ipv6: syncookies: free reqsk on xfrm_lookup error

[linux-2.6] / net / sched / sch_netem.c

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index c9c649b26eaa1d943b404ccbd4aea3be98fa661d..a590857006786dc7d98bac27230f79dbd2cc552c 100644 (file)
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -82,6 +82,13 @@ struct netem_skb_cb {
        psched_time_t   time_to_send;
 };
 
+static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
+{
+       BUILD_BUG_ON(sizeof(skb->cb) <
+               sizeof(struct qdisc_skb_cb) + sizeof(struct netem_skb_cb));
+       return (struct netem_skb_cb *)qdisc_skb_cb(skb)->data;
+}
+
 /* init_crandom - initialize correlated random number generator
  * Use entropy source for initial seed.
  */
@@ -180,11 +187,11 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
         * skb will be queued.
         */
        if (count > 1 && (skb2 = skb_clone(skb, GFP_ATOMIC)) != NULL) {
-               struct Qdisc *rootq = sch->dev->qdisc;
+               struct Qdisc *rootq = qdisc_root(sch);
                u32 dupsave = q->duplicate; /* prevent duplicating a dup... */
                q->duplicate = 0;
 
-               rootq->enqueue(skb2, rootq);
+               qdisc_enqueue_root(skb2, rootq);
                q->duplicate = dupsave;
        }
 
@@ -205,7 +212,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
                skb->data[net_random() % skb_headlen(skb)] ^= 1<<(net_random() % 8);
        }
 
-       cb = (struct netem_skb_cb *)skb->cb;
+       cb = netem_skb_cb(skb);
        if (q->gap == 0                 /* not doing reordering */
            || q->counter < q->gap      /* inside last reordering gap */
            || q->reorder < get_crandom(&q->reorder_cor)) {
@@ -218,7 +225,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
                now = psched_get_time();
                cb->time_to_send = now + delay;
                ++q->counter;
-               ret = q->qdisc->enqueue(skb, q->qdisc);
+               ret = qdisc_enqueue(skb, q->qdisc);
        } else {
                /*
                 * Do re-ordering by putting one out of N packets at the front
@@ -231,7 +238,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 
        if (likely(ret == NET_XMIT_SUCCESS)) {
                sch->q.qlen++;
-               sch->bstats.bytes += skb->len;
+               sch->bstats.bytes += qdisc_pkt_len(skb);
                sch->bstats.packets++;
        } else
                sch->qstats.drops++;
@@ -277,8 +284,7 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 
        skb = q->qdisc->dequeue(q->qdisc);
        if (skb) {
-               const struct netem_skb_cb *cb
-                       = (const struct netem_skb_cb *)skb->cb;
+               const struct netem_skb_cb *cb = netem_skb_cb(skb);
                psched_time_t now = psched_get_time();
 
                /* if more time remaining? */
@@ -310,28 +316,6 @@ static void netem_reset(struct Qdisc *sch)
        qdisc_watchdog_cancel(&q->watchdog);
 }
 
-/* Pass size change message down to embedded FIFO */
-static int set_fifo_limit(struct Qdisc *q, int limit)
-{
-       struct nlattr *nla;
-       int ret = -ENOMEM;
-
-       /* Hack to avoid sending change message to non-FIFO */
-       if (strncmp(q->ops->id + 1, "fifo", 4) != 0)
-               return 0;
-
-       nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL);
-       if (nla) {
-               nla->nla_type = RTM_NEWQDISC;
-               nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
-               ((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
-
-               ret = q->ops->change(q, nla);
-               kfree(nla);
-       }
-       return ret;
-}
-
 /*
  * Distribution data is a variable size payload containing
  * signed 16 bit values.
@@ -341,6 +325,7 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
        struct netem_sched_data *q = qdisc_priv(sch);
        unsigned long n = nla_len(attr)/sizeof(__s16);
        const __s16 *data = nla_data(attr);
+       spinlock_t *root_lock;
        struct disttable *d;
        int i;
 
@@ -355,9 +340,11 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
        for (i = 0; i < n; i++)
                d->table[i] = data[i];
 
-       spin_lock_bh(&sch->dev->queue_lock);
+       root_lock = qdisc_root_lock(sch);
+
+       spin_lock_bh(root_lock);
        d = xchg(&q->delay_dist, d);
-       spin_unlock_bh(&sch->dev->queue_lock);
+       spin_unlock_bh(root_lock);
 
        kfree(d);
        return 0;
@@ -416,7 +403,7 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt)
        if (ret < 0)
                return ret;
 
-       ret = set_fifo_limit(q->qdisc, qopt->limit);
+       ret = fifo_set_limit(q->qdisc, qopt->limit);
        if (ret) {
                pr_debug("netem: can't set fifo limit\n");
                return ret;
@@ -476,7 +463,7 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
 {
        struct fifo_sched_data *q = qdisc_priv(sch);
        struct sk_buff_head *list = &sch->q;
-       psched_time_t tnext = ((struct netem_skb_cb *)nskb->cb)->time_to_send;
+       psched_time_t tnext = netem_skb_cb(nskb)->time_to_send;
        struct sk_buff *skb;
 
        if (likely(skb_queue_len(list) < q->limit)) {
@@ -487,8 +474,7 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
                }
 
                skb_queue_reverse_walk(list, skb) {
-                       const struct netem_skb_cb *cb
-                               = (const struct netem_skb_cb *)skb->cb;
+                       const struct netem_skb_cb *cb = netem_skb_cb(skb);
 
                        if (tnext >= cb->time_to_send)
                                break;
@@ -496,8 +482,8 @@ static int tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
 
                __skb_queue_after(list, skb, nskb);
 
-               sch->qstats.backlog += nskb->len;
-               sch->bstats.bytes += nskb->len;
+               sch->qstats.backlog += qdisc_pkt_len(nskb);
+               sch->bstats.bytes += qdisc_pkt_len(nskb);
                sch->bstats.packets++;
 
                return NET_XMIT_SUCCESS;
@@ -517,7 +503,7 @@ static int tfifo_init(struct Qdisc *sch, struct nlattr *opt)
 
                q->limit = ctl->limit;
        } else
-               q->limit = max_t(u32, sch->dev->tx_queue_len, 1);
+               q->limit = max_t(u32, qdisc_dev(sch)->tx_queue_len, 1);
 
        q->oldest = PSCHED_PASTPERFECT;
        return 0;
@@ -558,7 +544,8 @@ static int netem_init(struct Qdisc *sch, struct nlattr *opt)
 
        qdisc_watchdog_init(&q->watchdog, sch);
 
-       q->qdisc = qdisc_create_dflt(sch->dev, &tfifo_qdisc_ops,
+       q->qdisc = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+                                    &tfifo_qdisc_ops,
                                     TC_H_MAKE(sch->handle, 1));
        if (!q->qdisc) {
                pr_debug("netem: qdisc create failed\n");