diff mbox series

[bpf-next,v2,13/20] ice: Implement checksum level hint

Message ID 20230703181226.19380-14-larysa.zaremba@intel.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series XDP metadata via kfuncs for ice | expand

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netdev/series_format fail Series longer than 15 patches (and no cover letter)
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netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/cc_maintainers warning 7 maintainers not CCed: hawk@kernel.org jesse.brandeburg@intel.com intel-wired-lan@lists.osuosl.org davem@davemloft.net anthony.l.nguyen@intel.com pabeni@redhat.com edumazet@google.com
netdev/build_clang fail Errors and warnings before: 61 this patch: 20
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netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 34 lines checked
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netdev/source_inline success Was 0 now: 0

Commit Message

Larysa Zaremba July 3, 2023, 6:12 p.m. UTC 
Implement .xmo_rx_csum_lvl callback to allow XDP code to determine,
whether checksum was checked by hardware and on what level.

Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
---
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
index e9f334fecdf1..41ab52b6990d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
@@ -660,8 +660,34 @@  static int ice_xdp_rx_vlan_tag(const struct xdp_md *ctx, u16 *vlan_tag,
 	return 0;
 }
 
+/**
+ * ice_xdp_rx_csum_lvl - Get level, at which HW has checked the checksum
+ * @ctx: XDP buff pointer
+ * @csum_lvl: destination address
+ *
+ * Copy HW checksum level (if was checked) to the destination address.
+ */
+static int ice_xdp_rx_csum_lvl(const struct xdp_md *ctx, u8 *csum_lvl)
+{
+	const struct ice_xdp_buff *xdp_ext = (void *)ctx;
+	const union ice_32b_rx_flex_desc *eop_desc;
+	enum ice_rx_csum_status status;
+	u16 ptype;
+
+	eop_desc = xdp_ext->pkt_ctx.eop_desc;
+	ptype = ice_get_ptype(eop_desc);
+
+	status = ice_get_rx_csum_status(eop_desc, ptype);
+	if (status & ICE_RX_CSUM_NONE)
+		return -ENODATA;
+
+	*csum_lvl = ice_rx_csum_lvl(status);
+	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_vlan_tag		= ice_xdp_rx_vlan_tag,
+	.xmo_rx_csum_lvl		= ice_xdp_rx_csum_lvl,
 };