Merge branch 'linus' into oprofile-v2

Conflicts:
	arch/x86/kernel/apic_32.c
	arch/x86/oprofile/nmi_int.c
	include/linux/pci_ids.h

1 files changed, 42 insertions, 4 deletions

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index b5f40d7ef724..3fe49d808957 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -27,6 +27,7 @@ enum qdisc_state_t
 {
 	__QDISC_STATE_RUNNING,
 	__QDISC_STATE_SCHED,
+	__QDISC_STATE_DEACTIVATED,
 };
 
 struct qdisc_size_table {
@@ -52,6 +53,7 @@ struct Qdisc
 	atomic_t		refcnt;
 	unsigned long		state;
 	struct sk_buff		*gso_skb;
+	struct sk_buff_head	requeue;
 	struct sk_buff_head	q;
 	struct netdev_queue	*dev_queue;
 	struct Qdisc		*next_sched;
@@ -60,7 +62,6 @@ struct Qdisc
 	struct gnet_stats_basic	bstats;
 	struct gnet_stats_queue	qstats;
 	struct gnet_stats_rate_est	rate_est;
-	struct rcu_head 	q_rcu;
 	int			(*reshape_fail)(struct sk_buff *skb,
 					struct Qdisc *q);
 
@@ -193,10 +194,35 @@ static inline struct Qdisc *qdisc_root(struct Qdisc *qdisc)
 	return qdisc->dev_queue->qdisc;
 }
 
+static inline struct Qdisc *qdisc_root_sleeping(struct Qdisc *qdisc)
+{
+	return qdisc->dev_queue->qdisc_sleeping;
+}
+
+/* The qdisc root lock is a mechanism by which to top level
+ * of a qdisc tree can be locked from any qdisc node in the
+ * forest.  This allows changing the configuration of some
+ * aspect of the qdisc tree while blocking out asynchronous
+ * qdisc access in the packet processing paths.
+ *
+ * It is only legal to do this when the root will not change
+ * on us.  Otherwise we'll potentially lock the wrong qdisc
+ * root.  This is enforced by holding the RTNL semaphore, which
+ * all users of this lock accessor must do.
+ */
 static inline spinlock_t *qdisc_root_lock(struct Qdisc *qdisc)
 {
 	struct Qdisc *root = qdisc_root(qdisc);
 
+	ASSERT_RTNL();
+	return qdisc_lock(root);
+}
+
+static inline spinlock_t *qdisc_root_sleeping_lock(struct Qdisc *qdisc)
+{
+	struct Qdisc *root = qdisc_root_sleeping(qdisc);
+
+	ASSERT_RTNL();
 	return qdisc_lock(root);
 }
 
@@ -207,12 +233,12 @@ static inline struct net_device *qdisc_dev(struct Qdisc *qdisc)
 
 static inline void sch_tree_lock(struct Qdisc *q)
 {
-	spin_lock_bh(qdisc_root_lock(q));
+	spin_lock_bh(qdisc_root_sleeping_lock(q));
 }
 
 static inline void sch_tree_unlock(struct Qdisc *q)
 {
-	spin_unlock_bh(qdisc_root_lock(q));
+	spin_unlock_bh(qdisc_root_sleeping_lock(q));
 }
 
 #define tcf_tree_lock(tp)	sch_tree_lock((tp)->q)
@@ -331,6 +357,18 @@ static inline unsigned int qdisc_pkt_len(struct sk_buff *skb)
 	return qdisc_skb_cb(skb)->pkt_len;
 }
 
+/* additional qdisc xmit flags (NET_XMIT_MASK in linux/netdevice.h) */
+enum net_xmit_qdisc_t {
+	__NET_XMIT_STOLEN = 0x00010000,
+	__NET_XMIT_BYPASS = 0x00020000,
+};
+
+#ifdef CONFIG_NET_CLS_ACT
+#define net_xmit_drop_count(e)	((e) & __NET_XMIT_STOLEN ? 0 : 1)
+#else
+#define net_xmit_drop_count(e)	(1)
+#endif
+
 static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
 #ifdef CONFIG_NET_SCHED
@@ -343,7 +381,7 @@ static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 static inline int qdisc_enqueue_root(struct sk_buff *skb, struct Qdisc *sch)
 {
 	qdisc_skb_cb(skb)->pkt_len = skb->len;
-	return qdisc_enqueue(skb, sch);
+	return qdisc_enqueue(skb, sch) & NET_XMIT_MASK;
 }
 
 static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,