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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 55CA0CA9EBC for ; Sat, 26 Oct 2019 13:30:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C091206DD for ; Sat, 26 Oct 2019 13:30:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572096642; bh=l7sfTKa4zeehDC6TY34c96HkC1AAaWqOrVcSqeuLV60=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=voldislQbpPwgh39KKL3bVAAMyHiAxG93X9jSxjAgyku/JDLvKMxqj+SBPwfABhCY 4ctciXS5COurfha+wVxIjidBM89l8UV3w2GYZLhig46dBM1EUyIgeVeN9sX5IDVcSb FUOEkLnvETn6+4qQUMZDJz5gADjQ4bjI6Tyr6h2M= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728412AbfJZNTm (ORCPT ); Sat, 26 Oct 2019 09:19:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:41480 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726967AbfJZNTa (ORCPT ); Sat, 26 Oct 2019 09:19:30 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A3D2321655; Sat, 26 Oct 2019 13:19:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572095970; bh=l7sfTKa4zeehDC6TY34c96HkC1AAaWqOrVcSqeuLV60=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JJSJ881vRFQTH8/R/fgeU11+I8gyvcym4DuzocJxsfU/2I0oEiXc69ChJoEj9OPNx PdeJGz3yFr7z3zmI91HCSjJ73vDjBTQLuOFOfsX/97nHKXM4QNwZDSoXWeRB61/nJn m+zsAvmNQvXttgYGkQG2EiXv4ODDaf2B+zNiWsrc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johannes Berg , Luca Coelho , Sasha Levin , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 15/59] mac80211: accept deauth frames in IBSS mode Date: Sat, 26 Oct 2019 09:18:26 -0400 Message-Id: <20191026131910.3435-15-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191026131910.3435-1-sashal@kernel.org> References: <20191026131910.3435-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 95697f9907bfe3eab0ef20265a766b22e27dde64 ] We can process deauth frames and all, but we drop them very early in the RX path today - this could never have worked. Fixes: 2cc59e784b54 ("mac80211: reply to AUTH with DEAUTH if sta allocation fails in IBSS") Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/20191004123706.15768-2-luca@coelho.fi Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/rx.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b12f23c996f4e..02d0b22d01141 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3391,9 +3391,18 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): /* process for all: mesh, mlme, ibss */ break; + case cpu_to_le16(IEEE80211_STYPE_DEAUTH): + if (is_multicast_ether_addr(mgmt->da) && + !is_broadcast_ether_addr(mgmt->da)) + return RX_DROP_MONITOR; + + /* process only for station/IBSS */ + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_ADHOC) + return RX_DROP_MONITOR; + break; case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): - case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): if (is_multicast_ether_addr(mgmt->da) && !is_broadcast_ether_addr(mgmt->da)) -- 2.20.1