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11#ifndef IEEE80211S_H
12#define IEEE80211S_H
13
14#include <linux/types.h>
15#include <linux/jhash.h>
16#include "ieee80211_i.h"
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39enum mesh_path_flags {
40 MESH_PATH_ACTIVE = BIT(0),
41 MESH_PATH_RESOLVING = BIT(1),
42 MESH_PATH_SN_VALID = BIT(2),
43 MESH_PATH_FIXED = BIT(3),
44 MESH_PATH_RESOLVED = BIT(4),
45 MESH_PATH_REQ_QUEUED = BIT(5),
46};
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63enum mesh_deferred_task_flags {
64 MESH_WORK_HOUSEKEEPING,
65 MESH_WORK_GROW_MPATH_TABLE,
66 MESH_WORK_GROW_MPP_TABLE,
67 MESH_WORK_ROOT,
68 MESH_WORK_DRIFT_ADJUST,
69 MESH_WORK_MBSS_CHANGED,
70};
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105struct mesh_path {
106 u8 dst[ETH_ALEN];
107 u8 mpp[ETH_ALEN];
108 struct ieee80211_sub_if_data *sdata;
109 struct sta_info __rcu *next_hop;
110 struct timer_list timer;
111 struct sk_buff_head frame_queue;
112 struct rcu_head rcu;
113 u32 sn;
114 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;
121 u8 rann_snd_addr[ETH_ALEN];
122 u32 rann_metric;
123 unsigned long last_preq_to_root;
124 bool is_root;
125 bool is_gate;
126};
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147struct mesh_table {
148
149 struct hlist_head *hash_buckets;
150 spinlock_t *hashwlock;
151 unsigned int hash_mask;
152 __u32 hash_rnd;
153 atomic_t entries;
154 void (*free_node) (struct hlist_node *p, bool free_leafs);
155 int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
156 int size_order;
157 int mean_chain_len;
158 struct hlist_head *known_gates;
159 spinlock_t gates_lock;
160
161 struct rcu_head rcu_head;
162};
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166#define RMC_BUCKETS 256
167#define RMC_QUEUE_MAX_LEN 4
168#define RMC_TIMEOUT (3 * HZ)
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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 {
189 struct list_head bucket[RMC_BUCKETS];
190 u32 idx_mask;
191};
192
193#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
194
195#define MESH_PATH_EXPIRE (600 * HZ)
196
197
198#define MESH_MAX_PLINKS 256
199
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201#define MESH_MAX_MPATHS 1024
202
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204#define MESH_FRAME_QUEUE_LEN 10
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207
208int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
209 const u8 *da, const u8 *sa);
210int 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);
215bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
216 struct ieee802_11_elems *ie);
217void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
218int 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);
230void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
231int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
232void ieee80211s_init(void);
233void ieee80211s_update_metric(struct ieee80211_local *local,
234 struct sta_info *sta, struct sk_buff *skb);
235void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
236int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
237void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
238void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
239const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
240
241void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
242 u32 changed);
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245u32 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);
248void 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);
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260int 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);
264void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
265struct 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);
273struct mesh_path *
274mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
275void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
276void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
277void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
278 struct ieee80211_mgmt *mgmt, size_t len);
279struct mesh_path *
280mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
281
282int mesh_path_add_gate(struct mesh_path *mpath);
283int mesh_path_send_to_gates(struct mesh_path *mpath);
284int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
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287void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
288 u8 *hw_addr, struct ieee802_11_elems *ie);
289bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
290u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
291void mesh_plink_broken(struct sta_info *sta);
292u32 mesh_plink_deactivate(struct sta_info *sta);
293u32 mesh_plink_open(struct sta_info *sta);
294u32 mesh_plink_block(struct sta_info *sta);
295void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
296 struct ieee80211_mgmt *mgmt, size_t len,
297 struct ieee80211_rx_status *rx_status);
298void mesh_sta_cleanup(struct sta_info *sta);
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302void mesh_mpath_table_grow(void);
303void mesh_mpp_table_grow(void);
304
305int mesh_path_error_tx(struct ieee80211_sub_if_data *sdata,
306 u8 ttl, const u8 *target, u32 target_sn,
307 u16 target_rcode, const u8 *ra);
308void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
309void mesh_path_flush_pending(struct mesh_path *mpath);
310void mesh_path_tx_pending(struct mesh_path *mpath);
311int mesh_pathtbl_init(void);
312void mesh_pathtbl_unregister(void);
313int mesh_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr);
314void mesh_path_timer(unsigned long data);
315void mesh_path_flush_by_nexthop(struct sta_info *sta);
316void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
317 struct sk_buff *skb);
318void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
319
320bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
321extern int mesh_paths_generation;
322extern int mpp_paths_generation;
323
324#ifdef CONFIG_MAC80211_MESH
325static inline
326u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
327{
328 atomic_inc(&sdata->u.mesh.estab_plinks);
329 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
330}
331
332static inline
333u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
334{
335 atomic_dec(&sdata->u.mesh.estab_plinks);
336 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
337}
338
339static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
340{
341 return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
342 atomic_read(&sdata->u.mesh.estab_plinks);
343}
344
345static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
346{
347 return (min_t(long, mesh_plink_free_count(sdata),
348 MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
349}
350
351static inline void mesh_path_activate(struct mesh_path *mpath)
352{
353 mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
354}
355
356static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
357{
358 return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
359}
360
361void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
362
363void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
364void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
365void ieee80211s_stop(void);
366#else
367static inline void
368ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
369static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
370{ return false; }
371static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
372{}
373static inline void ieee80211s_stop(void) {}
374#endif
375
376#endif
377