linux-toradex.git/net/batman-adv, branch v3.13-rc2

batman-adv: generalize batman-adv icmp packet handling

2013-10-23T15:03:47+00:00

Instead of handling icmp packets only up to length of icmp_packet_rr,
the code should handle any icmp length size. Therefore the length
truncating is moved to when the packet is actually sent to userspace
(this does not support lengths longer than icmp_packet_rr yet). Longer
packets are forwarded without truncating.

This patch also cleans up some parts where the icmp header struct could
be used instead of other icmp_packet(_rr) structs to make the code more
readable.

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

batman-adv: Start new development cycle

2013-10-23T15:03:46+00:00

Signed-off-by: Simon Wunderlich 
Signed-off-by: Antonio Quartulli

batman-adv: include the sync-flags when compute the global/local table CRC

2013-10-23T15:03:46+00:00

Flags covered by TT_SYNC_MASK are kept in sync among the
nodes in the network and therefore they have to be
considered while computing the global/local table CRC.

In this way a generic originator is able to understand if
its table contains the correct flags or not.

Bits from 4 to 7 in the TT flags fields are now reserved for
"synchronized" flags only.

This allows future developers to add more flags of this type
without breaking compatibility.

It's important to note that not all the remote TT flags are
synchronised. This comes from the fact that some flags are
used to inject an information once only.

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

batman-adv: improve the TT component to support runtime flag changes

2013-10-23T15:03:45+00:00

Some flags (i.e. the WIFI flag) may change after that the
related client has already been announced. However it is
useful to informa the rest of the network about this change.

Add a runtime-flag-switch detection mechanism and
re-announce the related TT entry to advertise the new flag
value.

This mechanism can be easily exploited by future flags that
may need the same treatment.

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

batman-adv: invoke dev_get_by_index() outside of is_wifi_iface()

2013-10-23T15:03:44+00:00

Upcoming changes need to perform other checks on the
incoming net_device struct.

To avoid performing dev_get_by_index() for each and every
check, it is better to move it outside of is_wifi_iface()
and search the netdev object once only.

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

batman-adv: send GW_DEL event in case of soft-iface destruction

2013-10-23T15:03:44+00:00

In case of soft_iface destruction send a GW DEL event to
userspace so that applications which are listening for GW
events are informed about the lost of connectivity and can
react accordingly.

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

batman-adv: limit local translation table max size

2013-10-23T15:03:43+00:00

The local translation table size is limited by what can be
transferred from one node to another via a full table request.

The number of entries fitting into a full table request depend
on whether the fragmentation is enabled or not. Therefore this
patch introduces a max table size check and refuses to add
more local clients when that size is reached. Moreover, if the
max full table packet size changes (MTU change or fragmentation
is disabled) the local table is downsized instantaneously.

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

batman-adv: adapt the TT component to use the new API functions

2013-10-23T15:03:42+00:00

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

batman-adv: provide orig_node routing API

2013-10-23T15:03:21+00:00

Some operations executed on an orig_node depends on the
current routing algorithm being used. To easily make this
mechanism routing algorithm agnostic add a orig_node
specific API that each algorithm can populate with its own
routines.

Such routines are then invoked by the code when needed,
without knowing which routing algorithm is currently in use

With this patch 3 API functions are added:
- orig_free (to free routing depending internal structs)
- orig_add_if (to change the inner state of an orig_node
  when a new hard interface is added)
- orig_del_if (to change the inner state of an orig_node
  when an hard interface is removed)

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

batman-adv: adapt the neighbor purging routine to use the new API functions

2013-10-23T13:33:12+00:00

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