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authorMarcel Holtmann <marcel@holtmann.org>2021-10-28 02:58:38 +0300
committerMarcel Holtmann <marcel@holtmann.org>2021-10-29 17:51:58 +0300
commit6a98e3836fa2077b169f10a35c2ca9952d53f987 (patch)
treeeb946c539b2fea723954e4049c127051fdcd48c6 /net/bluetooth/hci_request.h
parent2128939fe2e771645dd88e1938c27fdf96bd1cd0 (diff)
downloadlinux-6a98e3836fa2077b169f10a35c2ca9952d53f987.tar.xz
Bluetooth: Add helper for serialized HCI command execution
The usage of __hci_cmd_sync() within the hdev->setup() callback allows for a nice and simple serialized execution of HCI commands. More importantly it allows for result processing before issueing the next command. With the current usage of hci_req_run() it is possible to batch up commands and execute them, but it is impossible to react to their results or errors. This is an attempt to generalize the hdev->setup() handling and provide a simple way of running multiple HCI commands from a single function context. There are multiple struct work that are decdicated to certain tasks already used right now. It is add a lot of bloat to hci_dev struct and extra handling code. So it might be possible to put all of these behind a common HCI command infrastructure and just execute the HCI commands from the same work context in a serialized fashion. For example updating the white list and resolving list can be done now without having to know the list size ahead of time. Also preparing for suspend or resume shouldn't require a state machine anymore. There are other tasks that should be simplified as well. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_request.h')
-rw-r--r--net/bluetooth/hci_request.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h
index f31420f58525..74c5de5970a7 100644
--- a/net/bluetooth/hci_request.h
+++ b/net/bluetooth/hci_request.h
@@ -25,6 +25,10 @@
#define hci_req_sync_lock(hdev) mutex_lock(&hdev->req_lock)
#define hci_req_sync_unlock(hdev) mutex_unlock(&hdev->req_lock)
+#define HCI_REQ_DONE 0
+#define HCI_REQ_PEND 1
+#define HCI_REQ_CANCELED 2
+
struct hci_request {
struct hci_dev *hdev;
struct sk_buff_head cmd_q;