[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/net/sched/cls_cgroup.c b/src/kernel/linux/v4.14/net/sched/cls_cgroup.c
new file mode 100644
index 0000000..309d589
--- /dev/null
+++ b/src/kernel/linux/v4.14/net/sched/cls_cgroup.c
@@ -0,0 +1,230 @@
+/*
+ * net/sched/cls_cgroup.c Control Group Classifier
+ *
+ * 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.
+ *
+ * Authors: Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/rcupdate.h>
+#include <net/rtnetlink.h>
+#include <net/pkt_cls.h>
+#include <net/sock.h>
+#include <net/cls_cgroup.h>
+
+struct cls_cgroup_head {
+ u32 handle;
+ struct tcf_exts exts;
+ struct tcf_ematch_tree ematches;
+ struct tcf_proto *tp;
+ union {
+ struct work_struct work;
+ struct rcu_head rcu;
+ };
+};
+
+static int cls_cgroup_classify(struct sk_buff *skb, const struct tcf_proto *tp,
+ struct tcf_result *res)
+{
+ struct cls_cgroup_head *head = rcu_dereference_bh(tp->root);
+ u32 classid = task_get_classid(skb);
+
+ if (!classid)
+ return -1;
+ if (!tcf_em_tree_match(skb, &head->ematches, NULL))
+ return -1;
+
+ res->classid = classid;
+ res->class = 0;
+
+ return tcf_exts_exec(skb, &head->exts, res);
+}
+
+static void *cls_cgroup_get(struct tcf_proto *tp, u32 handle)
+{
+ return NULL;
+}
+
+static int cls_cgroup_init(struct tcf_proto *tp)
+{
+ return 0;
+}
+
+static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
+ [TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED },
+};
+
+static void __cls_cgroup_destroy(struct cls_cgroup_head *head)
+{
+ tcf_exts_destroy(&head->exts);
+ tcf_em_tree_destroy(&head->ematches);
+ tcf_exts_put_net(&head->exts);
+ kfree(head);
+}
+
+static void cls_cgroup_destroy_work(struct work_struct *work)
+{
+ struct cls_cgroup_head *head = container_of(work,
+ struct cls_cgroup_head,
+ work);
+ rtnl_lock();
+ __cls_cgroup_destroy(head);
+ rtnl_unlock();
+}
+
+static void cls_cgroup_destroy_rcu(struct rcu_head *root)
+{
+ struct cls_cgroup_head *head = container_of(root,
+ struct cls_cgroup_head,
+ rcu);
+
+ INIT_WORK(&head->work, cls_cgroup_destroy_work);
+ tcf_queue_work(&head->work);
+}
+
+static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
+ struct tcf_proto *tp, unsigned long base,
+ u32 handle, struct nlattr **tca,
+ void **arg, bool ovr)
+{
+ struct nlattr *tb[TCA_CGROUP_MAX + 1];
+ struct cls_cgroup_head *head = rtnl_dereference(tp->root);
+ struct cls_cgroup_head *new;
+ int err;
+
+ if (!tca[TCA_OPTIONS])
+ return -EINVAL;
+
+ if (!head && !handle)
+ return -EINVAL;
+
+ if (head && handle != head->handle)
+ return -ENOENT;
+
+ new = kzalloc(sizeof(*head), GFP_KERNEL);
+ if (!new)
+ return -ENOBUFS;
+
+ err = tcf_exts_init(&new->exts, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
+ if (err < 0)
+ goto errout;
+ new->handle = handle;
+ new->tp = tp;
+ err = nla_parse_nested(tb, TCA_CGROUP_MAX, tca[TCA_OPTIONS],
+ cgroup_policy, NULL);
+ if (err < 0)
+ goto errout;
+
+ err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &new->exts, ovr);
+ if (err < 0)
+ goto errout;
+
+ err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &new->ematches);
+ if (err < 0)
+ goto errout;
+
+ rcu_assign_pointer(tp->root, new);
+ if (head) {
+ tcf_exts_get_net(&head->exts);
+ call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+ }
+ return 0;
+errout:
+ tcf_exts_destroy(&new->exts);
+ kfree(new);
+ return err;
+}
+
+static void cls_cgroup_destroy(struct tcf_proto *tp)
+{
+ struct cls_cgroup_head *head = rtnl_dereference(tp->root);
+
+ /* Head can still be NULL due to cls_cgroup_init(). */
+ if (head) {
+ if (tcf_exts_get_net(&head->exts))
+ call_rcu(&head->rcu, cls_cgroup_destroy_rcu);
+ else
+ __cls_cgroup_destroy(head);
+ }
+}
+
+static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last)
+{
+ return -EOPNOTSUPP;
+}
+
+static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg)
+{
+ struct cls_cgroup_head *head = rtnl_dereference(tp->root);
+
+ if (arg->count < arg->skip)
+ goto skip;
+
+ if (arg->fn(tp, head, arg) < 0) {
+ arg->stop = 1;
+ return;
+ }
+skip:
+ arg->count++;
+}
+
+static int cls_cgroup_dump(struct net *net, struct tcf_proto *tp, void *fh,
+ struct sk_buff *skb, struct tcmsg *t)
+{
+ struct cls_cgroup_head *head = rtnl_dereference(tp->root);
+ struct nlattr *nest;
+
+ t->tcm_handle = head->handle;
+
+ nest = nla_nest_start(skb, TCA_OPTIONS);
+ if (nest == NULL)
+ goto nla_put_failure;
+
+ 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) < 0)
+ goto nla_put_failure;
+
+ return skb->len;
+
+nla_put_failure:
+ nla_nest_cancel(skb, nest);
+ return -1;
+}
+
+static struct tcf_proto_ops cls_cgroup_ops __read_mostly = {
+ .kind = "cgroup",
+ .init = cls_cgroup_init,
+ .change = cls_cgroup_change,
+ .classify = cls_cgroup_classify,
+ .destroy = cls_cgroup_destroy,
+ .get = cls_cgroup_get,
+ .delete = cls_cgroup_delete,
+ .walk = cls_cgroup_walk,
+ .dump = cls_cgroup_dump,
+ .owner = THIS_MODULE,
+};
+
+static int __init init_cgroup_cls(void)
+{
+ return register_tcf_proto_ops(&cls_cgroup_ops);
+}
+
+static void __exit exit_cgroup_cls(void)
+{
+ unregister_tcf_proto_ops(&cls_cgroup_ops);
+}
+
+module_init(init_cgroup_cls);
+module_exit(exit_cgroup_cls);
+MODULE_LICENSE("GPL");