diff options
| author | Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de> | 2012-01-22 20:00:19 +0100 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2012-04-11 14:28:58 +0200 |
| commit | 23721387c409087fd3b97e274f34d3ddc0970b74 (patch) | |
| tree | cf386c6f169a1b2b6e8c8ef77be5226e10046689 /net/batman-adv/bat_sysfs.c | |
| parent | batman-adv: remove old bridge loop avoidance code (diff) | |
| download | linux-23721387c409087fd3b97e274f34d3ddc0970b74.tar.xz linux-23721387c409087fd3b97e274f34d3ddc0970b74.zip | |
batman-adv: add basic bridge loop avoidance code
This second version of the bridge loop avoidance for batman-adv
avoids loops between the mesh and a backbone (usually a LAN).
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.
With this patch, batman recognizes backbone gateways, nodes which are
part of the mesh and backbone/LAN at the same time. Each backbone
gateway "claims" clients from within the mesh to handle them
exclusively. By restricting that only responsible backbone gateways
may handle their claimed clients traffic, loops are effectively
avoided.
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/bat_sysfs.c')
| -rw-r--r-- | net/batman-adv/bat_sysfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/batman-adv/bat_sysfs.c b/net/batman-adv/bat_sysfs.c index 68ff759fc304..d12757fbe10a 100644 --- a/net/batman-adv/bat_sysfs.c +++ b/net/batman-adv/bat_sysfs.c @@ -398,7 +398,7 @@ BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE, static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth, store_gw_bwidth); #ifdef CONFIG_BATMAN_ADV_DEBUG -BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 7, NULL); +BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 15, NULL); #endif static struct bat_attribute *mesh_attrs[] = { |