1 // SPDX-License-Identifier: GPL-2.0-or-later
34 	struct tcf_proto	*tp;  member
35 	struct list_head	link;  member
41 				     const struct tcf_proto *tp,  in basic_classify()  argument
45 	struct basic_head *head = rcu_dereference_bh(tp->root);  in basic_classify()
48 	list_for_each_entry_rcu(f, &head->flist, link) {  in basic_classify()
49 		__this_cpu_inc(f->pf->rcnt);  in basic_classify()
50 		if (!tcf_em_tree_match(skb, &f->ematches, NULL))  in basic_classify()
52 		__this_cpu_inc(f->pf->rhit);  in basic_classify()
53 		*res = f->res;  in basic_classify()
54 		r = tcf_exts_exec(skb, &f->exts, res);  in basic_classify()
59 	return -1;  in basic_classify()
62 static void *basic_get(struct tcf_proto *tp, u32 handle)  in basic_get()  argument
64 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_get()
67 	list_for_each_entry(f, &head->flist, link) {  in basic_get()
68 		if (f->handle == handle) {  in basic_get()
76 static int basic_init(struct tcf_proto *tp)  in basic_init()  argument
82 		return -ENOBUFS;  in basic_init()
83 	INIT_LIST_HEAD(&head->flist);  in basic_init()
84 	idr_init(&head->handle_idr);  in basic_init()
85 	rcu_assign_pointer(tp->root, head);  in basic_init()
91 	tcf_exts_destroy(&f->exts);  in __basic_delete_filter()
92 	tcf_em_tree_destroy(&f->ematches);  in __basic_delete_filter()
93 	tcf_exts_put_net(&f->exts);  in __basic_delete_filter()
94 	free_percpu(f->pf);  in __basic_delete_filter()
108 static void basic_destroy(struct tcf_proto *tp, bool rtnl_held,  in basic_destroy()  argument
111 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_destroy()
114 	list_for_each_entry_safe(f, n, &head->flist, link) {  in basic_destroy()
115 		list_del_rcu(&f->link);  in basic_destroy()
116 		tcf_unbind_filter(tp, &f->res);  in basic_destroy()
117 		idr_remove(&head->handle_idr, f->handle);  in basic_destroy()
118 		if (tcf_exts_get_net(&f->exts))  in basic_destroy()
119 			tcf_queue_work(&f->rwork, basic_delete_filter_work);  in basic_destroy()
123 	idr_destroy(&head->handle_idr);  in basic_destroy()
127 static int basic_delete(struct tcf_proto *tp, void *arg, bool *last,  in basic_delete()  argument
130 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_delete()
133 	list_del_rcu(&f->link);  in basic_delete()
134 	tcf_unbind_filter(tp, &f->res);  in basic_delete()
135 	idr_remove(&head->handle_idr, f->handle);  in basic_delete()
136 	tcf_exts_get_net(&f->exts);  in basic_delete()
137 	tcf_queue_work(&f->rwork, basic_delete_filter_work);  in basic_delete()
138 	*last = list_empty(&head->flist);  in basic_delete()
147 static int basic_set_parms(struct net *net, struct tcf_proto *tp,  in basic_set_parms()  argument
155 	err = tcf_exts_validate(net, tp, tb, est, &f->exts, flags, extack);  in basic_set_parms()
159 	err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &f->ematches);  in basic_set_parms()
164 		f->res.classid = nla_get_u32(tb[TCA_BASIC_CLASSID]);  in basic_set_parms()
165 		tcf_bind_filter(tp, &f->res, base);  in basic_set_parms()
168 	f->tp = tp;  in basic_set_parms()
173 			struct tcf_proto *tp, unsigned long base, u32 handle,  in basic_change()  argument
178 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_change()
184 		return -EINVAL;  in basic_change()
192 		if (handle && fold->handle != handle)  in basic_change()
193 			return -EINVAL;  in basic_change()
198 		return -ENOBUFS;  in basic_change()
200 	err = tcf_exts_init(&fnew->exts, net, TCA_BASIC_ACT, TCA_BASIC_POLICE);  in basic_change()
206 		err = idr_alloc_u32(&head->handle_idr, fnew, &handle,  in basic_change()
209 		err = idr_alloc_u32(&head->handle_idr, fnew, &handle,  in basic_change()
214 	fnew->handle = handle;  in basic_change()
215 	fnew->pf = alloc_percpu(struct tc_basic_pcnt);  in basic_change()
216 	if (!fnew->pf) {  in basic_change()
217 		err = -ENOMEM;  in basic_change()
221 	err = basic_set_parms(net, tp, fnew, base, tb, tca[TCA_RATE], flags,  in basic_change()
225 			idr_remove(&head->handle_idr, fnew->handle);  in basic_change()
232 		idr_replace(&head->handle_idr, fnew, fnew->handle);  in basic_change()
233 		list_replace_rcu(&fold->link, &fnew->link);  in basic_change()
234 		tcf_unbind_filter(tp, &fold->res);  in basic_change()
235 		tcf_exts_get_net(&fold->exts);  in basic_change()
236 		tcf_queue_work(&fold->rwork, basic_delete_filter_work);  in basic_change()
238 		list_add_rcu(&fnew->link, &head->flist);  in basic_change()
243 	free_percpu(fnew->pf);  in basic_change()
244 	tcf_exts_destroy(&fnew->exts);  in basic_change()
249 static void basic_walk(struct tcf_proto *tp, struct tcf_walker *arg,  in basic_walk()  argument
252 	struct basic_head *head = rtnl_dereference(tp->root);  in basic_walk()
255 	list_for_each_entry(f, &head->flist, link) {  in basic_walk()
256 		if (!tc_cls_stats_dump(tp, arg, f))  in basic_walk()
266 	tc_cls_bind_class(classid, cl, q, &f->res, base);  in basic_bind_class()
269 static int basic_dump(struct net *net, struct tcf_proto *tp, void *fh,  in basic_dump()  argument
278 		return skb->len;  in basic_dump()
280 	t->tcm_handle = f->handle;  in basic_dump()
286 	if (f->res.classid &&  in basic_dump()
287 	    nla_put_u32(skb, TCA_BASIC_CLASSID, f->res.classid))  in basic_dump()
291 		struct tc_basic_pcnt *pf = per_cpu_ptr(f->pf, cpu);  in basic_dump()
293 		gpf.rcnt += pf->rcnt;  in basic_dump()
294 		gpf.rhit += pf->rhit;  in basic_dump()
302 	if (tcf_exts_dump(skb, &f->exts) < 0 ||  in basic_dump()
303 	    tcf_em_tree_dump(skb, &f->ematches, TCA_BASIC_EMATCHES) < 0)  in basic_dump()
308 	if (tcf_exts_dump_stats(skb, &f->exts) < 0)  in basic_dump()
311 	return skb->len;  in basic_dump()
315 	return -1;  in basic_dump()