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Via the /sys filesystem you can change the gateway mode of a node using
gw_mode. Adjustments to it can be done using gw_bandwidth for server
mode and gw_sel_class for client mode.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
[sven.eckelmann@gmx.de: Rework on top of current version]
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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spin_lock_irqsave disables the IRQs and stores them inside the flags
provided by the caller. This is needed to protect a bottom half handler
or a user context critical section from being interrupted by an
interrupt handler which also tries to acquire the spinlock and locks
forever.
The linux device drivers will receive the packets inside an interrupt
handler and the network infrastructure will process them inside bottom
half. Thus batman-adv will only run in user context and bottom half
handlers. We can conclude that batman-adv doesn't share its own
spinlocks with real interrupt handlers.
This makes it possible to exchange the quite complex spin_lock_irqsave
with spin_lock_bh which only stops bottom halves from running on the
current cpu, but allows interrupt handlers to take over to keep the
interrupt latency low.
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The hash implementation is a complete implementation of a hash using
buckets as hash entries and overflow buckets attached to them.
The kernel already provides datastructures hlist_head and hlist_node
which can be used to implement an hash using lists as hash buckets. So
it is better to implement heavily used functionality on top of those
instead of providing a full hash implementation.
The rewrite changes the behavior of some functions slightly:
* hash_add add elements to the front instead of the tail
* hash_iterate doesn't provide pointer to access bucket->data directly,
but it can be accessed using hlist_entry
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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hash_iterate is next to the function pointers the most called function
related to hashes which benefits from inlining as it is uses in loops.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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To enable inlining of the function pointers hashdata_choose_cb,
hashdata_choose_cb and hashdata_free_cb, also the hash functions which
uses them must be inlined by the called function.
This should increase the performance, but also increases the size of the
generated machine code slightly.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Function pointers cannot be inlined by a compiler and thus always has
the overhead of an call. hashdata_choose_cb's are one of the most often
called function pointers and its overhead must kept relative low.
As first step, every function which uses this function pointer takes it
as parameter instead of storing it inside the hash abstraction
structure.
This not generate any performance gain right now. The called functions
must also be able to be inlined by the calling functions to enable
inlining of the function pointer.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Function pointers cannot be inlined by a compiler and thus always has
the overhead of an call. hashdata_compare_cb's are one of the most often
called function pointers and its overhead must kept relative low.
As first step, every function which uses this function pointer takes it
as parameter instead of storing it inside the hash abstraction
structure.
This not generate any performance gain right now. The called functions
must also be able to be inlined by the calling functions to enable
inlining of the function pointer.
Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When having a mixed topology of both very mobile and rather static
nodes, you are usually best advised to set the originator interval on
all nodes to a level best suited for the most mobile node.
However, if most of the nodes are rather static, this can create a lot
of undesired overhead as a trade-off then. If setting the interval too
low on the static nodes, a mobile node might be chosen as a router for
too long, not switching away from it fast enough because of its
mobility and the low frequency of ogms of static nodes.
Exposing the hop_penalty is especially useful for the stated scenario: A
static node can keep the default originator interval, a mobile node can
select a quicker one resulting in faster route updates towards this
mobile node. Additionally, such a mobile node could select a higher hop
penalty (or even set it to 255 to disable acting as a router for other
nodes) to make it less desirable, letting other nodes avoid selecting
this mobile node as a router.
Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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We actually do not need an extra struct device variable, therefore
replacing them with defines that directly get the bat_priv or
net_device. This further reduces the code size in bat_sysfs.c and
especially shortens some macros.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Sysfs configuration options that just took a boolean value
(enable(d)/disable(d)/0/1) and integer setting basically all had the same
structure.
To avoid even more copy and pasting in the future and to make introducing
new configuration parameters for batman-adv simpler, more generic
wrapper functions are being introduced with this commit. They can deal with
boolean and unsigned integer parameters, storing them in the specified
atomic_t variables.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Both sysfs entries and variable names shall be as descriptive as
possible while not exceeding a certain length. This patch renames
bat_priv atomics to be equally descriptive with their according sysfs
entries.
Unifying sysfs and bat_priv atomic names also makes it easier to find
each others pendant.
The reduced ("type"-)information which was previously indicated with a
_enabled for booleans got substituted by a comment in bat_priv.
This patch has also been done in regards for the future BAT_ATTR_*
macros (they only need one name argument instead of a file and variable
name).
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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By connecting multiple batman-adv mesh nodes to the same ethernet
segment a loop can be created when the soft-interface is bridged
into that ethernet segment. A simple visualization of the loop
involving the most common case - a LAN as ethernet segment:
node1 <-- LAN --> node2
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wifi <-- mesh --> wifi
Packets from the LAN (e.g. ARP broadcasts) will circle forever from
node1 or node2 over the mesh back into the LAN.
This patch adds the functionality to detect other batman-adv nodes
connected to the LAN and select a 'gateway' to talk to the
non-batman-adv devices on this LAN. All traffic from and to the mesh
will be handled by this gateway to avoid the loop. OGMs received via
the soft-interface are interpreted as 'port announcements' to locate
potential batman-adv nodes. The patch can also deal with vlans on
top of batX and offers a list of LAN neighbors via debugfs.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
[sven.eckelmann@gmx.de: Rework on top of current version]
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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If a packet is too big to be forwarded over an interface it will be
fragmented on-the-fly (if fragmentation is enabled).
Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Callers should check the if the received packet is for us before it
calls route_unicast_packet.
Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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dedicated function
Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The unicast_frag_send_skb() function expected 'raw' packets (without any
batman-adv header) to fragment them. This needs to be changed, so that
this function is able to fragment packets that already traveled inside
the mesh but need to be fragmented now.
Signed-off-by: Andreas Langer <an.langer@gmx.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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We call a lot of the netdevice code when holding if_list_lock which will
spin the whole time. This is not necessary because we only want to
protect the access to the list to be serialized. An extra queue can be
used which hold all interfaces which should be removed and then use that
queue without any locks for netdevice cleanup.
Reported-by: Rafal Lesniak <lesniak@eresi-project.org>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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eth_type_trans tries to pull data with the length of the ethernet header
from the skb. We only ensured that enough data for the first ethernet
header and the batman header is available in non-paged memory of the skb
and not for the ethernet after the batman header.
eth_type_trans would fail sometimes with drivers which don't ensure that
all there data is perfectly linearised.
Reported-by: Rafal Lesniak <lesniak@eresi-project.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Andrew Lunn didn't submit patches to staging since a while and may not
be the right person for new patches.
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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information structure
Remove unused sign member from chip specific information structure
Fix typos
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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converters
Initial support for single channel, 12-/14-/16-Bit nanoDAC with On-Chip Reference
staging: iio: dac: ad5446: Fix according to review feedback
Review feedback by Jonathan Cameron:
Use kernel doc style to document headers.
Turn data into a union
Add some comments for clarity
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Change to capital syntax for documetation e.g. 'inX-inY_raw'
Use multiple 'What:' entries rather than wild cards or options so
as to make the documentation clearer and easier to search.
Some trivial spelling fixes.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Unusual element is addition of 'negate' and 'axis' platform data
to ensure we support all the functionality of the adis16255 driver
currently in staging.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Matthias Brugger <mensch0815@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Enable support for AD7887: SPI Micropower, 2-Channel, 125 kSPS, 12-Bit ADC
staging: iio: adc: Fix according to review feedback
Review feedback by Jonathan Cameron:
Combine statements.
Document struct members.
Remove redundant variable initialization.
Simplify multichannel scan from ring logic.
Fix coding style.
[v2]
staging: iio: adc: ad7887: Fix typos
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Enable support for AD5444 and AD5446: 12-/14-Bit High Bandwidth
Multiplying DACs with Serial Interface.
staging: iio: dac: Add support for AD5541A, AD5512A digital to analog convertors
staging: iio: dac: Fix according to review feedback
Review feedback by Jonathan Cameron:
Remove spurious new line.
Document struct members.
Remove redundant variable initialization.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove duplicated #include('s) in
drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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scu ipc driver fails sometimes to read/write. This add logs with register
addr and ret code when these errors occur.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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To avoid mismatch in driver and firmware error codes assign specfic values
to each enum.
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The PCM interface in SST driver is cmds only, this patch changes the interface to open, close and cmd interface.
This allows SST driver to keep easy track of handles open
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This driver is for the Security Processor, a dedicated encryption
and decryption driver that is used on the Intel mobile platform.
This has been checked with checkpatch and there are four
warnings for lines over 80 charactors.
There is one compile warning. This is for a function that is
only used if the rar register driver is needed. There is an
ifdef in a header file that stubs out the rar register driver
if the rar register is not configured.
This driver does add a configuration, which is CONFIG_DX_SEP.
Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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clearpad_tm1217 driver uses many input_() interfaces, so it should
depend on INPUT.
clearpad_tm1217.c:(.text+0xf19ac): undefined reference to `input_unregister_device'
clearpad_tm1217.c:(.text+0xf1b19): undefined reference to `input_event'
clearpad_tm1217.c:(.text+0xf1b31): undefined reference to `input_event'
clearpad_tm1217.c:(.text+0xf1bb4): undefined reference to `input_event'
clearpad_tm1217.c:(.text+0xf1bf2): undefined reference to `input_event'
drivers/built-in.o:clearpad_tm1217.c:(.text+0xf1c08): more undefined references to `input_event' follow
clearpad_tm1217.c:(.text+0xf1df3): undefined reference to `input_allocate_device'
clearpad_tm1217.c:(.text+0xf1eac): undefined reference to `input_set_abs_params'
clearpad_tm1217.c:(.text+0xf1ed1): undefined reference to `input_set_abs_params'
clearpad_tm1217.c:(.text+0xf1ed8): undefined reference to `input_register_device'
clearpad_tm1217.c:(.text+0xf2040): undefined reference to `input_unregister_device'
clearpad_tm1217.c:(.text+0xf204b): undefined reference to `input_free_device'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Ramesh Agarwal <ramesh.agarwal@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fix following warning:
drivers/staging/ft1000/ft1000-usb/ft1000_usb.c:67:22:
warning: ‘pft1000info’ may be used uninitialized in this function
Signed-off-by: Marek Belisko <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Stick to the 80 character line limit at least for code
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove depreciated macro from header
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Align DAC sysfs attributes naming with the convention used by ADC
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Part of BMAC removal.
Signed-off-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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