diff options
| author | Marek Lindner <lindner_marek@yahoo.de> | 2010-11-22 00:55:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-29 11:09:11 -0800 |
| commit | 420193573f1191b22e08f85ead41c090d283dd05 (patch) | |
| tree | 617bb5b0e039f80c8a220de8a470e0606332c1a8 /drivers/staging/batman-adv/main.h | |
| parent | 225f7b0b950d141819a8d9694141571b349e563d (diff) | |
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/main.h')
| -rw-r--r-- | drivers/staging/batman-adv/main.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/batman-adv/main.h b/drivers/staging/batman-adv/main.h index 5e3f51681f5e..ec35ef8920bd 100644 --- a/drivers/staging/batman-adv/main.h +++ b/drivers/staging/batman-adv/main.h @@ -71,6 +71,8 @@ * forw_packet->direct_link_flags */ #define MAX_AGGREGATION_MS 100 +#define SOFTIF_NEIGH_TIMEOUT 180000 /* 3 minutes */ + #define RESET_PROTECTION_MS 30000 #define EXPECTED_SEQNO_RANGE 65536 /* don't reset again within 30 seconds */ |