Hi Tedd,
On Tue, Jul 27, 2021 at 4:53 PM Tedd Ho-Jeong An <hj.tedd.an@xxxxxxxxx> wrote:
>
> From: Tedd Ho-Jeong An <tedd.an@xxxxxxxxx>
>
> 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 <tedd.an@xxxxxxxxx>
> ---
> drivers/bluetooth/bfusb.c | 2 +-
> drivers/bluetooth/bluecard_cs.c | 2 +-
> drivers/bluetooth/bpa10x.c | 2 +-
> drivers/bluetooth/bt3c_cs.c | 2 +-
> drivers/bluetooth/btmrvl_main.c | 2 +-
> drivers/bluetooth/btmtksdio.c | 2 +-
> drivers/bluetooth/btmtkuart.c | 2 +-
> drivers/bluetooth/btqcomsmd.c | 2 +-
> drivers/bluetooth/btrsi.c | 2 +-
> drivers/bluetooth/btsdio.c | 2 +-
> drivers/bluetooth/btusb.c | 2 +-
> drivers/bluetooth/dtl1_cs.c | 2 +-
> drivers/bluetooth/hci_ldisc.c | 2 +-
> drivers/bluetooth/hci_serdev.c | 2 +-
> drivers/bluetooth/hci_vhci.c | 2 +-
> drivers/bluetooth/virtio_bt.c | 2 +-
> include/net/bluetooth/hci_core.h | 7 ++++++-
> net/bluetooth/hci_core.c | 11 +++++++++--
> 18 files changed, 31 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
> index 5a321b4076aa..430e230999fa 100644
> --- a/drivers/bluetooth/bfusb.c
> +++ b/drivers/bluetooth/bfusb.c
> @@ -651,7 +651,7 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
> release_firmware(firmware);
>
> /* Initialize and register HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> goto done;
> diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
> index 36eabf61717f..d62b878aff7e 100644
> --- a/drivers/bluetooth/bluecard_cs.c
> +++ b/drivers/bluetooth/bluecard_cs.c
> @@ -694,7 +694,7 @@ static int bluecard_open(struct bluecard_info *info)
> info->rx_skb = NULL;
>
> /* Initialize HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c
> index 1fa58c059cbf..bd670352a336 100644
> --- a/drivers/bluetooth/bpa10x.c
> +++ b/drivers/bluetooth/bpa10x.c
> @@ -380,7 +380,7 @@ static int bpa10x_probe(struct usb_interface *intf,
> init_usb_anchor(&data->tx_anchor);
> init_usb_anchor(&data->rx_anchor);
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev)
> return -ENOMEM;
>
> diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
> index 54713833951a..cd135a736688 100644
> --- a/drivers/bluetooth/bt3c_cs.c
> +++ b/drivers/bluetooth/bt3c_cs.c
> @@ -550,7 +550,7 @@ static int bt3c_open(struct bt3c_info *info)
> info->rx_skb = NULL;
>
> /* Initialize HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
> index 8b9d78ce6bb2..0157fa4ce528 100644
> --- a/drivers/bluetooth/btmrvl_main.c
> +++ b/drivers/bluetooth/btmrvl_main.c
> @@ -680,7 +680,7 @@ int btmrvl_register_hdev(struct btmrvl_private *priv)
> struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
> int ret;
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can not allocate HCI device");
> goto err_hdev;
> diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
> index 9872ef18f9fe..b48aec25c09d 100644
> --- a/drivers/bluetooth/btmtksdio.c
> +++ b/drivers/bluetooth/btmtksdio.c
> @@ -959,7 +959,7 @@ static int btmtksdio_probe(struct sdio_func *func,
> skb_queue_head_init(&bdev->txq);
>
> /* Initialize and register HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> dev_err(&func->dev, "Can't allocate HCI device\n");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c
> index e9d91d7c0db4..96ee364507c5 100644
> --- a/drivers/bluetooth/btmtkuart.c
> +++ b/drivers/bluetooth/btmtkuart.c
> @@ -987,7 +987,7 @@ static int btmtkuart_probe(struct serdev_device *serdev)
> skb_queue_head_init(&bdev->txq);
>
> /* Initialize and register HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> dev_err(&serdev->dev, "Can't allocate HCI device\n");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/btqcomsmd.c b/drivers/bluetooth/btqcomsmd.c
> index 2acb719e596f..47aaffceb8c1 100644
> --- a/drivers/bluetooth/btqcomsmd.c
> +++ b/drivers/bluetooth/btqcomsmd.c
> @@ -147,7 +147,7 @@ static int btqcomsmd_probe(struct platform_device *pdev)
> goto destroy_acl_channel;
> }
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> ret = -ENOMEM;
> goto destroy_cmd_channel;
> diff --git a/drivers/bluetooth/btrsi.c b/drivers/bluetooth/btrsi.c
> index 8646b6dd11e9..2f8d186e4807 100644
> --- a/drivers/bluetooth/btrsi.c
> +++ b/drivers/bluetooth/btrsi.c
> @@ -121,7 +121,7 @@ static int rsi_hci_attach(void *priv, struct rsi_proto_ops *ops)
> ops->set_bt_context(priv, h_adapter);
> h_adapter->proto_ops = ops;
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Failed to alloc HCI device");
> goto err;
> diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
> index 199e8f7d426d..69d2a26ed5db 100644
> --- a/drivers/bluetooth/btsdio.c
> +++ b/drivers/bluetooth/btsdio.c
> @@ -310,7 +310,7 @@ static int btsdio_probe(struct sdio_func *func,
>
> skb_queue_head_init(&data->txq);
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev)
> return -ENOMEM;
>
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index 1876a960b3dc..baf0934657d8 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -4575,7 +4575,7 @@ static int btusb_probe(struct usb_interface *intf,
> data->recv_bulk = btusb_recv_bulk;
> }
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev)
> return -ENOMEM;
>
> diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
> index 2adfe4fade76..f06c8151f0ea 100644
> --- a/drivers/bluetooth/dtl1_cs.c
> +++ b/drivers/bluetooth/dtl1_cs.c
> @@ -449,7 +449,7 @@ static int dtl1_open(struct dtl1_info *info)
> set_bit(XMIT_WAITING, &(info->tx_state));
>
> /* Initialize HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
> index 5ed2cfa7da1d..89eb9d7685ae 100644
> --- a/drivers/bluetooth/hci_ldisc.c
> +++ b/drivers/bluetooth/hci_ldisc.c
> @@ -627,7 +627,7 @@ static int hci_uart_register_dev(struct hci_uart *hu)
> BT_DBG("");
>
> /* Initialize and register HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> return -ENOMEM;
> diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c
> index 3b00d82d36cf..327fa2ecc5e7 100644
> --- a/drivers/bluetooth/hci_serdev.c
> +++ b/drivers/bluetooth/hci_serdev.c
> @@ -313,7 +313,7 @@ int hci_uart_register_device(struct hci_uart *hu,
> set_bit(HCI_UART_PROTO_READY, &hu->flags);
>
> /* Initialize and register HCI device */
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> BT_ERR("Can't allocate HCI device");
> err = -ENOMEM;
> diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
> index 8ab26dec5f6e..5486aa3945da 100644
> --- a/drivers/bluetooth/hci_vhci.c
> +++ b/drivers/bluetooth/hci_vhci.c
> @@ -96,7 +96,7 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
> if (!skb)
> return -ENOMEM;
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> kfree_skb(skb);
> return -ENOMEM;
> diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c
> index 57908ce4fae8..28576ec4860e 100644
> --- a/drivers/bluetooth/virtio_bt.c
> +++ b/drivers/bluetooth/virtio_bt.c
> @@ -283,7 +283,7 @@ static int virtbt_probe(struct virtio_device *vdev)
> if (err)
> return err;
>
> - hdev = hci_alloc_dev();
> + hdev = hci_alloc_dev(0);
> if (!hdev) {
> err = -ENOMEM;
> goto failed;
> diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
> index a53e94459ecd..5c689c5dc089 100644
> --- a/include/net/bluetooth/hci_core.h
> +++ b/include/net/bluetooth/hci_core.h
> @@ -1223,10 +1223,15 @@ static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
> dev_set_drvdata(&hdev->dev, data);
> }
>
> +static inline void *hci_get_priv(struct hci_dev *hdev)
> +{
> + return (char *)hdev + sizeof(*hdev);
> +}
> +
> struct hci_dev *hci_dev_get(int index);
> struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
>
> -struct hci_dev *hci_alloc_dev(void);
> +struct hci_dev *hci_alloc_dev(int sizeof_priv);
Just a minor suggestion here, we could perhaps have an alternative
version of hci_alloc_dev e.g hci_alloc_dev_priv so we don't need to
touch all the drivers like you did above.
> void hci_free_dev(struct hci_dev *hdev);
> int hci_register_dev(struct hci_dev *hdev);
> void hci_unregister_dev(struct hci_dev *hdev);
> diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
> index 2560ed2f144d..66b72c7efa3d 100644
> --- a/net/bluetooth/hci_core.c
> +++ b/net/bluetooth/hci_core.c
> @@ -3751,11 +3751,18 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action,
> }
>
> /* Alloc HCI device */
> -struct hci_dev *hci_alloc_dev(void)
> +struct hci_dev *hci_alloc_dev(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;
>
> --
> 2.26.3
>
--
Luiz Augusto von Dentz
