bnxt_en: only set dev->queue_mgmt_ops if supported by FW

The queue API calls bnxt_hwrm_vnic_update() to stop/start the flow of
packets, which can only properly flush the pipeline if FW indicates
support.

Add a macro BNXT_SUPPORTS_QUEUE_API that checks for the required flags
and only set queue_mgmt_ops if true.

Signed-off-by: David Wei <dw@davidwei.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -15718,7 +15718,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	dev->stat_ops = &bnxt_stat_ops;
 	dev->watchdog_timeo = BNXT_TX_TIMEOUT;
 	dev->ethtool_ops = &bnxt_ethtool_ops;
-	dev->queue_mgmt_ops = &bnxt_queue_mgmt_ops;
 	pci_set_drvdata(pdev, dev);
 
 	rc = bnxt_alloc_hwrm_resources(bp);
@@ -15899,6 +15898,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	if (BNXT_SUPPORTS_NTUPLE_VNIC(bp))
 		bp->rss_cap |= BNXT_RSS_CAP_MULTI_RSS_CTX;
+	if (BNXT_SUPPORTS_QUEUE_API(bp))
+		dev->queue_mgmt_ops = &bnxt_queue_mgmt_ops;
 
 	rc = register_netdev(dev);
 	if (rc)

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -2451,6 +2451,9 @@ struct bnxt {
 #define BNXT_SUPPORTS_MULTI_RSS_CTX(bp)				\
 	(BNXT_PF(bp) && BNXT_SUPPORTS_NTUPLE_VNIC(bp) &&	\
 	 ((bp)->rss_cap & BNXT_RSS_CAP_MULTI_RSS_CTX))
+#define BNXT_SUPPORTS_QUEUE_API(bp)				\
+	(BNXT_PF(bp) && BNXT_SUPPORTS_NTUPLE_VNIC(bp) &&	\
+	 ((bp)->fw_cap & BNXT_FW_CAP_VNIC_RE_FLUSH))
 
 	u32			hwrm_spec_code;
 	u16			hwrm_cmd_seq;