There is no one which would invokes the function skb_header_release.
So just remove it now.
Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Network devices can allocate reasources and private memory using
netdev_ops->ndo_init(). However, the release of these resources
can occur in one of two different places.
Either netdev_ops->ndo_uninit() or netdev->destructor().
The decision of which operation frees the resources depends upon
whether it is necessary for all netdev refs to be released before it
is safe to perform the freeing.
netdev_ops->ndo_uninit() presumably can occur right after the
NETDEV_UNREGISTER notifier completes and the unicast and multicast
address lists are flushed.
netdev->destructor(), on the other hand, does not run until the
netdev references all go away.
Further complicating the situation is that netdev->destructor()
almost universally does also a free_netdev().
This creates a problem for the logic in register_netdevice().
Because all callers of register_netdevice() manage the freeing
of the netdev, and invoke free_netdev(dev) if register_netdevice()
fails.
If netdev_ops->ndo_init() succeeds, but something else fails inside
of register_netdevice(), it does call ndo_ops->ndo_uninit(). But
it is not able to invoke netdev->destructor().
This is because netdev->destructor() will do a free_netdev() and
then the caller of register_netdevice() will do the same.
However, this means that the resources that would normally be released
by netdev->destructor() will not be.
Over the years drivers have added local hacks to deal with this, by
invoking their destructor parts by hand when register_netdevice()
fails.
Many drivers do not try to deal with this, and instead we have leaks.
Let's close this hole by formalizing the distinction between what
private things need to be freed up by netdev->destructor() and whether
the driver needs unregister_netdevice() to perform the free_netdev().
netdev->priv_destructor() performs all actions to free up the private
resources that used to be freed by netdev->destructor(), except for
free_netdev().
netdev->needs_free_netdev is a boolean that indicates whether
free_netdev() should be done at the end of unregister_netdevice().
Now, register_netdevice() can sanely release all resources after
ndo_ops->ndo_init() succeeds, by invoking both ndo_ops->ndo_uninit()
and netdev->priv_destructor().
And at the end of unregister_netdevice(), we invoke
netdev->priv_destructor() and optionally call free_netdev().
Signed-off-by: David S. Miller <davem@davemloft.net>
- bump version strings, by Simon Wunderlich
- Code and Style cleanups, by Sven Eckelmann (5 patches)
- Remove an unneccessary memset, by Tobias Klauser
- DAT and BLA optimizations for various corner cases, by Andreas Pape
(5 patches)
- forward/rebroadcast packet restructuring, by Linus Luessing
(2 patches)
- ethtool cleanup and remove unncessary code, by Sven Eckelmann
(4 patches)
- use net_device_stats from net_device instead of private copy,
by Tobias Klauser
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Merge tag 'batadv-next-for-davem-20170406' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature/cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
- Code and Style cleanups, by Sven Eckelmann (5 patches)
- Remove an unneccessary memset, by Tobias Klauser
- DAT and BLA optimizations for various corner cases, by Andreas Pape
(5 patches)
- forward/rebroadcast packet restructuring, by Linus Luessing
(2 patches)
- ethtool cleanup and remove unncessary code, by Sven Eckelmann
(4 patches)
- use net_device_stats from net_device instead of private copy,
by Tobias Klauser
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of using a private copy of struct net_device_stats in struct
batadv_priv, use stats from struct net_device.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The ethtool code was spread in soft-interface.c. This makes reading the
code and working on it unnecessary complicated. Having everything in a
common place next to the other code which references it, makes it slightly
easier.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The .get_settings function pointer and the related API was deprecated.
Fortunately, batman-adv is a virtual interface and never provided any
useful information via .get_settings. The stub can therefore be
removed.
This also avoids that incorrect information is shown in ethtool about the
batadv interface.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
batadv devices don't support msglevel. The ethtool stubs therefore returned
that it isn't supported. But instead, the complete function can be dropped
to avoid that bogus values are shown in ethtool.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The ethtool_ops of batman-adv never contained more than a stub for the
get_link function pointer. It was always returning that a link exists even
when the devices was not yet up and therefore nothing resampling a link
could have been available.
Instead use the ethtool helper which returns the current carrier state.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This patch refactors the num_packets counter of a forw_packet in the
following three ways:
1) Removed dual-use of forw_packet::num_packets:
-> now for aggregation purposes only
2) Using forw_packet::skb::cb::num_bcasts instead:
-> for easier access in aggregation code later
3) make access to num_bcasts private to batadv_forw_packet_*()
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
[sven@narfation.org: Change num_bcasts to unsigned]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The memory for netdev_priv is allocated using kzalloc in alloc_netdev
(or alloc_netdev_mq respectively) so there is no need to set it to 0
again.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
- Keep fragments equally sized, avoids some problems with too small fragments,
by Sven Eckelmann
- Initialize gateway class correctly when BATMAN V is compiled in,
by Sven Eckelmann
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Merge tag 'batadv-net-for-davem-20170316' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
Here are two batman-adv bugfixes:
- Keep fragments equally sized, avoids some problems with too small fragments,
by Sven Eckelmann
- Initialize gateway class correctly when BATMAN V is compiled in,
by Sven Eckelmann
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The gateway selection class variable is shared between different algorithm
versions. But the interpretation of the content is algorithm specific. The
initialization is therefore also algorithm specific.
But this was implemented incorrectly and the initialization for BATMAN_V
always overwrote the value previously written for BATMAN_IV. This could
only be avoided when BATMAN_V was disabled during compile time.
Using a special batadv_algo hook for this initialization avoids this
problem.
Fixes: 50164d8f50 ("batman-adv: B.A.T.M.A.N. V - implement GW selection logic")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
- bump version strings, by Simon Wunderlich
- ignore self-generated loop detect MAC addresses in translation table,
by Simon Wunderlich
- install uapi batman_adv.h header, by Sven Eckelmann
- bump copyright years, by Sven Eckelmann
- Remove an unused variable in translation table code, by Sven Eckelmann
- Handle NET_XMIT_CN like NET_XMIT_SUCCESS (revised according to Davids
suggestion), and a follow up code clean up, by Gao Feng (2 patches)
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Merge tag 'batadv-next-for-davem-20170126' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature/cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
- ignore self-generated loop detect MAC addresses in translation table,
by Simon Wunderlich
- install uapi batman_adv.h header, by Sven Eckelmann
- bump copyright years, by Sven Eckelmann
- Remove an unused variable in translation table code, by Sven Eckelmann
- Handle NET_XMIT_CN like NET_XMIT_SUCCESS (revised according to Davids
suggestion), and a follow up code clean up, by Gao Feng (2 patches)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The bridge loop avoidance (BLA) feature of batman-adv sends packets to
probe for Mesh/LAN packet loops. Those packets are not sent by real
clients and should therefore not be added to the translation table (TT).
Signed-off-by: Simon Wunderlich <simon.wunderlich@open-mesh.com>
The network stack no longer uses the last_rx member of struct net_device
since the bonding driver switched to use its own private last_rx in
commit 9f24273837 ("bonding: use last_arp_rx in slave_last_rx()").
However, some drivers still (ab)use the field for their own purposes and
some driver just update it without actually using it.
Previously, there was an accompanying comment for the last_rx member
added in commit 4dc89133f4 ("net: add a comment on netdev->last_rx")
which asked drivers not to update is, unless really needed. However,
this commend was removed in commit f8ff080dac ("bonding: remove
useless updating of slave->dev->last_rx"), so some drivers added later
on still did update last_rx.
Remove all usage of last_rx and switch three drivers (sky2, atp and
smc91c92_cs) which actually read and write it to use their own private
copy in netdev_priv.
Compile-tested with allyesconfig and allmodconfig on x86 and arm.
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Mirko Lindner <mlindner@marvell.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A failure during the submission also causes dropped packets.
batadv_interface_tx should therefore also increase the DROPPED counter for
these returns.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
kfree_skb assumes that an skb is dropped after an failure and notes that.
consume_skb should be used in non-failure situations. Such information is
important for dropmonitor netlink which tells how many packets were dropped
and where this drop happened.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
With this patch, (re)broadcasting on a specific interfaces is avoided:
* No neighbor: There is no need to broadcast on an interface if there
is no node behind it.
* Single neighbor is source: If there is just one neighbor on an
interface and if this neighbor is the one we actually got this
broadcast packet from, then we do not need to echo it back.
* Single neighbor is originator: If there is just one neighbor on
an interface and if this neighbor is the originator of this
broadcast packet, then we do not need to echo it back.
Goodies for BATMAN V:
("Upgrade your BATMAN IV network to V now to get these for free!")
Thanks to the split of OGMv1 into two packet types, OGMv2 and ELP
that is, we can now apply the same optimizations stated above to OGMv2
packets, too.
Furthermore, with BATMAN V, rebroadcasts can be reduced in certain
multi interface cases, too, where BATMAN IV cannot. This is thanks to
the removal of the "secondary interface originator" concept in BATMAN V.
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>
The function batadv_sum_counter is only used in soft-interface.c and has no
special relevance for main.h.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
It is hard to understand why the refcnt is increased when it isn't done
near the actual place the new reference is used. So using kref_get right
before the place which requires the reference and in the same function
helps to avoid accidental problems caused by incorrect reference counting.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The function batadv_send_skb_unicast is not acquiring a reference for an
orig_node nor removing it from any datastructure. It still reduces the
reference counter for an object which is still in the hands of the caller.
This is confusing and can lead in the future to problems in the reference
handling of the caller function.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Postponing the removal of the interface breaks the expected behavior of
NETDEV_UNREGISTER and NETDEV_PRE_TYPE_CHANGE. This is especially
problematic when an interface is removed and added in quick succession.
This reverts commit 5bc44dc845 ("batman-adv: postpone sysfs removal when
unregistering").
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
- Cleanup work by Markus Pargmann and Sven Eckelmann (six patches)
- Initial Netlink support by Matthias Schiffer (two patches)
- Throughput Meter implementation by Antonio Quartulli, a kernel-space
traffic generator to estimate link speeds. This feature is useful on
low-end WiFi APs where running iperf or netperf from userspace
gives wrong results due to heavy userspace/kernelspace overhead.
(two patches)
- API clean-up work by Antonio Quartulli (one patch)
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Merge tag 'batadv-next-for-davem-20160704' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature patchset includes the following changes:
- Cleanup work by Markus Pargmann and Sven Eckelmann (six patches)
- Initial Netlink support by Matthias Schiffer (two patches)
- Throughput Meter implementation by Antonio Quartulli, a kernel-space
traffic generator to estimate link speeds. This feature is useful on
low-end WiFi APs where running iperf or netperf from userspace
gives wrong results due to heavy userspace/kernelspace overhead.
(two patches)
- API clean-up work by Antonio Quartulli (one patch)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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>
- two patches with minimal clean up work by Antonio Quartulli and
Simon Wunderlich
- eight patches of B.A.T.M.A.N. V, API and documentation clean
up work, by Antonio Quartulli and Marek Lindner
- Andrew Lunn fixed the skb priority adoption when forwarding
fragmented packets (two patches)
- Multicast optimization support is now enabled for bridges which
comes with some protocol updates, by Linus Luessing
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Merge tag 'batadv-next-for-davem-20160701' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature patchset includes the following changes:
- two patches with minimal clean up work by Antonio Quartulli and
Simon Wunderlich
- eight patches of B.A.T.M.A.N. V, API and documentation clean
up work, by Antonio Quartulli and Marek Lindner
- Andrew Lunn fixed the skb priority adoption when forwarding
fragmented packets (two patches)
- Multicast optimization support is now enabled for bridges which
comes with some protocol updates, by Linus Luessing
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
With this patch changes relevant to a node's own multicast flags are
printed to the 'mcast' log level.
Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The bat_algo functionality in main.c is mostly unrelated to the rest of the
content. It still takes up a large portion of this source file (~15%, 103
lines). Moving it to a separate file makes it better visible as a main
component of the batman-adv implementation and hides it less in the other
helper functions in main.c.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
To reduce the field pollution in our main batadv_priv data structure
we've already created some substructures so that we could group fields
in a convenient manner.
However gw_mode and gw_sel_class are still part of the main object.
More both fields to the GW private substructure.
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
The untagged vlan object is only destroyed when the interface is removed
via the legacy sysfs interface. But it also has to be destroyed when the
standard rtnl-link interface is used.
Fixes: 5d2c05b213 ("batman-adv: add per VLAN interface attribute framework")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Reviewed-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
It is easier to understand that the returned value of a specific function
doesn't have to be 0 when the functions was successful when the actual
return type is bool. This is especially true when all surrounding functions
with return type int use negative values to return the error code.
Reported-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
When creating a soft interface, create it in the same netns as the
hard interface. Replace all references to init_net with the correct
name space for the interface being manipulated.
Suggested-by: Daniel Ehlers <danielehlers@mindeye.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The batX soft interface should not be moved between network name
spaces. This is similar to bridges, bonds, tunnels, which are not
allowed to move between network namespaces.
Suggested-by: Daniel Ehlers <danielehlers@mindeye.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Antonio Quartulli <a@unstable.cc>
Reviewed-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The callers of batadv_interface_rx have to make sure that enough data can
be pulled from the skb when they read the batman-adv header. The only two
functions using it are either calling pskb_may_pull with hdr_size directly
(batadv_recv_bcast_packet) or indirectly via batadv_check_unicast_packet
(batadv_recv_unicast_packet).
Reported-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
- two changes to the MAINTAINERS file where one marks our mailing list
as moderated and the other adds a missing documentation file
- kernel-doc fixes
- code refactoring and various cleanups
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Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
Antonio Quartulli says:
====================
pull request: batman-adv 20160504
In this pull request you have:
- two changes to the MAINTAINERS file where one marks our mailing list
as moderated and the other adds a missing documentation file
- kernel-doc fixes
- code refactoring and various cleanups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The encapsulated ethernet and VLAN header may be outside the received
ethernet frame. Thus the skb buffer size has to be checked before it can be
parsed to find out if it encapsulates another batman-adv packet.
Fixes: 420193573f ("batman-adv: softif bridge loop avoidance")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The batman-adv source code is the only place in the kernel which uses the
*_free_ref naming scheme for the *_put functions. Changing it to *_put
makes it more consistent and makes it easier to understand the connection
to the *_get functions.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The batman-adv source code is the only place in the kernel which uses the
*_free_ref naming scheme for the *_put functions. Changing it to *_put
makes it more consistent and makes it easier to understand the connection
to the *_get functions.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
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>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
The maximum of hard_header_len and maximum of all needed_(head|tail)room of
all slave interfaces of a batman-adv device must be used to define the
batman-adv device needed_(head|tail)room. This is required to avoid too
small buffer problems when these slave devices try to send the encapsulated
packet in a tx path without the possibility to resize the skbuff.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
(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>
Gao Feng