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Backport HCI channel user to 3.10.98 #23
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The handling of the raw socket filter is rather obscure code and it gets in the way of future extensions. Instead of inline filtering in the raw socket packet routine, refactor it into its own function. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
The HCI sockets do not have a peer associated with it and so make sure that getpeername() returns EOPNOTSUPP since this operation is actually not supported on HCI sockets. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
The hci_dev check is not protected and so move it into the socket lock. In addition return the HCI channel identifier instead of always 0 channel. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Even if this is legacy API, there is no reason to not report a proper error when trying to reset a HCI device that is down. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
The HCI sockets for monitor and control do not support any HCI specific socket options and if tried, an error will be returned. However the error used is EINVAL and that is not really descriptive. To make it clear that these sockets are not handling HCI socket options, return EBADFD instead. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
The various legacy ioctls used with HCI sockets are limited to raw channel only. They are not used on the other channels and also have no meaning there. So return an error if tried to use them. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Why not to use upstream kernel? |
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HCI User channel was introduced in 3.14.
It was a important feature for user to implement bluetooth stack in user space.