1 // SPDX-License-Identifier: GPL-2.0-or-later
33 	struct tcf_proto	*tp;  member
34 	struct list_head	link;  member
39 static int basic_classify(struct sk_buff *skb, const struct tcf_proto *tp,  in basic_classify()  argument
43 	struct basic_head *head = rcu_dereference_bh(tp->root);  in basic_classify()
46 	list_for_each_entry_rcu(f, &head->flist, link) {  in basic_classify()
47 		__this_cpu_inc(f->pf->rcnt);  in basic_classify()
48 		if (!tcf_em_tree_match(skb, &f->ematches, NULL))  in basic_classify()
50 		__this_cpu_inc(f->pf->rhit);  in basic_classify()
51 		*res = f->res;  in basic_classify()
52 		r = tcf_exts_exec(skb, &f->exts, res);  in basic_classify()
57 	return -1;  in basic_classify()
60 static void *basic_get(struct tcf_proto *tp, u32 handle)  in basic_get()  argument
62 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_get()
65 	list_for_each_entry(f, &head->flist, link) {  in basic_get()
66 		if (f->handle == handle) {  in basic_get()
74 static int basic_init(struct tcf_proto *tp)  in basic_init()  argument
80 		return -ENOBUFS;  in basic_init()
81 	INIT_LIST_HEAD(&head->flist);  in basic_init()
82 	idr_init(&head->handle_idr);  in basic_init()
83 	rcu_assign_pointer(tp->root, head);  in basic_init()
89 	tcf_exts_destroy(&f->exts);  in __basic_delete_filter()
90 	tcf_em_tree_destroy(&f->ematches);  in __basic_delete_filter()
91 	tcf_exts_put_net(&f->exts);  in __basic_delete_filter()
92 	free_percpu(f->pf);  in __basic_delete_filter()
106 static void basic_destroy(struct tcf_proto *tp, bool rtnl_held,  in basic_destroy()  argument
109 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_destroy()
112 	list_for_each_entry_safe(f, n, &head->flist, link) {  in basic_destroy()
113 		list_del_rcu(&f->link);  in basic_destroy()
114 		tcf_unbind_filter(tp, &f->res);  in basic_destroy()
115 		idr_remove(&head->handle_idr, f->handle);  in basic_destroy()
116 		if (tcf_exts_get_net(&f->exts))  in basic_destroy()
117 			tcf_queue_work(&f->rwork, basic_delete_filter_work);  in basic_destroy()
121 	idr_destroy(&head->handle_idr);  in basic_destroy()
125 static int basic_delete(struct tcf_proto *tp, void *arg, bool *last,  in basic_delete()  argument
128 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_delete()
131 	list_del_rcu(&f->link);  in basic_delete()
132 	tcf_unbind_filter(tp, &f->res);  in basic_delete()
133 	idr_remove(&head->handle_idr, f->handle);  in basic_delete()
134 	tcf_exts_get_net(&f->exts);  in basic_delete()
135 	tcf_queue_work(&f->rwork, basic_delete_filter_work);  in basic_delete()
136 	*last = list_empty(&head->flist);  in basic_delete()
145 static int basic_set_parms(struct net *net, struct tcf_proto *tp,  in basic_set_parms()  argument
153 	err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr, true, extack);  in basic_set_parms()
157 	err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &f->ematches);  in basic_set_parms()
162 		f->res.classid = nla_get_u32(tb[TCA_BASIC_CLASSID]);  in basic_set_parms()
163 		tcf_bind_filter(tp, &f->res, base);  in basic_set_parms()
166 	f->tp = tp;  in basic_set_parms()
171 			struct tcf_proto *tp, unsigned long base, u32 handle,  in basic_change()  argument
176 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_change()
182 		return -EINVAL;  in basic_change()
190 		if (handle && fold->handle != handle)  in basic_change()
191 			return -EINVAL;  in basic_change()
196 		return -ENOBUFS;  in basic_change()
198 	err = tcf_exts_init(&fnew->exts, net, TCA_BASIC_ACT, TCA_BASIC_POLICE);  in basic_change()
204 		err = idr_alloc_u32(&head->handle_idr, fnew, &handle,  in basic_change()
207 		err = idr_alloc_u32(&head->handle_idr, fnew, &handle,  in basic_change()
212 	fnew->handle = handle;  in basic_change()
213 	fnew->pf = alloc_percpu(struct tc_basic_pcnt);  in basic_change()
214 	if (!fnew->pf) {  in basic_change()
215 		err = -ENOMEM;  in basic_change()
219 	err = basic_set_parms(net, tp, fnew, base, tb, tca[TCA_RATE], ovr,  in basic_change()
223 			idr_remove(&head->handle_idr, fnew->handle);  in basic_change()
230 		idr_replace(&head->handle_idr, fnew, fnew->handle);  in basic_change()
231 		list_replace_rcu(&fold->link, &fnew->link);  in basic_change()
232 		tcf_unbind_filter(tp, &fold->res);  in basic_change()
233 		tcf_exts_get_net(&fold->exts);  in basic_change()
234 		tcf_queue_work(&fold->rwork, basic_delete_filter_work);  in basic_change()
236 		list_add_rcu(&fnew->link, &head->flist);  in basic_change()
241 	free_percpu(fnew->pf);  in basic_change()
242 	tcf_exts_destroy(&fnew->exts);  in basic_change()
247 static void basic_walk(struct tcf_proto *tp, struct tcf_walker *arg,  in basic_walk()  argument
250 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_walk()
253 	list_for_each_entry(f, &head->flist, link) {  in basic_walk()
254 		if (arg->count < arg->skip)  in basic_walk()
257 		if (arg->fn(tp, f, arg) < 0) {  in basic_walk()
258 			arg->stop = 1;  in basic_walk()
262 		arg->count++;  in basic_walk()
271 	if (f && f->res.classid == classid) {  in basic_bind_class()
273 			__tcf_bind_filter(q, &f->res, base);  in basic_bind_class()
275 			__tcf_unbind_filter(q, &f->res);  in basic_bind_class()
279 static int basic_dump(struct net *net, struct tcf_proto *tp, void *fh,  in basic_dump()  argument
288 		return skb->len;  in basic_dump()
290 	t->tcm_handle = f->handle;  in basic_dump()
296 	if (f->res.classid &&  in basic_dump()
297 	    nla_put_u32(skb, TCA_BASIC_CLASSID, f->res.classid))  in basic_dump()
301 		struct tc_basic_pcnt *pf = per_cpu_ptr(f->pf, cpu);  in basic_dump()
303 		gpf.rcnt += pf->rcnt;  in basic_dump()
304 		gpf.rhit += pf->rhit;  in basic_dump()
312 	if (tcf_exts_dump(skb, &f->exts) < 0 ||  in basic_dump()
313 	    tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)  in basic_dump()
318 	if (tcf_exts_dump_stats(skb, &f->exts) < 0)  in basic_dump()
321 	return skb->len;  in basic_dump()
325 	return -1;  in basic_dump()