Marcel Holtmann [Thu, 8 Oct 2015 00:24:06 +0000 (02:24 +0200)]
Bluetooth: bpa10x: Read revision information in setup stage
For debugging pruposes, read the revision string of the BPA-10x devices
and print it. For example one of the latest devices respond with the
string SNIF_102,BB930,02/01/18,10:37:56.
Marcel Holtmann [Wed, 7 Oct 2015 23:53:55 +0000 (01:53 +0200)]
Bluetooth: Fix interaction of HCI_QUIRK_RESET_ON_CLOSE and HCI_AUTO_OFF
When the controller requires the HCI Reset command to be send when
closing the transport, the HCI_AUTO_OFF needs to be accounted for. The
current code tries to actually do that, but the flag gets cleared to
early. So store its value and use it that stored value instead of
checking for a flag that is always cleared.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 7 Oct 2015 18:08:26 +0000 (20:08 +0200)]
Bluetooth: hci_bcm: Enable support for set_diag driver callback
The set_diag driver callback allows enabling and disabling the vendor
specific diagnostic information. Since Broadcom chips have support for
a dedicated LM_DIAG channel, hook it up accordingly.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 7 Oct 2015 17:52:35 +0000 (19:52 +0200)]
Bluetooth: Add debugfs entry for setting vendor diagnostic mode
This adds a new debugfs entry for enabling and disabling the vendor
diagnostic mode. It is only exposed for drivers that provide the
set_diag driver callback and actually have an option for vendor
specific diagnostic information.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 7 Oct 2015 17:12:54 +0000 (19:12 +0200)]
Bluetooth: hci_bcm: Enable parsing of LM_DIAG messages
The Broadcom UART based controllers can send LM_DIAG messages with the
identifier 0x07 inside the HCI stream. These messages are 63 octets in
size and have no variable payload or length indicator.
This patch adds correct parsing information for the h4_recv_buf handler
and in case these packets are received, they are forwarded to the
Bluetooth core via hci_recv_diag interface.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 7 Oct 2015 14:38:35 +0000 (16:38 +0200)]
Bluetooth: Add support for vendor specific diagnostic channel
Introduce hci_recv_diag function for HCI drivers to allow sending vendor
specific diagnostic messages into the Bluetooth core stack. The messages
are not processed, but they are forwarded to the monitor channel and can
be retrieved by user space diagnostic tools.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Wed, 7 Oct 2015 13:32:13 +0000 (15:32 +0200)]
Bluetooth: Send index information updates to monitor channel
The Bluetooth public device address might change during controller setup
and it makes it a lot simpler for monitoring tools if they just get told
what the new address is. In addition include the manufacturer / company
information of the controller. That allows for easy vendor specific HCI
command and event handling.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Mon, 5 Oct 2015 10:43:57 +0000 (12:43 +0200)]
Bluetooth: btbcm: Read the local name in setup stage
The Broadcom Bluetooth controllers have the chip name included in the
ROM firmware or later in the patchram firmware. For debugging purposes
read the local name and print it out. This is only done during setup
stage and only once before loading the firmware and once after loading
the firmware.
For the Broadcom based controllers from Apple, the name is only read once
after determining the chip id.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 4 Oct 2015 21:34:03 +0000 (23:34 +0200)]
Bluetooth: Send transport open and close monitor events
When the core starts or shuts down the actual HCI transport, send a new
monitor event that indicates that this is happening. These new events
correspond to HCI_DEV_OPEN and HCI_DEV_CLOSE events.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 4 Oct 2015 21:34:02 +0000 (23:34 +0200)]
Bluetooth: Move handling of HCI_RUNNING flag into core
Setting and clearing of HCI_RUNNING flag in each and every driver is
just duplicating the same code all over the place. So instead of having
the driver do it in their hdev->open and hdev->close callbacks, set it
globally in the core transport handling.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sun, 4 Oct 2015 21:34:01 +0000 (23:34 +0200)]
Bluetooth: Move HCI_RUNNING check into hci_send_frame
In all callbacks for hdev->send the status of HCI_RUNNING is checked. So
instead of repeating that code in every driver, move the check into the
hci_send_frame function before calling hdev->send.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Sat, 3 Oct 2015 10:01:08 +0000 (12:01 +0200)]
Bluetooth: btbcm: Send HCI Reset before sending Apple specific commands
The commit 7bee8b08c428 allows the Read Verbose Config Info to fail
gracefully and not cause the controller setup to abort. It seems the
reason that command failed in the first place was the missing HCI Reset
to bring the controller in full Bluetooth mode.
Apple Bluetooth controllers start out in HID mode and when in that mode
the Read Verbose Config Info command is not allowed. Sending HCI Reset
switches the controller into full HCI mode.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Loic Poulain [Thu, 1 Oct 2015 16:16:21 +0000 (18:16 +0200)]
Bluetooth: btintel: Add iBT register access over HCI support
Add regmap ibt to support Intel Bluetooth silicon register access
over HCI. Intel BT/FM combo chip allows to read/write some registers
(e.g. FM registers) via its HCI interface.
Read/Write operations are performed via a HCI transaction composed of
a HCI command (host->controller) followed by a HCI command complete
event (controller->host). Read/Write Command opcodes can be specified
to the regmap init function.
We define data formats which are intel/vendor specific.
Dan Carpenter [Fri, 2 Oct 2015 07:47:29 +0000 (10:47 +0300)]
nl802154: Missing return in nl802154_add_llsec_key()
There was a missing return here so it meant that often
ieee802154_llsec_parse_key_id() was not called.
Fixes: a26c5fd7622d ('nl802154: add support for security layer') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The reason is that I forgot the IPv6 fragmentation here. Our MTU of
lowpan interface is 1280 and skb->len should not above of that. If we
reach a payload above 1280 in IPv6 header then we have a IPv6
fragmentation above 802.15.4 6LoWPAN fragmentation. The type "u16" was
fine, instead I added now a WARN_ON_ONCE if skb->len is above MTU which
should never happen otherwise IPv6 on minimum MTU size is broken.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Jarkko Nikula [Wed, 30 Sep 2015 13:26:45 +0000 (16:26 +0300)]
Bluetooth: hci_bcm: Do not test ACPI companion in bcm_acpi_probe()
This device has always ACPI companion because driver supports only ACPI
enumeration. Therefore there is no need to test it in bcm_acpi_probe() and
we can pass it directly to acpi_dev_get_resources() (which will return
-EINVAL in case of NULL argument is passed).
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Jarkko Nikula [Wed, 30 Sep 2015 13:26:44 +0000 (16:26 +0300)]
Bluetooth: hci_bcm: Remove needless looking code
Tree wide grep for "hci_bcm" doesn't reveal there is any code registering
this platform device and "struct acpi_device_id" use for passing the
platform data looks a debug/test code leftover to me.
I'm assuming this driver effectively supports only ACPI enumeration and
thus test for ACPI_HANDLE() and platform data can be removed.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
There is no need to call acpi_match_device() in driver's probe path and
verify does it find a match to given ACPI _HIDs in .acpi_match_table as
driver/platform/acpi core code has found the match prior calling the probe.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Caller of acpi_dev_get_resources() should free the constructed resource
list by calling the acpi_dev_free_resource_list() in order to avoid memory
leak.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Jarkko Nikula [Wed, 30 Sep 2015 13:28:52 +0000 (16:28 +0300)]
Bluetooth: hci_intel: Cleanup the device probe code
There is some unneeded code in "hci_intel" probing. First
acpi_match_device() call is needless as driver/platform/acpi core code has
already done the matching before calling the probe and the driver does not
use the returned pointer to matching _HID other than checking is it NULL.
Then tree wide grep for "hci_intel" doesn't reveal that there is any code
registering this platform device so it looks this device is always backed
with ACPI companion so also ACPI_HANDLE() test can be removed.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Wed, 30 Sep 2015 08:20:11 +0000 (10:20 +0200)]
ieee802154: 6lowpan: add tx/rx stats
This patch adds support for increment transmit and receive stats. The
meaning of these stats are IPv6 based, which shows the stats after
running the 6lowpan adaptation layer (uncompression/compression,
fragmentation handling) on receive and before the adaptation layer
when transmit.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Wed, 30 Sep 2015 08:20:10 +0000 (10:20 +0200)]
ieee802154: 6lowpan: don't skip first dsn while fragmentation
This patch fixes the data frame sequence numer (dsn) while 6lowpan
fragmentation for frag1. Currently we create one 802.15.4 header at
first, then check if it's match into one frame and at the end construct
many fragments and calling wpan_dev_hard_header for each of them,
inclusive for the first fragment. This will make the first generated
header to garbage, instead we copying this header for frag1 instead of
generate a new one which skips one dsn.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Wed, 30 Sep 2015 08:20:09 +0000 (10:20 +0200)]
ieee802154: 6lowpan: change datagram var types
This patch changes datagram size variable from u16 type to unsigned int.
The reason is that an IPv6 header has an MAX_UIN16 payload length, but
the datagram size is payload + IPv6 header length. This avoids overflows
at some places.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 28 Sep 2015 17:59:48 +0000 (19:59 +0200)]
mac802154: check on len instead mac_len
This patch change the length check to len instead of mac_len for
checking if the frame control field is available to dereference.
We need to change it because I saw issues with af_packet raw sockets
and the mrf24j40 which calls this functionality. The raw socket
functionality doesn't set the mac_len but resets the skb_mac_header to
skb->data which is still correct. The issue occur at mrf24j40 only,
because the driver need to evaluate the fc fields.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 28 Sep 2015 10:36:26 +0000 (12:36 +0200)]
ieee802154: change mtu size behaviour
This patch changes the mtu size of 802.15.4 interfaces. The current
setting is the meaning of the maximum transport unit with mac header,
which is 127 bytes according 802.15.4. The linux meaning of the mtu size
field is the maximum payload of a mac frame. Like in ethernet, which is
1500 bytes.
We have dynamic length of mac frames in 802.15.4, this is why we assume
the minimum header length which is hard_header_len. This contains fc and
sequence fields. These can evaluated by driver layer without additional
checks. We currently don't support to set the FCS from userspace, so we
need to subtract this from mtu size as well.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 28 Sep 2015 07:00:26 +0000 (09:00 +0200)]
mac802154: add comments for llsec issues
While doing a little test with the llsec implementation I saw these
issues. We should move decryption and encruption somewhere else,
otherwise while capturing with wireshark the mac header shows secuirty
fields but the payload is plaintext.
A complete other issue is what doing with HardMAC drivers where the
payload is always plaintext. I think we need a special handling then in
userspace. We currently doesn't support any HardMAC transceivers, so we
should fix the first issue for SoftMAC transceivers.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 28 Sep 2015 07:00:25 +0000 (09:00 +0200)]
nl802154: add support for security layer
This patch adds support for accessing mac802154 llsec implementation
over nl802154. I added for a new Kconfig entry to provide this
functionality CONFIG_IEEE802154_NL802154_EXPERIMENTAL. This interface is
still in development. It provides to change security parameters and
add/del/dump entries of security tables. Later we can add also a get to
get an entry by unique identifier.
Alexander Aring [Mon, 28 Sep 2015 07:00:23 +0000 (09:00 +0200)]
netlink: add nla_get for le32 and le64
This patch adds missing inline wrappers for nla_get_le32 and
nla_get_le64. The 802.15.4 MAC byteorder is little endian and we keep
the byteorder for fields like address configuration in the same
byteorder as it comes from the MAC layer.
To provide these fields for nl802154 userspace applications, we need
these inline wrappers for netlink.
Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Thu, 24 Sep 2015 07:37:11 +0000 (09:37 +0200)]
mac802154: iface: assume big endian for af_packet
The callback "create" and "parse" from header_ops are called from
netdev core upper-layer functionality, like af_packet. These callbacks
assumes big endian for addresses and we should not introduce a special
byteordering handling for ieee802154 over af_packet in userspace.
We have an identical issue with setting the mac address which also
assumes big endian byteordering.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Thu, 24 Sep 2015 07:37:10 +0000 (09:37 +0200)]
ieee802154: remove unnecessary includes
This patch removes some unnecessary includes from ieee802154 header,
which was introduced by commit b609fb54adfa ("ieee802154: add helpers for
frame control checks").
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Adds autosuspend runtime functionality to BCM UART driver.
Autosuspend is enabled at end of bcm_setup.
bcm_device_lock is used for system sleep functions as they can be
called at any time.
bcm_device_lock is not held for runtime suspend functions as this
is only enabled as long as platform device is opened.
rx_lock spinlock is only used in hci_uart_tty_receive() which is the
receive_buf ldisc callback.
hci_uart_tty_receive() is protected from re-entrance by its only
caller (flush_to_ldisc() in drivers/tty/tty_buffer.c) which held a
mutex (buf->lock) for this section.
This lock allows "safe use of the line discipline's receive_buf()
method by excluding the buffer work and any pending flush from using
the flip buffer." (comments from tty_buffer_lock_exclusive() in
drivers/tty/tty_buffer.c)
So, no need to double protect this resource with rx_lock.
Alexander Aring [Mon, 21 Sep 2015 09:24:42 +0000 (11:24 +0200)]
mrf24j40: change irq trigger type behaviour
This patch changes the irq trigger type value while calling
devm_request_irq by using IRQF_TRIGGER_LOW when no irq type was given.
Additional we add support for change the irq polarity while hw init if
high level or low level triggered irq type are given.
For rising edge triggered irq's the mrf24j40 can't deal with that, this
races at position of tx completion irq, while the irq is disabled we
readout the irq status registers. This will resets the irq line so other
irq's can occur. Wile readout the irq status register the irq is still
disabled and edge triggered interrupts will be ignored.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:41 +0000 (11:24 +0200)]
mrf24j40: add promiscuous mode support
This patch adds support for promiscuous mode by setting promiscuous (no
frame filtering), disable automatic ack handling and not filtering
frames where the crc is invalid.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:40 +0000 (11:24 +0200)]
mrf24j40: add tx power support
This patch supports setting of transmit power for the mrf24j40ma
transceiver only. The mrf24j40mc has some amplifier to change the
transmit power, I am currently not sure how the mapping for this
amplifier looks like.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:37 +0000 (11:24 +0200)]
mrf24j40: add csma params support
This patch adds supports to change the CSMA parameters. The datasheet
doesn't say anything about max_be value. Seems not configurable and we
assume the 802.15.4 default. But this value must exists because there is
a min_be value.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:36 +0000 (11:24 +0200)]
mrf24j40: async interrupt handling
This patch removes the threaded irq handling and do a hardirq instead.
We need to switch to spi_async for this step for getting the irq status
register.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:35 +0000 (11:24 +0200)]
mrf24j40: rework rx handling to async rx handling
This patch prepares that we can do the receive handling inside interrupt
context by using spi_async. This is necessary for introduce a
non-threaded irq handling.
Also we drop the bit setting for "RXDECINV" at register "BBREG1", we do
a driectly full write of register "BBREG1", because it contains the bit
RXDECINV only.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:34 +0000 (11:24 +0200)]
mrf24j40: rework tx handling to async tx handling
This patch reworks the current transmit API to spi_async handling. We
removed the error handling check, because mac802154 has no chance to
report it. Also the transmit timeout handling can't be handled by xmit
async handling, for this usecase we need to implement the netdev
watchdog. These are all unlikely cases which we drop now and should be
provided by netdev watchdog.
We also drop the bit setting for TXNACKREQ at register TXNCON, this is
not necessary. The TXNCON register should set only once for each frame,
previous settings doesn't matter.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:33 +0000 (11:24 +0200)]
ieee802154: add helpers for frame control checks
This patch introduce two static inline functions. The first to get the
frame control field from an sk_buff. The second is for checking on the
acknowledgment request bit on the frame control field. Later we can
introduce more functions to check on the frame control fields.
These will deprecate the current behaviour which requires a
host-byteorder conversion and manually bit handling.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:31 +0000 (11:24 +0200)]
mrf24j40: use regmap for register access
This patch uses the regmap functions for transceiver register settings
where it's possible. This means everything except the hotpaths like
receive/transmit handling.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:30 +0000 (11:24 +0200)]
mrf24j40: add regmap support
This patch introduce regmap support for short and long address space of
mrf24j40. It's only possible to use regmap_read/write/update_bits for
long address range. This is because I added lowlevel bus operation
because the write operation need to set the 12th bit to mark a register
write, but regmap only supports to set bits for register write access in
the first byte. We use other regmap register functions than
read/write/update_bits, so this should be fine.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:25 +0000 (11:24 +0200)]
mrf24j40: remove spi settings overwrite
This patch removes spi settings while mrf24j40 probing. These settings
cannot be overwrite while device probing where spi controller should be
already configured. These settings need to be setup by device tree or
platform data.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:24 +0000 (11:24 +0200)]
mrf24j40: calling ieee802154_register_hw at last
The function ieee802154_register_hw should always called at last.
Currently we do hardware init and such things after register hardware
into the subsystem. It could be that the subsystem already call driver
operations while running hardware init.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 09:24:23 +0000 (11:24 +0200)]
mrf24j40: use ieee802154_alloc_hw for private data
This patch removes the own private dataroom allocation by calling
devm_kzalloc for devrec and assign this pointer to "devrec->hw->priv".
Instead we using like all other drivers ieee802154_alloc_hw and give the
size for the private driver dataroom at the first argument.
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 21 Sep 2015 07:37:54 +0000 (09:37 +0200)]
at86rf230: support edge triggered irq
This patch adds support for edge triggered irq types. We remove the
locking for irq resources by enable/disable irq and allocate directly
some heap buffer at isr. We have still a enable/disable irq path but
this is for level-triggered irq's which need to be disabled until
spi_async clear the irq line.
There is usually a little race condition between "irq line cleared" and
"enable_irq". When in this time a edge triggered irq arrived, we will
not recognize this interrupt. This case can't happend at at86rf230. The
reason is that we unmask TRX_END irq's only which indicates a transmit
or receive completion, which depends on the current state.
On Transmit:
TRX_END arrived and transceiver is in TX_ARET_ON state again, in this
state no other TRX_END can happen until we leave the state.
On Receive:
This is protected with the RX_SAFE_MODE bit which leaves the transceiver
in RX_AACK_BUSY until we readed the framebuffer. In this state no other
TRX_END can happen.
Tested with RPi where I first detected issues between edge/level irq's.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 18 Sep 2015 09:30:44 +0000 (11:30 +0200)]
mac802154: tx: add warning if MTU exceeds
Sending over AF_PACKET RAW sockets we can sending frames which exceeds
MTU size. To handling it correct we need to change things in AF_PACKET
which knows on RAW sockets an additional FCS is set by hardware or
mac802154 transmit functionality.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 18 Sep 2015 09:30:43 +0000 (11:30 +0200)]
ieee802154: change needed headroom/tailroom
This patch cleanups needed_headroom, needed_tailroom and hard_header_len
fields for wpan and lowpan interfaces.
For wpan interfaces the worst case mac header len should be part of
needed_headroom, currently this is set as hard_header_len, but
hard_header_len should be set to the minimum header length which xmit
call assumes and this is the minimum frame length of 802.15.4.
The hard_header_len value will check inside send callbacl of AF_PACKET
raw sockets.
For lowpan interfaces, if fragmentation isn't needed the skb will
call dev_hard_header for 802154 layer and queue it afterwards. This
happens without new skb allocation, so we need the same headroom and
tailroom lengths like 802154 inside 802154 6lowpan layer. At least we
assume as minimum header length an ipv6 header size.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 18 Sep 2015 09:30:42 +0000 (11:30 +0200)]
ieee802154: introduce wpan_dev_header_ops
The current header_ops callback structure of net device are used mostly
from 802.15.4 upper-layers. Because this callback structure is a very
generic one, which is also used by e.g. DGRAM AF_PACKET sockets, we
can't make this callback structure 802.15.4 specific which is currently
is.
I saw the smallest "constraint" for calling this callback with
dev_hard_header/dev_parse_header by AF_PACKET which assign a 8 byte
array for address void pointers. Currently 802.15.4 specific protocols
like af802154 and 6LoWPAN will assign the "struct ieee802154_addr" as
these parameters which is greater than 8 bytes. The current callback
implementation for header_ops.create assumes always a complete
"struct ieee802154_addr" which AF_PACKET can't never handled and is
greater than 8 bytes.
For that reason we introduce now a "generic" create/parse header_ops
callback which allows handling with intra-pan extended addresses only.
This allows a small use-case with AF_PACKET to send "somehow" a valid
dataframe over DGRAM.
To keeping the current dev_hard_header behaviour we introduce a similar
callback structure "wpan_dev_header_ops" which contains 802.15.4 specific
upper-layer header creation functionality, which can be called by
wpan_dev_hard_header.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 18 Sep 2015 09:30:41 +0000 (11:30 +0200)]
ieee802154: header_ops: fix frame control setting
Sometimes upper-layer protocols wants to generate a new mac header by
filling "struct ieee802154_hdr" only. These upper-layers sets for the
address settings the source and dest fields, but not the fc fields for
indicate the source and dest address mode. This patch changes the
"ieee802154_hdr_push" function so the fc address fields are set
according the source and dest fields of "struct ieee802154_hdr".
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Stephen Rothwell [Tue, 22 Sep 2015 03:41:44 +0000 (20:41 -0700)]
drivers/net/ieee802154/at86rf230.c: seq_printf() now returns NULL
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Alexander Aring <alex.aring@gmail.com> Cc: Stefan Schmidt <stefan@osg.samsung.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: bcmgenet: Remove duplicate test for tx_coalesce_usecs_high
We were checking twice for ec->tx_coalesce_usecs_high, remove the
duplicate test.
Reported-by: Julia Lawall <julia.lawall@lip6.fr> Reported-by: kbuild-all@01.org Fixes: 2f9130709d2c19 ("net: bcmgenet: Implement TX coalescing control knobs") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch makes TLP to use 1 sec timer by default when RTT is
not available due to SYN/ACK retransmission or SYN cookies.
Prior to this change, the lack of RTT prevents TLP so the first
data packets sent can only be recovered by fast recovery or RTO.
If the fast recovery fails to trigger the RTO is 3 second when
SYN/ACK is retransmitted. With this patch we can trigger fast
recovery in 1sec instead.
Note that we need to check Fast Open more properly. A Fast Open
connection could be (accepted then) closed before it receives
the final ACK of 3WHS so the state is FIN_WAIT_1. Without the
new check, TLP will retransmit FIN instead of SYN/ACK.
Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Nandita Dukkipati <nanditad@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Currently SYN/ACK RTT is measured in jiffies. For LAN the SYN/ACK
RTT is often measured as 0ms or sometimes 1ms, which would affect
RTT estimation and min RTT samping used by some congestion control.
This patch improves SYN/ACK RTT to be usec resolution if platform
supports it. While the timestamping of SYN/ACK is done in request
sock, the RTT measurement is carefully arranged to avoid storing
another u64 timestamp in tcp_sock.
For regular handshake w/o SYNACK retransmission, the RTT is sampled
right after the child socket is created and right before the request
sock is released (tcp_check_req() in tcp_minisocks.c)
For Fast Open the child socket is already created when SYN/ACK was
sent, the RTT is sampled in tcp_rcv_state_process() after processing
the final ACK an right before the request socket is released.
If the SYN/ACK was retransmistted or SYN-cookie was used, we rely
on TCP timestamps to measure the RTT. The sample is taken at the
same place in tcp_rcv_state_process() after the timestamp values
are validated in tcp_validate_incoming(). Note that we do not store
TS echo value in request_sock for SYN-cookies, because the value
is already stored in tp->rx_opt used by tcp_ack_update_rtt().
One side benefit is that the RTT measurement now happens before
initializing congestion control (of the passive side). Therefore
the congestion control can use the SYN/ACK RTT.
Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 21 Sep 2015 23:03:05 +0000 (16:03 -0700)]
Merge branch 's390-next'
Ursula Braun says:
====================
s390: qeth and iucv patches
here is version 2 of some s390 related qeth patches for net-next. The patch by
Thomas Richter adds a new feature to the qeth layer2 code; the remaining
patches are minor improvements.
Version 2 of patch 4 uses the desired indentation in function declarations
and definitions spanning multiple lines in almost all cases. Thomas run into a
conflict with the maximum number of columns once. Thus you will still see one
function definition using an earlier column before the opening paranthesis.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The iucv code uses arrays as arguments. Even though this does not
really cause a problem, it could be misleading, since the compiler
turns array arguments into just a pointer argument. To be more
precise this patch changes the array arguments into pointers.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Richter [Fri, 18 Sep 2015 14:06:51 +0000 (16:06 +0200)]
qeth: add layer 2 RX/TX checksum offloading
Checksum offloading for send and receive is already
supported for layer 3 (IP layer). This patch
adds support for RX and TX hardware checksum offloading
for layer 2 (MAC layer). The hardware calculates the checksum
for IP UDP and TCP packets.
This patch moves the hardware checksum offloading setup
to the set of common functions in qeth_core_main.c.
Layer 2 and layer 3 now simply call the same common functions.
Also note that TX checksum offloading is always enabled.
The device driver relies on the TCP/IP stack to make use of
this feature.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Reviewed-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
An OSA-Express port name was required to identify a shared OSA port.
All operating system instances that shared the port had to use the
same port name. This requirement no longer applies.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
User is not allowed to write into bridge_state sysfs file.
Fixed attribute not mislead the user
Signed-off-by: Lakhvich Dmitriy <ldmitriy@ru.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Reported-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Reviewed-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com> Reviewed-by: Thomas Richter <tmricht@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Length specifier in the %pM format is not supported (at least, not
documented). Remove it, and also an extraneous '&' for the array.
Signed-off-by: Eugene Crosser <Eugene.Crosser@ru.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Here's the first bluetooth-next pull request for the 4.4 kernel:
- ieee802154 cleanups & fixes
- debugfs support for the at86rf230 driver
- Support for quirky (seemingly counterfeit) CSR Bluetooth controllers
- Power management and device config improvements for Intel controllers
- Fix for devices with incorrect advertising data length
- Fix for closing HCI user channel socket
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
can: flexcan: enable interrupts atomically at the end of flexcan_chip_start()
This patch defers the writing of the interrupts bits of the CTRL register order
to enables all interrupts atomically at the the of the flexcan_chip_start()
function.
Suggested-by: Torsten Lang <torsten.lang@uweschneider.de> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
can: flexcan: use pointer to struct regs instead of void pointer for mmio address space
This patch renames the pointer to the mmio address space from "base" to "regs"
and changes the type from "void __iomem *" to "struct flexcan_regs __iomem *".
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
projects / linux-beck.git / log