~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/net/batman-adv/types.h

Version: ~ [ linux-6.2-rc3 ] ~ [ linux-6.1.5 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.87 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.162 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.228 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.269 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.302 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.302 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* Copyright (C) 2007-2016  B.A.T.M.A.N. contributors:
  2  *
  3  * Marek Lindner, Simon Wunderlich
  4  *
  5  * This program is free software; you can redistribute it and/or
  6  * modify it under the terms of version 2 of the GNU General Public
  7  * License as published by the Free Software Foundation.
  8  *
  9  * This program is distributed in the hope that it will be useful, but
 10  * WITHOUT ANY WARRANTY; without even the implied warranty of
 11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 12  * General Public License for more details.
 13  *
 14  * You should have received a copy of the GNU General Public License
 15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
 16  */
 17 
 18 #ifndef _NET_BATMAN_ADV_TYPES_H_
 19 #define _NET_BATMAN_ADV_TYPES_H_
 20 
 21 #ifndef _NET_BATMAN_ADV_MAIN_H_
 22 #error only "main.h" can be included directly
 23 #endif
 24 
 25 #include <linux/average.h>
 26 #include <linux/bitops.h>
 27 #include <linux/compiler.h>
 28 #include <linux/if_ether.h>
 29 #include <linux/kref.h>
 30 #include <linux/netdevice.h>
 31 #include <linux/netlink.h>
 32 #include <linux/sched.h> /* for linux/wait.h */
 33 #include <linux/spinlock.h>
 34 #include <linux/types.h>
 35 #include <linux/wait.h>
 36 #include <linux/workqueue.h>
 37 #include <uapi/linux/batman_adv.h>
 38 
 39 #include "packet.h"
 40 
 41 struct seq_file;
 42 
 43 #ifdef CONFIG_BATMAN_ADV_DAT
 44 
 45 /**
 46  * batadv_dat_addr_t - it is the type used for all DHT addresses. If it is
 47  *  changed, BATADV_DAT_ADDR_MAX is changed as well.
 48  *
 49  * *Please be careful: batadv_dat_addr_t must be UNSIGNED*
 50  */
 51 #define batadv_dat_addr_t u16
 52 
 53 #endif /* CONFIG_BATMAN_ADV_DAT */
 54 
 55 /**
 56  * enum batadv_dhcp_recipient - dhcp destination
 57  * @BATADV_DHCP_NO: packet is not a dhcp message
 58  * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server
 59  * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client
 60  */
 61 enum batadv_dhcp_recipient {
 62         BATADV_DHCP_NO = 0,
 63         BATADV_DHCP_TO_SERVER,
 64         BATADV_DHCP_TO_CLIENT,
 65 };
 66 
 67 /**
 68  * BATADV_TT_REMOTE_MASK - bitmask selecting the flags that are sent over the
 69  *  wire only
 70  */
 71 #define BATADV_TT_REMOTE_MASK   0x00FF
 72 
 73 /**
 74  * BATADV_TT_SYNC_MASK - bitmask of the flags that need to be kept in sync
 75  *  among the nodes. These flags are used to compute the global/local CRC
 76  */
 77 #define BATADV_TT_SYNC_MASK     0x00F0
 78 
 79 /**
 80  * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data
 81  * @ogm_buff: buffer holding the OGM packet
 82  * @ogm_buff_len: length of the OGM packet buffer
 83  * @ogm_seqno: OGM sequence number - used to identify each OGM
 84  */
 85 struct batadv_hard_iface_bat_iv {
 86         unsigned char *ogm_buff;
 87         int ogm_buff_len;
 88         atomic_t ogm_seqno;
 89 };
 90 
 91 /**
 92  * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V
 93  * @BATADV_FULL_DUPLEX: tells if the connection over this link is full-duplex
 94  * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that no
 95  *  throughput data is available for this interface and that default values are
 96  *  assumed.
 97  */
 98 enum batadv_v_hard_iface_flags {
 99         BATADV_FULL_DUPLEX      = BIT(0),
100         BATADV_WARNING_DEFAULT  = BIT(1),
101 };
102 
103 /**
104  * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data
105  * @elp_interval: time interval between two ELP transmissions
106  * @elp_seqno: current ELP sequence number
107  * @elp_skb: base skb containing the ELP message to send
108  * @elp_wq: workqueue used to schedule ELP transmissions
109  * @throughput_override: throughput override to disable link auto-detection
110  * @flags: interface specific flags
111  */
112 struct batadv_hard_iface_bat_v {
113         atomic_t elp_interval;
114         atomic_t elp_seqno;
115         struct sk_buff *elp_skb;
116         struct delayed_work elp_wq;
117         atomic_t throughput_override;
118         u8 flags;
119 };
120 
121 /**
122  * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration
123  *  of a batadv_hard_iface
124  * @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device
125  * @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device
126  * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device
127  * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi device
128  */
129 enum batadv_hard_iface_wifi_flags {
130         BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0),
131         BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1),
132         BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2),
133         BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3),
134 };
135 
136 /**
137  * struct batadv_hard_iface - network device known to batman-adv
138  * @list: list node for batadv_hardif_list
139  * @if_num: identificator of the interface
140  * @if_status: status of the interface for batman-adv
141  * @num_bcasts: number of payload re-broadcasts on this interface (ARQ)
142  * @wifi_flags: flags whether this is (directly or indirectly) a wifi interface
143  * @net_dev: pointer to the net_device
144  * @hardif_obj: kobject of the per interface sysfs "mesh" directory
145  * @refcount: number of contexts the object is used
146  * @batman_adv_ptype: packet type describing packets that should be processed by
147  *  batman-adv for this interface
148  * @soft_iface: the batman-adv interface which uses this network interface
149  * @rcu: struct used for freeing in an RCU-safe manner
150  * @bat_iv: per hard-interface B.A.T.M.A.N. IV data
151  * @bat_v: per hard-interface B.A.T.M.A.N. V data
152  * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
153  * @neigh_list: list of unique single hop neighbors via this interface
154  * @neigh_list_lock: lock protecting neigh_list
155  */
156 struct batadv_hard_iface {
157         struct list_head list;
158         s16 if_num;
159         char if_status;
160         u8 num_bcasts;
161         u32 wifi_flags;
162         struct net_device *net_dev;
163         struct kobject *hardif_obj;
164         struct kref refcount;
165         struct packet_type batman_adv_ptype;
166         struct net_device *soft_iface;
167         struct rcu_head rcu;
168         struct batadv_hard_iface_bat_iv bat_iv;
169 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
170         struct batadv_hard_iface_bat_v bat_v;
171 #endif
172         struct dentry *debug_dir;
173         struct hlist_head neigh_list;
174         /* neigh_list_lock protects: neigh_list */
175         spinlock_t neigh_list_lock;
176 };
177 
178 /**
179  * struct batadv_orig_ifinfo - originator info per outgoing interface
180  * @list: list node for orig_node::ifinfo_list
181  * @if_outgoing: pointer to outgoing hard-interface
182  * @router: router that should be used to reach this originator
183  * @last_real_seqno: last and best known sequence number
184  * @last_ttl: ttl of last received packet
185  * @last_seqno_forwarded: seqno of the OGM which was forwarded last
186  * @batman_seqno_reset: time when the batman seqno window was reset
187  * @refcount: number of contexts the object is used
188  * @rcu: struct used for freeing in an RCU-safe manner
189  */
190 struct batadv_orig_ifinfo {
191         struct hlist_node list;
192         struct batadv_hard_iface *if_outgoing;
193         struct batadv_neigh_node __rcu *router; /* rcu protected pointer */
194         u32 last_real_seqno;
195         u8 last_ttl;
196         u32 last_seqno_forwarded;
197         unsigned long batman_seqno_reset;
198         struct kref refcount;
199         struct rcu_head rcu;
200 };
201 
202 /**
203  * struct batadv_frag_table_entry - head in the fragment buffer table
204  * @fragment_list: head of list with fragments
205  * @lock: lock to protect the list of fragments
206  * @timestamp: time (jiffie) of last received fragment
207  * @seqno: sequence number of the fragments in the list
208  * @size: accumulated size of packets in list
209  * @total_size: expected size of the assembled packet
210  */
211 struct batadv_frag_table_entry {
212         struct hlist_head fragment_list;
213         spinlock_t lock; /* protects fragment_list */
214         unsigned long timestamp;
215         u16 seqno;
216         u16 size;
217         u16 total_size;
218 };
219 
220 /**
221  * struct batadv_frag_list_entry - entry in a list of fragments
222  * @list: list node information
223  * @skb: fragment
224  * @no: fragment number in the set
225  */
226 struct batadv_frag_list_entry {
227         struct hlist_node list;
228         struct sk_buff *skb;
229         u8 no;
230 };
231 
232 /**
233  * struct batadv_vlan_tt - VLAN specific TT attributes
234  * @crc: CRC32 checksum of the entries belonging to this vlan
235  * @num_entries: number of TT entries for this VLAN
236  */
237 struct batadv_vlan_tt {
238         u32 crc;
239         atomic_t num_entries;
240 };
241 
242 /**
243  * struct batadv_orig_node_vlan - VLAN specific data per orig_node
244  * @vid: the VLAN identifier
245  * @tt: VLAN specific TT attributes
246  * @list: list node for orig_node::vlan_list
247  * @refcount: number of context where this object is currently in use
248  * @rcu: struct used for freeing in a RCU-safe manner
249  */
250 struct batadv_orig_node_vlan {
251         unsigned short vid;
252         struct batadv_vlan_tt tt;
253         struct hlist_node list;
254         struct kref refcount;
255         struct rcu_head rcu;
256 };
257 
258 /**
259  * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
260  * @bcast_own: set of bitfields (one per hard-interface) where each one counts
261  * the number of our OGMs this orig_node rebroadcasted "back" to us  (relative
262  * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long.
263  * @bcast_own_sum: sum of bcast_own
264  * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
265  *  neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
266  */
267 struct batadv_orig_bat_iv {
268         unsigned long *bcast_own;
269         u8 *bcast_own_sum;
270         /* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
271          * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
272          */
273         spinlock_t ogm_cnt_lock;
274 };
275 
276 /**
277  * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
278  * @orig: originator ethernet address
279  * @ifinfo_list: list for routers per outgoing interface
280  * @last_bonding_candidate: pointer to last ifinfo of last used router
281  * @dat_addr: address of the orig node in the distributed hash
282  * @last_seen: time when last packet from this node was received
283  * @bcast_seqno_reset: time when the broadcast seqno window was reset
284  * @mcast_handler_lock: synchronizes mcast-capability and -flag changes
285  * @mcast_flags: multicast flags announced by the orig node
286  * @mcast_want_all_unsnoopables_node: a list node for the
287  *  mcast.want_all_unsnoopables list
288  * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list
289  * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list
290  * @capabilities: announced capabilities of this originator
291  * @capa_initialized: bitfield to remember whether a capability was initialized
292  * @last_ttvn: last seen translation table version number
293  * @tt_buff: last tt changeset this node received from the orig node
294  * @tt_buff_len: length of the last tt changeset this node received from the
295  *  orig node
296  * @tt_buff_lock: lock that protects tt_buff and tt_buff_len
297  * @tt_lock: prevents from updating the table while reading it. Table update is
298  *  made up by two operations (data structure update and metdata -CRC/TTVN-
299  *  recalculation) and they have to be executed atomically in order to avoid
300  *  another thread to read the table/metadata between those.
301  * @bcast_bits: bitfield containing the info which payload broadcast originated
302  *  from this orig node this host already has seen (relative to
303  *  last_bcast_seqno)
304  * @last_bcast_seqno: last broadcast sequence number received by this host
305  * @neigh_list: list of potential next hop neighbor towards this orig node
306  * @neigh_list_lock: lock protecting neigh_list and router
307  * @hash_entry: hlist node for batadv_priv::orig_hash
308  * @bat_priv: pointer to soft_iface this orig node belongs to
309  * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
310  * @refcount: number of contexts the object is used
311  * @rcu: struct used for freeing in an RCU-safe manner
312  * @in_coding_list: list of nodes this orig can hear
313  * @out_coding_list: list of nodes that can hear this orig
314  * @in_coding_list_lock: protects in_coding_list
315  * @out_coding_list_lock: protects out_coding_list
316  * @fragments: array with heads for fragment chains
317  * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
318  *  originator represented by this object
319  * @vlan_list_lock: lock protecting vlan_list
320  * @bat_iv: B.A.T.M.A.N. IV private structure
321  */
322 struct batadv_orig_node {
323         u8 orig[ETH_ALEN];
324         struct hlist_head ifinfo_list;
325         struct batadv_orig_ifinfo *last_bonding_candidate;
326 #ifdef CONFIG_BATMAN_ADV_DAT
327         batadv_dat_addr_t dat_addr;
328 #endif
329         unsigned long last_seen;
330         unsigned long bcast_seqno_reset;
331 #ifdef CONFIG_BATMAN_ADV_MCAST
332         /* synchronizes mcast tvlv specific orig changes */
333         spinlock_t mcast_handler_lock;
334         u8 mcast_flags;
335         struct hlist_node mcast_want_all_unsnoopables_node;
336         struct hlist_node mcast_want_all_ipv4_node;
337         struct hlist_node mcast_want_all_ipv6_node;
338 #endif
339         unsigned long capabilities;
340         unsigned long capa_initialized;
341         atomic_t last_ttvn;
342         unsigned char *tt_buff;
343         s16 tt_buff_len;
344         spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */
345         /* prevents from changing the table while reading it */
346         spinlock_t tt_lock;
347         DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
348         u32 last_bcast_seqno;
349         struct hlist_head neigh_list;
350         /* neigh_list_lock protects: neigh_list, ifinfo_list,
351          * last_bonding_candidate and router
352          */
353         spinlock_t neigh_list_lock;
354         struct hlist_node hash_entry;
355         struct batadv_priv *bat_priv;
356         /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
357         spinlock_t bcast_seqno_lock;
358         struct kref refcount;
359         struct rcu_head rcu;
360 #ifdef CONFIG_BATMAN_ADV_NC
361         struct list_head in_coding_list;
362         struct list_head out_coding_list;
363         spinlock_t in_coding_list_lock; /* Protects in_coding_list */
364         spinlock_t out_coding_list_lock; /* Protects out_coding_list */
365 #endif
366         struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
367         struct hlist_head vlan_list;
368         spinlock_t vlan_list_lock; /* protects vlan_list */
369         struct batadv_orig_bat_iv bat_iv;
370 };
371 
372 /**
373  * enum batadv_orig_capabilities - orig node capabilities
374  * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled
375  * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled
376  * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability
377  * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability
378  *  (= orig node announces a tvlv of type BATADV_TVLV_MCAST)
379  */
380 enum batadv_orig_capabilities {
381         BATADV_ORIG_CAPA_HAS_DAT,
382         BATADV_ORIG_CAPA_HAS_NC,
383         BATADV_ORIG_CAPA_HAS_TT,
384         BATADV_ORIG_CAPA_HAS_MCAST,
385 };
386 
387 /**
388  * struct batadv_gw_node - structure for orig nodes announcing gw capabilities
389  * @list: list node for batadv_priv_gw::list
390  * @orig_node: pointer to corresponding orig node
391  * @bandwidth_down: advertised uplink download bandwidth
392  * @bandwidth_up: advertised uplink upload bandwidth
393  * @refcount: number of contexts the object is used
394  * @rcu: struct used for freeing in an RCU-safe manner
395  */
396 struct batadv_gw_node {
397         struct hlist_node list;
398         struct batadv_orig_node *orig_node;
399         u32 bandwidth_down;
400         u32 bandwidth_up;
401         struct kref refcount;
402         struct rcu_head rcu;
403 };
404 
405 DECLARE_EWMA(throughput, 1024, 8)
406 
407 /**
408  * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor
409  *  information
410  * @throughput: ewma link throughput towards this neighbor
411  * @elp_interval: time interval between two ELP transmissions
412  * @elp_latest_seqno: latest and best known ELP sequence number
413  * @last_unicast_tx: when the last unicast packet has been sent to this neighbor
414  * @metric_work: work queue callback item for metric update
415  */
416 struct batadv_hardif_neigh_node_bat_v {
417         struct ewma_throughput throughput;
418         u32 elp_interval;
419         u32 elp_latest_seqno;
420         unsigned long last_unicast_tx;
421         struct work_struct metric_work;
422 };
423 
424 /**
425  * struct batadv_hardif_neigh_node - unique neighbor per hard-interface
426  * @list: list node for batadv_hard_iface::neigh_list
427  * @addr: the MAC address of the neighboring interface
428  * @orig: the address of the originator this neighbor node belongs to
429  * @if_incoming: pointer to incoming hard-interface
430  * @last_seen: when last packet via this neighbor was received
431  * @bat_v: B.A.T.M.A.N. V private data
432  * @refcount: number of contexts the object is used
433  * @rcu: struct used for freeing in a RCU-safe manner
434  */
435 struct batadv_hardif_neigh_node {
436         struct hlist_node list;
437         u8 addr[ETH_ALEN];
438         u8 orig[ETH_ALEN];
439         struct batadv_hard_iface *if_incoming;
440         unsigned long last_seen;
441 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
442         struct batadv_hardif_neigh_node_bat_v bat_v;
443 #endif
444         struct kref refcount;
445         struct rcu_head rcu;
446 };
447 
448 /**
449  * struct batadv_neigh_node - structure for single hops neighbors
450  * @list: list node for batadv_orig_node::neigh_list
451  * @orig_node: pointer to corresponding orig_node
452  * @addr: the MAC address of the neighboring interface
453  * @ifinfo_list: list for routing metrics per outgoing interface
454  * @ifinfo_lock: lock protecting private ifinfo members and list
455  * @if_incoming: pointer to incoming hard-interface
456  * @last_seen: when last packet via this neighbor was received
457  * @hardif_neigh: hardif_neigh of this neighbor
458  * @refcount: number of contexts the object is used
459  * @rcu: struct used for freeing in an RCU-safe manner
460  */
461 struct batadv_neigh_node {
462         struct hlist_node list;
463         struct batadv_orig_node *orig_node;
464         u8 addr[ETH_ALEN];
465         struct hlist_head ifinfo_list;
466         spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */
467         struct batadv_hard_iface *if_incoming;
468         unsigned long last_seen;
469         struct batadv_hardif_neigh_node *hardif_neigh;
470         struct kref refcount;
471         struct rcu_head rcu;
472 };
473 
474 /**
475  * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing
476  *  interface for B.A.T.M.A.N. IV
477  * @tq_recv: ring buffer of received TQ values from this neigh node
478  * @tq_index: ring buffer index
479  * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv)
480  * @real_bits: bitfield containing the number of OGMs received from this neigh
481  *  node (relative to orig_node->last_real_seqno)
482  * @real_packet_count: counted result of real_bits
483  */
484 struct batadv_neigh_ifinfo_bat_iv {
485         u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE];
486         u8 tq_index;
487         u8 tq_avg;
488         DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE);
489         u8 real_packet_count;
490 };
491 
492 /**
493  * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing
494  *  interface for B.A.T.M.A.N. V
495  * @throughput: last throughput metric received from originator via this neigh
496  * @last_seqno: last sequence number known for this neighbor
497  */
498 struct batadv_neigh_ifinfo_bat_v {
499         u32 throughput;
500         u32 last_seqno;
501 };
502 
503 /**
504  * struct batadv_neigh_ifinfo - neighbor information per outgoing interface
505  * @list: list node for batadv_neigh_node::ifinfo_list
506  * @if_outgoing: pointer to outgoing hard-interface
507  * @bat_iv: B.A.T.M.A.N. IV private structure
508  * @bat_v: B.A.T.M.A.N. V private data
509  * @last_ttl: last received ttl from this neigh node
510  * @refcount: number of contexts the object is used
511  * @rcu: struct used for freeing in a RCU-safe manner
512  */
513 struct batadv_neigh_ifinfo {
514         struct hlist_node list;
515         struct batadv_hard_iface *if_outgoing;
516         struct batadv_neigh_ifinfo_bat_iv bat_iv;
517 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
518         struct batadv_neigh_ifinfo_bat_v bat_v;
519 #endif
520         u8 last_ttl;
521         struct kref refcount;
522         struct rcu_head rcu;
523 };
524 
525 #ifdef CONFIG_BATMAN_ADV_BLA
526 
527 /**
528  * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression
529  * @orig: mac address of orig node orginating the broadcast
530  * @crc: crc32 checksum of broadcast payload
531  * @entrytime: time when the broadcast packet was received
532  */
533 struct batadv_bcast_duplist_entry {
534         u8 orig[ETH_ALEN];
535         __be32 crc;
536         unsigned long entrytime;
537 };
538 #endif
539 
540 /**
541  * enum batadv_counters - indices for traffic counters
542  * @BATADV_CNT_TX: transmitted payload traffic packet counter
543  * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter
544  * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter
545  * @BATADV_CNT_RX: received payload traffic packet counter
546  * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter
547  * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter
548  * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter
549  * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter
550  * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter
551  * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter
552  * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter
553  * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter
554  * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter
555  * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter
556  * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter
557  * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter
558  * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter
559  * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter
560  * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter
561  * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter
562  * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter
563  * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter
564  * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter
565  * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter
566  * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter
567  * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter
568  * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter
569  * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet
570  *  counter
571  * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter
572  * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter
573  * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter
574  * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter
575  * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding
576  * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter
577  * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter
578  * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet
579  *  counter
580  * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc
581  *  mode.
582  * @BATADV_CNT_NUM: number of traffic counters
583  */
584 enum batadv_counters {
585         BATADV_CNT_TX,
586         BATADV_CNT_TX_BYTES,
587         BATADV_CNT_TX_DROPPED,
588         BATADV_CNT_RX,
589         BATADV_CNT_RX_BYTES,
590         BATADV_CNT_FORWARD,
591         BATADV_CNT_FORWARD_BYTES,
592         BATADV_CNT_MGMT_TX,
593         BATADV_CNT_MGMT_TX_BYTES,
594         BATADV_CNT_MGMT_RX,
595         BATADV_CNT_MGMT_RX_BYTES,
596         BATADV_CNT_FRAG_TX,
597         BATADV_CNT_FRAG_TX_BYTES,
598         BATADV_CNT_FRAG_RX,
599         BATADV_CNT_FRAG_RX_BYTES,
600         BATADV_CNT_FRAG_FWD,
601         BATADV_CNT_FRAG_FWD_BYTES,
602         BATADV_CNT_TT_REQUEST_TX,
603         BATADV_CNT_TT_REQUEST_RX,
604         BATADV_CNT_TT_RESPONSE_TX,
605         BATADV_CNT_TT_RESPONSE_RX,
606         BATADV_CNT_TT_ROAM_ADV_TX,
607         BATADV_CNT_TT_ROAM_ADV_RX,
608 #ifdef CONFIG_BATMAN_ADV_DAT
609         BATADV_CNT_DAT_GET_TX,
610         BATADV_CNT_DAT_GET_RX,
611         BATADV_CNT_DAT_PUT_TX,
612         BATADV_CNT_DAT_PUT_RX,
613         BATADV_CNT_DAT_CACHED_REPLY_TX,
614 #endif
615 #ifdef CONFIG_BATMAN_ADV_NC
616         BATADV_CNT_NC_CODE,
617         BATADV_CNT_NC_CODE_BYTES,
618         BATADV_CNT_NC_RECODE,
619         BATADV_CNT_NC_RECODE_BYTES,
620         BATADV_CNT_NC_BUFFER,
621         BATADV_CNT_NC_DECODE,
622         BATADV_CNT_NC_DECODE_BYTES,
623         BATADV_CNT_NC_DECODE_FAILED,
624         BATADV_CNT_NC_SNIFFED,
625 #endif
626         BATADV_CNT_NUM,
627 };
628 
629 /**
630  * struct batadv_priv_tt - per mesh interface translation table data
631  * @vn: translation table version number
632  * @ogm_append_cnt: counter of number of OGMs containing the local tt diff
633  * @local_changes: changes registered in an originator interval
634  * @changes_list: tracks tt local changes within an originator interval
635  * @local_hash: local translation table hash table
636  * @global_hash: global translation table hash table
637  * @req_list: list of pending & unanswered tt_requests
638  * @roam_list: list of the last roaming events of each client limiting the
639  *  number of roaming events to avoid route flapping
640  * @changes_list_lock: lock protecting changes_list
641  * @req_list_lock: lock protecting req_list
642  * @roam_list_lock: lock protecting roam_list
643  * @last_changeset: last tt changeset this host has generated
644  * @last_changeset_len: length of last tt changeset this host has generated
645  * @last_changeset_lock: lock protecting last_changeset & last_changeset_len
646  * @commit_lock: prevents from executing a local TT commit while reading the
647  *  local table. The local TT commit is made up by two operations (data
648  *  structure update and metdata -CRC/TTVN- recalculation) and they have to be
649  *  executed atomically in order to avoid another thread to read the
650  *  table/metadata between those.
651  * @work: work queue callback item for translation table purging
652  */
653 struct batadv_priv_tt {
654         atomic_t vn;
655         atomic_t ogm_append_cnt;
656         atomic_t local_changes;
657         struct list_head changes_list;
658         struct batadv_hashtable *local_hash;
659         struct batadv_hashtable *global_hash;
660         struct hlist_head req_list;
661         struct list_head roam_list;
662         spinlock_t changes_list_lock; /* protects changes */
663         spinlock_t req_list_lock; /* protects req_list */
664         spinlock_t roam_list_lock; /* protects roam_list */
665         unsigned char *last_changeset;
666         s16 last_changeset_len;
667         /* protects last_changeset & last_changeset_len */
668         spinlock_t last_changeset_lock;
669         /* prevents from executing a commit while reading the table */
670         spinlock_t commit_lock;
671         struct delayed_work work;
672 };
673 
674 #ifdef CONFIG_BATMAN_ADV_BLA
675 
676 /**
677  * struct batadv_priv_bla - per mesh interface bridge loope avoidance data
678  * @num_requests: number of bla requests in flight
679  * @claim_hash: hash table containing mesh nodes this host has claimed
680  * @backbone_hash: hash table containing all detected backbone gateways
681  * @loopdetect_addr: MAC address used for own loopdetection frames
682  * @loopdetect_lasttime: time when the loopdetection frames were sent
683  * @loopdetect_next: how many periods to wait for the next loopdetect process
684  * @bcast_duplist: recently received broadcast packets array (for broadcast
685  *  duplicate suppression)
686  * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist
687  * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr
688  * @claim_dest: local claim data (e.g. claim group)
689  * @work: work queue callback item for cleanups & bla announcements
690  */
691 struct batadv_priv_bla {
692         atomic_t num_requests;
693         struct batadv_hashtable *claim_hash;
694         struct batadv_hashtable *backbone_hash;
695         u8 loopdetect_addr[ETH_ALEN];
696         unsigned long loopdetect_lasttime;
697         atomic_t loopdetect_next;
698         struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE];
699         int bcast_duplist_curr;
700         /* protects bcast_duplist & bcast_duplist_curr */
701         spinlock_t bcast_duplist_lock;
702         struct batadv_bla_claim_dst claim_dest;
703         struct delayed_work work;
704 };
705 #endif
706 
707 #ifdef CONFIG_BATMAN_ADV_DEBUG
708 
709 /**
710  * struct batadv_priv_debug_log - debug logging data
711  * @log_buff: buffer holding the logs (ring bufer)
712  * @log_start: index of next character to read
713  * @log_end: index of next character to write
714  * @lock: lock protecting log_buff, log_start & log_end
715  * @queue_wait: log reader's wait queue
716  */
717 struct batadv_priv_debug_log {
718         char log_buff[BATADV_LOG_BUF_LEN];
719         unsigned long log_start;
720         unsigned long log_end;
721         spinlock_t lock; /* protects log_buff, log_start and log_end */
722         wait_queue_head_t queue_wait;
723 };
724 #endif
725 
726 /**
727  * struct batadv_priv_gw - per mesh interface gateway data
728  * @gateway_list: list of available gateway nodes
729  * @list_lock: lock protecting gateway_list & curr_gw
730  * @curr_gw: pointer to currently selected gateway node
731  * @mode: gateway operation: off, client or server (see batadv_gw_modes)
732  * @sel_class: gateway selection class (applies if gw_mode client)
733  * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server)
734  * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server)
735  * @reselect: bool indicating a gateway re-selection is in progress
736  */
737 struct batadv_priv_gw {
738         struct hlist_head gateway_list;
739         spinlock_t list_lock; /* protects gateway_list & curr_gw */
740         struct batadv_gw_node __rcu *curr_gw;  /* rcu protected pointer */
741         atomic_t mode;
742         atomic_t sel_class;
743         atomic_t bandwidth_down;
744         atomic_t bandwidth_up;
745         atomic_t reselect;
746 };
747 
748 /**
749  * struct batadv_priv_tvlv - per mesh interface tvlv data
750  * @container_list: list of registered tvlv containers to be sent with each OGM
751  * @handler_list: list of the various tvlv content handlers
752  * @container_list_lock: protects tvlv container list access
753  * @handler_list_lock: protects handler list access
754  */
755 struct batadv_priv_tvlv {
756         struct hlist_head container_list;
757         struct hlist_head handler_list;
758         spinlock_t container_list_lock; /* protects container_list */
759         spinlock_t handler_list_lock; /* protects handler_list */
760 };
761 
762 #ifdef CONFIG_BATMAN_ADV_DAT
763 
764 /**
765  * struct batadv_priv_dat - per mesh interface DAT private data
766  * @addr: node DAT address
767  * @hash: hashtable representing the local ARP cache
768  * @work: work queue callback item for cache purging
769  */
770 struct batadv_priv_dat {
771         batadv_dat_addr_t addr;
772         struct batadv_hashtable *hash;
773         struct delayed_work work;
774 };
775 #endif
776 
777 #ifdef CONFIG_BATMAN_ADV_MCAST
778 /**
779  * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged
780  * @exists: whether a querier exists in the mesh
781  * @shadowing: if a querier exists, whether it is potentially shadowing
782  *  multicast listeners (i.e. querier is behind our own bridge segment)
783  */
784 struct batadv_mcast_querier_state {
785         bool exists;
786         bool shadowing;
787 };
788 
789 /**
790  * struct batadv_priv_mcast - per mesh interface mcast data
791  * @mla_list: list of multicast addresses we are currently announcing via TT
792  * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable
793  *  multicast traffic
794  * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic
795  * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic
796  * @querier_ipv4: the current state of an IGMP querier in the mesh
797  * @querier_ipv6: the current state of an MLD querier in the mesh
798  * @flags: the flags we have last sent in our mcast tvlv
799  * @enabled: whether the multicast tvlv is currently enabled
800  * @bridged: whether the soft interface has a bridge on top
801  * @num_disabled: number of nodes that have no mcast tvlv
802  * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic
803  * @num_want_all_ipv4: counter for items in want_all_ipv4_list
804  * @num_want_all_ipv6: counter for items in want_all_ipv6_list
805  * @want_lists_lock: lock for protecting modifications to mcast want lists
806  *  (traversals are rcu-locked)
807  * @work: work queue callback item for multicast TT and TVLV updates
808  */
809 struct batadv_priv_mcast {
810         struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */
811         struct hlist_head want_all_unsnoopables_list;
812         struct hlist_head want_all_ipv4_list;
813         struct hlist_head want_all_ipv6_list;
814         struct batadv_mcast_querier_state querier_ipv4;
815         struct batadv_mcast_querier_state querier_ipv6;
816         u8 flags;
817         bool enabled;
818         bool bridged;
819         atomic_t num_disabled;
820         atomic_t num_want_all_unsnoopables;
821         atomic_t num_want_all_ipv4;
822         atomic_t num_want_all_ipv6;
823         /* protects want_all_{unsnoopables,ipv4,ipv6}_list */
824         spinlock_t want_lists_lock;
825         struct delayed_work work;
826 };
827 #endif
828 
829 /**
830  * struct batadv_priv_nc - per mesh interface network coding private data
831  * @work: work queue callback item for cleanup
832  * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs
833  * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq
834  * @max_fwd_delay: maximum packet forward delay to allow coding of packets
835  * @max_buffer_time: buffer time for sniffed packets used to decoding
836  * @timestamp_fwd_flush: timestamp of last forward packet queue flush
837  * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge
838  * @coding_hash: Hash table used to buffer skbs while waiting for another
839  *  incoming skb to code it with. Skbs are added to the buffer just before being
840  *  forwarded in routing.c
841  * @decoding_hash: Hash table used to buffer skbs that might be needed to decode
842  *  a received coded skb. The buffer is used for 1) skbs arriving on the
843  *  soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs
844  *  forwarded by batman-adv.
845  */
846 struct batadv_priv_nc {
847         struct delayed_work work;
848         struct dentry *debug_dir;
849         u8 min_tq;
850         u32 max_fwd_delay;
851         u32 max_buffer_time;
852         unsigned long timestamp_fwd_flush;
853         unsigned long timestamp_sniffed_purge;
854         struct batadv_hashtable *coding_hash;
855         struct batadv_hashtable *decoding_hash;
856 };
857 
858 /**
859  * struct batadv_tp_unacked - unacked packet meta-information
860  * @seqno: seqno of the unacked packet
861  * @len: length of the packet
862  * @list: list node for batadv_tp_vars::unacked_list
863  *
864  * This struct is supposed to represent a buffer unacked packet. However, since
865  * the purpose of the TP meter is to count the traffic only, there is no need to
866  * store the entire sk_buff, the starting offset and the length are enough
867  */
868 struct batadv_tp_unacked {
869         u32 seqno;
870         u16 len;
871         struct list_head list;
872 };
873 
874 /**
875  * enum batadv_tp_meter_role - Modus in tp meter session
876  * @BATADV_TP_RECEIVER: Initialized as receiver
877  * @BATADV_TP_SENDER: Initialized as sender
878  */
879 enum batadv_tp_meter_role {
880         BATADV_TP_RECEIVER,
881         BATADV_TP_SENDER
882 };
883 
884 /**
885  * struct batadv_tp_vars - tp meter private variables per session
886  * @list: list node for bat_priv::tp_list
887  * @timer: timer for ack (receiver) and retry (sender)
888  * @bat_priv: pointer to the mesh object
889  * @start_time: start time in jiffies
890  * @other_end: mac address of remote
891  * @role: receiver/sender modi
892  * @sending: sending binary semaphore: 1 if sending, 0 is not
893  * @reason: reason for a stopped session
894  * @finish_work: work item for the finishing procedure
895  * @test_length: test length in milliseconds
896  * @session: TP session identifier
897  * @icmp_uid: local ICMP "socket" index
898  * @dec_cwnd: decimal part of the cwnd used during linear growth
899  * @cwnd: current size of the congestion window
900  * @cwnd_lock: lock do protect @cwnd & @dec_cwnd
901  * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the
902  *  connection switches to the Congestion Avoidance state
903  * @last_acked: last acked byte
904  * @last_sent: last sent byte, not yet acked
905  * @tot_sent: amount of data sent/ACKed so far
906  * @dup_acks: duplicate ACKs counter
907  * @fast_recovery: true if in Fast Recovery mode
908  * @recover: last sent seqno when entering Fast Recovery
909  * @rto: sender timeout
910  * @srtt: smoothed RTT scaled by 2^3
911  * @rttvar: RTT variation scaled by 2^2
912  * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout
913  * @prerandom_offset: offset inside the prerandom buffer
914  * @prerandom_lock: spinlock protecting access to prerandom_offset
915  * @last_recv: last in-order received packet
916  * @unacked_list: list of unacked packets (meta-info only)
917  * @unacked_lock: protect unacked_list
918  * @last_recv_time: time time (jiffies) a msg was received
919  * @refcount: number of context where the object is used
920  * @rcu: struct used for freeing in an RCU-safe manner
921  */
922 struct batadv_tp_vars {
923         struct hlist_node list;
924         struct timer_list timer;
925         struct batadv_priv *bat_priv;
926         unsigned long start_time;
927         u8 other_end[ETH_ALEN];
928         enum batadv_tp_meter_role role;
929         atomic_t sending;
930         enum batadv_tp_meter_reason reason;
931         struct delayed_work finish_work;
932         u32 test_length;
933         u8 session[2];
934         u8 icmp_uid;
935 
936         /* sender variables */
937         u16 dec_cwnd;
938         u32 cwnd;
939         spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */
940         u32 ss_threshold;
941         atomic_t last_acked;
942         u32 last_sent;
943         atomic64_t tot_sent;
944         atomic_t dup_acks;
945         bool fast_recovery;
946         u32 recover;
947         u32 rto;
948         u32 srtt;
949         u32 rttvar;
950         wait_queue_head_t more_bytes;
951         u32 prerandom_offset;
952         spinlock_t prerandom_lock; /* Protects prerandom_offset */
953 
954         /* receiver variables */
955         u32 last_recv;
956         struct list_head unacked_list;
957         spinlock_t unacked_lock; /* Protects unacked_list */
958         unsigned long last_recv_time;
959         struct kref refcount;
960         struct rcu_head rcu;
961 };
962 
963 /**
964  * struct batadv_softif_vlan - per VLAN attributes set
965  * @bat_priv: pointer to the mesh object
966  * @vid: VLAN identifier
967  * @kobj: kobject for sysfs vlan subdirectory
968  * @ap_isolation: AP isolation state
969  * @tt: TT private attributes (VLAN specific)
970  * @list: list node for bat_priv::softif_vlan_list
971  * @refcount: number of context where this object is currently in use
972  * @rcu: struct used for freeing in a RCU-safe manner
973  */
974 struct batadv_softif_vlan {
975         struct batadv_priv *bat_priv;
976         unsigned short vid;
977         struct kobject *kobj;
978         atomic_t ap_isolation;          /* boolean */
979         struct batadv_vlan_tt tt;
980         struct hlist_node list;
981         struct kref refcount;
982         struct rcu_head rcu;
983 };
984 
985 /**
986  * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data
987  * @ogm_buff: buffer holding the OGM packet
988  * @ogm_buff_len: length of the OGM packet buffer
989  * @ogm_seqno: OGM sequence number - used to identify each OGM
990  * @ogm_wq: workqueue used to schedule OGM transmissions
991  */
992 struct batadv_priv_bat_v {
993         unsigned char *ogm_buff;
994         int ogm_buff_len;
995         atomic_t ogm_seqno;
996         struct delayed_work ogm_wq;
997 };
998 
999 /**
1000  * struct batadv_priv - per mesh interface data
1001  * @mesh_state: current status of the mesh (inactive/active/deactivating)
1002  * @soft_iface: net device which holds this struct as private data
1003  * @stats: structure holding the data for the ndo_get_stats() call
1004  * @bat_counters: mesh internal traffic statistic counters (see batadv_counters)
1005  * @aggregated_ogms: bool indicating whether OGM aggregation is enabled
1006  * @bonding: bool indicating whether traffic bonding is enabled
1007  * @fragmentation: bool indicating whether traffic fragmentation is enabled
1008  * @packet_size_max: max packet size that can be transmitted via
1009  *  multiple fragmented skbs or a single frame if fragmentation is disabled
1010  * @frag_seqno: incremental counter to identify chains of egress fragments
1011  * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is
1012  *  enabled
1013  * @distributed_arp_table: bool indicating whether distributed ARP table is
1014  *  enabled
1015  * @multicast_mode: Enable or disable multicast optimizations on this node's
1016  *  sender/originating side
1017  * @orig_interval: OGM broadcast interval in milliseconds
1018  * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop
1019  * @log_level: configured log level (see batadv_dbg_level)
1020  * @isolation_mark: the skb->mark value used to match packets for AP isolation
1021  * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be used
1022  *  for the isolation mark
1023  * @bcast_seqno: last sent broadcast packet sequence number
1024  * @bcast_queue_left: number of remaining buffered broadcast packet slots
1025  * @batman_queue_left: number of remaining OGM packet slots
1026  * @num_ifaces: number of interfaces assigned to this mesh interface
1027  * @mesh_obj: kobject for sysfs mesh subdirectory
1028  * @debug_dir: dentry for debugfs batman-adv subdirectory
1029  * @forw_bat_list: list of aggregated OGMs that will be forwarded
1030  * @forw_bcast_list: list of broadcast packets that will be rebroadcasted
1031  * @tp_list: list of tp sessions
1032  * @tp_num: number of currently active tp sessions
1033  * @orig_hash: hash table containing mesh participants (orig nodes)
1034  * @forw_bat_list_lock: lock protecting forw_bat_list
1035  * @forw_bcast_list_lock: lock protecting forw_bcast_list
1036  * @tp_list_lock: spinlock protecting @tp_list
1037  * @orig_work: work queue callback item for orig node purging
1038  * @primary_if: one of the hard-interfaces assigned to this mesh interface
1039  *  becomes the primary interface
1040  * @algo_ops: routing algorithm used by this mesh interface
1041  * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
1042  *  of the mesh interface represented by this object
1043  * @softif_vlan_list_lock: lock protecting softif_vlan_list
1044  * @bla: bridge loope avoidance data
1045  * @debug_log: holding debug logging relevant data
1046  * @gw: gateway data
1047  * @tt: translation table data
1048  * @tvlv: type-version-length-value data
1049  * @dat: distributed arp table data
1050  * @mcast: multicast data
1051  * @network_coding: bool indicating whether network coding is enabled
1052  * @nc: network coding data
1053  * @bat_v: B.A.T.M.A.N. V per soft-interface private data
1054  */
1055 struct batadv_priv {
1056         atomic_t mesh_state;
1057         struct net_device *soft_iface;
1058         struct net_device_stats stats;
1059         u64 __percpu *bat_counters; /* Per cpu counters */
1060         atomic_t aggregated_ogms;
1061         atomic_t bonding;
1062         atomic_t fragmentation;
1063         atomic_t packet_size_max;
1064         atomic_t frag_seqno;
1065 #ifdef CONFIG_BATMAN_ADV_BLA
1066         atomic_t bridge_loop_avoidance;
1067 #endif
1068 #ifdef CONFIG_BATMAN_ADV_DAT
1069         atomic_t distributed_arp_table;
1070 #endif
1071 #ifdef CONFIG_BATMAN_ADV_MCAST
1072         atomic_t multicast_mode;
1073 #endif
1074         atomic_t orig_interval;
1075         atomic_t hop_penalty;
1076 #ifdef CONFIG_BATMAN_ADV_DEBUG
1077         atomic_t log_level;
1078 #endif
1079         u32 isolation_mark;
1080         u32 isolation_mark_mask;
1081         atomic_t bcast_seqno;
1082         atomic_t bcast_queue_left;
1083         atomic_t batman_queue_left;
1084         char num_ifaces;
1085         struct kobject *mesh_obj;
1086         struct dentry *debug_dir;
1087         struct hlist_head forw_bat_list;
1088         struct hlist_head forw_bcast_list;
1089         struct hlist_head tp_list;
1090         struct batadv_hashtable *orig_hash;
1091         spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
1092         spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */
1093         spinlock_t tp_list_lock; /* protects tp_list */
1094         atomic_t tp_num;
1095         struct delayed_work orig_work;
1096         struct batadv_hard_iface __rcu *primary_if;  /* rcu protected pointer */
1097         struct batadv_algo_ops *algo_ops;
1098         struct hlist_head softif_vlan_list;
1099         spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
1100 #ifdef CONFIG_BATMAN_ADV_BLA
1101         struct batadv_priv_bla bla;
1102 #endif
1103 #ifdef CONFIG_BATMAN_ADV_DEBUG
1104         struct batadv_priv_debug_log *debug_log;
1105 #endif
1106         struct batadv_priv_gw gw;
1107         struct batadv_priv_tt tt;
1108         struct batadv_priv_tvlv tvlv;
1109 #ifdef CONFIG_BATMAN_ADV_DAT
1110         struct batadv_priv_dat dat;
1111 #endif
1112 #ifdef CONFIG_BATMAN_ADV_MCAST
1113         struct batadv_priv_mcast mcast;
1114 #endif
1115 #ifdef CONFIG_BATMAN_ADV_NC
1116         atomic_t network_coding;
1117         struct batadv_priv_nc nc;
1118 #endif /* CONFIG_BATMAN_ADV_NC */
1119 #ifdef CONFIG_BATMAN_ADV_BATMAN_V
1120         struct batadv_priv_bat_v bat_v;
1121 #endif
1122 };
1123 
1124 /**
1125  * struct batadv_socket_client - layer2 icmp socket client data
1126  * @queue_list: packet queue for packets destined for this socket client
1127  * @queue_len: number of packets in the packet queue (queue_list)
1128  * @index: socket client's index in the batadv_socket_client_hash
1129  * @lock: lock protecting queue_list, queue_len & index
1130  * @queue_wait: socket client's wait queue
1131  * @bat_priv: pointer to soft_iface this client belongs to
1132  */
1133 struct batadv_socket_client {
1134         struct list_head queue_list;
1135         unsigned int queue_len;
1136         unsigned char index;
1137         spinlock_t lock; /* protects queue_list, queue_len & index */
1138         wait_queue_head_t queue_wait;
1139         struct batadv_priv *bat_priv;
1140 };
1141 
1142 /**
1143  * struct batadv_socket_packet - layer2 icmp packet for socket client
1144  * @list: list node for batadv_socket_client::queue_list
1145  * @icmp_len: size of the layer2 icmp packet
1146  * @icmp_packet: layer2 icmp packet
1147  */
1148 struct batadv_socket_packet {
1149         struct list_head list;
1150         size_t icmp_len;
1151         u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE];
1152 };
1153 
1154 #ifdef CONFIG_BATMAN_ADV_BLA
1155 
1156 /**
1157  * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN
1158  * @orig: originator address of backbone node (mac address of primary iface)
1159  * @vid: vlan id this gateway was detected on
1160  * @hash_entry: hlist node for batadv_priv_bla::backbone_hash
1161  * @bat_priv: pointer to soft_iface this backbone gateway belongs to
1162  * @lasttime: last time we heard of this backbone gw
1163  * @wait_periods: grace time for bridge forward delays and bla group forming at
1164  *  bootup phase - no bcast traffic is formwared until it has elapsed
1165  * @request_sent: if this bool is set to true we are out of sync with this
1166  *  backbone gateway - no bcast traffic is formwared until the situation was
1167  *  resolved
1168  * @crc: crc16 checksum over all claims
1169  * @crc_lock: lock protecting crc
1170  * @report_work: work struct for reporting detected loops
1171  * @refcount: number of contexts the object is used
1172  * @rcu: struct used for freeing in an RCU-safe manner
1173  */
1174 struct batadv_bla_backbone_gw {
1175         u8 orig[ETH_ALEN];
1176         unsigned short vid;
1177         struct hlist_node hash_entry;
1178         struct batadv_priv *bat_priv;
1179         unsigned long lasttime;
1180         atomic_t wait_periods;
1181         atomic_t request_sent;
1182         u16 crc;
1183         spinlock_t crc_lock; /* protects crc */
1184         struct work_struct report_work;
1185         struct kref refcount;
1186         struct rcu_head rcu;
1187 };
1188 
1189 /**
1190  * struct batadv_bla_claim - claimed non-mesh client structure
1191  * @addr: mac address of claimed non-mesh client
1192  * @vid: vlan id this client was detected on
1193  * @backbone_gw: pointer to backbone gw claiming this client
1194  * @backbone_lock: lock protecting backbone_gw pointer
1195  * @lasttime: last time we heard of claim (locals only)
1196  * @hash_entry: hlist node for batadv_priv_bla::claim_hash
1197  * @refcount: number of contexts the object is used
1198  * @rcu: struct used for freeing in an RCU-safe manner
1199  */
1200 struct batadv_bla_claim {
1201         u8 addr[ETH_ALEN];
1202         unsigned short vid;
1203         struct batadv_bla_backbone_gw *backbone_gw;
1204         spinlock_t backbone_lock; /* protects backbone_gw */
1205         unsigned long lasttime;
1206         struct hlist_node hash_entry;
1207         struct rcu_head rcu;
1208         struct kref refcount;
1209 };
1210 #endif
1211 
1212 /**
1213  * struct batadv_tt_common_entry - tt local & tt global common data
1214  * @addr: mac address of non-mesh client
1215  * @vid: VLAN identifier
1216  * @hash_entry: hlist node for batadv_priv_tt::local_hash or for
1217  *  batadv_priv_tt::global_hash
1218  * @flags: various state handling flags (see batadv_tt_client_flags)
1219  * @added_at: timestamp used for purging stale tt common entries
1220  * @refcount: number of contexts the object is used
1221  * @rcu: struct used for freeing in an RCU-safe manner
1222  */
1223 struct batadv_tt_common_entry {
1224         u8 addr[ETH_ALEN];
1225         unsigned short vid;
1226         struct hlist_node hash_entry;
1227         u16 flags;
1228         unsigned long added_at;
1229         struct kref refcount;
1230         struct rcu_head rcu;
1231 };
1232 
1233 /**
1234  * struct batadv_tt_local_entry - translation table local entry data
1235  * @common: general translation table data
1236  * @last_seen: timestamp used for purging stale tt local entries
1237  * @vlan: soft-interface vlan of the entry
1238  */
1239 struct batadv_tt_local_entry {
1240         struct batadv_tt_common_entry common;
1241         unsigned long last_seen;
1242         struct batadv_softif_vlan *vlan;
1243 };
1244 
1245 /**
1246  * struct batadv_tt_global_entry - translation table global entry data
1247  * @common: general translation table data
1248  * @orig_list: list of orig nodes announcing this non-mesh client
1249  * @orig_list_count: number of items in the orig_list
1250  * @list_lock: lock protecting orig_list
1251  * @roam_at: time at which TT_GLOBAL_ROAM was set
1252  */
1253 struct batadv_tt_global_entry {
1254         struct batadv_tt_common_entry common;
1255         struct hlist_head orig_list;
1256         atomic_t orig_list_count;
1257         spinlock_t list_lock;   /* protects orig_list */
1258         unsigned long roam_at;
1259 };
1260 
1261 /**
1262  * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client
1263  * @orig_node: pointer to orig node announcing this non-mesh client
1264  * @ttvn: translation table version number which added the non-mesh client
1265  * @list: list node for batadv_tt_global_entry::orig_list
1266  * @refcount: number of contexts the object is used
1267  * @rcu: struct used for freeing in an RCU-safe manner
1268  */
1269 struct batadv_tt_orig_list_entry {
1270         struct batadv_orig_node *orig_node;
1271         u8 ttvn;
1272         struct hlist_node list;
1273         struct kref refcount;
1274         struct rcu_head rcu;
1275 };
1276 
1277 /**
1278  * struct batadv_tt_change_node - structure for tt changes occurred
1279  * @list: list node for batadv_priv_tt::changes_list
1280  * @change: holds the actual translation table diff data
1281  */
1282 struct batadv_tt_change_node {
1283         struct list_head list;
1284         struct batadv_tvlv_tt_change change;
1285 };
1286 
1287 /**
1288  * struct batadv_tt_req_node - data to keep track of the tt requests in flight
1289  * @addr: mac address address of the originator this request was sent to
1290  * @issued_at: timestamp used for purging stale tt requests
1291  * @refcount: number of contexts the object is used by
1292  * @list: list node for batadv_priv_tt::req_list
1293  */
1294 struct batadv_tt_req_node {
1295         u8 addr[ETH_ALEN];
1296         unsigned long issued_at;
1297         struct kref refcount;
1298         struct hlist_node list;
1299 };
1300 
1301 /**
1302  * struct batadv_tt_roam_node - roaming client data
1303  * @addr: mac address of the client in the roaming phase
1304  * @counter: number of allowed roaming events per client within a single
1305  *  OGM interval (changes are committed with each OGM)
1306  * @first_time: timestamp used for purging stale roaming node entries
1307  * @list: list node for batadv_priv_tt::roam_list
1308  */
1309 struct batadv_tt_roam_node {
1310         u8 addr[ETH_ALEN];
1311         atomic_t counter;
1312         unsigned long first_time;
1313         struct list_head list;
1314 };
1315 
1316 /**
1317  * struct batadv_nc_node - network coding node
1318  * @list: next and prev pointer for the list handling
1319  * @addr: the node's mac address
1320  * @refcount: number of contexts the object is used by
1321  * @rcu: struct used for freeing in an RCU-safe manner
1322  * @orig_node: pointer to corresponding orig node struct
1323  * @last_seen: timestamp of last ogm received from this node
1324  */
1325 struct batadv_nc_node {
1326         struct list_head list;
1327         u8 addr[ETH_ALEN];
1328         struct kref refcount;
1329         struct rcu_head rcu;
1330         struct batadv_orig_node *orig_node;
1331         unsigned long last_seen;
1332 };
1333 
1334 /**
1335  * struct batadv_nc_path - network coding path
1336  * @hash_entry: next and prev pointer for the list handling
1337  * @rcu: struct used for freeing in an RCU-safe manner
1338  * @refcount: number of contexts the object is used by
1339  * @packet_list: list of buffered packets for this path
1340  * @packet_list_lock: access lock for packet list
1341  * @next_hop: next hop (destination) of path
1342  * @prev_hop: previous hop (source) of path
1343  * @last_valid: timestamp for last validation of path
1344  */
1345 struct batadv_nc_path {
1346         struct hlist_node hash_entry;
1347         struct rcu_head rcu;
1348         struct kref refcount;
1349         struct list_head packet_list;
1350         spinlock_t packet_list_lock; /* Protects packet_list */
1351         u8 next_hop[ETH_ALEN];
1352         u8 prev_hop[ETH_ALEN];
1353         unsigned long last_valid;
1354 };
1355 
1356 /**
1357  * struct batadv_nc_packet - network coding packet used when coding and
1358  *  decoding packets
1359  * @list: next and prev pointer for the list handling
1360  * @packet_id: crc32 checksum of skb data
1361  * @timestamp: field containing the info when the packet was added to path
1362  * @neigh_node: pointer to original next hop neighbor of skb
1363  * @skb: skb which can be encoded or used for decoding
1364  * @nc_path: pointer to path this nc packet is attached to
1365  */
1366 struct batadv_nc_packet {
1367         struct list_head list;
1368         __be32 packet_id;
1369         unsigned long timestamp;
1370         struct batadv_neigh_node *neigh_node;
1371         struct sk_buff *skb;
1372         struct batadv_nc_path *nc_path;
1373 };
1374 
1375 /**
1376  * struct batadv_skb_cb - control buffer structure used to store private data
1377  *  relevant to batman-adv in the skb->cb buffer in skbs.
1378  * @decoded: Marks a skb as decoded, which is checked when searching for coding
1379  *  opportunities in network-coding.c
1380  */
1381 struct batadv_skb_cb {
1382         bool decoded;
1383 };
1384 
1385 /**
1386  * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded
1387  * @list: list node for batadv_priv::forw_{bat,bcast}_list
1388  * @cleanup_list: list node for purging functions
1389  * @send_time: execution time for delayed_work (packet sending)
1390  * @own: bool for locally generated packets (local OGMs are re-scheduled after
1391  *  sending)
1392  * @skb: bcast packet's skb buffer
1393  * @packet_len: size of aggregated OGM packet inside the skb buffer
1394  * @direct_link_flags: direct link flags for aggregated OGM packets
1395  * @num_packets: counter for bcast packet retransmission
1396  * @delayed_work: work queue callback item for packet sending
1397  * @if_incoming: pointer to incoming hard-iface or primary iface if
1398  *  locally generated packet
1399  * @if_outgoing: packet where the packet should be sent to, or NULL if
1400  *  unspecified
1401  * @queue_left: The queue (counter) this packet was applied to
1402  */
1403 struct batadv_forw_packet {
1404         struct hlist_node list;
1405         struct hlist_node cleanup_list;
1406         unsigned long send_time;
1407         u8 own;
1408         struct sk_buff *skb;
1409         u16 packet_len;
1410         u32 direct_link_flags;
1411         u8 num_packets;
1412         struct delayed_work delayed_work;
1413         struct batadv_hard_iface *if_incoming;
1414         struct batadv_hard_iface *if_outgoing;
1415         atomic_t *queue_left;
1416 };
1417 
1418 /**
1419  * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific)
1420  * @activate: start routing mechanisms when hard-interface is brought up
1421  *  (optional)
1422  * @enable: init routing info when hard-interface is enabled
1423  * @disable: de-init routing info when hard-interface is disabled
1424  * @update_mac: (re-)init mac addresses of the protocol information
1425  *  belonging to this hard-interface
1426  * @primary_set: called when primary interface is selected / changed
1427  */
1428 struct batadv_algo_iface_ops {
1429         void (*activate)(struct batadv_hard_iface *hard_iface);
1430         int (*enable)(struct batadv_hard_iface *hard_iface);
1431         void (*disable)(struct batadv_hard_iface *hard_iface);
1432         void (*update_mac)(struct batadv_hard_iface *hard_iface);
1433         void (*primary_set)(struct batadv_hard_iface *hard_iface);
1434 };
1435 
1436 /**
1437  * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific)
1438  * @hardif_init: called on creation of single hop entry
1439  *  (optional)
1440  * @cmp: compare the metrics of two neighbors for their respective outgoing
1441  *  interfaces
1442  * @is_similar_or_better: check if neigh1 is equally similar or better than
1443  *  neigh2 for their respective outgoing interface from the metric prospective
1444  * @print: print the single hop neighbor list (optional)
1445  * @dump: dump neighbors to a netlink socket (optional)
1446  */
1447 struct batadv_algo_neigh_ops {
1448         void (*hardif_init)(struct batadv_hardif_neigh_node *neigh);
1449         int (*cmp)(struct batadv_neigh_node *neigh1,
1450                    struct batadv_hard_iface *if_outgoing1,
1451                    struct batadv_neigh_node *neigh2,
1452                    struct batadv_hard_iface *if_outgoing2);
1453         bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1,
1454                                      struct batadv_hard_iface *if_outgoing1,
1455                                      struct batadv_neigh_node *neigh2,
1456                                      struct batadv_hard_iface *if_outgoing2);
1457 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1458         void (*print)(struct batadv_priv *priv, struct seq_file *seq);
1459 #endif
1460         void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1461                      struct batadv_priv *priv,
1462                      struct batadv_hard_iface *hard_iface);
1463 };
1464 
1465 /**
1466  * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific)
1467  * @free: free the resources allocated by the routing algorithm for an orig_node
1468  *  object (optional)
1469  * @add_if: ask the routing algorithm to apply the needed changes to the
1470  *  orig_node due to a new hard-interface being added into the mesh (optional)
1471  * @del_if: ask the routing algorithm to apply the needed changes to the
1472  *  orig_node due to an hard-interface being removed from the mesh (optional)
1473  * @print: print the originator table (optional)
1474  * @dump: dump originators to a netlink socket (optional)
1475  */
1476 struct batadv_algo_orig_ops {
1477         void (*free)(struct batadv_orig_node *orig_node);
1478         int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num);
1479         int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num,
1480                       int del_if_num);
1481 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1482         void (*print)(struct batadv_priv *priv, struct seq_file *seq,
1483                       struct batadv_hard_iface *hard_iface);
1484 #endif
1485         void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1486                      struct batadv_priv *priv,
1487                      struct batadv_hard_iface *hard_iface);
1488 };
1489 
1490 /**
1491  * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific)
1492  * @store_sel_class: parse and stores a new GW selection class (optional)
1493  * @show_sel_class: prints the current GW selection class (optional)
1494  * @get_best_gw_node: select the best GW from the list of available nodes
1495  *  (optional)
1496  * @is_eligible: check if a newly discovered GW is a potential candidate for
1497  *  the election as best GW (optional)
1498  * @print: print the gateway table (optional)
1499  * @dump: dump gateways to a netlink socket (optional)
1500  */
1501 struct batadv_algo_gw_ops {
1502         ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff,
1503                                    size_t count);
1504         ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff);
1505         struct batadv_gw_node *(*get_best_gw_node)
1506                 (struct batadv_priv *bat_priv);
1507         bool (*is_eligible)(struct batadv_priv *bat_priv,
1508                             struct batadv_orig_node *curr_gw_orig,
1509                             struct batadv_orig_node *orig_node);
1510 #ifdef CONFIG_BATMAN_ADV_DEBUGFS
1511         void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq);
1512 #endif
1513         void (*dump)(struct sk_buff *msg, struct netlink_callback *cb,
1514                      struct batadv_priv *priv);
1515 };
1516 
1517 /**
1518  * struct batadv_algo_ops - mesh algorithm callbacks
1519  * @list: list node for the batadv_algo_list
1520  * @name: name of the algorithm
1521  * @iface: callbacks related to interface handling
1522  * @neigh: callbacks related to neighbors handling
1523  * @orig: callbacks related to originators handling
1524  * @gw: callbacks related to GW mode
1525  */
1526 struct batadv_algo_ops {
1527         struct hlist_node list;
1528         char *name;
1529         struct batadv_algo_iface_ops iface;
1530         struct batadv_algo_neigh_ops neigh;
1531         struct batadv_algo_orig_ops orig;
1532         struct batadv_algo_gw_ops gw;
1533 };
1534 
1535 /**
1536  * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It
1537  * is used to stored ARP entries needed for the global DAT cache
1538  * @ip: the IPv4 corresponding to this DAT/ARP entry
1539  * @mac_addr: the MAC address associated to the stored IPv4
1540  * @vid: the vlan ID associated to this entry
1541  * @last_update: time in jiffies when this entry was refreshed last time
1542  * @hash_entry: hlist node for batadv_priv_dat::hash
1543  * @refcount: number of contexts the object is used
1544  * @rcu: struct used for freeing in an RCU-safe manner
1545  */
1546 struct batadv_dat_entry {
1547         __be32 ip;
1548         u8 mac_addr[ETH_ALEN];
1549         unsigned short vid;
1550         unsigned long last_update;
1551         struct hlist_node hash_entry;
1552         struct kref refcount;
1553         struct rcu_head rcu;
1554 };
1555 
1556 /**
1557  * struct batadv_hw_addr - a list entry for a MAC address
1558  * @list: list node for the linking of entries
1559  * @addr: the MAC address of this list entry
1560  */
1561 struct batadv_hw_addr {
1562         struct hlist_node list;
1563         unsigned char addr[ETH_ALEN];
1564 };
1565 
1566 /**
1567  * struct batadv_dat_candidate - candidate destination for DAT operations
1568  * @type: the type of the selected candidate. It can one of the following:
1569  *        - BATADV_DAT_CANDIDATE_NOT_FOUND
1570  *        - BATADV_DAT_CANDIDATE_ORIG
1571  * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the
1572  *             corresponding originator node structure
1573  */
1574 struct batadv_dat_candidate {
1575         int type;
1576         struct batadv_orig_node *orig_node;
1577 };
1578 
1579 /**
1580  * struct batadv_tvlv_container - container for tvlv appended to OGMs
1581  * @list: hlist node for batadv_priv_tvlv::container_list
1582  * @tvlv_hdr: tvlv header information needed to construct the tvlv
1583  * @refcount: number of contexts the object is used
1584  */
1585 struct batadv_tvlv_container {
1586         struct hlist_node list;
1587         struct batadv_tvlv_hdr tvlv_hdr;
1588         struct kref refcount;
1589 };
1590 
1591 /**
1592  * struct batadv_tvlv_handler - handler for specific tvlv type and version
1593  * @list: hlist node for batadv_priv_tvlv::handler_list
1594  * @ogm_handler: handler callback which is given the tvlv payload to process on
1595  *  incoming OGM packets
1596  * @unicast_handler: handler callback which is given the tvlv payload to process
1597  *  on incoming unicast tvlv packets
1598  * @type: tvlv type this handler feels responsible for
1599  * @version: tvlv version this handler feels responsible for
1600  * @flags: tvlv handler flags
1601  * @refcount: number of contexts the object is used
1602  * @rcu: struct used for freeing in an RCU-safe manner
1603  */
1604 struct batadv_tvlv_handler {
1605         struct hlist_node list;
1606         void (*ogm_handler)(struct batadv_priv *bat_priv,
1607                             struct batadv_orig_node *orig,
1608                             u8 flags, void *tvlv_value, u16 tvlv_value_len);
1609         int (*unicast_handler)(struct batadv_priv *bat_priv,
1610                                u8 *src, u8 *dst,
1611                                void *tvlv_value, u16 tvlv_value_len);
1612         u8 type;
1613         u8 version;
1614         u8 flags;
1615         struct kref refcount;
1616         struct rcu_head rcu;
1617 };
1618 
1619 /**
1620  * enum batadv_tvlv_handler_flags - tvlv handler flags definitions
1621  * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call
1622  *  this handler even if its type was not found (with no data)
1623  * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks
1624  *  a handler as being called, so it won't be called if the
1625  *  BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set
1626  */
1627 enum batadv_tvlv_handler_flags {
1628         BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1),
1629         BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2),
1630 };
1631 
1632 /**
1633  * struct batadv_store_mesh_work - Work queue item to detach add/del interface
1634  *  from sysfs locks
1635  * @net_dev: netdevice to add/remove to/from batman-adv soft-interface
1636  * @soft_iface_name: name of soft-interface to modify
1637  * @work: work queue item
1638  */
1639 struct batadv_store_mesh_work {
1640         struct net_device *net_dev;
1641         char soft_iface_name[IFNAMSIZ];
1642         struct work_struct work;
1643 };
1644 
1645 #endif /* _NET_BATMAN_ADV_TYPES_H_ */
1646 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp