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-rw-r--r--net/sched/sch_api.c175
-rw-r--r--net/sched/sch_generic.c10
2 files changed, 133 insertions, 52 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index b3ef8307204e..fb43731c9860 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -185,11 +185,20 @@ EXPORT_SYMBOL(unregister_qdisc);
struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
{
- struct Qdisc *q;
+ unsigned int i;
+
+ for (i = 0; i < dev->num_tx_queues; i++) {
+ struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
+ struct Qdisc *q, *txq_root = txq->qdisc;
- list_for_each_entry(q, &dev->qdisc_list, list) {
- if (q->handle == handle)
- return q;
+ 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;
+ }
}
return NULL;
}
@@ -676,9 +685,8 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
goto err_out3;
}
}
- spin_lock_bh(&dev->qdisc_list_lock);
- list_add_tail(&sch->list, &dev->qdisc_list);
- spin_unlock_bh(&dev->qdisc_list_lock);
+ if (parent)
+ list_add_tail(&sch->list, &dev_queue->qdisc->list);
return sch;
}
@@ -1037,13 +1045,57 @@ err_out:
return -EINVAL;
}
+static bool tc_qdisc_dump_ignore(struct Qdisc *q)
+{
+ return (q->flags & TCQ_F_BUILTIN) ? true : false;
+}
+
+static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
+ struct netlink_callback *cb,
+ int *q_idx_p, int s_q_idx)
+{
+ int ret = 0, q_idx = *q_idx_p;
+ struct Qdisc *q;
+
+ if (!root)
+ return 0;
+
+ q = root;
+ if (q_idx < s_q_idx) {
+ q_idx++;
+ } else {
+ if (!tc_qdisc_dump_ignore(q) &&
+ tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
+ goto done;
+ q_idx++;
+ }
+ list_for_each_entry(q, &root->list, list) {
+ if (q_idx < s_q_idx) {
+ q_idx++;
+ continue;
+ }
+ if (!tc_qdisc_dump_ignore(q) &&
+ tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
+ goto done;
+ q_idx++;
+ }
+
+out:
+ *q_idx_p = q_idx;
+ return ret;
+done:
+ ret = -1;
+ goto out;
+}
+
static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
int idx, q_idx;
int s_idx, s_q_idx;
struct net_device *dev;
- struct Qdisc *q;
if (net != &init_net)
return 0;
@@ -1053,21 +1105,22 @@ static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb)
read_lock(&dev_base_lock);
idx = 0;
for_each_netdev(&init_net, dev) {
+ struct netdev_queue *dev_queue;
+
if (idx < s_idx)
goto cont;
if (idx > s_idx)
s_q_idx = 0;
q_idx = 0;
- list_for_each_entry(q, &dev->qdisc_list, list) {
- if (q_idx < s_q_idx) {
- q_idx++;
- continue;
- }
- if (tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
- goto done;
- q_idx++;
- }
+
+ dev_queue = netdev_get_tx_queue(dev, 0);
+ if (tc_dump_qdisc_root(dev_queue->qdisc, skb, cb, &q_idx, s_q_idx) < 0)
+ goto done;
+
+ dev_queue = &dev->rx_queue;
+ if (tc_dump_qdisc_root(dev_queue->qdisc, skb, cb, &q_idx, s_q_idx) < 0)
+ goto done;
+
cont:
idx++;
}
@@ -1285,15 +1338,62 @@ static int qdisc_class_dump(struct Qdisc *q, unsigned long cl, struct qdisc_walk
a->cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWTCLASS);
}
+static int tc_dump_tclass_qdisc(struct Qdisc *q, struct sk_buff *skb,
+ struct tcmsg *tcm, struct netlink_callback *cb,
+ int *t_p, int s_t)
+{
+ struct qdisc_dump_args arg;
+
+ if (tc_qdisc_dump_ignore(q) ||
+ *t_p < s_t || !q->ops->cl_ops ||
+ (tcm->tcm_parent &&
+ TC_H_MAJ(tcm->tcm_parent) != q->handle)) {
+ (*t_p)++;
+ return 0;
+ }
+ if (*t_p > s_t)
+ memset(&cb->args[1], 0, sizeof(cb->args)-sizeof(cb->args[0]));
+ arg.w.fn = qdisc_class_dump;
+ arg.skb = skb;
+ arg.cb = cb;
+ arg.w.stop = 0;
+ arg.w.skip = cb->args[1];
+ arg.w.count = 0;
+ q->ops->cl_ops->walk(q, &arg.w);
+ cb->args[1] = arg.w.count;
+ if (arg.w.stop)
+ return -1;
+ (*t_p)++;
+ return 0;
+}
+
+static int tc_dump_tclass_root(struct Qdisc *root, struct sk_buff *skb,
+ struct tcmsg *tcm, struct netlink_callback *cb,
+ int *t_p, int s_t)
+{
+ struct Qdisc *q;
+
+ if (!root)
+ return 0;
+
+ if (tc_dump_tclass_qdisc(root, skb, tcm, cb, t_p, s_t) < 0)
+ return -1;
+
+ list_for_each_entry(q, &root->list, list) {
+ if (tc_dump_tclass_qdisc(q, skb, tcm, cb, t_p, s_t) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct tcmsg *tcm = (struct tcmsg*)NLMSG_DATA(cb->nlh);
struct net *net = sock_net(skb->sk);
- int t;
- int s_t;
+ struct netdev_queue *dev_queue;
struct net_device *dev;
- struct Qdisc *q;
- struct tcmsg *tcm = (struct tcmsg*)NLMSG_DATA(cb->nlh);
- struct qdisc_dump_args arg;
+ int t, s_t;
if (net != &init_net)
return 0;
@@ -1306,28 +1406,15 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
s_t = cb->args[0];
t = 0;
- list_for_each_entry(q, &dev->qdisc_list, list) {
- if (t < s_t || !q->ops->cl_ops ||
- (tcm->tcm_parent &&
- TC_H_MAJ(tcm->tcm_parent) != q->handle)) {
- t++;
- continue;
- }
- if (t > s_t)
- memset(&cb->args[1], 0, sizeof(cb->args)-sizeof(cb->args[0]));
- arg.w.fn = qdisc_class_dump;
- arg.skb = skb;
- arg.cb = cb;
- arg.w.stop = 0;
- arg.w.skip = cb->args[1];
- arg.w.count = 0;
- q->ops->cl_ops->walk(q, &arg.w);
- cb->args[1] = arg.w.count;
- if (arg.w.stop)
- break;
- t++;
- }
+ dev_queue = netdev_get_tx_queue(dev, 0);
+ if (tc_dump_tclass_root(dev_queue->qdisc, 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)
+ goto done;
+done:
cb->args[0] = t;
dev_put(dev);
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index e244c462e6bd..14cc443d0490 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -480,15 +480,12 @@ static void __qdisc_destroy(struct rcu_head *head)
void qdisc_destroy(struct Qdisc *qdisc)
{
- struct net_device *dev = qdisc_dev(qdisc);
-
if (qdisc->flags & TCQ_F_BUILTIN ||
!atomic_dec_and_test(&qdisc->refcnt))
return;
- spin_lock_bh(&dev->qdisc_list_lock);
- list_del(&qdisc->list);
- spin_unlock_bh(&dev->qdisc_list_lock);
+ if (qdisc->parent)
+ list_del(&qdisc->list);
call_rcu(&qdisc->q_rcu, __qdisc_destroy);
}
@@ -520,9 +517,6 @@ static void attach_one_default_qdisc(struct net_device *dev,
printk(KERN_INFO "%s: activation failed\n", dev->name);
return;
}
- spin_lock_bh(&dev->qdisc_list_lock);
- list_add_tail(&qdisc->list, &dev->qdisc_list);
- spin_unlock_bh(&dev->qdisc_list_lock);
} else {
qdisc = &noqueue_qdisc;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 06:32:06 +0100