From: Dave Ertman <david.m.ertman@intel.com>
Date: Wed, 2 Sep 2020 08:53:44 -0700
Subject: ice: report correct max number of TCs
Patch-mainline: v5.12-rc1
Git-commit: 7dcf7aa01c7b9f18727cbe0f9cb4136f1c6cdcc2
References: jsc#SLE-7926

In the driver currently, we are reporting max number of TCs
to the DCBNL callback as a kernel define set to 8.  This is
preventing userspace applications performing DCBx to correctly
down map the TCs from requested to actual values.

Report the actual max TC value to userspace from the capability
struct.

Fixes: b94b013eb626 ("ice: Implement DCBNL support")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ice/ice_dcb_nl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
@@ -139,7 +139,7 @@ ice_dcbnl_getnumtcs(struct net_device *d
 	if (!test_bit(ICE_FLAG_DCB_CAPABLE, pf->flags))
 		return -EINVAL;
 
-	*num = IEEE_8021QAZ_MAX_TCS;
+	*num = pf->hw.func_caps.common_cap.maxtc;
 	return 0;
 }