Hello,
Here is a series attempting to bring support for passive scans in the
IEEE 802.15.4 stack. A second series follows in order to align the
tooling with these changes, bringing support for a number of new
features such as:
* Passively sending (or stopping) beacons. So far only intervals ranging
from 0 to 14 are valid. Bigger values would request the PAN
coordinator to answer BEACONS_REQ (active scans), this is not
supported yet.
# iwpan dev wpan0 beacons send interval 2
# iwpan dev wpan0 beacons stop
* Scanning all the channels or only a subset:
# iwpan dev wpan1 scan type passive duration 3
* If a beacon is received during this operation the internal PAN list is
updated and can be dumped or flushed with:
# iwpan dev wpan1 pans dump
PAN 0xffff (on wpan1)
coordinator 0x2efefdd4cdbf9330
page 0
channel 13
superframe spec. 0xcf22
LQI 0
seen 7156ms ago
# iwpan dev wpan1 pans flush
* It is also possible to monitor the events with:
# iwpan event
* As well as triggering a non blocking scan:
# iwpan dev wpan1 scan trigger type passive duration 3
# iwpan dev wpan1 scan done
# iwpan dev wpan1 scan abort
The PAN list gets automatically updated by dropping the expired PANs
each time the user requests access to the list.
Internally, both requests (scan/beacons) are handled periodically by
delayed workqueues.
So far the only technical point that is missing in this series is the
possibility to grab a reference over the module driving the net device
in order to prevent module unloading during a scan or when the beacons
work is ongoing.
Finally, this series is a deep reshuffle of David Girault's original
work, hence the fact that he is almost systematically credited, either
by being the only author when I created the patches based on his changes
with almost no modification, or with a Co-developped-by tag whenever the
final code base is significantly different than his first proposal while
still being greatly inspired from it.
Cheers,
Miquèl
David Girault (5):
net: ieee802154: Move IEEE 802.15.4 Kconfig main entry
net: mac802154: Include the softMAC stack inside the IEEE 802.15.4
menu
net: ieee802154: Move the address structure earlier
net: ieee802154: Add a kernel doc header to the ieee802154_addr
structure
net: ieee802154: Trace the registration of new PANs
Miquel Raynal (13):
ieee802154: hwsim: Ensure proper channel selection at probe time
ieee802154: hwsim: Provide a symbol duration
net: ieee802154: Return meaningful error codes from the netlink
helpers
net: ieee802154: Add support for internal PAN management
net: ieee802154: Define a beacon frame header
net: ieee802154: Define frame types
net: ieee802154: Add support for scanning requests
net: mac802154: Handle scan requests
net: mac802154: Inform device drivers about the scanning operation
net: ieee802154: Full PAN management
net: ieee802154: Add support for beacon requests
net: mac802154: Handle beacons requests
net: mac802154: Let drivers provide their own beacons implementation
drivers/net/ieee802154/mac802154_hwsim.c | 77 +++-
include/linux/ieee802154.h | 6 +
include/net/cfg802154.h | 107 +++++-
include/net/ieee802154_netdev.h | 71 ++++
include/net/mac802154.h | 40 ++
include/net/nl802154.h | 95 +++++
net/Kconfig | 3 +-
net/ieee802154/Kconfig | 1 +
net/ieee802154/Makefile | 2 +-
net/ieee802154/core.c | 2 +
net/ieee802154/core.h | 23 ++
net/ieee802154/header_ops.c | 29 ++
net/ieee802154/nl802154.c | 466 ++++++++++++++++++++++-
net/ieee802154/nl802154.h | 4 +
net/ieee802154/pan.c | 211 ++++++++++
net/ieee802154/rdev-ops.h | 52 +++
net/ieee802154/trace.h | 86 +++++
net/mac802154/Makefile | 2 +-
net/mac802154/cfg.c | 76 ++++
net/mac802154/driver-ops.h | 66 ++++
net/mac802154/ieee802154_i.h | 28 ++
net/mac802154/main.c | 4 +
net/mac802154/rx.c | 10 +-
net/mac802154/scan.c | 374 ++++++++++++++++++
net/mac802154/trace.h | 49 +++
net/mac802154/util.c | 26 ++
26 files changed, 1889 insertions(+), 21 deletions(-)
create mode 100644 net/ieee802154/pan.c
create mode 100644 net/mac802154/scan.c
--
2.27.0
