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Commit fe8a93b9 authored by Antonio Quartulli's avatar Antonio Quartulli
Browse files

batman-adv: make is_my_mac() check for the current mesh only 



On a multi-mesh node (a node running more than one batman-adv
virtual interface) batadv_is_my_mac() has to check MAC
addresses of hard interfaces belonging to the current mesh
only.

Signed-off-by: default avatarAntonio Quartulli <ordex@autistici.org>
Signed-off-by: default avatarMarek Lindner <lindner_marek@yahoo.de>
parent 361cd29c

net/batman-adv/main.c

+4 −1
Original line number Diff line number Diff line
@@ -169,7 +169,7 @@ void batadv_mesh_free(struct net_device *soft_iface) 
	atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);

}



int batadv_is_my_mac(const uint8_t *addr)

int batadv_is_my_mac(struct batadv_priv *bat_priv, const uint8_t *addr)

{

	const struct batadv_hard_iface *hard_iface;
@@ -178,6 +178,9 @@ int batadv_is_my_mac(const uint8_t *addr) 
		if (hard_iface->if_status != BATADV_IF_ACTIVE)

			continue;



		if (hard_iface->soft_iface != bat_priv->soft_iface)

			continue;



		if (batadv_compare_eth(hard_iface->net_dev->dev_addr, addr)) {

			rcu_read_unlock();

			return 1;

net/batman-adv/main.h

+1 −1
Original line number Diff line number Diff line
@@ -162,7 +162,7 @@ extern struct workqueue_struct *batadv_event_workqueue; 


int batadv_mesh_init(struct net_device *soft_iface);

void batadv_mesh_free(struct net_device *soft_iface);

int batadv_is_my_mac(const uint8_t *addr);

int batadv_is_my_mac(struct batadv_priv *bat_priv, const uint8_t *addr);

struct batadv_hard_iface *

batadv_seq_print_text_primary_if_get(struct seq_file *seq);

int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,

net/batman-adv/routing.c

+20 −18
Original line number Diff line number Diff line
@@ -402,7 +402,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, 
		goto out;



	/* not for me */

	if (!batadv_is_my_mac(ethhdr->h_dest))

	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))

		goto out;



	icmp_packet = (struct batadv_icmp_packet_rr *)skb->data;
@@ -416,7 +416,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, 
	}



	/* packet for me */

	if (batadv_is_my_mac(icmp_packet->dst))

	if (batadv_is_my_mac(bat_priv, icmp_packet->dst))

		return batadv_recv_my_icmp_packet(bat_priv, skb, hdr_size);



	/* TTL exceeded */
@@ -548,7 +548,8 @@ batadv_find_ifalter_router(struct batadv_orig_node *primary_orig, 
	return router;

}



static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size)

static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,

				       struct sk_buff *skb, int hdr_size)

{

	struct ethhdr *ethhdr;
@@ -567,7 +568,7 @@ static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size) 
		return -1;



	/* not for me */

	if (!batadv_is_my_mac(ethhdr->h_dest))

	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))

		return -1;



	return 0;
@@ -582,7 +583,7 @@ int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if) 
	char tt_flag;

	size_t packet_size;



	if (batadv_check_unicast_packet(skb, hdr_size) < 0)

	if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0)

		return NET_RX_DROP;



	/* I could need to modify it */
@@ -614,7 +615,7 @@ int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if) 
	case BATADV_TT_RESPONSE:

		batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_RX);



		if (batadv_is_my_mac(tt_query->dst)) {

		if (batadv_is_my_mac(bat_priv, tt_query->dst)) {

			/* packet needs to be linearized to access the TT

			 * changes

			 */
@@ -657,14 +658,15 @@ int batadv_recv_roam_adv(struct sk_buff *skb, struct batadv_hard_iface *recv_if) 
	struct batadv_roam_adv_packet *roam_adv_packet;

	struct batadv_orig_node *orig_node;



	if (batadv_check_unicast_packet(skb, sizeof(*roam_adv_packet)) < 0)

	if (batadv_check_unicast_packet(bat_priv, skb,

					sizeof(*roam_adv_packet)) < 0)

		goto out;



	batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_RX);



	roam_adv_packet = (struct batadv_roam_adv_packet *)skb->data;



	if (!batadv_is_my_mac(roam_adv_packet->dst))

	if (!batadv_is_my_mac(bat_priv, roam_adv_packet->dst))

		return batadv_route_unicast_packet(skb, recv_if);



	/* check if it is a backbone gateway. we don't accept
@@ -967,7 +969,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, 
	 * last time) the packet had an updated information or not

	 */

	curr_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn);

	if (!batadv_is_my_mac(unicast_packet->dest)) {

	if (!batadv_is_my_mac(bat_priv, unicast_packet->dest)) {

		orig_node = batadv_orig_hash_find(bat_priv,

						  unicast_packet->dest);

		/* if it is not possible to find the orig_node representing the
@@ -1044,14 +1046,14 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, 
	if (is4addr)

		hdr_size = sizeof(*unicast_4addr_packet);



	if (batadv_check_unicast_packet(skb, hdr_size) < 0)

	if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0)

		return NET_RX_DROP;



	if (!batadv_check_unicast_ttvn(bat_priv, skb))

		return NET_RX_DROP;



	/* packet for me */

	if (batadv_is_my_mac(unicast_packet->dest)) {

	if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) {

		if (is4addr) {

			batadv_dat_inc_counter(bat_priv,

					       unicast_4addr_packet->subtype);
@@ -1088,7 +1090,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, 
	struct sk_buff *new_skb = NULL;

	int ret;



	if (batadv_check_unicast_packet(skb, hdr_size) < 0)

	if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0)

		return NET_RX_DROP;



	if (!batadv_check_unicast_ttvn(bat_priv, skb))
@@ -1097,7 +1099,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, 
	unicast_packet = (struct batadv_unicast_frag_packet *)skb->data;



	/* packet for me */

	if (batadv_is_my_mac(unicast_packet->dest)) {

	if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) {

		ret = batadv_frag_reassemble_skb(skb, bat_priv, &new_skb);



		if (ret == NET_RX_DROP)
@@ -1151,13 +1153,13 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, 
		goto out;



	/* ignore broadcasts sent by myself */

	if (batadv_is_my_mac(ethhdr->h_source))

	if (batadv_is_my_mac(bat_priv, ethhdr->h_source))

		goto out;



	bcast_packet = (struct batadv_bcast_packet *)skb->data;



	/* ignore broadcasts originated by myself */

	if (batadv_is_my_mac(bcast_packet->orig))

	if (batadv_is_my_mac(bat_priv, bcast_packet->orig))

		goto out;



	if (bcast_packet->header.ttl < 2)
@@ -1243,14 +1245,14 @@ int batadv_recv_vis_packet(struct sk_buff *skb, 
	ethhdr = (struct ethhdr *)skb_mac_header(skb);



	/* not for me */

	if (!batadv_is_my_mac(ethhdr->h_dest))

	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest))

		return NET_RX_DROP;



	/* ignore own packets */

	if (batadv_is_my_mac(vis_packet->vis_orig))

	if (batadv_is_my_mac(bat_priv, vis_packet->vis_orig))

		return NET_RX_DROP;



	if (batadv_is_my_mac(vis_packet->sender_orig))

	if (batadv_is_my_mac(bat_priv, vis_packet->sender_orig))

		return NET_RX_DROP;



	switch (vis_packet->vis_type) {

net/batman-adv/translation-table.c

+1 −1
Original line number Diff line number Diff line
@@ -1953,7 +1953,7 @@ batadv_send_my_tt_response(struct batadv_priv *bat_priv, 
bool batadv_send_tt_response(struct batadv_priv *bat_priv,

			     struct batadv_tt_query_packet *tt_request)

{

	if (batadv_is_my_mac(tt_request->dst)) {

	if (batadv_is_my_mac(bat_priv, tt_request->dst)) {

		/* don't answer backbone gws! */

		if (batadv_bla_is_backbone_gw_orig(bat_priv, tt_request->src))

			return true;

net/batman-adv/vis.c

+2 −2
Original line number Diff line number Diff line
@@ -477,7 +477,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, 


	/* Are we the target for this VIS packet? */

	if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC	&&

	    batadv_is_my_mac(vis_packet->target_orig))

	    batadv_is_my_mac(bat_priv, vis_packet->target_orig))

		are_target = 1;



	spin_lock_bh(&bat_priv->vis.hash_lock);
@@ -496,7 +496,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, 
		batadv_send_list_add(bat_priv, info);



		/* ... we're not the recipient (and thus need to forward). */

	} else if (!batadv_is_my_mac(packet->target_orig)) {

	} else if (!batadv_is_my_mac(bat_priv, packet->target_orig)) {

		batadv_send_list_add(bat_priv, info);

	}