mac802154: Handle passive scanning

Implement the core hooks in order to provide the softMAC layer support
for passive scans. Scans are requested by the user and can be aborted.

Changing channels ma

mac802154: Handle passive scanning

Implement the core hooks in order to provide the softMAC layer support
for passive scans. Scans are requested by the user and can be aborted.

Changing channels manually is prohibited during scans.

The implementation uses a workqueue triggered at a certain interval
depending on the symbol duration for the current channel and the
duration order provided. More advanced drivers with internal scheduling
capabilities might require additional care but there is none mainline
yet.

Received beacons during a passive scan are processed in a work queue and
their result forwarded to the upper layer.

Active scanning is not supported yet.

Co-developed-by: David Girault <[email protected]>
Signed-off-by: David Girault <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stefan Schmidt <[email protected]>

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ieee802154: Add support for user scanning requests

The ieee802154 layer should be able to scan a set of channels in order
to look for beacons advertizing PANs. Supporting this involves adding
two us

ieee802154: Add support for user scanning requests

The ieee802154 layer should be able to scan a set of channels in order
to look for beacons advertizing PANs. Supporting this involves adding
two user commands: triggering scans and aborting scans. The user should
also be notified when a new beacon is received and also upon scan
termination.

A scan request structure is created to list the requirements and to be
accessed asynchronously when changing channels or receiving beacons.

Mac layers may now implement the ->trigger_scan() and ->abort_scan()
hooks.

Co-developed-by: David Girault <[email protected]>
Signed-off-by: David Girault <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stefan Schmidt <[email protected]>

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mac802154: Introduce filtering levels

The 802154 specification details several filtering levels in which the
PHY and the MAC could be. The amount of filtering will vary if they are
in promiscuous mo

mac802154: Introduce filtering levels

The 802154 specification details several filtering levels in which the
PHY and the MAC could be. The amount of filtering will vary if they are
in promiscuous mode or in scanning mode. Otherwise they are expected to
do some very basic checks, such as enforcing the frame validity. Either
the PHY is able to do so, and the MAC has nothing to do, or the PHY has
a lower filtering level than expected and the MAC should take over.

For now we just define these levels in an enumeration.

In a second time, we will add a per-PHY parameter showing the expected
filtering level as well as a per device current filtering level, and
will initialize all these fields.

In a third time, we will use them to apply more filtering by software
when the PHY is limited.

Indeed, if the drivers know they cannot reach the requested level of
filtering, they will overwrite the "current filtering" parameter so that
it reflects what they do. Then, in the core, the expected filtering
level will be used to decide whether some additional software processing
is needed or not.

Signed-off-by: Miquel Raynal <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stefan Schmidt <[email protected]>

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net: ieee802154: Fill the list of MLME return codes

There are more codes than already listed, let's be a bit more
exhaustive. This will allow to drop device drivers local definitions of
these codes.

net: ieee802154: Fill the list of MLME return codes

There are more codes than already listed, let's be a bit more
exhaustive. This will allow to drop device drivers local definitions of
these codes.

Signed-off-by: Miquel Raynal <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stefan Schmidt <[email protected]>

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net: ieee802154: Enhance/fix the names of the MLME return codes

Let's keep these definitions as close to the specification as possible
while they are not yet in use. The names get slightly longer, b

net: ieee802154: Enhance/fix the names of the MLME return codes

Let's keep these definitions as close to the specification as possible
while they are not yet in use. The names get slightly longer, but we
gain the minor cost of being able to search the spec more easily.

Signed-off-by: Miquel Raynal <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stefan Schmidt <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation this program is
distributed in the hope that it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Richard Fontana <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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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

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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ieee802154: add short address helpers

This patch introduce some short address handling functionality into
ieee802154 headers.

Reviewed-by: Stefan Schmidt <[email protected]>
Signed-off-by: Ale

ieee802154: add short address helpers

This patch introduce some short address handling functionality into
ieee802154 headers.

Reviewed-by: Stefan Schmidt <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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

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 <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Acked-by: Jukka Rissanen <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 <[email protected]>
Signed-off

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 <[email protected]>
Signed-off-by: Alexandre Macabies <[email protected]>
Reviewed-by: Stefan Schmidt <[email protected]>
Acked-by: Alan Ott <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 c

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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
acknowl

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 <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 he

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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

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 <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 Buytenhe

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 <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 genera

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 <[email protected]>
Acked-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 th

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 <[email protected]>
Acked-by: Marc Kleine-Budde <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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.

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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. Als

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 patc

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 hav

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 0xff

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 <[email protected]>
Signed-off-

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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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 <[email protected]>
Signed-off-by: Marcel

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 <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>

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