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Diffstat (limited to 'net/sched/cls_cgroup.c')
-rw-r--r--net/sched/cls_cgroup.c127
1 files changed, 7 insertions, 120 deletions
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 16006c92c3fd..8e2158ab551c 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -11,109 +11,13 @@
#include <linux/module.h>
#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/errno.h>
#include <linux/skbuff.h>
-#include <linux/cgroup.h>
#include <linux/rcupdate.h>
-#include <linux/fdtable.h>
#include <net/rtnetlink.h>
#include <net/pkt_cls.h>
#include <net/sock.h>
#include <net/cls_cgroup.h>
-static inline struct cgroup_cls_state *css_cls_state(struct cgroup_subsys_state *css)
-{
- return css ? container_of(css, struct cgroup_cls_state, css) : NULL;
-}
-
-static inline struct cgroup_cls_state *task_cls_state(struct task_struct *p)
-{
- return css_cls_state(task_css(p, net_cls_subsys_id));
-}
-
-static struct cgroup_subsys_state *
-cgrp_css_alloc(struct cgroup_subsys_state *parent_css)
-{
- struct cgroup_cls_state *cs;
-
- cs = kzalloc(sizeof(*cs), GFP_KERNEL);
- if (!cs)
- return ERR_PTR(-ENOMEM);
- return &cs->css;
-}
-
-static int cgrp_css_online(struct cgroup_subsys_state *css)
-{
- struct cgroup_cls_state *cs = css_cls_state(css);
- struct cgroup_cls_state *parent = css_cls_state(css_parent(css));
-
- if (parent)
- cs->classid = parent->classid;
- return 0;
-}
-
-static void cgrp_css_free(struct cgroup_subsys_state *css)
-{
- kfree(css_cls_state(css));
-}
-
-static int update_classid(const void *v, struct file *file, unsigned n)
-{
- int err;
- struct socket *sock = sock_from_file(file, &err);
- if (sock)
- sock->sk->sk_classid = (u32)(unsigned long)v;
- return 0;
-}
-
-static void cgrp_attach(struct cgroup_subsys_state *css,
- struct cgroup_taskset *tset)
-{
- struct task_struct *p;
- struct cgroup_cls_state *cs = css_cls_state(css);
- void *v = (void *)(unsigned long)cs->classid;
-
- cgroup_taskset_for_each(p, css, tset) {
- task_lock(p);
- iterate_fd(p->files, 0, update_classid, v);
- task_unlock(p);
- }
-}
-
-static u64 read_classid(struct cgroup_subsys_state *css, struct cftype *cft)
-{
- return css_cls_state(css)->classid;
-}
-
-static int write_classid(struct cgroup_subsys_state *css, struct cftype *cft,
- u64 value)
-{
- css_cls_state(css)->classid = (u32) value;
- return 0;
-}
-
-static struct cftype ss_files[] = {
- {
- .name = "classid",
- .read_u64 = read_classid,
- .write_u64 = write_classid,
- },
- { } /* terminate */
-};
-
-struct cgroup_subsys net_cls_subsys = {
- .name = "net_cls",
- .css_alloc = cgrp_css_alloc,
- .css_online = cgrp_css_online,
- .css_free = cgrp_css_free,
- .attach = cgrp_attach,
- .subsys_id = net_cls_subsys_id,
- .base_cftypes = ss_files,
- .module = THIS_MODULE,
-};
-
struct cls_cgroup_head {
u32 handle;
struct tcf_exts exts;
@@ -172,11 +76,6 @@ static int cls_cgroup_init(struct tcf_proto *tp)
return 0;
}
-static const struct tcf_ext_map cgroup_ext_map = {
- .action = TCA_CGROUP_ACT,
- .police = TCA_CGROUP_POLICE,
-};
-
static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
[TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED },
};
@@ -203,6 +102,7 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (head == NULL)
return -ENOBUFS;
+ tcf_exts_init(&head->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
head->handle = handle;
tcf_tree_lock(tp);
@@ -218,8 +118,8 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
return err;
- err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e,
- &cgroup_ext_map);
+ tcf_exts_init(&e, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
+ err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e);
if (err < 0)
return err;
@@ -264,7 +164,7 @@ skip:
arg->count++;
}
-static int cls_cgroup_dump(struct tcf_proto *tp, unsigned long fh,
+static int cls_cgroup_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
struct sk_buff *skb, struct tcmsg *t)
{
struct cls_cgroup_head *head = tp->root;
@@ -277,13 +177,13 @@ static int cls_cgroup_dump(struct tcf_proto *tp, unsigned long fh,
if (nest == NULL)
goto nla_put_failure;
- if (tcf_exts_dump(skb, &head->exts, &cgroup_ext_map) < 0 ||
+ if (tcf_exts_dump(skb, &head->exts) < 0 ||
tcf_em_tree_dump(skb, &head->ematches, TCA_CGROUP_EMATCHES) < 0)
goto nla_put_failure;
nla_nest_end(skb, nest);
- if (tcf_exts_dump_stats(skb, &head->exts, &cgroup_ext_map) < 0)
+ if (tcf_exts_dump_stats(skb, &head->exts) < 0)
goto nla_put_failure;
return skb->len;
@@ -309,25 +209,12 @@ static struct tcf_proto_ops cls_cgroup_ops __read_mostly = {
static int __init init_cgroup_cls(void)
{
- int ret;
-
- ret = cgroup_load_subsys(&net_cls_subsys);
- if (ret)
- goto out;
-
- ret = register_tcf_proto_ops(&cls_cgroup_ops);
- if (ret)
- cgroup_unload_subsys(&net_cls_subsys);
-
-out:
- return ret;
+ return register_tcf_proto_ops(&cls_cgroup_ops);
}
static void __exit exit_cgroup_cls(void)
{
unregister_tcf_proto_ops(&cls_cgroup_ops);
-
- cgroup_unload_subsys(&net_cls_subsys);
}
module_init(init_cgroup_cls);