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-rw-r--r--net/mac80211/mesh.h252
1 files changed, 139 insertions, 113 deletions
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 85562c59d7d..f39a19f9090 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -13,7 +13,6 @@
#include <linux/types.h>
#include <linux/jhash.h>
-#include <asm/unaligned.h>
#include "ieee80211_i.h"
@@ -27,10 +26,12 @@
* @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
* @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
* @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
- * number
+ * number
* @MESH_PATH_FIXED: the mesh path has been manually set and should not be
- * modified
+ * modified
* @MESH_PATH_RESOLVED: the mesh path can has been resolved
+ * @MESH_PATH_REQ_QUEUED: there is an unsent path request for this destination
+ * already queued up, waiting for the discovery process to start.
*
* MESH_PATH_RESOLVED is used by the mesh path timer to
* decide when to stop or cancel the mesh path discovery.
@@ -41,6 +42,7 @@ enum mesh_path_flags {
MESH_PATH_SN_VALID = BIT(2),
MESH_PATH_FIXED = BIT(3),
MESH_PATH_RESOLVED = BIT(4),
+ MESH_PATH_REQ_QUEUED = BIT(5),
};
/**
@@ -54,12 +56,17 @@ enum mesh_path_flags {
* @MESH_WORK_GROW_MPP_TABLE: the mesh portals table is full and needs to
* grow
* @MESH_WORK_ROOT: the mesh root station needs to send a frame
+ * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
+ * mesh nodes
+ * @MESH_WORK_MBSS_CHANGED: rebuild beacon and notify driver of BSS changes
*/
enum mesh_deferred_task_flags {
MESH_WORK_HOUSEKEEPING,
MESH_WORK_GROW_MPATH_TABLE,
MESH_WORK_GROW_MPP_TABLE,
MESH_WORK_ROOT,
+ MESH_WORK_DRIFT_ADJUST,
+ MESH_WORK_MBSS_CHANGED,
};
/**
@@ -68,19 +75,26 @@ enum mesh_deferred_task_flags {
* @dst: mesh path destination mac address
* @sdata: mesh subif
* @next_hop: mesh neighbor to which frames for this destination will be
- * forwarded
+ * forwarded
* @timer: mesh path discovery timer
* @frame_queue: pending queue for frames sent to this destination while the
- * path is unresolved
+ * path is unresolved
* @sn: target sequence number
* @metric: current metric to this destination
* @hop_count: hops to destination
* @exp_time: in jiffies, when the path will expire or when it expired
* @discovery_timeout: timeout (lapse in jiffies) used for the last discovery
- * retry
+ * retry
* @discovery_retries: number of discovery retries
* @flags: mesh path flags, as specified on &enum mesh_path_flags
- * @state_lock: mesh path state lock
+ * @state_lock: mesh path state lock used to protect changes to the
+ * mpath itself. No need to take this lock when adding or removing
+ * an mpath to a hash bucket on a path table.
+ * @rann_snd_addr: the RANN sender address
+ * @rann_metric: the aggregated path metric towards the root node
+ * @last_preq_to_root: Timestamp of last PREQ sent to root
+ * @is_root: the destination station of this path is a root node
+ * @is_gate: the destination station of this path is a mesh gate
*
*
* The combination of dst and sdata is unique in the mesh path table. Since the
@@ -92,7 +106,7 @@ struct mesh_path {
u8 dst[ETH_ALEN];
u8 mpp[ETH_ALEN]; /* used for MPP or MAP */
struct ieee80211_sub_if_data *sdata;
- struct sta_info *next_hop;
+ struct sta_info __rcu *next_hop;
struct timer_list timer;
struct sk_buff_head frame_queue;
struct rcu_head rcu;
@@ -104,6 +118,11 @@ struct mesh_path {
u8 discovery_retries;
enum mesh_path_flags flags;
spinlock_t state_lock;
+ u8 rann_snd_addr[ETH_ALEN];
+ u32 rann_metric;
+ unsigned long last_preq_to_root;
+ bool is_root;
+ bool is_gate;
};
/**
@@ -115,11 +134,15 @@ struct mesh_path {
* @hash_rnd: random value used for hash computations
* @entries: number of entries in the table
* @free_node: function to free nodes of the table
- * @copy_node: fuction to copy nodes of the table
+ * @copy_node: function to copy nodes of the table
* @size_order: determines size of the table, there will be 2^size_order hash
* buckets
* @mean_chain_len: maximum average length for the hash buckets' list, if it is
* reached, the table will grow
+ * @known_gates: list of known mesh gates and their mpaths by the station. The
+ * gate's mpath may or may not be resolved and active.
+ *
+ * rcu_head: RCU head to free the table
*/
struct mesh_table {
/* Number of buckets will be 2^N */
@@ -132,6 +155,10 @@ struct mesh_table {
int (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl);
int size_order;
int mean_chain_len;
+ struct hlist_head *known_gates;
+ spinlock_t gates_lock;
+
+ struct rcu_head rcu_head;
};
/* Recent multicast cache */
@@ -159,156 +186,157 @@ struct rmc_entry {
};
struct mesh_rmc {
- struct rmc_entry bucket[RMC_BUCKETS];
+ struct list_head bucket[RMC_BUCKETS];
u32 idx_mask;
};
+#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-/*
- * MESH_CFG_COMP_LEN Includes:
- * - Active path selection protocol ID.
- * - Active path selection metric ID.
- * - Congestion control mode identifier.
- * - Channel precedence.
- * Does not include mesh capabilities, which may vary across nodes in the same
- * mesh
- */
-#define MESH_CFG_CMP_LEN (IEEE80211_MESH_CONFIG_LEN - 2)
-
-/* Default values, timeouts in ms */
-#define MESH_TTL 31
-#define MESH_MAX_RETR 3
-#define MESH_RET_T 100
-#define MESH_CONF_T 100
-#define MESH_HOLD_T 100
-
-#define MESH_PATH_TIMEOUT 5000
-/* Minimum interval between two consecutive PREQs originated by the same
- * interface
- */
-#define MESH_PREQ_MIN_INT 10
-#define MESH_DIAM_TRAVERSAL_TIME 50
-/* A path will be refreshed if it is used PATH_REFRESH_TIME milliseconds before
- * timing out. This way it will remain ACTIVE and no data frames will be
- * unnecesarily held in the pending queue.
- */
-#define MESH_PATH_REFRESH_TIME 1000
-#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME)
-#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units */
-
-#define MESH_MAX_PREQ_RETRIES 4
#define MESH_PATH_EXPIRE (600 * HZ)
-/* Default maximum number of established plinks per interface */
-#define MESH_MAX_ESTAB_PLINKS 32
-
/* Default maximum number of plinks per interface */
#define MESH_MAX_PLINKS 256
/* Maximum number of paths per interface */
#define MESH_MAX_MPATHS 1024
-/* Pending ANA approval */
-#define MESH_PLINK_CATEGORY 30
-#define MESH_PATH_SEL_CATEGORY 32
-#define MESH_PATH_SEL_ACTION 0
-
-/* PERR reason codes */
-#define PEER_RCODE_UNSPECIFIED 11
-#define PERR_RCODE_NO_ROUTE 12
-#define PERR_RCODE_DEST_UNREACH 13
+/* Number of frames buffered per destination for unresolved destinations */
+#define MESH_FRAME_QUEUE_LEN 10
/* Public interfaces */
/* Various */
int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
const u8 *da, const u8 *sa);
-int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
- struct ieee80211_sub_if_data *sdata, char *addr4,
- char *addr5, char *addr6);
-int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
- struct ieee80211_sub_if_data *sdata);
-bool mesh_matches_local(struct ieee802_11_elems *ie,
- struct ieee80211_sub_if_data *sdata);
+int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211s_hdr *meshhdr,
+ const char *addr4or5, const char *addr6);
+int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
+ const u8 *addr, struct ieee80211s_hdr *mesh_hdr);
+bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
+ struct ieee802_11_elems *ie);
void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
-void mesh_mgmt_ies_add(struct sk_buff *skb,
- struct ieee80211_sub_if_data *sdata);
+int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
void ieee80211s_init(void);
void ieee80211s_update_metric(struct ieee80211_local *local,
- struct sta_info *stainfo, struct sk_buff *skb);
-void ieee80211s_stop(void);
+ struct sta_info *sta, struct sk_buff *skb);
void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
-ieee80211_rx_result
-ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
-void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
+int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
+const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
+/* wrapper for ieee80211_bss_info_change_notify() */
+void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+ u32 changed);
+
+/* mesh power save */
+u32 ieee80211_mps_local_status_update(struct ieee80211_sub_if_data *sdata);
+u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
+ enum nl80211_mesh_power_mode pm);
+void ieee80211_mps_set_frame_flags(struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta,
+ struct ieee80211_hdr *hdr);
+void ieee80211_mps_sta_status_update(struct sta_info *sta);
+void ieee80211_mps_rx_h_sta_process(struct sta_info *sta,
+ struct ieee80211_hdr *hdr);
+void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
+ bool tx, bool acked);
+void ieee80211_mps_frame_release(struct sta_info *sta,
+ struct ieee802_11_elems *elems);
/* Mesh paths */
-int mesh_nexthop_lookup(struct sk_buff *skb,
- struct ieee80211_sub_if_data *sdata);
+int mesh_nexthop_lookup(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
+int mesh_nexthop_resolve(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata);
-struct mesh_path *mesh_path_lookup(u8 *dst,
- struct ieee80211_sub_if_data *sdata);
-struct mesh_path *mpp_path_lookup(u8 *dst,
- struct ieee80211_sub_if_data *sdata);
-int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata);
-struct mesh_path *mesh_path_lookup_by_idx(int idx,
- struct ieee80211_sub_if_data *sdata);
+struct mesh_path *mesh_path_lookup(struct ieee80211_sub_if_data *sdata,
+ const u8 *dst);
+struct mesh_path *mpp_path_lookup(struct ieee80211_sub_if_data *sdata,
+ const u8 *dst);
+int mpp_path_add(struct ieee80211_sub_if_data *sdata,
+ const u8 *dst, const u8 *mpp);
+struct mesh_path *
+mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx);
void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
void mesh_path_expire(struct ieee80211_sub_if_data *sdata);
-void mesh_path_flush(struct ieee80211_sub_if_data *sdata);
void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
- struct ieee80211_mgmt *mgmt, size_t len);
-int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata);
+ struct ieee80211_mgmt *mgmt, size_t len);
+struct mesh_path *
+mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst);
+
+int mesh_path_add_gate(struct mesh_path *mpath);
+int mesh_path_send_to_gates(struct mesh_path *mpath);
+int mesh_gate_num(struct ieee80211_sub_if_data *sdata);
+
/* Mesh plinks */
-void mesh_neighbour_update(u8 *hw_addr, u32 rates,
- struct ieee80211_sub_if_data *sdata, bool add);
+void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
+ u8 *hw_addr, struct ieee802_11_elems *ie);
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
-void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
+u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata);
void mesh_plink_broken(struct sta_info *sta);
-void mesh_plink_deactivate(struct sta_info *sta);
-int mesh_plink_open(struct sta_info *sta);
-void mesh_plink_block(struct sta_info *sta);
+u32 mesh_plink_deactivate(struct sta_info *sta);
+u32 mesh_plink_open(struct sta_info *sta);
+u32 mesh_plink_block(struct sta_info *sta);
void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len,
struct ieee80211_rx_status *rx_status);
+void mesh_sta_cleanup(struct sta_info *sta);
/* Private interfaces */
/* Mesh tables */
-struct mesh_table *mesh_table_alloc(int size_order);
-void mesh_table_free(struct mesh_table *tbl, bool free_leafs);
void mesh_mpath_table_grow(void);
void mesh_mpp_table_grow(void);
-u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata,
- struct mesh_table *tbl);
/* Mesh paths */
-int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
- const u8 *ra, struct ieee80211_sub_if_data *sdata);
+int mesh_path_error_tx(struct ieee80211_sub_if_data *sdata,
+ u8 ttl, const u8 *target, u32 target_sn,
+ u16 target_rcode, const u8 *ra);
void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
void mesh_path_flush_pending(struct mesh_path *mpath);
void mesh_path_tx_pending(struct mesh_path *mpath);
int mesh_pathtbl_init(void);
void mesh_pathtbl_unregister(void);
-int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata);
+int mesh_path_del(struct ieee80211_sub_if_data *sdata, const u8 *addr);
void mesh_path_timer(unsigned long data);
void mesh_path_flush_by_nexthop(struct sta_info *sta);
-void mesh_path_discard_frame(struct sk_buff *skb,
- struct ieee80211_sub_if_data *sdata);
-void mesh_path_quiesce(struct ieee80211_sub_if_data *sdata);
-void mesh_path_restart(struct ieee80211_sub_if_data *sdata);
+void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
void mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata);
+bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt);
extern int mesh_paths_generation;
#ifdef CONFIG_MAC80211_MESH
-extern int mesh_allocated;
+static inline
+u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+ atomic_inc(&sdata->u.mesh.estab_plinks);
+ return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
+}
+
+static inline
+u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
+{
+ atomic_dec(&sdata->u.mesh.estab_plinks);
+ return mesh_accept_plinks_update(sdata) | BSS_CHANGED_BEACON;
+}
static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
{
return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
- atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
+ atomic_read(&sdata->u.mesh.estab_plinks);
}
static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
@@ -322,26 +350,24 @@ static inline void mesh_path_activate(struct mesh_path *mpath)
mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED;
}
-#define for_each_mesh_entry(x, p, node, i) \
- for (i = 0; i <= x->hash_mask; i++) \
- hlist_for_each_entry_rcu(node, p, &x->hash_buckets[i], list)
+static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+{
+ return sdata->u.mesh.mesh_pp_id == IEEE80211_PATH_PROTOCOL_HWMP;
+}
void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
-void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata);
-void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata);
-void mesh_plink_quiesce(struct sta_info *sta);
-void mesh_plink_restart(struct sta_info *sta);
+void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
+void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
+void ieee80211s_stop(void);
#else
-#define mesh_allocated 0
static inline void
ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
-static inline void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata)
-{}
-static inline void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata)
+static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
+{ return false; }
+static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
{}
-static inline void mesh_plink_quiesce(struct sta_info *sta) {}
-static inline void mesh_plink_restart(struct sta_info *sta) {}
+static inline void ieee80211s_stop(void) {}
#endif
#endif /* IEEE80211S_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 18:00:57 +0000