nfp: parse metadata prepend before XDP runs

Calling memcpy to shift metadata out of the way for XDP to run
seems like an overkill.  The most common metadata contents are
8 bytes containing type and flow hash.  Simply parse the metadata
before we run XDP.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h
index 052db9208fbb..8302a2d688da 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h
@@ -284,6 +284,12 @@ struct nfp_net_rx_desc {
 
 #define NFP_NET_META_FIELD_MASK GENMASK(NFP_NET_META_FIELD_SIZE - 1, 0)
 
+struct nfp_meta_parsed {
+	u32 hash_type;
+	u32 hash;
+	u32 mark;
+};
+
 struct nfp_net_rx_hash {
 	__be32 hash_type;
 	__be32 hash;