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,URIBL_BLOCKED,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 D829DC49361 for ; Mon, 28 Jun 2021 14:21:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC85F61C77 for ; Mon, 28 Jun 2021 14:21:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233492AbhF1OX4 (ORCPT ); Mon, 28 Jun 2021 10:23:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:54500 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233025AbhF1OVZ (ORCPT ); Mon, 28 Jun 2021 10:21:25 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C2D9561C78; Mon, 28 Jun 2021 14:18:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624889940; bh=ZKOlOQEc0Zv2X+bJq4CpdNmLnkZxsej9vDF0pPBnW4s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DvgcRwj7Ydc02nnGm8bLBbo2r7h6Nb96/g0fV+zAAIyFqrcAqAAiGK6ymcgHNSsGl 1aFDmUppH8Lh8K1Hnng3e47sqeqXhhyID2ujW0letky6y6XEB3mi7rYWuFIOeglIsq QoKra/SBXq6yKJFWcWNDvJlQj12d0srHkJ4v7rYdRbs+Bh8pF0l6kZDdbf+wRa/NBB bfAn5CJ8nXhWjz+FLU7EjRhOoqWma8HgboCYn7rTJhU9PxtU9KE9H7EjfXb9quUNKb VRPipS9kVMWo9qjPhb3nOBDN1ynGCAidP77/D5r6V3ePtFYLR404NrjFJhnFRjndlA iJEvHioadmxDQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Johannes Berg , Sasha Levin Subject: [PATCH 5.12 035/110] mac80211: drop multicast fragments Date: Mon, 28 Jun 2021 10:17:13 -0400 Message-Id: <20210628141828.31757-36-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628141828.31757-1-sashal@kernel.org> References: <20210628141828.31757-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.12.14-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.12.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.12.14-rc1 X-KernelTest-Deadline: 2021-06-30T14:18+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 59de7a86599d..cb5cbf02dbac 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2239,17 +2239,15 @@ 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)) @@ -2375,7 +2373,6 @@ 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