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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/net/batman-adv/originator.c
....@@ -1,19 +1,7 @@
11 // SPDX-License-Identifier: GPL-2.0
2
-/* Copyright (C) 2009-2018  B.A.T.M.A.N. contributors:
2
+/* Copyright (C) 2009-2020  B.A.T.M.A.N. contributors:
33  *
44  * Marek Lindner, Simon Wunderlich
5
- *
6
- * This program is free software; you can redistribute it and/or
7
- * modify it under the terms of version 2 of the GNU General Public
8
- * License as published by the Free Software Foundation.
9
- *
10
- * This program is distributed in the hope that it will be useful, but
11
- * WITHOUT ANY WARRANTY; without even the implied warranty of
12
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
- * General Public License for more details.
14
- *
15
- * You should have received a copy of the GNU General Public License
16
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
175  */
186 
197 #include "originator.h"
....@@ -39,6 +27,7 @@
3927 #include <linux/stddef.h>
4028 #include <linux/workqueue.h>
4129 #include <net/sock.h>
30
+#include <uapi/linux/batadv_packet.h>
4231 #include <uapi/linux/batman_adv.h>
4332 
4433 #include "bat_algo.h"
....@@ -189,23 +178,13 @@
189178  *  and queue for free after rcu grace period
190179  * @ref: kref pointer of the originator-vlan object
191180  */
192
-static void batadv_orig_node_vlan_release(struct kref *ref)
181
+void batadv_orig_node_vlan_release(struct kref *ref)
193182 {
194183 	struct batadv_orig_node_vlan *orig_vlan;
195184 
196185 	orig_vlan = container_of(ref, struct batadv_orig_node_vlan, refcount);
197186 
198187 	kfree_rcu(orig_vlan, rcu);
199
-}
200
-
201
-/**
202
- * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release
203
- *  the originator-vlan object
204
- * @orig_vlan: the originator-vlan object to release
205
- */
206
-void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan)
207
-{
208
-	kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release);
209188 }
210189 
211190 /**
....@@ -243,7 +222,7 @@
243222  *  free after rcu grace period
244223  * @ref: kref pointer of the neigh_ifinfo
245224  */
246
-static void batadv_neigh_ifinfo_release(struct kref *ref)
225
+void batadv_neigh_ifinfo_release(struct kref *ref)
247226 {
248227 	struct batadv_neigh_ifinfo *neigh_ifinfo;
249228 
....@@ -256,21 +235,11 @@
256235 }
257236 
258237 /**
259
- * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release
260
- *  the neigh_ifinfo
261
- * @neigh_ifinfo: the neigh_ifinfo object to release
262
- */
263
-void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo)
264
-{
265
-	kref_put(&neigh_ifinfo->refcount, batadv_neigh_ifinfo_release);
266
-}
267
-
268
-/**
269238  * batadv_hardif_neigh_release() - release hardif neigh node from lists and
270239  *  queue for free after rcu grace period
271240  * @ref: kref pointer of the neigh_node
272241  */
273
-static void batadv_hardif_neigh_release(struct kref *ref)
242
+void batadv_hardif_neigh_release(struct kref *ref)
274243 {
275244 	struct batadv_hardif_neigh_node *hardif_neigh;
276245 
....@@ -286,21 +255,11 @@
286255 }
287256 
288257 /**
289
- * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter
290
- *  and possibly release it
291
- * @hardif_neigh: hardif neigh neighbor to free
292
- */
293
-void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh)
294
-{
295
-	kref_put(&hardif_neigh->refcount, batadv_hardif_neigh_release);
296
-}
297
-
298
-/**
299258  * batadv_neigh_node_release() - release neigh_node from lists and queue for
300259  *  free after rcu grace period
301260  * @ref: kref pointer of the neigh_node
302261  */
303
-static void batadv_neigh_node_release(struct kref *ref)
262
+void batadv_neigh_node_release(struct kref *ref)
304263 {
305264 	struct hlist_node *node_tmp;
306265 	struct batadv_neigh_node *neigh_node;
....@@ -321,22 +280,12 @@
321280 }
322281 
323282 /**
324
- * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly
325
- *  release it
326
- * @neigh_node: neigh neighbor to free
327
- */
328
-void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node)
329
-{
330
-	kref_put(&neigh_node->refcount, batadv_neigh_node_release);
331
-}
332
-
333
-/**
334283  * batadv_orig_router_get() - router to the originator depending on iface
335284  * @orig_node: the orig node for the router
336285  * @if_outgoing: the interface where the payload packet has been received or
337286  *  the OGM should be sent to
338287  *
339
- * Return: the neighbor which should be router for this orig_node/iface.
288
+ * Return: the neighbor which should be the router for this orig_node/iface.
340289  *
341290  * The object is returned with refcounter increased by 1.
342291  */
....@@ -526,7 +475,7 @@
526475  * Looks for and possibly returns a neighbour belonging to this originator list
527476  * which is connected through the provided hard interface.
528477  *
529
- * Return: neighbor when found. Othwerwise NULL
478
+ * Return: neighbor when found. Otherwise NULL
530479  */
531480 static struct batadv_neigh_node *
532481 batadv_neigh_node_get(const struct batadv_orig_node *orig_node,
....@@ -631,7 +580,7 @@
631580  *
632581  * Looks for and possibly returns a neighbour belonging to this hard interface.
633582  *
634
- * Return: neighbor when found. Othwerwise NULL
583
+ * Return: neighbor when found. Otherwise NULL
635584  */
636585 struct batadv_hardif_neigh_node *
637586 batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface,
....@@ -862,7 +811,7 @@
862811  *  free after rcu grace period
863812  * @ref: kref pointer of the orig_ifinfo
864813  */
865
-static void batadv_orig_ifinfo_release(struct kref *ref)
814
+void batadv_orig_ifinfo_release(struct kref *ref)
866815 {
867816 	struct batadv_orig_ifinfo *orig_ifinfo;
868817 	struct batadv_neigh_node *router;
....@@ -881,16 +830,6 @@
881830 }
882831 
883832 /**
884
- * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release
885
- *  the orig_ifinfo
886
- * @orig_ifinfo: the orig_ifinfo object to release
887
- */
888
-void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo)
889
-{
890
-	kref_put(&orig_ifinfo->refcount, batadv_orig_ifinfo_release);
891
-}
892
-
893
-/**
894833  * batadv_orig_node_free_rcu() - free the orig_node
895834  * @rcu: rcu pointer of the orig_node
896835  */
....@@ -904,9 +843,6 @@
904843 
905844 	batadv_frag_purge_orig(orig_node, NULL);
906845 
907
-	if (orig_node->bat_priv->algo_ops->orig.free)
908
-		orig_node->bat_priv->algo_ops->orig.free(orig_node);
909
-
910846 	kfree(orig_node->tt_buff);
911847 	kfree(orig_node);
912848 }
....@@ -916,7 +852,7 @@
916852  *  free after rcu grace period
917853  * @ref: kref pointer of the orig_node
918854  */
919
-static void batadv_orig_node_release(struct kref *ref)
855
+void batadv_orig_node_release(struct kref *ref)
920856 {
921857 	struct hlist_node *node_tmp;
922858 	struct batadv_neigh_node *neigh_node;
....@@ -963,16 +899,6 @@
963899 }
964900 
965901 /**
966
- * batadv_orig_node_put() - decrement the orig node refcounter and possibly
967
- *  release it
968
- * @orig_node: the orig node to free
969
- */
970
-void batadv_orig_node_put(struct batadv_orig_node *orig_node)
971
-{
972
-	kref_put(&orig_node->refcount, batadv_orig_node_release);
973
-}
974
-
975
-/**
976902  * batadv_originator_free() - Free all originator structures
977903  * @bat_priv: the bat priv with all the soft interface information
978904  */
....@@ -1013,7 +939,7 @@
1013939  * @bat_priv: the bat priv with all the soft interface information
1014940  * @addr: the mac address of the originator
1015941  *
1016
- * Creates a new originator object and initialise all the generic fields.
942
+ * Creates a new originator object and initialises all the generic fields.
1017943  * The new object is not added to the originator list.
1018944  *
1019945  * Return: the newly created object or NULL on failure.
....@@ -1058,7 +984,8 @@
1058984 	orig_node->bcast_seqno_reset = reset_time;
1059985 
1060986 #ifdef CONFIG_BATMAN_ADV_MCAST
1061
-	orig_node->mcast_flags = BATADV_NO_FLAGS;
987
+	orig_node->mcast_flags = BATADV_MCAST_WANT_NO_RTR4;
988
+	orig_node->mcast_flags |= BATADV_MCAST_WANT_NO_RTR6;
1062989 	INIT_HLIST_NODE(&orig_node->mcast_want_all_unsnoopables_node);
1063990 	INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv4_node);
1064991 	INIT_HLIST_NODE(&orig_node->mcast_want_all_ipv6_node);
....@@ -1554,108 +1481,4 @@
15541481 		dev_put(soft_iface);
15551482 
15561483 	return ret;
1557
-}
1558
-
1559
-/**
1560
- * batadv_orig_hash_add_if() - Add interface to originators in orig_hash
1561
- * @hard_iface: hard interface to add (already slave of the soft interface)
1562
- * @max_if_num: new number of interfaces
1563
- *
1564
- * Return: 0 on success or negative error number in case of failure
1565
- */
1566
-int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
1567
-			    unsigned int max_if_num)
1568
-{
1569
-	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
1570
-	struct batadv_algo_ops *bao = bat_priv->algo_ops;
1571
-	struct batadv_hashtable *hash = bat_priv->orig_hash;
1572
-	struct hlist_head *head;
1573
-	struct batadv_orig_node *orig_node;
1574
-	u32 i;
1575
-	int ret;
1576
-
1577
-	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
1578
-	 * if_num
1579
-	 */
1580
-	for (i = 0; i < hash->size; i++) {
1581
-		head = &hash->table[i];
1582
-
1583
-		rcu_read_lock();
1584
-		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
1585
-			ret = 0;
1586
-			if (bao->orig.add_if)
1587
-				ret = bao->orig.add_if(orig_node, max_if_num);
1588
-			if (ret == -ENOMEM)
1589
-				goto err;
1590
-		}
1591
-		rcu_read_unlock();
1592
-	}
1593
-
1594
-	return 0;
1595
-
1596
-err:
1597
-	rcu_read_unlock();
1598
-	return -ENOMEM;
1599
-}
1600
-
1601
-/**
1602
- * batadv_orig_hash_del_if() - Remove interface from originators in orig_hash
1603
- * @hard_iface: hard interface to remove (still slave of the soft interface)
1604
- * @max_if_num: new number of interfaces
1605
- *
1606
- * Return: 0 on success or negative error number in case of failure
1607
- */
1608
-int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
1609
-			    unsigned int max_if_num)
1610
-{
1611
-	struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
1612
-	struct batadv_hashtable *hash = bat_priv->orig_hash;
1613
-	struct hlist_head *head;
1614
-	struct batadv_hard_iface *hard_iface_tmp;
1615
-	struct batadv_orig_node *orig_node;
1616
-	struct batadv_algo_ops *bao = bat_priv->algo_ops;
1617
-	u32 i;
1618
-	int ret;
1619
-
1620
-	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
1621
-	 * if_num
1622
-	 */
1623
-	for (i = 0; i < hash->size; i++) {
1624
-		head = &hash->table[i];
1625
-
1626
-		rcu_read_lock();
1627
-		hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
1628
-			ret = 0;
1629
-			if (bao->orig.del_if)
1630
-				ret = bao->orig.del_if(orig_node, max_if_num,
1631
-						       hard_iface->if_num);
1632
-			if (ret == -ENOMEM)
1633
-				goto err;
1634
-		}
1635
-		rcu_read_unlock();
1636
-	}
1637
-
1638
-	/* renumber remaining batman interfaces _inside_ of orig_hash_lock */
1639
-	rcu_read_lock();
1640
-	list_for_each_entry_rcu(hard_iface_tmp, &batadv_hardif_list, list) {
1641
-		if (hard_iface_tmp->if_status == BATADV_IF_NOT_IN_USE)
1642
-			continue;
1643
-
1644
-		if (hard_iface == hard_iface_tmp)
1645
-			continue;
1646
-
1647
-		if (hard_iface->soft_iface != hard_iface_tmp->soft_iface)
1648
-			continue;
1649
-
1650
-		if (hard_iface_tmp->if_num > hard_iface->if_num)
1651
-			hard_iface_tmp->if_num--;
1652
-	}
1653
-	rcu_read_unlock();
1654
-
1655
-	hard_iface->if_num = -1;
1656
-	return 0;
1657
-
1658
-err:
1659
-	rcu_read_unlock();
1660
-	return -ENOMEM;
16611484 }