Commit 39901e71 authored by Marek Lindner's avatar Marek Lindner
Browse files

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: default avatarMarek Lindner <lindner_marek@yahoo.de>
parent 9e0b33c2

net/batman-adv/hard-interface.c

+1 −1
Original line number Diff line number Diff line
@@ -187,7 +187,7 @@ static void check_known_mac_addr(struct net_device *net_dev) 
		if (batman_if->net_dev == net_dev)

			continue;



		if (!compare_orig(batman_if->net_dev->dev_addr,

		if (!compare_eth(batman_if->net_dev->dev_addr,

				  net_dev->dev_addr))

			continue;

net/batman-adv/main.c

+1 −1
Original line number Diff line number Diff line
@@ -161,7 +161,7 @@ int is_my_mac(uint8_t *addr) 
		if (batman_if->if_status != IF_ACTIVE)

			continue;



		if (compare_orig(batman_if->net_dev->dev_addr, addr)) {

		if (compare_eth(batman_if->net_dev->dev_addr, addr)) {

			rcu_read_unlock();

			return 1;

		}

net/batman-adv/main.h

+10 −0
Original line number Diff line number Diff line
@@ -165,4 +165,14 @@ static inline void bat_dbg(char type __always_unused, 
		pr_err("%s: " fmt, _netdev->name, ## arg);		\

	} while (0)



/**

 * returns 1 if they are the same ethernet addr

 *

 * note: can't use compare_ether_addr() as it requires aligned memory

 */

static inline int compare_eth(void *data1, void *data2)

{

	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);

}



#endif /* _NET_BATMAN_ADV_MAIN_H_ */

net/batman-adv/routing.c

+27 −28
Original line number Diff line number Diff line
@@ -163,7 +163,7 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, 
		hlist_for_each_entry_rcu(tmp_neigh_node, node,

					 &orig_node->neigh_list, list) {



			if (compare_orig(tmp_neigh_node->addr,

			if (compare_eth(tmp_neigh_node->addr,

					orig_neigh_node->orig) &&

			    (tmp_neigh_node->if_incoming == if_incoming))

				neigh_node = tmp_neigh_node;
@@ -192,7 +192,7 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, 
		hlist_for_each_entry_rcu(tmp_neigh_node, node,

					 &orig_neigh_node->neigh_list, list) {



			if (compare_orig(tmp_neigh_node->addr,

			if (compare_eth(tmp_neigh_node->addr,

					orig_neigh_node->orig) &&

			    (tmp_neigh_node->if_incoming == if_incoming))

				neigh_node = tmp_neigh_node;
@@ -304,7 +304,7 @@ static void bonding_candidate_add(struct orig_node *orig_node, 
	spin_lock_bh(&orig_node->neigh_list_lock);



	/* only consider if it has the same primary address ...  */

	if (!compare_orig(orig_node->orig,

	if (!compare_eth(orig_node->orig,

			 neigh_node->orig_node->primary_addr))

		goto candidate_del;
@@ -334,7 +334,7 @@ static void bonding_candidate_add(struct orig_node *orig_node, 
			continue;



		if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) ||

		    (compare_orig(neigh_node->addr, tmp_neigh_node->addr))) {

		    (compare_eth(neigh_node->addr, tmp_neigh_node->addr))) {

			interference_candidate = 1;

			break;

		}
@@ -394,7 +394,7 @@ static void update_orig(struct bat_priv *bat_priv, 
	rcu_read_lock();

	hlist_for_each_entry_rcu(tmp_neigh_node, node,

				 &orig_node->neigh_list, list) {

		if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&

		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&

		    (tmp_neigh_node->if_incoming == if_incoming) &&

		     atomic_inc_not_zero(&tmp_neigh_node->refcount)) {

			if (neigh_node)
@@ -579,7 +579,7 @@ static char count_real_packets(struct ethhdr *ethhdr, 
					       orig_node->last_real_seqno,

					       batman_packet->seqno);



		if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&

		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&

		    (tmp_neigh_node->if_incoming == if_incoming))

			set_mark = 1;

		else
@@ -644,7 +644,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, 


	has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);



	is_single_hop_neigh = (compare_orig(ethhdr->h_source,

	is_single_hop_neigh = (compare_eth(ethhdr->h_source,

					   batman_packet->orig) ? 1 : 0);



	bat_dbg(DBG_BATMAN, bat_priv,
@@ -665,19 +665,19 @@ void receive_bat_packet(struct ethhdr *ethhdr, 
		if (batman_if->soft_iface != if_incoming->soft_iface)

			continue;



		if (compare_orig(ethhdr->h_source,

		if (compare_eth(ethhdr->h_source,

				batman_if->net_dev->dev_addr))

			is_my_addr = 1;



		if (compare_orig(batman_packet->orig,

		if (compare_eth(batman_packet->orig,

				batman_if->net_dev->dev_addr))

			is_my_orig = 1;



		if (compare_orig(batman_packet->prev_sender,

		if (compare_eth(batman_packet->prev_sender,

				batman_if->net_dev->dev_addr))

			is_my_oldorig = 1;



		if (compare_orig(ethhdr->h_source, broadcast_addr))

		if (compare_eth(ethhdr->h_source, broadcast_addr))

			is_broadcast = 1;

	}

	rcu_read_unlock();
@@ -717,7 +717,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, 
		/* if received seqno equals last send seqno save new

		 * seqno for bidirectional check */

		if (has_directlink_flag &&

		    compare_orig(if_incoming->net_dev->dev_addr,

		    compare_eth(if_incoming->net_dev->dev_addr,

				batman_packet->orig) &&

		    (batman_packet->seqno - if_incoming_seqno + 2 == 0)) {

			offset = if_incoming->if_num * NUM_WORDS;
@@ -765,10 +765,10 @@ void receive_bat_packet(struct ethhdr *ethhdr, 
	/* avoid temporary routing loops */

	if ((orig_node->router) &&

	    (orig_node->router->orig_node->router) &&

	    (compare_orig(orig_node->router->addr,

	    (compare_eth(orig_node->router->addr,

			 batman_packet->prev_sender)) &&

	    !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) &&

	    (compare_orig(orig_node->router->addr,

	    !(compare_eth(batman_packet->orig, batman_packet->prev_sender)) &&

	    (compare_eth(orig_node->router->addr,

			 orig_node->router->orig_node->router->addr))) {

		bat_dbg(DBG_BATMAN, bat_priv,

			"Drop packet: ignoring all rebroadcast packets that "
@@ -1185,14 +1185,13 @@ struct neigh_node *find_router(struct bat_priv *bat_priv, 


	/* if we have something in the primary_addr, we can search

	 * for a potential bonding candidate. */

	if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0)

	if (compare_eth(router_orig->primary_addr, zero_mac))

		goto return_router;



	/* find the orig_node which has the primary interface. might

	 * even be the same as our router_orig in many cases */



	if (memcmp(router_orig->primary_addr,

				router_orig->orig, ETH_ALEN) == 0) {

	if (compare_eth(router_orig->primary_addr, router_orig->orig)) {

		primary_orig_node = router_orig;

	} else {

		primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig,

net/batman-adv/send.c

+1 −1
Original line number Diff line number Diff line
@@ -326,7 +326,7 @@ void schedule_forward_packet(struct orig_node *orig_node, 
	if ((orig_node->router) && (orig_node->router->tq_avg != 0)) {



		/* rebroadcast ogm of best ranking neighbor as is */

		if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) {

		if (!compare_eth(orig_node->router->addr, ethhdr->h_source)) {

			batman_packet->tq = orig_node->router->tq_avg;



			if (orig_node->router->last_ttl)

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