/*
- * Copyright (c) 2008 open80211s Ltd.
+ * Copyright (c) 2008, 2009 open80211s Ltd.
* Authors: Luis Carlos Cobo <luisca@cozybit.com>
* Javier Cardona <javier@cozybit.com>
*
*
*
*
- * @MESH_PATH_ACTIVE: the mesh path is can be used for forwarding
- * @MESH_PATH_RESOLVED: the discovery process is running for this mesh path
- * @MESH_PATH_DSN_VALID: the mesh path contains a valid destination sequence
+ * @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
* @MESH_PATH_FIXED: the mesh path has been manually set and should not be
* modified
* @MESH_PATH_RESOLVED: the mesh path can has been resolved
*
- * MESH_PATH_RESOLVED and MESH_PATH_DELETE are used by the mesh path timer to
+ * MESH_PATH_RESOLVED is used by the mesh path timer to
* decide when to stop or cancel the mesh path discovery.
*/
enum mesh_path_flags {
MESH_PATH_ACTIVE = BIT(0),
MESH_PATH_RESOLVING = BIT(1),
- MESH_PATH_DSN_VALID = BIT(2),
+ MESH_PATH_SN_VALID = BIT(2),
MESH_PATH_FIXED = BIT(3),
MESH_PATH_RESOLVED = BIT(4),
};
/**
+ * enum mesh_deferred_task_flags - mac80211 mesh deferred tasks
+ *
+ *
+ *
+ * @MESH_WORK_HOUSEKEEPING: run the periodic mesh housekeeping tasks
+ * @MESH_WORK_GROW_MPATH_TABLE: the mesh path table is full and needs
+ * to grow.
+ * @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
+ */
+enum mesh_deferred_task_flags {
+ MESH_WORK_HOUSEKEEPING,
+ MESH_WORK_GROW_MPATH_TABLE,
+ MESH_WORK_GROW_MPP_TABLE,
+ MESH_WORK_ROOT,
+};
+
+/**
* struct mesh_path - mac80211 mesh path structure
*
* @dst: mesh path destination mac address
- * @dev: mesh path device
+ * @sdata: mesh subif
* @next_hop: mesh neighbor to which frames for this destination will be
* forwarded
* @timer: mesh path discovery timer
* @frame_queue: pending queue for frames sent to this destination while the
* path is unresolved
- * @dsn: destination sequence number of the destination
+ * @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
* retry
* @discovery_retries: number of discovery retries
* @flags: mesh path flags, as specified on &enum mesh_path_flags
- * @state_lock: mesh pat state lock
+ * @state_lock: mesh path state lock
*
*
- * The combination of dst and dev is unique in the mesh path table. Since the
+ * The combination of dst and sdata is unique in the mesh path table. Since the
* next_hop STA is only protected by RCU as well, deleting the STA must also
* remove/substitute the mesh_path structure and wait until that is no longer
* reachable before destroying the STA completely.
*/
struct mesh_path {
u8 dst[ETH_ALEN];
- struct net_device *dev;
+ u8 mpp[ETH_ALEN]; /* used for MPP or MAP */
+ struct ieee80211_sub_if_data *sdata;
struct sta_info *next_hop;
struct timer_list timer;
struct sk_buff_head frame_queue;
struct rcu_head rcu;
- u32 dsn;
+ u32 sn;
u32 metric;
u8 hop_count;
unsigned long exp_time;
};
-/* Mesh IEs constants */
-#define MESH_CFG_LEN 19
-
/*
* MESH_CFG_COMP_LEN Includes:
* - Active path selection protocol ID.
* Does not include mesh capabilities, which may vary across nodes in the same
* mesh
*/
-#define MESH_CFG_CMP_LEN 17
+#define MESH_CFG_CMP_LEN (IEEE80211_MESH_CONFIG_LEN - 2)
/* Default values, timeouts in ms */
-#define MESH_TTL 5
+#define MESH_TTL 31
#define MESH_MAX_RETR 3
#define MESH_RET_T 100
#define MESH_CONF_T 100
*/
#define MESH_PREQ_MIN_INT 10
#define MESH_DIAM_TRAVERSAL_TIME 50
-/* Paths will be refreshed if they are closer than PATH_REFRESH_TIME to their
- * expiration
+/* 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)
#define MESH_MAX_MPATHS 1024
/* Pending ANA approval */
-#define PLINK_CATEGORY 30
+#define MESH_PLINK_CATEGORY 30
#define MESH_PATH_SEL_CATEGORY 32
+#define MESH_PATH_SEL_ACTION 0
-/* Mesh Header Flags */
-#define IEEE80211S_FLAGS_AE 0x3
+/* PERR reason codes */
+#define PEER_RCODE_UNSPECIFIED 11
+#define PERR_RCODE_NO_ROUTE 12
+#define PERR_RCODE_DEST_UNREACH 13
/* Public interfaces */
/* Various */
-u8 mesh_id_hash(u8 *mesh_id, int mesh_id_len);
-int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr);
+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);
+ struct ieee80211_sub_if_data *sdata, char *addr4,
+ char *addr5, char *addr6);
int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
- struct net_device *dev);
-bool mesh_matches_local(struct ieee802_11_elems *ie, struct net_device *dev);
-void mesh_ids_set_default(struct ieee80211_if_sta *sta);
-void mesh_mgmt_ies_add(struct sk_buff *skb, struct net_device *dev);
-void mesh_rmc_free(struct net_device *dev);
-int mesh_rmc_init(struct net_device *dev);
+ struct ieee80211_sub_if_data *sdata);
+bool mesh_matches_local(struct ieee802_11_elems *ie,
+ struct ieee80211_sub_if_data *sdata);
+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);
+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);
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);
+void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
/* Mesh paths */
-int mesh_nexthop_lookup(struct sk_buff *skb, struct net_device *dev);
-void mesh_path_start_discovery(struct net_device *dev);
-struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev);
-struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev);
+int mesh_nexthop_lookup(struct sk_buff *skb,
+ struct ieee80211_sub_if_data *sdata);
+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);
void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop);
-void mesh_path_expire(struct net_device *dev);
-void mesh_path_flush(struct net_device *dev);
-void mesh_rx_path_sel_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
- size_t len);
-int mesh_path_add(u8 *dst, struct net_device *dev);
+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);
/* Mesh plinks */
-void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev,
- bool add);
-bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie,
- struct net_device *dev);
+void mesh_neighbour_update(u8 *hw_addr, u32 rates,
+ struct ieee80211_sub_if_data *sdata, bool add);
+bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie);
void 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);
-int mesh_plink_close(struct sta_info *sta);
void mesh_plink_block(struct sta_info *sta);
-void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt,
- size_t len, struct ieee80211_rx_status *rx_status);
+void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt, size_t len,
+ struct ieee80211_rx_status *rx_status);
/* Private interfaces */
/* Mesh tables */
struct mesh_table *mesh_table_alloc(int size_order);
void mesh_table_free(struct mesh_table *tbl, bool free_leafs);
-struct mesh_table *mesh_table_grow(struct mesh_table *tbl);
-u32 mesh_table_hash(u8 *addr, struct net_device *dev, struct mesh_table *tbl);
+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 *dest, __le32 dest_dsn, u8 *ra,
- struct net_device *dev);
+int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
+ const u8 *ra, struct ieee80211_sub_if_data *sdata);
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 net_device *dev);
+int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata);
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 net_device *dev);
+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_tx_root_frame(struct ieee80211_sub_if_data *sdata);
+
+extern int mesh_paths_generation;
#ifdef CONFIG_MAC80211_MESH
extern int mesh_allocated;
static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
{
- return sdata->u.sta.mshcfg.dot11MeshMaxPeerLinks -
- atomic_read(&sdata->u.sta.mshstats.estab_plinks);
+ return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
+ atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
}
static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
for (i = 0; i <= x->hash_mask; i++) \
hlist_for_each_entry_rcu(node, p, &x->hash_buckets[i], list)
+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);
#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 void mesh_plink_quiesce(struct sta_info *sta) {}
+static inline void mesh_plink_restart(struct sta_info *sta) {}
#endif
#endif /* IEEE80211S_H */
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