Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  s2io: fixing DBG_PRINT() macro
  ath9k: fix dma direction for map/unmap in ath_rx_tasklet
  net: dev_forward_skb should call nf_reset
  net sched: fix race in mirred device removal
  tun: avoid BUG, dump packet on GSO errors
  bonding: set device in RLB ARP packet handler
  wimax/i2400m: Add PID & VID for Intel WiMAX 6250
  ipv6: Don't add routes to ipv6 disabled interfaces.
  net: Fix skb_copy_expand() handling of ->csum_start
  net: Fix corruption of skb csum field in pskb_expand_head() of net/core/skbuff.c
  macvtap: Limit packet queue length
  ixgbe/igb: catch invalid VF settings
  bnx2x: Advance a module version
  bnx2x: Protect statistics ramrod and sequence number
  bnx2x: Protect a SM state change
  wireless: use netif_rx_ni in ieee80211_send_layer2_update

19 files changed, 151 insertions, 36 deletions

diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index 8bd23687c530..bb0872a63315 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -1062,6 +1062,10 @@ struct bnx2x {
 
         /* used to synchronize stats collecting */
         int                     stats_state;
+
+        /* used for synchronization of concurrent threads statistics handling */
+        spinlock_t              stats_lock;
+
         /* used by dmae command loader */
         struct dmae_command     stats_dmae;
         int                     executer_idx;
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 57ff5b3bcce6..46167c081727 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -57,8 +57,8 @@
 #include "bnx2x_init_ops.h"
 #include "bnx2x_dump.h"
 
-#define DRV_MODULE_VERSION      "1.52.53-1"
-#define DRV_MODULE_RELDATE      "2010/18/04"
+#define DRV_MODULE_VERSION      "1.52.53-2"
+#define DRV_MODULE_RELDATE      "2010/21/07"
 #define BNX2X_BC_VER            0x040200
 
 #include <linux/firmware.h>
@@ -3789,6 +3789,8 @@ static void bnx2x_storm_stats_post(struct bnx2x *bp)
                 struct eth_query_ramrod_data ramrod_data = {0};
                 int i, rc;
 
+                spin_lock_bh(&bp->stats_lock);
+
                 ramrod_data.drv_counter = bp->stats_counter++;
                 ramrod_data.collect_port = bp->port.pmf ? 1 : 0;
                 for_each_queue(bp, i)
@@ -3802,6 +3804,8 @@ static void bnx2x_storm_stats_post(struct bnx2x *bp)
                         bp->spq_left++;
                         bp->stats_pending = 1;
                 }
+
+                spin_unlock_bh(&bp->stats_lock);
         }
 }
 
@@ -4367,6 +4371,14 @@ static int bnx2x_storm_stats_update(struct bnx2x *bp)
         struct host_func_stats *fstats = bnx2x_sp(bp, func_stats);
         struct bnx2x_eth_stats *estats = &bp->eth_stats;
         int i;
+        u16 cur_stats_counter;
+
+        /* Make sure we use the value of the counter
+         * used for sending the last stats ramrod.
+         */
+        spin_lock_bh(&bp->stats_lock);
+        cur_stats_counter = bp->stats_counter - 1;
+        spin_unlock_bh(&bp->stats_lock);
 
         memcpy(&(fstats->total_bytes_received_hi),
                &(bnx2x_sp(bp, func_stats_base)->total_bytes_received_hi),
@@ -4394,25 +4406,22 @@ static int bnx2x_storm_stats_update(struct bnx2x *bp)
                 u32 diff;
 
                 /* are storm stats valid? */
-                if ((u16)(le16_to_cpu(xclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(xclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by xstorm"
                            "  xstorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, xclient->stats_counter, bp->stats_counter);
+                           i, xclient->stats_counter, cur_stats_counter + 1);
                         return -1;
                 }
-                if ((u16)(le16_to_cpu(tclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(tclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by tstorm"
                            "  tstorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, tclient->stats_counter, bp->stats_counter);
+                           i, tclient->stats_counter, cur_stats_counter + 1);
                         return -2;
                 }
-                if ((u16)(le16_to_cpu(uclient->stats_counter) + 1) !=
-                                                        bp->stats_counter) {
+                if (le16_to_cpu(uclient->stats_counter) != cur_stats_counter) {
                         DP(BNX2X_MSG_STATS, "[%d] stats not updated by ustorm"
                            "  ustorm counter (0x%x) != stats_counter (0x%x)\n",
-                           i, uclient->stats_counter, bp->stats_counter);
+                           i, uclient->stats_counter, cur_stats_counter + 1);
                         return -4;
                 }
 
@@ -4849,16 +4858,18 @@ static const struct {
 
 static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event)
 {
-        enum bnx2x_stats_state state = bp->stats_state;
+        enum bnx2x_stats_state state;
 
         if (unlikely(bp->panic))
                 return;
 
-        bnx2x_stats_stm[state][event].action(bp);
+        /* Protect a state change flow */
+        spin_lock_bh(&bp->stats_lock);
+        state = bp->stats_state;
         bp->stats_state = bnx2x_stats_stm[state][event].next_state;
+        spin_unlock_bh(&bp->stats_lock);
 
-        /* Make sure the state has been "changed" */
-        smp_wmb();
+        bnx2x_stats_stm[state][event].action(bp);
 
         if ((event != STATS_EVENT_UPDATE) || netif_msg_timer(bp))
                 DP(BNX2X_MSG_STATS, "state %d -> event %d -> state %d\n",
@@ -9908,6 +9919,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp)
 
         mutex_init(&bp->port.phy_mutex);
         mutex_init(&bp->fw_mb_mutex);
+        spin_lock_init(&bp->stats_lock);
 #ifdef BCM_CNIC
         mutex_init(&bp->cnic_mutex);
 #endif
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index df483076eda6..8d7dfd2f1e90 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -822,7 +822,7 @@ static int rlb_initialize(struct bonding *bond)
 
         /*initialize packet type*/
         pk_type->type = cpu_to_be16(ETH_P_ARP);
-        pk_type->dev = NULL;
+        pk_type->dev = bond->dev;
         pk_type->func = rlb_arp_recv;
 
         /* register to receive ARPs */
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 3881918f5382..cea37e0837ff 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1722,6 +1722,15 @@ static int __devinit igb_probe(struct pci_dev *pdev,
         u16 eeprom_apme_mask = IGB_EEPROM_APME;
         u32 part_num;
 
+        /* Catch broken hardware that put the wrong VF device ID in
+         * the PCIe SR-IOV capability.
+         */
+        if (pdev->is_virtfn) {
+                WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
+                     pci_name(pdev), pdev->vendor, pdev->device);
+                return -EINVAL;
+        }
+
         err = pci_enable_device_mem(pdev);
         if (err)
                 return err;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 7b5d9764f317..74d9b6df3029 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6492,6 +6492,15 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 #endif
         u32 part_num, eec;
 
+        /* Catch broken hardware that put the wrong VF device ID in
+         * the PCIe SR-IOV capability.
+         */
+        if (pdev->is_virtfn) {
+                WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
+                     pci_name(pdev), pdev->vendor, pdev->device);
+                return -EINVAL;
+        }
+
         err = pci_enable_device_mem(pdev);
         if (err)
                 return err;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 87e8d4cb4057..f15fe2cf72ae 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -499,7 +499,7 @@ static const struct net_device_ops macvlan_netdev_ops = {
         .ndo_validate_addr      = eth_validate_addr,
 };
 
-static void macvlan_setup(struct net_device *dev)
+void macvlan_common_setup(struct net_device *dev)
 {
         ether_setup(dev);
 
@@ -508,6 +508,12 @@ static void macvlan_setup(struct net_device *dev)
         dev->destructor         = free_netdev;
         dev->header_ops         = &macvlan_hard_header_ops,
         dev->ethtool_ops        = &macvlan_ethtool_ops;
+}
+EXPORT_SYMBOL_GPL(macvlan_common_setup);
+
+static void macvlan_setup(struct net_device *dev)
+{
+        macvlan_common_setup(dev);
         dev->tx_queue_len       = 0;
 }
 
@@ -705,7 +711,6 @@ int macvlan_link_register(struct rtnl_link_ops *ops)
         /* common fields */
         ops->priv_size          = sizeof(struct macvlan_dev);
         ops->get_tx_queues      = macvlan_get_tx_queues;
-        ops->setup              = macvlan_setup;
         ops->validate           = macvlan_validate;
         ops->maxtype            = IFLA_MACVLAN_MAX;
         ops->policy             = macvlan_policy;
@@ -719,6 +724,7 @@ EXPORT_SYMBOL_GPL(macvlan_link_register);
 
 static struct rtnl_link_ops macvlan_link_ops = {
         .kind           = "macvlan",
+        .setup          = macvlan_setup,
         .newlink        = macvlan_newlink,
         .dellink        = macvlan_dellink,
 };
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index a8a94e2f6ddc..ff02b836c3c4 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -180,11 +180,18 @@ static int macvtap_forward(struct net_device *dev, struct sk_buff *skb)
 {
         struct macvtap_queue *q = macvtap_get_queue(dev, skb);
         if (!q)
-                return -ENOLINK;
+                goto drop;
+
+        if (skb_queue_len(&q->sk.sk_receive_queue) >= dev->tx_queue_len)
+                goto drop;
 
         skb_queue_tail(&q->sk.sk_receive_queue, skb);
         wake_up_interruptible_poll(sk_sleep(&q->sk), POLLIN | POLLRDNORM | POLLRDBAND);
-        return 0;
+        return NET_RX_SUCCESS;
+
+drop:
+        kfree_skb(skb);
+        return NET_RX_DROP;
 }
 
 /*
@@ -235,8 +242,15 @@ static void macvtap_dellink(struct net_device *dev,
         macvlan_dellink(dev, head);
 }
 
+static void macvtap_setup(struct net_device *dev)
+{
+        macvlan_common_setup(dev);
+        dev->tx_queue_len = TUN_READQ_SIZE;
+}
+
 static struct rtnl_link_ops macvtap_link_ops __read_mostly = {
         .kind           = "macvtap",
+        .setup          = macvtap_setup,
         .newlink        = macvtap_newlink,
         .dellink        = macvtap_dellink,
 };
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 5e52c75892df..7f3a53dcc6ef 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -65,7 +65,7 @@ static int debug_level = ERR_DBG;
 
 /* DEBUG message print. */
 #define DBG_PRINT(dbg_level, fmt, args...) do {                 \
-        if (dbg_level >= debug_level)                           \
+        if (dbg_level <= debug_level)                           \
                 pr_info(fmt, ##args);                           \
         } while (0)
 
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 6ad6fe706312..63042596f0cf 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -736,8 +736,18 @@ static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
                                 gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
                         else if (sinfo->gso_type & SKB_GSO_UDP)
                                 gso.gso_type = VIRTIO_NET_HDR_GSO_UDP;
-                        else
-                                BUG();
+                        else {
+                                printk(KERN_ERR "tun: unexpected GSO type: "
+                                       "0x%x, gso_size %d, hdr_len %d\n",
+                                       sinfo->gso_type, gso.gso_size,
+                                       gso.hdr_len);
+                                print_hex_dump(KERN_ERR, "tun: ",
+                                               DUMP_PREFIX_NONE,
+                                               16, 1, skb->head,
+                                               min((int)gso.hdr_len, 64), true);
+                                WARN_ON_ONCE(1);
+                                return -EINVAL;
+                        }
                         if (sinfo->gso_type & SKB_GSO_TCP_ECN)
                                 gso.gso_type |= VIRTIO_NET_HDR_GSO_ECN;
                 } else
diff --git a/drivers/net/wimax/i2400m/i2400m-usb.h b/drivers/net/wimax/i2400m/i2400m-usb.h
index 2d7c96d7e865..eb80243e22df 100644
--- a/drivers/net/wimax/i2400m/i2400m-usb.h
+++ b/drivers/net/wimax/i2400m/i2400m-usb.h
@@ -152,6 +152,7 @@ enum {
         /* Device IDs */
         USB_DEVICE_ID_I6050 = 0x0186,
         USB_DEVICE_ID_I6050_2 = 0x0188,
+        USB_DEVICE_ID_I6250 = 0x0187,
 };
 
 
diff --git a/drivers/net/wimax/i2400m/usb.c b/drivers/net/wimax/i2400m/usb.c
index 0d5081d77dc0..d3365ac85dde 100644
--- a/drivers/net/wimax/i2400m/usb.c
+++ b/drivers/net/wimax/i2400m/usb.c
@@ -491,6 +491,7 @@ int i2400mu_probe(struct usb_interface *iface,
         switch (id->idProduct) {
         case USB_DEVICE_ID_I6050:
         case USB_DEVICE_ID_I6050_2:
+        case USB_DEVICE_ID_I6250:
                 i2400mu->i6050 = 1;
                 break;
         default:
@@ -739,6 +740,7 @@ static
 struct usb_device_id i2400mu_id_table[] = {
         { USB_DEVICE(0x8086, USB_DEVICE_ID_I6050) },
         { USB_DEVICE(0x8086, USB_DEVICE_ID_I6050_2) },
+        { USB_DEVICE(0x8086, USB_DEVICE_ID_I6250) },
         { USB_DEVICE(0x8086, 0x0181) },
         { USB_DEVICE(0x8086, 0x1403) },
         { USB_DEVICE(0x8086, 0x1405) },
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index ca6065b71b46..e3e52913d83a 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -844,9 +844,9 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
         int dma_type;
 
         if (edma)
-                dma_type = DMA_FROM_DEVICE;
-        else
                 dma_type = DMA_BIDIRECTIONAL;
+        else
+                dma_type = DMA_FROM_DEVICE;
 
         qtype = hp ? ATH9K_RX_QUEUE_HP : ATH9K_RX_QUEUE_LP;
         spin_lock_bh(&sc->rx.rxbuflock);
diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
index 9ea047aca795..1ffaeffeff74 100644
--- a/include/linux/if_macvlan.h
+++ b/include/linux/if_macvlan.h
@@ -67,6 +67,8 @@ static inline void macvlan_count_rx(const struct macvlan_dev *vlan,
         }
 }
 
+extern void macvlan_common_setup(struct net_device *dev);
+
 extern int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
                                   struct nlattr *tb[], struct nlattr *data[],
                                   int (*receive)(struct sk_buff *skb),
diff --git a/include/net/tc_act/tc_mirred.h b/include/net/tc_act/tc_mirred.h
index ceac661cdfd5..cfe2943690ff 100644
--- a/include/net/tc_act/tc_mirred.h
+++ b/include/net/tc_act/tc_mirred.h
@@ -9,6 +9,7 @@ struct tcf_mirred {
         int                     tcfm_ifindex;
         int                     tcfm_ok_push;
         struct net_device       *tcfm_dev;
+        struct list_head        tcfm_list;
 };
 #define to_mirred(pc) \
         container_of(pc, struct tcf_mirred, common)
diff --git a/net/core/dev.c b/net/core/dev.c
index 0ea10f849be8..1f466e82ac33 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1488,6 +1488,7 @@ static inline void net_timestamp_check(struct sk_buff *skb)
 int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
 {
         skb_orphan(skb);
+        nf_reset(skb);
 
         if (!(dev->flags & IFF_UP) ||
             (skb->len > (dev->mtu + dev->hard_header_len))) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 34432b4e96bb..ce88293a34e2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -843,7 +843,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
         skb->network_header   += off;
         if (skb_mac_header_was_set(skb))
                 skb->mac_header += off;
-        skb->csum_start       += nhead;
+        /* Only adjust this if it actually is csum_start rather than csum */
+        if (skb->ip_summed == CHECKSUM_PARTIAL)
+                skb->csum_start += nhead;
         skb->cloned   = 0;
         skb->hdr_len  = 0;
         skb->nohdr    = 0;
@@ -930,7 +932,8 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
         copy_skb_header(n, skb);
 
         off                  = newheadroom - oldheadroom;
-        n->csum_start       += off;
+        if (n->ip_summed == CHECKSUM_PARTIAL)
+                n->csum_start += off;
 #ifdef NET_SKBUFF_DATA_USES_OFFSET
         n->transport_header += off;
         n->network_header   += off;
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e1a698df5706..784f34d11fdd 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1760,7 +1760,10 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
 
         idev = ipv6_find_idev(dev);
         if (!idev)
-                return NULL;
+                return ERR_PTR(-ENOBUFS);
+
+        if (idev->cnf.disable_ipv6)
+                return ERR_PTR(-EACCES);
 
         /* Add default multicast route */
         addrconf_add_mroute(dev);
@@ -2129,8 +2132,9 @@ static int inet6_addr_add(struct net *net, int ifindex, struct in6_addr *pfx,
         if (!dev)
                 return -ENODEV;
 
-        if ((idev = addrconf_add_dev(dev)) == NULL)
-                return -ENOBUFS;
+        idev = addrconf_add_dev(dev);
+        if (IS_ERR(idev))
+                return PTR_ERR(idev);
 
         scope = ipv6_addr_scope(pfx);
 
@@ -2377,7 +2381,7 @@ static void addrconf_dev_config(struct net_device *dev)
         }
 
         idev = addrconf_add_dev(dev);
-        if (idev == NULL)
+        if (IS_ERR(idev))
                 return;
 
         memset(&addr, 0, sizeof(struct in6_addr));
@@ -2468,7 +2472,7 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
         ASSERT_RTNL();
 
         idev = addrconf_add_dev(dev);
-        if (!idev) {
+        if (IS_ERR(idev)) {
                 printk(KERN_DEBUG "init ip6-ip6: add_dev failed\n");
                 return;
         }
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c7000a6ca379..67ee34f57df7 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -632,7 +632,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
         skb->dev = sta->sdata->dev;
         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
         memset(skb->cb, 0, sizeof(skb->cb));
-        netif_rx(skb);
+        netif_rx_ni(skb);
 }
 
 static void sta_apply_parameters(struct ieee80211_local *local,
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index c0b6863e3b87..1980b71c283f 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -33,6 +33,7 @@
 static struct tcf_common *tcf_mirred_ht[MIRRED_TAB_MASK + 1];
 static u32 mirred_idx_gen;
 static DEFINE_RWLOCK(mirred_lock);
+static LIST_HEAD(mirred_list);
 
 static struct tcf_hashinfo mirred_hash_info = {
         .htab   =       tcf_mirred_ht,
@@ -47,7 +48,9 @@ static inline int tcf_mirred_release(struct tcf_mirred *m, int bind)
                         m->tcf_bindcnt--;
                 m->tcf_refcnt--;
                 if(!m->tcf_bindcnt && m->tcf_refcnt <= 0) {
-                        dev_put(m->tcfm_dev);
+                        list_del(&m->tcfm_list);
+                        if (m->tcfm_dev)
+                                dev_put(m->tcfm_dev);
                         tcf_hash_destroy(&m->common, &mirred_hash_info);
                         return 1;
                 }
@@ -134,8 +137,10 @@ static int tcf_mirred_init(struct nlattr *nla, struct nlattr *est,
                 m->tcfm_ok_push = ok_push;
         }
         spin_unlock_bh(&m->tcf_lock);
-        if (ret == ACT_P_CREATED)
+        if (ret == ACT_P_CREATED) {
+                list_add(&m->tcfm_list, &mirred_list);
                 tcf_hash_insert(pc, &mirred_hash_info);
+        }
 
         return ret;
 }
@@ -162,9 +167,14 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
         m->tcf_tm.lastuse = jiffies;
 
         dev = m->tcfm_dev;
+        if (!dev) {
+                printk_once(KERN_NOTICE "tc mirred: target device is gone\n");
+                goto out;
+        }
+
         if (!(dev->flags & IFF_UP)) {
                 if (net_ratelimit())
-                        pr_notice("tc mirred to Houston: device %s is gone!\n",
+                        pr_notice("tc mirred to Houston: device %s is down\n",
                                   dev->name);
                 goto out;
         }
@@ -232,6 +242,28 @@ nla_put_failure:
         return -1;
 }
 
+static int mirred_device_event(struct notifier_block *unused,
+                               unsigned long event, void *ptr)
+{
+        struct net_device *dev = ptr;
+        struct tcf_mirred *m;
+
+        if (event == NETDEV_UNREGISTER)
+                list_for_each_entry(m, &mirred_list, tcfm_list) {
+                        if (m->tcfm_dev == dev) {
+                                dev_put(dev);
+                                m->tcfm_dev = NULL;
+                        }
+                }
+
+        return NOTIFY_DONE;
+}
+
+static struct notifier_block mirred_device_notifier = {
+        .notifier_call = mirred_device_event,
+};
+
+
 static struct tc_action_ops act_mirred_ops = {
         .kind           =       "mirred",
         .hinfo          =       &mirred_hash_info,
@@ -252,12 +284,17 @@ MODULE_LICENSE("GPL");
 
 static int __init mirred_init_module(void)
 {
+        int err = register_netdevice_notifier(&mirred_device_notifier);
+        if (err)
+                return err;
+
         pr_info("Mirror/redirect action on\n");
         return tcf_register_action(&act_mirred_ops);
 }
 
 static void __exit mirred_cleanup_module(void)
 {
+        unregister_netdevice_notifier(&mirred_device_notifier);
         tcf_unregister_action(&act_mirred_ops);
 }