hyperv: Add support for physically discontinuous receive buffer
This will allow us to use bigger receive buffer, and prevent allocation failure
due to fragmented memory.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index a26eecb..7b594ce 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -462,7 +462,7 @@
#define NETVSC_MTU 65536
-#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*2) /* 2MB */
+#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 93b485b..03a2c6e 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -136,8 +136,7 @@
if (net_device->recv_buf) {
/* Free up the receive buffer */
- free_pages((unsigned long)net_device->recv_buf,
- get_order(net_device->recv_buf_size));
+ vfree(net_device->recv_buf);
net_device->recv_buf = NULL;
}
@@ -163,9 +162,7 @@
return -ENODEV;
ndev = net_device->ndev;
- net_device->recv_buf =
- (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
- get_order(net_device->recv_buf_size));
+ net_device->recv_buf = vzalloc(net_device->recv_buf_size);
if (!net_device->recv_buf) {
netdev_err(ndev, "unable to allocate receive "
"buffer of size %d\n", net_device->recv_buf_size);