Linux Virtualization - Oct 2010 - [PATCH 1/1] staging: hv: Doubled ringbuffer size for Hyper-v network driver

From: Hank Janssen <hjanssen at microsoft.com>

Double the default network ringsize buffer for Hyper-V network driver.
In very heavily loaded systems the there is a chance you run out of
ringbuffer space and error out.

Signed-off-by: Haiyang Zhang <haiyangz at microsoft.com>
Signed-off-by: Hank Janssen <hjanssen at microsoft.com>

---
 drivers/staging/hv/netvsc_drv.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/netvsc_drv.c b/drivers/staging/hv/netvsc_drv.c
index 56e1157..45e082a 100644
--- a/drivers/staging/hv/netvsc_drv.c
+++ b/drivers/staging/hv/netvsc_drv.c
@@ -59,7 +59,7 @@ struct netvsc_driver_context {
 /* Need this many pages to handle worst case fragmented packet */
 #define PACKET_PAGES_HIWATER  (MAX_SKB_FRAGS + 2)
 
-static int ring_size = roundup_pow_of_two(2*MAX_SKB_FRAGS+1);
+static int ring_size = 128;
 module_param(ring_size, int, S_IRUGO);
 MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)");
 
-- 
1.6.0.2