Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * net/sched/cls_cgroup.c	Control Group Classifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Authors:	Thomas Graf <tgraf@suug.ch>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <net/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <net/pkt_cls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <net/cls_cgroup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) struct cls_cgroup_head {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	u32			handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	struct tcf_exts		exts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	struct tcf_ematch_tree	ematches;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct tcf_proto	*tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	struct rcu_work		rwork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static int cls_cgroup_classify(struct sk_buff *skb, const struct tcf_proto *tp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 			       struct tcf_result *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	struct cls_cgroup_head *head = rcu_dereference_bh(tp->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	u32 classid = task_get_classid(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	if (unlikely(!head))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	if (!classid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	if (!tcf_em_tree_match(skb, &head->ematches, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	res->classid = classid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	res->class = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	return tcf_exts_exec(skb, &head->exts, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) static void *cls_cgroup_get(struct tcf_proto *tp, u32 handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) static int cls_cgroup_init(struct tcf_proto *tp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	[TCA_CGROUP_EMATCHES]	= { .type = NLA_NESTED },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) static void __cls_cgroup_destroy(struct cls_cgroup_head *head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	tcf_exts_destroy(&head->exts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	tcf_em_tree_destroy(&head->ematches);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	tcf_exts_put_net(&head->exts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	kfree(head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static void cls_cgroup_destroy_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	struct cls_cgroup_head *head = container_of(to_rcu_work(work),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 						    struct cls_cgroup_head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 						    rwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	__cls_cgroup_destroy(head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			     struct tcf_proto *tp, unsigned long base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 			     u32 handle, struct nlattr **tca,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			     void **arg, bool ovr, bool rtnl_held,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			     struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	struct nlattr *tb[TCA_CGROUP_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	struct cls_cgroup_head *new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (!tca[TCA_OPTIONS])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (!head && !handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (head && handle != head->handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	new = kzalloc(sizeof(*head), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	if (!new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		return -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	err = tcf_exts_init(&new->exts, net, TCA_CGROUP_ACT, TCA_CGROUP_POLICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	new->handle = handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	new->tp = tp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	err = nla_parse_nested_deprecated(tb, TCA_CGROUP_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 					  tca[TCA_OPTIONS], cgroup_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 					  NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &new->exts, ovr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 				true, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &new->ematches);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	rcu_assign_pointer(tp->root, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	if (head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		tcf_exts_get_net(&head->exts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		tcf_queue_work(&head->rwork, cls_cgroup_destroy_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	tcf_exts_destroy(&new->exts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	kfree(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static void cls_cgroup_destroy(struct tcf_proto *tp, bool rtnl_held,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 			       struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	/* Head can still be NULL due to cls_cgroup_init(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		if (tcf_exts_get_net(&head->exts))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			tcf_queue_work(&head->rwork, cls_cgroup_destroy_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			__cls_cgroup_destroy(head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int cls_cgroup_delete(struct tcf_proto *tp, void *arg, bool *last,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 			     bool rtnl_held, struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static void cls_cgroup_walk(struct tcf_proto *tp, struct tcf_walker *arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			    bool rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	if (arg->count < arg->skip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		goto skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (!head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	if (arg->fn(tp, head, arg) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		arg->stop = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) skip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	arg->count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static int cls_cgroup_dump(struct net *net, struct tcf_proto *tp, void *fh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 			   struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	struct cls_cgroup_head *head = rtnl_dereference(tp->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	struct nlattr *nest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	t->tcm_handle = head->handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (nest == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	if (tcf_exts_dump(skb, &head->exts) < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	    tcf_em_tree_dump(skb, &head->ematches, TCA_CGROUP_EMATCHES) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	nla_nest_end(skb, nest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	if (tcf_exts_dump_stats(skb, &head->exts) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	nla_nest_cancel(skb, nest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static struct tcf_proto_ops cls_cgroup_ops __read_mostly = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	.kind		=	"cgroup",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	.init		=	cls_cgroup_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	.change		=	cls_cgroup_change,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	.classify	=	cls_cgroup_classify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	.destroy	=	cls_cgroup_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	.get		=	cls_cgroup_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	.delete		=	cls_cgroup_delete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	.walk		=	cls_cgroup_walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	.dump		=	cls_cgroup_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	.owner		=	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int __init init_cgroup_cls(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	return register_tcf_proto_ops(&cls_cgroup_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static void __exit exit_cgroup_cls(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	unregister_tcf_proto_ops(&cls_cgroup_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) module_init(init_cgroup_cls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) module_exit(exit_cgroup_cls);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) MODULE_LICENSE("GPL");