sg: restore command permission for TYPE_SCANNER

[linux-2.6-omap-h63xx.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index 01993ad74e760235267e0ade106bdcac16ae6890..60c51f7658870257571ee9455f95bb48888b4398 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1339,19 +1339,23 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
 }
 
 
-void __netif_schedule(struct Qdisc *q)
+static inline void __netif_reschedule(struct Qdisc *q)
 {
-       if (!test_and_set_bit(__QDISC_STATE_SCHED, &q->state)) {
-               struct softnet_data *sd;
-               unsigned long flags;
+       struct softnet_data *sd;
+       unsigned long flags;
 
-               local_irq_save(flags);
-               sd = &__get_cpu_var(softnet_data);
-               q->next_sched = sd->output_queue;
-               sd->output_queue = q;
-               raise_softirq_irqoff(NET_TX_SOFTIRQ);
-               local_irq_restore(flags);
-       }
+       local_irq_save(flags);
+       sd = &__get_cpu_var(softnet_data);
+       q->next_sched = sd->output_queue;
+       sd->output_queue = q;
+       raise_softirq_irqoff(NET_TX_SOFTIRQ);
+       local_irq_restore(flags);
+}
+
+void __netif_schedule(struct Qdisc *q)
+{
+       if (!test_and_set_bit(__QDISC_STATE_SCHED, &q->state))
+               __netif_reschedule(q);
 }
 EXPORT_SYMBOL(__netif_schedule);
 
@@ -1800,9 +1804,13 @@ gso:
 
                spin_lock(root_lock);
 
-               rc = qdisc_enqueue_root(skb, q);
-               qdisc_run(q);
-
+               if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) {
+                       kfree_skb(skb);
+                       rc = NET_XMIT_DROP;
+               } else {
+                       rc = qdisc_enqueue_root(skb, q);
+                       qdisc_run(q);
+               }
                spin_unlock(root_lock);
 
                goto out;
@@ -1939,22 +1947,6 @@ int netif_rx_ni(struct sk_buff *skb)
 
 EXPORT_SYMBOL(netif_rx_ni);
 
-static inline struct net_device *skb_bond(struct sk_buff *skb)
-{
-       struct net_device *dev = skb->dev;
-
-       if (dev->master) {
-               if (skb_bond_should_drop(skb)) {
-                       kfree_skb(skb);
-                       return NULL;
-               }
-               skb->dev = dev->master;
-       }
-
-       return dev;
-}
-
-
 static void net_tx_action(struct softirq_action *h)
 {
        struct softnet_data *sd = &__get_cpu_var(softnet_data);
@@ -1990,15 +1982,17 @@ static void net_tx_action(struct softirq_action *h)
 
                        head = head->next_sched;
 
-                       smp_mb__before_clear_bit();
-                       clear_bit(__QDISC_STATE_SCHED, &q->state);
-
                        root_lock = qdisc_lock(q);
                        if (spin_trylock(root_lock)) {
+                               smp_mb__before_clear_bit();
+                               clear_bit(__QDISC_STATE_SCHED,
+                                         &q->state);
                                qdisc_run(q);
                                spin_unlock(root_lock);
                        } else {
-                               __netif_schedule(q);
+                               if (!test_bit(__QDISC_STATE_DEACTIVATED,
+                                             &q->state))
+                                       __netif_reschedule(q);
                        }
                }
        }
@@ -2100,7 +2094,8 @@ static int ing_filter(struct sk_buff *skb)
        q = rxq->qdisc;
        if (q != &noop_qdisc) {
                spin_lock(qdisc_lock(q));
-               result = qdisc_enqueue_root(skb, q);
+               if (likely(!test_bit(__QDISC_STATE_DEACTIVATED, &q->state)))
+                       result = qdisc_enqueue_root(skb, q);
                spin_unlock(qdisc_lock(q));
        }
 
@@ -2181,6 +2176,7 @@ int netif_receive_skb(struct sk_buff *skb)
 {
        struct packet_type *ptype, *pt_prev;
        struct net_device *orig_dev;
+       struct net_device *null_or_orig;
        int ret = NET_RX_DROP;
        __be16 type;
 
@@ -2194,10 +2190,14 @@ int netif_receive_skb(struct sk_buff *skb)
        if (!skb->iif)
                skb->iif = skb->dev->ifindex;
 
-       orig_dev = skb_bond(skb);
-
-       if (!orig_dev)
-               return NET_RX_DROP;
+       null_or_orig = NULL;
+       orig_dev = skb->dev;
+       if (orig_dev->master) {
+               if (skb_bond_should_drop(skb))
+                       null_or_orig = orig_dev; /* deliver only exact match */
+               else
+                       skb->dev = orig_dev->master;
+       }
 
        __get_cpu_var(netdev_rx_stat).total++;
 
@@ -2221,7 +2221,8 @@ int netif_receive_skb(struct sk_buff *skb)
 #endif
 
        list_for_each_entry_rcu(ptype, &ptype_all, list) {
-               if (!ptype->dev || ptype->dev == skb->dev) {
+               if (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+                   ptype->dev == orig_dev) {
                        if (pt_prev)
                                ret = deliver_skb(skb, pt_prev, orig_dev);
                        pt_prev = ptype;
@@ -2246,7 +2247,8 @@ ncls:
        list_for_each_entry_rcu(ptype,
                        &ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
                if (ptype->type == type &&
-                   (!ptype->dev || ptype->dev == skb->dev)) {
+                   (ptype->dev == null_or_orig || ptype->dev == skb->dev ||
+                    ptype->dev == orig_dev)) {
                        if (pt_prev)
                                ret = deliver_skb(skb, pt_prev, orig_dev);
                        pt_prev = ptype;