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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/net/sched/cls_fw.c
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..
@@ -1,10 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * net/sched/cls_fw.c	Classifier mapping ipchains' fwmark to traffic class.
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- *
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- *		This program is free software; you can redistribute it and/or
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- *		modify it under the terms of the GNU General Public License
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- *		as published by the Free Software Foundation; either version
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- *		2 of the License, or (at your option) any later version.
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  *
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  * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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  *
..
..
@@ -12,10 +8,6 @@
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  * Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_walk off by one
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  * Karlis Peisenieks <karlis@mt.lv> : 990415 : fw_delete killed all the filter (and kernel).
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10
  * Alex <alex@pilotsoft.com> : 2004xxyy: Added Action extension
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- *
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- * JHS: We should remove the CONFIG_NET_CLS_IND from here
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- * eventually when the meta match extension is made available
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- *
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  */
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12
 
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 #include <linux/module.h>
..
..
@@ -42,9 +34,7 @@
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 	struct fw_filter __rcu	*next;
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 	u32			id;
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 	struct tcf_result	res;
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-#ifdef CONFIG_NET_CLS_IND
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 	int			ifindex;
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-#endif /* CONFIG_NET_CLS_IND */
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 	struct tcf_exts		exts;
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 	struct tcf_proto	*tp;
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 	struct rcu_work		rwork;
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@@ -72,10 +62,8 @@
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 		     f = rcu_dereference_bh(f->next)) {
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 			if (f->id == id) {
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 				*res = f->res;
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-#ifdef CONFIG_NET_CLS_IND
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 				if (!tcf_match_indev(skb, f->ifindex))
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 					continue;
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-#endif /* CONFIG_NET_CLS_IND */
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 				r = tcf_exts_exec(skb, &f->exts, res);
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 				if (r < 0)
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 					continue;
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@@ -139,7 +127,8 @@
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 	rtnl_unlock();
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128
 }
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129
 
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-static void fw_destroy(struct tcf_proto *tp, struct netlink_ext_ack *extack)
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+static void fw_destroy(struct tcf_proto *tp, bool rtnl_held,
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+		       struct netlink_ext_ack *extack)
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 {
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 	struct fw_head *head = rtnl_dereference(tp->root);
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134
 	struct fw_filter *f;
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@@ -163,7 +152,7 @@
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 }
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153
 
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 static int fw_delete(struct tcf_proto *tp, void *arg, bool *last,
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-		     struct netlink_ext_ack *extack)
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+		     bool rtnl_held, struct netlink_ext_ack *extack)
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 {
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 	struct fw_head *head = rtnl_dereference(tp->root);
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 	struct fw_filter *f = arg;
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..
@@ -217,7 +206,7 @@
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206
 	int err;
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207
 
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 	err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &f->exts, ovr,
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-				extack);
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+				true, extack);
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 	if (err < 0)
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 		return err;
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212
 
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..
@@ -226,7 +215,6 @@
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215
 		tcf_bind_filter(tp, &f->res, base);
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216
 	}
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217
 
229
-#ifdef CONFIG_NET_CLS_IND
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 	if (tb[TCA_FW_INDEV]) {
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 		int ret;
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220
 		ret = tcf_change_indev(net, tb[TCA_FW_INDEV], extack);
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..
@@ -234,7 +222,6 @@
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 			return ret;
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223
 		f->ifindex = ret;
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224
 	}
237
-#endif /* CONFIG_NET_CLS_IND */
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225
 
239
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 	err = -EINVAL;
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227
 	if (tb[TCA_FW_MASK]) {
..
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@@ -250,7 +237,8 @@
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237
 static int fw_change(struct net *net, struct sk_buff *in_skb,
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 		     struct tcf_proto *tp, unsigned long base,
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239
 		     u32 handle, struct nlattr **tca, void **arg,
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-		     bool ovr, struct netlink_ext_ack *extack)
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+		     bool ovr, bool rtnl_held,
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+		     struct netlink_ext_ack *extack)
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242
 {
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243
 	struct fw_head *head = rtnl_dereference(tp->root);
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244
 	struct fw_filter *f = *arg;
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@@ -261,7 +249,8 @@
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 	if (!opt)
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250
 		return handle ? -EINVAL : 0; /* Succeed if it is old method. */
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251
 
264
-	err = nla_parse_nested(tb, TCA_FW_MAX, opt, fw_policy, NULL);
252
+	err = nla_parse_nested_deprecated(tb, TCA_FW_MAX, opt, fw_policy,
253
+					  NULL);
265
254
 	if (err < 0)
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255
 		return err;
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256
 
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@@ -278,12 +267,11 @@
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267
 
279
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 		fnew->id = f->id;
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269
 		fnew->res = f->res;
281
-#ifdef CONFIG_NET_CLS_IND
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270
 		fnew->ifindex = f->ifindex;
283
-#endif /* CONFIG_NET_CLS_IND */
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271
 		fnew->tp = f->tp;
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272
 
286
-		err = tcf_exts_init(&fnew->exts, TCA_FW_ACT, TCA_FW_POLICE);
273
+		err = tcf_exts_init(&fnew->exts, net, TCA_FW_ACT,
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+				    TCA_FW_POLICE);
287
275
 		if (err < 0) {
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276
 			kfree(fnew);
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277
 			return err;
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@@ -332,7 +320,7 @@
332
320
 	if (f == NULL)
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321
 		return -ENOBUFS;
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322
 
335
-	err = tcf_exts_init(&f->exts, TCA_FW_ACT, TCA_FW_POLICE);
323
+	err = tcf_exts_init(&f->exts, net, TCA_FW_ACT, TCA_FW_POLICE);
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324
 	if (err < 0)
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325
 		goto errout;
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326
 	f->id = handle;
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@@ -354,7 +342,8 @@
354
342
 	return err;
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343
 }
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344
 
357
-static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg)
345
+static void fw_walk(struct tcf_proto *tp, struct tcf_walker *arg,
346
+		    bool rtnl_held)
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347
 {
359
348
 	struct fw_head *head = rtnl_dereference(tp->root);
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349
 	int h;
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@@ -384,7 +373,7 @@
384
373
 }
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374
 
386
375
 static int fw_dump(struct net *net, struct tcf_proto *tp, void *fh,
387
-		   struct sk_buff *skb, struct tcmsg *t)
376
+		   struct sk_buff *skb, struct tcmsg *t, bool rtnl_held)
388
377
 {
389
378
 	struct fw_head *head = rtnl_dereference(tp->root);
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379
 	struct fw_filter *f = fh;
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@@ -398,21 +387,19 @@
398
387
 	if (!f->res.classid && !tcf_exts_has_actions(&f->exts))
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388
 		return skb->len;
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389
 
401
-	nest = nla_nest_start(skb, TCA_OPTIONS);
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+	nest = nla_nest_start_noflag(skb, TCA_OPTIONS);
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391
 	if (nest == NULL)
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392
 		goto nla_put_failure;
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393
 
405
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 	if (f->res.classid &&
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395
 	    nla_put_u32(skb, TCA_FW_CLASSID, f->res.classid))
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 		goto nla_put_failure;
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-#ifdef CONFIG_NET_CLS_IND
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397
 	if (f->ifindex) {
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398
 		struct net_device *dev;
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399
 		dev = __dev_get_by_index(net, f->ifindex);
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400
 		if (dev && nla_put_string(skb, TCA_FW_INDEV, dev->name))
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401
 			goto nla_put_failure;
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402
 	}
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-#endif /* CONFIG_NET_CLS_IND */
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403
 	if (head->mask != 0xFFFFFFFF &&
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404
 	    nla_put_u32(skb, TCA_FW_MASK, head->mask))
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 		goto nla_put_failure;