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Diffstat (limited to 'net/sched/sch_api.c')
-rw-r--r--net/sched/sch_api.c113
1 files changed, 72 insertions, 41 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 6cd491013b50..9839b26674f4 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -28,16 +28,19 @@
#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);
/*
@@ -638,11 +641,12 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
}
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);
@@ -662,6 +666,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
struct Qdisc *new, struct Qdisc *old)
{
struct Qdisc *q = old;
+ struct net *net = dev_net(dev);
int err = 0;
if (parent == NULL) {
@@ -698,12 +703,13 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
}
if (!ingress) {
- notify_and_destroy(skb, n, classid, dev->qdisc, new);
+ 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(skb, n, classid, old, new);
+ notify_and_destroy(net, skb, n, classid, old, new);
}
if (dev->flags & IFF_UP)
@@ -721,7 +727,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
err = -ENOENT;
}
if (!err)
- notify_and_destroy(skb, n, classid, old, new);
+ notify_and_destroy(net, skb, n, classid, old, new);
}
return err;
}
@@ -947,10 +953,7 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
struct Qdisc *p = NULL;
int err;
- if (!net_eq(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);
@@ -990,7 +993,7 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
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;
}
@@ -1009,16 +1012,13 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
struct Qdisc *q, *p;
int err;
- if (!net_eq(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);
@@ -1105,7 +1105,7 @@ replay:
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:
@@ -1195,8 +1195,9 @@ 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;
@@ -1215,7 +1216,7 @@ static int qdisc_notify(struct sk_buff *oskb, struct nlmsghdr *n,
}
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);
@@ -1274,15 +1275,12 @@ static int tc_dump_qdisc(struct sk_buff *skb, struct netlink_callback *cb)
int s_idx, s_q_idx;
struct net_device *dev;
- if (!net_eq(net, &init_net))
- return 0;
-
s_idx = cb->args[0];
s_q_idx = q_idx = cb->args[1];
rcu_read_lock();
idx = 0;
- for_each_netdev_rcu(&init_net, dev) {
+ for_each_netdev_rcu(net, dev) {
struct netdev_queue *dev_queue;
if (idx < s_idx)
@@ -1334,10 +1332,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
u32 qid = TC_H_MAJ(clid);
int err;
- if (!net_eq(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);
@@ -1418,10 +1413,10 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
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;
@@ -1434,7 +1429,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
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)
@@ -1486,8 +1481,9 @@ nla_put_failure:
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;
@@ -1501,7 +1497,7 @@ static int tclass_notify(struct sk_buff *oskb, struct nlmsghdr *n,
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
@@ -1576,12 +1572,9 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
struct net_device *dev;
int t, s_t;
- if (!net_eq(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];
@@ -1691,7 +1684,7 @@ static int psched_show(struct seq_file *seq, void *v)
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 = {
@@ -1701,15 +1694,53 @@ 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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 15:06:02 +0100