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25 Коммитов

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Alexander Aring 19580cc1ed ieee802154: add ieee802154_skb_src_pan helper
This patch adds ieee802154_skb_src_pan function to get the pointer
address of the source pan id at skb mac pointer.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-07-08 13:23:12 +02:00
Alexander Aring 9cc577dd25 ieee802154: add ieee802154_skb_dst_pan helper
This patch adds ieee802154_skb_dst_pan function to get the pointer
address of the destination pan id at skb mac pointer.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-07-08 13:23:12 +02:00
Alexander Aring 118a5cf8ae ieee802154: add short address helpers
This patch introduce some short address handling functionality into
ieee802154 headers.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-04-13 10:41:08 +02:00
Alexander Aring b7594148c7 ieee802154: cleanups for ieee802154.h
This patch removes some const from non-pointer types and fixes the
function name for the ieee802154_is_valid_extended_unicast_addr
comment.

Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-04-13 10:41:08 +02:00
Alexandre Macabies bc405cd69a ieee802154: add security bit check function
ieee802154_is_secen checks if the 802.15.4 security bit is set in the
frame control field.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Alexandre Macabies <web+oss@zopieux.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2016-04-13 10:36:02 +02:00
Alexander Aring f856f21dbc 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>
2015-09-24 20:42:37 +02:00
Alexander Aring 79750ac425 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>
2015-09-22 11:51:22 +02:00
Alexander Aring 87a93e4ece 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>
2015-09-22 11:51:20 +02:00
Alexander Aring 54552d0302 ieee802154: 6lowpan: check on valid 802.15.4 frame
This patch adds frame control checks to check if the received frame is
something which could contain a 6LoWPAN packet.

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>
2015-09-17 13:20:04 +02:00
Lennert Buytenhek daf4e2c892 ieee802154: Fix EUI-64 station address validation.
Refuse to allow setting an EUI-64 group address as an interface
address, as those are not valid station addresses.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-05-31 13:40:53 +02:00
Lennert Buytenhek 3b369bd212 ieee802154: Fix generation of random EUI-64 addresses.
Currently, ieee802154_random_extended_addr() has a 50% chance of
generating a group (multicast) address, while this function is used
for generating station addresses (which can't be group addresses)
for interfaces that don't have a hardware-provided address.

Also, in case get_random_bytes() generates the EUI-64 address
00:00:00:00:00:00:00:00 (extremely unlikely), which is an invalid
address, ieee802154_random_extended_addr() reacts by changing it
to 01:00:00:00:00:00:00:00, which is an invalid station address as
well, as it is a group address.

This patch changes the address generation procedure to grab eight
random bytes, treat that as an EUI-64, and then clear the Group
address bit and set the Locally Administered bit, which is in
line with how eth_random_addr() generates random EUI-48s.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-05-31 13:40:53 +02:00
Alexander Aring 3f3c4bb5ec mac802154: correct max sifs size handling
This patch fix the max sifs size correction when the
IEEE802154_HW_TX_OMIT_CKSUM flag is set. With this flag the sk_buff
doesn't contain the CRC, because the transceiver will add the CRC
while transmit.

Also add some defines for the max sifs frame size value and frame check
sequence according to 802.15.4 standard.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-14 17:11:30 +01:00
Alexander Aring 306f7aa180 ieee802154: correct ieee802154_is_valid_psdu_len
This patch corrects the ieee802154_is_valid_psdu_len function that this
function also checks on reserved values 6-8 for validation the psdu
length.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-02-14 05:19:58 +01:00
Alexander Aring cb41c8dd01 ieee802154: rename and move WPAN_NUM_ defines
This patch moves the 802.15.4 constraints WPAN_NUM_ defines into
"net/ieee802154.h" which should contain all necessary 802.15.4 related
information. Also rename these defines to a common name which is
IEEE802154_MAX_CHANNEL and IEEE802154_MAX_PAGE.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-17 09:49:17 +01:00
Alexander Aring 61f2dcba9a mac802154: add interframe spacing time handling
This patch adds a new interframe spacing time handling into mac802154
layer. Interframe spacing time is a time period between each transmit.
This patch adds a high resolution timer into mac802154 and starts on
xmit complete with corresponding interframe spacing expire time if
ifs_handling is true. We make it variable because it depends if
interframe spacing time is handled by transceiver or mac802154. At the
timer complete function we wake the netdev queue again. This avoids
new frame transmit in range of interframe spacing time.

For synced driver we add no handling of interframe spacing time. This
is currently a lack of support in all synced xmit drivers. I suppose
it's working because the latency of workqueue which is needed to call
spi_sync.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-13 04:51:58 +01:00
Alexander Aring 9830c62a0b ieee820154: add short_addr setting support
This patch adds support for setting short address via nl802154 framework.
Also added a comment because a 0xffff seems to be valid address that we
don't have a short address. This is a valid setting but we need
more checks in upper layers to don't allow this address as source address.
Also the current netlink interface doesn't allow to set the short_addr
to 0xffff. Same for the 0xfffe short address which describes a not
allocated short address.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-12 05:10:40 +01:00
Alexander Aring 702bf37128 ieee820154: add pan_id setting support
This patch adds support for setting pan_id via nl802154 framework.
Adding a comment because setting 0xffff as pan_id seems to be valid
setting. The pan_id 0xffff as source pan is invalid. I am not sure now
about this setting but for the current netlink interface this is an
invalid setting, so we do the same now. Maybe we need to change that
when we have coordinator support and association support.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-12 05:10:39 +01:00
Alexander Aring 35d5a374a5 ieee802154: add ieee802154_random_extended_addr
This patch adds a new function to generate a random IEEE 802.15.4
extended address.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:04 +01:00
Alexander Aring 1906bbbddb ieee802154: add IEEE802154_EXTENDED_ADDR_LEN
This patch adds a new define for getting the length of an extended
address.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-05 21:53:04 +01:00
Dan Carpenter 0d8a52f933 ieee802154: || vs && in ieee802154_is_valid_extended_addr()
The ieee802154_is_valid_extended_addr() always returns true because
there is a typo.  The || should be &&.  Neither 0x0000000000000000ULL
nor 0xffffffffffffffffULL are valid addresses.

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>
2014-11-04 17:44:48 +01:00
Alexander Aring c28bee84c5 ieee802154: fix byteorder issues
This patch fix byteorder issues which occurs because we compare __le64
with an host byteorder value. Simple add a cpu_to_le64 to convert the
host byteorder values to __le64.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02 21:52:02 +01:00
Alexander Aring a4164eb4dd ieee802154: add missing ULL definition
Running make C=2 occurs warning:

constant 0xffffffffffffffff is so big it is unsigned long

This patch fix this warning by adding a ULL to the constant definitions.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02 21:52:02 +01:00
Alexander Aring cb904b0a16 ieee802154: add extended address validation helper
This patch introduce an extended address validation helper to check if
an extended address is valid or not.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-11-02 04:51:08 +01:00
Alexander Aring fa491001e4 ieee802154: add valid psdu length helper
This patch adds a generic valid psdu length check function helper. This
is useful to check the length field after receiving. For example the
at86rf231 doesn't filter invalid psdu length. Sometimes the CRC can also
be correct. If we get the lqi value with an invalid frame length the
kernel may crash because we dereference an invalid pointer in the
receive buffer.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-27 18:07:49 +01:00
Alexander Aring 4ca24aca55 ieee802154: move ieee802154 header
This patch moves the ieee802154 header into include/linux instead
include/net. Similar like wireless which have the ieee80211 header
inside of include/linux.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2014-10-25 21:39:57 +02:00