+/**
+ * IPSEC_N_ENCAP_DPOVRD_L2_LEN_MASK - See IPSEC_N_ENCAP_DPOVRD_L2_LEN_SHIFT
+ */
+#define IPSEC_N_ENCAP_DPOVRD_L2_LEN_MASK \
+ (0xff << IPSEC_N_ENCAP_DPOVRD_L2_LEN_SHIFT)
+
+/**
+ * IPSEC_N_ENCAP_DPOVRD_OIMIF - Outer IP header Material in Input Frame
+ */
+#define IPSEC_N_ENCAP_DPOVRD_OIMIF BIT(15)
+
+/**
+ * IPSEC_N_ENCAP_DPOVRD_L2_COPY - L2 header present in input frame
+ *
+ * Note: For Era <= 8, this bit is reserved (not used) by HW.
+ */
+#define IPSEC_N_ENCAP_DPOVRD_L2_COPY BIT(14)
+
+/**
+ * IPSEC_N_ENCAP_DPOVRD_AOIPHO_SHIFT - Actual Outer IP Header Offset (encap)
+ */
+#define IPSEC_N_ENCAP_DPOVRD_AOIPHO_SHIFT 8
+
+/**
+ * IPSEC_N_ENCAP_DPOVRD_AOIPHO_MASK - See IPSEC_N_ENCAP_DPOVRD_AOIPHO_SHIFT
+ */
+#define IPSEC_N_ENCAP_DPOVRD_AOIPHO_MASK \
+ (0x3c << IPSEC_N_ENCAP_DPOVRD_AOIPHO_SHIFT)
+
+/**
+ * IPSEC_N_ENCAP_DPOVRD_NH_MASK - Next Header
+ *
+ * Used in the Next Header field of the encapsulated payload.
+ */
+#define IPSEC_N_ENCAP_DPOVRD_NH_MASK 0xff
+
+/**
+ * IPSEC_N_DECAP_DPOVRD_AOIPHO_SHIFT - Actual Outer IP Header Offset (decap)
+ */
+#define IPSEC_N_DECAP_DPOVRD_AOIPHO_SHIFT 12
+
+/**
+ * IPSEC_N_DECAP_DPOVRD_AOIPHO_MASK - See IPSEC_N_DECAP_DPOVRD_AOIPHO_SHIFT
+ */
+#define IPSEC_N_DECAP_DPOVRD_AOIPHO_MASK \
+ (0xff << IPSEC_N_DECAP_DPOVRD_AOIPHO_SHIFT)
+
+/**
+ * IPSEC_N_DECAP_DPOVRD_OIM_LEN_MASK - Outer IP header Material length (decap)
+ */
+#define IPSEC_N_DECAP_DPOVRD_OIM_LEN_MASK 0xfff
+
+static inline void __gen_auth_key(struct program *program,
+ struct alginfo *authdata)