+/*
+ * Mapping between RTE RSS hash functions and their EFX counterparts.
+ */
+static const struct sfc_rss_hf_rte_to_efx sfc_rss_hf_map[] = {
+ { ETH_RSS_NONFRAG_IPV4_TCP,
+ EFX_RX_HASH(IPV4_TCP, 4TUPLE) },
+ { ETH_RSS_NONFRAG_IPV4_UDP,
+ EFX_RX_HASH(IPV4_UDP, 4TUPLE) },
+ { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_IPV6_TCP_EX,
+ EFX_RX_HASH(IPV6_TCP, 4TUPLE) },
+ { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_IPV6_UDP_EX,
+ EFX_RX_HASH(IPV6_UDP, 4TUPLE) },
+ { ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | ETH_RSS_NONFRAG_IPV4_OTHER,
+ EFX_RX_HASH(IPV4_TCP, 2TUPLE) | EFX_RX_HASH(IPV4_UDP, 2TUPLE) |
+ EFX_RX_HASH(IPV4, 2TUPLE) },
+ { ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_OTHER |
+ ETH_RSS_IPV6_EX,
+ EFX_RX_HASH(IPV6_TCP, 2TUPLE) | EFX_RX_HASH(IPV6_UDP, 2TUPLE) |
+ EFX_RX_HASH(IPV6, 2TUPLE) }
+};
+
+static efx_rx_hash_type_t
+sfc_rx_hash_types_mask_supp(efx_rx_hash_type_t hash_type,
+ unsigned int *hash_type_flags_supported,
+ unsigned int nb_hash_type_flags_supported)
+{
+ efx_rx_hash_type_t hash_type_masked = 0;
+ unsigned int i, j;
+
+ for (i = 0; i < nb_hash_type_flags_supported; ++i) {
+ unsigned int class_tuple_lbn[] = {
+ EFX_RX_CLASS_IPV4_TCP_LBN,
+ EFX_RX_CLASS_IPV4_UDP_LBN,
+ EFX_RX_CLASS_IPV4_LBN,
+ EFX_RX_CLASS_IPV6_TCP_LBN,
+ EFX_RX_CLASS_IPV6_UDP_LBN,
+ EFX_RX_CLASS_IPV6_LBN
+ };
+
+ for (j = 0; j < RTE_DIM(class_tuple_lbn); ++j) {
+ unsigned int tuple_mask = EFX_RX_CLASS_HASH_4TUPLE;
+ unsigned int flag;
+
+ tuple_mask <<= class_tuple_lbn[j];
+ flag = hash_type & tuple_mask;
+
+ if (flag == hash_type_flags_supported[i])
+ hash_type_masked |= flag;
+ }
+ }
+
+ return hash_type_masked;