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List:       intel-wired-lan
Subject:    [Intel-wired-lan] [PATCH] iavf: Limiting RSS queues to CPUs
From:       Alice Michael <alice.michael () intel ! com>
Date:       2019-03-29 19:48:50
Message-ID: 20190329194850.79377-1-alice.michael () intel ! com
[Download RAW message or body]

From: Aleksandr Loktionov <aleksandr.loktionov@intel.com>

Limiting RSS queues number to online CPUs number in order to
avoid issues with creating misconfigured RSS queues.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
---
 drivers/net/ethernet/intel/iavf/iavf_virtchnl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c \
b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c index e64751da0921..357c74bc3265 \
                100644
--- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
@@ -416,7 +416,7 @@ int iavf_request_queues(struct iavf_adapter *adapter, int num)
 		return -EBUSY;
 	}
 
-	vfres.num_queue_pairs = num;
+	vfres.num_queue_pairs = min_t(int, num, num_online_cpus());
 
 	adapter->current_op = VIRTCHNL_OP_REQUEST_QUEUES;
 	adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
-- 
2.19.2

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