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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/net/batman-adv/types.h
....@@ -1,19 +1,7 @@
11 /* SPDX-License-Identifier: GPL-2.0 */
2
-/* Copyright (C) 2007-2018  B.A.T.M.A.N. contributors:
2
+/* Copyright (C) 2007-2020  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 #ifndef _NET_BATMAN_ADV_TYPES_H_
....@@ -26,20 +14,22 @@
2614 #include <linux/average.h>
2715 #include <linux/bitops.h>
2816 #include <linux/compiler.h>
17
+#include <linux/if.h>
2918 #include <linux/if_ether.h>
3019 #include <linux/kref.h>
3120 #include <linux/mutex.h>
3221 #include <linux/netdevice.h>
3322 #include <linux/netlink.h>
3423 #include <linux/sched.h> /* for linux/wait.h */
24
+#include <linux/seq_file.h>
25
+#include <linux/skbuff.h>
3526 #include <linux/spinlock.h>
27
+#include <linux/timer.h>
3628 #include <linux/types.h>
3729 #include <linux/wait.h>
3830 #include <linux/workqueue.h>
3931 #include <uapi/linux/batadv_packet.h>
4032 #include <uapi/linux/batman_adv.h>
41
-
42
-struct seq_file;
4333 
4434 #ifdef CONFIG_BATMAN_ADV_DAT
4535 
....@@ -131,6 +121,15 @@
131121 	/** @elp_wq: workqueue used to schedule ELP transmissions */
132122 	struct delayed_work elp_wq;
133123 
124
+	/** @aggr_wq: workqueue used to transmit queued OGM packets */
125
+	struct delayed_work aggr_wq;
126
+
127
+	/** @aggr_list: queue for to be aggregated OGM packets */
128
+	struct sk_buff_head aggr_list;
129
+
130
+	/** @aggr_len: size of the OGM aggregate (excluding ethernet header) */
131
+	unsigned int aggr_len;
132
+
134133 	/**
135134 	 * @throughput_override: throughput override to disable link
136135 	 *  auto-detection
....@@ -171,9 +170,6 @@
171170 	/** @list: list node for batadv_hardif_list */
172171 	struct list_head list;
173172 
174
-	/** @if_num: identificator of the interface */
175
-	unsigned int if_num;
176
-
177173 	/** @if_status: status of the interface for batman-adv */
178174 	char if_status;
179175 
....@@ -212,6 +208,12 @@
212208 	/** @rcu: struct used for freeing in an RCU-safe manner */
213209 	struct rcu_head rcu;
214210 
211
+	/**
212
+	 * @hop_penalty: penalty which will be applied to the tq-field
213
+	 * of an OGM received via this interface
214
+	 */
215
+	atomic_t hop_penalty;
216
+
215217 	/** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */
216218 	struct batadv_hard_iface_bat_iv bat_iv;
217219 
....@@ -234,6 +236,20 @@
234236 
235237 	/** @neigh_list_lock: lock protecting neigh_list */
236238 	spinlock_t neigh_list_lock;
239
+};
240
+
241
+/**
242
+ * struct batadv_orig_ifinfo - B.A.T.M.A.N. IV private orig_ifinfo members
243
+ */
244
+struct batadv_orig_ifinfo_bat_iv {
245
+	/**
246
+	 * @bcast_own: bitfield which counts the number of our OGMs this
247
+	 * orig_node rebroadcasted "back" to us  (relative to last_real_seqno)
248
+	 */
249
+	DECLARE_BITMAP(bcast_own, BATADV_TQ_LOCAL_WINDOW_SIZE);
250
+
251
+	/** @bcast_own_sum: sum of bcast_own */
252
+	u8 bcast_own_sum;
237253 };
238254 
239255 /**
....@@ -260,6 +276,9 @@
260276 
261277 	/** @batman_seqno_reset: time when the batman seqno window was reset */
262278 	unsigned long batman_seqno_reset;
279
+
280
+	/** @bat_iv: B.A.T.M.A.N. IV private structure */
281
+	struct batadv_orig_ifinfo_bat_iv bat_iv;
263282 
264283 	/** @refcount: number of contexts the object is used */
265284 	struct kref refcount;
....@@ -343,19 +362,10 @@
343362  */
344363 struct batadv_orig_bat_iv {
345364 	/**
346
-	 * @bcast_own: set of bitfields (one per hard-interface) where each one
347
-	 * counts the number of our OGMs this orig_node rebroadcasted "back" to
348
-	 * us  (relative to last_real_seqno). Every bitfield is
349
-	 * BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
350
-	 */
351
-	unsigned long *bcast_own;
352
-
353
-	/** @bcast_own_sum: sum of bcast_own */
354
-	u8 *bcast_own_sum;
355
-
356
-	/**
357
-	 * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
358
-	 * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
365
+	 * @ogm_cnt_lock: lock protecting &batadv_orig_ifinfo_bat_iv.bcast_own,
366
+	 * &batadv_orig_ifinfo_bat_iv.bcast_own_sum,
367
+	 * &batadv_neigh_ifinfo_bat_iv.bat_iv.real_bits and
368
+	 * &batadv_neigh_ifinfo_bat_iv.real_packet_count
359369 	 */
360370 	spinlock_t ogm_cnt_lock;
361371 };
....@@ -413,6 +423,17 @@
413423 	 *  list
414424 	 */
415425 	struct hlist_node mcast_want_all_ipv6_node;
426
+
427
+	/**
428
+	 * @mcast_want_all_rtr4_node: a list node for the mcast.want_all_rtr4
429
+	 *  list
430
+	 */
431
+	struct hlist_node mcast_want_all_rtr4_node;
432
+	/**
433
+	 * @mcast_want_all_rtr6_node: a list node for the mcast.want_all_rtr6
434
+	 *  list
435
+	 */
436
+	struct hlist_node mcast_want_all_rtr6_node;
416437 #endif
417438 
418439 	/** @capabilities: announced capabilities of this originator */
....@@ -440,9 +461,9 @@
440461 	spinlock_t tt_buff_lock;
441462 
442463 	/**
443
-	 * @tt_lock: prevents from updating the table while reading it. Table
444
-	 *  update is made up by two operations (data structure update and
445
-	 *  metdata -CRC/TTVN-recalculation) and they have to be executed
464
+	 * @tt_lock: avoids concurrent read from and write to the table. Table
465
+	 *  update is made up of two operations (data structure update and
466
+	 *  metadata -CRC/TTVN-recalculation) and they have to be executed
446467 	 *  atomically in order to avoid another thread to read the
447468 	 *  table/metadata between those.
448469 	 */
....@@ -733,7 +754,7 @@
733754  * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
734755  */
735756 struct batadv_bcast_duplist_entry {
736
-	/** @orig: mac address of orig node orginating the broadcast */
757
+	/** @orig: mac address of orig node originating the broadcast */
737758 	u8 orig[ETH_ALEN];
738759 
739760 	/** @crc: crc32 checksum of broadcast payload */
....@@ -995,8 +1016,8 @@
9951016 
9961017 	/**
9971018 	 * @commit_lock: prevents from executing a local TT commit while reading
998
-	 *  the local table. The local TT commit is made up by two operations
999
-	 *  (data structure update and metdata -CRC/TTVN- recalculation) and
1019
+	 *  the local table. The local TT commit is made up of two operations
1020
+	 *  (data structure update and metadata -CRC/TTVN- recalculation) and
10001021 	 *  they have to be executed atomically in order to avoid another thread
10011022 	 *  to read the table/metadata between those.
10021023 	 */
....@@ -1009,7 +1030,7 @@
10091030 #ifdef CONFIG_BATMAN_ADV_BLA
10101031 
10111032 /**
1012
- * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
1033
+ * struct batadv_priv_bla - per mesh interface bridge loop avoidance data
10131034  */
10141035 struct batadv_priv_bla {
10151036 	/** @num_requests: number of bla requests in flight */
....@@ -1071,7 +1092,7 @@
10711092  * struct batadv_priv_debug_log - debug logging data
10721093  */
10731094 struct batadv_priv_debug_log {
1074
-	/** @log_buff: buffer holding the logs (ring bufer) */
1095
+	/** @log_buff: buffer holding the logs (ring buffer) */
10751096 	char log_buff[BATADV_LOG_BUF_LEN];
10761097 
10771098 	/** @log_start: index of next character to read */
....@@ -1095,11 +1116,14 @@
10951116 	/** @gateway_list: list of available gateway nodes */
10961117 	struct hlist_head gateway_list;
10971118 
1098
-	/** @list_lock: lock protecting gateway_list & curr_gw */
1119
+	/** @list_lock: lock protecting gateway_list, curr_gw, generation */
10991120 	spinlock_t list_lock;
11001121 
11011122 	/** @curr_gw: pointer to currently selected gateway node */
11021123 	struct batadv_gw_node __rcu *curr_gw;
1124
+
1125
+	/** @generation: current (generation) sequence number */
1126
+	unsigned int generation;
11031127 
11041128 	/**
11051129 	 * @mode: gateway operation: off, client or server (see batadv_gw_modes)
....@@ -1177,6 +1201,26 @@
11771201 };
11781202 
11791203 /**
1204
+ * struct batadv_mcast_mla_flags - flags for the querier, bridge and tvlv state
1205
+ */
1206
+struct batadv_mcast_mla_flags {
1207
+	/** @querier_ipv4: the current state of an IGMP querier in the mesh */
1208
+	struct batadv_mcast_querier_state querier_ipv4;
1209
+
1210
+	/** @querier_ipv6: the current state of an MLD querier in the mesh */
1211
+	struct batadv_mcast_querier_state querier_ipv6;
1212
+
1213
+	/** @enabled: whether the multicast tvlv is currently enabled */
1214
+	unsigned char enabled:1;
1215
+
1216
+	/** @bridged: whether the soft interface has a bridge on top */
1217
+	unsigned char bridged:1;
1218
+
1219
+	/** @tvlv_flags: the flags we have last sent in our mcast tvlv */
1220
+	u8 tvlv_flags;
1221
+};
1222
+
1223
+/**
11801224  * struct batadv_priv_mcast - per mesh interface mcast data
11811225  */
11821226 struct batadv_priv_mcast {
....@@ -1204,20 +1248,22 @@
12041248 	 */
12051249 	struct hlist_head want_all_ipv6_list;
12061250 
1207
-	/** @querier_ipv4: the current state of an IGMP querier in the mesh */
1208
-	struct batadv_mcast_querier_state querier_ipv4;
1251
+	/**
1252
+	 * @want_all_rtr4_list: a list of orig_nodes wanting all routable IPv4
1253
+	 *  multicast traffic
1254
+	 */
1255
+	struct hlist_head want_all_rtr4_list;
12091256 
1210
-	/** @querier_ipv6: the current state of an MLD querier in the mesh */
1211
-	struct batadv_mcast_querier_state querier_ipv6;
1257
+	/**
1258
+	 * @want_all_rtr6_list: a list of orig_nodes wanting all routable IPv6
1259
+	 *  multicast traffic
1260
+	 */
1261
+	struct hlist_head want_all_rtr6_list;
12121262 
1213
-	/** @flags: the flags we have last sent in our mcast tvlv */
1214
-	u8 flags;
1215
-
1216
-	/** @enabled: whether the multicast tvlv is currently enabled */
1217
-	unsigned char enabled:1;
1218
-
1219
-	/** @bridged: whether the soft interface has a bridge on top */
1220
-	unsigned char bridged:1;
1263
+	/**
1264
+	 * @mla_flags: flags for the querier, bridge and tvlv state
1265
+	 */
1266
+	struct batadv_mcast_mla_flags mla_flags;
12211267 
12221268 	/**
12231269 	 * @mla_lock: a lock protecting mla_list and mla_flags
....@@ -1235,6 +1281,12 @@
12351281 
12361282 	/** @num_want_all_ipv6: counter for items in want_all_ipv6_list */
12371283 	atomic_t num_want_all_ipv6;
1284
+
1285
+	/** @num_want_all_rtr4: counter for items in want_all_rtr4_list */
1286
+	atomic_t num_want_all_rtr4;
1287
+
1288
+	/** @num_want_all_rtr6: counter for items in want_all_rtr6_list */
1289
+	atomic_t num_want_all_rtr6;
12381290 
12391291 	/**
12401292 	 * @want_lists_lock: lock for protecting modifications to mcasts
....@@ -1440,7 +1492,7 @@
14401492 	/** @unacked_lock: protect unacked_list */
14411493 	spinlock_t unacked_lock;
14421494 
1443
-	/** @last_recv_time: time time (jiffies) a msg was received */
1495
+	/** @last_recv_time: time (jiffies) a msg was received */
14441496 	unsigned long last_recv_time;
14451497 
14461498 	/** @refcount: number of context where the object is used */
....@@ -1515,6 +1567,12 @@
15151567 	struct net_device *soft_iface;
15161568 
15171569 	/**
1570
+	 * @mtu_set_by_user: MTU was set once by user
1571
+	 * protected by rtnl_lock
1572
+	 */
1573
+	int mtu_set_by_user;
1574
+
1575
+	/**
15181576 	 * @bat_counters: mesh internal traffic statistic counters (see
15191577 	 *  batadv_counters)
15201578 	 */
....@@ -1569,6 +1627,12 @@
15691627 	 *  node's sender/originating side
15701628 	 */
15711629 	atomic_t multicast_mode;
1630
+
1631
+	/**
1632
+	 * @multicast_fanout: Maximum number of packet copies to generate for a
1633
+	 *  multicast-to-unicast conversion
1634
+	 */
1635
+	atomic_t multicast_fanout;
15721636 #endif
15731637 
15741638 	/** @orig_interval: OGM broadcast interval in milliseconds */
....@@ -1608,9 +1672,6 @@
16081672 
16091673 	/** @batman_queue_left: number of remaining OGM packet slots */
16101674 	atomic_t batman_queue_left;
1611
-
1612
-	/** @num_ifaces: number of interfaces assigned to this mesh interface */
1613
-	unsigned int num_ifaces;
16141675 
16151676 	/** @mesh_obj: kobject for sysfs mesh subdirectory */
16161677 	struct kobject *mesh_obj;
....@@ -1669,7 +1730,7 @@
16691730 	spinlock_t softif_vlan_list_lock;
16701731 
16711732 #ifdef CONFIG_BATMAN_ADV_BLA
1672
-	/** @bla: bridge loope avoidance data */
1733
+	/** @bla: bridge loop avoidance data */
16731734 	struct batadv_priv_bla bla;
16741735 #endif
16751736 
....@@ -1941,7 +2002,7 @@
19412002  */
19422003 struct batadv_tt_req_node {
19432004 	/**
1944
-	 * @addr: mac address address of the originator this request was sent to
2005
+	 * @addr: mac address of the originator this request was sent to
19452006 	 */
19462007 	u8 addr[ETH_ALEN];
19472008 
....@@ -2194,28 +2255,6 @@
21942255  * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
21952256  */
21962257 struct batadv_algo_orig_ops {
2197
-	/**
2198
-	 * @free: free the resources allocated by the routing algorithm for an
2199
-	 *  orig_node object (optional)
2200
-	 */
2201
-	void (*free)(struct batadv_orig_node *orig_node);
2202
-
2203
-	/**
2204
-	 * @add_if: ask the routing algorithm to apply the needed changes to the
2205
-	 *  orig_node due to a new hard-interface being added into the mesh
2206
-	 *  (optional)
2207
-	 */
2208
-	int (*add_if)(struct batadv_orig_node *orig_node,
2209
-		      unsigned int max_if_num);
2210
-
2211
-	/**
2212
-	 * @del_if: ask the routing algorithm to apply the needed changes to the
2213
-	 *  orig_node due to an hard-interface being removed from the mesh
2214
-	 *  (optional)
2215
-	 */
2216
-	int (*del_if)(struct batadv_orig_node *orig_node,
2217
-		      unsigned int max_if_num, unsigned int del_if_num);
2218
-
22192258 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
22202259 	/** @print: print the originator table (optional) */
22212260 	void (*print)(struct batadv_priv *priv, struct seq_file *seq,