From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
This patch implements the read_info command which is used to fetch basic
info about an adapter.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/mgmt.h | 19 +++++++++
net/bluetooth/mgmt.c | 90 ++++++++++++++++++++++++++++++++++++++----
2 files changed, 101 insertions(+), 8 deletions(-)
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index c2b4c83..70985aa 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -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;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 7a8e321..d6c5a32 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -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);
--
1.7.2.3
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