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path: root/net/batman-adv/bat_iv_ogm.c
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Diffstat (limited to 'net/batman-adv/bat_iv_ogm.c')
-rw-r--r--net/batman-adv/bat_iv_ogm.c108
1 files changed, 81 insertions, 27 deletions
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index a2a04982a22b..0b1343dde5d2 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -87,6 +87,57 @@ static uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
return (uint8_t)(sum / count);
}
+/**
+ * batadv_iv_ogm_orig_get - retrieve or create (if does not exist) an originator
+ * @bat_priv: the bat priv with all the soft interface information
+ * @addr: mac address of the originator
+ *
+ * Returns the originator object corresponding to the passed mac address or NULL
+ * on failure.
+ * If the object does not exists it is created an initialised.
+ */
+static struct batadv_orig_node *
+batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr)
+{
+ struct batadv_orig_node *orig_node;
+ int size, hash_added;
+
+ orig_node = batadv_orig_hash_find(bat_priv, addr);
+ if (orig_node)
+ return orig_node;
+
+ orig_node = batadv_orig_node_new(bat_priv, addr);
+ if (!orig_node)
+ return NULL;
+
+ spin_lock_init(&orig_node->bat_iv.ogm_cnt_lock);
+
+ size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS;
+ orig_node->bat_iv.bcast_own = kzalloc(size, GFP_ATOMIC);
+ if (!orig_node->bat_iv.bcast_own)
+ goto free_orig_node;
+
+ size = bat_priv->num_ifaces * sizeof(uint8_t);
+ orig_node->bat_iv.bcast_own_sum = kzalloc(size, GFP_ATOMIC);
+ if (!orig_node->bat_iv.bcast_own_sum)
+ goto free_bcast_own;
+
+ hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
+ batadv_choose_orig, orig_node,
+ &orig_node->hash_entry);
+ if (hash_added != 0)
+ goto free_bcast_own;
+
+ return orig_node;
+
+free_bcast_own:
+ kfree(orig_node->bat_iv.bcast_own);
+free_orig_node:
+ batadv_orig_node_free_ref(orig_node);
+
+ return NULL;
+}
+
static struct batadv_neigh_node *
batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
const uint8_t *neigh_addr,
@@ -663,20 +714,22 @@ batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
uint32_t i;
size_t word_index;
uint8_t *w;
+ int if_num;
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
rcu_read_lock();
hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
- spin_lock_bh(&orig_node->ogm_cnt_lock);
+ spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
word_index = hard_iface->if_num * BATADV_NUM_WORDS;
- word = &(orig_node->bcast_own[word_index]);
+ word = &(orig_node->bat_iv.bcast_own[word_index]);
batadv_bit_get_packet(bat_priv, word, 1, 0);
- w = &orig_node->bcast_own_sum[hard_iface->if_num];
+ if_num = hard_iface->if_num;
+ w = &orig_node->bat_iv.bcast_own_sum[if_num];
*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
- spin_unlock_bh(&orig_node->ogm_cnt_lock);
+ spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
}
rcu_read_unlock();
}
@@ -768,7 +821,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
if (!neigh_node) {
struct batadv_orig_node *orig_tmp;
- orig_tmp = batadv_get_orig_node(bat_priv, ethhdr->h_source);
+ orig_tmp = batadv_iv_ogm_orig_get(bat_priv, ethhdr->h_source);
if (!orig_tmp)
goto unlock;
@@ -818,16 +871,16 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
*/
if (router && (neigh_node->bat_iv.tq_avg == router->bat_iv.tq_avg)) {
orig_node_tmp = router->orig_node;
- spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
+ spin_lock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
if_num = router->if_incoming->if_num;
- sum_orig = orig_node_tmp->bcast_own_sum[if_num];
- spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
+ sum_orig = orig_node_tmp->bat_iv.bcast_own_sum[if_num];
+ spin_unlock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
orig_node_tmp = neigh_node->orig_node;
- spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
+ spin_lock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
if_num = neigh_node->if_incoming->if_num;
- sum_neigh = orig_node_tmp->bcast_own_sum[if_num];
- spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
+ sum_neigh = orig_node_tmp->bat_iv.bcast_own_sum[if_num];
+ spin_unlock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
if (sum_orig >= sum_neigh)
goto out;
@@ -855,7 +908,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
uint8_t total_count;
uint8_t orig_eq_count, neigh_rq_count, neigh_rq_inv, tq_own;
unsigned int neigh_rq_inv_cube, neigh_rq_max_cube;
- int tq_asym_penalty, inv_asym_penalty, ret = 0;
+ int tq_asym_penalty, inv_asym_penalty, if_num, ret = 0;
unsigned int combined_tq;
/* find corresponding one hop neighbor */
@@ -893,10 +946,11 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
orig_node->last_seen = jiffies;
/* find packet count of corresponding one hop neighbor */
- spin_lock_bh(&orig_node->ogm_cnt_lock);
- orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
+ spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
+ if_num = if_incoming->if_num;
+ orig_eq_count = orig_neigh_node->bat_iv.bcast_own_sum[if_num];
neigh_rq_count = neigh_node->bat_iv.real_packet_count;
- spin_unlock_bh(&orig_node->ogm_cnt_lock);
+ spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
/* pay attention to not get a value bigger than 100 % */
if (orig_eq_count > neigh_rq_count)
@@ -980,11 +1034,11 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
uint8_t packet_count;
unsigned long *bitmap;
- orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
+ orig_node = batadv_iv_ogm_orig_get(bat_priv, batadv_ogm_packet->orig);
if (!orig_node)
return BATADV_NO_DUP;
- spin_lock_bh(&orig_node->ogm_cnt_lock);
+ spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
seq_diff = seqno - orig_node->last_real_seqno;
/* signalize caller that the packet is to be dropped. */
@@ -1033,7 +1087,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
}
out:
- spin_unlock_bh(&orig_node->ogm_cnt_lock);
+ spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
batadv_orig_node_free_ref(orig_node);
return ret;
}
@@ -1129,8 +1183,8 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
int16_t if_num;
uint8_t *weight;
- orig_neigh_node = batadv_get_orig_node(bat_priv,
- ethhdr->h_source);
+ orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv,
+ ethhdr->h_source);
if (!orig_neigh_node)
return;
@@ -1144,15 +1198,15 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
if_num = if_incoming->if_num;
offset = if_num * BATADV_NUM_WORDS;
- spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
- word = &(orig_neigh_node->bcast_own[offset]);
+ spin_lock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);
+ word = &(orig_neigh_node->bat_iv.bcast_own[offset]);
bit_pos = if_incoming_seqno - 2;
bit_pos -= ntohl(batadv_ogm_packet->seqno);
batadv_set_bit(word, bit_pos);
- weight = &orig_neigh_node->bcast_own_sum[if_num];
+ weight = &orig_neigh_node->bat_iv.bcast_own_sum[if_num];
*weight = bitmap_weight(word,
BATADV_TQ_LOCAL_WINDOW_SIZE);
- spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
+ spin_unlock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);
}
batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
@@ -1175,7 +1229,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
return;
}
- orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
+ orig_node = batadv_iv_ogm_orig_get(bat_priv, batadv_ogm_packet->orig);
if (!orig_node)
return;
@@ -1225,8 +1279,8 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
if (is_single_hop_neigh)
orig_neigh_node = orig_node;
else
- orig_neigh_node = batadv_get_orig_node(bat_priv,
- ethhdr->h_source);
+ orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv,
+ ethhdr->h_source);
if (!orig_neigh_node)
goto out;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 05:10:54 +0000