From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9B743C471 for ; Wed, 15 Nov 2023 19:39:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="BPgqGvC7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8890CC433C8; Wed, 15 Nov 2023 19:39:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700077156; bh=YUo4Z5zzH+gG8z8cw/MrDxCmlOtwJ0pQSmnIzLphY3I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BPgqGvC7N8i0/6ST4BTWNuavcbVVI+H4/sZyJYq55qtNAfdND48iLIbYUTSJ6yYJG RFIUFc0o4vYyd4CRy6+LY76RtEUEYkuJ/v/Khw47cairuaeHlo0rsSdSgkyie00bQS /pCvpP/HMm9AE3KT4XlcLrMyHowJkzqo6Tqh/1o8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Heiner Kallweit , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.5 523/550] r8169: respect userspace disabling IFF_MULTICAST Date: Wed, 15 Nov 2023 14:18:27 -0500 Message-ID: <20231115191637.184543326@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191600.708733204@linuxfoundation.org> References: <20231115191600.708733204@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Heiner Kallweit [ Upstream commit 8999ce4cfc87e61b4143ec2e7b93d8e92e11fa7f ] So far we ignore the setting of IFF_MULTICAST. Fix this and clear bit AcceptMulticast if IFF_MULTICAST isn't set. Note: Based on the implementations I've seen it doesn't seem to be 100% clear what a driver is supposed to do if IFF_ALLMULTI is set but IFF_MULTICAST is not. This patch is based on the understanding that IFF_MULTICAST has precedence. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Heiner Kallweit Link: https://lore.kernel.org/r/4a57ba02-d52d-4369-9f14-3565e6c1f7dc@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/realtek/r8169_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 4b8251cdb4363..0c76c162b8a9f 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -2582,6 +2582,8 @@ static void rtl_set_rx_mode(struct net_device *dev) if (dev->flags & IFF_PROMISC) { rx_mode |= AcceptAllPhys; + } else if (!(dev->flags & IFF_MULTICAST)) { + rx_mode &= ~AcceptMulticast; } else if (netdev_mc_count(dev) > MC_FILTER_LIMIT || dev->flags & IFF_ALLMULTI || tp->mac_version == RTL_GIGA_MAC_VER_35 || -- 2.42.0