ice: Correct capabilities reporting of max TCs

Firmware always returns 8 as the max number of supported TCs. However on
devices with more than 4 ports, the maximum number of TCs per port is
limited to 4. Check and, if necessary, correct the reporting of
capabilities for devices with more than 4 ports.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index e92eaec..fb1d930 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1783,6 +1783,18 @@ ice_parse_caps(struct ice_hw *hw, void *buf, u32 cap_count,
                        break;
                }
        }
+
+       /* Re-calculate capabilities that are dependent on the number of
+        * physical ports; i.e. some features are not supported or function
+        * differently on devices with more than 4 ports.
+        */
+       if (hw->dev_caps.num_funcs > 4) {
+               /* Max 4 TCs per port */
+               caps->maxtc = 4;
+               ice_debug(hw, ICE_DBG_INIT,
+                         "%s: maxtc = %d (based on #ports)\n", prefix,
+                         caps->maxtc);
+       }
 }
 
 /**