Bluetooth: Implement set_pairable managment command

This patch implements a new set_pairable management command to control
the pairable state of local adapters. The state is represented using a
new HCI_PAIRABLE flag in the hci_dev struct.

For backwards compatibility with older user space versions the
HCI_PAIRABLE flag gets automatically set when the existence of an
adapter is reported to user space through legacy methods and the
HCI_MGMT flag is not set.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 469f8fd..f0c25b5 100644 (file)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -80,6 +80,7 @@ enum {
        HCI_SETUP,
        HCI_AUTO_OFF,
        HCI_MGMT,
+       HCI_PAIRABLE,
 };
 
 /* HCI ioctl defines */

diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index f61fd67..a554802 100644 (file)
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -70,6 +70,8 @@ struct mgmt_mode {
 
 #define MGMT_OP_SET_CONNECTABLE                0x0007
 
+#define MGMT_OP_SET_PAIRABLE           0x0008
+
 #define MGMT_EV_CMD_COMPLETE           0x0001
 struct mgmt_ev_cmd_complete {
        __le16 opcode;
@@ -103,3 +105,5 @@ struct mgmt_ev_index_removed {
 #define MGMT_EV_DISCOVERABLE           0x0007
 
 #define MGMT_EV_CONNECTABLE            0x0008
+
+#define MGMT_EV_PAIRABLE               0x0009

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index dfc4ef9..13eb5a8 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -799,10 +799,17 @@ int hci_get_dev_list(void __user *arg)
        read_lock_bh(&hci_dev_list_lock);
        list_for_each(p, &hci_dev_list) {
                struct hci_dev *hdev;
+
                hdev = list_entry(p, struct hci_dev, list);
+
                hci_del_off_timer(hdev);
+
+               if (!test_bit(HCI_MGMT, &hdev->flags))
+                       set_bit(HCI_PAIRABLE, &hdev->flags);
+
                (dr + n)->dev_id  = hdev->id;
                (dr + n)->dev_opt = hdev->flags;
+
                if (++n >= dev_num)
                        break;
        }
@@ -832,6 +839,9 @@ int hci_get_dev_info(void __user *arg)
 
        hci_del_off_timer(hdev);
 
+       if (!test_bit(HCI_MGMT, &hdev->flags))
+               set_bit(HCI_PAIRABLE, &hdev->flags);
+
        strcpy(di.name, hdev->name);
        di.bdaddr   = hdev->bdaddr;
        di.type     = (hdev->bus & 0x0f) | (hdev->dev_type << 4);

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 13872ae..d107350 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -481,6 +481,29 @@ failed:
        return err;
 }
 
+static int mgmt_event(u16 event, void *data, u16 data_len, struct sock *skip_sk)
+{
+       struct sk_buff *skb;
+       struct mgmt_hdr *hdr;
+
+       skb = alloc_skb(sizeof(*hdr) + data_len, GFP_ATOMIC);
+       if (!skb)
+               return -ENOMEM;
+
+       bt_cb(skb)->channel = HCI_CHANNEL_CONTROL;
+
+       hdr = (void *) skb_put(skb, sizeof(*hdr));
+       hdr->opcode = cpu_to_le16(event);
+       hdr->len = cpu_to_le16(data_len);
+
+       memcpy(skb_put(skb, data_len), data, data_len);
+
+       hci_send_to_sock(NULL, skb, skip_sk);
+       kfree_skb(skb);
+
+       return 0;
+}
+
 static int send_mode_rsp(struct sock *sk, u16 opcode, u16 index, u8 val)
 {
        struct mgmt_hdr *hdr;
@@ -509,6 +532,45 @@ static int send_mode_rsp(struct sock *sk, u16 opcode, u16 index, u8 val)
        return 0;
 }
 
+static int set_pairable(struct sock *sk, unsigned char *data, u16 len)
+{
+       struct mgmt_mode *cp, ev;
+       struct hci_dev *hdev;
+       u16 dev_id;
+       int err;
+
+       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)
+               return cmd_status(sk, MGMT_OP_SET_PAIRABLE, ENODEV);
+
+       hci_dev_lock_bh(hdev);
+
+       if (cp->val)
+               set_bit(HCI_PAIRABLE, &hdev->flags);
+       else
+               clear_bit(HCI_PAIRABLE, &hdev->flags);
+
+       err = send_mode_rsp(sk, MGMT_OP_SET_PAIRABLE, dev_id, cp->val);
+       if (err < 0)
+               goto failed;
+
+       put_unaligned_le16(dev_id, &ev.index);
+       ev.val = cp->val;
+
+       err = mgmt_event(MGMT_EV_PAIRABLE, &ev, sizeof(ev), sk);
+
+failed:
+       hci_dev_unlock_bh(hdev);
+       hci_dev_put(hdev);
+
+       return err;
+}
+
 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
 {
        unsigned char *buf;
@@ -558,6 +620,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)
        case MGMT_OP_SET_CONNECTABLE:
                err = set_connectable(sk, buf + sizeof(*hdr), len);
                break;
+       case MGMT_OP_SET_PAIRABLE:
+               err = set_pairable(sk, buf + sizeof(*hdr), len);
+               break;
        default:
                BT_DBG("Unknown op %u", opcode);
                err = cmd_status(sk, opcode, 0x01);
@@ -574,29 +639,6 @@ done:
        return err;
 }
 
-static int mgmt_event(u16 event, void *data, u16 data_len, struct sock *skip_sk)
-{
-       struct sk_buff *skb;
-       struct mgmt_hdr *hdr;
-
-       skb = alloc_skb(sizeof(*hdr) + data_len, GFP_ATOMIC);
-       if (!skb)
-               return -ENOMEM;
-
-       bt_cb(skb)->channel = HCI_CHANNEL_CONTROL;
-
-       hdr = (void *) skb_put(skb, sizeof(*hdr));
-       hdr->opcode = cpu_to_le16(event);
-       hdr->len = cpu_to_le16(data_len);
-
-       memcpy(skb_put(skb, data_len), data, data_len);
-
-       hci_send_to_sock(NULL, skb, skip_sk);
-       kfree_skb(skb);
-
-       return 0;
-}
-
 int mgmt_index_added(u16 index)
 {
        struct mgmt_ev_index_added ev;