[PATCH v2 07/27] net/ixgbe/base: increase DCB BW calculation for MTU from 4088 to 9128

[Anatoly Burakov <anatoly.burakov@intel.com>]

From: Radoslaw Tyl <radoslawx.tyl@intel.com>

Change max credit and credit refill to a maximum possible value.
Too small values cause the incorrect calculation of the bandwidth limits
to each traffic class for frames larger than 4088 bytes.

Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com>
Reviewed-by: Skajewski, PiotrX <piotrx.skajewski@intel.com>
Tested-by: Skajewski, PiotrX <piotrx.skajewski@intel.com>
Reviewed-by: Mrozowicz, SlawomirX <slawomirx.mrozowicz@intel.com>
Reviewed-by: Michael, Alice <alice.michael@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_dcb.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_dcb.h b/drivers/net/ixgbe/base/ixgbe_dcb.h
index c2a1013ac0..110ad8e550 100644
--- a/drivers/net/ixgbe/base/ixgbe_dcb.h
+++ b/drivers/net/ixgbe/base/ixgbe_dcb.h
@@ -10,9 +10,9 @@
 /* DCB defines */
 /* DCB credit calculation defines */
 #define IXGBE_DCB_CREDIT_QUANTUM	64
-#define IXGBE_DCB_MAX_CREDIT_REFILL	200   /* 200 * 64B = 12800B */
+#define IXGBE_DCB_MAX_CREDIT_REFILL	511   /* 0x1FF * 64B = 32704B */
 #define IXGBE_DCB_MAX_TSO_SIZE		(32 * 1024) /* Max TSO pkt size in DCB*/
-#define IXGBE_DCB_MAX_CREDIT		(2 * IXGBE_DCB_MAX_CREDIT_REFILL)
+#define IXGBE_DCB_MAX_CREDIT		4095 /* Maximum credit supported: 256KB * 1024 / 64B */
 
 /* 513 for 32KB TSO packet */
 #define IXGBE_DCB_MIN_TSO_CREDIT	\
-- 
2.43.0