Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752018AbbEBTHy (ORCPT ); Sat, 2 May 2015 15:07:54 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:44226 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751666AbbEBTHs (ORCPT ); Sat, 2 May 2015 15:07:48 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tom Herbert , "David S. Miller" Subject: [PATCH 4.0 002/220] net: add skb_checksum_complete_unset Date: Sat, 2 May 2015 20:58:37 +0200 Message-Id: <20150502185854.435843096@linuxfoundation.org> X-Mailer: git-send-email 2.3.7 In-Reply-To: <20150502185854.333748961@linuxfoundation.org> References: <20150502185854.333748961@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1477 Lines: 47 4.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tom Herbert [ Upstream commit 4e18b9adf2f910ec4d30b811a74a5b626e6c6125 ] This function changes ip_summed to CHECKSUM_NONE if CHECKSUM_COMPLETE is set. This is called to discard checksum-complete when packet is being modified and checksum is not pulled for headers in a layer. Signed-off-by: Tom Herbert Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- include/linux/skbuff.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -3013,6 +3013,18 @@ static inline bool __skb_checksum_valida */ #define CHECKSUM_BREAK 76 +/* Unset checksum-complete + * + * Unset checksum complete can be done when packet is being modified + * (uncompressed for instance) and checksum-complete value is + * invalidated. + */ +static inline void skb_checksum_complete_unset(struct sk_buff *skb) +{ + if (skb->ip_summed == CHECKSUM_COMPLETE) + skb->ip_summed = CHECKSUM_NONE; +} + /* Validate (init) checksum based on checksum complete. * * Return values: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/