#include <linux/etherdevice.h>#include <linux/list.h>#include <linux/random.h>#include <linux/slab.h>#include <linux/spinlock.h>#include <linux/string.h>#include <net/mac80211.h>#include "wme.h"#include "ieee80211_i.h"#include "mesh.h"
Go to the source code of this file.
Define Documentation
| #define for_each_mesh_entry | ( | tbl, | |
| p, | |||
| node, | |||
| i | |||
| ) |
for (i = 0; i <= tbl->hash_mask; i++) \ hlist_for_each_entry_rcu(node, p, &tbl->hash_buckets[i], list)
Definition at line 80 of file kernel-3.2/mesh_pathtbl.c.
| #define INIT_PATHS_SIZE_ORDER 2 |
Definition at line 28 of file kernel-3.2/mesh_pathtbl.c.
| #define MEAN_CHAIN_LEN 2 |
Definition at line 31 of file kernel-3.2/mesh_pathtbl.c.
Definition at line 24 of file kernel-3.2/mesh_pathtbl.c.
| #define MPATH_EXPIRED | ( | mpath | ) |
((mpath->flags & MESH_PATH_ACTIVE) && \ time_after(jiffies, mpath->exp_time) && \ !(mpath->flags & MESH_PATH_FIXED))
Definition at line 33 of file kernel-3.2/mesh_pathtbl.c.
Function Documentation
| static void __mesh_path_del | ( | struct mesh_table * | tbl, |
| struct mpath_node * | node | ||
| ) | [static] |
Definition at line 791 of file kernel-3.2/mesh_pathtbl.c.
| static void __mesh_table_free | ( | struct mesh_table * | tbl | ) | [static] |
Definition at line 122 of file kernel-3.2/mesh_pathtbl.c.
| static DEFINE_RWLOCK | ( | pathtbl_resize_lock | ) | [static] |
| static int mesh_gate_add | ( | struct mesh_table * | tbl, |
| struct mesh_path * | mpath | ||
| ) | [static] |
mesh_gate_add - mark mpath as path to a mesh gate and add to known_gates : table which contains known_gates list : mpath to known mesh gate
Returns: 0 on success
Definition at line 433 of file kernel-3.2/mesh_pathtbl.c.
| static int mesh_gate_del | ( | struct mesh_table * | tbl, |
| struct mesh_path * | mpath | ||
| ) | [static] |
mesh_gate_del - remove a mesh gate from the list of known gates : table which holds our list of known gates : gate mpath
Returns: 0 on success
Locking: must be called inside rcu_read_lock() section
Definition at line 479 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_gate_node_reclaim | ( | struct rcu_head * | rp | ) | [static] |
Definition at line 419 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_gate_num | ( | struct ieee80211_sub_if_data * | sdata | ) |
mesh_gate_num - number of gates known to this interface : subif data
Definition at line 517 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_mpath_table_grow | ( | void | ) |
Definition at line 622 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_mpp_table_grow | ( | void | ) |
Definition at line 643 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_path_add | ( | u8 * | dst, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) |
mesh_path_add - allocate and add a new path to the mesh path table : destination address of the path (ETH_ALEN length) : local subif
Returns: 0 on success
State: the initial state of the new path is set to 0
Definition at line 531 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_path_add_gate | ( | struct mesh_path * | mpath | ) |
mesh_path_add_gate - add the given mpath to a mesh gate to our path table : gate path to add to table
Definition at line 508 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_assign_nexthop | ( | struct mesh_path * | mpath, |
| struct sta_info * | sta | ||
| ) |
mesh_path_assign_nexthop - update mesh path next hop
: mesh path to update : next hop to assign
Locking: mpath->state_lock must be held when calling this function
Definition at line 210 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_path_del | ( | u8 * | addr, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) |
mesh_path_del - delete a mesh path from the table
: dst address (ETH_ALEN length) : local subif
Returns: 0 if successful
Definition at line 888 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_discard_frame | ( | struct sk_buff * | skb, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) |
mesh_path_discard_frame - discard a frame whose path could not be resolved
: frame to discard : network subif the frame was to be sent through
If the frame was being forwarded from another MP, a PERR frame will be sent to the precursor. The precursor's address (i.e. the previous hop) was saved in addr1 of the frame-to-be-forwarded, and would only be overwritten once the destination is successfully resolved.
Locking: the function must me called within a rcu_read_lock region
Definition at line 1001 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_expire | ( | struct ieee80211_sub_if_data * | sdata | ) |
Definition at line 1146 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_fix_nexthop | ( | struct mesh_path * | mpath, |
| struct sta_info * | next_hop | ||
| ) |
mesh_path_fix_nexthop - force a specific next hop for a mesh path
: the mesh path to modify : the next hop to force
Locking: this function must be called holding mpath->state_lock
Definition at line 1053 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_flush_by_iface | ( | struct ieee80211_sub_if_data * | sdata | ) |
mesh_path_flush_by_iface - Deletes all mesh paths associated with a given iface
This function deletes both mesh paths as well as mesh portal paths.
- interface data to match
Definition at line 866 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_flush_by_nexthop | ( | struct sta_info * | sta | ) |
mesh_path_flush_by_nexthop - Deletes mesh paths if their next hop matches
- mesh peer to match
RCU notes: this function is called when a mesh plink transitions from PLINK_ESTAB to any other state, since PLINK_ESTAB state is the only one that allows path creation. This will happen before the sta can be freed (because sta_info_destroy() calls this) so any reader in a rcu read block will be protected against the plink disappearing.
Definition at line 816 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_flush_pending | ( | struct mesh_path * | mpath | ) |
mesh_path_flush_pending - free the pending queue of a mesh path
: mesh path whose queue has to be freed
Locking: the function must me called within a rcu_read_lock region
Definition at line 1037 of file kernel-3.2/mesh_pathtbl.c.
| struct mesh_path* mesh_path_lookup | ( | u8 * | dst, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) | [read] |
mesh_path_lookup - look up a path in the mesh path table : hardware address (ETH_ALEN length) of destination : local subif
Returns: pointer to the mesh path structure, or NULL if not found
Locking: must be called within a read rcu section.
Definition at line 375 of file kernel-3.2/mesh_pathtbl.c.
| struct mesh_path* mesh_path_lookup_by_idx | ( | int | idx, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) | [read] |
mesh_path_lookup_by_idx - look up a path in the mesh path table by its index : index : local subif, or NULL for all entries
Returns: pointer to the mesh path structure, or NULL if not found.
Locking: must be called within a read rcu section.
Definition at line 395 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_path_move_to_queue | ( | struct mesh_path * | gate_mpath, |
| struct mesh_path * | from_mpath, | ||
| bool | copy | ||
| ) | [static] |
mesh_path_move_to_queue - Move or copy frames from one mpath queue to another
This function is used to transfer or copy frames from an unresolved mpath to a gate mpath. The function also adds the Address Extension field and updates the next hop.
If a frame already has an Address Extension field, only the next hop and destination addresses are updated.
The gate mpath must be an active mpath with a valid mpath->next_hop.
: An active mpath the frames will be sent to (i.e. the gate) : The failed mpath : When true, copy all the frames to the new mpath queue. When false, move them.
Definition at line 293 of file kernel-3.2/mesh_pathtbl.c.
| static int mesh_path_node_copy | ( | struct hlist_node * | p, |
| struct mesh_table * | newtbl | ||
| ) | [static] |
Definition at line 1080 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_path_node_free | ( | struct hlist_node * | p, |
| bool | free_leafs | ||
| ) | [static] |
Definition at line 1067 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_path_node_reclaim | ( | struct rcu_head * | rp | ) | [static] |
Definition at line 779 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_path_send_to_gates | ( | struct mesh_path * | mpath | ) |
mesh_path_send_to_gates - sends pending frames to all known mesh gates
: mesh path whose queue will be emptied
If there is only one gate, the frames are transferred from the failed mpath queue to that gate's queue. If there are more than one gates, the frames are copied from each gate to the next. After frames are copied, the mpath queues are emptied onto the transmission queue.
Definition at line 946 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_path_tx_pending | ( | struct mesh_path * | mpath | ) |
mesh_path_tx_pending - sends pending frames in a mesh path queue
: mesh path to activate
Locking: the state_lock of the mpath structure must NOT be held when calling this function.
Definition at line 929 of file kernel-3.2/mesh_pathtbl.c.
| int mesh_pathtbl_init | ( | void | ) |
Definition at line 1099 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_pathtbl_unregister | ( | void | ) |
Definition at line 1168 of file kernel-3.2/mesh_pathtbl.c.
| void mesh_plink_broken | ( | struct sta_info * | sta | ) |
mesh_plink_broken - deactivates paths and sends perr when a link breaks
: broken peer link
This function must be called from the rate control algorithm if enough delivery errors suggest that a peer link is no longer usable.
Definition at line 749 of file kernel-3.2/mesh_pathtbl.c.
| static struct mesh_table* mesh_table_alloc | ( | int | size_order | ) | [static, read] |
Definition at line 85 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_table_free | ( | struct mesh_table * | tbl, |
| bool | free_leafs | ||
| ) | [static] |
Definition at line 129 of file kernel-3.2/mesh_pathtbl.c.
| static void mesh_table_free_rcu | ( | struct rcu_head * | rcu | ) | [static] |
Definition at line 615 of file kernel-3.2/mesh_pathtbl.c.
| static int mesh_table_grow | ( | struct mesh_table * | oldtbl, |
| struct mesh_table * | newtbl | ||
| ) | [static] |
Definition at line 159 of file kernel-3.2/mesh_pathtbl.c.
| static u32 mesh_table_hash | ( | u8 * | addr, |
| struct ieee80211_sub_if_data * | sdata, | ||
| struct mesh_table * | tbl | ||
| ) | [static] |
Definition at line 192 of file kernel-3.2/mesh_pathtbl.c.
| int mpp_path_add | ( | u8 * | dst, |
| u8 * | mpp, | ||
| struct ieee80211_sub_if_data * | sdata | ||
| ) |
Definition at line 663 of file kernel-3.2/mesh_pathtbl.c.
| struct mesh_path* mpp_path_lookup | ( | u8 * | dst, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) | [read] |
Definition at line 380 of file kernel-3.2/mesh_pathtbl.c.
| static struct mesh_path* path_lookup | ( | struct mesh_table * | tbl, |
| u8 * | dst, | ||
| struct ieee80211_sub_if_data * | sdata | ||
| ) | [static, read] |
Definition at line 342 of file kernel-3.2/mesh_pathtbl.c.
| static void prepare_for_gate | ( | struct sk_buff * | skb, |
| char * | dst_addr, | ||
| struct mesh_path * | gate_mpath | ||
| ) | [static] |
Definition at line 236 of file kernel-3.2/mesh_pathtbl.c.
| static struct mesh_table* resize_dereference_mesh_paths | ( | void | ) | [static, read] |
Definition at line 60 of file kernel-3.2/mesh_pathtbl.c.
| static struct mesh_table* resize_dereference_mpp_paths | ( | void | ) | [static, read] |
Definition at line 66 of file kernel-3.2/mesh_pathtbl.c.
| static void table_flush_by_iface | ( | struct mesh_table * | tbl, |
| struct ieee80211_sub_if_data * | sdata | ||
| ) | [static] |
Definition at line 839 of file kernel-3.2/mesh_pathtbl.c.
Variable Documentation
struct mesh_table __rcu* mesh_paths [static] |
Definition at line 46 of file kernel-3.2/mesh_pathtbl.c.
Definition at line 49 of file kernel-3.2/mesh_pathtbl.c.
struct mesh_table __rcu* mpp_paths [static] |
Definition at line 47 of file kernel-3.2/mesh_pathtbl.c.