net/bnxt: fix Rx completion ring size calculation

[dpdk.git] / drivers / net / bnxt / bnxt_ring.c

diff --git a/drivers/net/bnxt/bnxt_ring.c b/drivers/net/bnxt/bnxt_ring.c
index 4e51324..ba23c1f 100644 (file)
--- a/drivers/net/bnxt/bnxt_ring.c
+++ b/drivers/net/bnxt/bnxt_ring.c
@@ -583,6 +583,17 @@ int bnxt_alloc_hwrm_rx_ring(struct bnxt *bp, int queue_index)
        struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
        int rc;
 
+       /*
+        * Storage for the cp ring is allocated based on worst-case
+        * usage, the actual size to be used by hw is computed here.
+        */
+       cp_ring->ring_size = rxr->rx_ring_struct->ring_size * 2;
+
+       if (bp->eth_dev->data->scattered_rx)
+               cp_ring->ring_size *= AGG_RING_SIZE_FACTOR;
+
+       cp_ring->ring_mask = cp_ring->ring_size - 1;
+
        rc = bnxt_alloc_cmpl_ring(bp, queue_index, cpr);
        if (rc)
                goto err_out;
@@ -693,6 +704,17 @@ int bnxt_alloc_hwrm_rings(struct bnxt *bp)
                struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
                struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 
+               /*
+                * Storage for the cp ring is allocated based on worst-case
+                * usage, the actual size to be used by hw is computed here.
+                */
+               cp_ring->ring_size = rxr->rx_ring_struct->ring_size * 2;
+
+               if (bp->eth_dev->data->scattered_rx)
+                       cp_ring->ring_size *= AGG_RING_SIZE_FACTOR;
+
+               cp_ring->ring_mask = cp_ring->ring_size - 1;
+
                if (bnxt_alloc_cmpl_ring(bp, i, cpr))
                        goto err_out;