5 files changed, 71 insertions, 42 deletions

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 917ecb93ea2..8970ba139d7 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -18,6 +18,8 @@
  *              2 of the License, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/capability.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
@@ -132,8 +134,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
                 vlan_gvrp_uninit_applicant(real_dev);
 
                 rcu_assign_pointer(real_dev->vlgrp, NULL);
-                if (ops->ndo_vlan_rx_register)
-                        ops->ndo_vlan_rx_register(real_dev, NULL);
 
                 /* Free the group, after all cpu's are done. */
                 call_rcu(&grp->rcu, vlan_rcu_free);
@@ -149,13 +149,13 @@ int vlan_check_real_dev(struct net_device *real_dev, u16 vlan_id)
         const struct net_device_ops *ops = real_dev->netdev_ops;
 
         if (real_dev->features & NETIF_F_VLAN_CHALLENGED) {
-                pr_info("8021q: VLANs not supported on %s\n", name);
+                pr_info("VLANs not supported on %s\n", name);
                 return -EOPNOTSUPP;
         }
 
         if ((real_dev->features & NETIF_F_HW_VLAN_FILTER) &&
             (!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) {
-                pr_info("8021q: Device %s has buggy VLAN hw accel\n", name);
+                pr_info("Device %s has buggy VLAN hw accel\n", name);
                 return -EOPNOTSUPP;
         }
 
@@ -205,8 +205,6 @@ int register_vlan_dev(struct net_device *dev)
         grp->nr_vlans++;
 
         if (ngrp) {
-                if (ops->ndo_vlan_rx_register && (real_dev->features & NETIF_F_HW_VLAN_RX))
-                        ops->ndo_vlan_rx_register(real_dev, ngrp);
                 rcu_assign_pointer(real_dev->vlgrp, ngrp);
         }
         if (real_dev->features & NETIF_F_HW_VLAN_FILTER)
@@ -344,13 +342,12 @@ static void __vlan_device_event(struct net_device *dev, unsigned long event)
         case NETDEV_CHANGENAME:
                 vlan_proc_rem_dev(dev);
                 if (vlan_proc_add_dev(dev) < 0)
-                        pr_warning("8021q: failed to change proc name for %s\n",
-                                        dev->name);
+                        pr_warn("failed to change proc name for %s\n",
+                                dev->name);
                 break;
         case NETDEV_REGISTER:
                 if (vlan_proc_add_dev(dev) < 0)
-                        pr_warning("8021q: failed to add proc entry for %s\n",
-                                        dev->name);
+                        pr_warn("failed to add proc entry for %s\n", dev->name);
                 break;
         case NETDEV_UNREGISTER:
                 vlan_proc_rem_dev(dev);
@@ -374,7 +371,7 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
         if ((event == NETDEV_UP) &&
             (dev->features & NETIF_F_HW_VLAN_FILTER) &&
             dev->netdev_ops->ndo_vlan_rx_add_vid) {
-                pr_info("8021q: adding VLAN 0 to HW filter on device %s\n",
+                pr_info("adding VLAN 0 to HW filter on device %s\n",
                         dev->name);
                 dev->netdev_ops->ndo_vlan_rx_add_vid(dev, 0);
         }
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 9da07e30d1a..9fd45f3571f 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -74,6 +74,37 @@ static inline struct vlan_dev_info *vlan_dev_info(const struct net_device *dev)
         return netdev_priv(dev);
 }
 
+static inline struct net_device *vlan_group_get_device(struct vlan_group *vg,
+                                                       u16 vlan_id)
+{
+        struct net_device **array;
+        array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+        return array ? array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] : NULL;
+}
+
+static inline void vlan_group_set_device(struct vlan_group *vg,
+                                         u16 vlan_id,
+                                         struct net_device *dev)
+{
+        struct net_device **array;
+        if (!vg)
+                return;
+        array = vg->vlan_devices_arrays[vlan_id / VLAN_GROUP_ARRAY_PART_LEN];
+        array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
+}
+
+/* Must be invoked with rcu_read_lock or with RTNL. */
+static inline struct net_device *vlan_find_dev(struct net_device *real_dev,
+                                               u16 vlan_id)
+{
+        struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp);
+
+        if (grp)
+                return vlan_group_get_device(grp, vlan_id);
+
+        return NULL;
+}
+
 /* found in vlan_dev.c */
 void vlan_dev_set_ingress_priority(const struct net_device *dev,
                                    u32 skb_prio, u16 vlan_prio);
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index fcc684678af..f1f2f7bb666 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -63,6 +63,27 @@ bool vlan_do_receive(struct sk_buff **skbp)
         return true;
 }
 
+/* Must be invoked with rcu_read_lock or with RTNL. */
+struct net_device *__vlan_find_dev_deep(struct net_device *real_dev,
+                                        u16 vlan_id)
+{
+        struct vlan_group *grp = rcu_dereference_rtnl(real_dev->vlgrp);
+
+        if (grp) {
+                return vlan_group_get_device(grp, vlan_id);
+        } else {
+                /*
+                 * Bonding slaves do not have grp assigned to themselves.
+                 * Grp is assigned to bonding master instead.
+                 */
+                if (netif_is_bond_slave(real_dev))
+                        return __vlan_find_dev_deep(real_dev->master, vlan_id);
+        }
+
+        return NULL;
+}
+EXPORT_SYMBOL(__vlan_find_dev_deep);
+
 struct net_device *vlan_dev_real_dev(const struct net_device *dev)
 {
         return vlan_dev_info(dev)->real_dev;
@@ -75,31 +96,6 @@ u16 vlan_dev_vlan_id(const struct net_device *dev)
 }
 EXPORT_SYMBOL(vlan_dev_vlan_id);
 
-/* 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)
-{
-        __vlan_hwaccel_put_tag(skb, vlan_tci);
-        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)
-{
-        __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)
-{
-        __vlan_hwaccel_put_tag(napi->skb, vlan_tci);
-        return napi_gro_frags(napi);
-}
-EXPORT_SYMBOL(vlan_gro_frags);
-
 static struct sk_buff *vlan_reorder_header(struct sk_buff *skb)
 {
         if (skb_cow(skb, skb_headroom(skb)) < 0)
@@ -171,6 +167,8 @@ struct sk_buff *vlan_untag(struct sk_buff *skb)
         if (unlikely(!skb))
                 goto err_free;
 
+        skb_reset_network_header(skb);
+        skb_reset_transport_header(skb);
         return skb;
 
 err_free:
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 6e82148edfc..9d40a071d03 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -20,6 +20,8 @@
  *              2 of the License, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/skbuff.h>
@@ -55,7 +57,7 @@ static int vlan_dev_rebuild_header(struct sk_buff *skb)
                 return arp_find(veth->h_dest, skb);
 #endif
         default:
-                pr_debug("%s: unable to resolve type %X addresses.\n",
+                pr_debug("%s: unable to resolve type %X addresses\n",
                          dev->name, ntohs(veth->h_vlan_encapsulated_proto));
 
                 memcpy(veth->h_source, dev->dev_addr, ETH_ALEN);
@@ -595,8 +597,7 @@ static u32 vlan_dev_fix_features(struct net_device *dev, u32 features)
         features &= real_dev->features;
         features &= real_dev->vlan_features;
 
-        if (old_features & NETIF_F_SOFT_FEATURES)
-                features |= old_features & NETIF_F_SOFT_FEATURES;
+        features |= old_features & NETIF_F_SOFT_FEATURES;
 
         if (dev_ethtool_get_rx_csum(real_dev))
                 features |= NETIF_F_RXCSUM;
@@ -694,7 +695,7 @@ void vlan_setup(struct net_device *dev)
         ether_setup(dev);
 
         dev->priv_flags         |= IFF_802_1Q_VLAN;
-        dev->priv_flags         &= ~IFF_XMIT_DST_RELEASE;
+        dev->priv_flags         &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING);
         dev->tx_queue_len       = 0;
 
         dev->netdev_ops         = &vlan_netdev_ops;
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index d940c49d168..d34b6daf893 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -17,6 +17,8 @@
  * Jan 20, 1998        Ben Greear     Initial Version
  *****************************************************************************/
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -155,7 +157,7 @@ int __net_init vlan_proc_init(struct net *net)
         return 0;
 
 err:
-        pr_err("%s: can't create entry in proc filesystem!\n", __func__);
+        pr_err("can't create entry in proc filesystem!\n");
         vlan_proc_cleanup(net);
         return -ENOBUFS;
 }
@@ -229,7 +231,7 @@ static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 
         ++*pos;
 
-        dev = (struct net_device *)v;
+        dev = v;
         if (v == SEQ_START_TOKEN)
                 dev = net_device_entry(&net->dev_base_head);