From patchwork Thu Jul 23 11:42:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 1334768 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.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=bpf-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=a1frIJa5; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BC9Sc4pdmz9sRK for ; Thu, 23 Jul 2020 21:43:12 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728643AbgGWLnM (ORCPT ); Thu, 23 Jul 2020 07:43:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:46066 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728627AbgGWLnM (ORCPT ); Thu, 23 Jul 2020 07:43:12 -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 9A5C922B43; Thu, 23 Jul 2020 11:43:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595504591; bh=kIdzdnR5oMJlEqKbVwcJr7xWuFT9MuTFnSq8zco5Xws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a1frIJa5m8+u37LaF1Mq/PEe9zEkoVzOV12IBTUixGUwiVESGkZk1AdQZwRaLZKGR iGb9axurJNnGObf8PrCFkDKYgt5lPQoFZrS5yt3dpI0/8GetzTNNrgz2Di+IWDoMnL OwucPUF5JlYRv2kHtNQsTvTLvcuTWJ+KTsQmKWPs= 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 03/22] net: virtio_net: initialize mb bit of xdp_buff to 0 Date: Thu, 23 Jul 2020 13:42:15 +0200 Message-Id: X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@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 --- drivers/net/virtio_net.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index ba38765dc490..100fa9b60026 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -690,6 +690,7 @@ static struct sk_buff *receive_small(struct net_device *dev, xdp.data_meta = xdp.data; xdp.rxq = &rq->xdp_rxq; xdp.frame_sz = buflen; + xdp.mb = 0; orig_data = xdp.data; act = bpf_prog_run_xdp(xdp_prog, &xdp); stats->xdp_packets++; @@ -860,6 +861,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, xdp.data_meta = xdp.data; xdp.rxq = &rq->xdp_rxq; xdp.frame_sz = frame_sz - vi->hdr_len; + xdp.mb = 0; act = bpf_prog_run_xdp(xdp_prog, &xdp); stats->xdp_packets++;