From ea08eeccae9297f7aabd2ef7f0c2517ac4549acc Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:18:26 +0000
Subject: [PATCH] write in 30M
---
kernel/net/mac80211/mesh_pathtbl.c | 89 +++++++++++++++-----------------------------
1 files changed, 31 insertions(+), 58 deletions(-)
diff --git a/kernel/net/mac80211/mesh_pathtbl.c b/kernel/net/mac80211/mesh_pathtbl.c
index c2b051e..d936ef0 100644
--- a/kernel/net/mac80211/mesh_pathtbl.c
+++ b/kernel/net/mac80211/mesh_pathtbl.c
@@ -47,32 +47,24 @@
mesh_path_free_rcu(tbl, mpath);
}
-static struct mesh_table *mesh_table_alloc(void)
+static void mesh_table_init(struct mesh_table *tbl)
{
- struct mesh_table *newtbl;
+ INIT_HLIST_HEAD(&tbl->known_gates);
+ INIT_HLIST_HEAD(&tbl->walk_head);
+ atomic_set(&tbl->entries, 0);
+ spin_lock_init(&tbl->gates_lock);
+ spin_lock_init(&tbl->walk_lock);
- newtbl = kmalloc(sizeof(struct mesh_table), GFP_ATOMIC);
- if (!newtbl)
- return NULL;
-
- INIT_HLIST_HEAD(&newtbl->known_gates);
- INIT_HLIST_HEAD(&newtbl->walk_head);
- atomic_set(&newtbl->entries, 0);
- spin_lock_init(&newtbl->gates_lock);
- spin_lock_init(&newtbl->walk_lock);
- if (rhashtable_init(&newtbl->rhead, &mesh_rht_params)) {
- kfree(newtbl);
- return NULL;
- }
-
- return newtbl;
+ /* rhashtable_init() may fail only in case of wrong
+ * mesh_rht_params
+ */
+ WARN_ON(rhashtable_init(&tbl->rhead, &mesh_rht_params));
}
static void mesh_table_free(struct mesh_table *tbl)
{
rhashtable_free_and_destroy(&tbl->rhead,
mesh_path_rht_free, tbl);
- kfree(tbl);
}
/**
@@ -238,13 +230,13 @@
struct mesh_path *
mesh_path_lookup(struct ieee80211_sub_if_data *sdata, const u8 *dst)
{
- return mpath_lookup(sdata->u.mesh.mesh_paths, dst, sdata);
+ return mpath_lookup(&sdata->u.mesh.mesh_paths, dst, sdata);
}
struct mesh_path *
mpp_path_lookup(struct ieee80211_sub_if_data *sdata, const u8 *dst)
{
- return mpath_lookup(sdata->u.mesh.mpp_paths, dst, sdata);
+ return mpath_lookup(&sdata->u.mesh.mpp_paths, dst, sdata);
}
static struct mesh_path *
@@ -281,7 +273,7 @@
struct mesh_path *
mesh_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx)
{
- return __mesh_path_lookup_by_idx(sdata->u.mesh.mesh_paths, idx);
+ return __mesh_path_lookup_by_idx(&sdata->u.mesh.mesh_paths, idx);
}
/**
@@ -296,7 +288,7 @@
struct mesh_path *
mpp_path_lookup_by_idx(struct ieee80211_sub_if_data *sdata, int idx)
{
- return __mesh_path_lookup_by_idx(sdata->u.mesh.mpp_paths, idx);
+ return __mesh_path_lookup_by_idx(&sdata->u.mesh.mpp_paths, idx);
}
/**
@@ -309,7 +301,7 @@
int err;
rcu_read_lock();
- tbl = mpath->sdata->u.mesh.mesh_paths;
+ tbl = &mpath->sdata->u.mesh.mesh_paths;
spin_lock_bh(&mpath->state_lock);
if (mpath->is_gate) {
@@ -418,7 +410,7 @@
if (!new_mpath)
return ERR_PTR(-ENOMEM);
- tbl = sdata->u.mesh.mesh_paths;
+ tbl = &sdata->u.mesh.mesh_paths;
spin_lock_bh(&tbl->walk_lock);
mpath = rhashtable_lookup_get_insert_fast(&tbl->rhead,
&new_mpath->rhash,
@@ -460,7 +452,7 @@
return -ENOMEM;
memcpy(new_mpath->mpp, mpp, ETH_ALEN);
- tbl = sdata->u.mesh.mpp_paths;
+ tbl = &sdata->u.mesh.mpp_paths;
spin_lock_bh(&tbl->walk_lock);
ret = rhashtable_lookup_insert_fast(&tbl->rhead,
@@ -489,7 +481,7 @@
void mesh_plink_broken(struct sta_info *sta)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
- struct mesh_table *tbl = sdata->u.mesh.mesh_paths;
+ struct mesh_table *tbl = &sdata->u.mesh.mesh_paths;
static const u8 bcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
struct mesh_path *mpath;
@@ -548,7 +540,7 @@
void mesh_path_flush_by_nexthop(struct sta_info *sta)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
- struct mesh_table *tbl = sdata->u.mesh.mesh_paths;
+ struct mesh_table *tbl = &sdata->u.mesh.mesh_paths;
struct mesh_path *mpath;
struct hlist_node *n;
@@ -563,7 +555,7 @@
static void mpp_flush_by_proxy(struct ieee80211_sub_if_data *sdata,
const u8 *proxy)
{
- struct mesh_table *tbl = sdata->u.mesh.mpp_paths;
+ struct mesh_table *tbl = &sdata->u.mesh.mpp_paths;
struct mesh_path *mpath;
struct hlist_node *n;
@@ -597,8 +589,8 @@
*/
void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
{
- table_flush_by_iface(sdata->u.mesh.mesh_paths);
- table_flush_by_iface(sdata->u.mesh.mpp_paths);
+ table_flush_by_iface(&sdata->u.mesh.mesh_paths);
+ table_flush_by_iface(&sdata->u.mesh.mpp_paths);
}
/**
@@ -644,7 +636,7 @@
/* flush relevant mpp entries first */
mpp_flush_by_proxy(sdata, addr);
- err = table_path_del(sdata->u.mesh.mesh_paths, sdata, addr);
+ err = table_path_del(&sdata->u.mesh.mesh_paths, sdata, addr);
sdata->u.mesh.mesh_paths_generation++;
return err;
}
@@ -682,7 +674,7 @@
struct mesh_path *gate;
bool copy = false;
- tbl = sdata->u.mesh.mesh_paths;
+ tbl = &sdata->u.mesh.mesh_paths;
rcu_read_lock();
hlist_for_each_entry_rcu(gate, &tbl->known_gates, gate_list) {
@@ -762,29 +754,10 @@
mesh_path_tx_pending(mpath);
}
-int mesh_pathtbl_init(struct ieee80211_sub_if_data *sdata)
+void mesh_pathtbl_init(struct ieee80211_sub_if_data *sdata)
{
- struct mesh_table *tbl_path, *tbl_mpp;
- int ret;
-
- tbl_path = mesh_table_alloc();
- if (!tbl_path)
- return -ENOMEM;
-
- tbl_mpp = mesh_table_alloc();
- if (!tbl_mpp) {
- ret = -ENOMEM;
- goto free_path;
- }
-
- sdata->u.mesh.mesh_paths = tbl_path;
- sdata->u.mesh.mpp_paths = tbl_mpp;
-
- return 0;
-
-free_path:
- mesh_table_free(tbl_path);
- return ret;
+ mesh_table_init(&sdata->u.mesh.mesh_paths);
+ mesh_table_init(&sdata->u.mesh.mpp_paths);
}
static
@@ -806,12 +779,12 @@
void mesh_path_expire(struct ieee80211_sub_if_data *sdata)
{
- mesh_path_tbl_expire(sdata, sdata->u.mesh.mesh_paths);
- mesh_path_tbl_expire(sdata, sdata->u.mesh.mpp_paths);
+ mesh_path_tbl_expire(sdata, &sdata->u.mesh.mesh_paths);
+ mesh_path_tbl_expire(sdata, &sdata->u.mesh.mpp_paths);
}
void mesh_pathtbl_unregister(struct ieee80211_sub_if_data *sdata)
{
- mesh_table_free(sdata->u.mesh.mesh_paths);
- mesh_table_free(sdata->u.mesh.mpp_paths);
+ mesh_table_free(&sdata->u.mesh.mesh_paths);
+ mesh_table_free(&sdata->u.mesh.mpp_paths);
}
--
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