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netvsc: increase default receive buffer size 

The default receive buffer size was reduced by recent change
to a value which was appropriate for 10G and Windows Server 2016.
But the value is too small for full performance with 40G on Azure.
Increase the default back to maximum supported by host.

Fixes: 8b5327975a ("netvsc: allow controlling send/recv buffer size")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2017-09-14 09:31:07 -07:00 committed by David S. Miller
parent 8c72c65b42
commit 5023a6db73
1 changed files with 1 additions and 1 deletions
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2
drivers/net/hyperv/netvsc_drv.c
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@ -49,7 +49,7 @@
#define NETVSC_MIN_TX_SECTIONS 10 #define NETVSC_MIN_TX_SECTIONS 10
#define NETVSC_DEFAULT_TX 192 /* ~1M */ #define NETVSC_DEFAULT_TX 192 /* ~1M */
#define NETVSC_MIN_RX_SECTIONS 10 /* ~64K */ #define NETVSC_MIN_RX_SECTIONS 10 /* ~64K */
#define NETVSC_DEFAULT_RX 2048 /* ~4M */ #define NETVSC_DEFAULT_RX 10485 /* Max ~16M */
#define LINKCHANGE_INT (2 * HZ) #define LINKCHANGE_INT (2 * HZ)
#define VF_TAKEOVER_INT (HZ / 10) #define VF_TAKEOVER_INT (HZ / 10)