Commit Graph

228 Commits

Author SHA1 Message Date
Sven Eckelmann bad5680b50 batman-adv: Add missing kerneldoc for extack
The parameter extack was added to batadv_softif_slave_add without adding
the kernel-doc for it. This caused kernel-doc warnings.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-10-12 11:49:36 +02:00
David S. Miller 4bc4e64c2c This cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
 
  - Cleanup patches to make checkpatch happy, by Sven Eckelmann (3 patches)
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE1ilQI7G+y+fdhnrfoSvjmEKSnqEFAlnXingWHHN3QHNpbW9u
 d3VuZGVybGljaC5kZQAKCRChK+OYQpKeoYfMEACRMbLTKj2qBRlvJJEZczEiViN3
 QgiatDtAFxI8VTgINqH2UzqFNd8Tg/4cvdrxpRgJsvIImyRvM0L40ZA+cjot6S/d
 j1q/DtCjC2qXcdt0GF5qo+5/mIcPTERp7r8vLD8tT6raq9E/D8lfPLXEc5XD/ZIq
 1m0WWLebDpmTWYduZYMhH7k8kdYSGXt84bkjT7RTs5C7gRRJFJcx/3wpfz9xO6K1
 +rnS6A+f5EqA9BA8lgDLsFY3NOAmCx/7DXnTMpWaD5ecpNI0qrtsYmEmw5pBOryK
 6UJ5AE4XYPTC1kpsGdKrf4lk2nz+k77CRkbec4O7zxYmLpJpqHz6HkWOgryHdf3Y
 lrhG/oR3XGa1gq0PaL4z0W7id1+Ur1ACNtikH5rIZff06Bgvh8RA3RrQMV42S0os
 fL35cjGTysxrHzyEJmy90g1AXRkZSBupZ1+/Owe9r0HoRJAJv/TfB1yBfjgXoL55
 HEJ3BAFLyEGMiQtWawVkGJw0oqgNLX13K89Va4ZLZodSCf4BZfXCoZnvCINauKTd
 daNzIRdvvHoMKj7rPl5VGXhRKtO8lxmz12b2CC0boInmwcKLZmVowbZcj3zkES95
 jZxXkRanXWEfXGC7aPA2N9rCPcakH2l928gnG3xcVBeXaPAg0zL4ZpxUuo76aP2A
 AgjVUeZL4LYojmaZfQ==
 =7hcv
 -----END PGP SIGNATURE-----

Merge tag 'batadv-next-for-davem-20171006' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - Cleanup patches to make checkpatch happy, by Sven Eckelmann (3 patches)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-06 10:12:52 -07:00
David Ahern 33eaf2a6eb net: Add extack to ndo_add_slave
Pass extack to do_set_master and down to ndo_add_slave

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-04 21:39:33 -07:00
Sven Eckelmann 48915aed60 batman-adv: Fix "line over 80 characters" checkpatch warning
Fixes: 242c1a28eb ("net: Remove useless function skb_header_release")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-28 17:20:45 +02:00
Sven Eckelmann 825ffe1f7b batman-adv: Remove unnecessary parentheses
checkpatch introduced with commit 63b7c73ec8 ("checkpatch: add --strict
check for ifs with unnecessary parentheses") an additional test which
identifies some unnecessary parentheses.

Remove these unnecessary parentheses to avoid the warnings and to unify the
coding style slightly more.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-28 17:20:45 +02:00
Gao Feng 242c1a28eb net: Remove useless function skb_header_release
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>
2017-09-22 20:43:13 -07:00
David S. Miller cf124db566 net: Fix inconsistent teardown and release of private netdev state.
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>
2017-06-07 15:53:24 -04:00
David S. Miller bd41486044 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
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE1ilQI7G+y+fdhnrfoSvjmEKSnqEFAljmSyUWHHN3QHNpbW9u
 d3VuZGVybGljaC5kZQAKCRChK+OYQpKeodYrD/4xzy0IGyF7vb/q3Nj0EeioldL8
 /8j9G14RfnlQaTIGxHEYz6oo1A6+cuH+t/4N+ilPFv6F0bBXG3GsWYrBCYLhVKwu
 2BQcoXC4ysdVqdrc7UDG5JY/t+n7JwhIcBw6kta9mt5fFVmPI/KHpefeaiUkdJb4
 23YkYsOSPVcD/Yv6+uiyfOG8FFxDrqFyn1uHpE1K5/05jLhJJ8S7nODNsitMOv2m
 EMLNJwTstSK/boPoxIpSCraxZGgpb0rt0K6HiBiNq0GyGRCtz0pxBpDOikVwTB62
 hy2aW3R59baGHPxA47oOAF60cJUlTj4pYxmsGwd9hzeJkw4eMvcYJzW6/2PXB3bj
 e4xBT5T+Y3bZDFdK+jW4hOCHLGC6gpwWSs5P6YDhCalhJ/meV75ef03ruIvGhVh9
 qOhuSMAnqCsoJ8FMpLT3GMkSGSkOXEhL8iF/r3/PR/q0cPCquQnMjQg+Kqp7+eb6
 iNHwSA0dqUiBB7KplS8KTcAxre8KlmNmGr544KY9eK0BZZ9BOleT2a2W7+QSTCKx
 o8fl44HmwhgxQ+mYJwG1kEfgmTRhvrOmr6KP9qTkn5lAoIGXspwBo/bA5+cyLJOU
 ewsx8JG5gfT2yUFB1HqdZon+rkW6KKopdHL+BL3BvQRYTUojxmr0lJBrMWg7GNYv
 2lwrasmHxhWbF2L4xg==
 =r99K
 -----END PGP SIGNATURE-----

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>
2017-04-06 14:37:50 -07:00
Tobias Klauser ab044f8e3e batman-adv: Use net_device_stats from struct net_device
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>
2017-04-05 15:41:24 +02:00
Sven Eckelmann 5405e19e70 batman-adv: Group ethtool related code together
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>
2017-04-03 12:58:29 +02:00
Sven Eckelmann e2790a4b27 batman-adv: Remove ethtool .get_settings stub
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>
2017-04-03 12:58:23 +02:00
Sven Eckelmann 40ad9842cb batman-adv: Remove ethtool msglevel functions
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>
2017-04-03 12:58:17 +02:00
Sven Eckelmann 2f249e99c7 batman-adv: Use ethtool helper to get link status
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>
2017-04-03 12:57:06 +02:00
Linus Lüssing e2d9ba4355 batman-adv: restructure rebroadcast counter into forw_packet API
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>
2017-03-26 12:46:44 +02:00
Tobias Klauser 13b0ea0f59 batman-adv: Omit unnecessary memset of netdev private data
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>
2017-03-17 12:53:35 +01:00
David S. Miller b124f41332 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
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE1ilQI7G+y+fdhnrfoSvjmEKSnqEFAljKiocWHHN3QHNpbW9u
 d3VuZGVybGljaC5kZQAKCRChK+OYQpKeoSYaD/4o3vSRQbiu95rzaPZbZ8cfFRYz
 FYS7b/SLV8Q8uxzCo05jimnYB9qGD8bZZlAPNhNZLqkSsTXc8vqfwPnyB9ytasrp
 A8jefoMlO0A5w3AQxBErzg3wrYr5Gz6lqkgqZTv06Sb6xa7F/OEo9pMjdbCBX15D
 G9y1FZdLZVhdVE8r9yUohbfcnZ4KkfBlViEXnjAcJoV2x4OOVGQjDdBGpaEQnwyk
 wyGEFuIO2oWW6AlQXCbXomTUZ6bAzJ43lPbRDWTVdrVJg2RV65F4MsNDfLpXVBQV
 GvmB33WVTzphQshxvhnjs2uWglnj8KGVcvpIp7GuRfGgpFJh9tbS2B0bITXCVxWU
 +HkNja6QwObwhEvAWfINaTT9RR1kxWAQk6YB9VEq3RJoHufP49felOZ877oAkK8T
 7CwazIe4rOhA+ISLUcUFk5W9B46DusPRyfhzrDZ6EM0P/ppGWpKAioawltLqX2P3
 kBmIW8kB6YRHnTeCHJZTjdPdQkYeIAYVunnhLvRrmTbf0oyVh3+UnwgAVquwJj/5
 WsEqNPsP0B++nsWmT+MPVOKj/JwcmtKfaDY2sor72aN6TZxq7MF9VGdcZiOu9neB
 zILNcb0oIvUahb2SO2u/gH2E/4am+ED5StQmNxHdJf1A+iCYGXEy/yETgeIm51/S
 TaHd1aH3VwmCR0sAKw==
 =zGdm
 -----END PGP SIGNATURE-----

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>
2017-03-16 12:05:38 -07:00
Sven Eckelmann 1a9070ec91 batman-adv: Initialize gw sel_class via batadv_algo
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>
2017-03-04 17:32:06 +01:00
David S. Miller 49b3eb7725 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)
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE1ilQI7G+y+fdhnrfoSvjmEKSnqEFAliKJcgWHHN3QHNpbW9u
 d3VuZGVybGljaC5kZQAKCRChK+OYQpKeoYzFEACGNOZcW2bFFpuE5CZWZpTW1n24
 YAY/3C+THc89oUyn7ZbWpZ05HcG+JZXOWCWHaRTnd4UeA+sbki53Ioo52ZGgo79C
 7LsyXMMH3F2NrXVEfCK/MUGZcqBAxMd4dcDPsYz5q5osxydjG3hEJLikqOluop3P
 JKK9FTEeP2JeoWz9eEf7Io2te6EwcIjo3TRa9f53uyyhPnk5eS2NeSle5axZqS7c
 l+NSZVlrrG7oUB0UdzABt5NWOvjDc+Lqp1dkoJo17PHOgXialIfjZOKUlKtjVx6E
 06ow2HZaEYCtdlb0awjyPxtIpwiy0szTzJa/h4XtzeQHgbOKIqJWAEb80X7imHVE
 aljP7A1uuGm0bcVQ+pq21PX8yLu4RCDPDE5Khu9atkiQP5+sVEdGiJ8Soaw4PmoD
 yhDmXshrPGR8u5txN8gaHWG4MHt19645s8dHqHQ7tf5h+mf2QXQ2v/jJQsCV2UfY
 vLd/JOD4ZVYWDCspcDdEwGc8KB9r6P31wXuSVjYfkqTFXocdzDr87V7C69CS0U+b
 Lzel8oa/eVa2ppR+OhpELxhL2ahO7p1jZI2ix4NHftx5MAV4WJ3RfR2ev2Sf9Ukc
 aGjzjuml3JVo2i+11lqiAtOaBK9wDNv1CaC+D2NmC6wpWzWQryNryw3fm2SoH3Xm
 S+UoBDZpik+SIEBv3Q==
 =cd1Y
 -----END PGP SIGNATURE-----

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>
2017-01-26 14:31:08 -05:00
Sven Eckelmann ac79cbb96b batman-adv: update copyright years for 2017
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-01-26 08:34:19 +01:00
Simon Wunderlich d3e9768ab9 batman-adv: don't add loop detect macs to TT
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>
2017-01-26 08:34:18 +01:00
Tobias Klauser 4a7c972644 net: Remove usage of net_device last_rx member
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>
2017-01-18 17:22:49 -05:00
Sven Eckelmann eaac2c876e batman-adv: Count all non-success TX packets as dropped
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>
2016-10-30 11:11:36 +01:00
Sven Eckelmann bd687fe419 batman-adv: use consume_skb for non-dropped packets
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>
2016-10-30 11:11:36 +01:00
Linus Lüssing 3111beed0d batman-adv: Simple (re)broadcast avoidance
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>
2016-10-30 11:11:35 +01:00
Sven Eckelmann c408c1b9d4 batman-adv: Move batadv_sum_counter to soft-interface.c
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>
2016-10-17 16:28:46 +02:00
Sven Eckelmann df28ca6bb3 batman-adv: Place kref_get for softif_vlan near use
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>
2016-08-09 07:54:50 +02:00
Sven Eckelmann f19dc7770f batman-adv: Remove orig_node reference handling from send_skb_unicast
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>
2016-08-09 07:54:33 +02:00
Sven Eckelmann 569c98504b batman-adv: Revert "postpone sysfs removal when unregistering"
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>
2016-08-09 07:54:27 +02:00
David S. Miller b77af26a79 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)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCgAGBQJXel3cAAoJEKEr45hCkp6hxs0P/jQZBJ37Bd4EHRGdhvCJWwsO
 j79zr7mIECub8a6PMkO1GI87ksJNtRdRw7XAIbLKTwsKEsUE0Gpv/MLLKgv/nD7X
 zatcoI4DujkgSojZIcOV/061+M9FAnCtAYv13jIS8nbXdqfGPxPfLua6Zbvx1GS2
 z/Rqg/WbB2qDtDlUrp0W/8oXQ+k6062G7GigroPLmjdWd5lF0H6ly4loWsxFyr0U
 GVl44HM4nOj7DwkVlrGoOXnAbjpz9TNC/aA5TIS/tLFZkm5dvJjjKLDbxo5NM9aq
 hRhFy8Gbe0TmOxV3mKZUT1oHuaHgFDY2tADLiLF2g/ijgaTetXCBJ6DXQ7BkiZnh
 +t1fnutOB1D05+cZGDmlfb2bFXO6vdDwNzKYuPdeW0tUOVwzNIaMK+US1HffUD3F
 ciK/cALsLbfJ3QkUHJclE57baMuB2c7YWJUxGdp2r4lKHak6tc8+BsornI6lB6qY
 kcxip6EEaT7edjT66Qjq8GtFK7WIri5nHI9n5Js+Wwl1QENvkLmZRQ6qZexwSplS
 RTZmmO+i+Y4rGDa3xoVSlC+CEUO7D4VwhET2Jir7KJrVS+pFNRAmfpUNWxeauAls
 D1xWgBrWjjOYu5i3LjwC6cHl4eTWxBwWmBUaxLUUeyoR22ulIs6bXCQMWOLMbupd
 q8k2B5BW9waTAgb4Tam9
 =PFHu
 -----END PGP SIGNATURE-----

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>
2016-07-04 23:33:59 -07:00
Antonio Quartulli 33a3bb4a33 batman-adv: throughput meter implementation
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>
2016-07-04 12:37:18 +02:00
David S. Miller 3ea00443f1 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
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCgAGBQJXdmhpAAoJEKEr45hCkp6h/R0P/1K0mZjs1lk15j1oc0EeE/lJ
 a47nwLQiAj9O790SUhQuonUYtbw5jhxZq5P1zYvg44ngRdUhsH9yiwr+Yado40CW
 5ek+EdfGfkwNThGG++knVrbhLPrGxSC9Q2qJCApergt4wViWvvovSJOZsKVcanei
 Qv9uGn6TIhZW3FFhvYk6/xgseZhjRISgxPkO1N20tMcC3f0w4YgM5QcCPGG2KB3N
 CYq1qryyl4Jf6NeNap/lXiTo6JA5qOHYe68ziotJTtlsrsYQ3WitJvuKO+bWuQIv
 zOU/jQ7qUwuabLT5TnzZKxQJvhrqfA5V20OM3yD4lnhdgvqVsHgHoIRy6RpN4U8M
 rFlgROZvm+k0ATnL8AcUtIY7EA/EA0ifHN2fdTAfQ0XNc0VxTXEWB4qTTBJu3+se
 N0+QyIjpXzgHqKxjIpr8Sm3tBO/ANCui/gWl5SToGXis3xDsRivvTMWNSNYjgDcP
 WdyLtx9h7RLNOh64Idwsq4yDHt+/P86z7xJQdlkmrshkjqL/HNgS93U5CeAC3mN0
 S6N5PgZG07EYnGxzxDid+6x1UP1VA7dyqHJpxpYY7qbw+/aDVlq5XH/vI/9Lbq5i
 vu/54L8cVG5nBe54SZBeUib5W7Wkgf3POWzt+rrRwbHY+gAE1zUPQNNzgDtLHH0N
 K/XJwdcoGQzA5LEynGE7
 =js/J
 -----END PGP SIGNATURE-----

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>
2016-07-01 17:05:00 -04:00
Linus Lüssing 72f7b2deaf batman-adv: Adding logging of mcast flag changes
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>
2016-06-30 10:29:43 +02:00
Sven Eckelmann 01d350d147 batman-adv: move bat_algo functions into a separate file
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>
2016-06-30 10:29:43 +02:00
Antonio Quartulli 3a24a63e74 batman-adv: move GW mode and selection class to private data structure
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>
2016-06-30 10:29:43 +02:00
Sven Eckelmann 420cb1b764 batman-adv: Clean up untagged vlan when destroying via rtnl-link
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>
2016-06-29 04:01:48 -04:00
Marek Lindner 9d1601ef43 batman-adv: replace ethertype variable with ETH_P_BATMAN for readability
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Reviewed-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-05-10 18:28:54 +08:00
Sven Eckelmann 4b426b108a batman-adv: Use bool as return type for boolean functions
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>
2016-05-10 18:28:54 +08:00
Andrew Lunn 2cd45a0671 batman-adv: Create batman soft interfaces within correct netns.
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>
2016-05-10 18:26:44 +08:00
Andrew Lunn 0d21cdaa9b batman-adv: NETIF_F_NETNS_LOCAL feature to prevent netns moves
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>
2016-05-10 18:26:44 +08:00
Sven Eckelmann 7142fc1072 batman-adv: Remove hdr_size skb size check in batadv_interface_rx
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>
2016-05-10 18:26:43 +08:00
Sven Eckelmann 6535db56d5 batman-adv: Remove unused parameter recv_if of batadv_interface_rx
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-05-10 18:26:43 +08:00
David S. Miller 5332174a83 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
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJXKRJdAAoJEJ4aZjxxc6bKSVEP/1Ky6O7+oanpsjjwUiZDMj0W
 KPtoPQ/VsJxu51e0OYi78jHtGned7xV+FLyFx1k8BwLPThYtd8ysDVqMqFAmXsRh
 JPOT+7Y+lf8/FBUYdKyJcsaoqAeRPXnY+p0vE7woLaxk+GOiWpOIip73nisgu9gy
 NxfmgJ77WjEV2v6IiD4djfYmZqOOvCF6IGWkubtc0WZdg5ma/2u7vYEDBy3yjN/b
 og/5joT3GZC8K6X8BabxNSLDER+qs489a6rOUGoRK4NCU3LhELAywuAws30nPrB/
 vFJ6BvEEzkaGcXJViSFelb9zsi4ngwvY9OPQnFCmOicDzJN7jqdV6yXcnSLurph1
 sDR+1+k1f63czCJpG8Uhj+8SaQO7P8T9A5nL1UKwhdCOENCuj8Vtp5y4S2A3bOSe
 jEv1dy9FC3yaPvtkyUN+wOuDerPoJr5pFuVRz2RGyeFSMxs+RPBLYf/D0+x1om9A
 Vz63ecsygk7S7qGNXHUbQvX5Q5Kv5f4y4XjvmrH3rBq+T/WC6V5vbkTo8L4CapX9
 KNffNGl1RWqHz/TVLSrQmlHc9zNM/Rg0am2MIxplGfP0rQSUNob/qjD50KPJSLF/
 M8tmOBSCNAxzlfAwcn+VJLq+xt6Mr2mkhwZZPYGQPno8JJqCMq52k4w1AQvbv+eI
 sxgFGvTq1WACUDx03vyx
 =qoV3
 -----END PGP SIGNATURE-----

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>
2016-05-04 16:21:08 -04:00
Florian Westphal 860e9538a9 treewide: replace dev->trans_start update with helper
Replace all trans_start updates with netif_trans_update helper.
change was done via spatch:

struct net_device *d;
@@
- d->trans_start = jiffies
+ netif_trans_update(d)

Compile tested only.

Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: linux-xtensa@linux-xtensa.org
Cc: linux1394-devel@lists.sourceforge.net
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: MPT-FusionLinux.pdl@broadcom.com
Cc: linux-scsi@vger.kernel.org
Cc: linux-can@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-hams@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-wireless@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: devel@driverdev.osuosl.org
Cc: b.a.t.m.a.n@lists.open-mesh.org
Cc: linux-bluetooth@vger.kernel.org
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-04 14:16:49 -04:00
Sven Eckelmann f298cb94d6 batman-adv: Add kernel-doc for batadv_interface_rx
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-05-04 02:22:03 +08:00
Antonio Quartulli 6d030de89f batman-adv: fix wrong names in kerneldoc
Signed-off-by: Antonio Quartulli <a@unstable.cc>
[sven@narfation.org: Fix additional names]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
2016-05-04 02:22:03 +08:00
Sven Eckelmann c78296665c batman-adv: Check skb size before using encapsulated ETH+VLAN header
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>
2016-04-24 15:37:21 +08:00
Sven Eckelmann 9c3bf08189 batman-adv: Rename batadv_softif_vlan *_free_ref function to *_put
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>
2016-02-23 13:49:10 +08:00
Sven Eckelmann 82047ad7fe batman-adv: Rename batadv_hardif *_free_ref function to *_put
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>
2016-02-23 13:48:24 +08:00
Sven Eckelmann 6be4d30c18 batman-adv: Convert batadv_softif_vlan to kref
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>
2016-02-10 23:23:59 +08:00
Sven Eckelmann 0046b0402a batman-adv: update copyright years for 2016
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>
2016-02-02 12:55:10 +08:00