hyperv: Change the receive buffer size for legacy hosts

Due to a bug in the Hyper-V host verion 2008R2, we need to use a slightly smaller
receive buffer size, otherwise the buffer will not be accepted by the legacy hosts.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 7d06b4959383..13010b4dae5b 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -513,6 +513,7 @@ struct nvsp_message {
 #define NETVSC_MTU 65536
 
 #define NETVSC_RECEIVE_BUFFER_SIZE              (1024*1024*16)  /* 16MB */
+#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY       (1024*1024*15)  /* 15MB */
 
 #define NETVSC_RECEIVE_BUFFER_ID                0xcafe