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authorPatrick McHardy <kaber@trash.net>2009-09-04 06:41:18 +0000
committerDavid S. Miller <davem@davemloft.net>2009-09-06 02:07:03 -0700
commitaf356afa010f3cd2c8b8fcc3bce90f7a7b7ec02a (patch)
tree302d938363bbaec3e69a58e36dbf8a304b24144c /net/sched/cls_api.c
parent5b9a9ccfad8553dbf7a9b17ba78bad70215ed0e2 (diff)
downloadlinux-af356afa010f3cd2c8b8fcc3bce90f7a7b7ec02a.tar.bz2
net_sched: reintroduce dev->qdisc for use by sch_api
Currently the multiqueue integration with the qdisc API suffers from a few problems: - with multiple queues, all root qdiscs use the same handle. This means they can't be exposed to userspace in a backwards compatible fashion. - all API operations always refer to queue number 0. Newly created qdiscs are automatically shared between all queues, its not possible to address individual queues or restore multiqueue behaviour once a shared qdisc has been attached. - Dumps only contain the root qdisc of queue 0, in case of non-shared qdiscs this means the statistics are incomplete. This patch reintroduces dev->qdisc, which points to the (single) root qdisc from userspace's point of view. Currently it either points to the first (non-shared) default qdisc, or a qdisc shared between all queues. The following patches will introduce a classful dummy qdisc, which will be used as root qdisc and contain the per-queue qdiscs as children. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_api.c')
-rw-r--r--net/sched/cls_api.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index bcfbdb4758c9..6a536949cdc0 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -168,8 +168,7 @@ replay:
/* Find qdisc */
if (!parent) {
- struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
- q = dev_queue->qdisc_sleeping;
+ q = dev->qdisc;
parent = q->handle;
} else {
q = qdisc_lookup(dev, TC_H_MAJ(t->tcm_parent));
@@ -408,7 +407,6 @@ static int tcf_node_dump(struct tcf_proto *tp, unsigned long n,
static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
- struct netdev_queue *dev_queue;
int t;
int s_t;
struct net_device *dev;
@@ -427,9 +425,8 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
if ((dev = dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
return skb->len;
- dev_queue = netdev_get_tx_queue(dev, 0);
if (!tcm->tcm_parent)
- q = dev_queue->qdisc_sleeping;
+ q = dev->qdisc;
else
q = qdisc_lookup(dev, TC_H_MAJ(tcm->tcm_parent));
if (!q)