+static inline uint64_t
+sfc_ef100_rx_nt_or_inner_l4_csum(const efx_word_t class)
+{
+ return EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L4_CSUM) ==
+ ESE_GZ_RH_HCLASS_L4_CSUM_GOOD ?
+ PKT_RX_L4_CKSUM_GOOD : PKT_RX_L4_CKSUM_BAD;
+}
+
+static inline uint64_t
+sfc_ef100_rx_tun_outer_l4_csum(const efx_word_t class)
+{
+ return EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_TUN_OUTER_L4_CSUM) ==
+ ESE_GZ_RH_HCLASS_L4_CSUM_GOOD ?
+ PKT_RX_OUTER_L4_CKSUM_GOOD : PKT_RX_OUTER_L4_CKSUM_GOOD;
+}
+
+static uint32_t
+sfc_ef100_rx_class_decode(const efx_word_t class, uint64_t *ol_flags)
+{
+ uint32_t ptype;
+ bool no_tunnel = false;
+
+ if (unlikely(EFX_WORD_FIELD(class, ESF_GZ_RX_PREFIX_HCLASS_L2_CLASS) !=
+ ESE_GZ_RH_HCLASS_L2_CLASS_E2_0123VLAN))
+ return 0;
+
+ switch (EFX_WORD_FIELD(class, ESF_GZ_RX_PREFIX_HCLASS_L2_N_VLAN)) {
+ case 0:
+ ptype = RTE_PTYPE_L2_ETHER;
+ break;
+ case 1:
+ ptype = RTE_PTYPE_L2_ETHER_VLAN;
+ break;
+ default:
+ ptype = RTE_PTYPE_L2_ETHER_QINQ;
+ break;
+ }
+
+ switch (EFX_WORD_FIELD(class, ESF_GZ_RX_PREFIX_HCLASS_TUNNEL_CLASS)) {
+ case ESE_GZ_RH_HCLASS_TUNNEL_CLASS_NONE:
+ no_tunnel = true;
+ break;
+ case ESE_GZ_RH_HCLASS_TUNNEL_CLASS_VXLAN:
+ ptype |= RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP;
+ *ol_flags |= sfc_ef100_rx_tun_outer_l4_csum(class);
+ break;
+ case ESE_GZ_RH_HCLASS_TUNNEL_CLASS_NVGRE:
+ ptype |= RTE_PTYPE_TUNNEL_NVGRE;
+ break;
+ case ESE_GZ_RH_HCLASS_TUNNEL_CLASS_GENEVE:
+ ptype |= RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP;
+ *ol_flags |= sfc_ef100_rx_tun_outer_l4_csum(class);
+ break;
+ default:
+ /*
+ * Driver does not know the tunnel, but it is
+ * still a tunnel and NT_OR_INNER refer to inner
+ * frame.
+ */
+ no_tunnel = false;
+ }
+
+ if (no_tunnel) {
+ bool l4_valid = true;
+
+ switch (EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L3_CLASS)) {
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4GOOD:
+ ptype |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+ *ol_flags |= PKT_RX_IP_CKSUM_GOOD;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4BAD:
+ ptype |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+ *ol_flags |= PKT_RX_IP_CKSUM_BAD;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP6:
+ ptype |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
+ break;
+ default:
+ l4_valid = false;
+ }
+
+ if (l4_valid) {
+ switch (EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L4_CLASS)) {
+ case ESE_GZ_RH_HCLASS_L4_CLASS_TCP:
+ ptype |= RTE_PTYPE_L4_TCP;
+ *ol_flags |=
+ sfc_ef100_rx_nt_or_inner_l4_csum(class);
+ break;
+ case ESE_GZ_RH_HCLASS_L4_CLASS_UDP:
+ ptype |= RTE_PTYPE_L4_UDP;
+ *ol_flags |=
+ sfc_ef100_rx_nt_or_inner_l4_csum(class);
+ break;
+ case ESE_GZ_RH_HCLASS_L4_CLASS_FRAG:
+ ptype |= RTE_PTYPE_L4_FRAG;
+ break;
+ }
+ }
+ } else {
+ bool l4_valid = true;
+
+ switch (EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_TUN_OUTER_L3_CLASS)) {
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4GOOD:
+ ptype |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4BAD:
+ ptype |= RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
+ *ol_flags |= PKT_RX_EIP_CKSUM_BAD;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP6:
+ ptype |= RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
+ break;
+ }
+
+ switch (EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L3_CLASS)) {
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4GOOD:
+ ptype |= RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN;
+ *ol_flags |= PKT_RX_IP_CKSUM_GOOD;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP4BAD:
+ ptype |= RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN;
+ *ol_flags |= PKT_RX_IP_CKSUM_BAD;
+ break;
+ case ESE_GZ_RH_HCLASS_L3_CLASS_IP6:
+ ptype |= RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN;
+ break;
+ default:
+ l4_valid = false;
+ break;
+ }
+
+ if (l4_valid) {
+ switch (EFX_WORD_FIELD(class,
+ ESF_GZ_RX_PREFIX_HCLASS_NT_OR_INNER_L4_CLASS)) {
+ case ESE_GZ_RH_HCLASS_L4_CLASS_TCP:
+ ptype |= RTE_PTYPE_INNER_L4_TCP;
+ *ol_flags |=
+ sfc_ef100_rx_nt_or_inner_l4_csum(class);
+ break;
+ case ESE_GZ_RH_HCLASS_L4_CLASS_UDP:
+ ptype |= RTE_PTYPE_INNER_L4_UDP;
+ *ol_flags |=
+ sfc_ef100_rx_nt_or_inner_l4_csum(class);
+ break;
+ case ESE_GZ_RH_HCLASS_L4_CLASS_FRAG:
+ ptype |= RTE_PTYPE_INNER_L4_FRAG;
+ break;
+ }
+ }
+ }
+
+ return ptype;
+}
+
+/*
+ * Below function relies on the following fields in Rx prefix.
+ * Some fields are mandatory, some fields are optional.
+ * See sfc_ef100_rx_qstart() below.
+ */
+static const efx_rx_prefix_layout_t sfc_ef100_rx_prefix_layout = {
+ .erpl_fields = {
+#define SFC_EF100_RX_PREFIX_FIELD(_name, _big_endian) \
+ EFX_RX_PREFIX_FIELD(_name, ESF_GZ_RX_PREFIX_ ## _name, _big_endian)
+
+ SFC_EF100_RX_PREFIX_FIELD(LENGTH, B_FALSE),
+ SFC_EF100_RX_PREFIX_FIELD(RSS_HASH_VALID, B_FALSE),
+ SFC_EF100_RX_PREFIX_FIELD(USER_FLAG, B_FALSE),
+ SFC_EF100_RX_PREFIX_FIELD(CLASS, B_FALSE),
+ SFC_EF100_RX_PREFIX_FIELD(RSS_HASH, B_FALSE),
+ SFC_EF100_RX_PREFIX_FIELD(USER_MARK, B_FALSE),
+
+#undef SFC_EF100_RX_PREFIX_FIELD
+ }
+};
+