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Commit 59b699cd authored by Antonio Quartulli's avatar Antonio Quartulli Committed by Marek Lindner
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batman-adv: implement AP-isolation on the receiver side 



When a node receives a unicast packet it checks if the source and the
destination client can communicate or not due to the AP isolation

Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
parent bc279080

Documentation/ABI/testing/sysfs-class-net-mesh

+8 −0
Original line number Original line Diff line number Diff line
@@ -22,6 +22,14 @@ Description: 
                mesh will be fragmented or silently discarded if the

                mesh will be fragmented or silently discarded if the

                packet size exceeds the outgoing interface MTU.

                packet size exceeds the outgoing interface MTU.





What:		/sys/class/net/<mesh_iface>/mesh/ap_isolation

Date:		May 2011

Contact:	Antonio Quartulli <ordex@autistici.org>

Description:

		Indicates whether the data traffic going from a

		wireless client to another wireless client will be

		silently dropped.



What:           /sys/class/net/<mesh_iface>/mesh/gw_bandwidth

What:           /sys/class/net/<mesh_iface>/mesh/gw_bandwidth

Date:           October 2010

Date:           October 2010

Contact:        Marek Lindner <lindner_marek@yahoo.de>

Contact:        Marek Lindner <lindner_marek@yahoo.de>

net/batman-adv/bat_sysfs.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -380,6 +380,7 @@ static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr, 
BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);

BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);

BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);

BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);

BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);

BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);

BAT_ATTR_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);

static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);

static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);

static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);

static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);

BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);

BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
@@ -396,6 +397,7 @@ static struct bat_attribute *mesh_attrs[] = { 
	&bat_attr_aggregated_ogms,

	&bat_attr_aggregated_ogms,

	&bat_attr_bonding,

	&bat_attr_bonding,

	&bat_attr_fragmentation,

	&bat_attr_fragmentation,

	&bat_attr_ap_isolation,

	&bat_attr_vis_mode,

	&bat_attr_vis_mode,

	&bat_attr_gw_mode,

	&bat_attr_gw_mode,

	&bat_attr_orig_interval,

	&bat_attr_orig_interval,

net/batman-adv/soft-interface.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -739,6 +739,9 @@ void interface_rx(struct net_device *soft_iface, 




	soft_iface->last_rx = jiffies;

	soft_iface->last_rx = jiffies;





	if (is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))

		goto dropped;



	netif_rx(skb);

	netif_rx(skb);

	goto out;

	goto out;
@@ -812,6 +815,7 @@ struct net_device *softif_create(const char *name) 




	atomic_set(&bat_priv->aggregated_ogms, 1);

	atomic_set(&bat_priv->aggregated_ogms, 1);

	atomic_set(&bat_priv->bonding, 0);

	atomic_set(&bat_priv->bonding, 0);

	atomic_set(&bat_priv->ap_isolation, 0);

	atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);

	atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);

	atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);

	atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);

	atomic_set(&bat_priv->gw_sel_class, 20);

	atomic_set(&bat_priv->gw_sel_class, 20);

net/batman-adv/translation-table.c

+42 −0
Original line number Original line Diff line number Diff line
@@ -781,6 +781,18 @@ static void tt_global_table_free(struct bat_priv *bat_priv) 
	bat_priv->tt_global_hash = NULL;

	bat_priv->tt_global_hash = NULL;

}

}





static bool _is_ap_isolated(struct tt_local_entry *tt_local_entry,

			    struct tt_global_entry *tt_global_entry)

{

	bool ret = false;



	if (tt_local_entry->flags & TT_CLIENT_WIFI &&

	    tt_global_entry->flags & TT_CLIENT_WIFI)

		ret = true;



	return ret;

}



struct orig_node *transtable_search(struct bat_priv *bat_priv,

struct orig_node *transtable_search(struct bat_priv *bat_priv,

				    const uint8_t *addr)

				    const uint8_t *addr)

{

{
@@ -1729,3 +1741,33 @@ void tt_commit_changes(struct bat_priv *bat_priv) 
	atomic_inc(&bat_priv->ttvn);

	atomic_inc(&bat_priv->ttvn);

	bat_priv->tt_poss_change = false;

	bat_priv->tt_poss_change = false;

}

}



bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst)

{

	struct tt_local_entry *tt_local_entry = NULL;

	struct tt_global_entry *tt_global_entry = NULL;

	bool ret = true;



	if (!atomic_read(&bat_priv->ap_isolation))

		return false;



	tt_local_entry = tt_local_hash_find(bat_priv, dst);

	if (!tt_local_entry)

		goto out;



	tt_global_entry = tt_global_hash_find(bat_priv, src);

	if (!tt_global_entry)

		goto out;



	if (_is_ap_isolated(tt_local_entry, tt_global_entry))

		goto out;



	ret = false;



out:

	if (tt_global_entry)

		tt_global_entry_free_ref(tt_global_entry);

	if (tt_local_entry)

		tt_local_entry_free_ref(tt_local_entry);

	return ret;

}

net/batman-adv/translation-table.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -63,5 +63,6 @@ void handle_tt_response(struct bat_priv *bat_priv, 
void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client,

void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client,

		   struct orig_node *orig_node);

		   struct orig_node *orig_node);

void tt_commit_changes(struct bat_priv *bat_priv);

void tt_commit_changes(struct bat_priv *bat_priv);

bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst);





#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
 
#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */