From patchwork Thu Jul 23 11:42:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 1334766 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=bNuypVMH; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BC9SY2Dpgz9sRR for ; Thu, 23 Jul 2020 21:43:09 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728638AbgGWLnI (ORCPT ); Thu, 23 Jul 2020 07:43:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:46014 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728627AbgGWLnI (ORCPT ); Thu, 23 Jul 2020 07:43:08 -0400 Received: from lore-desk.redhat.com (unknown [151.48.142.198]) (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 AEBDA208E4; Thu, 23 Jul 2020 11:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595504588; bh=bEqWNVHLaaPCKQTgLqQQH5kpGpp2VD7M69JOxRx3qmA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bNuypVMH9aB9N9DTka1kG2fiv/h/Wbahbfe2b3hTfaOJZBS+tU8GB85qwioKcAArZ rR/6UqzgsfC4/0S+OtJo5r613eYch48dvNBjy8hcOfGtS4M/uUpcX7QgaEJ45fkzhs sIHUKveQJKVQ5+Fy1jE0t9rI2wWFktfA+vZYDsqg= From: Lorenzo Bianconi To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, davem@davemloft.net, ast@kernel.org, brouer@redhat.com, daniel@iogearbox.net, lorenzo.bianconi@redhat.com, echaudro@redhat.com, sameehj@amazon.com, kuba@kernel.org Subject: [RFC net-next 02/22] xdp: initialize xdp_buff mb bit to 0 in netif_receive_generic_xdp Date: Thu, 23 Jul 2020 13:42:14 +0200 Message-Id: <0c3c29b8d87259cd54bb7b1ec5892f71d12d62bb.1595503780.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Initialize multi-buffer bit (mb) to 0 in xdp_buff data structure. This is a preliminary patch to enable xdp multi-buffer support. Signed-off-by: Lorenzo Bianconi --- net/core/dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/dev.c b/net/core/dev.c index 316349f6cea5..eb3e54df198c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4641,6 +4641,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb, /* SKB "head" area always have tailroom for skb_shared_info */ xdp->frame_sz = (void *)skb_end_pointer(skb) - xdp->data_hard_start; xdp->frame_sz += SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); + xdp->mb = 0; orig_data_end = xdp->data_end; orig_data = xdp->data;