net/sfc: support Rx descriptor status for EF10 ESSB datapath

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>

diff --git a/drivers/net/sfc/sfc_ef10_essb_rx.c b/drivers/net/sfc/sfc_ef10_essb_rx.c
index 8428a31..3e0c7fd 100644 (file)
--- a/drivers/net/sfc/sfc_ef10_essb_rx.c
+++ b/drivers/net/sfc/sfc_ef10_essb_rx.c
@@ -437,10 +437,19 @@ sfc_ef10_essb_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
 
 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;