maep->em_max_n_action_prios =
MCDI_OUT_DWORD(req, MAE_GET_CAPS_OUT_ACTION_PRIOS);
+ maep->em_max_nfields =
+ MCDI_OUT_DWORD(req, MAE_GET_CAPS_OUT_MATCH_FIELD_COUNT);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+ return (rc);
+}
+
+static __checkReturn efx_rc_t
+efx_mae_get_action_rule_caps(
+ __in efx_nic_t *enp,
+ __in unsigned int field_ncaps,
+ __out_ecount(field_ncaps) efx_mae_field_cap_t *field_caps)
+{
+ efx_mcdi_req_t req;
+ EFX_MCDI_DECLARE_BUF(payload,
+ MC_CMD_MAE_GET_AR_CAPS_IN_LEN,
+ MC_CMD_MAE_GET_AR_CAPS_OUT_LENMAX_MCDI2);
+ unsigned int mcdi_field_ncaps;
+ unsigned int i;
+ efx_rc_t rc;
+
+ if (MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(field_ncaps) >
+ MC_CMD_MAE_GET_AR_CAPS_OUT_LENMAX_MCDI2) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ req.emr_cmd = MC_CMD_MAE_GET_AR_CAPS;
+ req.emr_in_buf = payload;
+ req.emr_in_length = MC_CMD_MAE_GET_AR_CAPS_IN_LEN;
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(field_ncaps);
+
+ efx_mcdi_execute(enp, &req);
+
+ if (req.emr_rc != 0) {
+ rc = req.emr_rc;
+ goto fail2;
+ }
+
+ mcdi_field_ncaps = MCDI_OUT_DWORD(req, MAE_GET_OR_CAPS_OUT_COUNT);
+
+ if (req.emr_out_length_used <
+ MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(mcdi_field_ncaps)) {
+ rc = EMSGSIZE;
+ goto fail3;
+ }
+
+ if (mcdi_field_ncaps > field_ncaps) {
+ rc = EMSGSIZE;
+ goto fail4;
+ }
+
+ for (i = 0; i < mcdi_field_ncaps; ++i) {
+ uint32_t match_flag;
+ uint32_t mask_flag;
+
+ field_caps[i].emfc_support = MCDI_OUT_INDEXED_DWORD_FIELD(req,
+ MAE_GET_AR_CAPS_OUT_FIELD_FLAGS, i,
+ MAE_FIELD_FLAGS_SUPPORT_STATUS);
+
+ match_flag = MCDI_OUT_INDEXED_DWORD_FIELD(req,
+ MAE_GET_AR_CAPS_OUT_FIELD_FLAGS, i,
+ MAE_FIELD_FLAGS_MATCH_AFFECTS_CLASS);
+
+ field_caps[i].emfc_match_affects_class =
+ (match_flag != 0) ? B_TRUE : B_FALSE;
+
+ mask_flag = MCDI_OUT_INDEXED_DWORD_FIELD(req,
+ MAE_GET_AR_CAPS_OUT_FIELD_FLAGS, i,
+ MAE_FIELD_FLAGS_MASK_AFFECTS_CLASS);
+
+ field_caps[i].emfc_mask_affects_class =
+ (mask_flag != 0) ? B_TRUE : B_FALSE;
+ }
+
return (0);
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
__in efx_nic_t *enp)
{
const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
+ efx_mae_field_cap_t *ar_fcaps;
+ size_t ar_fcaps_size;
efx_mae_t *maep;
efx_rc_t rc;
if (rc != 0)
goto fail3;
+ ar_fcaps_size = maep->em_max_nfields * sizeof (*ar_fcaps);
+ EFSYS_KMEM_ALLOC(enp->en_esip, ar_fcaps_size, ar_fcaps);
+ if (ar_fcaps == NULL) {
+ rc = ENOMEM;
+ goto fail4;
+ }
+
+ maep->em_action_rule_field_caps_size = ar_fcaps_size;
+ maep->em_action_rule_field_caps = ar_fcaps;
+
+ rc = efx_mae_get_action_rule_caps(enp, maep->em_max_nfields, ar_fcaps);
+ if (rc != 0)
+ goto fail5;
+
return (0);
+fail5:
+ EFSYS_PROBE(fail5);
+ EFSYS_KMEM_FREE(enp->en_esip, ar_fcaps_size, ar_fcaps);
+fail4:
+ EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
EFSYS_KMEM_FREE(enp->en_esip, sizeof (struct efx_mae_s), enp->en_maep);
if (encp->enc_mae_supported == B_FALSE)
return;
+ EFSYS_KMEM_FREE(enp->en_esip, maep->em_action_rule_field_caps_size,
+ maep->em_action_rule_field_caps);
EFSYS_KMEM_FREE(enp->en_esip, sizeof (*maep), maep);
enp->en_maep = NULL;
}
EFSYS_KMEM_FREE(enp->en_esip, sizeof (*spec), spec);
}
+/* Named identifiers which are valid indices to efx_mae_field_cap_t */
+typedef enum efx_mae_field_cap_id_e {
+ EFX_MAE_FIELD_CAP_NIDS
+} efx_mae_field_cap_id_t;
+
+typedef enum efx_mae_field_endianness_e {
+ EFX_MAE_FIELD_LE = 0,
+ EFX_MAE_FIELD_BE,
+
+ EFX_MAE_FIELD_ENDIANNESS_NTYPES
+} efx_mae_field_endianness_t;
+
+/*
+ * The following structure is a means to describe an MAE field.
+ * The information in it is meant to be used internally by
+ * APIs for addressing a given field in a mask-value pairs
+ * structure and for validation purposes.
+ */
+typedef struct efx_mae_mv_desc_s {
+ efx_mae_field_cap_id_t emmd_field_cap_id;
+
+ size_t emmd_value_size;
+ size_t emmd_value_offset;
+ size_t emmd_mask_size;
+ size_t emmd_mask_offset;
+
+ efx_mae_field_endianness_t emmd_endianness;
+} efx_mae_mv_desc_t;
+
+/* Indices to this array are provided by efx_mae_field_id_t */
+static const efx_mae_mv_desc_t __efx_mae_action_rule_mv_desc_set[] = {
+};
+
+#define EFX_MASK_BIT_IS_SET(_mask, _mask_page_nbits, _bit) \
+ ((_mask)[(_bit) / (_mask_page_nbits)] & \
+ (1ULL << ((_bit) & ((_mask_page_nbits) - 1))))
+
+static inline boolean_t
+efx_mask_is_prefix(
+ __in size_t mask_nbytes,
+ __in_bcount(mask_nbytes) const uint8_t *maskp)
+{
+ boolean_t prev_bit_is_set = B_TRUE;
+ unsigned int i;
+
+ for (i = 0; i < 8 * mask_nbytes; ++i) {
+ boolean_t bit_is_set = EFX_MASK_BIT_IS_SET(maskp, 8, i);
+
+ if (!prev_bit_is_set && bit_is_set)
+ return B_FALSE;
+
+ prev_bit_is_set = bit_is_set;
+ }
+
+ return B_TRUE;
+}
+
+static inline boolean_t
+efx_mask_is_all_ones(
+ __in size_t mask_nbytes,
+ __in_bcount(mask_nbytes) const uint8_t *maskp)
+{
+ unsigned int i;
+ uint8_t t = ~0;
+
+ for (i = 0; i < mask_nbytes; ++i)
+ t &= maskp[i];
+
+ return (t == (uint8_t)(~0));
+}
+
+static inline boolean_t
+efx_mask_is_all_zeros(
+ __in size_t mask_nbytes,
+ __in_bcount(mask_nbytes) const uint8_t *maskp)
+{
+ unsigned int i;
+ uint8_t t = 0;
+
+ for (i = 0; i < mask_nbytes; ++i)
+ t |= maskp[i];
+
+ return (t == 0);
+}
+
+ __checkReturn boolean_t
+efx_mae_match_spec_is_valid(
+ __in efx_nic_t *enp,
+ __in const efx_mae_match_spec_t *spec)
+{
+ efx_mae_t *maep = enp->en_maep;
+ unsigned int field_ncaps = maep->em_max_nfields;
+ const efx_mae_field_cap_t *field_caps;
+ const efx_mae_mv_desc_t *desc_setp;
+ unsigned int desc_set_nentries;
+ boolean_t is_valid = B_TRUE;
+ efx_mae_field_id_t field_id;
+ const uint8_t *mvp;
+
+ switch (spec->emms_type) {
+ case EFX_MAE_RULE_ACTION:
+ field_caps = maep->em_action_rule_field_caps;
+ desc_setp = __efx_mae_action_rule_mv_desc_set;
+ desc_set_nentries =
+ EFX_ARRAY_SIZE(__efx_mae_action_rule_mv_desc_set);
+ mvp = spec->emms_mask_value_pairs.action;
+ break;
+ default:
+ return (B_FALSE);
+ }
+
+ if (field_caps == NULL)
+ return (B_FALSE);
+
+ for (field_id = 0; field_id < desc_set_nentries; ++field_id) {
+ const efx_mae_mv_desc_t *descp = &desc_setp[field_id];
+ efx_mae_field_cap_id_t field_cap_id = descp->emmd_field_cap_id;
+ const uint8_t *m_buf = mvp + descp->emmd_mask_offset;
+ size_t m_size = descp->emmd_mask_size;
+
+ if (m_size == 0)
+ continue; /* Skip array gap */
+
+ if (field_cap_id >= field_ncaps)
+ break;
+
+ switch (field_caps[field_cap_id].emfc_support) {
+ case MAE_FIELD_SUPPORTED_MATCH_MASK:
+ is_valid = B_TRUE;
+ break;
+ case MAE_FIELD_SUPPORTED_MATCH_PREFIX:
+ is_valid = efx_mask_is_prefix(m_size, m_buf);
+ break;
+ case MAE_FIELD_SUPPORTED_MATCH_OPTIONAL:
+ is_valid = (efx_mask_is_all_ones(m_size, m_buf) ||
+ efx_mask_is_all_zeros(m_size, m_buf));
+ break;
+ case MAE_FIELD_SUPPORTED_MATCH_ALWAYS:
+ is_valid = efx_mask_is_all_ones(m_size, m_buf);
+ break;
+ case MAE_FIELD_SUPPORTED_MATCH_NEVER:
+ case MAE_FIELD_UNSUPPORTED:
+ default:
+ is_valid = efx_mask_is_all_zeros(m_size, m_buf);
+ break;
+ }
+
+ if (is_valid == B_FALSE)
+ break;
+ }
+
+ return (is_valid);
+}
+
#endif /* EFSYS_OPT_MAE */
git.droids-corp.org / dpdk.git / commitdiff