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| author | Loic Poulain <loic.poulain@linaro.org> | 2018-04-26 13:13:26 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2018-05-18 06:37:52 +0200 |
| commit | d6ee6ad774a986d4faaa794a0980e7c50ed359c6 (patch) | |
| tree | af9db18d67dbbc4c8d7188ea26d641d70189e9c8 /net/bluetooth | |
| parent | d36dfb3e9b990b45bb812fd144b19737649a69ba (diff) | |
| download | linux-d6ee6ad774a986d4faaa794a0980e7c50ed359c6.tar.bz2 | |
Bluetooth: Add __hci_cmd_send function
This function allows to send a HCI command without expecting any
controller event/response in return. This is allowed for vendor-
specific commands only.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_core.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 40d260f2bea5..b0ee9edaae35 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3422,6 +3422,37 @@ int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, return 0; } +int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, + const void *param) +{ + struct sk_buff *skb; + + if (hci_opcode_ogf(opcode) != 0x3f) { + /* A controller receiving a command shall respond with either + * a Command Status Event or a Command Complete Event. + * Therefore, all standard HCI commands must be sent via the + * standard API, using hci_send_cmd or hci_cmd_sync helpers. + * Some vendors do not comply with this rule for vendor-specific + * commands and do not return any event. We want to support + * unresponded commands for such cases only. + */ + bt_dev_err(hdev, "unresponded command not supported"); + return -EINVAL; + } + + skb = hci_prepare_cmd(hdev, opcode, plen, param); + if (!skb) { + bt_dev_err(hdev, "no memory for command (opcode 0x%4.4x)", + opcode); + return -ENOMEM; + } + + hci_send_frame(hdev, skb); + + return 0; +} +EXPORT_SYMBOL(__hci_cmd_send); + /* Get data from the previously sent command */ void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) { |