[PATCH] net/netvsc: increase VSP response timeout to 60 seconds

[longli at linuxonhyperv.com]

From: Long Li <longli at microsoft.com>

The current timeout is set to 5 seconds. In Azure, tests show that it may
take up to 15 seconds for VSP to respond on busy nodes. The VSP schedules
unbounded work to process VSC resquest, there is no upper limit on how long
it takes to send response back to VSC.

In the NETVSC kernel mode driver, it waits forever for VSP response. While in
DPDK we can't wait forever, setting the timeout to 60 seconds.

Cc: stable at dpdk.org
Signed-off-by: Long Li <longli at microsoft.com>
---
 drivers/net/netvsc/hn_rndis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/netvsc/hn_rndis.c b/drivers/net/netvsc/hn_rndis.c
index e6f1f28768..7e9abce8d0 100644
--- a/drivers/net/netvsc/hn_rndis.c
+++ b/drivers/net/netvsc/hn_rndis.c
@@ -35,7 +35,7 @@
 #include "hn_rndis.h"
 #include "ndis.h"
 
-#define RNDIS_TIMEOUT_SEC 5
+#define RNDIS_TIMEOUT_SEC 60
 #define RNDIS_DELAY_MS    10
 
 #define HN_RNDIS_XFER_SIZE		0x4000
-- 
2.17.1