net/failsafe: fix crash on slave queue release

[dpdk.git] / drivers / net / sfc / sfc_ef10_essb_rx.c

diff --git a/drivers/net/sfc/sfc_ef10_essb_rx.c b/drivers/net/sfc/sfc_ef10_essb_rx.c
index 000de2e..81c8f7f 100644 (file)
--- a/drivers/net/sfc/sfc_ef10_essb_rx.c
+++ b/drivers/net/sfc/sfc_ef10_essb_rx.c
@@ -411,21 +411,45 @@ sfc_ef10_essb_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 
 static sfc_dp_rx_qdesc_npending_t sfc_ef10_essb_rx_qdesc_npending;
 static unsigned int
-sfc_ef10_essb_rx_qdesc_npending(__rte_unused struct sfc_dp_rxq *dp_rxq)
+sfc_ef10_essb_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
 {
-       /*
-        * Correct implementation requires EvQ polling and events
-        * processing.
-        */
-       return -ENOTSUP;
+       struct sfc_ef10_essb_rxq *rxq = sfc_ef10_essb_rxq_by_dp_rxq(dp_rxq);
+       const unsigned int evq_old_read_ptr = rxq->evq_read_ptr;
+       efx_qword_t rx_ev;
+
+       if (unlikely(rxq->flags & (SFC_EF10_ESSB_RXQ_NOT_RUNNING |
+                                  SFC_EF10_ESSB_RXQ_EXCEPTION)))
+               return rxq->bufs_pending;
+
+       while (sfc_ef10_essb_rx_event_get(rxq, &rx_ev)) {
+               /*
+                * DROP_EVENT is an internal to the NIC, software should
+                * never see it and, therefore, may ignore it.
+                */
+               sfc_ef10_essb_rx_process_ev(rxq, rx_ev);
+       }
+
+       sfc_ef10_ev_qclear(rxq->evq_hw_ring, rxq->evq_ptr_mask,
+                          evq_old_read_ptr, rxq->evq_read_ptr);
+
+       return rxq->bufs_pending;
 }
 
 static sfc_dp_rx_qdesc_status_t sfc_ef10_essb_rx_qdesc_status;
 static int
-sfc_ef10_essb_rx_qdesc_status(__rte_unused struct sfc_dp_rxq *dp_rxq,
-                             __rte_unused uint16_t offset)
+sfc_ef10_essb_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
 {
-       return -ENOTSUP;
+       struct sfc_ef10_essb_rxq *rxq = sfc_ef10_essb_rxq_by_dp_rxq(dp_rxq);
+       unsigned int pending = sfc_ef10_essb_rx_qdesc_npending(dp_rxq);
+
+       if (offset < pending)
+               return RTE_ETH_RX_DESC_DONE;
+
+       if (offset < (rxq->added - rxq->completed) * rxq->block_size +
+                    rxq->left_in_completed - rxq->block_size)
+               return RTE_ETH_RX_DESC_AVAIL;
+
+       return RTE_ETH_RX_DESC_UNAVAIL;
 }
 
 static sfc_dp_rx_get_dev_info_t sfc_ef10_essb_rx_get_dev_info;
@@ -681,7 +705,8 @@ struct sfc_dp_rx sfc_ef10_essb_rx = {
                                  SFC_DP_HW_FW_CAP_RX_ES_SUPER_BUFFER,
        },
        .features               = SFC_DP_RX_FEAT_FLOW_FLAG |
-                                 SFC_DP_RX_FEAT_FLOW_MARK,
+                                 SFC_DP_RX_FEAT_FLOW_MARK |
+                                 SFC_DP_RX_FEAT_CHECKSUM,
        .get_dev_info           = sfc_ef10_essb_rx_get_dev_info,
        .pool_ops_supported     = sfc_ef10_essb_rx_pool_ops_supported,
        .qsize_up_rings         = sfc_ef10_essb_rx_qsize_up_rings,