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8#ifndef IEEE80211S_H
9#define IEEE80211S_H
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11#include <linux/types.h>
12#include <linux/jhash.h>
13#include "ieee80211_i.h"
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36enum mesh_path_flags {
37 MESH_PATH_ACTIVE = BIT(0),
38 MESH_PATH_RESOLVING = BIT(1),
39 MESH_PATH_SN_VALID = BIT(2),
40 MESH_PATH_FIXED = BIT(3),
41 MESH_PATH_RESOLVED = BIT(4),
42 MESH_PATH_REQ_QUEUED = BIT(5),
43 MESH_PATH_DELETED = BIT(6),
44};
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57enum mesh_deferred_task_flags {
58 MESH_WORK_HOUSEKEEPING,
59 MESH_WORK_ROOT,
60 MESH_WORK_DRIFT_ADJUST,
61 MESH_WORK_MBSS_CHANGED,
62};
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103struct mesh_path {
104 u8 dst[ETH_ALEN];
105 u8 mpp[ETH_ALEN];
106 struct rhash_head rhash;
107 struct hlist_node walk_list;
108 struct hlist_node gate_list;
109 struct ieee80211_sub_if_data *sdata;
110 struct sta_info __rcu *next_hop;
111 struct timer_list timer;
112 struct sk_buff_head frame_queue;
113 struct rcu_head rcu;
114 u32 sn;
115 u32 metric;
116 u8 hop_count;
117 unsigned long exp_time;
118 u32 discovery_timeout;
119 u8 discovery_retries;
120 enum mesh_path_flags flags;
121 spinlock_t state_lock;
122 u8 rann_snd_addr[ETH_ALEN];
123 u32 rann_metric;
124 unsigned long last_preq_to_root;
125 bool is_root;
126 bool is_gate;
127 u32 path_change_count;
128};
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141struct mesh_table {
142 struct hlist_head known_gates;
143 spinlock_t gates_lock;
144 struct rhashtable rhead;
145 struct hlist_head walk_head;
146 spinlock_t walk_lock;
147 atomic_t entries;
148};
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152#define RMC_BUCKETS 256
153#define RMC_QUEUE_MAX_LEN 4
154#define RMC_TIMEOUT (3 * HZ)
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168struct rmc_entry {
169 struct hlist_node list;
170 unsigned long exp_time;
171 u32 seqnum;
172 u8 sa[ETH_ALEN];
173};
174
175struct mesh_rmc {
176 struct hlist_head bucket[RMC_BUCKETS];
177 u32 idx_mask;
178};
179
180#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
181
182#define MESH_PATH_EXPIRE (600 * HZ)
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185#define MESH_MAX_PLINKS 256
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188#define MESH_MAX_MPATHS 1024
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191#define MESH_FRAME_QUEUE_LEN 10
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194
195int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
196 const u8 *da, const u8 *sa);
197unsigned int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
198 struct ieee80211s_hdr *meshhdr,
199 const char *addr4or5, const char *addr6);
200int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
201 const u8 *addr, struct ieee80211s_hdr *mesh_hdr);
202bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
203 struct ieee802_11_elems *ie);
204void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
205int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
206 struct sk_buff *skb);
207int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata,
208 struct sk_buff *skb);
209int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata,
210 struct sk_buff *skb);
211int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
212 struct sk_buff *skb);
213int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
214 struct sk_buff *skb);
215int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
216 struct sk_buff *skb);
217int mesh_add_vht_cap_ie(struct ieee80211_sub_if_data *sdata,
218 struct sk_buff *skb);
219int mesh_add_vht_oper_ie(struct ieee80211_sub_if_data *sdata,
220 struct sk_buff *skb);
221int mesh_add_he_cap_ie(struct ieee80211_sub_if_data *sdata,
222 struct sk_buff *skb, u8 ie_len);
223int mesh_add_he_oper_ie(struct ieee80211_sub_if_data *sdata,
224 struct sk_buff *skb);
225void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
226int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
227void ieee80211s_init(void);
228void ieee80211s_update_metric(struct ieee80211_local *local,
229 struct sta_info *sta,
230 struct ieee80211_tx_status *st);
231void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
232void ieee80211_mesh_teardown_sdata(struct ieee80211_sub_if_data *sdata);
233int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
234void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
235void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
236const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
237
238void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
239 u32 changed);
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242u32 ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata);
243u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
244 enum nl80211_mesh_power_mode pm);
245void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
246 struct sta_info *sta,
247 struct ieee80211_hdr *hdr);
248void ieee80211_mps_sta_status_update(struct sta_info *sta);
249void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
250 struct ieee80211_hdr *hdr);
251void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
252 bool tx, bool acked);
253void ieee80211_mps_frame_release(struct sta_info *sta,
254 struct ieee802_11_elems *elems);
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257int mesh_nexthop_lookup(struct ieee80211_sub_if_data *sdata,
258 struct sk_buff *skb);
259int mesh_nexthop_resolve(struct ieee80211_sub_if_data *sdata,
260 struct sk_buff *skb);
261void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
262struct mesh_path *mesh_path_lookup(struct ieee80211_sub_if_data *sdata,
263 const u8 *dst);
264struct mesh_path *mpp_path_lookup(struct ieee80211_sub_if_data *sdata,
265 const u8 *dst);
266int mpp_path_add(struct ieee80211_sub_if_data *sdata,
267 const u8 *dst, const u8 *mpp);
268struct mesh_path *
269mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
270struct mesh_path *
271mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
272void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
273void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
274void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
275 struct ieee80211_mgmt *mgmt, size_t len);
276struct mesh_path *
277mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
278
279int mesh_path_add_gate(struct mesh_path *mpath);
280int mesh_path_send_to_gates(struct mesh_path *mpath);
281int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
282u32 airtime_link_metric_get(struct ieee80211_local *local,
283 struct sta_info *sta);
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286void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
287 u8 *hw_addr, struct ieee802_11_elems *ie,
288 struct ieee80211_rx_status *rx_status);
289bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
290u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
291void mesh_plink_timer(struct timer_list *t);
292void mesh_plink_broken(struct sta_info *sta);
293u32 mesh_plink_deactivate(struct sta_info *sta);
294u32 mesh_plink_open(struct sta_info *sta);
295u32 mesh_plink_block(struct sta_info *sta);
296void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
297 struct ieee80211_mgmt *mgmt, size_t len,
298 struct ieee80211_rx_status *rx_status);
299void mesh_sta_cleanup(struct sta_info *sta);
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303int mesh_path_error_tx(struct ieee80211_sub_if_data *sdata,
304 u8 ttl, const u8 *target, u32 target_sn,
305 u16 target_rcode, const u8 *ra);
306void 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(struct ieee80211_sub_if_data *sdata);
310void mesh_pathtbl_unregister(struct ieee80211_sub_if_data *sdata);
311int mesh_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr);
312void mesh_path_timer(struct timer_list *t);
313void mesh_path_flush_by_nexthop(struct sta_info *sta);
314void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
315 struct sk_buff *skb);
316void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
317
318bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
319
320#ifdef CONFIG_MAC80211_MESH
321static inline
322u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
323{
324 atomic_inc(&sdata->u.mesh.estab_plinks);
325 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
326}
327
328static inline
329u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
330{
331 atomic_dec(&sdata->u.mesh.estab_plinks);
332 return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
333}
334
335static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
336{
337 return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
338 atomic_read(&sdata->u.mesh.estab_plinks);
339}
340
341static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
342{
343 return (min_t(long, mesh_plink_free_count(sdata),
344 MESH_MAX_PLINKS - sdata->local->num_sta)) > 0;
345}
346
347static inline void mesh_path_activate(struct mesh_path *mpath)
348{
349 mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
350}
351
352static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
353{
354 return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
355}
356
357void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
358void mesh_sync_adjust_tsf(struct ieee80211_sub_if_data *sdata);
359void ieee80211s_stop(void);
360#else
361static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
362{ return false; }
363static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
364{}
365static inline void ieee80211s_stop(void) {}
366#endif
367
368#endif
369