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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 7B7ACC4743C for ; Mon, 21 Jun 2021 18:06:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 612BB60E0C for ; Mon, 21 Jun 2021 18:06:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233465AbhFUSJB (ORCPT ); Mon, 21 Jun 2021 14:09:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:45160 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234286AbhFUSFD (ORCPT ); Mon, 21 Jun 2021 14:05:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 013D26135D; Mon, 21 Jun 2021 17:56:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624298171; bh=bptRCqEJ8bWyjVb1m8aqTTm0rNWtT6SP2b/8nDtdCHI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fl22s5WKlG6wKTqbAcp3wgZbhXPFdDN2s/WUsEyeMncRbnucVw9fCHq6rohdoh7hx TnsUaslALgdQ1DIdd5No8CLGzqyd7qNKGHRz5dUzgbyMqeDUnA3crvPcFNHgPVa6/o Dr8JP5ZUvh7kWaApMmsVd4sAYeEt7tvXetH2wk5ZO90H9sOs/ouGFxoXxOSOExBVoH OaUu7WD9Hf3hEB6khIGBJh/GGLzFkltuV0kiSt1A7QS8ocW/JIk14NLX/CJtjTabee QvKO6VEDd62Qc1w7QJ87x8xPT22i0E+nczCDHHk/xrRBnmpCwaAI4VXSSGUsiqAKrX kSO0C1JKw9XRg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johannes Berg , Sasha Levin , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 2/9] mac80211: drop multicast fragments Date: Mon, 21 Jun 2021 13:56:00 -0400 Message-Id: <20210621175608.736581-2-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210621175608.736581-1-sashal@kernel.org> References: <20210621175608.736581-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg [ Upstream commit a9799541ca34652d9996e45f80e8e03144c12949 ] These are not permitted by the spec, just drop them. Link: https://lore.kernel.org/r/20210609161305.23def022b750.Ibd6dd3cdce573dae262fcdc47f8ac52b883a9c50@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/rx.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index ae0fba044cd0..bde924968cd2 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1853,17 +1853,15 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; - if (is_multicast_ether_addr(hdr->addr1)) { - I802_DEBUG_INC(rx->local->dot11MulticastReceivedFrameCount); - goto out_no_led; - } - if (rx->sta) cache = &rx->sta->frags; if (likely(!ieee80211_has_morefrags(fc) && frag == 0)) goto out; + if (is_multicast_ether_addr(hdr->addr1)) + return RX_DROP_MONITOR; + I802_DEBUG_INC(rx->local->rx_handlers_fragments); if (skb_linearize(rx->skb)) @@ -1992,7 +1990,6 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) out: ieee80211_led_rx(rx->local); - out_no_led: if (rx->sta) rx->sta->rx_stats.packets++; return RX_CONTINUE; -- 2.30.2