net/bnxt: fix queues per VNIC

Update queues per VNIC in single queue mode.
bp->rx_num_qs_per_vnic is not initialized in the single queue mode.
As a result of this when an interface is reconfigured to single
queue mode from an existing multiqueue mode, bp->rx_num_qs_per_vnic
is not updated to the value of 1. Hence, the driver will try to
access more than one queue resulting in a crash.

This patch fixes it by initializing bp->rx_num_qs_per_vnic in the
single queue mode as well.

Fixes: 36024b2e7fe5 ("net/bnxt: allow dynamic creation of VNIC")
Cc: stable@dpdk.org
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_rxq.c b/drivers/net/bnxt/bnxt_rxq.c
index f46b10c..53a9b52 100644 (file)
--- a/drivers/net/bnxt/bnxt_rxq.c
+++ b/drivers/net/bnxt/bnxt_rxq.c
@@ -106,7 +106,6 @@ int bnxt_mq_rx_configure(struct bnxt *bp)
 
        pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
        nb_q_per_grp = bp->rx_cp_nr_rings / pools;
-       bp->rx_num_qs_per_vnic = nb_q_per_grp;
        PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
                    pools, nb_q_per_grp);
        start_grp_id = 0;
@@ -165,6 +164,8 @@ skip_filter_allocation:
        }
 
 out:
+       bp->rx_num_qs_per_vnic = nb_q_per_grp;
+
        if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
                struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;