ixgbe: Update link flow control to correctly handle multiple packet buffer DCB

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This change updates the link flow control configuration so that we
correctly set the link flow control settings for DCB.  Previously we would
have to call the fc_enable call 8 times, once for each packet buffer.  If
we move that logic into the fc_enable call itself we can avoid multiple
unnecessary register writes.

This change also corrects an issue in which we were only shifting the water
marks for 82599 parts by 6 instead of 10.  This was resulting in us only
using 1/16 of the packet buffer when flow control was enabled.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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This commit is contained in:

Alexander Duyck 2012-04-19 17:48:48 +00:00 • committed by Jeff Kirsher

parent 67a79df271

commit 041441d0f0

6 changed files with 102 additions and 158 deletions

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61

drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c

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166

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

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2

drivers/net/ethernet/intel/ixgbe/ixgbe_common.h

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13

drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_82599.c

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16

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

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drivers/net/ethernet/intel/ixgbe/ixgbe_type.h

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