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linux/net/ieee802154/pan.c

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ieee802154: Internal PAN management Introduce structures to describe peer devices in a PAN as well as a few related helpers. We basically care about: - Our unique parent after associating with a coordinator. - Peer devices, children, which successfully associated with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-3-miquel.raynal@bootlin.com
2023-09-27 20:12:05 +02:00
mac802154: Handle disassociations Devices may decide to disassociate from their coordinator for different reasons (device turning off, coordinator signal strength too low, etc), the MAC layer just has to send a disassociation notification. If the ack of the disassociation notification is not received, the device may consider itself disassociated anyway. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-7-miquel.raynal@bootlin.com
2023-09-27 20:12:09 +02:00
ieee802154: Internal PAN management Introduce structures to describe peer devices in a PAN as well as a few related helpers. We basically care about: - Our unique parent after associating with a coordinator. - Peer devices, children, which successfully associated with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-3-miquel.raynal@bootlin.com
2023-09-27 20:12:05 +02:00
mac802154: Handle disassociations Devices may decide to disassociate from their coordinator for different reasons (device turning off, coordinator signal strength too low, etc), the MAC layer just has to send a disassociation notification. If the ack of the disassociation notification is not received, the device may consider itself disassociated anyway. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-7-miquel.raynal@bootlin.com
2023-09-27 20:12:09 +02:00
mac802154: Handle association requests from peers Coordinators may have to handle association requests from peers which want to join the PAN. The logic involves: - Acknowledging the request (done by hardware) - If requested, a random short address that is free on this PAN should be chosen for the device. - Sending an association response with the short address allocated for the peer and expecting it to be ack'ed. If anything fails during this procedure, the peer is considered not associated. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-8-miquel.raynal@bootlin.com
2023-09-27 20:12:10 +02:00
ieee802154: Add support for limiting the number of associated devices Coordinators may refuse associations. We need a user input for that. Let's add a new netlink command which can provide a maximum number of devices we accept to associate with as a first step. Later, we could also forward the request to userspace and check whether the association should be accepted or not. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-9-miquel.raynal@bootlin.com
2023-09-27 20:12:11 +02:00
mac802154: Avoid new associations while disassociating While disassociating from a PAN ourselves, let's set the maximum number of associations temporarily to zero to be sure no new device tries to associate with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20231128111655.507479-6-miquel.raynal@bootlin.com
2023-11-28 12:16:55 +01:00
ieee802154: Add support for limiting the number of associated devices Coordinators may refuse associations. We need a user input for that. Let's add a new netlink command which can provide a maximum number of devices we accept to associate with as a first step. Later, we could also forward the request to userspace and check whether the association should be accepted or not. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-9-miquel.raynal@bootlin.com
2023-09-27 20:12:11 +02:00
mac802154: Avoid new associations while disassociating While disassociating from a PAN ourselves, let's set the maximum number of associations temporarily to zero to be sure no new device tries to associate with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20231128111655.507479-6-miquel.raynal@bootlin.com
2023-11-28 12:16:55 +01:00
ieee802154: Add support for limiting the number of associated devices Coordinators may refuse associations. We need a user input for that. Let's add a new netlink command which can provide a maximum number of devices we accept to associate with as a first step. Later, we could also forward the request to userspace and check whether the association should be accepted or not. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-9-miquel.raynal@bootlin.com
2023-09-27 20:12:11 +02:00
mac802154: Avoid new associations while disassociating While disassociating from a PAN ourselves, let's set the maximum number of associations temporarily to zero to be sure no new device tries to associate with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20231128111655.507479-6-miquel.raynal@bootlin.com
2023-11-28 12:16:55 +01:00
ieee802154: Add support for limiting the number of associated devices Coordinators may refuse associations. We need a user input for that. Let's add a new netlink command which can provide a maximum number of devices we accept to associate with as a first step. Later, we could also forward the request to userspace and check whether the association should be accepted or not. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-9-miquel.raynal@bootlin.com
2023-09-27 20:12:11 +02:00
mac802154: Avoid new associations while disassociating While disassociating from a PAN ourselves, let's set the maximum number of associations temporarily to zero to be sure no new device tries to associate with us. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20231128111655.507479-6-miquel.raynal@bootlin.com
2023-11-28 12:16:55 +01:00
ieee802154: Add support for limiting the number of associated devices Coordinators may refuse associations. We need a user input for that. Let's add a new netlink command which can provide a maximum number of devices we accept to associate with as a first step. Later, we could also forward the request to userspace and check whether the association should be accepted or not. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/linux-wpan/20230927181214.129346-9-miquel.raynal@bootlin.com
2023-09-27 20:12:11 +02:00