iavf: Fix limit of total number of queues to active queues of VF

stable inclusion
from stable-v5.10.91
commit 3ca132e6b06505e554ccf05282975c71a3768834
bugzilla: 186187 https://gitee.com/openeuler/kernel/issues/I4SI2C

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3ca132e6b06505e554ccf05282975c71a3768834

--------------------------------

commit b712941c upstream.

In the absence of this validation, if the user requests to
configure queues more than the enabled queues, it results in
sending the requested number of queues to the kernel stack
(due to the asynchronous nature of VF response), in which
case the stack might pick a queue to transmit that is not
enabled and result in Tx hang. Fix this bug by
limiting the total number of queues allocated for VF to
active queues of VF.

Fixes: d5b33d02 ("i40evf: add ndo_setup_tc callback to i40evf")
Signed-off-by: NAshwin Vijayavel <ashwin.vijayavel@intel.com>
Signed-off-by: NKaren Sornek <karen.sornek@intel.com>
Tested-by: NKonrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/net/ethernet/intel/iavf/iavf_main.c

@@ -2598,8 +2598,11 @@ static int iavf_validate_ch_config(struct iavf_adapter *adapter,
 		total_max_rate += tx_rate;
 		num_qps += mqprio_qopt->qopt.count[i];
 	}
-	if (num_qps > IAVF_MAX_REQ_QUEUES)
+	if (num_qps > adapter->num_active_queues) {
+		dev_err(&adapter->pdev->dev,
+			"Cannot support requested number of queues\n");
 		return -EINVAL;
+	}
 
 	ret = iavf_validate_tx_bandwidth(adapter, total_max_rate);
 	return ret;