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From: Larysa Zaremba <larysa.zaremba@intel.com>
To: bpf@vger.kernel.org
Cc: Larysa Zaremba <larysa.zaremba@intel.com>,
	Stanislav Fomichev <sdf@google.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Jakub Kicinski <kuba@kernel.org>,
	Martin KaFai Lau <martin.lau@linux.dev>,
	Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
	Jesse Brandeburg <jesse.brandeburg@intel.com>,
	Tony Nguyen <anthony.l.nguyen@intel.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Jesper Dangaard Brouer <brouer@redhat.com>,
	Alexander Lobakin <alexandr.lobakin@intel.com>,
	Magnus Karlsson <magnus.karlsson@gmail.com>,
	Maryam Tahhan <mtahhan@redhat.com>,
	xdp-hints@xdp-project.net, netdev@vger.kernel.org,
	intel-wired-lan@lists.osuosl.org, linux-kernel@vger.kernel.org
Subject: [xdp-hints] [PATCH 10/15] ice: Implement VLAN tag hint
Date: Fri, 12 May 2023 17:16:34 +0200	[thread overview]
Message-ID: <20230512151639.992033-11-larysa.zaremba@intel.com> (raw)
In-Reply-To: <20230512151639.992033-1-larysa.zaremba@intel.com>

Implement .xmo_rx_vlan_tag callback to allow XDP code to read
packet's VLAN tag.

Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
index 1caa73644e7b..39547feb6106 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
@@ -627,7 +627,51 @@ static int ice_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
 	return 0;
 }
 
+/**
+ * ice_xdp_rx_ctag - VLAN tag XDP hint handler
+ * @ctx: XDP buff pointer
+ * @vlan_tag: destination address
+ *
+ * Copy VLAN tag (if was stripped) to the destination address.
+ */
+static int ice_xdp_rx_ctag(const struct xdp_md *ctx, u16 *vlan_tag)
+{
+	const struct ice_xdp_buff *xdp_ext = (void *)ctx;
+	netdev_features_t features;
+
+	features = xdp_ext->rx_ring->netdev->features;
+
+	if (!(features & NETIF_F_HW_VLAN_CTAG_RX))
+		return -EINVAL;
+
+	*vlan_tag = ice_get_vlan_tag_from_rx_desc(xdp_ext->eop_desc);
+	return 0;
+}
+
+/**
+ * ice_xdp_rx_stag - VLAN s-tag XDP hint handler
+ * @ctx: XDP buff pointer
+ * @vlan_tag: destination address
+ *
+ * Copy VLAN s-tag (if was stripped) to the destination address.
+ */
+static int ice_xdp_rx_stag(const struct xdp_md *ctx, u16 *vlan_tag)
+{
+	const struct ice_xdp_buff *xdp_ext = (void *)ctx;
+	netdev_features_t features;
+
+	features = xdp_ext->rx_ring->netdev->features;
+
+	if (!(features & NETIF_F_HW_VLAN_STAG_RX))
+		return -EINVAL;
+
+	*vlan_tag = ice_get_vlan_tag_from_rx_desc(xdp_ext->eop_desc);
+	return 0;
+}
+
 const struct xdp_metadata_ops ice_xdp_md_ops = {
 	.xmo_rx_timestamp		= ice_xdp_rx_hw_ts,
 	.xmo_rx_hash			= ice_xdp_rx_hash,
+	.xmo_rx_ctag			= ice_xdp_rx_ctag,
+	.xmo_rx_stag			= ice_xdp_rx_stag,
 };
-- 
2.35.3


  parent reply	other threads:[~2023-05-12 15:20 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-12 15:16 [xdp-hints] [PATCH bpf-next 00/15] new kfunc XDP hints and ice implementation Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 01/15] ice: make RX hash reading code more reusable Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 02/15] ice: make RX HW timestamp " Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 03/15] ice: make RX checksum checking " Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 04/15] ice: Make ptype internal to descriptor info processing Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 05/15] ice: Introduce ice_xdp_buff Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 06/15] ice: Support HW timestamp hint Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 07/15] ice: Support RX hash XDP hint Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 08/15] ice: Support XDP hints in AF_XDP ZC mode Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 09/15] xdp: Add VLAN tag hint Larysa Zaremba
2023-05-12 15:16 ` Larysa Zaremba [this message]
2023-05-12 15:16 ` [xdp-hints] [PATCH 11/15] xdp: Add checksum level hint Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 12/15] ice: Implement " Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 13/15] selftests/bpf: Allow VLAN packets in xdp_hw_metadata Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 14/15] net, xdp: allow metadata > 32 Larysa Zaremba
2023-05-12 15:16 ` [xdp-hints] [PATCH 15/15] selftests/bpf: Add flags and new hints to xdp_hw_metadata Larysa Zaremba

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