net offloading: Pass features into netif_needs_gso().

Now that there is a single function that can compute the device
features relevant to a packet, we don't want to run it for each
offload.  This converts netif_needs_gso() to take the features
of the device, rather than computing them itself.

Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 10 insertions, 12 deletions

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index cdbeec9f83ea..546de5749824 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -488,7 +488,7 @@ static int xennet_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
         if (unlikely(!netif_carrier_ok(dev) ||
                      (frags > 1 && !xennet_can_sg(dev)) ||
-                     netif_needs_gso(dev, skb))) {
+                     netif_needs_gso(skb, netif_skb_features(skb)))) {
                 spin_unlock_irq(&np->tx_lock);
                 goto drop;
         }
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d4dac09a5ad2..de2bfe6da359 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2317,16 +2317,10 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features)
                (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST));
 }
 
-static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
+static inline int netif_needs_gso(struct sk_buff *skb, int features)
 {
-        if (skb_is_gso(skb)) {
-                int features = netif_skb_features(skb);
-
-                return (!skb_gso_ok(skb, features) ||
-                        unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
-        }
-
-        return 0;
+        return skb_is_gso(skb) && (!skb_gso_ok(skb, features) ||
+                unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
 }
 
 static inline void netif_set_gso_max_size(struct net_device *dev,
diff --git a/net/core/dev.c b/net/core/dev.c
index a51dfd7b56fb..1444ed3861a0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2086,6 +2086,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
         int rc = NETDEV_TX_OK;
 
         if (likely(!skb->next)) {
+                int features;
+
                 /*
                  * If device doesnt need skb->dst, release it right now while
                  * its hot in this cpu cache
@@ -2098,8 +2100,10 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 
                 skb_orphan_try(skb);
 
+                features = netif_skb_features(skb);
+
                 if (vlan_tx_tag_present(skb) &&
-                    !(dev->features & NETIF_F_HW_VLAN_TX)) {
+                    !(features & NETIF_F_HW_VLAN_TX)) {
                         skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb));
                         if (unlikely(!skb))
                                 goto out;
@@ -2107,7 +2111,7 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
                         skb->vlan_tci = 0;
                 }
 
-                if (netif_needs_gso(dev, skb)) {
+                if (netif_needs_gso(skb, features)) {
                         if (unlikely(dev_gso_segment(skb)))
                                 goto out_kfree_skb;
                         if (skb->next)