diff mbox series

[12/15] ice: Implement checksum level hint

Message ID 20230512151639.992033-13-larysa.zaremba@intel.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series new kfunc XDP hints and ice implementation | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR pending PR summary
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
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 4 maintainers not CCed: hawk@kernel.org edumazet@google.com davem@davemloft.net pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
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, 45 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Larysa Zaremba May 12, 2023, 3:16 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 | 24 ++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)
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 39547feb6106..6a3ec925f20d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
@@ -161,6 +161,8 @@  ice_rx_csum_checked(union ice_32b_rx_flex_desc *rx_desc, u16 ptype,
 	 */
 	if (decoded.tunnel_type >= ICE_RX_PTYPE_TUNNEL_IP_GRENAT)
 		*csum_lvl_dst = 1;
+	else
+		*csum_lvl_dst = 0;
 
 	/* Only report checksum unnecessary for TCP, UDP, or SCTP */
 	switch (decoded.inner_prot) {
@@ -190,7 +192,7 @@  static void
 ice_rx_csum_into_skb(struct ice_rx_ring *ring, struct sk_buff *skb,
 		     union ice_32b_rx_flex_desc *rx_desc, u16 ptype)
 {
-	u8 csum_level = 0;
+	u8 csum_level;
 
 	/* Start with CHECKSUM_NONE and by default csum_level = 0 */
 	skb->ip_summed = CHECKSUM_NONE;
@@ -669,9 +671,29 @@  static int ice_xdp_rx_stag(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;
+	u16 ptype = ice_get_ptype(xdp_ext->eop_desc);
+
+	if (!ice_rx_csum_checked(xdp_ext->eop_desc, ptype, csum_lvl,
+				 xdp_ext->rx_ring))
+		return -EOPNOTSUPP;
+
+	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,
+	.xmo_rx_csum_lvl		= ice_xdp_rx_csum_lvl,
 };