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path: root/net/batman-adv/types.h (follow)
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2016-02-29batman-adv: ELP - compute the metric based on the estimated throughputAntonio Quartulli1-0/+16
In case of wireless interface retrieve the throughput by querying cfg80211. To perform this call a separate work must be scheduled because the function may sleep and this is not allowed within an RCU protected context (RCU in this case is used to iterate over all the neighbours). Use ethtool to retrieve information about an Ethernet link like HALF/FULL_DUPLEX and advertised bandwidth (e.g. 100/10Mbps). The metric is updated each time a new ELP packet is sent, this way it is possible to timely react to a metric variation which can imply (for example) a neighbour disconnection. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-02-29batman-adv: keep track of when unicast packets are sentAntonio Quartulli1-0/+2
To enable ELP to send probing packets over wireless links only if needed, batman-adv must keep track of the last time it sent a unicast packet towards every neighbour. For this purpose a 2 main changes are introduced: 1) a new member of the elp_neigh_node structure stores the last time a unicast packet was sent towards this neighbour; 2) a wrapper function for sending unicast packets is implemented. This function will simply update the member describe din point 1) and then forward the packet to the real sending routine. Point 2) implies that any code-path leading to a unicast sending now has to use the new wrapper. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-02-29batman-adv: add throughput override attribute to hard_ifacesAntonio Quartulli1-0/+2
This attribute is exported to user space to disable the link throughput auto-detection by setting a fixed value. The throughput override value is used when batman-adv is computing the link throughput towards a neighbour. If the value is set to 0 then batman-adv will try to detect the throughput by itself. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-02-29batman-adv: OGMv2 - implement originators logicAntonio Quartulli1-0/+4
Add the support for recognising new originators in the network and rebroadcast their OGMs. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-02-29batman-adv: OGMv2 - add basic infrastructureAntonio Quartulli1-0/+18
This is the initial implementation of the new OGM protocol (version 2). It has been designed to work on top of the newly added ELP. In the previous version the OGM protocol was used to both measure link qualities and flood the network with the metric information. In this version the protocol is in charge of the latter task only, leaving the former to ELP. This means being able to decouple the interval used by the neighbor discovery from the OGM broadcasting, which revealed to be costly in dense networks and needed to be relaxed so leading to a less responsive routing protocol. Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-02-29batman-adv: ELP - creating neighbor structuresLinus Luessing1-0/+33
Initially developed by Linus during a 6 months trainee study period in Ascom (Switzerland) AG. Signed-off-by: Linus Luessing <linus.luessing@web.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
2016-02-29batman-adv: ELP - adding basic infrastructureLinus Luessing1-0/+18
The B.A.T.M.A.N. protocol originally only used a single message type (called OGM) to determine the link qualities to the direct neighbors and spreading these link quality information through the whole mesh. This procedure is summarized on the BATMAN concept page and explained in details in the RFC draft published in 2008. This approach was chosen for its simplicity during the protocol design phase and the implementation. However, it also bears some drawbacks: * Wireless interfaces usually come with some packet loss, therefore a higher broadcast rate is desirable to allow a fast reaction on flaky connections. Other interfaces of the same host might be connected to Ethernet LANs / VPNs / etc which rarely exhibit packet loss would benefit from a lower broadcast rate to reduce overhead. * It generally is more desirable to detect local link quality changes at a faster rate than propagating all these changes through the entire mesh (the far end of the mesh does not need to care about local link quality changes that much). Other optimizations strategies, like reducing overhead, might be possible if OGMs weren't used for all tasks in the mesh at the same time. As a result detecting local link qualities shall be handled by an independent message type, ELP, whereas the OGM message type remains responsible for flooding the mesh with these link quality information and determining the overall path transmit qualities. Developed by Linus during a 6 months trainee study period in Ascom (Switzerland) AG. Signed-off-by: Linus Luessing <linus.luessing@web.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
2016-02-10batman-adv: Convert batadv_tt_common_entry to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_orig_node to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_orig_node_vlan to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_hard_iface to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_neigh_node to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_orig_ifinfo to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_neigh_ifinfo to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_tt_orig_list_entry to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_tvlv_handler to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_tvlv_container to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_dat_entry to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_nc_path to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_nc_node to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_bla_claim to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_bla_backbone_gw to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_softif_vlan to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_gw_node to krefSven Eckelmann1-1/+1
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-10batman-adv: Convert batadv_hardif_neigh_node to krefSven Eckelmann1-1/+2
batman-adv uses a self-written reference implementation which is just based on atomic_t. This is less obvious when reading the code than kref and therefore increases the change that the reference counting will be missed. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-02batman-adv: update copyright years for 2016Sven Eckelmann1-1/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-02batman-adv: add kernel doc for AP isolation attributes in bat_privAntonio Quartulli1-0/+3
Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-02batman-adv: kernel doc readability updatesMarek Lindner1-12/+13
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-02batman-adv: Fix kerneldoc parsing of structs/enumsSven Eckelmann1-1/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-01-09batman-adv: Add kerneldoc for batadv_neigh_node::refcountSven Eckelmann1-0/+1
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-01-09batman-adv: Remove kerneldoc for missing struct membersSven Eckelmann1-4/+0
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-01-09batman-adv: Fix kerneldoc member names in for main structsSven Eckelmann1-6/+6
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-01-09batman-adv: Fix kernel-doc parsing of main structsSven Eckelmann1-5/+10
kernel-doc is not able to skip an #ifdef between the kernel documentation block and the start of the struct. Moving the #ifdef before the kernel doc block avoids this problem Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <a@unstable.cc>
2015-12-16batman-adv: lock crc access in bridge loop avoidanceSimon Wunderlich1-0/+2
We have found some networks in which nodes were constantly requesting other nodes BLA claim tables to synchronize, just to ask for that again once completed. The reason was that the crc checksum of the asked nodes were out of sync due to missing locking and multiple writes to the same crc checksum when adding/removing entries. Therefore the asked nodes constantly reported the wrong crc, which caused repeating requests. To avoid multiple functions changing a backbone gateways crc entry at the same time, lock it using a spinlock. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Tested-by: Alfons Name <AlfonsName@web.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-12-16batman-adv: rename equiv/equal or better to similar or betterSimon Wunderlich1-3/+3
Since the function applies a threshold and also slightly worse values are accepted, ''equal or better'' does not represent the intention of the function. ''Similar or better'' represents that better. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-12-16batman-adv: export single hop neighbor list via debugfsMarek Lindner1-0/+2
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-12-16batman-adv: add bat_hardif_neigh_init algo ops callMarek Lindner1-0/+2
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-12-16batman-adv: add list of unique single hop neighbors per hard-interfaceMarek Lindner1-0/+22
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-27batman-adv: remove obsolete deleted attribute for gateway nodeSimon Wunderlich1-2/+0
With rcu, the gateway node deleted attribute is not needed anymore. In fact, it may delay the free of the gateway node and its referenced structures. Therefore remove it altogether and simplify purging as well. Signed-off-by: Simon Wunderlich <simon@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-25batman-adv: convert bat_priv->tt.req_list to hlistMarek Lindner1-2/+2
Since the list's tail is never accessed using a double linked list head wastes memory. Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-25batman-adv: convert orig_node->vlan_list to hlistMarek Lindner1-2/+2
Since the list's tail is never accessed using a double linked list head wastes memory. Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-25batman-adv: Replace C99 int types with kernel typeSven Eckelmann1-53/+52
(s|u)(8|16|32|64) are the preferred types in the kernel. The use of the standard C99 types u?int(8|16|32|64)_t are objected by some people and even checkpatch now warns about using them. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-14batman-adv: Fix potential synchronization issues in mcast tvlv handlerLinus Lüssing1-0/+3
So far the mcast tvlv handler did not anticipate the processing of multiple incoming OGMs from the same originator at the same time. This can lead to various issues: * Broken refcounting: For instance two mcast handlers might both assume that an originator just got multicast capabilities and will together wrongly decrease mcast.num_disabled by two, potentially leading to an integer underflow. * Potential kernel panic on hlist_del_rcu(): Two mcast handlers might one after another try to do an hlist_del_rcu(&orig->mcast_want_all_*_node). The second one will cause memory corruption / crashes. (Reported by: Sven Eckelmann <sven@narfation.org>) Right in the beginning the code path makes assumptions about the current multicast related state of an originator and bases all updates on that. The easiest and least error prune way to fix the issues in this case is to serialize multiple mcast handler invocations with a spinlock. Fixes: 60432d756cf0 ("batman-adv: Announce new capability via multicast TVLV") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-14batman-adv: Make MCAST capability changes atomicLinus Lüssing1-1/+1
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One OGM handler might undo the set/clear of a specific bit from another handler run in between. Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions. Fixes: 60432d756cf0 ("batman-adv: Announce new capability via multicast TVLV") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-14batman-adv: Make TT capability changes atomicLinus Lüssing1-2/+2
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One OGM handler might undo the set/clear of a specific bit from another handler run in between. Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions. Fixes: e17931d1a61d ("batman-adv: introduce capability initialization bitfield") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-14batman-adv: Make NC capability changes atomicLinus Lüssing1-1/+1
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One OGM handler might undo the set/clear of a specific bit from another handler run in between. Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions. Fixes: 3f4841ffb336 ("batman-adv: tvlv - add network coding container") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-08-14batman-adv: Make DAT capability changes atomicLinus Lüssing1-2/+2
Bitwise OR/AND assignments in C aren't guaranteed to be atomic. One OGM handler might undo the set/clear of a specific bit from another handler run in between. Fix this by using the atomic set_bit()/clear_bit()/test_bit() functions. Fixes: 17cf0ea455f1 ("batman-adv: tvlv - add distributed arp table container") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
2015-06-07batman-adv: Add required includes to all filesSven Eckelmann1-2/+16
The header files could not be build indepdent from each other. This is happened because headers didn't include the files for things they've used. This was problematic because the success of a build depended on the knowledge about the right order of local includes. Also source files were not including everything they've used explicitly. Instead they required that transitive includes are always stable. This is problematic because some transitive includes are not obvious, depend on config settings and may not be stable in the future. The order for include blocks are: * primary headers (main.h and the *.h file of a *.c file) * global linux headers * required local headers * extra forward declarations for pointers in function/struct declarations The only exceptions are linux/bitops.h and linux/if_ether.h in packet.h. This header file is shared with userspace applications like batctl and must therefore build together with userspace applications. The header linux/bitops.h is not part of the uapi headers and linux/if_ether.h conflicts with the musl implementation of netinet/if_ether.h. The maintainers rejected the use of __KERNEL__ preprocessor checks and thus these two headers are only in main.h. All files using packet.h first have to include main.h to work correctly. Reported-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2015-06-07batman-adv: add bat_neigh_free APIAntonio Quartulli1-0/+4
This API has to be used to let any routing protocol free neighbor specific allocated resources Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2015-06-03batman-adv: types, Fix comment on bcast_ownMarkus Pargmann1-3/+4
batadv_orig_bat_iv->bcast_own is actually not a bitfield, it is an array. Adjust the comment accordingly. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
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