batman-adv: separate ethernet comparing calls from hash functions
Note: The function compare_ether_addr() provided by the Linux kernel requires aligned memory. Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Marek Lindner
Родитель
9e0b33c221
Коммит
39901e7162
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@ -187,7 +187,7 @@ static void check_known_mac_addr(struct net_device *net_dev)
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if (batman_if->net_dev == net_dev)
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continue;
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if (!compare_orig(batman_if->net_dev->dev_addr,
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if (!compare_eth(batman_if->net_dev->dev_addr,
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net_dev->dev_addr))
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continue;
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@ -161,7 +161,7 @@ int is_my_mac(uint8_t *addr)
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if (batman_if->if_status != IF_ACTIVE)
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continue;
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if (compare_orig(batman_if->net_dev->dev_addr, addr)) {
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if (compare_eth(batman_if->net_dev->dev_addr, addr)) {
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rcu_read_unlock();
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return 1;
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}
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@ -165,4 +165,14 @@ static inline void bat_dbg(char type __always_unused,
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pr_err("%s: " fmt, _netdev->name, ## arg); \
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} while (0)
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/**
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* returns 1 if they are the same ethernet addr
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*
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* note: can't use compare_ether_addr() as it requires aligned memory
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*/
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static inline int compare_eth(void *data1, void *data2)
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{
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return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
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}
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#endif /* _NET_BATMAN_ADV_MAIN_H_ */
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@ -163,8 +163,8 @@ static int is_bidirectional_neigh(struct orig_node *orig_node,
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hlist_for_each_entry_rcu(tmp_neigh_node, node,
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&orig_node->neigh_list, list) {
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if (compare_orig(tmp_neigh_node->addr,
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orig_neigh_node->orig) &&
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if (compare_eth(tmp_neigh_node->addr,
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orig_neigh_node->orig) &&
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(tmp_neigh_node->if_incoming == if_incoming))
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neigh_node = tmp_neigh_node;
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}
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@ -192,8 +192,8 @@ static int is_bidirectional_neigh(struct orig_node *orig_node,
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hlist_for_each_entry_rcu(tmp_neigh_node, node,
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&orig_neigh_node->neigh_list, list) {
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if (compare_orig(tmp_neigh_node->addr,
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orig_neigh_node->orig) &&
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if (compare_eth(tmp_neigh_node->addr,
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orig_neigh_node->orig) &&
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(tmp_neigh_node->if_incoming == if_incoming))
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neigh_node = tmp_neigh_node;
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}
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@ -304,8 +304,8 @@ static void bonding_candidate_add(struct orig_node *orig_node,
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spin_lock_bh(&orig_node->neigh_list_lock);
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/* only consider if it has the same primary address ... */
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if (!compare_orig(orig_node->orig,
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neigh_node->orig_node->primary_addr))
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if (!compare_eth(orig_node->orig,
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neigh_node->orig_node->primary_addr))
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goto candidate_del;
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if (!orig_node->router)
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@ -334,7 +334,7 @@ static void bonding_candidate_add(struct orig_node *orig_node,
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continue;
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if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) ||
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(compare_orig(neigh_node->addr, tmp_neigh_node->addr))) {
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(compare_eth(neigh_node->addr, tmp_neigh_node->addr))) {
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interference_candidate = 1;
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break;
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}
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@ -394,7 +394,7 @@ static void update_orig(struct bat_priv *bat_priv,
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rcu_read_lock();
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hlist_for_each_entry_rcu(tmp_neigh_node, node,
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&orig_node->neigh_list, list) {
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if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
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if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
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(tmp_neigh_node->if_incoming == if_incoming) &&
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atomic_inc_not_zero(&tmp_neigh_node->refcount)) {
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if (neigh_node)
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@ -579,7 +579,7 @@ static char count_real_packets(struct ethhdr *ethhdr,
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orig_node->last_real_seqno,
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batman_packet->seqno);
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if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
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if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&
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(tmp_neigh_node->if_incoming == if_incoming))
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set_mark = 1;
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else
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@ -644,8 +644,8 @@ void receive_bat_packet(struct ethhdr *ethhdr,
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has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
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is_single_hop_neigh = (compare_orig(ethhdr->h_source,
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batman_packet->orig) ? 1 : 0);
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is_single_hop_neigh = (compare_eth(ethhdr->h_source,
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batman_packet->orig) ? 1 : 0);
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bat_dbg(DBG_BATMAN, bat_priv,
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"Received BATMAN packet via NB: %pM, IF: %s [%pM] "
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@ -665,19 +665,19 @@ void receive_bat_packet(struct ethhdr *ethhdr,
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if (batman_if->soft_iface != if_incoming->soft_iface)
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continue;
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if (compare_orig(ethhdr->h_source,
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batman_if->net_dev->dev_addr))
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if (compare_eth(ethhdr->h_source,
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batman_if->net_dev->dev_addr))
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is_my_addr = 1;
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if (compare_orig(batman_packet->orig,
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batman_if->net_dev->dev_addr))
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if (compare_eth(batman_packet->orig,
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batman_if->net_dev->dev_addr))
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is_my_orig = 1;
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if (compare_orig(batman_packet->prev_sender,
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batman_if->net_dev->dev_addr))
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if (compare_eth(batman_packet->prev_sender,
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batman_if->net_dev->dev_addr))
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is_my_oldorig = 1;
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if (compare_orig(ethhdr->h_source, broadcast_addr))
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if (compare_eth(ethhdr->h_source, broadcast_addr))
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is_broadcast = 1;
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}
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rcu_read_unlock();
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@ -717,8 +717,8 @@ void receive_bat_packet(struct ethhdr *ethhdr,
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/* if received seqno equals last send seqno save new
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* seqno for bidirectional check */
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if (has_directlink_flag &&
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compare_orig(if_incoming->net_dev->dev_addr,
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batman_packet->orig) &&
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compare_eth(if_incoming->net_dev->dev_addr,
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batman_packet->orig) &&
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(batman_packet->seqno - if_incoming_seqno + 2 == 0)) {
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offset = if_incoming->if_num * NUM_WORDS;
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@ -765,11 +765,11 @@ void receive_bat_packet(struct ethhdr *ethhdr,
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/* avoid temporary routing loops */
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if ((orig_node->router) &&
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(orig_node->router->orig_node->router) &&
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(compare_orig(orig_node->router->addr,
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batman_packet->prev_sender)) &&
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!(compare_orig(batman_packet->orig, batman_packet->prev_sender)) &&
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(compare_orig(orig_node->router->addr,
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orig_node->router->orig_node->router->addr))) {
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(compare_eth(orig_node->router->addr,
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batman_packet->prev_sender)) &&
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!(compare_eth(batman_packet->orig, batman_packet->prev_sender)) &&
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(compare_eth(orig_node->router->addr,
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orig_node->router->orig_node->router->addr))) {
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bat_dbg(DBG_BATMAN, bat_priv,
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"Drop packet: ignoring all rebroadcast packets that "
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"may make me loop (sender: %pM)\n", ethhdr->h_source);
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@ -1185,14 +1185,13 @@ struct neigh_node *find_router(struct bat_priv *bat_priv,
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/* if we have something in the primary_addr, we can search
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* for a potential bonding candidate. */
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if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0)
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if (compare_eth(router_orig->primary_addr, zero_mac))
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goto return_router;
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/* find the orig_node which has the primary interface. might
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* even be the same as our router_orig in many cases */
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if (memcmp(router_orig->primary_addr,
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router_orig->orig, ETH_ALEN) == 0) {
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if (compare_eth(router_orig->primary_addr, router_orig->orig)) {
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primary_orig_node = router_orig;
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} else {
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primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig,
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@ -326,7 +326,7 @@ void schedule_forward_packet(struct orig_node *orig_node,
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if ((orig_node->router) && (orig_node->router->tq_avg != 0)) {
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/* rebroadcast ogm of best ranking neighbor as is */
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if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) {
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if (!compare_eth(orig_node->router->addr, ethhdr->h_source)) {
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batman_packet->tq = orig_node->router->tq_avg;
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if (orig_node->router->last_ttl)
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@ -132,7 +132,7 @@ static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv,
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rcu_read_lock();
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hlist_for_each_entry_rcu(softif_neigh, node,
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&bat_priv->softif_neigh_list, list) {
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if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0)
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if (!compare_eth(softif_neigh->addr, addr))
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continue;
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if (softif_neigh->vid != vid)
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@ -101,7 +101,7 @@ void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
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hna_local_entry->last_seen = jiffies;
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/* the batman interface mac address should never be purged */
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if (compare_orig(addr, soft_iface->dev_addr))
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if (compare_eth(addr, soft_iface->dev_addr))
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hna_local_entry->never_purge = 1;
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else
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hna_local_entry->never_purge = 0;
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@ -75,7 +75,7 @@ static int vis_info_cmp(void *data1, void *data2)
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d2 = data2;
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p1 = (struct vis_packet *)d1->skb_packet->data;
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p2 = (struct vis_packet *)d2->skb_packet->data;
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return compare_orig(p1->vis_orig, p2->vis_orig);
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return compare_eth(p1->vis_orig, p2->vis_orig);
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}
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/* hash function to choose an entry in a hash table of given size */
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@ -113,7 +113,7 @@ static void vis_data_insert_interface(const uint8_t *interface,
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struct hlist_node *pos;
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hlist_for_each_entry(entry, pos, if_list, list) {
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if (compare_orig(entry->addr, (void *)interface))
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if (compare_eth(entry->addr, (void *)interface))
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return;
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}
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@ -165,7 +165,7 @@ static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
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/* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
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if (primary && entry->quality == 0)
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return sprintf(buff, "HNA %pM, ", entry->dest);
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else if (compare_orig(entry->src, src))
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else if (compare_eth(entry->src, src))
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return sprintf(buff, "TQ %pM %d, ", entry->dest,
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entry->quality);
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@ -212,7 +212,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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if (entries[j].quality == 0)
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continue;
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compare =
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compare_orig(entries[j].src, packet->vis_orig);
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compare_eth(entries[j].src, packet->vis_orig);
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vis_data_insert_interface(entries[j].src,
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&vis_if_list,
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compare);
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@ -222,7 +222,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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buf_size += 18 + 26 * packet->entries;
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/* add primary/secondary records */
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if (compare_orig(entry->addr, packet->vis_orig))
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if (compare_eth(entry->addr, packet->vis_orig))
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buf_size +=
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vis_data_count_prim_sec(&vis_if_list);
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@ -258,7 +258,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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if (entries[j].quality == 0)
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continue;
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compare =
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compare_orig(entries[j].src, packet->vis_orig);
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compare_eth(entries[j].src, packet->vis_orig);
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vis_data_insert_interface(entries[j].src,
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&vis_if_list,
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compare);
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@ -276,7 +276,7 @@ int vis_seq_print_text(struct seq_file *seq, void *offset)
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entry->primary);
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/* add primary/secondary records */
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if (compare_orig(entry->addr, packet->vis_orig))
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if (compare_eth(entry->addr, packet->vis_orig))
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buff_pos +=
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vis_data_read_prim_sec(buff + buff_pos,
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&vis_if_list);
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@ -344,7 +344,7 @@ static int recv_list_is_in(struct bat_priv *bat_priv,
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spin_lock_bh(&bat_priv->vis_list_lock);
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list_for_each_entry(entry, recv_list, list) {
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if (memcmp(entry->mac, mac, ETH_ALEN) == 0) {
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if (compare_eth(entry->mac, mac)) {
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spin_unlock_bh(&bat_priv->vis_list_lock);
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return 1;
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}
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@ -617,7 +617,7 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
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if (!neigh_node)
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continue;
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if (!compare_orig(neigh_node->addr, orig_node->orig))
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if (!compare_eth(neigh_node->addr, orig_node->orig))
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continue;
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if (neigh_node->if_incoming->if_status != IF_ACTIVE)
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