vlan: Add GRO interfaces

[linux-2.6-omap-h63xx.git] / net / 8021q / vlan_core.c

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index dd86a1dc4cd00f597ceb58cccefe2625bb1541fa..6c1323940263121549594f30865c6e84a210eb3d 100644 (file)
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -3,46 +3,35 @@
 #include <linux/if_vlan.h>
 #include "vlan.h"
 
-struct vlan_hwaccel_cb {
-       struct net_device       *dev;
-};
-
-static inline struct vlan_hwaccel_cb *vlan_hwaccel_cb(struct sk_buff *skb)
-{
-       return (struct vlan_hwaccel_cb *)skb->cb;
-}
-
 /* VLAN rx hw acceleration helper.  This acts like netif_{rx,receive_skb}(). */
 int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
                      u16 vlan_tci, int polling)
 {
-       struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
-
-       if (skb_bond_should_drop(skb)) {
-               dev_kfree_skb_any(skb);
-               return NET_RX_DROP;
-       }
+       if (skb_bond_should_drop(skb))
+               goto drop;
 
        skb->vlan_tci = vlan_tci;
-       cb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+       skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+
+       if (!skb->dev)
+               goto drop;
 
        return (polling ? netif_receive_skb(skb) : netif_rx(skb));
+
+drop:
+       dev_kfree_skb_any(skb);
+       return NET_RX_DROP;
 }
 EXPORT_SYMBOL(__vlan_hwaccel_rx);
 
 int vlan_hwaccel_do_receive(struct sk_buff *skb)
 {
-       struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
-       struct net_device *dev = cb->dev;
+       struct net_device *dev = skb->dev;
        struct net_device_stats *stats;
 
+       skb->dev = vlan_dev_info(dev)->real_dev;
        netif_nit_deliver(skb);
 
-       if (dev == NULL) {
-               kfree_skb(skb);
-               return -1;
-       }
-
        skb->dev = dev;
        skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
        skb->vlan_tci = 0;
@@ -80,3 +69,79 @@ u16 vlan_dev_vlan_id(const struct net_device *dev)
        return vlan_dev_info(dev)->vlan_id;
 }
 EXPORT_SYMBOL_GPL(vlan_dev_vlan_id);
+
+static int vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
+                          unsigned int vlan_tci, struct sk_buff *skb)
+{
+       struct sk_buff *p;
+
+       if (skb_bond_should_drop(skb))
+               goto drop;
+
+       skb->vlan_tci = vlan_tci;
+       skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+
+       if (!skb->dev)
+               goto drop;
+
+       for (p = napi->gro_list; p; p = p->next) {
+               NAPI_GRO_CB(p)->same_flow = p->dev == skb->dev;
+               NAPI_GRO_CB(p)->flush = 0;
+       }
+
+       return dev_gro_receive(napi, skb);
+
+drop:
+       return 2;
+}
+
+int vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
+                    unsigned int vlan_tci, struct sk_buff *skb)
+{
+       int err = NET_RX_SUCCESS;
+
+       switch (vlan_gro_common(napi, grp, vlan_tci, skb)) {
+       case -1:
+               return netif_receive_skb(skb);
+
+       case 2:
+               err = NET_RX_DROP;
+               /* fall through */
+
+       case 1:
+               kfree_skb(skb);
+               break;
+       }
+
+       return err;
+}
+EXPORT_SYMBOL(vlan_gro_receive);
+
+int vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
+                  unsigned int vlan_tci, struct napi_gro_fraginfo *info)
+{
+       struct sk_buff *skb = napi_fraginfo_skb(napi, info);
+       int err = NET_RX_DROP;
+
+       if (!skb)
+               goto out;
+
+       err = NET_RX_SUCCESS;
+
+       switch (vlan_gro_common(napi, grp, vlan_tci, skb)) {
+       case -1:
+               return netif_receive_skb(skb);
+
+       case 2:
+               err = NET_RX_DROP;
+               /* fall through */
+
+       case 1:
+               napi_reuse_skb(napi, skb);
+               break;
+       }
+
+out:
+       return err;
+}
+EXPORT_SYMBOL(vlan_gro_frags);