lwn.git/Documentation/ABI/testing/sysfs-class-net-mesh, branch master

batman-adv: ABI: Mark sysfs files as deprecated

2019-03-25T09:01:12+00:00

The sysfs files are replaced by the batadv generic netlink family. The old sysfs configuration interface was frowned upon by other kernel developers. But the files cannot be removed immediately because userspace tools might still depend on it. Instead schedule for its removal in 2021. Signed-off-by: Sven Eckelmann Signed-off-by: Simon Wunderlich

Doc: update email address

2015-12-15T16:21:40+00:00

My personal email address has changed. Update it in the doc files Signed-off-by: Antonio Quartulli

batman-adv: Modified forwarding behaviour for multicast packets

2014-03-22T08:18:57+00:00

With this patch a multicast packet is not always simply flooded anymore, the behaviour for the following cases is changed to reduce unnecessary overhead: If all nodes within the horizon of a certain node have signalized multicast listener announcement capability then an IPv6 multicast packet with a destination of IPv6 link-local scope (excluding ff02::1) coming from the upstream of this node... * ...is dropped if there is no according multicast listener in the translation table, * ...is forwarded via unicast if there is a single node with interested multicast listeners * ...and otherwise still gets flooded. Signed-off-by: Linus Lüssing Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli

batman-adv: add isolation_mark sysfs attribute

2014-01-08T19:49:42+00:00

This attribute can be used to set and read the value and the mask of the skb mark which will be used to classify the source non-mesh client as ISOLATED. In this way a client can be advertised as such and the mark can potentially be restored at the receiving node before delivering the skb. This can be helpful for creating network wide netfilter policies. This sysfs file expects a string of the shape "$mark/$mask". Where $mark has to be a 32-bit number in any base, while $mask must be a 32bit mask expressed in hex base. Only bits in $mark covered by the bitmask are really stored. Signed-off-by: Antonio Quartulli Signed-off-by: Marek Lindner

batman-adv: make the AP isolation attribute VLAN specific

2013-10-19T15:28:47+00:00

AP isolation has to be enabled on one VLAN interface only. This patch moves the AP isolation attribute to the per-vlan interface attribute set, enabling it to have a different value depending on the selected vlan. Signed-off-by: Antonio Quartulli Signed-off-by: Marek Lindner

batman-adv: update email address for Marek Lindner

2013-10-19T12:53:48+00:00

Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli

batman-adv: update email address for Antonio Quartulli

2013-10-19T12:53:47+00:00

Signed-off-by: Antonio Quartulli Signed-off-by: Marek Lindner

batman-adv: update email address for Simon Wunderlich

2013-10-19T12:53:41+00:00

My university will stop email service for alumni in january 2014, please use my new e-mail address instead. Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner

batman-adv: remove vis functionality

2013-10-09T19:22:32+00:00

This is replaced by a userspace program, we don't need this functionality to bloat the kernel. Signed-off-by: Simon Wunderlich Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli

batman-adv: network coding - add the initial infrastructure code

2013-03-13T21:53:48+00:00

Network coding exploits the 802.11 shared medium to allow multiple packets to be sent in a single transmission. In brief, a relay can XOR two packets, and send the coded packet to two destinations. The receivers can decode one of the original packets by XOR'ing the coded packet with the other original packet. This will lead to increased throughput in topologies where two packets cross one relay. In a simple topology with three nodes, it takes four transmissions without network coding to get one packet from Node A to Node B and one from Node B to Node A: 1. Node A ---- p1 ---> Node R Node B 2. Node A Node R <--- p2 ---- Node B 3. Node A <--- p2 ---- Node R Node B 4. Node A Node R ---- p1 ---> Node B With network coding, the relay only needs one transmission, which saves us one slot of valuable airtime: 1. Node A ---- p1 ---> Node R Node B 2. Node A Node R <--- p2 ---- Node B 3. Node A <- p1 x p2 - Node R - p1 x p2 -> Node B The same principle holds for a topology including five nodes. Here the packets from Node A and Node B are overheard by Node C and Node D, respectively. This allows Node R to send a network coded packet to save one transmission: Node A Node B | \ / | | p1 p2 | | \ / | p1 > Node R < p2 | | | / \ | | p1 x p2 p1 x p2 | v / \ v / \ Node C < > Node D More information is available on the open-mesh.org wiki[1]. This patch adds the initial code to support network coding in batman-adv. It sets up a worker thread to do house keeping and adds a sysfs file to enable/disable network coding. The feature is disabled by default, as it requires a wifi-driver with working promiscuous mode, and also because it adds a small delay at each hop. [1] http://www.open-mesh.org/projects/batman-adv/wiki/Catwoman Signed-off-by: Martin Hundebøll Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli