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pkt_sched: Fix ingress deletion and filter attachment. 

Based upon bug reports by Stephen Hemminger.

We still had some cases using ->qdisc instead of ->qdisc_sleeping.

Also, qdisc_lookup() should return ingress qdiscs.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-08 23:23:39 -07:00
parent 76aab2c1ea
commit 8123b421e8
1 changed files with 23 additions and 13 deletions
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36
net/sched/sch_api.c
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@ -183,6 +183,21 @@ EXPORT_SYMBOL(unregister_qdisc);
(root qdisc, all its children, children of children etc.)
*/
struct Qdisc *qdisc_match_from_root(struct Qdisc *root, u32 handle)
{
struct Qdisc *q;
if (!(root->flags & TCQ_F_BUILTIN) &&
root->handle == handle)
return root;
list_for_each_entry(q, &root->list, list) {
if (q->handle == handle)
return q;
}
return NULL;
}
struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
{
unsigned int i;
@ -191,16 +206,11 @@ struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
struct Qdisc *q, *txq_root = txq->qdisc_sleeping;
if (!(txq_root->flags & TCQ_F_BUILTIN) &&
txq_root->handle == handle)
return txq_root;
list_for_each_entry(q, &txq_root->list, list) {
if (q->handle == handle)
return q;
}
q = qdisc_match_from_root(txq_root, handle);
if (q)
return q;
}
return NULL;
return qdisc_match_from_root(dev->rx_queue.qdisc_sleeping, handle);
}
static struct Qdisc *qdisc_leaf(struct Qdisc *p, u32 classid)
@ -908,7 +918,7 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
return -ENOENT;
q = qdisc_leaf(p, clid);
} else { /* ingress */
q = dev->rx_queue.qdisc;
q = dev->rx_queue.qdisc_sleeping;
}
} else {
struct netdev_queue *dev_queue;
@ -978,7 +988,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
return -ENOENT;
q = qdisc_leaf(p, clid);
} else { /*ingress */
q = dev->rx_queue.qdisc;
q = dev->rx_queue.qdisc_sleeping;
}
} else {
struct netdev_queue *dev_queue;
@ -1529,11 +1539,11 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
t = 0;
dev_queue = netdev_get_tx_queue(dev, 0);
if (tc_dump_tclass_root(dev_queue->qdisc, skb, tcm, cb, &t, s_t) < 0)
if (tc_dump_tclass_root(dev_queue->qdisc_sleeping, skb, tcm, cb, &t, s_t) < 0)
goto done;
dev_queue = &dev->rx_queue;
if (tc_dump_tclass_root(dev_queue->qdisc, skb, tcm, cb, &t, s_t) < 0)
if (tc_dump_tclass_root(dev_queue->qdisc_sleeping, skb, tcm, cb, &t, s_t) < 0)
goto done;
done: