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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 B6FDAC3F2D7 for ; Tue, 3 Mar 2020 17:53:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9112B214DB for ; Tue, 3 Mar 2020 17:53:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583257993; bh=fh/0xdOoh175PJRRkgF0SxozxLY14ZyoQVxKq3XrrVU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CRGtOf8PqbkOg6+6vwD6RSsHGjhL3lWmPiUIKdV7lAqMw85sYv89sYVYs6FTG9w1q bG2vy+Lw7wG8pS3FRN7gsqEzNJCFYezT3KXm7B3La8l4lJn+1xGxOA5OHDonF+X5fS dYCQD9FHDfcsFgzjT1rQv+B9mOBpMhUWwTQNgkoA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732354AbgCCRxM (ORCPT ); Tue, 3 Mar 2020 12:53:12 -0500 Received: from mail.kernel.org ([198.145.29.99]:33528 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731966AbgCCRxG (ORCPT ); Tue, 3 Mar 2020 12:53:06 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 416C220728; Tue, 3 Mar 2020 17:53:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583257985; bh=fh/0xdOoh175PJRRkgF0SxozxLY14ZyoQVxKq3XrrVU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p9SlwZccehFoPgXhX76ZLTAuO3fNW4V7iI5Wy/C98N17pjOmrPEajuvlT2jEcsFMC ay13sTgAVxsJ7n+jSWRy0cUCxdWOfyIEdgRepxtj3S8QFfj8mWY7yAfHR6Cd9mMQ9V g43BuC+6oM+cKetRTdAOvFhmdnpeaLBJBGUCy5zU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johannes Berg , Luca Coelho , Sasha Levin Subject: [PATCH 5.4 028/152] mac80211: consider more elements in parsing CRC Date: Tue, 3 Mar 2020 18:42:06 +0100 Message-Id: <20200303174305.640729129@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200303174302.523080016@linuxfoundation.org> References: <20200303174302.523080016@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Johannes Berg [ Upstream commit a04564c99bb4a92f805a58e56b2d22cc4978f152 ] We only use the parsing CRC for checking if a beacon changed, and elements with an ID > 63 cannot be represented in the filter. Thus, like we did before with WMM and Cisco vendor elements, just statically add these forgotten items to the CRC: - WLAN_EID_VHT_OPERATION - WLAN_EID_OPMODE_NOTIF I guess that in most cases when VHT/HE operation change, the HT operation also changed, and so the change was picked up, but we did notice that pure operating mode notification changes were ignored. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/20200131111300.891737-22-luca@coelho.fi [restrict to VHT for the mac80211 branch] Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/util.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 32a7a53833c01..739e90555d8b9 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1063,16 +1063,22 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, elem_parse_failed = true; break; case WLAN_EID_VHT_OPERATION: - if (elen >= sizeof(struct ieee80211_vht_operation)) + if (elen >= sizeof(struct ieee80211_vht_operation)) { elems->vht_operation = (void *)pos; - else - elem_parse_failed = true; + if (calc_crc) + crc = crc32_be(crc, pos - 2, elen + 2); + break; + } + elem_parse_failed = true; break; case WLAN_EID_OPMODE_NOTIF: - if (elen > 0) + if (elen > 0) { elems->opmode_notif = pos; - else - elem_parse_failed = true; + if (calc_crc) + crc = crc32_be(crc, pos - 2, elen + 2); + break; + } + elem_parse_failed = true; break; case WLAN_EID_MESH_ID: elems->mesh_id = pos; -- 2.20.1