#include <linux/list.h>
#include <linux/hrtimer.h>
#include <linux/lockdep.h>
+#include <linux/slab.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>
-static int qdisc_notify(struct sk_buff *oskb, struct nlmsghdr *n, u32 clid,
+static int qdisc_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, u32 clid,
struct Qdisc *old, struct Qdisc *new);
-static int tclass_notify(struct sk_buff *oskb, struct nlmsghdr *n,
- struct Qdisc *q, unsigned long cl, int event);
+static int tclass_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, struct Qdisc *q,
+ unsigned long cl, int event);
/*
}
EXPORT_SYMBOL(qdisc_tree_decrease_qlen);
-static void notify_and_destroy(struct sk_buff *skb, struct nlmsghdr *n, u32 clid,
+static void notify_and_destroy(struct net *net, struct sk_buff *skb,
+ struct nlmsghdr *n, u32 clid,
struct Qdisc *old, struct Qdisc *new)
{
if (new || old)
- qdisc_notify(skb, n, clid, old, new);
+ qdisc_notify(net, skb, n, clid, old, new);
if (old)
qdisc_destroy(old);
struct Qdisc *new, struct Qdisc *old)
{
struct Qdisc *q = old;
+ struct net *net = dev_net(dev);
int err = 0;
if (parent == NULL) {
if (new && i > 0)
atomic_inc(&new->refcnt);
- qdisc_destroy(old);
+ if (!ingress)
+ qdisc_destroy(old);
}
- notify_and_destroy(skb, n, classid, dev->qdisc, new);
- if (new && !new->ops->attach)
- atomic_inc(&new->refcnt);
- dev->qdisc = new ? : &noop_qdisc;
+ if (!ingress) {
+ notify_and_destroy(net, skb, n, classid,
+ dev->qdisc, new);
+ if (new && !new->ops->attach)
+ atomic_inc(&new->refcnt);
+ dev->qdisc = new ? : &noop_qdisc;
+ } else {
+ notify_and_destroy(net, skb, n, classid, old, new);
+ }
if (dev->flags & IFF_UP)
dev_activate(dev);
err = -ENOENT;
}
if (!err)
- notify_and_destroy(skb, n, classid, old, new);
+ notify_and_destroy(net, skb, n, classid, old, new);
}
return err;
}
static struct Qdisc *
qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
- u32 parent, u32 handle, struct nlattr **tca, int *errp)
+ struct Qdisc *p, u32 parent, u32 handle,
+ struct nlattr **tca, int *errp)
{
int err;
struct nlattr *kind = tca[TCA_KIND];
stab = qdisc_get_stab(tca[TCA_STAB]);
if (IS_ERR(stab)) {
err = PTR_ERR(stab);
- goto err_out3;
+ goto err_out4;
}
sch->stab = stab;
}
if (tca[TCA_RATE]) {
spinlock_t *root_lock;
+ err = -EOPNOTSUPP;
+ if (sch->flags & TCQ_F_MQROOT)
+ goto err_out4;
+
if ((sch->parent != TC_H_ROOT) &&
- !(sch->flags & TCQ_F_INGRESS))
+ !(sch->flags & TCQ_F_INGRESS) &&
+ (!p || !(p->flags & TCQ_F_MQROOT)))
root_lock = qdisc_root_sleeping_lock(sch);
else
root_lock = qdisc_lock(sch);
err = gen_new_estimator(&sch->bstats, &sch->rate_est,
root_lock, tca[TCA_RATE]);
- if (err) {
- /*
- * Any broken qdiscs that would require
- * a ops->reset() here? The qdisc was never
- * in action so it shouldn't be necessary.
- */
- if (ops->destroy)
- ops->destroy(sch);
- goto err_out3;
- }
+ if (err)
+ goto err_out4;
}
qdisc_list_add(sch);
return sch;
}
err_out3:
- qdisc_put_stab(sch->stab);
dev_put(dev);
kfree((char *) sch - sch->padded);
err_out2:
err_out:
*errp = err;
return NULL;
+
+err_out4:
+ /*
+ * Any broken qdiscs that would require a ops->reset() here?
+ * The qdisc was never in action so it shouldn't be necessary.
+ */
+ qdisc_put_stab(sch->stab);
+ if (ops->destroy)
+ ops->destroy(sch);
+ goto err_out3;
}
static int qdisc_change(struct Qdisc *sch, struct nlattr **tca)
qdisc_put_stab(sch->stab);
sch->stab = stab;
- if (tca[TCA_RATE])
+ if (tca[TCA_RATE]) {
/* NB: ignores errors from replace_estimator
because change can't be undone. */
+ if (sch->flags & TCQ_F_MQROOT)
+ goto out;
gen_replace_estimator(&sch->bstats, &sch->rate_est,
qdisc_root_sleeping_lock(sch),
tca[TCA_RATE]);
-
+ }
+out:
return 0;
}
struct Qdisc *p = NULL;
int err;
- if (net != &init_net)
- return -EINVAL;
-
- if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
if ((err = qdisc_graft(dev, p, skb, n, clid, NULL, q)) != 0)
return err;
} else {
- qdisc_notify(skb, n, clid, NULL, q);
+ qdisc_notify(net, skb, n, clid, NULL, q);
}
return 0;
}
struct Qdisc *q, *p;
int err;
- if (net != &init_net)
- return -EINVAL;
-
replay:
/* Reinit, just in case something touches this. */
tcm = NLMSG_DATA(n);
clid = tcm->tcm_parent;
q = p = NULL;
- if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
return -EINVAL;
err = qdisc_change(q, tca);
if (err == 0)
- qdisc_notify(skb, n, clid, NULL, q);
+ qdisc_notify(net, skb, n, clid, NULL, q);
return err;
create_n_graft:
if (!(n->nlmsg_flags&NLM_F_CREATE))
return -ENOENT;
if (clid == TC_H_INGRESS)
- q = qdisc_create(dev, &dev->rx_queue,
+ q = qdisc_create(dev, &dev->rx_queue, p,
tcm->tcm_parent, tcm->tcm_parent,
tca, &err);
else {
- unsigned int ntx = 0;
+ struct netdev_queue *dev_queue;
if (p && p->ops->cl_ops && p->ops->cl_ops->select_queue)
- ntx = p->ops->cl_ops->select_queue(p, tcm);
+ dev_queue = p->ops->cl_ops->select_queue(p, tcm);
+ else if (p)
+ dev_queue = p->dev_queue;
+ else
+ dev_queue = netdev_get_tx_queue(dev, 0);
- q = qdisc_create(dev, netdev_get_tx_queue(dev, ntx),
+ q = qdisc_create(dev, dev_queue, p,
tcm->tcm_parent, tcm->tcm_handle,
tca, &err);
}
goto nla_put_failure;
if (gnet_stats_copy_basic(&d, &q->bstats) < 0 ||
- gnet_stats_copy_rate_est(&d, &q->rate_est) < 0 ||
+ gnet_stats_copy_rate_est(&d, &q->bstats, &q->rate_est) < 0 ||
gnet_stats_copy_queue(&d, &q->qstats) < 0)
goto nla_put_failure;
return -1;
}
-static int qdisc_notify(struct sk_buff *oskb, struct nlmsghdr *n,
- u32 clid, struct Qdisc *old, struct Qdisc *new)
+static int qdisc_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, u32 clid,
+ struct Qdisc *old, struct Qdisc *new)
{
struct sk_buff *skb;
u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
}
if (skb->len)
- return rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
+ return rtnetlink_send(skb, net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
err_out:
kfree_skb(skb);
int s_idx, s_q_idx;
struct net_device *dev;
- if (net != &init_net)
- return 0;
-
s_idx = cb->args[0];
s_q_idx = q_idx = cb->args[1];
- read_lock(&dev_base_lock);
+
+ rcu_read_lock();
idx = 0;
- for_each_netdev(&init_net, dev) {
+ for_each_netdev_rcu(net, dev) {
struct netdev_queue *dev_queue;
if (idx < s_idx)
}
done:
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
cb->args[0] = idx;
cb->args[1] = q_idx;
u32 qid = TC_H_MAJ(clid);
int err;
- if (net != &init_net)
- return -EINVAL;
-
- if ((dev = __dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
+ if ((dev = __dev_get_by_index(net, tcm->tcm_ifindex)) == NULL)
return -ENODEV;
err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL);
if (cops->delete)
err = cops->delete(q, cl);
if (err == 0)
- tclass_notify(skb, n, q, cl, RTM_DELTCLASS);
+ tclass_notify(net, skb, n, q, cl, RTM_DELTCLASS);
goto out;
case RTM_GETTCLASS:
- err = tclass_notify(skb, n, q, cl, RTM_NEWTCLASS);
+ err = tclass_notify(net, skb, n, q, cl, RTM_NEWTCLASS);
goto out;
default:
err = -EINVAL;
if (cops->change)
err = cops->change(q, clid, pid, tca, &new_cl);
if (err == 0)
- tclass_notify(skb, n, q, new_cl, RTM_NEWTCLASS);
+ tclass_notify(net, skb, n, q, new_cl, RTM_NEWTCLASS);
out:
if (cl)
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*tcm), flags);
tcm = NLMSG_DATA(nlh);
tcm->tcm_family = AF_UNSPEC;
+ tcm->tcm__pad1 = 0;
+ tcm->tcm__pad2 = 0;
tcm->tcm_ifindex = qdisc_dev(q)->ifindex;
tcm->tcm_parent = q->handle;
tcm->tcm_handle = q->handle;
return -1;
}
-static int tclass_notify(struct sk_buff *oskb, struct nlmsghdr *n,
- struct Qdisc *q, unsigned long cl, int event)
+static int tclass_notify(struct net *net, struct sk_buff *oskb,
+ struct nlmsghdr *n, struct Qdisc *q,
+ unsigned long cl, int event)
{
struct sk_buff *skb;
u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
return -EINVAL;
}
- return rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
+ return rtnetlink_send(skb, net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
}
struct qdisc_dump_args
struct net_device *dev;
int t, s_t;
- if (net != &init_net)
- return 0;
-
if (cb->nlh->nlmsg_len < NLMSG_LENGTH(sizeof(*tcm)))
return 0;
- if ((dev = dev_get_by_index(&init_net, tcm->tcm_ifindex)) == NULL)
+ if ((dev = dev_get_by_index(net, tcm->tcm_ifindex)) == NULL)
return 0;
s_t = cb->args[0];
tp = otp;
if (verd++ >= MAX_REC_LOOP) {
- printk("rule prio %u protocol %02x reclassify loop, "
- "packet dropped\n",
- tp->prio&0xffff, ntohs(tp->protocol));
+ if (net_ratelimit())
+ printk(KERN_NOTICE
+ "%s: packet reclassify loop"
+ " rule prio %u protocol %02x\n",
+ tp->q->ops->id,
+ tp->prio & 0xffff, ntohs(tp->protocol));
return TC_ACT_SHOT;
}
skb->tc_verd = SET_TC_VERD(skb->tc_verd, verd);
static int psched_open(struct inode *inode, struct file *file)
{
- return single_open(file, psched_show, PDE(inode)->data);
+ return single_open(file, psched_show, NULL);
}
static const struct file_operations psched_fops = {
.llseek = seq_lseek,
.release = single_release,
};
+
+static int __net_init psched_net_init(struct net *net)
+{
+ struct proc_dir_entry *e;
+
+ e = proc_net_fops_create(net, "psched", 0, &psched_fops);
+ if (e == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void __net_exit psched_net_exit(struct net *net)
+{
+ proc_net_remove(net, "psched");
+}
+#else
+static int __net_init psched_net_init(struct net *net)
+{
+ return 0;
+}
+
+static void __net_exit psched_net_exit(struct net *net)
+{
+}
#endif
+static struct pernet_operations psched_net_ops = {
+ .init = psched_net_init,
+ .exit = psched_net_exit,
+};
+
static int __init pktsched_init(void)
{
+ int err;
+
+ err = register_pernet_subsys(&psched_net_ops);
+ if (err) {
+ printk(KERN_ERR "pktsched_init: "
+ "cannot initialize per netns operations\n");
+ return err;
+ }
+
register_qdisc(&pfifo_qdisc_ops);
register_qdisc(&bfifo_qdisc_ops);
+ register_qdisc(&pfifo_head_drop_qdisc_ops);
register_qdisc(&mq_qdisc_ops);
- proc_net_fops_create(&init_net, "psched", 0, &psched_fops);
rtnl_register(PF_UNSPEC, RTM_NEWQDISC, tc_modify_qdisc, NULL);
rtnl_register(PF_UNSPEC, RTM_DELQDISC, tc_get_qdisc, NULL);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff