From 6ec566131de0e330fffd33753b325fb4d6b2d00e Mon Sep 17 00:00:00 2001 From: Tedd Ho-Jeong An Date: Wed, 4 Aug 2021 17:32:08 -0700 Subject: Bluetooth: Add support hdev to allocate private data This patch adds support hdev to allocate extra size for private data. The size of private data is specified in the hdev_alloc_size(priv_size) and the allocated buffer can be accessed with hci_get_priv(hdev). Signed-off-by: Tedd Ho-Jeong An Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_core.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'net/bluetooth') diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 2b78e1336c53..cb2e9e513907 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3751,11 +3751,18 @@ done: } /* Alloc HCI device */ -struct hci_dev *hci_alloc_dev(void) +struct hci_dev *hci_alloc_dev_priv(int sizeof_priv) { struct hci_dev *hdev; + unsigned int alloc_size; - hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); + alloc_size = sizeof(*hdev); + if (sizeof_priv) { + /* Fixme: May need ALIGN-ment? */ + alloc_size += sizeof_priv; + } + + hdev = kzalloc(alloc_size, GFP_KERNEL); if (!hdev) return NULL; @@ -3869,7 +3876,7 @@ struct hci_dev *hci_alloc_dev(void) return hdev; } -EXPORT_SYMBOL(hci_alloc_dev); +EXPORT_SYMBOL(hci_alloc_dev_priv); /* Free HCI device */ void hci_free_dev(struct hci_dev *hdev) -- cgit v1.2.3