- 17 12月, 2010 1 次提交
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由 Sven Eckelmann 提交于
B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: NSven Eckelmann <sven@narfation.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 10 11月, 2010 1 次提交
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由 Chris Lang 提交于
55d1666b521cbed95924c8d4775fe272c103f08c incidentally disabled bonding of packets first entering the mesh along with also disabling interface alternating regardless of where the packet came from. This re-enables these options. Signed-off-by: NChris Lang <clang@gateworks.com> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 21 10月, 2010 1 次提交
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由 Andy Shevchenko 提交于
Since all *printf() methods in the kernel understand '%pM' modifier the conversion to the string is useless beforehand. Additionally this patch decreases batman_if structure by 20 bytes. Signed-off-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Cc: Marek Lindner <lindner_marek@yahoo.de> Cc: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Cc: Andrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 21 9月, 2010 1 次提交
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由 Sven Eckelmann 提交于
receive_bat_packet is not called with rcu_read_lock so we must ensure by ourself that we protect list_for_each_entry_rcu using the correct RCU locks. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 15 9月, 2010 1 次提交
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由 Vasiliy Kulikov 提交于
kmalloc() may fail, if so drop current packet. Signed-off-by: NVasiliy Kulikov <segooon@gmail.com> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Removed new introduced deadlock] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 05 9月, 2010 7 次提交
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由 Sven Eckelmann 提交于
Information about dropped packets are usually only interesting for debugging purposes and otherwise open the possibility to flood the logs of the target machine with useless information. pr_debug will not output those information on a nodebug kernel. Reported-by: NVasiliy Kulikov <segooon@gmail.com> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
batman_if has the name of the net_dev as extra string in its own structure, but also holds a reference to the actual net_device structure which always has the current name of the device. This makes it unneccessary and also more complex because we must update the name in situations when we receive a NETDEV_CHANGENAME event. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
This patch removes all remaining global variables and includes the necessary bits into the bat_priv structure. It is the last remaining piece to allow multiple concurrent mesh clouds on the same device. A few global variables have been rendered obsolete during the process and have been removed entirely. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
This patch replaces the static bat0 interface with a dynamic/abstracted approach. It is now possible to create multiple batX interfaces by assigning hard interfaces to them. Each batX interface acts as an independent mesh network. A soft interface is removed once no hard interface references it any longer. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
We must ensure that all interesting data is linear and not paged out to access all information in a header or a full batman-adv related packet. Otherwise we may drop packets which have non-linear headers but which hold valid data. This doesn't affect non-linear skbs which have all headers in a linear head unless we must process the whole packet like in ogms or vis packets. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
We can use skb_cow instead of a handwritten function to test and create a writable skb buffer. This also allows us to pre-allocate headroom to be able to send the data without re-allocating the buffer again to add the ethernet header. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Andreas Langer 提交于
This patch implements a simple layer2 fragmentation to allow traffic exchange over network interfaces with a MTU smaller than 1500 bytes. The fragmentation splits the big packets into two parts and marks the frames accordingly. The receiving end buffers the packets to reassemble the orignal packet before passing it to the higher layers. This feature makes it necessary to modify the batman-adv encapsulation for unicast packets by adding a sequence number, flags and the originator address. This modifcation is part of a seperate packet type for fragemented packets to keep the original overhead as low as possible. This patch enables the feature by default to ensure the data traffic can travel through the network. But it also prints a warning to notify the user about the performance implications. Note: Fragmentation should be avoided at all costs since it has a dramatic impact on the performance, especially when it comes wifi networks. Instead of a single packet, 2 packets have to be sent! Not only valuable airtime is wasted but also packetloss decreases the throughput. A link with 50% packetloss and fragmentation enabled is pretty much unusable. Signed-off-by: NAndreas Langer <an.langer@gmx.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 24 8月, 2010 1 次提交
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由 Marek Lindner 提交于
When receiving an batman icmp echo request or in case of a time-to-live exceeded batman would reply with the mac address of the outgoing interface which might be a secondary interface. Because secondary interfaces are not globally known this might lead to confusion. Now, replies are sent with the mac address of the primary interface. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 09 7月, 2010 3 次提交
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由 Sven Eckelmann 提交于
Each general printk which is not informative by itself for a specific batX device were moved to pr_(info|warning|err) as it provides an easy interface which for example resolves the problem to add the prefix "batman-adv: " before each line. All information which is specific to a batX device will be printed using a bat_(info|err|warning) macro to prefix it also with "batman-adv: batX:" in each line. Reported-by: NJoe Perches <joe@perches.com> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
All routing debug messages are saved in a ring buffer that can be read via the debugfs file "log". Note that CONFIG_BATMAN_ADV_DEBUG must be activated to have the debug logs compiled in. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Antonio Quartulli 提交于
Useless but meaningfull patch that converts JavaStyle names into c_style Signed-off-by: NAntonio Quartulli <ordex@ritirata.org> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 23 6月, 2010 6 次提交
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由 Daniel Seither 提交于
The standard layer 3 ping utility can use the record route (RR) option of IP to collect route data for sent ping messages (ping -R). This patch introduces comparable functionality for batman-adv ICMP messages. The patch adds a second batman ICMP packet format (icmp_packet_rr) such that up to 17 MAC addresses can be recorded (sufficient for up to 8 hops per direction). When no RR is wanted, the old icmp_packet without the RR overhead can be sent. Signed-off-by: NDaniel Seither <post@tiwoc.de> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
This patch adds interface alternating to the new bonding feature. By default, we now try to avoid forwarding packets on the receiving interface, instead choosing alternative interfaces. This feature works only on nodes which have multiple interfaces connected to the mesh. This approach should reduce problems of the half-duplex nature of WiFi Hardware and thus increase performance. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Acked-by: NMarek Lindner <lindner_marek@yahoo.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
This patch introduces bonding functionality to batman-advanced, targeted for the 0.3 release. As we are able to route the payload traffic as we want, we may use multiple interfaces on multihomed hosts to transfer data to achieve higher bandwidth. This can be considered as "light Multi Path Routing" for single hop connections. To detect which interfaces of a peer node belong to the same host, a new flag PRIMARIES_FIRST_HOP is introduced. This flag is set on the first hop of OGMs of the primary (first) interface, which is broadcasted on all interfaces. When receiving such an OGM, we can learn which interfaces belong to the same host (by assigning them to the primary originator). Bonding works by sending packets in a round-robin fashion to the available interfaces of a neighbor host, if multiple interfaces are available. The neighbor interfaces should be almost equally good to reach. To avoid interferences (i.e. sending on the same channel), only neighbor interfaces with different mac addresses and different outgoing interfaces are considered as candidates. Bonding is deactivated by default, and can be activated by echo 1 > /sys/class/net/bat0/mesh/bonding for each individual node. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
This patch changes the sequence number range from 8 or 16 bit to 32 bit. This should avoid problems with the sequence number sliding window algorithm which we had seen in the past for broadcast floods or malicious packet injections. We can not assure 100% security with this patch, but it is quite an improvement over the old 16 bit sequence numbers: * expected window size can be increased (4096 -> 65536) * 64k packets in the right order would now be needed to cause a loop, which seems practically impossible. Furthermore, a TTL field has been added to the broadcast packet type, just to make sure. These changes required to increase the compatibility level once again. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> [sven.eckelmann@gmx.de: Change atomic64_* back to atomic_*, Rework on top of current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
Functions and variables which are used only inside one object file can be declared as static. This helped to find unused functions/variables * mainIfAddr_default * main_if_was_up and functions with declarations but missing definitions * hash_debug * orig_find * send_own_packet_work Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
batctl uses /dev/batman-adv to send special batman-adv icmp packets to other nodes in the mesh. To get it working with multiple batX devices we must ensure that every mesh device can have their own socket which is used to inject those packets in exactly one mesh. The current implementation still doesn't allow to use complete separated meshes as we rely on structures which are not part of the private data of a batman device. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 12 5月, 2010 9 次提交
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由 Sven Eckelmann 提交于
Documentation/CodingStyle sets a strongly prefered limit of 80 characters per line in "Chapter 2: Breaking long lines and strings". Strings must be broken into smaller parts and long statements must be rewritten. Reported-by: NMikal Sande <mikal.sande@gmail.com> Reported-by: NMark Rankilor <reodge@gmail.com> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
We must ensure that all pointer to a socket buffer are updated when we copy a socket buffer and free our reference to the old one. Another part of the kernel could also free its reference which maybe removes the buffer completely. In that situation we would would feed wrong information to the routing algorithm after the memory area is written again by someone else. Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
BATMAN and broadcast packets are tracked with a sequence number window of currently 64 entries to measure and avoid duplicates. Packets which have a sequence number smaller than the newest received packet minus 64 are not within this sequence number window anymore and are called "old packets" from now on. When old packets are received, the routing code assumes that the host of the originator has been restarted. This assumption however might be wrong as packets can also be delayed by NIC drivers, e.g. because of long queues or collision detection in dense WiFi? environments. This behaviour can be reproduced by doing a broadcast ping flood in a dense node environment. The effect is that the sequence number window is jumping forth and back, accepting and forwarding any packet (because packets are assumed to be "new") and causing loops. To overcome this problem, the sequence number handling has been reorganized. When an old packet is received, the window is reset back only once. Other old packets are dropped for (currently) 30 seconds to "protect" the new sequence number and avoid the hopping as described above. The reorganization brings some code cleanups (at least i hope you feel the same) and also fixes a bug in count_real_packets() which falsely updated the last_real_seqno for slightly older packets within the seqno window if they are no duplicates. This second version of the patch also fixes a problem where for seq_diff==64 bit_shift() reads from outside of the seqno window, and removes the loop for seq_diff == -64 which was present in the first patch. The third iteration also adds a window for the next expected sequence numbers. This minimizes sequence number flapping for packets with very big differences (e.g. 3 packets with seqno 0, 25000 and 50000 might still cause problems without this window). Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
Instead of having a single /proc file "interfaces" in which you have to echo the wanted interface batman-adv will create a subfolder in each suitable /sys/class/net folder. This subfolder contains files for the interface specific settings. For example, mesh_iface to add/remove an interface from a virtual mesh network (at the moment only bat0 is supported). Example: echo bat0 > /sys/class/net/eth0/batman-adv/mesh_iface to deactivate: echo none > /sys/class/net/eth0/batman-adv/mesh_iface Interfaces which are not compatible with batman-adv won't contain the batman-adv folder, therefore can't be activated. Not supported are: loopback, non-ethernet, non-ARP and virtual mesh network interfaces Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
converted files: vis_mode, vis_data Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Luis de Bethencourt 提交于
This patch fixes the 31 unnecessary whitespaces before a quoted newline that the batman-adv files had. Signed-off-by: NLuis de Bethencourt <luisbg@ubuntu.com> [sven.eckelmann@gmx.de: Redone to apply against current version] Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Sven Eckelmann 提交于
"tcpdump" and "batctl td" will receive packets with a wrong sequence number on systems with a different endianess than network byte order. This happens due to the reordering of bytes in the function which handles aggregated bat packets. The function which receives the bat packets must ensure that these buffers aren't shared with anything else before that function tries to write into it. Otherwise it has to copy the buffers so it is save again to change them. Reported-by: NKevin Steen <batman@kevinsteen.net> Signed-off-by: NSven Eckelmann <sven.eckelmann@gmx.de> Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 04 3月, 2010 9 次提交
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由 Andrew Lunn 提交于
The vis code takes a copy of the data inside the skbuf if it is interesting for us, so we always need to release the skbuf. Reported-by: NLinus Luessing <linus.luessing@web.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
This patch removes a variable that became obsolete since the skb handling replaced the packet handling thread. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Marek Lindner 提交于
The routing code has 2 sections which warn about ttl exceeded. The corresponding warnings were identical which makes it hard to debug. In addition, batman-adv does not need to warn about ttl exceeded in case we encountered an echo request as this is commonly used to generate traceroute graphs. Signed-off-by: NMarek Lindner <lindner_marek@yahoo.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
Since we are now part of mainline, we don't need compat.h to allow building of the module with old versions of the kernel. Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Andrew Lunn 提交于
printk() since kernel version 2.6.29 has supported printing MAC addresses directly, as an extension to the %p processing. This patch makes use of this for printk() and bat_dbg(). This will remove the overhead of using addr_to_string() which is normally never actually output. Fixed a typo found by Gus Wirth. Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
This patch removes the (ugly and racy) packet receiving thread and the kernel socket usage. Instead, packets are received directly by registering the ethernet type and handling skbs instead of self-allocated buffers. Some consequences and comments: * we don't copy the payload data when forwarding/sending/receiving data anymore. This should boost performance. * packets from/to different interfaces can be (theoretically) processed simultaneously. Only the big originator hash lock might be in the way. * no more polling or sleeping/wakeup/scheduling issues when receiving packets * this might introduce new race conditions. * aggregation and vis code still use packet buffers and are not (yet) converted. * all spinlocks were converted to irqsave/restore versions to solve some lifelock issues when preempted. This might be overkill, some of these locks might be reverted later. * skb copies are only done if neccesary to avoid overhead performance differences: * we made some "benchmarks" with intel laptops. * bandwidth on Gigabit Ethernet increased from ~500 MBit/s to ~920 MBit/s * ping latency decresed from ~2ms to ~0.2 ms I did some tests on my 9 node qemu environment and could confirm that usual sending/receiving, forwarding, vis, batctl ping etc works. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Acked-by: NSven Eckelmann <sven.eckelmann@gmx.de> Acked-by: NMarek Lindner <lindner_marek@yahoo.de> Acked-by: NLinus Lüssing <linus.luessing@web.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
there are some kmallocs left which are not checked whether they succeeds or not, which might lead to corrupted data structures if the system memory is full. This patch should clean up the remaining unchecked kmalloc()s. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
we have written "neighbors", "neighbours" and bad spelled versions of this word, this patch should make it consistent. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Simon Wunderlich 提交于
instead of dynamically registering hash iterators, calling functions are changed to register the iterator objects statically. The two advantages are: * no memory leaks when aborting from hash_iterate() * no calls to kmalloc/kfree, therefore a little faster/safer Tested with 9 QEMU instances, no obvious regression found. Signed-off-by: NSimon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: NAndrew Lunn <andrew@lunn.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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