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ixgbe: Don't assume dev->num_tc is equal to hardware TC config

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The code throughout ixgbe was assuming that dev->num_tc was populated and
configured with the driver, when in fact this can be configured via mqprio
without any hardware coordination other than restricting us to the real
number of Tx queues we advertise.

Instead of handling things this way we need to keep a local copy of the
number of TCs in use so that we don't accidentally pull in the TC
configuration from mqprio when it is configured in software mode.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2017-11-22 10:57:11 -08:00
committed by Jeff Kirsher
parent a8e87d9f73
commit 0efbf12b95
6 changed files with 29 additions and 27 deletions
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drivers/net/ethernet/intel/ixgbe/ixgbe.h
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@@ -674,6 +674,7 @@ struct ixgbe_adapter {
struct ieee_ets *ixgbe_ieee_ets;
struct ixgbe_dcb_config dcb_cfg;
struct ixgbe_dcb_config temp_dcb_cfg;
u8 hw_tcs;
u8 dcb_set_bitmap;
u8 dcbx_cap;
enum ixgbe_fc_mode last_lfc_mode;