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Commit 7aadf889 authored by Marek Lindner's avatar Marek Lindner
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batman-adv: remove extra layer between hash and hash element - hash bucket 

Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
parent 39901e71
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Showing with 298 additions and 294 deletions
net/batman-adv/hash.c
View file @ 7aadf889
...@@ -68,11 +68,3 @@ struct hashtable_t *hash_new(int size) ...@@ -68,11 +68,3 @@ struct hashtable_t *hash_new(int size)
kfree(hash); kfree(hash);
return NULL; return NULL;
} }
void bucket_free_rcu(struct rcu_head *rcu)
{
struct element_t *bucket;
bucket = container_of(rcu, struct element_t, rcu);
kfree(bucket);
}
net/batman-adv/hash.h
View file @ 7aadf889
...@@ -28,19 +28,13 @@ ...@@ -28,19 +28,13 @@
* compare 2 element datas for their keys, * compare 2 element datas for their keys,
* return 0 if same and not 0 if not * return 0 if same and not 0 if not
* same */ * same */
typedef int (*hashdata_compare_cb)(void *, void *); typedef int (*hashdata_compare_cb)(struct hlist_node *, void *);
/* the hashfunction, should return an index /* the hashfunction, should return an index
* based on the key in the data of the first * based on the key in the data of the first
* argument and the size the second */ * argument and the size the second */
typedef int (*hashdata_choose_cb)(void *, int); typedef int (*hashdata_choose_cb)(void *, int);
typedef void (*hashdata_free_cb)(void *, void *); typedef void (*hashdata_free_cb)(struct hlist_node *, void *);
struct element_t {
void *data; /* pointer to the data */
struct hlist_node hlist; /* bucket list pointer */
struct rcu_head rcu;
};
struct hashtable_t { struct hashtable_t {
struct hlist_head *table; /* the hashtable itself with the buckets */ struct hlist_head *table; /* the hashtable itself with the buckets */
...@@ -54,8 +48,6 @@ struct hashtable_t *hash_new(int size); ...@@ -54,8 +48,6 @@ struct hashtable_t *hash_new(int size);
/* free only the hashtable and the hash itself. */ /* free only the hashtable and the hash itself. */
void hash_destroy(struct hashtable_t *hash); void hash_destroy(struct hashtable_t *hash);
void bucket_free_rcu(struct rcu_head *rcu);
/* remove the hash structure. if hashdata_free_cb != NULL, this function will be /* remove the hash structure. if hashdata_free_cb != NULL, this function will be
* called to remove the elements inside of the hash. if you don't remove the * called to remove the elements inside of the hash. if you don't remove the
* elements, memory might be leaked. */ * elements, memory might be leaked. */
...@@ -63,8 +55,7 @@ static inline void hash_delete(struct hashtable_t *hash, ...@@ -63,8 +55,7 @@ static inline void hash_delete(struct hashtable_t *hash,
hashdata_free_cb free_cb, void *arg) hashdata_free_cb free_cb, void *arg)
{ {
struct hlist_head *head; struct hlist_head *head;
struct hlist_node *walk, *safe; struct hlist_node *node, *node_tmp;
struct element_t *bucket;
spinlock_t *list_lock; /* spinlock to protect write access */ spinlock_t *list_lock; /* spinlock to protect write access */
int i; int i;
...@@ -73,12 +64,11 @@ static inline void hash_delete(struct hashtable_t *hash, ...@@ -73,12 +64,11 @@ static inline void hash_delete(struct hashtable_t *hash,
list_lock = &hash->list_locks[i]; list_lock = &hash->list_locks[i];
spin_lock_bh(list_lock); spin_lock_bh(list_lock);
hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) { hlist_for_each_safe(node, node_tmp, head) {
if (free_cb) hlist_del_rcu(node);
free_cb(bucket->data, arg);
hlist_del_rcu(walk); if (free_cb)
call_rcu(&bucket->rcu, bucket_free_rcu); free_cb(node, arg);
} }
spin_unlock_bh(list_lock); spin_unlock_bh(list_lock);
} }
...@@ -89,12 +79,12 @@ static inline void hash_delete(struct hashtable_t *hash, ...@@ -89,12 +79,12 @@ static inline void hash_delete(struct hashtable_t *hash,
/* adds data to the hashtable. returns 0 on success, -1 on error */ /* adds data to the hashtable. returns 0 on success, -1 on error */
static inline int hash_add(struct hashtable_t *hash, static inline int hash_add(struct hashtable_t *hash,
hashdata_compare_cb compare, hashdata_compare_cb compare,
hashdata_choose_cb choose, void *data) hashdata_choose_cb choose,
void *data, struct hlist_node *data_node)
{ {
int index; int index;
struct hlist_head *head; struct hlist_head *head;
struct hlist_node *walk, *safe; struct hlist_node *node;
struct element_t *bucket;
spinlock_t *list_lock; /* spinlock to protect write access */ spinlock_t *list_lock; /* spinlock to protect write access */
if (!hash) if (!hash)
...@@ -105,21 +95,17 @@ static inline int hash_add(struct hashtable_t *hash, ...@@ -105,21 +95,17 @@ static inline int hash_add(struct hashtable_t *hash,
list_lock = &hash->list_locks[index]; list_lock = &hash->list_locks[index];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) { __hlist_for_each_rcu(node, head) {
if (compare(bucket->data, data)) if (!compare(node, data))
continue;
goto err_unlock; goto err_unlock;
} }
rcu_read_unlock(); rcu_read_unlock();
/* no duplicate found in list, add new element */ /* no duplicate found in list, add new element */
bucket = kmalloc(sizeof(struct element_t), GFP_ATOMIC);
if (!bucket)
goto err;
bucket->data = data;
spin_lock_bh(list_lock); spin_lock_bh(list_lock);
hlist_add_head_rcu(&bucket->hlist, head); hlist_add_head_rcu(data_node, head);
spin_unlock_bh(list_lock); spin_unlock_bh(list_lock);
return 0; return 0;
...@@ -139,8 +125,7 @@ static inline void *hash_remove(struct hashtable_t *hash, ...@@ -139,8 +125,7 @@ static inline void *hash_remove(struct hashtable_t *hash,
hashdata_choose_cb choose, void *data) hashdata_choose_cb choose, void *data)
{ {
size_t index; size_t index;
struct hlist_node *walk; struct hlist_node *node;
struct element_t *bucket;
struct hlist_head *head; struct hlist_head *head;
void *data_save = NULL; void *data_save = NULL;
...@@ -148,49 +133,17 @@ static inline void *hash_remove(struct hashtable_t *hash, ...@@ -148,49 +133,17 @@ static inline void *hash_remove(struct hashtable_t *hash,
head = &hash->table[index]; head = &hash->table[index];
spin_lock_bh(&hash->list_locks[index]); spin_lock_bh(&hash->list_locks[index]);
hlist_for_each_entry(bucket, walk, head, hlist) { hlist_for_each(node, head) {
if (compare(bucket->data, data)) { if (!compare(node, data))
data_save = bucket->data; continue;
hlist_del_rcu(walk);
call_rcu(&bucket->rcu, bucket_free_rcu); data_save = node;
hlist_del_rcu(node);
break; break;
} }
}
spin_unlock_bh(&hash->list_locks[index]); spin_unlock_bh(&hash->list_locks[index]);
return data_save; return data_save;
} }
/**
* finds data, based on the key in keydata. returns the found data on success,
* or NULL on error
*
* caller must lock with rcu_read_lock() / rcu_read_unlock()
**/
static inline void *hash_find(struct hashtable_t *hash,
hashdata_compare_cb compare,
hashdata_choose_cb choose, void *keydata)
{
int index;
struct hlist_head *head;
struct hlist_node *walk;
struct element_t *bucket;
void *bucket_data = NULL;
if (!hash)
return NULL;
index = choose(keydata , hash->size);
head = &hash->table[index];
hlist_for_each_entry(bucket, walk, head, hlist) {
if (compare(bucket->data, keydata)) {
bucket_data = bucket->data;
break;
}
}
return bucket_data;
}
#endif /* _NET_BATMAN_ADV_HASH_H_ */ #endif /* _NET_BATMAN_ADV_HASH_H_ */
net/batman-adv/icmp_socket.c
View file @ 7aadf889
...@@ -222,14 +222,11 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff, ...@@ -222,14 +222,11 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, orig_node = orig_hash_find(bat_priv, icmp_packet->dst);
compare_orig, choose_orig,
icmp_packet->dst));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
......
net/batman-adv/originator.c
View file @ 7aadf889
...@@ -140,9 +140,8 @@ void orig_node_free_ref(struct kref *refcount) ...@@ -140,9 +140,8 @@ void orig_node_free_ref(struct kref *refcount)
void originator_free(struct bat_priv *bat_priv) void originator_free(struct bat_priv *bat_priv)
{ {
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk, *safe; struct hlist_node *node, *node_tmp;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
spinlock_t *list_lock; /* spinlock to protect write access */ spinlock_t *list_lock; /* spinlock to protect write access */
struct orig_node *orig_node; struct orig_node *orig_node;
int i; int i;
...@@ -160,11 +159,10 @@ void originator_free(struct bat_priv *bat_priv) ...@@ -160,11 +159,10 @@ void originator_free(struct bat_priv *bat_priv)
list_lock = &hash->list_locks[i]; list_lock = &hash->list_locks[i];
spin_lock_bh(list_lock); spin_lock_bh(list_lock);
hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) { hlist_for_each_entry_safe(orig_node, node, node_tmp,
orig_node = bucket->data; head, hash_entry) {
hlist_del_rcu(walk); hlist_del_rcu(node);
call_rcu(&bucket->rcu, bucket_free_rcu);
kref_put(&orig_node->refcount, orig_node_free_ref); kref_put(&orig_node->refcount, orig_node_free_ref);
} }
spin_unlock_bh(list_lock); spin_unlock_bh(list_lock);
...@@ -174,18 +172,6 @@ void originator_free(struct bat_priv *bat_priv) ...@@ -174,18 +172,6 @@ void originator_free(struct bat_priv *bat_priv)
spin_unlock_bh(&bat_priv->orig_hash_lock); spin_unlock_bh(&bat_priv->orig_hash_lock);
} }
static void bucket_free_orig_rcu(struct rcu_head *rcu)
{
struct element_t *bucket;
struct orig_node *orig_node;
bucket = container_of(rcu, struct element_t, rcu);
orig_node = bucket->data;
kref_put(&orig_node->refcount, orig_node_free_ref);
kfree(bucket);
}
/* this function finds or creates an originator entry for the given /* this function finds or creates an originator entry for the given
* address if it does not exits */ * address if it does not exits */
struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr) struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
...@@ -194,16 +180,9 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr) ...@@ -194,16 +180,9 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
int size; int size;
int hash_added; int hash_added;
rcu_read_lock(); orig_node = orig_hash_find(bat_priv, addr);
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, if (orig_node)
compare_orig, choose_orig,
addr));
rcu_read_unlock();
if (orig_node) {
kref_get(&orig_node->refcount);
return orig_node; return orig_node;
}
bat_dbg(DBG_BATMAN, bat_priv, bat_dbg(DBG_BATMAN, bat_priv,
"Creating new originator: %pM\n", addr); "Creating new originator: %pM\n", addr);
...@@ -245,8 +224,8 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr) ...@@ -245,8 +224,8 @@ struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
if (!orig_node->bcast_own_sum) if (!orig_node->bcast_own_sum)
goto free_bcast_own; goto free_bcast_own;
hash_added = hash_add(bat_priv->orig_hash, compare_orig, choose_orig, hash_added = hash_add(bat_priv->orig_hash, compare_orig,
orig_node); choose_orig, orig_node, &orig_node->hash_entry);
if (hash_added < 0) if (hash_added < 0)
goto free_bcast_own_sum; goto free_bcast_own_sum;
...@@ -346,9 +325,8 @@ static bool purge_orig_node(struct bat_priv *bat_priv, ...@@ -346,9 +325,8 @@ static bool purge_orig_node(struct bat_priv *bat_priv,
static void _purge_orig(struct bat_priv *bat_priv) static void _purge_orig(struct bat_priv *bat_priv)
{ {
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk, *safe; struct hlist_node *node, *node_tmp;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
spinlock_t *list_lock; /* spinlock to protect write access */ spinlock_t *list_lock; /* spinlock to protect write access */
struct orig_node *orig_node; struct orig_node *orig_node;
int i; int i;
...@@ -364,14 +342,14 @@ static void _purge_orig(struct bat_priv *bat_priv) ...@@ -364,14 +342,14 @@ static void _purge_orig(struct bat_priv *bat_priv)
list_lock = &hash->list_locks[i]; list_lock = &hash->list_locks[i];
spin_lock_bh(list_lock); spin_lock_bh(list_lock);
hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) { hlist_for_each_entry_safe(orig_node, node, node_tmp,
orig_node = bucket->data; head, hash_entry) {
if (purge_orig_node(bat_priv, orig_node)) { if (purge_orig_node(bat_priv, orig_node)) {
if (orig_node->gw_flags) if (orig_node->gw_flags)
gw_node_delete(bat_priv, orig_node); gw_node_delete(bat_priv, orig_node);
hlist_del_rcu(walk); hlist_del_rcu(node);
call_rcu(&bucket->rcu, bucket_free_orig_rcu); kref_put(&orig_node->refcount,
orig_node_free_ref);
continue; continue;
} }
...@@ -411,9 +389,8 @@ int orig_seq_print_text(struct seq_file *seq, void *offset) ...@@ -411,9 +389,8 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
struct net_device *net_dev = (struct net_device *)seq->private; struct net_device *net_dev = (struct net_device *)seq->private;
struct bat_priv *bat_priv = netdev_priv(net_dev); struct bat_priv *bat_priv = netdev_priv(net_dev);
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk, *node; struct hlist_node *node, *node_tmp;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
struct neigh_node *neigh_node; struct neigh_node *neigh_node;
int batman_count = 0; int batman_count = 0;
...@@ -447,9 +424,7 @@ int orig_seq_print_text(struct seq_file *seq, void *offset) ...@@ -447,9 +424,7 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
if (!orig_node->router) if (!orig_node->router)
continue; continue;
...@@ -468,7 +443,7 @@ int orig_seq_print_text(struct seq_file *seq, void *offset) ...@@ -468,7 +443,7 @@ int orig_seq_print_text(struct seq_file *seq, void *offset)
neigh_node->addr, neigh_node->addr,
neigh_node->if_incoming->net_dev->name); neigh_node->if_incoming->net_dev->name);
hlist_for_each_entry_rcu(neigh_node, node, hlist_for_each_entry_rcu(neigh_node, node_tmp,
&orig_node->neigh_list, list) { &orig_node->neigh_list, list) {
seq_printf(seq, " %pM (%3i)", neigh_node->addr, seq_printf(seq, " %pM (%3i)", neigh_node->addr,
neigh_node->tq_avg); neigh_node->tq_avg);
...@@ -522,9 +497,8 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num) ...@@ -522,9 +497,8 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
{ {
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
int i, ret; int i, ret;
...@@ -536,9 +510,7 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num) ...@@ -536,9 +510,7 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
spin_lock_bh(&orig_node->ogm_cnt_lock); spin_lock_bh(&orig_node->ogm_cnt_lock);
ret = orig_node_add_if(orig_node, max_if_num); ret = orig_node_add_if(orig_node, max_if_num);
spin_unlock_bh(&orig_node->ogm_cnt_lock); spin_unlock_bh(&orig_node->ogm_cnt_lock);
...@@ -614,9 +586,8 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num) ...@@ -614,9 +586,8 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
{ {
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct batman_if *batman_if_tmp; struct batman_if *batman_if_tmp;
struct orig_node *orig_node; struct orig_node *orig_node;
int i, ret; int i, ret;
...@@ -629,9 +600,7 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num) ...@@ -629,9 +600,7 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
spin_lock_bh(&orig_node->ogm_cnt_lock); spin_lock_bh(&orig_node->ogm_cnt_lock);
ret = orig_node_del_if(orig_node, max_if_num, ret = orig_node_del_if(orig_node, max_if_num,
batman_if->if_num); batman_if->if_num);
......
net/batman-adv/originator.h
View file @ 7aadf889
...@@ -22,6 +22,8 @@ ...@@ -22,6 +22,8 @@
#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_ #ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
#define _NET_BATMAN_ADV_ORIGINATOR_H_ #define _NET_BATMAN_ADV_ORIGINATOR_H_
#include "hash.h"
int originator_init(struct bat_priv *bat_priv); int originator_init(struct bat_priv *bat_priv);
void originator_free(struct bat_priv *bat_priv); void originator_free(struct bat_priv *bat_priv);
void purge_orig_ref(struct bat_priv *bat_priv); void purge_orig_ref(struct bat_priv *bat_priv);
...@@ -38,8 +40,10 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num); ...@@ -38,8 +40,10 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num);
/* returns 1 if they are the same originator */ /* returns 1 if they are the same originator */
static inline int compare_orig(void *data1, void *data2) static inline int compare_orig(struct hlist_node *node, void *data2)
{ {
void *data1 = container_of(node, struct orig_node, hash_entry);
return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
} }
...@@ -64,4 +68,33 @@ static inline int choose_orig(void *data, int32_t size) ...@@ -64,4 +68,33 @@ static inline int choose_orig(void *data, int32_t size)
return hash % size; return hash % size;
} }
static inline struct orig_node *orig_hash_find(struct bat_priv *bat_priv,
void *data)
{
struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_head *head;
struct hlist_node *node;
struct orig_node *orig_node, *orig_node_tmp = NULL;
int index;
if (!hash)
return NULL;
index = choose_orig(data, hash->size);
head = &hash->table[index];
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
if (!compare_eth(orig_node, data))
continue;
orig_node_tmp = orig_node;
kref_get(&orig_node_tmp->refcount);
break;
}
rcu_read_unlock();
return orig_node_tmp;
}
#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
net/batman-adv/routing.c
View file @ 7aadf889
...@@ -39,9 +39,8 @@ void slide_own_bcast_window(struct batman_if *batman_if) ...@@ -39,9 +39,8 @@ void slide_own_bcast_window(struct batman_if *batman_if)
{ {
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
unsigned long *word; unsigned long *word;
int i; int i;
...@@ -53,8 +52,7 @@ void slide_own_bcast_window(struct batman_if *batman_if) ...@@ -53,8 +52,7 @@ void slide_own_bcast_window(struct batman_if *batman_if)
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
spin_lock_bh(&orig_node->ogm_cnt_lock); spin_lock_bh(&orig_node->ogm_cnt_lock);
word_index = batman_if->if_num * NUM_WORDS; word_index = batman_if->if_num * NUM_WORDS;
word = &(orig_node->bcast_own[word_index]); word = &(orig_node->bcast_own[word_index]);
...@@ -908,14 +906,11 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv, ...@@ -908,14 +906,11 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv,
/* get routing information */ /* get routing information */
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, orig_node = orig_hash_find(bat_priv, icmp_packet->orig);
compare_orig, choose_orig,
icmp_packet->orig));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
...@@ -987,14 +982,11 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, ...@@ -987,14 +982,11 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
/* get routing information */ /* get routing information */
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *) orig_node = orig_hash_find(bat_priv, icmp_packet->orig);
hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
icmp_packet->orig));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
...@@ -1098,13 +1090,11 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) ...@@ -1098,13 +1090,11 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
/* get routing information */ /* get routing information */
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *) orig_node = orig_hash_find(bat_priv, icmp_packet->dst);
hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
icmp_packet->dst));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
...@@ -1194,11 +1184,12 @@ struct neigh_node *find_router(struct bat_priv *bat_priv, ...@@ -1194,11 +1184,12 @@ struct neigh_node *find_router(struct bat_priv *bat_priv,
if (compare_eth(router_orig->primary_addr, router_orig->orig)) { if (compare_eth(router_orig->primary_addr, router_orig->orig)) {
primary_orig_node = router_orig; primary_orig_node = router_orig;
} else { } else {
primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig, primary_orig_node = orig_hash_find(bat_priv,
choose_orig,
router_orig->primary_addr); router_orig->primary_addr);
if (!primary_orig_node) if (!primary_orig_node)
goto return_router; goto return_router;
kref_put(&primary_orig_node->refcount, orig_node_free_ref);
} }
/* with less than 2 candidates, we can't do any /* with less than 2 candidates, we can't do any
...@@ -1344,13 +1335,11 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, ...@@ -1344,13 +1335,11 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
/* get routing information */ /* get routing information */
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *) orig_node = orig_hash_find(bat_priv, unicast_packet->dest);
hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
unicast_packet->dest));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
rcu_read_unlock(); rcu_read_unlock();
/* find_router() increases neigh_nodes refcount if found. */ /* find_router() increases neigh_nodes refcount if found. */
...@@ -1508,14 +1497,11 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if) ...@@ -1508,14 +1497,11 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *) orig_node = orig_hash_find(bat_priv, bcast_packet->orig);
hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
bcast_packet->orig));
if (!orig_node) if (!orig_node)
goto rcu_unlock; goto rcu_unlock;
kref_get(&orig_node->refcount);
rcu_read_unlock(); rcu_read_unlock();
spin_lock_bh(&orig_node->bcast_seqno_lock); spin_lock_bh(&orig_node->bcast_seqno_lock);
......
net/batman-adv/translation-table.c
View file @ 7aadf889
This diff is collapsed.
net/batman-adv/types.h
View file @ 7aadf889
...@@ -85,6 +85,7 @@ struct orig_node { ...@@ -85,6 +85,7 @@ struct orig_node {
struct list_head frag_list; struct list_head frag_list;
spinlock_t neigh_list_lock; /* protects neighbor list */ spinlock_t neigh_list_lock; /* protects neighbor list */
struct kref refcount; struct kref refcount;
struct hlist_node hash_entry;
struct bat_priv *bat_priv; struct bat_priv *bat_priv;
unsigned long last_frag_packet; unsigned long last_frag_packet;
spinlock_t ogm_cnt_lock; /* protects: bcast_own, bcast_own_sum, spinlock_t ogm_cnt_lock; /* protects: bcast_own, bcast_own_sum,
...@@ -194,11 +195,13 @@ struct hna_local_entry { ...@@ -194,11 +195,13 @@ struct hna_local_entry {
uint8_t addr[ETH_ALEN]; uint8_t addr[ETH_ALEN];
unsigned long last_seen; unsigned long last_seen;
char never_purge; char never_purge;
struct hlist_node hash_entry;
}; };
struct hna_global_entry { struct hna_global_entry {
uint8_t addr[ETH_ALEN]; uint8_t addr[ETH_ALEN];
struct orig_node *orig_node; struct orig_node *orig_node;
struct hlist_node hash_entry;
}; };
/** /**
...@@ -248,6 +251,7 @@ struct vis_info { ...@@ -248,6 +251,7 @@ struct vis_info {
* from. we should not reply to them. */ * from. we should not reply to them. */
struct list_head send_list; struct list_head send_list;
struct kref refcount; struct kref refcount;
struct hlist_node hash_entry;
struct bat_priv *bat_priv; struct bat_priv *bat_priv;
/* this packet might be part of the vis send queue. */ /* this packet might be part of the vis send queue. */
struct sk_buff *skb_packet; struct sk_buff *skb_packet;
......
net/batman-adv/unicast.c
View file @ 7aadf889
...@@ -178,17 +178,11 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, ...@@ -178,17 +178,11 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
(struct unicast_frag_packet *)skb->data; (struct unicast_frag_packet *)skb->data;
*new_skb = NULL; *new_skb = NULL;
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); orig_node = orig_hash_find(bat_priv, unicast_packet->orig);
orig_node = ((struct orig_node *) if (!orig_node)
hash_find(bat_priv->orig_hash, compare_orig, choose_orig, goto unlock;
unicast_packet->orig));
rcu_read_unlock();
if (!orig_node) {
pr_debug("couldn't find originator in orig_hash\n");
goto out;
}
orig_node->last_frag_packet = jiffies; orig_node->last_frag_packet = jiffies;
...@@ -212,9 +206,12 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, ...@@ -212,9 +206,12 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
/* if not, merge failed */ /* if not, merge failed */
if (*new_skb) if (*new_skb)
ret = NET_RX_SUCCESS; ret = NET_RX_SUCCESS;
out:
spin_unlock_bh(&bat_priv->orig_hash_lock);
unlock:
spin_unlock_bh(&bat_priv->orig_hash_lock);
out:
if (orig_node)
kref_put(&orig_node->refcount, orig_node_free_ref);
return ret; return ret;
} }
......
net/batman-adv/vis.c
View file @ 7aadf889
...@@ -67,11 +67,12 @@ static void free_info(struct kref *ref) ...@@ -67,11 +67,12 @@ static void free_info(struct kref *ref)
} }
/* Compare two vis packets, used by the hashing algorithm */ /* Compare two vis packets, used by the hashing algorithm */
static int vis_info_cmp(void *data1, void *data2) static int vis_info_cmp(struct hlist_node *node, void *data2)
{ {
struct vis_info *d1, *d2; struct vis_info *d1, *d2;
struct vis_packet *p1, *p2; struct vis_packet *p1, *p2;
d1 = data1;
d1 = container_of(node, struct vis_info, hash_entry);
d2 = data2; d2 = data2;
p1 = (struct vis_packet *)d1->skb_packet->data; p1 = (struct vis_packet *)d1->skb_packet->data;
p2 = (struct vis_packet *)d2->skb_packet->data; p2 = (struct vis_packet *)d2->skb_packet->data;
...@@ -103,6 +104,34 @@ static int vis_info_choose(void *data, int size) ...@@ -103,6 +104,34 @@ static int vis_info_choose(void *data, int size)
return hash % size; return hash % size;
} }
static struct vis_info *vis_hash_find(struct bat_priv *bat_priv,
void *data)
{
struct hashtable_t *hash = bat_priv->vis_hash;
struct hlist_head *head;
struct hlist_node *node;
struct vis_info *vis_info, *vis_info_tmp = NULL;
int index;
if (!hash)
return NULL;
index = vis_info_choose(data, hash->size);
head = &hash->table[index];
rcu_read_lock();
hlist_for_each_entry_rcu(vis_info, node, head, hash_entry) {
if (!vis_info_cmp(node, data))
continue;
vis_info_tmp = vis_info;
break;
}
rcu_read_unlock();
return vis_info_tmp;
}
/* insert interface to the list of interfaces of one originator, if it /* insert interface to the list of interfaces of one originator, if it
* does not already exist in the list */ * does not already exist in the list */
static void vis_data_insert_interface(const uint8_t *interface, static void vis_data_insert_interface(const uint8_t *interface,
...@@ -174,9 +203,8 @@ static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry, ...@@ -174,9 +203,8 @@ static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
int vis_seq_print_text(struct seq_file *seq, void *offset) int vis_seq_print_text(struct seq_file *seq, void *offset)
{ {
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct vis_info *info; struct vis_info *info;
struct vis_packet *packet; struct vis_packet *packet;
struct vis_info_entry *entries; struct vis_info_entry *entries;
...@@ -202,8 +230,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) ...@@ -202,8 +230,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
for (i = 0; i < hash->size; i++) { for (i = 0; i < hash->size; i++) {
head = &hash->table[i]; head = &hash->table[i];
hlist_for_each_entry(bucket, walk, head, hlist) { rcu_read_lock();
info = bucket->data; hlist_for_each_entry_rcu(info, node, head, hash_entry) {
packet = (struct vis_packet *)info->skb_packet->data; packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *) entries = (struct vis_info_entry *)
((char *)packet + sizeof(struct vis_packet)); ((char *)packet + sizeof(struct vis_packet));
...@@ -235,6 +263,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) ...@@ -235,6 +263,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
kfree(entry); kfree(entry);
} }
} }
rcu_read_unlock();
} }
buff = kmalloc(buf_size, GFP_ATOMIC); buff = kmalloc(buf_size, GFP_ATOMIC);
...@@ -248,8 +277,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) ...@@ -248,8 +277,8 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
for (i = 0; i < hash->size; i++) { for (i = 0; i < hash->size; i++) {
head = &hash->table[i]; head = &hash->table[i];
hlist_for_each_entry(bucket, walk, head, hlist) { rcu_read_lock();
info = bucket->data; hlist_for_each_entry_rcu(info, node, head, hash_entry) {
packet = (struct vis_packet *)info->skb_packet->data; packet = (struct vis_packet *)info->skb_packet->data;
entries = (struct vis_info_entry *) entries = (struct vis_info_entry *)
((char *)packet + sizeof(struct vis_packet)); ((char *)packet + sizeof(struct vis_packet));
...@@ -290,6 +319,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset) ...@@ -290,6 +319,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
kfree(entry); kfree(entry);
} }
} }
rcu_read_unlock();
} }
spin_unlock_bh(&bat_priv->vis_hash_lock); spin_unlock_bh(&bat_priv->vis_hash_lock);
...@@ -380,10 +410,7 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv, ...@@ -380,10 +410,7 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
sizeof(struct vis_packet)); sizeof(struct vis_packet));
memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN); memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
rcu_read_lock(); old_info = vis_hash_find(bat_priv, &search_elem);
old_info = hash_find(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
&search_elem);
rcu_read_unlock();
kfree_skb(search_elem.skb_packet); kfree_skb(search_elem.skb_packet);
if (old_info) { if (old_info) {
...@@ -443,7 +470,7 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv, ...@@ -443,7 +470,7 @@ static struct vis_info *add_packet(struct bat_priv *bat_priv,
/* try to add it */ /* try to add it */
hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose, hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
info); info, &info->hash_entry);
if (hash_added < 0) { if (hash_added < 0) {
/* did not work (for some reason) */ /* did not work (for some reason) */
kref_put(&old_info->refcount, free_info); kref_put(&old_info->refcount, free_info);
...@@ -530,9 +557,8 @@ static int find_best_vis_server(struct bat_priv *bat_priv, ...@@ -530,9 +557,8 @@ static int find_best_vis_server(struct bat_priv *bat_priv,
struct vis_info *info) struct vis_info *info)
{ {
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
struct vis_packet *packet; struct vis_packet *packet;
int best_tq = -1, i; int best_tq = -1, i;
...@@ -543,8 +569,7 @@ static int find_best_vis_server(struct bat_priv *bat_priv, ...@@ -543,8 +569,7 @@ static int find_best_vis_server(struct bat_priv *bat_priv,
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
if ((orig_node) && (orig_node->router) && if ((orig_node) && (orig_node->router) &&
(orig_node->flags & VIS_SERVER) && (orig_node->flags & VIS_SERVER) &&
(orig_node->router->tq_avg > best_tq)) { (orig_node->router->tq_avg > best_tq)) {
...@@ -576,9 +601,8 @@ static bool vis_packet_full(struct vis_info *info) ...@@ -576,9 +601,8 @@ static bool vis_packet_full(struct vis_info *info)
static int generate_vis_packet(struct bat_priv *bat_priv) static int generate_vis_packet(struct bat_priv *bat_priv)
{ {
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
struct neigh_node *neigh_node; struct neigh_node *neigh_node;
struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info; struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info;
...@@ -610,8 +634,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv) ...@@ -610,8 +634,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
...@@ -653,8 +676,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv) ...@@ -653,8 +676,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
for (i = 0; i < hash->size; i++) { for (i = 0; i < hash->size; i++) {
head = &hash->table[i]; head = &hash->table[i];
hlist_for_each_entry(bucket, walk, head, hlist) { hlist_for_each_entry(hna_local_entry, node, head, hash_entry) {
hna_local_entry = bucket->data;
entry = (struct vis_info_entry *) entry = (struct vis_info_entry *)
skb_put(info->skb_packet, skb_put(info->skb_packet,
sizeof(*entry)); sizeof(*entry));
...@@ -680,25 +702,22 @@ static void purge_vis_packets(struct bat_priv *bat_priv) ...@@ -680,25 +702,22 @@ static void purge_vis_packets(struct bat_priv *bat_priv)
{ {
int i; int i;
struct hashtable_t *hash = bat_priv->vis_hash; struct hashtable_t *hash = bat_priv->vis_hash;
struct hlist_node *walk, *safe; struct hlist_node *node, *node_tmp;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct vis_info *info; struct vis_info *info;
for (i = 0; i < hash->size; i++) { for (i = 0; i < hash->size; i++) {
head = &hash->table[i]; head = &hash->table[i];
hlist_for_each_entry_safe(bucket, walk, safe, head, hlist) { hlist_for_each_entry_safe(info, node, node_tmp,
info = bucket->data; head, hash_entry) {
/* never purge own data. */ /* never purge own data. */
if (info == bat_priv->my_vis_info) if (info == bat_priv->my_vis_info)
continue; continue;
if (time_after(jiffies, if (time_after(jiffies,
info->first_seen + VIS_TIMEOUT * HZ)) { info->first_seen + VIS_TIMEOUT * HZ)) {
hlist_del(walk); hlist_del(node);
kfree(bucket);
send_list_del(info); send_list_del(info);
kref_put(&info->refcount, free_info); kref_put(&info->refcount, free_info);
} }
...@@ -710,9 +729,8 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv, ...@@ -710,9 +729,8 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv,
struct vis_info *info) struct vis_info *info)
{ {
struct hashtable_t *hash = bat_priv->orig_hash; struct hashtable_t *hash = bat_priv->orig_hash;
struct hlist_node *walk; struct hlist_node *node;
struct hlist_head *head; struct hlist_head *head;
struct element_t *bucket;
struct orig_node *orig_node; struct orig_node *orig_node;
struct vis_packet *packet; struct vis_packet *packet;
struct sk_buff *skb; struct sk_buff *skb;
...@@ -729,9 +747,7 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv, ...@@ -729,9 +747,7 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv,
head = &hash->table[i]; head = &hash->table[i];
rcu_read_lock(); rcu_read_lock();
hlist_for_each_entry_rcu(bucket, walk, head, hlist) { hlist_for_each_entry_rcu(orig_node, node, head, hash_entry) {
orig_node = bucket->data;
/* if it's a vis server and reachable, send it. */ /* if it's a vis server and reachable, send it. */
if ((!orig_node) || (!orig_node->router)) if ((!orig_node) || (!orig_node->router))
continue; continue;
...@@ -774,14 +790,11 @@ static void unicast_vis_packet(struct bat_priv *bat_priv, ...@@ -774,14 +790,11 @@ static void unicast_vis_packet(struct bat_priv *bat_priv,
spin_lock_bh(&bat_priv->orig_hash_lock); spin_lock_bh(&bat_priv->orig_hash_lock);
rcu_read_lock(); rcu_read_lock();
orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash, orig_node = orig_hash_find(bat_priv, packet->target_orig);
compare_orig, choose_orig,
packet->target_orig));
if (!orig_node) if (!orig_node)
goto unlock; goto unlock;
kref_get(&orig_node->refcount);
neigh_node = orig_node->router; neigh_node = orig_node->router;
if (!neigh_node) if (!neigh_node)
...@@ -925,7 +938,8 @@ int vis_init(struct bat_priv *bat_priv) ...@@ -925,7 +938,8 @@ int vis_init(struct bat_priv *bat_priv)
INIT_LIST_HEAD(&bat_priv->vis_send_list); INIT_LIST_HEAD(&bat_priv->vis_send_list);
hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose, hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
bat_priv->my_vis_info); bat_priv->my_vis_info,
&bat_priv->my_vis_info->hash_entry);
if (hash_added < 0) { if (hash_added < 0) {
pr_err("Can't add own vis packet into hash\n"); pr_err("Can't add own vis packet into hash\n");
/* not in hash, need to remove it manually. */ /* not in hash, need to remove it manually. */
...@@ -947,10 +961,11 @@ int vis_init(struct bat_priv *bat_priv) ...@@ -947,10 +961,11 @@ int vis_init(struct bat_priv *bat_priv)
} }
/* Decrease the reference count on a hash item info */ /* Decrease the reference count on a hash item info */
static void free_info_ref(void *data, void *arg) static void free_info_ref(struct hlist_node *node, void *arg)
{ {
struct vis_info *info = data; struct vis_info *info;
info = container_of(node, struct vis_info, hash_entry);
send_list_del(info); send_list_del(info);
kref_put(&info->refcount, free_info); kref_put(&info->refcount, free_info);
} }
......
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