Message ID | 20171208001055.24670-3-sthemmin@microsoft.com |
---|---|
State | Changes Requested, archived |
Delegated to: | David Miller |
Headers | show |
Series | netvsc fix buffer size issues | expand |
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index e4bcd202a56a..e5d16a8cf0d6 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -268,6 +268,11 @@ static int netvsc_init_buf(struct hv_device *device, buf_size = device_info->recv_sections * device_info->recv_section_size; buf_size = roundup(buf_size, PAGE_SIZE); + /* Legacy hosts only allow smaller receive buffer */ + if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_2) + buf_size = min_t(unsigned int, buf_size, + NETVSC_RECEIVE_BUFFER_SIZE_LEGACY); + net_device->recv_buf = vzalloc(buf_size); if (!net_device->recv_buf) { netdev_err(ndev,