uio_hv_generic: increase size of receive and send buffers

When using DPDK there is significant performance boost by using
the largest possible send and receive buffer area.

Unfortunately, with UIO model there is not a good way to configure
this at run time. But it is okay to have a bigger buffer available
even if application only decides to use a smaller piece of it.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c
index e401be8321ab573b0d4c973fb7ac3f673de0f49b..9e7d622b432600730f42cadb19574a13296836e0 100644 (file)
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -33,13 +33,13 @@
 
 #include "../hv/hyperv_vmbus.h"
 
-#define DRIVER_VERSION "0.02.0"
+#define DRIVER_VERSION "0.02.1"
 #define DRIVER_AUTHOR  "Stephen Hemminger <sthemmin at microsoft.com>"
 #define DRIVER_DESC    "Generic UIO driver for VMBus devices"
 
 #define HV_RING_SIZE    512    /* pages */
-#define SEND_BUFFER_SIZE (15 * 1024 * 1024)
-#define RECV_BUFFER_SIZE (15 * 1024 * 1024)
+#define SEND_BUFFER_SIZE (16 * 1024 * 1024)
+#define RECV_BUFFER_SIZE (31 * 1024 * 1024)
 
 /*
  * List of resources to be mapped to user space