netdev - [PATCH net-next 3/7] net: netsec: Add metadata support for xdp mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250311-mvneta-xdp-meta-v1-3-36cf1c99790e@kernel.org>
Date: Tue, 11 Mar 2025 13:18:35 +0100
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Marcin Wojtas <marcin.s.wojtas@...il.com>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, 
 Russell King <linux@...linux.org.uk>, 
 Ilias Apalodimas <ilias.apalodimas@...aro.org>, 
 Masahisa Kojima <kojima.masahisa@...ionext.com>, 
 Sunil Goutham <sgoutham@...vell.com>, Geetha sowjanya <gakula@...vell.com>, 
 Subbaraya Sundeep <sbhatta@...vell.com>, hariprasad <hkelam@...vell.com>, 
 Bharat Bhushan <bbhushan2@...vell.com>, Felix Fietkau <nbd@....name>, 
 Sean Wang <sean.wang@...iatek.com>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 "K. Y. Srinivasan" <kys@...rosoft.com>, 
 Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, 
 Dexuan Cui <decui@...rosoft.com>, Siddharth Vadapalli <s-vadapalli@...com>, 
 Roger Quadros <rogerq@...nel.org>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 linux-hyperv@...r.kernel.org, linux-omap@...r.kernel.org, 
 Lorenzo Bianconi <lorenzo@...nel.org>
Subject: [PATCH net-next 3/7] net: netsec: Add metadata support for xdp
 mode

Set metadata size building the skb from xdp_buff in netsec driver

Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
 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 &&

-- 
2.48.1