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batman-adv: make struct batadv_orig_node algorithm agnostic
some of the struct batadv_orig_node members are B.A.T.M.A.N. IV specific and therefore they are moved in a algorithm specific substruct in order to make batadv_orig_node routing algorithm agnostic Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Antonio Quartulli
Antonio Quartulli
parent
0538f75991
commit
bbad0a5e36
@ -87,6 +87,57 @@ static uint8_t batadv_ring_buffer_avg(const uint8_t lq_recv[])
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return (uint8_t)(sum / count);
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}
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/**
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* batadv_iv_ogm_orig_get - retrieve or create (if does not exist) an originator
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* @bat_priv: the bat priv with all the soft interface information
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* @addr: mac address of the originator
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*
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* Returns the originator object corresponding to the passed mac address or NULL
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* on failure.
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* If the object does not exists it is created an initialised.
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*/
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static struct batadv_orig_node *
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batadv_iv_ogm_orig_get(struct batadv_priv *bat_priv, const uint8_t *addr)
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{
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struct batadv_orig_node *orig_node;
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int size, hash_added;
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orig_node = batadv_orig_hash_find(bat_priv, addr);
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if (orig_node)
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return orig_node;
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orig_node = batadv_orig_node_new(bat_priv, addr);
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if (!orig_node)
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return NULL;
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spin_lock_init(&orig_node->bat_iv.ogm_cnt_lock);
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size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS;
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orig_node->bat_iv.bcast_own = kzalloc(size, GFP_ATOMIC);
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if (!orig_node->bat_iv.bcast_own)
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goto free_orig_node;
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size = bat_priv->num_ifaces * sizeof(uint8_t);
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orig_node->bat_iv.bcast_own_sum = kzalloc(size, GFP_ATOMIC);
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if (!orig_node->bat_iv.bcast_own_sum)
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goto free_bcast_own;
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hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
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batadv_choose_orig, orig_node,
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&orig_node->hash_entry);
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if (hash_added != 0)
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goto free_bcast_own;
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return orig_node;
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free_bcast_own:
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kfree(orig_node->bat_iv.bcast_own);
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free_orig_node:
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batadv_orig_node_free_ref(orig_node);
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return NULL;
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}
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static struct batadv_neigh_node *
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batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
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const uint8_t *neigh_addr,
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@ -663,20 +714,22 @@ batadv_iv_ogm_slide_own_bcast_window(struct batadv_hard_iface *hard_iface)
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uint32_t i;
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size_t word_index;
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uint8_t *w;
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int if_num;
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for (i = 0; i < hash->size; i++) {
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head = &hash->table[i];
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rcu_read_lock();
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hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
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spin_lock_bh(&orig_node->ogm_cnt_lock);
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spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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word_index = hard_iface->if_num * BATADV_NUM_WORDS;
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word = &(orig_node->bcast_own[word_index]);
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word = &(orig_node->bat_iv.bcast_own[word_index]);
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batadv_bit_get_packet(bat_priv, word, 1, 0);
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w = &orig_node->bcast_own_sum[hard_iface->if_num];
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if_num = hard_iface->if_num;
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w = &orig_node->bat_iv.bcast_own_sum[if_num];
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*w = bitmap_weight(word, BATADV_TQ_LOCAL_WINDOW_SIZE);
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spin_unlock_bh(&orig_node->ogm_cnt_lock);
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spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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}
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rcu_read_unlock();
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}
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@ -768,7 +821,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
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if (!neigh_node) {
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struct batadv_orig_node *orig_tmp;
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orig_tmp = batadv_get_orig_node(bat_priv, ethhdr->h_source);
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orig_tmp = batadv_iv_ogm_orig_get(bat_priv, ethhdr->h_source);
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if (!orig_tmp)
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goto unlock;
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@ -818,16 +871,16 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,
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*/
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if (router && (neigh_node->bat_iv.tq_avg == router->bat_iv.tq_avg)) {
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orig_node_tmp = router->orig_node;
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spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
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spin_lock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
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if_num = router->if_incoming->if_num;
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sum_orig = orig_node_tmp->bcast_own_sum[if_num];
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spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
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sum_orig = orig_node_tmp->bat_iv.bcast_own_sum[if_num];
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spin_unlock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
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orig_node_tmp = neigh_node->orig_node;
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spin_lock_bh(&orig_node_tmp->ogm_cnt_lock);
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spin_lock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
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if_num = neigh_node->if_incoming->if_num;
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sum_neigh = orig_node_tmp->bcast_own_sum[if_num];
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spin_unlock_bh(&orig_node_tmp->ogm_cnt_lock);
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sum_neigh = orig_node_tmp->bat_iv.bcast_own_sum[if_num];
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spin_unlock_bh(&orig_node_tmp->bat_iv.ogm_cnt_lock);
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if (sum_orig >= sum_neigh)
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goto out;
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@ -855,7 +908,7 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
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uint8_t total_count;
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uint8_t orig_eq_count, neigh_rq_count, neigh_rq_inv, tq_own;
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unsigned int neigh_rq_inv_cube, neigh_rq_max_cube;
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int tq_asym_penalty, inv_asym_penalty, ret = 0;
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int tq_asym_penalty, inv_asym_penalty, if_num, ret = 0;
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unsigned int combined_tq;
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/* find corresponding one hop neighbor */
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@ -893,10 +946,11 @@ static int batadv_iv_ogm_calc_tq(struct batadv_orig_node *orig_node,
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orig_node->last_seen = jiffies;
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/* find packet count of corresponding one hop neighbor */
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spin_lock_bh(&orig_node->ogm_cnt_lock);
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orig_eq_count = orig_neigh_node->bcast_own_sum[if_incoming->if_num];
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spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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if_num = if_incoming->if_num;
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orig_eq_count = orig_neigh_node->bat_iv.bcast_own_sum[if_num];
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neigh_rq_count = neigh_node->bat_iv.real_packet_count;
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spin_unlock_bh(&orig_node->ogm_cnt_lock);
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spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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/* pay attention to not get a value bigger than 100 % */
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if (orig_eq_count > neigh_rq_count)
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@ -980,11 +1034,11 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
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uint8_t packet_count;
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unsigned long *bitmap;
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orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
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orig_node = batadv_iv_ogm_orig_get(bat_priv, batadv_ogm_packet->orig);
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if (!orig_node)
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return BATADV_NO_DUP;
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spin_lock_bh(&orig_node->ogm_cnt_lock);
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spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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seq_diff = seqno - orig_node->last_real_seqno;
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/* signalize caller that the packet is to be dropped. */
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@ -1033,7 +1087,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
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}
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out:
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spin_unlock_bh(&orig_node->ogm_cnt_lock);
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spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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batadv_orig_node_free_ref(orig_node);
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return ret;
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}
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@ -1129,7 +1183,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
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int16_t if_num;
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uint8_t *weight;
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orig_neigh_node = batadv_get_orig_node(bat_priv,
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orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv,
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ethhdr->h_source);
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if (!orig_neigh_node)
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return;
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@ -1144,15 +1198,15 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
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if_num = if_incoming->if_num;
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offset = if_num * BATADV_NUM_WORDS;
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spin_lock_bh(&orig_neigh_node->ogm_cnt_lock);
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word = &(orig_neigh_node->bcast_own[offset]);
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spin_lock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);
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word = &(orig_neigh_node->bat_iv.bcast_own[offset]);
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bit_pos = if_incoming_seqno - 2;
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bit_pos -= ntohl(batadv_ogm_packet->seqno);
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batadv_set_bit(word, bit_pos);
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weight = &orig_neigh_node->bcast_own_sum[if_num];
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weight = &orig_neigh_node->bat_iv.bcast_own_sum[if_num];
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*weight = bitmap_weight(word,
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BATADV_TQ_LOCAL_WINDOW_SIZE);
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spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
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spin_unlock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock);
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}
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batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
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@ -1175,7 +1229,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
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return;
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}
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orig_node = batadv_get_orig_node(bat_priv, batadv_ogm_packet->orig);
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orig_node = batadv_iv_ogm_orig_get(bat_priv, batadv_ogm_packet->orig);
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if (!orig_node)
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return;
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@ -1225,7 +1279,7 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,
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if (is_single_hop_neigh)
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orig_neigh_node = orig_node;
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else
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orig_neigh_node = batadv_get_orig_node(bat_priv,
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orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv,
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ethhdr->h_source);
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if (!orig_neigh_node)
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@ -36,7 +36,7 @@ static struct lock_class_key batadv_orig_hash_lock_class_key;
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static void batadv_purge_orig(struct work_struct *work);
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/* returns 1 if they are the same originator */
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static int batadv_compare_orig(const struct hlist_node *node, const void *data2)
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int batadv_compare_orig(const struct hlist_node *node, const void *data2)
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{
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const void *data1 = container_of(node, struct batadv_orig_node,
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hash_entry);
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@ -242,8 +242,8 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu)
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"originator timed out");
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kfree(orig_node->tt_buff);
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kfree(orig_node->bcast_own);
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kfree(orig_node->bcast_own_sum);
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kfree(orig_node->bat_iv.bcast_own);
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kfree(orig_node->bat_iv.bcast_own_sum);
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kfree(orig_node);
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}
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@ -301,21 +301,22 @@ void batadv_originator_free(struct batadv_priv *bat_priv)
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batadv_hash_destroy(hash);
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}
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/* this function finds or creates an originator entry for the given
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* address if it does not exits
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/**
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* batadv_orig_node_new - creates a new orig_node
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* @bat_priv: the bat priv with all the soft interface information
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* @addr: the mac address of the originator
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*
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* Creates a new originator object and initialise all the generic fields.
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* The new object is not added to the originator list.
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* Returns the newly created object or NULL on failure.
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*/
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struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
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struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
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const uint8_t *addr)
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{
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struct batadv_orig_node *orig_node;
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struct batadv_orig_node_vlan *vlan;
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int size, i;
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int hash_added;
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unsigned long reset_time;
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orig_node = batadv_orig_hash_find(bat_priv, addr);
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if (orig_node)
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return orig_node;
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int i;
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batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
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"Creating new originator: %pM\n", addr);
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@ -327,7 +328,6 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
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INIT_HLIST_HEAD(&orig_node->neigh_list);
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INIT_LIST_HEAD(&orig_node->bond_list);
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INIT_LIST_HEAD(&orig_node->vlan_list);
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spin_lock_init(&orig_node->ogm_cnt_lock);
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spin_lock_init(&orig_node->bcast_seqno_lock);
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spin_lock_init(&orig_node->neigh_list_lock);
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spin_lock_init(&orig_node->tt_buff_lock);
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@ -363,37 +363,13 @@ struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
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*/
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batadv_orig_node_vlan_free_ref(vlan);
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size = bat_priv->num_ifaces * sizeof(unsigned long) * BATADV_NUM_WORDS;
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orig_node->bcast_own = kzalloc(size, GFP_ATOMIC);
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if (!orig_node->bcast_own)
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goto free_vlan;
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size = bat_priv->num_ifaces * sizeof(uint8_t);
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orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC);
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for (i = 0; i < BATADV_FRAG_BUFFER_COUNT; i++) {
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INIT_HLIST_HEAD(&orig_node->fragments[i].head);
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spin_lock_init(&orig_node->fragments[i].lock);
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orig_node->fragments[i].size = 0;
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}
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if (!orig_node->bcast_own_sum)
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goto free_bcast_own;
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hash_added = batadv_hash_add(bat_priv->orig_hash, batadv_compare_orig,
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batadv_choose_orig, orig_node,
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&orig_node->hash_entry);
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if (hash_added != 0)
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goto free_bcast_own_sum;
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return orig_node;
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free_bcast_own_sum:
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kfree(orig_node->bcast_own_sum);
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free_bcast_own:
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kfree(orig_node->bcast_own);
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free_vlan:
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batadv_orig_node_vlan_free_ref(vlan);
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free_orig_node:
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kfree(orig_node);
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return NULL;
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@ -619,18 +595,18 @@ static int batadv_orig_node_add_if(struct batadv_orig_node *orig_node,
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if (!data_ptr)
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return -ENOMEM;
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memcpy(data_ptr, orig_node->bcast_own, old_size);
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kfree(orig_node->bcast_own);
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orig_node->bcast_own = data_ptr;
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memcpy(data_ptr, orig_node->bat_iv.bcast_own, old_size);
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kfree(orig_node->bat_iv.bcast_own);
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orig_node->bat_iv.bcast_own = data_ptr;
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data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
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if (!data_ptr)
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return -ENOMEM;
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memcpy(data_ptr, orig_node->bcast_own_sum,
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memcpy(data_ptr, orig_node->bat_iv.bcast_own_sum,
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(max_if_num - 1) * sizeof(uint8_t));
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kfree(orig_node->bcast_own_sum);
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orig_node->bcast_own_sum = data_ptr;
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kfree(orig_node->bat_iv.bcast_own_sum);
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orig_node->bat_iv.bcast_own_sum = data_ptr;
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return 0;
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}
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@ -653,9 +629,9 @@ int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface,
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rcu_read_lock();
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hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
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spin_lock_bh(&orig_node->ogm_cnt_lock);
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spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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ret = batadv_orig_node_add_if(orig_node, max_if_num);
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spin_unlock_bh(&orig_node->ogm_cnt_lock);
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spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
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if (ret == -ENOMEM)
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goto err;
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@ -673,8 +649,8 @@ err:
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static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node,
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int max_if_num, int del_if_num)
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{
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int chunk_size, if_offset;
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void *data_ptr = NULL;
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int chunk_size;
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/* last interface was removed */
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if (max_if_num == 0)
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@ -686,16 +662,16 @@ static int batadv_orig_node_del_if(struct batadv_orig_node *orig_node,
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return -ENOMEM;
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/* copy first part */
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memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
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memcpy(data_ptr, orig_node->bat_iv.bcast_own, del_if_num * chunk_size);
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/* copy second part */
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memcpy((char *)data_ptr + del_if_num * chunk_size,
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orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
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orig_node->bat_iv.bcast_own + ((del_if_num + 1) * chunk_size),
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(max_if_num - del_if_num) * chunk_size);
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free_bcast_own:
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kfree(orig_node->bcast_own);
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orig_node->bcast_own = data_ptr;
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kfree(orig_node->bat_iv.bcast_own);
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||||
orig_node->bat_iv.bcast_own = data_ptr;
|
||||
|
||||
if (max_if_num == 0)
|
||||
goto free_own_sum;
|
||||
@ -704,16 +680,17 @@ free_bcast_own:
|
||||
if (!data_ptr)
|
||||
return -ENOMEM;
|
||||
|
||||
memcpy(data_ptr, orig_node->bcast_own_sum,
|
||||
memcpy(data_ptr, orig_node->bat_iv.bcast_own_sum,
|
||||
del_if_num * sizeof(uint8_t));
|
||||
|
||||
if_offset = (del_if_num + 1) * sizeof(uint8_t);
|
||||
memcpy((char *)data_ptr + del_if_num * sizeof(uint8_t),
|
||||
orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
|
||||
orig_node->bat_iv.bcast_own_sum + if_offset,
|
||||
(max_if_num - del_if_num) * sizeof(uint8_t));
|
||||
|
||||
free_own_sum:
|
||||
kfree(orig_node->bcast_own_sum);
|
||||
orig_node->bcast_own_sum = data_ptr;
|
||||
kfree(orig_node->bat_iv.bcast_own_sum);
|
||||
orig_node->bat_iv.bcast_own_sum = data_ptr;
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -737,10 +714,10 @@ int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface,
|
||||
|
||||
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);
|
||||
ret = batadv_orig_node_del_if(orig_node, max_if_num,
|
||||
hard_iface->if_num);
|
||||
spin_unlock_bh(&orig_node->ogm_cnt_lock);
|
||||
spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock);
|
||||
|
||||
if (ret == -ENOMEM)
|
||||
goto err;
|
||||
|
||||
@ -22,12 +22,13 @@
|
||||
|
||||
#include "hash.h"
|
||||
|
||||
int batadv_compare_orig(const struct hlist_node *node, const void *data2);
|
||||
int batadv_originator_init(struct batadv_priv *bat_priv);
|
||||
void batadv_originator_free(struct batadv_priv *bat_priv);
|
||||
void batadv_purge_orig_ref(struct batadv_priv *bat_priv);
|
||||
void batadv_orig_node_free_ref(struct batadv_orig_node *orig_node);
|
||||
void batadv_orig_node_free_ref_now(struct batadv_orig_node *orig_node);
|
||||
struct batadv_orig_node *batadv_get_orig_node(struct batadv_priv *bat_priv,
|
||||
struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,
|
||||
const uint8_t *addr);
|
||||
struct batadv_neigh_node *
|
||||
batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
|
||||
|
||||
@ -132,15 +132,29 @@ struct batadv_orig_node_vlan {
|
||||
struct rcu_head rcu;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members
|
||||
* @bcast_own: bitfield containing the number of our OGMs this orig_node
|
||||
* rebroadcasted "back" to us (relative to last_real_seqno)
|
||||
* @bcast_own_sum: counted result of bcast_own
|
||||
* @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
|
||||
* neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
|
||||
*/
|
||||
struct batadv_orig_bat_iv {
|
||||
unsigned long *bcast_own;
|
||||
uint8_t *bcast_own_sum;
|
||||
/* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
|
||||
* neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count
|
||||
*/
|
||||
spinlock_t ogm_cnt_lock;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct batadv_orig_node - structure for orig_list maintaining nodes of mesh
|
||||
* @orig: originator ethernet address
|
||||
* @primary_addr: hosts primary interface address
|
||||
* @router: router that should be used to reach this originator
|
||||
* @batadv_dat_addr_t: address of the orig node in the distributed hash
|
||||
* @bcast_own: bitfield containing the number of our OGMs this orig_node
|
||||
* rebroadcasted "back" to us (relative to last_real_seqno)
|
||||
* @bcast_own_sum: counted result of bcast_own
|
||||
* @last_seen: time when last packet from this node was received
|
||||
* @bcast_seqno_reset: time when the broadcast seqno window was reset
|
||||
* @batman_seqno_reset: time when the batman seqno window was reset
|
||||
@ -166,8 +180,6 @@ struct batadv_orig_node_vlan {
|
||||
* @neigh_list_lock: lock protecting neigh_list, router and bonding_list
|
||||
* @hash_entry: hlist node for batadv_priv::orig_hash
|
||||
* @bat_priv: pointer to soft_iface this orig node belongs to
|
||||
* @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum,
|
||||
* neigh_node->real_bits & neigh_node->real_packet_count
|
||||
* @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno
|
||||
* @bond_candidates: how many candidates are available
|
||||
* @bond_list: list of bonding candidates
|
||||
@ -181,6 +193,7 @@ struct batadv_orig_node_vlan {
|
||||
* @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the
|
||||
* originator represented by this object
|
||||
* @vlan_list_lock: lock protecting vlan_list
|
||||
* @bat_iv: B.A.T.M.A.N. IV private structure
|
||||
*/
|
||||
struct batadv_orig_node {
|
||||
uint8_t orig[ETH_ALEN];
|
||||
@ -189,8 +202,6 @@ struct batadv_orig_node {
|
||||
#ifdef CONFIG_BATMAN_ADV_DAT
|
||||
batadv_dat_addr_t dat_addr;
|
||||
#endif
|
||||
unsigned long *bcast_own;
|
||||
uint8_t *bcast_own_sum;
|
||||
unsigned long last_seen;
|
||||
unsigned long bcast_seqno_reset;
|
||||
unsigned long batman_seqno_reset;
|
||||
@ -211,10 +222,6 @@ struct batadv_orig_node {
|
||||
spinlock_t neigh_list_lock;
|
||||
struct hlist_node hash_entry;
|
||||
struct batadv_priv *bat_priv;
|
||||
/* ogm_cnt_lock protects: bcast_own, bcast_own_sum,
|
||||
* neigh_node->real_bits & neigh_node->real_packet_count
|
||||
*/
|
||||
spinlock_t ogm_cnt_lock;
|
||||
/* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */
|
||||
spinlock_t bcast_seqno_lock;
|
||||
atomic_t bond_candidates;
|
||||
@ -230,6 +237,7 @@ struct batadv_orig_node {
|
||||
struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT];
|
||||
struct list_head vlan_list;
|
||||
spinlock_t vlan_list_lock; /* protects vlan_list */
|
||||
struct batadv_orig_bat_iv bat_iv;
|
||||
};
|
||||
|
||||
/**
|
||||
|
||||
Loading…
Reference in New Issue
Block a user