When the buffer is too small for a packet from VMBus, a bigger buffer will be
allocated in netvsc_channel_cb() and retry reading the packet from VMBus.
Increasing this buffer size will reduce the retry overhead.

Signed-off-by: Haiyang Zhang <haiya...@microsoft.com>
Reviewed-by: Dexuan Cui <de...@microsoft.com>
---
 drivers/net/hyperv/hyperv_net.h |    2 +-
 drivers/net/hyperv/netvsc.c     |    6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index d5e07de..b14a0ef 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -591,7 +591,7 @@ struct nvsp_message {
 
 #define NETVSC_RECEIVE_BUFFER_ID               0xcafe
 
-#define NETVSC_PACKET_SIZE                      2048
+#define NETVSC_PACKET_SIZE                      4096
 
 #define VRSS_SEND_TAB_SIZE 16
 
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 66979cf..45899f2 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -38,7 +38,7 @@ static struct netvsc_device *alloc_net_device(struct 
hv_device *device)
        struct netvsc_device *net_device;
        struct net_device *ndev = hv_get_drvdata(device);
 
-       net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL);
+       net_device = vzalloc(sizeof(*net_device));
        if (!net_device)
                return NULL;
 
@@ -551,7 +551,7 @@ int netvsc_device_remove(struct hv_device *device)
        if (net_device->sub_cb_buf)
                vfree(net_device->sub_cb_buf);
 
-       kfree(net_device);
+       vfree(net_device);
        return 0;
 }
 
@@ -1093,7 +1093,7 @@ close:
        vmbus_close(device->channel);
 
 cleanup:
-       kfree(net_device);
+       vfree(net_device);
 
        return ret;
 }
-- 
1.7.1

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