+#if EFSYS_OPT_RX_SCATTER
+ __checkReturn efx_rc_t
+efx_rx_scatter_enable(
+ __in efx_nic_t *enp,
+ __in unsigned int buf_size);
+#endif /* EFSYS_OPT_RX_SCATTER */
+
+/* Handle to represent use of the default RSS context. */
+#define EFX_RSS_CONTEXT_DEFAULT 0xffffffff
+
+#if EFSYS_OPT_RX_SCALE
+
+typedef enum efx_rx_hash_alg_e {
+ EFX_RX_HASHALG_LFSR = 0,
+ EFX_RX_HASHALG_TOEPLITZ,
+ EFX_RX_HASHALG_PACKED_STREAM,
+ EFX_RX_NHASHALGS
+} efx_rx_hash_alg_t;
+
+/*
+ * Legacy hash type flags.
+ *
+ * They represent standard tuples for distinct traffic classes.
+ */
+#define EFX_RX_HASH_IPV4 (1U << 0)
+#define EFX_RX_HASH_TCPIPV4 (1U << 1)
+#define EFX_RX_HASH_IPV6 (1U << 2)
+#define EFX_RX_HASH_TCPIPV6 (1U << 3)
+
+#define EFX_RX_HASH_LEGACY_MASK \
+ (EFX_RX_HASH_IPV4 | \
+ EFX_RX_HASH_TCPIPV4 | \
+ EFX_RX_HASH_IPV6 | \
+ EFX_RX_HASH_TCPIPV6)
+
+/*
+ * The type of the argument used by efx_rx_scale_mode_set() to
+ * provide a means for the client drivers to configure hashing.
+ *
+ * A properly constructed value can either be:
+ * - a combination of legacy flags
+ * - a combination of EFX_RX_HASH() flags
+ */
+typedef unsigned int efx_rx_hash_type_t;
+
+typedef enum efx_rx_hash_support_e {
+ EFX_RX_HASH_UNAVAILABLE = 0, /* Hardware hash not inserted */
+ EFX_RX_HASH_AVAILABLE /* Insert hash with/without RSS */
+} efx_rx_hash_support_t;
+
+#define EFX_RSS_KEY_SIZE 40 /* RSS key size (bytes) */
+#define EFX_RSS_TBL_SIZE 128 /* Rows in RX indirection table */
+#define EFX_MAXRSS 64 /* RX indirection entry range */
+#define EFX_MAXRSS_LEGACY 16 /* See bug16611 and bug17213 */
+
+typedef enum efx_rx_scale_context_type_e {
+ EFX_RX_SCALE_UNAVAILABLE = 0, /* No RX scale context */
+ EFX_RX_SCALE_EXCLUSIVE, /* Writable key/indirection table */
+ EFX_RX_SCALE_SHARED /* Read-only key/indirection table */
+} efx_rx_scale_context_type_t;
+
+/*
+ * Traffic classes eligible for hash computation.
+ *
+ * Select packet headers used in computing the receive hash.
+ * This uses the same encoding as the RSS_MODES field of
+ * MC_CMD_RSS_CONTEXT_SET_FLAGS.
+ */
+#define EFX_RX_CLASS_IPV4_TCP_LBN 8
+#define EFX_RX_CLASS_IPV4_TCP_WIDTH 4
+#define EFX_RX_CLASS_IPV4_UDP_LBN 12
+#define EFX_RX_CLASS_IPV4_UDP_WIDTH 4
+#define EFX_RX_CLASS_IPV4_LBN 16
+#define EFX_RX_CLASS_IPV4_WIDTH 4
+#define EFX_RX_CLASS_IPV6_TCP_LBN 20
+#define EFX_RX_CLASS_IPV6_TCP_WIDTH 4
+#define EFX_RX_CLASS_IPV6_UDP_LBN 24
+#define EFX_RX_CLASS_IPV6_UDP_WIDTH 4
+#define EFX_RX_CLASS_IPV6_LBN 28
+#define EFX_RX_CLASS_IPV6_WIDTH 4
+
+#define EFX_RX_NCLASSES 6
+
+/*
+ * Ancillary flags used to construct generic hash tuples.
+ * This uses the same encoding as RSS_MODE_HASH_SELECTOR.
+ */
+#define EFX_RX_CLASS_HASH_SRC_ADDR (1U << 0)
+#define EFX_RX_CLASS_HASH_DST_ADDR (1U << 1)
+#define EFX_RX_CLASS_HASH_SRC_PORT (1U << 2)
+#define EFX_RX_CLASS_HASH_DST_PORT (1U << 3)
+
+/*
+ * Generic hash tuples.
+ *
+ * They express combinations of packet fields
+ * which can contribute to the hash value for
+ * a particular traffic class.
+ */
+#define EFX_RX_CLASS_HASH_DISABLE 0
+
+#define EFX_RX_CLASS_HASH_1TUPLE_SRC EFX_RX_CLASS_HASH_SRC_ADDR
+#define EFX_RX_CLASS_HASH_1TUPLE_DST EFX_RX_CLASS_HASH_DST_ADDR
+
+#define EFX_RX_CLASS_HASH_2TUPLE \
+ (EFX_RX_CLASS_HASH_SRC_ADDR | \
+ EFX_RX_CLASS_HASH_DST_ADDR)
+
+#define EFX_RX_CLASS_HASH_2TUPLE_SRC \
+ (EFX_RX_CLASS_HASH_SRC_ADDR | \
+ EFX_RX_CLASS_HASH_SRC_PORT)
+
+#define EFX_RX_CLASS_HASH_2TUPLE_DST \
+ (EFX_RX_CLASS_HASH_DST_ADDR | \
+ EFX_RX_CLASS_HASH_DST_PORT)
+
+#define EFX_RX_CLASS_HASH_4TUPLE \
+ (EFX_RX_CLASS_HASH_SRC_ADDR | \
+ EFX_RX_CLASS_HASH_DST_ADDR | \
+ EFX_RX_CLASS_HASH_SRC_PORT | \
+ EFX_RX_CLASS_HASH_DST_PORT)
+
+#define EFX_RX_CLASS_HASH_NTUPLES 7
+
+/*
+ * Hash flag constructor.
+ *
+ * Resulting flags encode hash tuples for specific traffic classes.
+ * The client drivers are encouraged to use these flags to form
+ * a hash type value.
+ */
+#define EFX_RX_HASH(_class, _tuple) \
+ EFX_INSERT_FIELD_NATIVE32(0, 31, \
+ EFX_RX_CLASS_##_class, EFX_RX_CLASS_HASH_##_tuple)
+
+/*
+ * The maximum number of EFX_RX_HASH() flags.
+ */
+#define EFX_RX_HASH_NFLAGS (EFX_RX_NCLASSES * EFX_RX_CLASS_HASH_NTUPLES)
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_hash_flags_get(
+ __in efx_nic_t *enp,
+ __in efx_rx_hash_alg_t hash_alg,
+ __inout_ecount(EFX_RX_HASH_NFLAGS) unsigned int *flags,
+ __out unsigned int *nflagsp);
+
+extern __checkReturn efx_rc_t
+efx_rx_hash_default_support_get(
+ __in efx_nic_t *enp,
+ __out efx_rx_hash_support_t *supportp);
+
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_default_support_get(
+ __in efx_nic_t *enp,
+ __out efx_rx_scale_context_type_t *typep);
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_context_alloc(
+ __in efx_nic_t *enp,
+ __in efx_rx_scale_context_type_t type,
+ __in uint32_t num_queues,
+ __out uint32_t *rss_contextp);
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_context_free(
+ __in efx_nic_t *enp,
+ __in uint32_t rss_context);
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_mode_set(
+ __in efx_nic_t *enp,
+ __in uint32_t rss_context,
+ __in efx_rx_hash_alg_t alg,
+ __in efx_rx_hash_type_t type,
+ __in boolean_t insert);
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_tbl_set(
+ __in efx_nic_t *enp,
+ __in uint32_t rss_context,
+ __in_ecount(n) unsigned int *table,
+ __in size_t n);
+
+extern __checkReturn efx_rc_t
+efx_rx_scale_key_set(
+ __in efx_nic_t *enp,
+ __in uint32_t rss_context,
+ __in_ecount(n) uint8_t *key,
+ __in size_t n);
+
+extern __checkReturn uint32_t
+efx_pseudo_hdr_hash_get(
+ __in efx_rxq_t *erp,
+ __in efx_rx_hash_alg_t func,
+ __in uint8_t *buffer);
+
+#endif /* EFSYS_OPT_RX_SCALE */
+