diff options
| author | Marek Lindner <lindner_marek@yahoo.de> | 2010-11-21 23:55:51 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-29 19:09:11 (GMT) |
| commit | 420193573f1191b22e08f85ead41c090d283dd05 (patch) | |
| tree | 617bb5b0e039f80c8a220de8a470e0606332c1a8 /drivers/staging/batman-adv/soft-interface.h | |
| parent | 225f7b0b950d141819a8d9694141571b349e563d (diff) | |
| download | linux-fsl-qoriq-420193573f1191b22e08f85ead41c090d283dd05.tar.xz | |
Staging: batman-adv: softif bridge loop avoidance
By connecting multiple batman-adv mesh nodes to the same ethernet
segment a loop can be created when the soft-interface is bridged
into that ethernet segment. A simple visualization of the loop
involving the most common case - a LAN as ethernet segment:
node1 <-- LAN --> node2
| |
wifi <-- mesh --> wifi
Packets from the LAN (e.g. ARP broadcasts) will circle forever from
node1 or node2 over the mesh back into the LAN.
This patch adds the functionality to detect other batman-adv nodes
connected to the LAN and select a 'gateway' to talk to the
non-batman-adv devices on this LAN. All traffic from and to the mesh
will be handled by this gateway to avoid the loop. OGMs received via
the soft-interface are interpreted as 'port announcements' to locate
potential batman-adv nodes. The patch can also deal with vlans on
top of batX and offers a list of LAN neighbors via debugfs.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
[sven.eckelmann@gmx.de: Rework on top of current version]
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/batman-adv/soft-interface.h')
| -rw-r--r-- | drivers/staging/batman-adv/soft-interface.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/batman-adv/soft-interface.h b/drivers/staging/batman-adv/soft-interface.h index 843a7ec..02b7733 100644 --- a/drivers/staging/batman-adv/soft-interface.h +++ b/drivers/staging/batman-adv/soft-interface.h @@ -23,9 +23,12 @@ #define _NET_BATMAN_ADV_SOFT_INTERFACE_H_ int my_skb_head_push(struct sk_buff *skb, unsigned int len); +int softif_neigh_seq_print_text(struct seq_file *seq, void *offset); +void softif_neigh_purge(struct bat_priv *bat_priv); int interface_tx(struct sk_buff *skb, struct net_device *soft_iface); void interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, int hdr_size); + struct sk_buff *skb, struct batman_if *recv_if, + int hdr_size); struct net_device *softif_create(char *name); void softif_destroy(struct net_device *soft_iface); |