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Bluetooth: Add read_info management command

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This patch implements the read_info command which is used to fetch basic
info about an adapter.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Johan Hedberg 2010-12-13 21:07:06 +02:00 committed by Gustavo F. Padovan
parent faba42eb2a
commit f7b64e69c7
2 changed files with 101 additions and 8 deletions
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19
include/net/bluetooth/mgmt.h
View File

@ -39,6 +39,25 @@ struct mgmt_rp_read_index_list {
__le16 index[0];
} __packed;
#define MGMT_OP_READ_INFO 0x0004
struct mgmt_cp_read_info {
__le16 index;
} __packed;
struct mgmt_rp_read_info {
__le16 index;
__u8 type;
__u8 powered;
__u8 discoverable;
__u8 pairable;
__u8 sec_mode;
bdaddr_t bdaddr;
__u8 dev_class[3];
__u8 features[8];
__u16 manufacturer;
__u8 hci_ver;
__u16 hci_rev;
} __packed;
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;

90
net/bluetooth/mgmt.c
View File

@ -32,6 +32,33 @@
#define MGMT_VERSION 0
#define MGMT_REVISION 1
static int cmd_status(struct sock *sk, u16 cmd, u8 status)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
struct mgmt_ev_cmd_status *ev;
BT_DBG("sock %p", sk);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_ATOMIC);
if (!skb)
return -ENOMEM;
hdr = (void *) skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
hdr->len = cpu_to_le16(sizeof(*ev));
ev = (void *) skb_put(skb, sizeof(*ev));
ev->status = status;
put_unaligned_le16(cmd, &ev->opcode);
if (sock_queue_rcv_skb(sk, skb) < 0)
kfree_skb(skb);
return 0;
}
static int read_version(struct sock *sk)
{
struct sk_buff *skb;
@ -112,26 +139,70 @@ static int read_index_list(struct sock *sk)
return 0;
}
static int cmd_status(struct sock *sk, u16 cmd, u8 status)
static int read_controller_info(struct sock *sk, unsigned char *data, u16 len)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
struct mgmt_ev_cmd_status *ev;
struct mgmt_ev_cmd_complete *ev;
struct mgmt_rp_read_info *rp;
struct mgmt_cp_read_info *cp;
struct hci_dev *hdev;
u16 dev_id;
BT_DBG("sock %p", sk);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_ATOMIC);
if (len != 2)
return cmd_status(sk, MGMT_OP_READ_INFO, EINVAL);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC);
if (!skb)
return -ENOMEM;
hdr = (void *) skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
hdr->len = cpu_to_le16(sizeof(*ev));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
hdr->len = cpu_to_le16(sizeof(*ev) + sizeof(*rp));
ev = (void *) skb_put(skb, sizeof(*ev));
ev->status = status;
put_unaligned_le16(cmd, &ev->opcode);
put_unaligned_le16(MGMT_OP_READ_INFO, &ev->opcode);
rp = (void *) skb_put(skb, sizeof(*rp));
cp = (void *) data;
dev_id = get_unaligned_le16(&cp->index);
BT_DBG("request for hci%u", dev_id);
hdev = hci_dev_get(dev_id);
if (!hdev) {
kfree_skb(skb);
return cmd_status(sk, MGMT_OP_READ_INFO, ENODEV);
}
hci_dev_lock_bh(hdev);
put_unaligned_le16(hdev->id, &rp->index);
rp->type = hdev->dev_type;
rp->powered = test_bit(HCI_UP, &hdev->flags);
rp->discoverable = test_bit(HCI_ISCAN, &hdev->flags);
rp->pairable = test_bit(HCI_PSCAN, &hdev->flags);
if (test_bit(HCI_AUTH, &hdev->flags))
rp->sec_mode = 3;
else if (hdev->ssp_mode > 0)
rp->sec_mode = 4;
else
rp->sec_mode = 2;
bacpy(&rp->bdaddr, &hdev->bdaddr);
memcpy(rp->features, hdev->features, 8);
memcpy(rp->dev_class, hdev->dev_class, 3);
put_unaligned_le16(hdev->manufacturer, &rp->manufacturer);
rp->hci_ver = hdev->hci_ver;
put_unaligned_le16(hdev->hci_rev, &rp->hci_rev);
hci_dev_unlock_bh(hdev);
hci_dev_put(hdev);
if (sock_queue_rcv_skb(sk, skb) < 0)
kfree_skb(skb);
@ -176,6 +247,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
case MGMT_OP_READ_INDEX_LIST:
err = read_index_list(sk);
break;
case MGMT_OP_READ_INFO:
err = read_controller_info(sk, buf + sizeof(*hdr), len);
break;
default:
BT_DBG("Unknown op %u", opcode);
err = cmd_status(sk, opcode, 0x01);