[dpdk-dev] [PATCH 30/69] net/i40e/base: change of the incorrect Tx descriptors number

[Xiaolong Ye]

The existing driver allows setting the number of TX descriptors
to the value that is indivisible by 32. This is not properly
supported by x710 hardware. The patch limits the number of TX
descriptors to the whole value of 32.

Signed-off-by: Doug Dziggel <douglas.a.dziggel at intel.com>
Signed-off-by: Dariusz Chaberski <dariuszx.chaberski at intel.com>
Reviewed-by: Jacek Lisinski <jacekx.lisinski at intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov at intel.com>
Reviewed-by: Formela Marcin <marcin.formela at intel.com>
Reviewed-by: Kirsher Jeffrey T <jeffrey.t.kirsher at intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye at intel.com>
---
 drivers/net/i40e/base/i40e_type.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/base/i40e_type.h b/drivers/net/i40e/base/i40e_type.h
index 23adbbccd..6a3cf52a2 100644
--- a/drivers/net/i40e/base/i40e_type.h
+++ b/drivers/net/i40e/base/i40e_type.h
@@ -79,8 +79,8 @@ typedef void (*I40E_ADMINQ_CALLBACK)(struct i40e_hw *, struct i40e_aq_desc *);
 #define I40E_HI_BYTE(x)		((u8)(((x) >> 8) & 0xFF))
 #define I40E_LO_BYTE(x)		((u8)((x) & 0xFF))
 
-/* Number of Transmit Descriptors must be a multiple of 8. */
-#define I40E_REQ_TX_DESCRIPTOR_MULTIPLE	8
+/* Number of Transmit Descriptors must be a multiple of 32. */
+#define I40E_REQ_TX_DESCRIPTOR_MULTIPLE	32
 /* Number of Receive Descriptors must be a multiple of 32 if
  * the number of descriptors is greater than 32.
  */
-- 
2.17.1