Merge tag 'ieee802154-for-net-next-2023-12-20' of gitolite.kernel.org:pub/scm/linux/kernel/git/wpan/wpan-next

Miquel Raynal says:

====================
This pull request mainly brings support for dynamic associations in
the WPAN world. Thanks to the recent improvements it was possible to
discover nearby devices, it is now also possible to associate with them
to form a sub-network using a specific PAN ID. The support includes
several functions, such as:

* Requesting an association to a coordinator, waiting for the response
* Sending a disassociation notification to a coordinator
* Receiving an association request when we are coordinator, answering
  the request (for now all devices are accepted up to a limit, to be
  refined)
* Sending a disassociation notification to a child
* Users may request the list of associated devices (the parent and the
  children).

Here are a few example of userspace calls that can be made:
 # iwpan dev <dev> associate pan_id 2 coord $COORD
 # iwpan dev <dev> list_associations
 # iwpan dev <dev> disassociate ext_addr $COORD

There are as well two patches from Uwe turning remove callbacks into
void functions.

* tag 'ieee802154-for-net-next-2023-12-20' of gitolite.kernel.org:pub/scm/linux/kernel/git/wpan/wpan-next:
  mac802154: Avoid new associations while disassociating
  ieee802154: Avoid confusing changes after associating
  mac802154: Only allow PAN controllers to process association requests
  mac802154: Use the PAN coordinator parameter when stamping packets
  mac80254: Provide real PAN coordinator info in beacons
  ieee802154: Give the user the association list
  mac802154: Handle disassociation notifications from peers
  mac802154: Follow the number of associated devices
  ieee802154: Add support for limiting the number of associated devices
  mac802154: Handle association requests from peers
  mac802154: Handle disassociations
  ieee802154: Add support for user disassociation requests
  mac802154: Handle associating
  ieee802154: Add support for user association requests
  ieee802154: Internal PAN management
  ieee802154: Let PAN IDs be reset
  ieee802154: hwsim: Convert to platform remove callback returning void
  ieee802154: fakelb: Convert to platform remove callback returning void
====================

Link: https://lore.kernel.org/r/20231220095556.4d9cef91@xps-13
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h
index 063313df447d..4de858f9929e 100644
--- a/include/net/ieee802154_netdev.h
+++ b/include/net/ieee802154_netdev.h
@@ -125,6 +125,35 @@ struct ieee802154_hdr_fc {
 #endif
 };
 
+struct ieee802154_assoc_req_pl {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+	u8 reserved1:1,
+	   device_type:1,
+	   power_source:1,
+	   rx_on_when_idle:1,
+	   assoc_type:1,
+	   reserved2:1,
+	   security_cap:1,
+	   alloc_addr:1;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+	u8 alloc_addr:1,
+	   security_cap:1,
+	   reserved2:1,
+	   assoc_type:1,
+	   rx_on_when_idle:1,
+	   power_source:1,
+	   device_type:1,
+	   reserved1:1;
+#else
+#error	"Please fix <asm/byteorder.h>"
+#endif
+} __packed;
+
+struct ieee802154_assoc_resp_pl {
+	__le16 short_addr;
+	u8 status;
+} __packed;
+
 enum ieee802154_frame_version {
 	IEEE802154_2003_STD,
 	IEEE802154_2006_STD,
@@ -140,6 +169,19 @@ enum ieee802154_addressing_mode {
 	IEEE802154_EXTENDED_ADDRESSING,
 };
 
+enum ieee802154_association_status {
+	IEEE802154_ASSOCIATION_SUCCESSFUL = 0x00,
+	IEEE802154_PAN_AT_CAPACITY = 0x01,
+	IEEE802154_PAN_ACCESS_DENIED = 0x02,
+	IEEE802154_HOPPING_SEQUENCE_OFFSET_DUP = 0x03,
+	IEEE802154_FAST_ASSOCIATION_SUCCESSFUL = 0x80,
+};
+
+enum ieee802154_disassociation_reason {
+	IEEE802154_COORD_WISHES_DEVICE_TO_LEAVE = 0x1,
+	IEEE802154_DEVICE_WISHES_TO_LEAVE = 0x2,
+};
+
 struct ieee802154_hdr {
 	struct ieee802154_hdr_fc fc;
 	u8 seq;
@@ -163,6 +205,24 @@ struct ieee802154_beacon_req_frame {
 	struct ieee802154_mac_cmd_pl mac_pl;
 };
 
+struct ieee802154_association_req_frame {
+	struct ieee802154_hdr mhr;
+	struct ieee802154_mac_cmd_pl mac_pl;
+	struct ieee802154_assoc_req_pl assoc_req_pl;
+};
+
+struct ieee802154_association_resp_frame {
+	struct ieee802154_hdr mhr;
+	struct ieee802154_mac_cmd_pl mac_pl;
+	struct ieee802154_assoc_resp_pl assoc_resp_pl;
+};
+
+struct ieee802154_disassociation_notif_frame {
+	struct ieee802154_hdr mhr;
+	struct ieee802154_mac_cmd_pl mac_pl;
+	u8 disassoc_pl;
+};
+
 /* pushes hdr onto the skb. fields of hdr->fc that can be calculated from
  * the contents of hdr will be, and the actual value of those bits in
  * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame