igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80

[ Upstream commit 8360717524a24a421c36ef8eb512406dbd42160a ]

Change the minimum value of RX/TX descriptors to 64 to enable setting the rx/tx
value between 64 and 80. All igbvf devices can use as low as 64 descriptors.
This change will unify igbvf with other drivers.
Based on commit 7b1be1987c1e ("e1000e: lower ring minimum size to 64")

Fixes: d4e0fe01a38a ("igbvf: add new driver to support 82576 virtual functions")
Signed-off-by: Olga Zaborska <olga.zaborska@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/intel/igbvf/igbvf.h b/drivers/net/ethernet/intel/igbvf/igbvf.h
index 57d39ee00b58540aaf7ea919951a51f8fd30a934..7b83678ba83a695cfea6eaafbcac8efdda148415 100644 (file)
--- a/drivers/net/ethernet/intel/igbvf/igbvf.h
+++ b/drivers/net/ethernet/intel/igbvf/igbvf.h
@@ -39,11 +39,11 @@ enum latency_range {
 /* Tx/Rx descriptor defines */
 #define IGBVF_DEFAULT_TXD      256
 #define IGBVF_MAX_TXD          4096
-#define IGBVF_MIN_TXD          80
+#define IGBVF_MIN_TXD          64
 
 #define IGBVF_DEFAULT_RXD      256
 #define IGBVF_MAX_RXD          4096
-#define IGBVF_MIN_RXD          80
+#define IGBVF_MIN_RXD          64
 
 #define IGBVF_MIN_ITR_USECS    10 /* 100000 irq/sec */
 #define IGBVF_MAX_ITR_USECS    10000 /* 100    irq/sec */