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Diffstat (limited to 'net/mac80211/mesh_pathtbl.c')
-rw-r--r--net/mac80211/mesh_pathtbl.c89
1 files changed, 46 insertions, 43 deletions
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 2ce4c4023a97..6b3c4e119c63 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -24,9 +24,12 @@
/* Keep the mean chain length below this constant */
#define MEAN_CHAIN_LEN 2
-#define MPATH_EXPIRED(mpath) ((mpath->flags & MESH_PATH_ACTIVE) && \
- time_after(jiffies, mpath->exp_time) && \
- !(mpath->flags & MESH_PATH_FIXED))
+static inline bool mpath_expired(struct mesh_path *mpath)
+{
+ return (mpath->flags & MESH_PATH_ACTIVE) &&
+ time_after(jiffies, mpath->exp_time) &&
+ !(mpath->flags & MESH_PATH_FIXED);
+}
struct mpath_node {
struct hlist_node list;
@@ -185,8 +188,8 @@ static u32 mesh_table_hash(const u8 *addr, struct ieee80211_sub_if_data *sdata,
struct mesh_table *tbl)
{
/* Use last four bytes of hw addr and interface index as hash index */
- return jhash_2words(*(u32 *)(addr+2), sdata->dev->ifindex, tbl->hash_rnd)
- & tbl->hash_mask;
+ return jhash_2words(*(u32 *)(addr+2), sdata->dev->ifindex,
+ tbl->hash_rnd) & tbl->hash_mask;
}
@@ -339,7 +342,7 @@ static struct mesh_path *mpath_lookup(struct mesh_table *tbl, const u8 *dst,
mpath = node->mpath;
if (mpath->sdata == sdata &&
ether_addr_equal(dst, mpath->dst)) {
- if (MPATH_EXPIRED(mpath)) {
+ if (mpath_expired(mpath)) {
spin_lock_bh(&mpath->state_lock);
mpath->flags &= ~MESH_PATH_ACTIVE;
spin_unlock_bh(&mpath->state_lock);
@@ -352,20 +355,21 @@ static struct mesh_path *mpath_lookup(struct mesh_table *tbl, const u8 *dst,
/**
* mesh_path_lookup - look up a path in the mesh path table
- * @dst: hardware address (ETH_ALEN length) of destination
* @sdata: local subif
+ * @dst: hardware address (ETH_ALEN length) of destination
*
* Returns: pointer to the mesh path structure, or NULL if not found
*
* Locking: must be called within a read rcu section.
*/
-struct mesh_path *mesh_path_lookup(const u8 *dst,
- struct ieee80211_sub_if_data *sdata)
+struct mesh_path *
+mesh_path_lookup(struct ieee80211_sub_if_data *sdata, const u8 *dst)
{
return mpath_lookup(rcu_dereference(mesh_paths), dst, sdata);
}
-struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
+struct mesh_path *
+mpp_path_lookup(struct ieee80211_sub_if_data *sdata, const u8 *dst)
{
return mpath_lookup(rcu_dereference(mpp_paths), dst, sdata);
}
@@ -380,7 +384,8 @@ struct mesh_path *mpp_path_lookup(u8 *dst, struct ieee80211_sub_if_data *sdata)
*
* Locking: must be called within a read rcu section.
*/
-struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data *sdata)
+struct mesh_path *
+mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx)
{
struct mesh_table *tbl = rcu_dereference(mesh_paths);
struct mpath_node *node;
@@ -392,7 +397,7 @@ struct mesh_path *mesh_path_lookup_by_idx(int idx, struct ieee80211_sub_if_data
if (sdata && node->mpath->sdata != sdata)
continue;
if (j++ == idx) {
- if (MPATH_EXPIRED(node->mpath)) {
+ if (mpath_expired(node->mpath)) {
spin_lock_bh(&node->mpath->state_lock);
node->mpath->flags &= ~MESH_PATH_ACTIVE;
spin_unlock_bh(&node->mpath->state_lock);
@@ -436,11 +441,10 @@ int mesh_path_add_gate(struct mesh_path *mpath)
spin_lock_bh(&tbl->gates_lock);
hlist_add_head_rcu(&new_gate->list, tbl->known_gates);
spin_unlock_bh(&tbl->gates_lock);
- rcu_read_unlock();
mpath_dbg(mpath->sdata,
"Mesh path: Recorded new gate: %pM. %d known gates\n",
mpath->dst, mpath->sdata->u.mesh.num_gates);
- return 0;
+ err = 0;
err_rcu:
rcu_read_unlock();
return err;
@@ -451,30 +455,27 @@ err_rcu:
* @tbl: table which holds our list of known gates
* @mpath: gate mpath
*
- * Returns: 0 on success
- *
* Locking: must be called inside rcu_read_lock() section
*/
-static int mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)
+static void mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)
{
struct mpath_node *gate;
struct hlist_node *p, *q;
- hlist_for_each_entry_safe(gate, p, q, tbl->known_gates, list)
- if (gate->mpath == mpath) {
- spin_lock_bh(&tbl->gates_lock);
- hlist_del_rcu(&gate->list);
- kfree_rcu(gate, rcu);
- spin_unlock_bh(&tbl->gates_lock);
- mpath->sdata->u.mesh.num_gates--;
- mpath->is_gate = false;
- mpath_dbg(mpath->sdata,
- "Mesh path: Deleted gate: %pM. %d known gates\n",
- mpath->dst, mpath->sdata->u.mesh.num_gates);
- break;
- }
-
- return 0;
+ hlist_for_each_entry_safe(gate, p, q, tbl->known_gates, list) {
+ if (gate->mpath != mpath)
+ continue;
+ spin_lock_bh(&tbl->gates_lock);
+ hlist_del_rcu(&gate->list);
+ kfree_rcu(gate, rcu);
+ spin_unlock_bh(&tbl->gates_lock);
+ mpath->sdata->u.mesh.num_gates--;
+ mpath->is_gate = false;
+ mpath_dbg(mpath->sdata,
+ "Mesh path: Deleted gate: %pM. %d known gates\n",
+ mpath->dst, mpath->sdata->u.mesh.num_gates);
+ break;
+ }
}
/**
@@ -488,14 +489,14 @@ int mesh_gate_num(struct ieee80211_sub_if_data *sdata)
/**
* mesh_path_add - allocate and add a new path to the mesh path table
- * @addr: destination address of the path (ETH_ALEN length)
+ * @dst: destination address of the path (ETH_ALEN length)
* @sdata: local subif
*
* Returns: 0 on success
*
* State: the initial state of the new path is set to 0
*/
-int mesh_path_add(const u8 *dst, struct ieee80211_sub_if_data *sdata)
+int mesh_path_add(struct ieee80211_sub_if_data *sdata, const u8 *dst)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
@@ -630,7 +631,8 @@ void mesh_mpp_table_grow(void)
write_unlock_bh(&pathtbl_resize_lock);
}
-int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
+int mpp_path_add(struct ieee80211_sub_if_data *sdata,
+ const u8 *dst, const u8 *mpp)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
@@ -739,9 +741,10 @@ void mesh_plink_broken(struct sta_info *sta)
mpath->flags &= ~MESH_PATH_ACTIVE;
++mpath->sn;
spin_unlock_bh(&mpath->state_lock);
- mesh_path_error_tx(sdata->u.mesh.mshcfg.element_ttl,
- mpath->dst, cpu_to_le32(mpath->sn),
- reason, bcast, sdata);
+ mesh_path_error_tx(sdata,
+ sdata->u.mesh.mshcfg.element_ttl,
+ mpath->dst, cpu_to_le32(mpath->sn),
+ reason, bcast);
}
}
rcu_read_unlock();
@@ -856,7 +859,7 @@ void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
*
* Returns: 0 if successful
*/
-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)
{
struct mesh_table *tbl;
struct mesh_path *mpath;
@@ -965,8 +968,8 @@ int mesh_path_send_to_gates(struct mesh_path *mpath)
*
* Locking: the function must me called within a rcu_read_lock region
*/
-void mesh_path_discard_frame(struct sk_buff *skb,
- struct ieee80211_sub_if_data *sdata)
+void mesh_path_discard_frame(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
{
kfree_skb(skb);
sdata->u.mesh.mshstats.dropped_frames_no_route++;
@@ -984,7 +987,7 @@ void mesh_path_flush_pending(struct mesh_path *mpath)
struct sk_buff *skb;
while ((skb = skb_dequeue(&mpath->frame_queue)) != NULL)
- mesh_path_discard_frame(skb, mpath->sdata);
+ mesh_path_discard_frame(mpath->sdata, skb);
}
/**
@@ -1105,7 +1108,7 @@ void mesh_path_expire(struct ieee80211_sub_if_data *sdata)
if ((!(mpath->flags & MESH_PATH_RESOLVING)) &&
(!(mpath->flags & MESH_PATH_FIXED)) &&
time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE))
- mesh_path_del(mpath->dst, mpath->sdata);
+ mesh_path_del(mpath->sdata, mpath->dst);
}
rcu_read_unlock();
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 12:39:47 +0300