[dpdk-dev] [PATCH 1/3] net/bnxt: handle Rx multi queue creation properly

[Ajit Khaparde]

This patch simplifies logic for RSS queue creation.
1) Do not hardcode number of VNIC pools in case of RSS
2) Log a message if Number of queues is > RTE_ETHDEV_QUEUE_STAT_CNTRS
3) Move the check for allocation of l2_filter inside the for loop.

Fixes: 6133f207970c ("net/bnxt: add Rx queue create/destroy")

Signed-off-by: Ajit Khaparde <ajit.khapa...@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c |  5 +++++
 drivers/net/bnxt/bnxt_rxq.c    | 18 ++++++------------
 2 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index d3da30189..af7a126bc 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -569,6 +569,11 @@ static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev)
        int vlan_mask = 0;
        int rc;
 
+       if (bp->rx_cp_nr_rings > RTE_ETHDEV_QUEUE_STAT_CNTRS) {
+               RTE_LOG(ERR, PMD,
+                       "RxQ cnt %d > CONFIG_RTE_ETHDEV_QUEUE_STAT_CNTRS %d\n",
+                       bp->rx_cp_nr_rings, RTE_ETHDEV_QUEUE_STAT_CNTRS);
+       }
        bp->dev_stopped = 0;
 
        rc = bnxt_init_nic(bp);
diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index f2389515d..a2fa7e40f 100644
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -68,7 +68,6 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
        struct bnxt_filter_info *filter;
        enum rte_eth_nb_pools pools = bp->rx_cp_nr_rings, max_pools = 0;
        struct bnxt_rx_queue *rxq;
-       bool rss_dflt_cr = false;
 
        bp->nr_vnics = 0;
 
@@ -119,7 +118,7 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                                pools = max_pools;
                        break;
                case ETH_MQ_RX_RSS:
-                       pools = 1;
+                       pools = bp->rx_cp_nr_rings;
                        break;
                default:
                        RTE_LOG(ERR, PMD, "Unsupported mq_mod %d\n",
@@ -128,13 +127,6 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                        goto err_out;
                }
        }
-       /*
-        * If MQ RX w/o RSS no need for per VNIC filter.
-        */
-       if ((dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) ||
-           (bp->rx_cp_nr_rings &&
-            !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS)))
-               rss_dflt_cr = true;
 
        nb_q_per_grp = bp->rx_cp_nr_rings / pools;
        start_grp_id = 0;
@@ -151,7 +143,7 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                STAILQ_INSERT_TAIL(&bp->ff_pool[i], vnic, next);
                bp->nr_vnics++;
 
-               for (j = 0, ring_idx = 0; j < nb_q_per_grp; j++, ring_idx++) {
+               for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
                        rxq = bp->eth_dev->data->rx_queues[ring_idx];
                        rxq->vnic = vnic;
                }
@@ -166,8 +158,10 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
                vnic->start_grp_id = start_grp_id;
                vnic->end_grp_id = end_grp_id;
 
-               if (rss_dflt_cr && i) {
-                       vnic->rss_dflt_cr = true;
+               if (i) {
+                       if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
+                           !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
+                               vnic->rss_dflt_cr = true;
                        goto skip_filter_allocation;
                }
                filter = bnxt_alloc_filter(bp);
-- 
2.13.5 (Apple Git-94)