Add packet parsing support for custom L2 headers. Also add support
to include a field from the custom header for flow tag generation.
Introduce a new flow key type NIX_FLOW_KEY_TYPE_CH_LEN_90B which
maps to the NPC_LT_LA_CUSTOM_L2_90B_ETHER layer type. This extracts
a 2-byte field at a 24-byte offset in layer A to be used in flow
tag generation.
Signed-off-by: Satheesh Paul A <psatheesh@marvell.com>
Signed-off-by: Nitin Shetty J <nshettyj@marvell.com>
Link: https://patch.msgid.link/20260715072035.617544-1-nshettyj@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>