nl80211: Event notifications for MLME events

[safe/jmp/linux-2.6] / include / net / sch_generic.h

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index da6839a..964ffa0 100644 (file)
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -42,25 +42,17 @@ struct Qdisc
        int                     (*enqueue)(struct sk_buff *skb, struct Qdisc *dev);
        struct sk_buff *        (*dequeue)(struct Qdisc *dev);
        unsigned                flags;
-#define TCQ_F_BUILTIN  1
-#define TCQ_F_THROTTLED        2
-#define TCQ_F_INGRESS  4
+#define TCQ_F_BUILTIN          1
+#define TCQ_F_THROTTLED                2
+#define TCQ_F_INGRESS          4
+#define TCQ_F_WARN_NONWC       (1 << 16)
        int                     padded;
        struct Qdisc_ops        *ops;
        struct qdisc_size_table *stab;
+       struct list_head        list;
        u32                     handle;
        u32                     parent;
        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;
-       struct list_head        list;
-
-       struct gnet_stats_basic bstats;
-       struct gnet_stats_queue qstats;
        struct gnet_stats_rate_est      rate_est;
        int                     (*reshape_fail)(struct sk_buff *skb,
                                        struct Qdisc *q);
@@ -71,6 +63,17 @@ struct Qdisc
         * and it will live until better solution will be invented.
         */
        struct Qdisc            *__parent;
+       struct netdev_queue     *dev_queue;
+       struct Qdisc            *next_sched;
+
+       struct sk_buff          *gso_skb;
+       /*
+        * For performance sake on SMP, we put highly modified fields at the end
+        */
+       unsigned long           state;
+       struct sk_buff_head     q;
+       struct gnet_stats_basic bstats;
+       struct gnet_stats_queue qstats;
 };
 
 struct Qdisc_class_ops
@@ -112,7 +115,6 @@ struct Qdisc_ops
        int                     (*enqueue)(struct sk_buff *, struct Qdisc *);
        struct sk_buff *        (*dequeue)(struct Qdisc *);
        struct sk_buff *        (*peek)(struct Qdisc *);
-       int                     (*requeue)(struct sk_buff *, struct Qdisc *);
        unsigned int            (*drop)(struct Qdisc *);
 
        int                     (*init)(struct Qdisc *, struct nlattr *arg);
@@ -438,19 +440,33 @@ static inline struct sk_buff *qdisc_peek_head(struct Qdisc *sch)
        return skb_peek(&sch->q);
 }
 
-static inline int __qdisc_requeue(struct sk_buff *skb, struct Qdisc *sch,
-                                 struct sk_buff_head *list)
+/* generic pseudo peek method for non-work-conserving qdisc */
+static inline struct sk_buff *qdisc_peek_dequeued(struct Qdisc *sch)
 {
-       __skb_queue_head(list, skb);
-       sch->qstats.backlog += qdisc_pkt_len(skb);
-       sch->qstats.requeues++;
+       /* we can reuse ->gso_skb because peek isn't called for root qdiscs */
+       if (!sch->gso_skb) {
+               sch->gso_skb = sch->dequeue(sch);
+               if (sch->gso_skb)
+                       /* it's still part of the queue */
+                       sch->q.qlen++;
+       }
 
-       return NET_XMIT_SUCCESS;
+       return sch->gso_skb;
 }
 
-static inline int qdisc_requeue(struct sk_buff *skb, struct Qdisc *sch)
+/* use instead of qdisc->dequeue() for all qdiscs queried with ->peek() */
+static inline struct sk_buff *qdisc_dequeue_peeked(struct Qdisc *sch)
 {
-       return __qdisc_requeue(skb, sch, &sch->q);
+       struct sk_buff *skb = sch->gso_skb;
+
+       if (skb) {
+               sch->gso_skb = NULL;
+               sch->q.qlen--;
+       } else {
+               skb = sch->dequeue(sch);
+       }
+
+       return skb;
 }
 
 static inline void __qdisc_reset_queue(struct Qdisc *sch,