Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6

[~andy/linux] / net / 8021q / vlan_core.c

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 01ddb0472f86c511f49ff8a602a726dd60550ff0..ce8e3ab3e7a5ab6d0f0000e699fbca27f4629d9b 100644 (file)
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -4,50 +4,29 @@
 #include <linux/netpoll.h>
 #include "vlan.h"
 
-/* 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)
+bool vlan_hwaccel_do_receive(struct sk_buff **skbp)
 {
+       struct sk_buff *skb = *skbp;
+       u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
        struct net_device *vlan_dev;
-       u16 vlan_id;
-
-       if (netpoll_rx(skb))
-               return NET_RX_DROP;
-
-       if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master)))
-               skb->deliver_no_wcard = 1;
-
-       skb->skb_iif = skb->dev->ifindex;
-       __vlan_hwaccel_put_tag(skb, vlan_tci);
-       vlan_id = vlan_tci & VLAN_VID_MASK;
-       vlan_dev = vlan_group_get_device(grp, vlan_id);
-
-       if (vlan_dev)
-               skb->dev = vlan_dev;
-       else if (vlan_id)
-               goto drop;
-
-       return (polling ? netif_receive_skb(skb) : netif_rx(skb));
+       struct vlan_pcpu_stats *rx_stats;
 
-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 net_device *dev = skb->dev;
-       struct vlan_rx_stats     *rx_stats;
+       vlan_dev = vlan_find_dev(skb->dev, vlan_id);
+       if (!vlan_dev) {
+               if (vlan_id)
+                       skb->pkt_type = PACKET_OTHERHOST;
+               return false;
+       }
 
-       skb->dev = vlan_dev_info(dev)->real_dev;
-       netif_nit_deliver(skb);
+       skb = *skbp = skb_share_check(skb, GFP_ATOMIC);
+       if (unlikely(!skb))
+               return false;
 
-       skb->dev = dev;
-       skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
+       skb->dev = vlan_dev;
+       skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci);
        skb->vlan_tci = 0;
 
-       rx_stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats);
+       rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_pcpu_stats);
 
        u64_stats_update_begin(&rx_stats->syncp);
        rx_stats->rx_packets++;
@@ -64,12 +43,13 @@ int vlan_hwaccel_do_receive(struct sk_buff *skb)
                 * This allows the VLAN to have a different MAC than the
                 * underlying device, and still route correctly. */
                if (!compare_ether_addr(eth_hdr(skb)->h_dest,
-                                       dev->dev_addr))
+                                       vlan_dev->dev_addr))
                        skb->pkt_type = PACKET_HOST;
                break;
        }
        u64_stats_update_end(&rx_stats->syncp);
-       return 0;
+
+       return true;
 }
 
 struct net_device *vlan_dev_real_dev(const struct net_device *dev)
@@ -84,68 +64,27 @@ u16 vlan_dev_vlan_id(const struct net_device *dev)
 }
 EXPORT_SYMBOL(vlan_dev_vlan_id);
 
-static gro_result_t
-vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
-               unsigned int vlan_tci, struct sk_buff *skb)
+/* 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 sk_buff *p;
-       struct net_device *vlan_dev;
-       u16 vlan_id;
-
-       if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master)))
-               skb->deliver_no_wcard = 1;
-
-       skb->skb_iif = skb->dev->ifindex;
        __vlan_hwaccel_put_tag(skb, vlan_tci);
-       vlan_id = vlan_tci & VLAN_VID_MASK;
-       vlan_dev = vlan_group_get_device(grp, vlan_id);
-
-       if (vlan_dev)
-               skb->dev = vlan_dev;
-       else if (vlan_id)
-               goto drop;
-
-       for (p = napi->gro_list; p; p = p->next) {
-               NAPI_GRO_CB(p)->same_flow =
-                       p->dev == skb->dev && !compare_ether_header(
-                               skb_mac_header(p), skb_gro_mac_header(skb));
-               NAPI_GRO_CB(p)->flush = 0;
-       }
-
-       return dev_gro_receive(napi, skb);
-
-drop:
-       return GRO_DROP;
+       return polling ? netif_receive_skb(skb) : netif_rx(skb);
 }
+EXPORT_SYMBOL(__vlan_hwaccel_rx);
 
 gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
                              unsigned int vlan_tci, struct sk_buff *skb)
 {
-       if (netpoll_rx_on(skb))
-               return vlan_hwaccel_receive_skb(skb, grp, vlan_tci)
-                       ? GRO_DROP : GRO_NORMAL;
-
-       skb_gro_reset_offset(skb);
-
-       return napi_skb_finish(vlan_gro_common(napi, grp, vlan_tci, skb), skb);
+       __vlan_hwaccel_put_tag(skb, vlan_tci);
+       return napi_gro_receive(napi, skb);
 }
 EXPORT_SYMBOL(vlan_gro_receive);
 
 gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp,
                            unsigned int vlan_tci)
 {
-       struct sk_buff *skb = napi_frags_skb(napi);
-
-       if (!skb)
-               return GRO_DROP;
-
-       if (netpoll_rx_on(skb)) {
-               skb->protocol = eth_type_trans(skb, skb->dev);
-               return vlan_hwaccel_receive_skb(skb, grp, vlan_tci)
-                       ? GRO_DROP : GRO_NORMAL;
-       }
-
-       return napi_frags_finish(napi, skb,
-                                vlan_gro_common(napi, grp, vlan_tci, skb));
+       __vlan_hwaccel_put_tag(napi->skb, vlan_tci);
+       return napi_gro_frags(napi);
 }
 EXPORT_SYMBOL(vlan_gro_frags);