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igb: Enable RSS for Intel I211 Ethernet Controller

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commit 6e6026f2dd upstream.

The Intel I211 Ethernet Controller supports 2 Receive Side Scaling (RSS)
queues. It should not be excluded from having this feature enabled.

Via commit c883de9fd7 ("igb: rename igb define to be more generic")
E1000_MRQC_ENABLE_RSS_4Q was renamed to E1000_MRQC_ENABLE_RSS_MQ to
indicate that this is a generic bit flag to enable queues and not
a flag that is specific to devices that support 4 queues

The bit flag enables 2, 4 or 8 queues appropriately depending on the part.

Tested with a multicore CPU and frames were then distributed as expected.

This issue appears to have been introduced because of confusion caused
by the prior name.

Signed-off-by: Nick Lowe <nick.lowe@gmail.com>
Tested-by: David Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nick Lowe 2020-12-21 22:25:02 +00:00 • committed by Greg Kroah-Hartman
commit a41c193d00
1 changed files with 1 additions and 2 deletions
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3
drivers/net/ethernet/intel/igb/igb_main.c
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@ -4482,8 +4482,7 @@ static void igb_setup_mrqc(struct igb_adapter *adapter)
else
mrqc |= E1000_MRQC_ENABLE_VMDQ;
} else {
if (hw->mac.type != e1000_i211)
mrqc |= E1000_MRQC_ENABLE_RSS_MQ;
mrqc |= E1000_MRQC_ENABLE_RSS_MQ;
}
igb_vmm_control(adapter);