rajkumar Manoharan Cc: linux-wireless@vger.kernel.org, kevinhayes@google.com, julanhsu@google.com Date: Fri, 15 Feb 2019 11:45:25 +0100 In-Reply-To: <1550152570-13051-2-git-send-email-rmanohar@codeaurora.org> References: <1550152570-13051-1-git-send-email-rmanohar@codeaurora.org> <1550152570-13051-2-git-send-email-rmanohar@codeaurora.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-2.fc28) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org > + * @NL80211_CMD_PROBE_MESH_LINK: The requirement for mesh link metric > + * refreshing, is that from one mesh point we be able to send some data > + * frames to other mesh points which are not currently selected as a > + * primary traffic path, but which are only 1 hop away. The absence of > + * the primary path to the chosen node makes it necessary to apply some > + * form of marking on a chosen packet stream so that the packets can be > + * properly steered to the selected node for testing, and not by the > + * regular mesh path lookup. Further, the packets must be of type data > + * so that the rate control (often embedded in firmware) is used for > + * rate selection. > + * > + * Uses %NL80211_ATTR_MAC and %NL80211_ATTR_FRAME attributes. The frame > + * content here is ethernet data. Please document the address requirements as well. johannes