ibmvnic: Insert header on VLAN tagged received frame

This patch addresses a modification in the PAPR+ specification which now
defines a previously reserved value for vNIC capabilities. It indicates
whether the system firmware performs a VLAN header stripping on all VLAN
tagged received frames, in case it does, the behavior expected is for
the ibmvnic driver to be responsible for inserting the VLAN header.

Reported-by: Manvanthara B. Puttashankar <mputtash@in.ibm.com>
Signed-off-by: Murilo Fossa Vicentini <muvic@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h
index 355225c..387c843 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.h
+++ b/drivers/net/ethernet/ibm/ibmvnic.h
@@ -733,6 +733,7 @@ enum ibmvnic_capabilities {
 	REQ_MTU = 21,
 	MAX_MULTICAST_FILTERS = 22,
 	VLAN_HEADER_INSERTION = 23,
+	RX_VLAN_HEADER_INSERTION = 24,
 	MAX_TX_SG_ENTRIES = 25,
 	RX_SG_SUPPORTED = 26,
 	RX_SG_REQUESTED = 27,
@@ -993,6 +994,7 @@ struct ibmvnic_adapter {
 	u64 req_mtu;
 	u64 max_multicast_filters;
 	u64 vlan_header_insertion;
+	u64 rx_vlan_header_insertion;
 	u64 max_tx_sg_entries;
 	u64 rx_sg_supported;
 	u64 rx_sg_requested;