+ __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 *flagsp,
+ __out unsigned int *nflagsp)
+{
+ efx_nic_cfg_t *encp = &enp->en_nic_cfg;
+ boolean_t l4;
+ boolean_t additional_modes;
+ unsigned int *entryp = flagsp;
+ efx_rc_t rc;
+
+ if (flagsp == NULL || nflagsp == NULL) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ l4 = encp->enc_rx_scale_l4_hash_supported;
+ additional_modes = encp->enc_rx_scale_additional_modes_supported;
+
+#define LIST_FLAGS(_entryp, _class, _l4_hashing, _additional_modes) \
+ do { \
+ if (_l4_hashing) { \
+ *(_entryp++) = EFX_RX_HASH(_class, 4TUPLE); \
+ \
+ if (_additional_modes) { \
+ *(_entryp++) = \
+ EFX_RX_HASH(_class, 2TUPLE_DST); \
+ *(_entryp++) = \
+ EFX_RX_HASH(_class, 2TUPLE_SRC); \
+ } \
+ } \
+ \
+ *(_entryp++) = EFX_RX_HASH(_class, 2TUPLE); \
+ \
+ if (_additional_modes) { \
+ *(_entryp++) = EFX_RX_HASH(_class, 1TUPLE_DST); \
+ *(_entryp++) = EFX_RX_HASH(_class, 1TUPLE_SRC); \
+ } \
+ \
+ *(_entryp++) = EFX_RX_HASH(_class, DISABLE); \
+ \
+ _NOTE(CONSTANTCONDITION) \
+ } while (B_FALSE)
+
+ switch (hash_alg) {
+ case EFX_RX_HASHALG_PACKED_STREAM:
+ if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
+ break;
+ /* FALLTHRU */
+ case EFX_RX_HASHALG_TOEPLITZ:
+ if ((encp->enc_rx_scale_hash_alg_mask & (1U << hash_alg)) == 0)
+ break;
+
+ LIST_FLAGS(entryp, IPV4_TCP, l4, additional_modes);
+ LIST_FLAGS(entryp, IPV6_TCP, l4, additional_modes);
+
+ if (additional_modes) {
+ LIST_FLAGS(entryp, IPV4_UDP, l4, additional_modes);
+ LIST_FLAGS(entryp, IPV6_UDP, l4, additional_modes);
+ }
+
+ LIST_FLAGS(entryp, IPV4, B_FALSE, additional_modes);
+ LIST_FLAGS(entryp, IPV6, B_FALSE, additional_modes);
+ break;
+
+ default:
+ rc = EINVAL;
+ goto fail2;
+ }
+
+#undef LIST_FLAGS
+
+ *nflagsp = (unsigned int)(entryp - flagsp);
+ EFSYS_ASSERT3U(*nflagsp, <=, EFX_RX_HASH_NFLAGS);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+