From patchwork Wed Aug 19 13:13:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 1347824 X-Patchwork-Delegate: davem@davemloft.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=waDwV3ov; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BWpTk05pNz9sPC for ; Wed, 19 Aug 2020 23:26:50 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728450AbgHSN0r (ORCPT ); Wed, 19 Aug 2020 09:26:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:58526 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728589AbgHSNPu (ORCPT ); Wed, 19 Aug 2020 09:15:50 -0400 Received: from lore-desk.redhat.com (unknown [151.48.139.80]) (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 64E4F20825; Wed, 19 Aug 2020 13:14:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597842891; bh=Y061M4ar3nglvUj4QoM5qnmcswxlbE0Bc8f2da2JCd8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=waDwV3ovAeJ0rxBu4jayO71bWU1iRbaFQefg0soVnP4nr1aSFfZ4c4oOL8abYiIf4 fvpck8WMylgN+80uTgjmqHnvT8wVjPEGqG4u6toehGP1knZoyI7RyzhJKSL/SlkZLa ETjBNWG1nhUBq1OsnjGKTrTiFEtWJubfcwxPaixk= From: Lorenzo Bianconi To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, davem@davemloft.net, lorenzo.bianconi@redhat.com, brouer@redhat.com, echaudro@redhat.com, sameehj@amazon.com, kuba@kernel.org Subject: [PATCH net-next 3/6] net: mvneta: update mb bit before passing the xdp buffer to eBPF layer Date: Wed, 19 Aug 2020 15:13:48 +0200 Message-Id: <08f8656e906ff69bd30915a6a37a01d5f0422194.1597842004.git.lorenzo@kernel.org> 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 Update multi-buffer bit (mb) in xdp_buff to notify XDP/eBPF layer and XDP remote drivers if this is a "non-linear" XDP buffer Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/marvell/mvneta.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 832bbb8b05c8..36a3defa63fa 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -2170,11 +2170,14 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, struct bpf_prog *prog, struct xdp_buff *xdp, u32 frame_sz, struct mvneta_stats *stats) { + struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp); unsigned int len, data_len, sync; u32 ret, act; len = xdp->data_end - xdp->data_hard_start - pp->rx_offset_correction; data_len = xdp->data_end - xdp->data; + + xdp->mb = !!sinfo->nr_frags; act = bpf_prog_run_xdp(prog, xdp); /* Due xdp_adjust_tail: DMA sync for_device cover max len CPU touch */