1 files changed, 31 insertions, 9 deletions

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index afdcc5664ea6..39dddcd8b3cb 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -435,7 +435,7 @@ static u32 init_page_array(void *hdr, u32 len, struct sk_buff *skb,
 		skb_frag_t *frag = skb_shinfo(skb)->frags + i;
 
 		slots_used += fill_pg_buf(skb_frag_page(frag),
-					frag->page_offset,
+					skb_frag_off(frag),
 					skb_frag_size(frag), &pb[slots_used]);
 	}
 	return slots_used;
@@ -449,7 +449,7 @@ static int count_skb_frag_slots(struct sk_buff *skb)
 	for (i = 0; i < frags; i++) {
 		skb_frag_t *frag = skb_shinfo(skb)->frags + i;
 		unsigned long size = skb_frag_size(frag);
-		unsigned long offset = frag->page_offset;
+		unsigned long offset = skb_frag_off(frag);
 
 		/* Skip unused frames from start of page */
 		offset &= ~PAGE_MASK;
@@ -836,7 +836,6 @@ int netvsc_recv_callback(struct net_device *net,
 
 	if (unlikely(!skb)) {
 		++net_device_ctx->eth_stats.rx_no_memory;
-		rcu_read_unlock();
 		return NVSP_STAT_FAIL;
 	}
 
@@ -1240,12 +1239,15 @@ static void netvsc_get_stats64(struct net_device *net,
 			       struct rtnl_link_stats64 *t)
 {
 	struct net_device_context *ndev_ctx = netdev_priv(net);
-	struct netvsc_device *nvdev = rcu_dereference_rtnl(ndev_ctx->nvdev);
+	struct netvsc_device *nvdev;
 	struct netvsc_vf_pcpu_stats vf_tot;
 	int i;
 
+	rcu_read_lock();
+
+	nvdev = rcu_dereference(ndev_ctx->nvdev);
 	if (!nvdev)
-		return;
+		goto out;
 
 	netdev_stats_to_stats64(t, &net->stats);
 
@@ -1284,6 +1286,8 @@ static void netvsc_get_stats64(struct net_device *net,
 		t->rx_packets	+= packets;
 		t->multicast	+= multicast;
 	}
+out:
+	rcu_read_unlock();
 }
 
 static int netvsc_set_mac_addr(struct net_device *ndev, void *p)
@@ -1781,13 +1785,15 @@ static int netvsc_set_features(struct net_device *ndev,
 	netdev_features_t change = features ^ ndev->features;
 	struct net_device_context *ndevctx = netdev_priv(ndev);
 	struct netvsc_device *nvdev = rtnl_dereference(ndevctx->nvdev);
+	struct net_device *vf_netdev = rtnl_dereference(ndevctx->vf_netdev);
 	struct ndis_offload_params offloads;
+	int ret = 0;
 
 	if (!nvdev || nvdev->destroy)
 		return -ENODEV;
 
 	if (!(change & NETIF_F_LRO))
-		return 0;
+		goto syncvf;
 
 	memset(&offloads, 0, sizeof(struct ndis_offload_params));
 
@@ -1799,7 +1805,19 @@ static int netvsc_set_features(struct net_device *ndev,
 		offloads.rsc_ip_v6 = NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED;
 	}
 
-	return rndis_filter_set_offload_params(ndev, nvdev, &offloads);
+	ret = rndis_filter_set_offload_params(ndev, nvdev, &offloads);
+
+	if (ret)
+		features ^= NETIF_F_LRO;
+
+syncvf:
+	if (!vf_netdev)
+		return ret;
+
+	vf_netdev->wanted_features = features;
+	netdev_update_features(vf_netdev);
+
+	return ret;
 }
 
 static u32 netvsc_get_msglevel(struct net_device *ndev)
@@ -2177,6 +2195,10 @@ static int netvsc_register_vf(struct net_device *vf_netdev)
 
 	dev_hold(vf_netdev);
 	rcu_assign_pointer(net_device_ctx->vf_netdev, vf_netdev);
+
+	vf_netdev->wanted_features = ndev->features;
+	netdev_update_features(vf_netdev);
+
 	return NOTIFY_OK;
 }
 
@@ -2309,8 +2331,8 @@ 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);