Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index c0cf129..683d493 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1694,6 +1694,7 @@ int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
 
        skb_scrub_packet(skb, true);
        skb->protocol = eth_type_trans(skb, dev);
+       skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
 
        return 0;
 }
@@ -2522,7 +2523,7 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 /* If MPLS offload request, verify we are testing hardware MPLS features
  * instead of standard features for the netdev.
  */
-#ifdef CONFIG_NET_MPLS_GSO
+#if IS_ENABLED(CONFIG_NET_MPLS_GSO)
 static netdev_features_t net_mpls_features(struct sk_buff *skb,
                                           netdev_features_t features,
                                           __be16 type)
@@ -2562,7 +2563,7 @@ static netdev_features_t harmonize_features(struct sk_buff *skb,
 
 netdev_features_t netif_skb_features(struct sk_buff *skb)
 {
-       const struct net_device *dev = skb->dev;
+       struct net_device *dev = skb->dev;
        netdev_features_t features = dev->features;
        u16 gso_segs = skb_shinfo(skb)->gso_segs;
        __be16 protocol = skb->protocol;
@@ -2570,11 +2571,21 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
        if (gso_segs > dev->gso_max_segs || gso_segs < dev->gso_min_segs)
                features &= ~NETIF_F_GSO_MASK;
 
-       if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) {
-               struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
-               protocol = veh->h_vlan_encapsulated_proto;
-       } else if (!vlan_tx_tag_present(skb)) {
-               return harmonize_features(skb, features);
+       /* If encapsulation offload request, verify we are testing
+        * hardware encapsulation features instead of standard
+        * features for the netdev
+        */
+       if (skb->encapsulation)
+               features &= dev->hw_enc_features;
+
+       if (!vlan_tx_tag_present(skb)) {
+               if (unlikely(protocol == htons(ETH_P_8021Q) ||
+                            protocol == htons(ETH_P_8021AD))) {
+                       struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+                       protocol = veh->h_vlan_encapsulated_proto;
+               } else {
+                       goto finalize;
+               }
        }
 
        features = netdev_intersect_features(features,
@@ -2591,6 +2602,11 @@ netdev_features_t netif_skb_features(struct sk_buff *skb)
                                                     NETIF_F_HW_VLAN_CTAG_TX |
                                                     NETIF_F_HW_VLAN_STAG_TX);
 
+finalize:
+       if (dev->netdev_ops->ndo_features_check)
+               features &= dev->netdev_ops->ndo_features_check(skb, dev,
+                                                               features);
+
        return harmonize_features(skb, features);
 }
 EXPORT_SYMBOL(netif_skb_features);
@@ -2661,13 +2677,6 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
        if (unlikely(!skb))
                goto out_null;
 
-       /* If encapsulation offload request, verify we are testing
-        * hardware encapsulation features instead of standard
-        * features for the netdev
-        */
-       if (skb->encapsulation)
-               features &= dev->hw_enc_features;
-
        if (netif_needs_gso(dev, skb, features)) {
                struct sk_buff *segs;
 
@@ -4631,26 +4640,29 @@ static void net_rx_action(struct softirq_action *h)
        list_splice_init(&sd->poll_list, &list);
        local_irq_enable();
 
-       while (!list_empty(&list)) {
+       for (;;) {
                struct napi_struct *n;
 
+               if (list_empty(&list)) {
+                       if (!sd_has_rps_ipi_waiting(sd) && list_empty(&repoll))
+                               return;
+                       break;
+               }
+
+               n = list_first_entry(&list, struct napi_struct, poll_list);
+               budget -= napi_poll(n, &repoll);
+
                /* If softirq window is exhausted then punt.
                 * Allow this to run for 2 jiffies since which will allow
                 * an average latency of 1.5/HZ.
                 */
-               if (unlikely(budget <= 0 || time_after_eq(jiffies, time_limit)))
-                       goto softnet_break;
-
-
-               n = list_first_entry(&list, struct napi_struct, poll_list);
-               budget -= napi_poll(n, &repoll);
+               if (unlikely(budget <= 0 ||
+                            time_after_eq(jiffies, time_limit))) {
+                       sd->time_squeeze++;
+                       break;
+               }
        }
 
-       if (!sd_has_rps_ipi_waiting(sd) &&
-           list_empty(&list) &&
-           list_empty(&repoll))
-               return;
-out:
        local_irq_disable();
 
        list_splice_tail_init(&sd->poll_list, &list);
@@ -4660,12 +4672,6 @@ out:
                __raise_softirq_irqoff(NET_RX_SOFTIRQ);
 
        net_rps_action_and_irq_enable(sd);
-
-       return;
-
-softnet_break:
-       sd->time_squeeze++;
-       goto out;
 }
 
 struct netdev_adjacent {