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From: Song Yoong Siang <yoong.siang.song@intel.com>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>,
	Stanislav Fomichev <sdf@google.com>,
	Alexander Duyck <alexanderduyck@fb.com>,
	Ong Boon Leong <boon.leong.ong@intel.com>
Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
	xdp-hints@xdp-project.net,
	Song Yoong Siang <yoong.siang.song@intel.com>
Subject: [xdp-hints] [PATCH net-next v2 3/4] net: stmmac: add Rx HWTS metadata to XDP receive pkt
Date: Mon, 10 Apr 2023 23:57:21 +0800	[thread overview]
Message-ID: <20230410155722.335908-4-yoong.siang.song@intel.com> (raw)
In-Reply-To: <20230410155722.335908-1-yoong.siang.song@intel.com>

Add receive hardware timestamp metadata support via kfunc to XDP receive
packets.

Signed-off-by: Song Yoong Siang <yoong.siang.song@intel.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  1 +
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 24 +++++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index ac8ccf851708..760445275da8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -94,6 +94,7 @@ struct stmmac_rx_buffer {
 
 struct stmmac_xdp_buff {
 	struct xdp_buff xdp;
+	ktime_t rx_hwts;
 };
 
 struct stmmac_rx_queue {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f7bbdf04d20c..7f1c0c36de8c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -5307,6 +5307,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			}
 		}
 
+		stmmac_get_rx_hwtstamp(priv, p, np, &ctx.rx_hwts);
+
 		if (!skb) {
 			unsigned int pre_len, sync_len;
 
@@ -5315,7 +5317,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 
 			xdp_init_buff(&ctx.xdp, buf_sz, &rx_q->xdp_rxq);
 			xdp_prepare_buff(&ctx.xdp, page_address(buf->page),
-					 buf->page_offset, buf1_len, false);
+					 buf->page_offset, buf1_len, true);
 
 			pre_len = ctx.xdp.data_end - ctx.xdp.data_hard_start -
 				  buf->page_offset;
@@ -5411,7 +5413,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 
 		shhwtstamp = skb_hwtstamps(skb);
 		memset(shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps));
-		stmmac_get_rx_hwtstamp(priv, p, np, &shhwtstamp->hwtstamp);
+		shhwtstamp->hwtstamp = ctx.rx_hwts;
 
 		stmmac_rx_vlan(priv->dev, skb);
 		skb->protocol = eth_type_trans(skb, priv->dev);
@@ -7071,6 +7073,22 @@ void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable)
 	}
 }
 
+static int stmmac_xdp_rx_timestamp(const struct xdp_md *_ctx, u64 *timestamp)
+{
+	const struct stmmac_xdp_buff *ctx = (void *)_ctx;
+
+	if (ctx->rx_hwts) {
+		*timestamp = ctx->rx_hwts;
+		return 0;
+	}
+
+	return -ENODATA;
+}
+
+static const struct xdp_metadata_ops stmmac_xdp_metadata_ops = {
+	.xmo_rx_timestamp		= stmmac_xdp_rx_timestamp,
+};
+
 /**
  * stmmac_dvr_probe
  * @device: device pointer
@@ -7178,6 +7196,8 @@ int stmmac_dvr_probe(struct device *device,
 
 	ndev->netdev_ops = &stmmac_netdev_ops;
 
+	ndev->xdp_metadata_ops = &stmmac_xdp_metadata_ops;
+
 	ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 			    NETIF_F_RXCSUM;
 	ndev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT |
-- 
2.34.1


  parent reply	other threads:[~2023-04-10 15:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-10 15:57 [xdp-hints] [PATCH net-next v2 0/4] XDP Rx HWTS metadata for stmmac driver Song Yoong Siang
2023-04-10 15:57 ` [xdp-hints] [PATCH net-next v2 1/4] net: stmmac: restructure Rx hardware timestamping function Song Yoong Siang
2023-04-10 15:57 ` [xdp-hints] [PATCH net-next v2 2/4] net: stmmac: introduce wrapper for struct xdp_buff Song Yoong Siang
2023-04-10 15:57 ` Song Yoong Siang [this message]
2023-04-10 15:57 ` [xdp-hints] [PATCH net-next v2 4/4] net: stmmac: add Rx HWTS metadata to XDP ZC receive pkt Song Yoong Siang

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