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ixgbe: increase DCB BW calculation for MTU

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Change max credit and credit refill to a maximum possible value, 9128.
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: Piotr Skajewski <piotrx.skajewski@intel.com>
Reviewed-by: Slawomir Mrozowicz <slawomirx.mrozowicz@intel.com>
Reviewed-by: Alice Michael <alice.michael@intel.com>
Tested-by: Piotr Skajewski <piotrx.skajewski@intel.com>

Obtained from:	DPDK (440823f)

(cherry picked from commit 1b80ac6fa6)
This commit is contained in:
Radoslaw Tyl 2024-09-19 19:42:39 -07:00 committed by Kevin Bowling
parent 8abae0be0f
commit 004a73f51d
1 changed files with 2 additions and 2 deletions
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4
sys/dev/ixgbe/ixgbe_dcb.h
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@ -40,9 +40,9 @@
/* 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 \