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 C6604C48BC2 for ; Mon, 21 Jun 2021 18:01:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AFF8860698 for ; Mon, 21 Jun 2021 18:01:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232903AbhFUSDc (ORCPT ); Mon, 21 Jun 2021 14:03:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:46798 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232456AbhFUSB3 (ORCPT ); Mon, 21 Jun 2021 14:01:29 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 709C5613E9; Mon, 21 Jun 2021 17:54:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624298096; bh=ltZV6Jt4ghxEh3yLIw/23FrPMnxa2xTgM43AU+i0y1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mPq4Rn/NOZgokfQAxFTqh2wMQs6dbCr5BAHqvaRTfDupl/pwlU4z1gVKlrx6ELZ7G UEfkJQE2fjkHZYkQQxSa7ztmGiJAmc9EnSph8ni56lpYjidMclz7X2YO57IeuFnPZb RQQGK6EH/tLhi6wWr2+62f+7CN8jnJk1WkQ8xQpwa9ic0awxc6iaXos0ALTxEuuQr6 C1CaMzmJkK418APd4MTYiD6pC6GAxb5LLX7zuyBuaJtSHB+sLkLb3IDILRRZacVV1f /oB6zYYrssDin61J+ij1uX2x80G7itRFVCSSR0bZ6rZHlQwdMOIrEuNrNRYRCLzAPG aOULoVGlVOg9Q== 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 4.19 03/16] mac80211: drop multicast fragments Date: Mon, 21 Jun 2021 13:54:37 -0400 Message-Id: <20210621175450.736067-3-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210621175450.736067-1-sashal@kernel.org> References: <20210621175450.736067-1-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: stable@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 2ba19decb126..012697efafc3 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2124,17 +2124,15 @@ 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)) @@ -2260,7 +2258,6 @@ 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