netdev - [net-next 05/11] iavf: Fix the math for valid length for ADq enable

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Date:   Mon, 17 Jun 2019 16:33:30 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Avinash Dayanand <avinash.dayanand@...el.com>,
        netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 05/11] iavf: Fix the math for valid length for ADq enable

From: Avinash Dayanand <avinash.dayanand@...el.com>

There was a calculation error in virtchnl regarding the valid
length which was fixed recently and a corresponding change needs
to go into the code while we enable ADq.

Signed-off-by: Avinash Dayanand <avinash.dayanand@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.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 3eea35cee25a..dd97509e2da1 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
@@ -983,7 +983,7 @@ void iavf_enable_channels(struct iavf_adapter *adapter)
 		return;
 	}
 
-	len = (adapter->num_tc * sizeof(struct virtchnl_channel_info)) +
+	len = ((adapter->num_tc - 1) * sizeof(struct virtchnl_channel_info)) +
 	       sizeof(struct virtchnl_tc_info);
 
 	vti = kzalloc(len, GFP_KERNEL);
-- 
2.21.0