From patchwork Tue Mar 18 11:46:07 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 14020853 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7B88CC282EC for ; Tue, 18 Mar 2025 11:53:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tbFIaE2RBmy0WoWvCGpbm1Y5B6TcKaYMkYdCfYEtdWo=; b=YTZd6Yvh4jJwT4KOglaes9nf8C hc6khJTKRokbsBPjqJPA9r6Sf93n6Vux+HMeUPwxK5L7B0UgR2XXrApu8+6bVKqT1jmaOaJqE8BR7 ySSfDB+hNNCBRLvg3SCCY/8DotJ0r3BD6xHKWesLwwWyxf40hrva2xFmZXtPo9hH2FHiNnvYeoitR qFnViBsl/xgvW72Zqp2KzyvQNNhoVY7hFgPa/6u6WisbRiVD1fhTYzXxYkR4tFQbxAQGR3SxBW8DT 0byKrnYD/g9wyyOmflt9G+Limi9gNr6hNelIf0LBHwWChQktSMf4xabOKf1hPqqyzzYhM6lPeoQpu Xq9OdYog==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tuVVy-00000005n7b-0puS; Tue, 18 Mar 2025 11:53:46 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tuVOp-00000005loR-1qs2; Tue, 18 Mar 2025 11:46:24 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 2F0A1A48F88; Tue, 18 Mar 2025 11:40:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E22FEC4CEEE; Tue, 18 Mar 2025 11:46:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742298382; bh=OxxwCX4kmkFgORosEwbEM+9lMLPNKxBrIFre8ujLNdY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=G/8bSdeF2XHkLu2RJLqgr1qcc3i6Xqs9vw1Kb8R7xY+Fhi+0qxrWc+cK7qxI1FdJL SS9/v+gso/M9T1ReB7ioMHdNvFXQ74ImLErduWqE3fubCGlD6gfANC1nj5NWggcloQ UAjkdTZmYRgdVo66u0YvV3qtp1AcqUexUDNL77Y90PSDdyDtyRaxljl0cgT3qpMiBc sLPQRd2J4E7JhLpm0Q7XJSmpiOOvxc9bSvcPPGY/2HsGFAd1WIPookJdVIVMv0pe+u Z4oaogFa1h5bqyrwnXJlNbRTr0lO6MlVVP0YpHqUnT147kwtp4IOKu7TrPtNCwHrcu mYphVAbb4JLRA== From: Lorenzo Bianconi Date: Tue, 18 Mar 2025 12:46:07 +0100 Subject: [PATCH net-next v2 3/7] net: netsec: Add metadata support for xdp mode MIME-Version: 1.0 Message-Id: <20250318-mvneta-xdp-meta-v2-3-b6075778f61f@kernel.org> References: <20250318-mvneta-xdp-meta-v2-0-b6075778f61f@kernel.org> In-Reply-To: <20250318-mvneta-xdp-meta-v2-0-b6075778f61f@kernel.org> To: Marcin Wojtas , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Russell King , Ilias Apalodimas , Masahisa Kojima , Sunil Goutham , Geetha sowjanya , Subbaraya Sundeep , hariprasad , Bharat Bhushan , Felix Fietkau , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Siddharth Vadapalli , Roger Quadros , Lorenzo Bianconi Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-omap@vger.kernel.org, Michal Kubiak X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250318_044623_616135_AC6111EA X-CRM114-Status: GOOD ( 11.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Set metadata size building the skb from xdp_buff in netsec driver. netsec driver sets xdp headroom to NETSEC_RXBUF_HEADROOM: NETSEC_RXBUF_HEADROOM max(XDP_PACKET_HEADROOM, NET_SKB_PAD) + NET_IP_ALIGN so the headroom is large enough to contain xdp_frame and xdp metadata. Please note this patch is just compiled tested. Acked-by: Ilias Apalodimas Reviewed-by: Michal Kubiak Signed-off-by: Lorenzo Bianconi --- drivers/net/ethernet/socionext/netsec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index dc99821c6226fbaece65c8ade23899f610b44a9a..ee890de69ffe795dbdcc5331e36be86769f0d9a6 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -970,7 +970,7 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) struct netsec_de *de = dring->vaddr + (DESC_SZ * idx); struct netsec_desc *desc = &dring->desc[idx]; struct page *page = virt_to_page(desc->addr); - u32 xdp_result = NETSEC_XDP_PASS; + u32 metasize, xdp_result = NETSEC_XDP_PASS; struct sk_buff *skb = NULL; u16 pkt_len, desc_len; dma_addr_t dma_handle; @@ -1019,7 +1019,7 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) prefetch(desc->addr); xdp_prepare_buff(&xdp, desc->addr, NETSEC_RXBUF_HEADROOM, - pkt_len, false); + pkt_len, true); if (xdp_prog) { xdp_result = netsec_run_xdp(priv, xdp_prog, &xdp); @@ -1048,6 +1048,9 @@ static int netsec_process_rx(struct netsec_priv *priv, int budget) skb_reserve(skb, xdp.data - xdp.data_hard_start); skb_put(skb, xdp.data_end - xdp.data); + metasize = xdp.data - xdp.data_meta; + if (metasize) + skb_metadata_set(skb, metasize); skb->protocol = eth_type_trans(skb, priv->ndev); if (priv->rx_cksum_offload_flag &&