+#if EFSYS_OPT_RX_PACKED_STREAM
+
+ void
+ef10_rx_qpush_ps_credits(
+ __in efx_rxq_t *erp)
+{
+ efx_nic_t *enp = erp->er_enp;
+ efx_dword_t dword;
+ efx_evq_rxq_state_t *rxq_state = erp->er_ev_qstate;
+ uint32_t credits;
+
+ EFSYS_ASSERT(rxq_state->eers_rx_packed_stream);
+
+ if (rxq_state->eers_rx_packed_stream_credits == 0)
+ return;
+
+ /*
+ * It is a bug if we think that FW has utilized more
+ * credits than it is allowed to have (maximum). However,
+ * make sure that we do not credit more than maximum anyway.
+ */
+ credits = MIN(rxq_state->eers_rx_packed_stream_credits,
+ EFX_RX_PACKED_STREAM_MAX_CREDITS);
+ EFX_POPULATE_DWORD_3(dword,
+ ERF_DZ_RX_DESC_MAGIC_DOORBELL, 1,
+ ERF_DZ_RX_DESC_MAGIC_CMD,
+ ERE_DZ_RX_DESC_MAGIC_CMD_PS_CREDITS,
+ ERF_DZ_RX_DESC_MAGIC_DATA, credits);
+ EFX_BAR_TBL_WRITED(enp, ER_DZ_RX_DESC_UPD_REG,
+ erp->er_index, &dword, B_FALSE);
+
+ rxq_state->eers_rx_packed_stream_credits = 0;
+}
+
+/*
+ * In accordance with SF-112241-TC the received data has the following layout:
+ * - 8 byte pseudo-header which consist of:
+ * - 4 byte little-endian timestamp
+ * - 2 byte little-endian captured length in bytes
+ * - 2 byte little-endian original packet length in bytes
+ * - captured packet bytes
+ * - optional padding to align to 64 bytes boundary
+ * - 64 bytes scratch space for the host software
+ */
+ __checkReturn uint8_t *
+ef10_rx_qps_packet_info(
+ __in efx_rxq_t *erp,
+ __in uint8_t *buffer,
+ __in uint32_t buffer_length,
+ __in uint32_t current_offset,
+ __out uint16_t *lengthp,
+ __out uint32_t *next_offsetp,
+ __out uint32_t *timestamp)
+{
+ uint16_t buf_len;
+ uint8_t *pkt_start;
+ efx_qword_t *qwordp;
+ efx_evq_rxq_state_t *rxq_state = erp->er_ev_qstate;
+
+ EFSYS_ASSERT(rxq_state->eers_rx_packed_stream);
+
+ buffer += current_offset;
+ pkt_start = buffer + EFX_RX_PACKED_STREAM_RX_PREFIX_SIZE;
+
+ qwordp = (efx_qword_t *)buffer;
+ *timestamp = EFX_QWORD_FIELD(*qwordp, ES_DZ_PS_RX_PREFIX_TSTAMP);
+ *lengthp = EFX_QWORD_FIELD(*qwordp, ES_DZ_PS_RX_PREFIX_ORIG_LEN);
+ buf_len = EFX_QWORD_FIELD(*qwordp, ES_DZ_PS_RX_PREFIX_CAP_LEN);
+
+ buf_len = P2ROUNDUP(buf_len + EFX_RX_PACKED_STREAM_RX_PREFIX_SIZE,
+ EFX_RX_PACKED_STREAM_ALIGNMENT);
+ *next_offsetp =
+ current_offset + buf_len + EFX_RX_PACKED_STREAM_ALIGNMENT;
+
+ EFSYS_ASSERT3U(*next_offsetp, <=, buffer_length);
+ EFSYS_ASSERT3U(current_offset + *lengthp, <, *next_offsetp);
+
+ if ((*next_offsetp ^ current_offset) &
+ EFX_RX_PACKED_STREAM_MEM_PER_CREDIT)
+ rxq_state->eers_rx_packed_stream_credits++;
+
+ return (pkt_start);
+}
+
+
+#endif
+