hv_netvsc: Allow scatter-gather feature to be tunable

In a previous patch, the NETIF_F_SG was missing after the code changes.
That caused the SG feature to be "fixed". This patch includes it into
hw_features, so it is tunable again.

Fixes: 23312a3be999 ("netvsc: negotiate checksum and segmentation parameters")
Signed-off-by: Haiyang Zhang <haiyangz@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 ecc9af0..670ef68 100644 (file)
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -822,7 +822,7 @@ struct nvsp_message {
 
 #define NETVSC_SUPPORTED_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | \
                                      NETIF_F_TSO | NETIF_F_IPV6_CSUM | \
-                                     NETIF_F_TSO6 | NETIF_F_LRO)
+                                     NETIF_F_TSO6 | NETIF_F_LRO | NETIF_F_SG)
 
 #define VRSS_SEND_TAB_SIZE 16  /* must be power of 2 */
 #define VRSS_CHANNEL_MAX 64

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 0a6cd2f..1f1192e 100644 (file)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -2313,8 +2313,8 @@ static int netvsc_probe(struct hv_device *dev,
 
        /* hw_features computed in rndis_netdev_set_hwcaps() */
        net->features = net->hw_features |
-               NETIF_F_HIGHDMA | NETIF_F_SG |
-               NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
+               NETIF_F_HIGHDMA | NETIF_F_HW_VLAN_CTAG_TX |
+               NETIF_F_HW_VLAN_CTAG_RX;
        net->vlan_features = net->features;
 
        netdev_lockdep_set_classes(net);

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 317dbe9..abaf815 100644 (file)
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1207,6 +1207,7 @@ static int rndis_netdev_set_hwcaps(struct rndis_device *rndis_device,
 
        /* Compute tx offload settings based on hw capabilities */
        net->hw_features |= NETIF_F_RXCSUM;
+       net->hw_features |= NETIF_F_SG;
 
        if ((hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_ALL_TCP4) == NDIS_TXCSUM_ALL_TCP4) {
                /* Can checksum TCP */