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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/**
22 * enum mesh_path_flags - mac80211 mesh path flags
23 *
24 *
25 *
Rami Roseneb80ed82009-01-19 13:50:32 +020026 * @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
27 * @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
Rui Paulod19b3bf2009-11-09 23:46:55 +000028 * @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
Johannes Bergbf7cd942013-02-15 14:40:31 +010029 * number
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010030 * @MESH_PATH_FIXED: the mesh path has been manually set and should not be
Johannes Bergbf7cd942013-02-15 14:40:31 +010031 * modified
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010032 * @MESH_PATH_RESOLVED: the mesh path can has been resolved
Javier Cardonaf3011cf2011-11-03 21:11:10 -070033 * @MESH_PATH_REQ_QUEUED: there is an unsent path request for this destination
Johannes Bergbf7cd942013-02-15 14:40:31 +010034 * already queued up, waiting for the discovery process to start.
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010035 *
Rami Roseneb80ed82009-01-19 13:50:32 +020036 * MESH_PATH_RESOLVED is used by the mesh path timer to
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010037 * decide when to stop or cancel the mesh path discovery.
38 */
39enum mesh_path_flags {
40 MESH_PATH_ACTIVE = BIT(0),
41 MESH_PATH_RESOLVING = BIT(1),
Rui Paulod19b3bf2009-11-09 23:46:55 +000042 MESH_PATH_SN_VALID = BIT(2),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010043 MESH_PATH_FIXED = BIT(3),
44 MESH_PATH_RESOLVED = BIT(4),
Javier Cardonaf3011cf2011-11-03 21:11:10 -070045 MESH_PATH_REQ_QUEUED = BIT(5),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010046};
47
48/**
Javier Cardona18889232009-08-10 12:15:52 -070049 * enum mesh_deferred_task_flags - mac80211 mesh deferred tasks
50 *
51 *
52 *
53 * @MESH_WORK_HOUSEKEEPING: run the periodic mesh housekeeping tasks
54 * @MESH_WORK_GROW_MPATH_TABLE: the mesh path table is full and needs
55 * to grow.
56 * @MESH_WORK_GROW_MPP_TABLE: the mesh portals table is full and needs to
57 * grow
Rui Pauloe304bfd2009-11-09 23:46:56 +000058 * @MESH_WORK_ROOT: the mesh root station needs to send a frame
Javier Cardonadbf498f2012-03-31 11:31:32 -070059 * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
60 * mesh nodes
Thomas Pedersenf81a9de2013-06-13 15:54:41 -070061 * @MESH_WORK_MBSS_CHANGED: rebuild beacon and notify driver of BSS changes
Javier Cardona18889232009-08-10 12:15:52 -070062 */
63enum mesh_deferred_task_flags {
64 MESH_WORK_HOUSEKEEPING,
65 MESH_WORK_GROW_MPATH_TABLE,
66 MESH_WORK_GROW_MPP_TABLE,
Rui Pauloe304bfd2009-11-09 23:46:56 +000067 MESH_WORK_ROOT,
Javier Cardonadbf498f2012-03-31 11:31:32 -070068 MESH_WORK_DRIFT_ADJUST,
Thomas Pedersenf81a9de2013-06-13 15:54:41 -070069 MESH_WORK_MBSS_CHANGED,
Javier Cardona18889232009-08-10 12:15:52 -070070};
71
72/**
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010073 * struct mesh_path - mac80211 mesh path structure
74 *
75 * @dst: mesh path destination mac address
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +120076 * @sdata: mesh subif
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010077 * @next_hop: mesh neighbor to which frames for this destination will be
Johannes Bergbf7cd942013-02-15 14:40:31 +010078 * forwarded
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010079 * @timer: mesh path discovery timer
80 * @frame_queue: pending queue for frames sent to this destination while the
Johannes Bergbf7cd942013-02-15 14:40:31 +010081 * path is unresolved
Rui Paulod19b3bf2009-11-09 23:46:55 +000082 * @sn: target sequence number
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010083 * @metric: current metric to this destination
84 * @hop_count: hops to destination
85 * @exp_time: in jiffies, when the path will expire or when it expired
86 * @discovery_timeout: timeout (lapse in jiffies) used for the last discovery
Johannes Bergbf7cd942013-02-15 14:40:31 +010087 * retry
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010088 * @discovery_retries: number of discovery retries
89 * @flags: mesh path flags, as specified on &enum mesh_path_flags
Javier Cardonaf5e50cd2011-08-29 13:23:05 -070090 * @state_lock: mesh path state lock used to protect changes to the
91 * mpath itself. No need to take this lock when adding or removing
92 * an mpath to a hash bucket on a path table.
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +080093 * @rann_snd_addr: the RANN sender address
Chun-Yeow Yeohd2a079f2012-03-23 18:48:51 +080094 * @rann_metric: the aggregated path metric towards the root node
Chun-Yeow Yeoh728b19e2012-06-14 02:06:10 +080095 * @last_preq_to_root: Timestamp of last PREQ sent to root
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +080096 * @is_root: the destination station of this path is a root node
Javier Cardona5ee68e52011-08-09 16:45:08 -070097 * @is_gate: the destination station of this path is a mesh gate
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +010098 *
99 *
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200100 * The combination of dst and sdata is unique in the mesh path table. Since the
Johannes Bergd0709a62008-02-25 16:27:46 +0100101 * next_hop STA is only protected by RCU as well, deleting the STA must also
102 * remove/substitute the mesh_path structure and wait until that is no longer
103 * reachable before destroying the STA completely.
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100104 */
105struct mesh_path {
106 u8 dst[ETH_ALEN];
YanBo79617de2008-09-22 13:30:32 +0800107 u8 mpp[ETH_ALEN]; /* used for MPP or MAP */
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200108 struct ieee80211_sub_if_data *sdata;
Johannes Berg40b275b2011-05-13 14:15:49 +0200109 struct sta_info __rcu *next_hop;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100110 struct timer_list timer;
111 struct sk_buff_head frame_queue;
112 struct rcu_head rcu;
Rui Paulod19b3bf2009-11-09 23:46:55 +0000113 u32 sn;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100114 u32 metric;
115 u8 hop_count;
116 unsigned long exp_time;
117 u32 discovery_timeout;
118 u8 discovery_retries;
119 enum mesh_path_flags flags;
120 spinlock_t state_lock;
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800121 u8 rann_snd_addr[ETH_ALEN];
Chun-Yeow Yeohd2a079f2012-03-23 18:48:51 +0800122 u32 rann_metric;
Chun-Yeow Yeoh728b19e2012-06-14 02:06:10 +0800123 unsigned long last_preq_to_root;
Chun-Yeow Yeoh3d045a52012-02-28 22:00:06 +0800124 bool is_root;
Javier Cardona5ee68e52011-08-09 16:45:08 -0700125 bool is_gate;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100126};
127
128/**
129 * struct mesh_table
130 *
131 * @hash_buckets: array of hash buckets of the table
132 * @hashwlock: array of locks to protect write operations, one per bucket
133 * @hash_mask: 2^size_order - 1, used to compute hash idx
134 * @hash_rnd: random value used for hash computations
135 * @entries: number of entries in the table
136 * @free_node: function to free nodes of the table
Stefan Weileef35c22010-08-06 21:11:15 +0200137 * @copy_node: function to copy nodes of the table
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100138 * @size_order: determines size of the table, there will be 2^size_order hash
139 * buckets
140 * @mean_chain_len: maximum average length for the hash buckets' list, if it is
141 * reached, the table will grow
Javier Cardona5ee68e52011-08-09 16:45:08 -0700142 * @known_gates: list of known mesh gates and their mpaths by the station. The
143 * gate's mpath may or may not be resolved and active.
144 *
Johannes Berg1928eca2011-05-14 11:00:52 +0200145 * rcu_head: RCU head to free the table
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100146 */
147struct mesh_table {
148 /* Number of buckets will be 2^N */
149 struct hlist_head *hash_buckets;
150 spinlock_t *hashwlock; /* One per bucket, for add/del */
151 unsigned int hash_mask; /* (2^size_order) - 1 */
152 __u32 hash_rnd; /* Used for hash generation */
153 atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */
154 void (*free_node) (struct hlist_node *p, bool free_leafs);
Pavel Emelyanov4caf86c2008-05-07 19:47:01 +0400155 int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100156 int size_order;
157 int mean_chain_len;
Javier Cardona5ee68e52011-08-09 16:45:08 -0700158 struct hlist_head *known_gates;
159 spinlock_t gates_lock;
Johannes Berg1928eca2011-05-14 11:00:52 +0200160
161 struct rcu_head rcu_head;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100162};
163
164/* Recent multicast cache */
165/* RMC_BUCKETS must be a power of 2, maximum 256 */
166#define RMC_BUCKETS 256
167#define RMC_QUEUE_MAX_LEN 4
168#define RMC_TIMEOUT (3 * HZ)
169
170/**
171 * struct rmc_entry - entry in the Recent Multicast Cache
172 *
173 * @seqnum: mesh sequence number of the frame
174 * @exp_time: expiration time of the entry, in jiffies
175 * @sa: source address of the frame
176 *
177 * The Recent Multicast Cache keeps track of the latest multicast frames that
178 * have been received by a mesh interface and discards received multicast frames
179 * that are found in the cache.
180 */
181struct rmc_entry {
182 struct list_head list;
183 u32 seqnum;
184 unsigned long exp_time;
185 u8 sa[ETH_ALEN];
186};
187
188struct mesh_rmc {
Thomas Pedersenb7cfcd12012-12-17 18:41:57 -0800189 struct list_head bucket[RMC_BUCKETS];
Luis Carlos Cobo51cedda2008-04-23 12:15:29 -0700190 u32 idx_mask;
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100191};
192
Thomas Pedersen25d49e42011-08-11 19:35:15 -0700193#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100194
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100195#define MESH_PATH_EXPIRE (600 * HZ)
196
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100197/* Default maximum number of plinks per interface */
198#define MESH_MAX_PLINKS 256
199
200/* Maximum number of paths per interface */
201#define MESH_MAX_MPATHS 1024
202
Thomas Pedersen4bd4c2d2012-08-09 18:15:40 -0700203/* Number of frames buffered per destination for unresolved destinations */
204#define MESH_FRAME_QUEUE_LEN 10
205
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100206/* Public interfaces */
207/* Various */
Javier Cardona3c5772a2009-08-10 12:15:48 -0700208int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
Johannes Berg15ff6362009-11-17 13:34:04 +0100209 const u8 *da, const u8 *sa);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100210int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
211 struct ieee80211s_hdr *meshhdr,
212 const char *addr4or5, const char *addr6);
213int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
214 const u8 *addr, struct ieee80211s_hdr *mesh_hdr);
Thomas Pedersenf743ff42012-04-18 19:23:43 -0700215bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
216 struct ieee802_11_elems *ie);
Johannes Berg472dbc42008-09-11 00:01:49 +0200217void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100218int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
219 struct sk_buff *skb);
220int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata,
221 struct sk_buff *skb);
222int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata,
223 struct sk_buff *skb);
224int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
225 struct sk_buff *skb);
226int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
227 struct sk_buff *skb);
228int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
229 struct sk_buff *skb);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200230void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
231int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100232void ieee80211s_init(void);
Javier Cardonabfc32e62009-08-17 17:15:55 -0700233void ieee80211s_update_metric(struct ieee80211_local *local,
Johannes Bergbf7cd942013-02-15 14:40:31 +0100234 struct sta_info *sta, struct sk_buff *skb);
Johannes Berg902acc72008-02-23 15:17:19 +0100235void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
Thomas Pedersen2b5e1962013-02-14 11:20:13 -0800236int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
Johannes Berg472dbc42008-09-11 00:01:49 +0200237void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
Rui Paulo63c57232009-11-09 23:46:57 +0000238void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
Johannes Berg8ba7acf2012-09-30 17:07:19 +0200239const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
Thomas Pedersen2b5e1962013-02-14 11:20:13 -0800240/* wrapper for ieee80211_bss_info_change_notify() */
241void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
242 u32 changed);
Johannes Berg902acc72008-02-23 15:17:19 +0100243
Marco Porsch3f52b7e2013-01-30 18:14:08 +0100244/* mesh power save */
Thomas Pedersen39886b62013-02-13 12:14:19 -0800245u32 ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata);
246u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
247 enum nl80211_mesh_power_mode pm);
Marco Porsch3f52b7e2013-01-30 18:14:08 +0100248void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
249 struct sta_info *sta,
250 struct ieee80211_hdr *hdr);
251void ieee80211_mps_sta_status_update(struct sta_info *sta);
252void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
253 struct ieee80211_hdr *hdr);
254void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
255 bool tx, bool acked);
256void ieee80211_mps_frame_release(struct sta_info *sta,
257 struct ieee802_11_elems *elems);
258
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100259/* Mesh paths */
Johannes Bergbf7cd942013-02-15 14:40:31 +0100260int mesh_nexthop_lookup(struct ieee80211_sub_if_data *sdata,
261 struct sk_buff *skb);
262int mesh_nexthop_resolve(struct ieee80211_sub_if_data *sdata,
263 struct sk_buff *skb);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200264void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100265struct mesh_path *mesh_path_lookup(struct ieee80211_sub_if_data *sdata,
266 const u8 *dst);
267struct mesh_path *mpp_path_lookup(struct ieee80211_sub_if_data *sdata,
268 const u8 *dst);
269int mpp_path_add(struct ieee80211_sub_if_data *sdata,
270 const u8 *dst, const u8 *mpp);
271struct mesh_path *
272mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100273void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200274void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
Jasper Bryant-Greenef698d852008-08-03 12:04:37 +1200275void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
Johannes Bergbf7cd942013-02-15 14:40:31 +0100276 struct ieee80211_mgmt *mgmt, size_t len);
Bob Copelandae76eef2013-03-29 09:38:39 -0400277struct mesh_path *
278mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
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);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100283
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100284/* Mesh plinks */
Thomas Pedersenf743ff42012-04-18 19:23:43 -0700285void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
Johannes Bergbf7cd942013-02-15 14:40:31 +0100286 u8 *hw_addr, 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);
Thomas Pedersen45b50282013-02-06 10:17:21 -0800290u32 mesh_plink_deactivate(struct sta_info *sta);
Thomas Pedersen39886b62013-02-13 12:14:19 -0800291u32 mesh_plink_open(struct sta_info *sta);
292u32 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);
Thomas Pedersen45b50282013-02-06 10:17:21 -0800296void mesh_sta_cleanup(struct sta_info *sta);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100297
298/* Private interfaces */
299/* Mesh tables */
Javier Cardona18889232009-08-10 12:15:52 -0700300void mesh_mpath_table_grow(void);
301void mesh_mpp_table_grow(void);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100302/* Mesh paths */
Johannes Bergbf7cd942013-02-15 14:40:31 +0100303int mesh_path_error_tx(struct ieee80211_sub_if_data *sdata,
Chun-Yeow Yeohf63f8422013-11-13 15:39:12 +0800304 u8 ttl, const u8 *target, u32 target_sn,
305 u16 target_rcode, const u8 *ra);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100306void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
307void mesh_path_flush_pending(struct mesh_path *mpath);
308void mesh_path_tx_pending(struct mesh_path *mpath);
309int mesh_pathtbl_init(void);
310void mesh_pathtbl_unregister(void);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100311int mesh_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100312void mesh_path_timer(unsigned long data);
313void mesh_path_flush_by_nexthop(struct sta_info *sta);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100314void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
315 struct sk_buff *skb);
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
Marco Porsch1617bab2013-01-07 16:04:49 +0100322static inline
323u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
324{
325 atomic_inc(&sdata->u.mesh.estab_plinks);
Jacob Minshalle05eccc2013-05-29 14:32:36 -0700326 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
Marco Porsch1617bab2013-01-07 16:04:49 +0100327}
328
329static inline
330u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
331{
332 atomic_dec(&sdata->u.mesh.estab_plinks);
Jacob Minshalle05eccc2013-05-29 14:32:36 -0700333 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
Marco Porsch1617bab2013-01-07 16:04:49 +0100334}
335
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100336static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
337{
Johannes Berg472dbc42008-09-11 00:01:49 +0200338 return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
Ashok Nagarajan1258d972012-10-09 13:27:47 -0700339 atomic_read(&sdata->u.mesh.estab_plinks);
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100340}
341
342static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
343{
Johannes Bergd0709a62008-02-25 16:27:46 +0100344 return (min_t(long, mesh_plink_free_count(sdata),
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100345 MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
346}
347
348static inline void mesh_path_activate(struct mesh_path *mpath)
349{
350 mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
351}
352
Javier Cardonac7108a72010-12-16 17:37:50 -0800353static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
354{
355 return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
356}
357
Johannes Berg472dbc42008-09-11 00:01:49 +0200358void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
359
Andrei Emeltchenko94c514f2012-04-24 14:18:28 +0300360void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
Javier Cardonadbf498f2012-03-31 11:31:32 -0700361void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
Johannes Bergbf7cd942013-02-15 14:40:31 +0100362void ieee80211s_stop(void);
Johannes Berg902acc72008-02-23 15:17:19 +0100363#else
Johannes Berg472dbc42008-09-11 00:01:49 +0200364static inline void
365ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
Javier Cardonac7108a72010-12-16 17:37:50 -0800366static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
367{ return false; }
Andrei Emeltchenko94c514f2012-04-24 14:18:28 +0300368static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
369{}
Johannes Bergbf7cd942013-02-15 14:40:31 +0100370static inline void ieee80211s_stop(void) {}
Johannes Berg902acc72008-02-23 15:17:19 +0100371#endif
372
Luis Carlos Coboccf80dd2008-02-23 15:17:08 +0100373#endif /* IEEE80211S_H */