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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 C624BC47257 for ; Fri, 8 May 2020 12:51:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A69C224959 for ; Fri, 8 May 2020 12:51:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588942265; bh=F42RYYpFQA8sz/EtIP1xqz9osr29mGNKV4lkhnLOvOg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fJFjzIqovllBSATDuC3sSChqKfBwMQlYml7okI3IfJ9qHYPgoX0VoZL3M4yV7U/zn qHL7V3jhlf0QHeS0ct8Q2GNdMr71HY3I626CxntcUPMA+F16RQVMxJZM9Z7MXWHapE hPpDaDq/I8HAbqLJjH9WtFzL6Pih5Buy4msoUSiQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728735AbgEHMvE (ORCPT ); Fri, 8 May 2020 08:51:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:59792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729861AbgEHMvD (ORCPT ); Fri, 8 May 2020 08:51:03 -0400 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 1CB6124959; Fri, 8 May 2020 12:51:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588942262; bh=F42RYYpFQA8sz/EtIP1xqz9osr29mGNKV4lkhnLOvOg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iAh3u5103V0DFbtKL1W9avLB6ZaZWdYX71ovsHE6QHBXwoEjmdMBv117VHU2DuZ7G zhSXAIu2Twn8FZIJGT6GRKMjKZkfqKg8e6NnWPPEMXEpbZVnjeP2m3FRTYDRTrlDUS PNuYIjRoLgmxvdDbuZ6pMy1j3e1Yao/IzNgONtZ0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Pedersen , Johannes Berg Subject: [PATCH 4.14 21/22] mac80211: add ieee80211_is_any_nullfunc() Date: Fri, 8 May 2020 14:35:33 +0200 Message-Id: <20200508123036.553439396@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200508123033.915895060@linuxfoundation.org> References: <20200508123033.915895060@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Thomas Pedersen commit 30b2f0be23fb40e58d0ad2caf8702c2a44cda2e1 upstream. commit 08a5bdde3812 ("mac80211: consider QoS Null frames for STA_NULLFUNC_ACKED") Fixed a bug where we failed to take into account a nullfunc frame can be either non-QoS or QoS. It turns out there is at least one more bug in ieee80211_sta_tx_notify(), introduced in commit 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing"), where we forgot to check for the QoS variant and so assumed the QoS nullfunc frame never went out Fix this by adding a helper ieee80211_is_any_nullfunc() which consolidates the check for non-QoS and QoS nullfunc frames. Replace existing compound conditionals and add a couple more missing checks for QoS variant. Signed-off-by: Thomas Pedersen Link: https://lore.kernel.org/r/20200114055940.18502-3-thomas@adapt-ip.com Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman --- include/linux/ieee80211.h | 9 +++++++++ net/mac80211/mlme.c | 2 +- net/mac80211/rx.c | 8 +++----- net/mac80211/status.c | 5 ++--- net/mac80211/tx.c | 2 +- 5 files changed, 16 insertions(+), 10 deletions(-) --- a/include/linux/ieee80211.h +++ b/include/linux/ieee80211.h @@ -622,6 +622,15 @@ static inline bool ieee80211_is_qos_null } /** + * ieee80211_is_any_nullfunc - check if frame is regular or QoS nullfunc frame + * @fc: frame control bytes in little-endian byteorder + */ +static inline bool ieee80211_is_any_nullfunc(__le16 fc) +{ + return (ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)); +} + +/** * ieee80211_is_bufferable_mmpdu - check if frame is bufferable MMPDU * @fc: frame control field in little-endian byteorder */ --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2273,7 +2273,7 @@ void ieee80211_sta_tx_notify(struct ieee if (!ieee80211_is_data(hdr->frame_control)) return; - if (ieee80211_is_nullfunc(hdr->frame_control) && + if (ieee80211_is_any_nullfunc(hdr->frame_control) && sdata->u.mgd.probe_send_count > 0) { if (ack) ieee80211_sta_reset_conn_monitor(sdata); --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1255,8 +1255,7 @@ ieee80211_rx_h_check_dup(struct ieee8021 return RX_CONTINUE; if (ieee80211_is_ctl(hdr->frame_control) || - ieee80211_is_nullfunc(hdr->frame_control) || - ieee80211_is_qos_nullfunc(hdr->frame_control) || + ieee80211_is_any_nullfunc(hdr->frame_control) || is_multicast_ether_addr(hdr->addr1)) return RX_CONTINUE; @@ -1643,8 +1642,7 @@ ieee80211_rx_h_sta_process(struct ieee80 * Drop (qos-)data::nullfunc frames silently, since they * are used only to control station power saving mode. */ - if (ieee80211_is_nullfunc(hdr->frame_control) || - ieee80211_is_qos_nullfunc(hdr->frame_control)) { + if (ieee80211_is_any_nullfunc(hdr->frame_control)) { I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc); /* @@ -2134,7 +2132,7 @@ static int ieee80211_drop_unencrypted(st /* Drop unencrypted frames if key is set. */ if (unlikely(!ieee80211_has_protected(fc) && - !ieee80211_is_nullfunc(fc) && + !ieee80211_is_any_nullfunc(fc) && ieee80211_is_data(fc) && rx->key)) return -EACCES; --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -478,8 +478,7 @@ static void ieee80211_report_ack_skb(str rcu_read_lock(); sdata = ieee80211_sdata_from_skb(local, skb); if (sdata) { - if (ieee80211_is_nullfunc(hdr->frame_control) || - ieee80211_is_qos_nullfunc(hdr->frame_control)) + if (ieee80211_is_any_nullfunc(hdr->frame_control)) cfg80211_probe_status(sdata->dev, hdr->addr1, cookie, acked, GFP_ATOMIC); @@ -856,7 +855,7 @@ static void __ieee80211_tx_status(struct I802_DEBUG_INC(local->dot11FailedCount); } - if ((ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc)) && + if (ieee80211_is_any_nullfunc(fc) && ieee80211_has_pm(fc) && ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && !(info->flags & IEEE80211_TX_CTL_INJECTED) && --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -296,7 +296,7 @@ ieee80211_tx_h_check_assoc(struct ieee80 if (unlikely(test_bit(SCAN_SW_SCANNING, &tx->local->scanning)) && test_bit(SDATA_STATE_OFFCHANNEL, &tx->sdata->state) && !ieee80211_is_probe_req(hdr->frame_control) && - !ieee80211_is_nullfunc(hdr->frame_control)) + !ieee80211_is_any_nullfunc(hdr->frame_control)) /* * When software scanning only nullfunc frames (to notify * the sleep state to the AP) and probe requests (for the