batman-adv: don't add loop detect macs to TT
The bridge loop avoidance (BLA) feature of batman-adv sends packets to probe for Mesh/LAN packet loops. Those packets are not sent by real clients and should therefore not be added to the translation table (TT). Signed-off-by: Simon Wunderlich <simon.wunderlich@open-mesh.com>
This commit is contained in:
parent
32bcad4b7f
commit
d3e9768ab9
|
@ -20,6 +20,8 @@
|
|||
|
||||
#include "main.h"
|
||||
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
struct net_device;
|
||||
|
@ -27,6 +29,22 @@ struct netlink_callback;
|
|||
struct seq_file;
|
||||
struct sk_buff;
|
||||
|
||||
/**
|
||||
* batadv_bla_is_loopdetect_mac - check if the mac address is from a loop detect
|
||||
* frame sent by bridge loop avoidance
|
||||
* @mac: mac address to check
|
||||
*
|
||||
* Return: true if the it looks like a loop detect frame
|
||||
* (mac starts with BA:BE), false otherwise
|
||||
*/
|
||||
static inline bool batadv_bla_is_loopdetect_mac(const uint8_t *mac)
|
||||
{
|
||||
if (mac[0] == 0xba && mac[1] == 0xbe)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_BATMAN_ADV_BLA
|
||||
bool batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb,
|
||||
unsigned short vid, bool is_bcast);
|
||||
|
|
|
@ -258,7 +258,8 @@ static int batadv_interface_tx(struct sk_buff *skb,
|
|||
ethhdr = eth_hdr(skb);
|
||||
|
||||
/* Register the client MAC in the transtable */
|
||||
if (!is_multicast_ether_addr(ethhdr->h_source)) {
|
||||
if (!is_multicast_ether_addr(ethhdr->h_source) &&
|
||||
!batadv_bla_is_loopdetect_mac(ethhdr->h_source)) {
|
||||
client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source,
|
||||
vid, skb->skb_iif,
|
||||
skb->mark);
|
||||
|
|
Loading…
Reference in a new issue