From patchwork Thu Feb 13 09:07:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Per@axis.com X-Patchwork-Id: 1237352 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=axis.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=axis.com header.i=@axis.com header.a=rsa-sha256 header.s=axis-central1 header.b=oZko75TY; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48J9dF10xZz9sPJ for ; Thu, 13 Feb 2020 20:07:29 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729578AbgBMJHY (ORCPT ); Thu, 13 Feb 2020 04:07:24 -0500 Received: from smtp1.axis.com ([195.60.68.17]:50964 "EHLO smtp1.axis.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729551AbgBMJHY (ORCPT ); Thu, 13 Feb 2020 04:07:24 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; l=776; q=dns/txt; s=axis-central1; t=1581584844; x=1613120844; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=75y8Ks7TwYURKYkJ4E8vNU86aVP+xnphUde+RTxWJZg=; b=oZko75TYRmX+9VI77znl1JJfFfrpHK1jKU74bguih69I9/wij8w+TkCD tZErjGtZ+Yp/MWcqjAD+wNudB233uBO4WJkvwJjwqMvCfNwRfygj5rQAi ojCSyHzop8AQKcRk+c5AMZ5EHmRonb3vbcdOKpIO2rB97clIJcpP4J3Ox RaBUlbUvh8eJ28uKxvo679y1DDrotu7h1dBhUOX3zkeHmbUk2YdvDszR6 5vMpG59004vcPzXZMbRVR5d4dvDKzyk3oOB3887l8DA2pRnhQY7dQiA60 94A5kz/8N/feQze+tkQYG0RZuOeItREo2AV87H1Y9aK1OBucDyOvrNM4j A==; IronPort-SDR: 93kBofHemON/Cy+I+huCdypOtTjHuPUUM7HJjOHFs/BqchPGVbX7Gs4iqKyNCDBw/SGDe3SQY0 Qeuc/mESav9VqPZCDo8X13TADT7hhKuiHtCxIet1WTj5WNmf1hoyow0nmftHPGWAU5PeyXYi6S XEbfOAbkRkjs3pzMj1IjwgelebwBs/hGeIq/Fh/TNlqrXMQhIAKH1Kzx3KwgMNWLxx5jLJA+O0 JsrMOwWQ3W4X8BsVU6y4eXsWvrpOw86e/2UwT4XUb6x/3wOEO5s+Pq6EThVsZpcfou8GPDCOCT 93I= X-IronPort-AV: E=Sophos;i="5.70,436,1574118000"; d="scan'208";a="5377320" From: , <"Forlin To: , , , CC: Per Forlin , Per Forlin Subject: [PATCH 2/2] net: dsa: tag_ar9331: Make sure there is headroom for tag Date: Thu, 13 Feb 2020 10:07:07 +0100 Message-ID: <20200213090707.27937-2-per.forlin@axis.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20200213090707.27937-1-per.forlin@axis.com> References: <20200213090707.27937-1-per.forlin@axis.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Per Forlin Passing tag size to skb_cow_head will make sure there is enough headroom for the tag data. This change does not introduce any overhead in case there is already available headroom for tag. Signed-off-by: Per Forlin Reviewed-by: Andrew Lunn --- net/dsa/tag_ar9331.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/dsa/tag_ar9331.c b/net/dsa/tag_ar9331.c index 466ffa92a474..55b00694cdba 100644 --- a/net/dsa/tag_ar9331.c +++ b/net/dsa/tag_ar9331.c @@ -31,7 +31,7 @@ static struct sk_buff *ar9331_tag_xmit(struct sk_buff *skb, __le16 *phdr; u16 hdr; - if (skb_cow_head(skb, 0) < 0) + if (skb_cow_head(skb, AR9331_HDR_LEN) < 0) return NULL; phdr = skb_push(skb, AR9331_HDR_LEN);