From patchwork Fri May 8 12:33:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 226128 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 789E8C38A2A for ; Fri, 8 May 2020 13:15:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FB9924966 for ; Fri, 8 May 2020 13:15:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588943748; bh=KvLHU9qvwL40HmI3IBQBsHdnpHTg5jiXzNUjFjv4S2U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GT3OtyG9cHuXKcw3inOuJi4YWfytKb4u+o2rxY34SJOHtR641ArFkUlDvK+nQv+NS kiEzWRBypKlqn9LZUFZX2n/J99lK3xzufC2wjbxWs+Pq/wvwcJ9is2La0Kw/n3QJ/m hWTxJj2OgUe60UOhMeVw/lmZUWUXrmcAkF/fXoSM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729317AbgEHMpq (ORCPT ); Fri, 8 May 2020 08:45:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:45568 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728686AbgEHMpi (ORCPT ); Fri, 8 May 2020 08:45:38 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D140A21473; Fri, 8 May 2020 12:45:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588941938; bh=KvLHU9qvwL40HmI3IBQBsHdnpHTg5jiXzNUjFjv4S2U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lwaiAdy576b3Lme93prMwen/sMBIp9IftaJjWi7Yy/uahnmZPAeEWYbtpXmuIxcD2 c4ppN1n9wz0PysQ2CVVuAYJel3aIn6QvK5IEgy0ZqzsDVnyfAFgeakog5zsGl3aW2z EYlrSWSKJW9ujvEYRvpKEQFsaPuBpUuubl5elDT0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tom Herbert , Hannes Frederic Sowa , "David S. Miller" Subject: [PATCH 4.4 193/312] ipv6: fix checksum annotation in udp6_csum_init Date: Fri, 8 May 2020 14:33:04 +0200 Message-Id: <20200508123138.026787779@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200508123124.574959822@linuxfoundation.org> References: <20200508123124.574959822@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hannes Frederic Sowa commit c148d16369ff0095eca950d17968ba1d56a47b53 upstream. Cc: Tom Herbert Fixes: 4068579e1e098fa ("net: Implmement RFC 6936 (zero RX csums for UDP/IPv6") Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/ip6_checksum.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/net/ipv6/ip6_checksum.c +++ b/net/ipv6/ip6_checksum.c @@ -84,9 +84,12 @@ int udp6_csum_init(struct sk_buff *skb, * we accept a checksum of zero here. When we find the socket * for the UDP packet we'll check if that socket allows zero checksum * for IPv6 (set by socket option). + * + * Note, we are only interested in != 0 or == 0, thus the + * force to int. */ - return skb_checksum_init_zero_check(skb, proto, uh->check, - ip6_compute_pseudo); + return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check, + ip6_compute_pseudo); } EXPORT_SYMBOL(udp6_csum_init);