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Luis Carlos Coboccf80dd2008-02-23 15:17:08 +01001/*
Rui Paulo264d9b72009-11-09 23:46:58 +00002 * Copyright (c) 2008, 2009 open80211s Ltd.
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +01003 * Authors: Luis Carlos Cobo <luisca@cozybit.com>
4 * Javier Cardona <javier@cozybit.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#ifndef IEEE80211S_H
12#define IEEE80211S_H
13
Johannes Berg902acc72008-02-23 15:17:19 +010014#include <linux/types.h>
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010015#include <linux/jhash.h>
Johannes Berg902acc72008-02-23 15:17:19 +010016#include "ieee80211_i.h"
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010017
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010018
19/* Data structures */
20
21/**
Javier Cardonadbf498f2012-03-31 11:31:32 -070022 * enum mesh_config_capab_flags - mesh config IE capability flags
23 *
24 * @MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
25 * additional mesh peerings with other mesh STAs
26 * @MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
27 * @MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure is ongoing
28 */
29enum mesh_config_capab_flags {
30 MESHCONF_CAPAB_ACCEPT_PLINKS = BIT(0),
31 MESHCONF_CAPAB_FORWARDING = BIT(3),
32 MESHCONF_CAPAB_TBTT_ADJUSTING = BIT(5),
33};
34
35/**
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010036 * enum mesh_path_flags - mac80211 mesh path flags
37 *
38 *
39 *
Rami Roseneb80ed82009-01-19 13:50:32 +020040 * @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
41 * @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
Rui Paulod19b3bf2009-11-09 23:46:55 +000042 * @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010043 * number
44 * @MESH_PATH_FIXED: the mesh path has been manually set and should not be
45 * modified
46 * @MESH_PATH_RESOLVED: the mesh path can has been resolved
Javier Cardonaf3011cf2011-11-03 21:11:10 -070047 * @MESH_PATH_REQ_QUEUED: there is an unsent path request for this destination
48 * already queued up, waiting for the discovery process to start.
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010049 *
Rami Roseneb80ed82009-01-19 13:50:32 +020050 * MESH_PATH_RESOLVED is used by the mesh path timer to
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010051 * decide when to stop or cancel the mesh path discovery.
52 */
53enum mesh_path_flags {
54 MESH_PATH_ACTIVE = BIT(0),
55 MESH_PATH_RESOLVING = BIT(1),
Rui Paulod19b3bf2009-11-09 23:46:55 +000056 MESH_PATH_SN_VALID = BIT(2),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010057 MESH_PATH_FIXED = BIT(3),
58 MESH_PATH_RESOLVED = BIT(4),
Javier Cardonaf3011cf2011-11-03 21:11:10 -070059 MESH_PATH_REQ_QUEUED = BIT(5),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010060};
61
62/**
Javier Cardona18889232009-08-10 12:15:52 -070063 * enum mesh_deferred_task_flags - mac80211 mesh deferred tasks
64 *
65 *
66 *
67 * @MESH_WORK_HOUSEKEEPING: run the periodic mesh housekeeping tasks
68 * @MESH_WORK_GROW_MPATH_TABLE: the mesh path table is full and needs
69 * to grow.
70 * @MESH_WORK_GROW_MPP_TABLE: the mesh portals table is full and needs to
71 * grow
Rui Pauloe304bfd2009-11-09 23:46:56 +000072 * @MESH_WORK_ROOT: the mesh root station needs to send a frame
Javier Cardonadbf498f2012-03-31 11:31:32 -070073 * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
74 * mesh nodes
Javier Cardona18889232009-08-10 12:15:52 -070075 */
76enum mesh_deferred_task_flags {
77 MESH_WORK_HOUSEKEEPING,
78 MESH_WORK_GROW_MPATH_TABLE,
79 MESH_WORK_GROW_MPP_TABLE,
Rui Pauloe304bfd2009-11-09 23:46:56 +000080 MESH_WORK_ROOT,
Javier Cardonadbf498f2012-03-31 11:31:32 -070081 MESH_WORK_DRIFT_ADJUST,
Javier Cardona18889232009-08-10 12:15:52 -070082};
83
84/**
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010085 * struct mesh_path - mac80211 mesh path structure
86 *
87 * @dst: mesh path destination mac address
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +120088 * @sdata: mesh subif
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010089 * @next_hop: mesh neighbor to which frames for this destination will be
90 * forwarded
91 * @timer: mesh path discovery timer
92 * @frame_queue: pending queue for frames sent to this destination while the
93 * path is unresolved
Rui Paulod19b3bf2009-11-09 23:46:55 +000094 * @sn: target sequence number
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010095 * @metric: current metric to this destination
96 * @hop_count: hops to destination
97 * @exp_time: in jiffies, when the path will expire or when it expired
98 * @discovery_timeout: timeout (lapse in jiffies) used for the last discovery
99 * retry
100 * @discovery_retries: number of discovery retries
101 * @flags: mesh path flags, as specified on &enum mesh_path_flags
Javier Cardonaf5e50cd2011-08-29 13:23:05 -0700102 * @state_lock: mesh path state lock used to protect changes to the
103 * mpath itself. No need to take this lock when adding or removing
104 * an mpath to a hash bucket on a path table.
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800105 * @rann_snd_addr: the RANN sender address
Chun-Yeow Yeohd2a079f2012-03-23 18:48:51 +0800106 * @rann_metric: the aggregated path metric towards the root node
Chun-Yeow Yeoh728b19e2012-06-14 02:06:10 +0800107 * @last_preq_to_root: Timestamp of last PREQ sent to root
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800108 * @is_root: the destination station of this path is a root node
Javier Cardona5ee68e52011-08-09 16:45:08 -0700109 * @is_gate: the destination station of this path is a mesh gate
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100110 *
111 *
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200112 * The combination of dst and sdata is unique in the mesh path table. Since the
Johannes Bergd0709a62008-02-25 16:27:46 +0100113 * next_hop STA is only protected by RCU as well, deleting the STA must also
114 * remove/substitute the mesh_path structure and wait until that is no longer
115 * reachable before destroying the STA completely.
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100116 */
117struct mesh_path {
118 u8 dst[ETH_ALEN];
YanBo79617de2008-09-22 13:30:32 +0800119 u8 mpp[ETH_ALEN]; /* used for MPP or MAP */
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200120 struct ieee80211_sub_if_data *sdata;
Johannes Berg40b275b2011-05-13 14:15:49 +0200121 struct sta_info __rcu *next_hop;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100122 struct timer_list timer;
123 struct sk_buff_head frame_queue;
124 struct rcu_head rcu;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000125 u32 sn;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100126 u32 metric;
127 u8 hop_count;
128 unsigned long exp_time;
129 u32 discovery_timeout;
130 u8 discovery_retries;
131 enum mesh_path_flags flags;
132 spinlock_t state_lock;
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800133 u8 rann_snd_addr[ETH_ALEN];
Chun-Yeow Yeohd2a079f2012-03-23 18:48:51 +0800134 u32 rann_metric;
Chun-Yeow Yeoh728b19e2012-06-14 02:06:10 +0800135 unsigned long last_preq_to_root;
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800136 bool is_root;
Javier Cardona5ee68e52011-08-09 16:45:08 -0700137 bool is_gate;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100138};
139
140/**
141 * struct mesh_table
142 *
143 * @hash_buckets: array of hash buckets of the table
144 * @hashwlock: array of locks to protect write operations, one per bucket
145 * @hash_mask: 2^size_order - 1, used to compute hash idx
146 * @hash_rnd: random value used for hash computations
147 * @entries: number of entries in the table
148 * @free_node: function to free nodes of the table
Stefan Weileef35c22010-08-06 21:11:15 +0200149 * @copy_node: function to copy nodes of the table
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100150 * @size_order: determines size of the table, there will be 2^size_order hash
151 * buckets
152 * @mean_chain_len: maximum average length for the hash buckets' list, if it is
153 * reached, the table will grow
Javier Cardona5ee68e52011-08-09 16:45:08 -0700154 * @known_gates: list of known mesh gates and their mpaths by the station. The
155 * gate's mpath may or may not be resolved and active.
156 *
Johannes Berg1928eca2011-05-14 11:00:52 +0200157 * rcu_head: RCU head to free the table
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100158 */
159struct mesh_table {
160 /* Number of buckets will be 2^N */
161 struct hlist_head *hash_buckets;
162 spinlock_t *hashwlock; /* One per bucket, for add/del */
163 unsigned int hash_mask; /* (2^size_order) - 1 */
164 __u32 hash_rnd; /* Used for hash generation */
165 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
166 void (*free_node) (struct hlist_node *p, bool free_leafs);
Pavel Emelyanov4caf86c2008-05-07 19:47:01 +0400167 int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100168 int size_order;
169 int mean_chain_len;
Javier Cardona5ee68e52011-08-09 16:45:08 -0700170 struct hlist_head *known_gates;
171 spinlock_t gates_lock;
Johannes Berg1928eca2011-05-14 11:00:52 +0200172
173 struct rcu_head rcu_head;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100174};
175
176/* Recent multicast cache */
177/* RMC_BUCKETS must be a power of 2, maximum 256 */
178#define RMC_BUCKETS 256
179#define RMC_QUEUE_MAX_LEN 4
180#define RMC_TIMEOUT (3 * HZ)
181
182/**
183 * struct rmc_entry - entry in the Recent Multicast Cache
184 *
185 * @seqnum: mesh sequence number of the frame
186 * @exp_time: expiration time of the entry, in jiffies
187 * @sa: source address of the frame
188 *
189 * The Recent Multicast Cache keeps track of the latest multicast frames that
190 * have been received by a mesh interface and discards received multicast frames
191 * that are found in the cache.
192 */
193struct rmc_entry {
194 struct list_head list;
195 u32 seqnum;
196 unsigned long exp_time;
197 u8 sa[ETH_ALEN];
198};
199
200struct mesh_rmc {
201 struct rmc_entry bucket[RMC_BUCKETS];
Luis Carlos Cobo51cedda2008-04-23 12:15:29 -0700202 u32 idx_mask;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100203};
204
Thomas Pedersen25d49e42011-08-11 19:35:15 -0700205#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
206#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100207
Javier Cardona5b365832009-08-10 12:15:51 -0700208#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units */
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100209
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100210#define MESH_PATH_EXPIRE (600 * HZ)
211
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100212/* Default maximum number of plinks per interface */
213#define MESH_MAX_PLINKS 256
214
215/* Maximum number of paths per interface */
216#define MESH_MAX_MPATHS 1024
217
Thomas Pedersen4bd4c2d2012-08-09 18:15:40 -0700218/* Number of frames buffered per destination for unresolved destinations */
219#define MESH_FRAME_QUEUE_LEN 10
220
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100221/* Public interfaces */
222/* Various */
Javier Cardona3c5772a2009-08-10 12:15:48 -0700223int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
Johannes Berg15ff6362009-11-17 13:34:04 +0100224 const u8 *da, const u8 *sa);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100225int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
Javier Cardona61ad5392010-12-16 17:23:34 -0800226 struct ieee80211_sub_if_data *sdata, char *addr4or5,
227 char *addr6);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100228int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200229 struct ieee80211_sub_if_data *sdata);
Thomas Pedersenf743ff42012-04-18 19:23:43 -0700230bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
231 struct ieee802_11_elems *ie);
Johannes Berg472dbc42008-09-11 00:01:49 +0200232void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200233void mesh_mgmt_ies_add(struct sk_buff *skb,
234 struct ieee80211_sub_if_data *sdata);
Thomas Pedersen082ebb02011-08-11 19:35:10 -0700235int mesh_add_meshconf_ie(struct sk_buff *skb,
236 struct ieee80211_sub_if_data *sdata);
237int mesh_add_meshid_ie(struct sk_buff *skb,
238 struct ieee80211_sub_if_data *sdata);
239int mesh_add_rsn_ie(struct sk_buff *skb,
240 struct ieee80211_sub_if_data *sdata);
241int mesh_add_vendor_ies(struct sk_buff *skb,
242 struct ieee80211_sub_if_data *sdata);
Thomas Pedersen082ebb02011-08-11 19:35:10 -0700243int mesh_add_ds_params_ie(struct sk_buff *skb,
244 struct ieee80211_sub_if_data *sdata);
Thomas Pedersen176f3602011-10-26 14:47:27 -0700245int mesh_add_ht_cap_ie(struct sk_buff *skb,
246 struct ieee80211_sub_if_data *sdata);
Johannes Berg074d46d2012-03-15 19:45:16 +0100247int mesh_add_ht_oper_ie(struct sk_buff *skb,
Thomas Pedersen176f3602011-10-26 14:47:27 -0700248 struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200249void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
250int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100251void ieee80211s_init(void);
Javier Cardonabfc32e62009-08-17 17:15:55 -0700252void ieee80211s_update_metric(struct ieee80211_local *local,
Javier Cardona35b3fe1c2012-06-08 13:30:25 -0700253 struct sta_info *sta, struct sk_buff *skb);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100254void ieee80211s_stop(void);
Johannes Berg902acc72008-02-23 15:17:19 +0100255void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
Johannes Berg472dbc42008-09-11 00:01:49 +0200256void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
257void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
Rui Paulo63c57232009-11-09 23:46:57 +0000258void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
Javier Cardonadbf498f2012-03-31 11:31:32 -0700259struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
Johannes Berg902acc72008-02-23 15:17:19 +0100260
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100261/* Mesh paths */
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200262int mesh_nexthop_lookup(struct sk_buff *skb,
263 struct ieee80211_sub_if_data *sdata);
Thomas Pedersen0cfda852011-11-24 17:15:25 -0800264int mesh_nexthop_resolve(struct sk_buff *skb,
265 struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200266void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
267struct mesh_path *mesh_path_lookup(u8 *dst,
268 struct ieee80211_sub_if_data *sdata);
YanBo79617de2008-09-22 13:30:32 +0800269struct mesh_path *mpp_path_lookup(u8 *dst,
270 struct ieee80211_sub_if_data *sdata);
271int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200272struct mesh_path *mesh_path_lookup_by_idx(int idx,
273 struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100274void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200275void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200276void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
277 struct ieee80211_mgmt *mgmt, size_t len);
278int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
Javier Cardona5ee68e52011-08-09 16:45:08 -0700279
280int mesh_path_add_gate(struct mesh_path *mpath);
281int mesh_path_send_to_gates(struct mesh_path *mpath);
282int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100283/* Mesh plinks */
Thomas Pedersenf743ff42012-04-18 19:23:43 -0700284void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
285 u8 *hw_addr,
286 struct ieee802_11_elems *ie);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200287bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
Marco Porschdf323812012-08-08 07:58:43 +0200288u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100289void mesh_plink_broken(struct sta_info *sta);
290void mesh_plink_deactivate(struct sta_info *sta);
291int mesh_plink_open(struct sta_info *sta);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100292void mesh_plink_block(struct sta_info *sta);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200293void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
294 struct ieee80211_mgmt *mgmt, size_t len,
295 struct ieee80211_rx_status *rx_status);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100296
297/* Private interfaces */
298/* Mesh tables */
Javier Cardona18889232009-08-10 12:15:52 -0700299void mesh_mpath_table_grow(void);
300void mesh_mpp_table_grow(void);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100301/* Mesh paths */
Rui Paulod19b3bf2009-11-09 23:46:55 +0000302int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
Johannes Berg15ff6362009-11-17 13:34:04 +0100303 const u8 *ra, struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100304void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
305void mesh_path_flush_pending(struct mesh_path *mpath);
306void mesh_path_tx_pending(struct mesh_path *mpath);
307int mesh_pathtbl_init(void);
308void mesh_pathtbl_unregister(void);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200309int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100310void mesh_path_timer(unsigned long data);
311void mesh_path_flush_by_nexthop(struct sta_info *sta);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200312void mesh_path_discard_frame(struct sk_buff *skb,
313 struct ieee80211_sub_if_data *sdata);
Johannes Berg5bb644a2009-05-17 11:40:42 +0200314void mesh_path_quiesce(struct ieee80211_sub_if_data *sdata);
315void mesh_path_restart(struct ieee80211_sub_if_data *sdata);
Rui Pauloe304bfd2009-11-09 23:46:56 +0000316void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100317
Thomas Pedersen25d49e42011-08-11 19:35:15 -0700318bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
Johannes Bergf5ea9122009-08-07 16:17:38 +0200319extern int mesh_paths_generation;
320
Johannes Berg902acc72008-02-23 15:17:19 +0100321#ifdef CONFIG_MAC80211_MESH
322extern int mesh_allocated;
323
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100324static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
325{
Johannes Berg472dbc42008-09-11 00:01:49 +0200326 return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
327 atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100328}
329
330static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
331{
Johannes Bergd0709a62008-02-25 16:27:46 +0100332 return (min_t(long, mesh_plink_free_count(sdata),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100333 MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
334}
335
336static inline void mesh_path_activate(struct mesh_path *mpath)
337{
338 mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
339}
340
Javier Cardonac7108a72010-12-16 17:37:50 -0800341static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
342{
343 return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
344}
345
Johannes Berg472dbc42008-09-11 00:01:49 +0200346void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
347
Johannes Berg5bb644a2009-05-17 11:40:42 +0200348void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata);
349void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata);
350void mesh_plink_quiesce(struct sta_info *sta);
351void mesh_plink_restart(struct sta_info *sta);
Andrei Emeltchenko94c514f2012-04-24 14:18:28 +0300352void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
Javier Cardonadbf498f2012-03-31 11:31:32 -0700353void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
Johannes Berg902acc72008-02-23 15:17:19 +0100354#else
355#define mesh_allocated 0
Johannes Berg472dbc42008-09-11 00:01:49 +0200356static inline void
357ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
Johannes Berg5bb644a2009-05-17 11:40:42 +0200358static inline void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
359{}
360static inline void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
361{}
362static inline void mesh_plink_quiesce(struct sta_info *sta) {}
363static inline void mesh_plink_restart(struct sta_info *sta) {}
Javier Cardonac7108a72010-12-16 17:37:50 -0800364static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
365{ return false; }
Andrei Emeltchenko94c514f2012-04-24 14:18:28 +0300366static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
367{}
Johannes Berg902acc72008-02-23 15:17:19 +0100368#endif
369
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100370#endif /* IEEE80211S_H */