Index: head/sys/dev/sfxge/common/ef10_nic.c
===================================================================
--- head/sys/dev/sfxge/common/ef10_nic.c
+++ head/sys/dev/sfxge/common/ef10_nic.c
@@ -1084,6 +1084,12 @@
 		encp->enc_fw_assisted_tso_v2_n_contexts = 0;
 	}
 
+	/* Check if the firmware supports FATSOv2 encap */
+	if (CAP_FLAGS2(req, TX_TSO_V2_ENCAP))
+		encp->enc_fw_assisted_tso_v2_encap_enabled = B_TRUE;
+	else
+		encp->enc_fw_assisted_tso_v2_encap_enabled = B_FALSE;
+
 	/* Check if the firmware has vadapter/vport/vswitch support */
 	if (CAP_FLAGS1(req, EVB))
 		encp->enc_datapath_cap_evb = B_TRUE;
Index: head/sys/dev/sfxge/common/efx.h
===================================================================
--- head/sys/dev/sfxge/common/efx.h
+++ head/sys/dev/sfxge/common/efx.h
@@ -1258,6 +1258,7 @@
 	uint32_t		enc_tx_tso_tcp_header_offset_limit;
 	boolean_t		enc_fw_assisted_tso_enabled;
 	boolean_t		enc_fw_assisted_tso_v2_enabled;
+	boolean_t		enc_fw_assisted_tso_v2_encap_enabled;
 	/* Number of TSO contexts on the NIC (FATSOv2) */
 	uint32_t		enc_fw_assisted_tso_v2_n_contexts;
 	boolean_t		enc_hw_tx_insert_vlan_enabled;