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2019-02-09batman-adv: Add distributed_arp_table mesh genl configurationSven Eckelmann1-0/+17
The mesh interface can use a distributed hash table to answer ARP requests without flooding the request through the whole mesh. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Add bridge_loop_avoidance mesh genl configurationSven Eckelmann1-0/+17
The mesh interface can try to detect loops in the same mesh caused by (indirectly) bridged mesh/soft-interfaces of different nodes. Some of the loops can also be resolved without breaking the mesh. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Add bonding mesh genl configurationSven Eckelmann1-0/+11
The mesh interface can use multiple slave/hard-interface ports at the same time to transport the traffic to other nodes. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the BATADV_ATTR_BONDING_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Add ap_isolation mesh/vlan genl configurationSven Eckelmann1-0/+89
The mesh interface can drop messages between clients to implement a mesh-wide AP isolation. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH and BATADV_CMD_SET_VLAN/BATADV_CMD_GET_VLAN commands allow to set/get the configuration of this feature using the BATADV_ATTR_AP_ISOLATION_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. This feature also requires that skbuff which should be handled as isolated are marked. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the mark/mask using the u32 attributes BATADV_ATTR_ISOLATION_MARK and BATADV_ATTR_ISOLATION_MASK. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Add aggregated_ogms mesh genl configurationSven Eckelmann1-0/+12
The mesh interface can delay OGM messages to aggregate different ogms together in a single OGM packet. The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the configuration of this feature using the BATADV_ATTR_AGGREGATED_OGMS_ENABLED attribute. Setting the u8 to zero will disable this feature and setting it to something else is enabling this feature. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Prepare framework for vlan genl configSven Eckelmann1-2/+189
The batman-adv configuration interface was implemented solely using sysfs. This approach was condemned by non-batadv developers as "huge mistake". Instead a netlink/genl based implementation was suggested. Beside the mesh/soft-interface specific configuration, the VLANs on top of the mesh/soft-interface have configuration settings. The genl interface reflects this by allowing to get/set it using the vlan specific commands BATADV_CMD_GET_VLAN/BATADV_CMD_SET_VLAN. The set command BATADV_CMD_SET_MESH will also notify interested userspace listeners of the "config" mcast group using the BATADV_CMD_SET_VLAN command message type that settings might have been changed and what the current values are. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Prepare framework for hardif genl configSven Eckelmann1-21/+219
The batman-adv configuration interface was implemented solely using sysfs. This approach was condemned by non-batadv developers as "huge mistake". Instead a netlink/genl based implementation was suggested. Beside the mesh/soft-interface specific configuration, the slave/hard-interface have B.A.T.M.A.N. V specific configuration settings. The genl interface reflects this by allowing to get/set it using the hard-interface specific commands. The BATADV_CMD_GET_HARDIFS (or short version BATADV_CMD_GET_HARDIF) is reused as get command because it already allow sto dump the content of other information from the slave/hard-interface which are not yet configuration specific. The set command BATADV_CMD_SET_HARDIF will also notify interested userspace listeners of the "config" mcast group using the BATADV_CMD_SET_HARDIF command message type that settings might have been changed and what the current values are. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Prepare framework for mesh genl configSven Eckelmann1-62/+98
The batman-adv configuration interface was implemented solely using sysfs. This approach was condemned by non-batadv developers as "huge mistake". Instead a netlink/genl based implementation was suggested. The main objects for this configuration is the mesh/soft-interface object. Its actual object in memory already contains most of the available configuration settings. The genl interface reflects this by allowing to get/set it using the mesh specific commands. The BATADV_CMD_GET_MESH_INFO (or short version BATADV_CMD_GET_MESH) is reused as get command because it already provides the content of other information from the mesh/soft-interface which are not yet configuration specific. The set command BATADV_CMD_SET_MESH will also notify interested userspace listeners of the "config" mcast group using the BATADV_CMD_SET_MESH command message type that settings might have been changed and what the current values are. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-02-09batman-adv: Move common genl doit code pre/post hooksSven Eckelmann1-43/+100
The commit ff4c92d85c6f ("genetlink: introduce pre_doit/post_doit hooks") intoduced a mechanism to run specific code for doit hooks before/after the hooks are run. Since all doit hooks are requiring the batadv softif, it should be retrieved/freed in these helpers to simplify the code. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2019-01-04batman-adv: Update copyright years for 2019Sven Eckelmann1-1/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2018-11-12batman-adv: Add inconsistent hardif netlink dump detectionSven Eckelmann1-10/+14
The netlink dump functionality transfers a large number of entries from the kernel to userspace. It is rather likely that the transfer has to interrupted and later continued. During that time, it can happen that either new entries are added or removed. The userspace could than either receive some entries multiple times or miss entries. Commit 670dc2833d14 ("netlink: advertise incomplete dumps") introduced a mechanism to inform userspace about this problem. Userspace can then decide whether it is necessary or not to retry dumping the information again. The netlink dump functions have to be switched to exclusive locks to avoid changes while the current message is prepared. And an external generation sequence counter is introduced which tracks all modifications of the list. Reported-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2018-03-14batman-adv: add multicast flags netlink supportLinus Lüssing1-0/+12
Dump the list of multicast flags entries via the netlink socket. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2018-03-14batman-adv: add DAT cache netlink supportLinus Lüssing1-33/+43
Dump the list of DAT cache entries via the netlink socket. Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2018-02-26batman-adv: Update copyright years for 2018Sven Eckelmann1-1/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-21batman-adv: Convert packet.h to uapi headerSven Eckelmann1-1/+1
The header file is used by different userspace programs to inject packets or to decode sniffed packets. It should therefore be available to them as userspace header. Also other components in the kernel (like the flow dissector) require access to the packet definitions to be able to decode ETH_P_BATMAN ethernet packets. Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-15batman-adv: Use parentheses in function kernel-docSven Eckelmann1-11/+11
The documentation describing kernel-doc comments for functions ("How to format kernel-doc comments") uses parentheses at the end of the function name. Using this format allows to use a consistent style when adding documentation to a function and when referencing this function in a different kernel-doc section. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: include gfp.h for GFP_* definesSven Eckelmann1-1/+1
The linux/gfp.h provides the GFP_ATOMIC and GFP_KERNEL define. It should therefore be included instead of linux/fs.h. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Add SPDX license identifier above copyright headerSven Eckelmann1-0/+1
The "Linux kernel licensing rules" require that each file has a SPDX license identifier as first line (and sometimes as second line). The FSFE REUSE practices [1] would also require the same tags but have no restrictions on the placement in the source file. Using the "Linux kernel licensing rules" is therefore also fulfilling the FSFE REUSE practices requirements at the same time. [1] https://reuse.software/practices/ Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-01-26batman-adv: update copyright years for 2017Sven Eckelmann1-1/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-10-30batman-adv: Mark batadv_netlink_ops as constSven Eckelmann1-1/+1
The genl_ops don't need to be written by anyone and thus can be moved in a ro memory range. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-10-30batman-adv: Introduce missing headers for genetlink restructureSven Eckelmann1-0/+3
Fixes: 56989f6d8568 ("genetlink: mark families as __ro_after_init") Fixes: 2ae0f17df1cd ("genetlink: use idr to track families") Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-10-27genetlink: mark families as __ro_after_initJohannes Berg1-1/+1
Now genl_register_family() is the only thing (other than the users themselves, perhaps, but I didn't find any doing that) writing to the family struct. In all families that I found, genl_register_family() is only called from __init functions (some indirectly, in which case I've add __init annotations to clarifly things), so all can actually be marked __ro_after_init. This protects the data structure from accidental corruption. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-27genetlink: statically initialize familiesJohannes Berg1-10/+15
Instead of providing macros/inline functions to initialize the families, make all users initialize them statically and get rid of the macros. This reduces the kernel code size by about 1.6k on x86-64 (with allyesconfig). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-27genetlink: no longer support using static family IDsJohannes Berg1-1/+0
Static family IDs have never really been used, the only use case was the workaround I introduced for those users that assumed their family ID was also their multicast group ID. Additionally, because static family IDs would never be reserved by the generic netlink code, using a relatively low ID would only work for built-in families that can be registered immediately after generic netlink is started, which is basically only the control family (apart from the workaround code, which I also had to add code for so it would reserve those IDs) Thus, anything other than GENL_ID_GENERATE is flawed and luckily not used except in the cases I mentioned. Move those workarounds into a few lines of code, and then get rid of GENL_ID_GENERATE entirely, making it more robust. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-01batman: make netlink attributes conststephen hemminger1-2/+2
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-09batman-adv: Indicate netlink socket can be used with netns.Andrew Lunn1-0/+1
Set the netnsof flag on the family structure, indicating it can be used with different network name spaces. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: add backbone table netlink supportSimon Wunderlich1-0/+7
Dump the list of bridge loop avoidance backbones via the netlink socket. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: Provide bla group in the mesh_info netlink msgSven Eckelmann1-0/+8
The bridge loop avoidange is the main information for the debugging of of bridge loop detection problems. It is therefore necessary when comparing the bla claim tables. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: add B.A.T.M.A.N. Dump BLA claims via netlinkAndrew Lunn1-0/+12
Dump the list of bridge loop avoidance claims via the netlink socket. Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: add policy for attributes, fix includes, fix soft_iface reference leak] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> [sw@simonwunderlich.de: fix kerneldoc, fix error reporting] Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: netlink: add gateway table queriesSven Eckelmann1-0/+10
Add BATADV_CMD_GET_GATEWAYS commands, using handlers bat_gw_dump in batadv_algo_ops. Will always return -EOPNOTSUPP for now, as no implementations exist yet. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-08-09batman-adv: add B.A.T.M.A.N. V bat_{orig, neigh}_dump implementationsMatthias Schiffer1-0/+1
Dump the algo V originators and neighbours. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven@narfation.org: Fix includes, fix algo_ops integration] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: add B.A.T.M.A.N. IV bat_{orig, neigh}_dump implementationsMatthias Schiffer1-0/+2
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Fix function parameter alignments, add policy for attributes, fix includes, fix algo_ops integration] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: netlink: add originator and neighbor table queriesMatthias Schiffer1-0/+13
Add BATADV_CMD_GET_ORIGINATORS and BATADV_CMD_GET_NEIGHBORS commands, using handlers bat_orig_dump and bat_neigh_dump in batadv_algo_ops. Will always return -EOPNOTSUPP for now, as no implementations exist yet. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven@narfation.org: Rewrite based on new algo_ops structures] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: Provide TTVN in the mesh_info netlink msgSven Eckelmann1-1/+4
The TTVN is the main information for the debugging of translation table problems. It is therefore necessary when comparing the global translation tables. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: netlink: add translation table queryMatthias Schiffer1-1/+22
This adds the commands BATADV_CMD_GET_TRANSTABLE_LOCAL and BATADV_CMD_GET_TRANSTABLE_GLOBAL, which correspond to the transtable_local and transtable_global debugfs files. The batadv_tt_client_flags enum is moved to the UAPI to expose it as part of the netlink API. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: add policy for attributes, fix includes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> [sw@simonwunderlich.de: fix VID attributes content] Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: netlink: hardif queryMatthias Schiffer1-2/+126
BATADV_CMD_GET_HARDIFS will return the list of hardifs (including index, name and MAC address) of all hardifs for a given softif. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_HARDIFS, add policy for attributes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-08-09batman-adv: netlink: add routing_algo queryMatthias Schiffer1-1/+8
BATADV_CMD_GET_ROUTING_ALGOS is used to get the list of supported routing algorithms. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_ROUTING_ALGOS, fix includes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-07-04batman-adv: split routing API data structure in subobjectsAntonio Quartulli1-1/+1
The routing API data structure contains several function pointers that can easily be grouped together based on the component they work with. Split the API in subobjects in order to improve definition readability. At the same time, remove the "bat_" prefix from the API object and its fields names. These are batman-adv private structs and there is no need to always prepend such prefix, which only makes function invocations much much longer. Signed-off-by: Antonio Quartulli <a@unstable.cc> Reviewed-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-07-04batman-adv: throughput meter implementationAntonio Quartulli1-2/+232
The throughput meter module is a simple, kernel-space replacement for throughtput measurements tool like iperf and netperf. It is intended to approximate TCP behaviour. It is invoked through batctl: the protocol is connection oriented, with cumulative acknowledgment and a dynamic-size sliding window. The test *can* be interrupted by batctl. A receiver side timeout avoids unlimited waitings for sender packets: after one second of inactivity, the receiver abort the ongoing test. Based on a prototype from Edo Monticelli <montik@autistici.org> Signed-off-by: Antonio Quartulli <antonio.quartulli@open-mesh.com> Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-07-04batman-adv: add netlink command to query generic mesh information filesMatthias Schiffer1-0/+137
BATADV_CMD_GET_MESH_INFO is used to query basic information about a batman-adv softif (name, index and MAC address for both the softif and the primary hardif; routing algorithm; batman-adv version). Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Reduce the number of changes to BATADV_CMD_GET_MESH_INFO, add missing kerneldoc, add policy for attributes] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2016-07-04batman-adv: add generic netlink family for batman-advMatthias Schiffer1-0/+57
debugfs is currently severely broken virtually everywhere in the kernel where files are dynamically added and removed (see http://lkml.iu.edu/hypermail/linux/kernel/1506.1/02196.html for some details). In addition to that, debugfs is not namespace-aware. Instead of adding new debugfs entries, the whole infrastructure should be moved to netlink. This will fix the long standing problem of large buffers for debug tables and hard to parse text files. Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> Signed-off-by: Andrew Lunn <andrew@lunn.ch> [sven.eckelmann@open-mesh.com: Strip down patch to only add genl family, add missing kerneldoc] Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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