hv_netvsc: Set vRSS with num_chn in RNDIS filter
Uses device_info->num_chn to pass user provided number of vRSS
queues (from ethtool --set-channels) to rndis_filter_device_add. If
nonzero and less than the maximum, set net_device->num_chn to the given
value; else default to prior algorithm.
Always initialize struct device_info to 0, otherwise not all its fields
are guaranteed to be 0, which is necessary when checking if num_chn has
been purposefully set.
Signed-off-by: Andrew Schwartzmeyer <andschwa@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 7b36d5f..2184520 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -799,6 +799,8 @@
ndevctx->device_ctx = hdev;
hv_set_drvdata(hdev, ndev);
+
+ memset(&device_info, 0, sizeof(device_info));
device_info.ring_size = ring_size;
device_info.max_num_vrss_chns = max_num_vrss_chns;
rndis_filter_device_add(hdev, &device_info);
@@ -1022,6 +1024,7 @@
net->needed_headroom = max_needed_headroom;
/* Notify the netvsc driver of the new device */
+ memset(&device_info, 0, sizeof(device_info));
device_info.ring_size = ring_size;
device_info.max_num_vrss_chns = max_num_vrss_chns;
ret = rndis_filter_device_add(dev, &device_info);
