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batman-adv: change interface_rx to get orig node

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In order to understand  where a broadcast packet is coming from and use
this information to detect not yet announced clients, this patch modifies the
interface_rx() function by passing a new argument: the orig node
corresponding to the node that originated the received packet (if known).
This new argument if not NULL for broadcast packets only (other packets does not
have source field).

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
This commit is contained in:
Antonio Quartulli 2012-07-05 23:38:30 +02:00
parent 30cfd02b60
commit 371351731e
3 changed files with 14 additions and 7 deletions
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10
net/batman-adv/routing.c
View file

@ -1012,8 +1012,9 @@ int batadv_recv_unicast_packet(struct sk_buff *skb,
/* packet for me */
if (batadv_is_my_mac(unicast_packet->dest)) {
batadv_interface_rx(recv_if->soft_iface, skb, recv_if,
hdr_size);
batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
NULL);
return NET_RX_SUCCESS;
}
@ -1050,7 +1051,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb,
return NET_RX_SUCCESS;
batadv_interface_rx(recv_if->soft_iface, new_skb, recv_if,
sizeof(struct batadv_unicast_packet));
sizeof(struct batadv_unicast_packet), NULL);
return NET_RX_SUCCESS;
}
@ -1137,7 +1138,8 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
goto out;
/* broadcast for me */
batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
batadv_interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size,
orig_node);
ret = NET_RX_SUCCESS;
goto out;

6
net/batman-adv/soft-interface.c
View file

@ -270,7 +270,7 @@ end:
void batadv_interface_rx(struct net_device *soft_iface,
struct sk_buff *skb, struct batadv_hard_iface *recv_if,
int hdr_size)
int hdr_size, struct batadv_orig_node *orig_node)
{
struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct ethhdr *ethhdr;
@ -322,6 +322,10 @@ void batadv_interface_rx(struct net_device *soft_iface,
soft_iface->last_rx = jiffies;
if (orig_node)
batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
ethhdr->h_source);
if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
goto dropped;

5
net/batman-adv/soft-interface.h
View file

@ -21,8 +21,9 @@
#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_
int batadv_skb_head_push(struct sk_buff *skb, unsigned int len);
void batadv_interface_rx(struct net_device *soft_iface, struct sk_buff *skb,
struct batadv_hard_iface *recv_if, int hdr_size);
void batadv_interface_rx(struct net_device *soft_iface,
struct sk_buff *skb, struct batadv_hard_iface *recv_if,
int hdr_size, struct batadv_orig_node *orig_node);
struct net_device *batadv_softif_create(const char *name);
void batadv_softif_destroy(struct net_device *soft_iface);
int batadv_softif_is_valid(const struct net_device *net_dev);