New upstream version 18.08

[deb_dpdk.git] / drivers / net / fm10k / fm10k_rxtx.c

diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index 9320748..4a5b46e 100644 (file)
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -389,6 +389,84 @@ fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
        return ret;
 }
 
+int
+fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+       volatile union fm10k_rx_desc *rxdp;
+       struct fm10k_rx_queue *rxq = rx_queue;
+       uint16_t nb_hold, trigger_last;
+       uint16_t desc;
+       int ret;
+
+       if (unlikely(offset >= rxq->nb_desc)) {
+               PMD_DRV_LOG(ERR, "Invalid RX descriptor offset %u", offset);
+               return 0;
+       }
+
+       if (rxq->next_trigger < rxq->alloc_thresh)
+               trigger_last = rxq->next_trigger +
+                                       rxq->nb_desc - rxq->alloc_thresh;
+       else
+               trigger_last = rxq->next_trigger - rxq->alloc_thresh;
+
+       if (rxq->next_dd < trigger_last)
+               nb_hold = rxq->next_dd + rxq->nb_desc - trigger_last;
+       else
+               nb_hold = rxq->next_dd - trigger_last;
+
+       if (offset >= rxq->nb_desc - nb_hold)
+               return RTE_ETH_RX_DESC_UNAVAIL;
+
+       desc = rxq->next_dd + offset;
+       if (desc >= rxq->nb_desc)
+               desc -= rxq->nb_desc;
+
+       rxdp = &rxq->hw_ring[desc];
+
+       ret = !!(rxdp->w.status &
+                       rte_cpu_to_le_16(FM10K_RXD_STATUS_DD));
+
+       return ret;
+}
+
+int
+fm10k_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+       volatile struct fm10k_tx_desc *txdp;
+       struct fm10k_tx_queue *txq = tx_queue;
+       uint16_t desc;
+       uint16_t next_rs = txq->nb_desc;
+       struct fifo rs_tracker = txq->rs_tracker;
+       struct fifo *r = &rs_tracker;
+
+       if (unlikely(offset >= txq->nb_desc))
+               return -EINVAL;
+
+       desc = txq->next_free + offset;
+       /* go to next desc that has the RS bit */
+       desc = (desc / txq->rs_thresh + 1) *
+               txq->rs_thresh - 1;
+
+       if (desc >= txq->nb_desc) {
+               desc -= txq->nb_desc;
+               if (desc >= txq->nb_desc)
+                       desc -= txq->nb_desc;
+       }
+
+       r->head = r->list;
+       for ( ; r->head != r->endp; ) {
+               if (*r->head >= desc && *r->head < next_rs)
+                       next_rs = *r->head;
+               ++r->head;
+       }
+
+       txdp = &txq->hw_ring[next_rs];
+       if (txdp->flags & FM10K_TXD_FLAG_DONE)
+               return RTE_ETH_TX_DESC_DONE;
+
+       return RTE_ETH_TX_DESC_FULL;
+}
+
 /*
  * Free multiple TX mbuf at a time if they are in the same pool
  *