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authorJohn W. Linville <linville@tuxdriver.com>2010-07-27 11:59:19 -0400
committerJohn W. Linville <linville@tuxdriver.com>2010-07-27 11:59:19 -0400
commit800f65bba8d2030b3fef62850e203f9f176625a8 (patch)
tree6507c4fe7a0826c253b4afb29375ab306a0fd9c8 /include/net/cls_cgroup.h
parent06b3cda0c12986f5bba578b918b188d731c4e191 (diff)
parentb3190df628617c7a4f188a9465aeabe1f5761933 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6
Conflicts: drivers/net/wireless/iwlwifi/iwl-commands.h
Diffstat (limited to 'include/net/cls_cgroup.h')
-rw-r--r--include/net/cls_cgroup.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
new file mode 100644
index 000000000000..726cc3536409
--- /dev/null
+++ b/include/net/cls_cgroup.h
@@ -0,0 +1,63 @@
+/*
+ * cls_cgroup.h Control Group Classifier
+ *
+ * Authors: Thomas Graf <tgraf@suug.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#ifndef _NET_CLS_CGROUP_H
+#define _NET_CLS_CGROUP_H
+
+#include <linux/cgroup.h>
+#include <linux/hardirq.h>
+#include <linux/rcupdate.h>
+
+#ifdef CONFIG_CGROUPS
+struct cgroup_cls_state
+{
+ struct cgroup_subsys_state css;
+ u32 classid;
+};
+
+#ifdef CONFIG_NET_CLS_CGROUP
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+ if (in_interrupt())
+ return 0;
+
+ return container_of(task_subsys_state(p, net_cls_subsys_id),
+ struct cgroup_cls_state, css)->classid;
+}
+#else
+extern int net_cls_subsys_id;
+
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+ int id;
+ u32 classid = 0;
+
+ if (in_interrupt())
+ return 0;
+
+ rcu_read_lock();
+ id = rcu_dereference(net_cls_subsys_id);
+ if (id >= 0)
+ classid = container_of(task_subsys_state(p, id),
+ struct cgroup_cls_state, css)->classid;
+ rcu_read_unlock();
+
+ return classid;
+}
+#endif
+#else
+static inline u32 task_cls_classid(struct task_struct *p)
+{
+ return 0;
+}
+#endif
+#endif /* _NET_CLS_CGROUP_H */