From 9fbcbb455dd01abfad4f314b618ac51d566114cb Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Thu, 30 Dec 2010 00:18:33 +0200 Subject: [PATCH] Bluetooth: Add set_connectable management command This patch adds a set_connectable command as well as a corresponding event to the management interface. It's mainly useful for setting an adapter as connectable from a non-initialized state as well as setting an already initialized adapter as non-connectable (mostly useful for qualification purposes). Signed-off-by: Johan Hedberg Signed-off-by: Gustavo F. Padovan --- include/net/bluetooth/hci_core.h | 1 + include/net/bluetooth/mgmt.h | 17 +++++ net/bluetooth/hci_event.c | 16 ++-- net/bluetooth/mgmt.c | 122 ++++++++++++++++++++++++++++++- 4 files changed, 149 insertions(+), 7 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index ee5ec4f17a15..ba3dbe3188ed 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -676,6 +676,7 @@ int mgmt_index_added(u16 index); int mgmt_index_removed(u16 index); int mgmt_powered(u16 index, u8 powered); int mgmt_discoverable(u16 index, u8 discoverable); +int mgmt_connectable(u16 index, u8 connectable); /* HCI info for socket */ #define hci_pi(sk) ((struct hci_pinfo *) sk) diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 434dbcf28b6e..008acf54147a 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -47,6 +47,7 @@ struct mgmt_rp_read_info { __le16 index; __u8 type; __u8 powered; + __u8 connectable; __u8 discoverable; __u8 pairable; __u8 sec_mode; @@ -78,6 +79,16 @@ struct mgmt_rp_set_discoverable { __u8 discoverable; } __packed; +#define MGMT_OP_SET_CONNECTABLE 0x0007 +struct mgmt_cp_set_connectable { + __le16 index; + __u8 connectable; +} __packed; +struct mgmt_rp_set_connectable { + __le16 index; + __u8 connectable; +} __packed; + #define MGMT_EV_CMD_COMPLETE 0x0001 struct mgmt_ev_cmd_complete { __le16 opcode; @@ -117,3 +128,9 @@ struct mgmt_ev_discoverable { __le16 index; __u8 discoverable; } __packed; + +#define MGMT_EV_CONNECTABLE 0x0008 +struct mgmt_ev_connectable { + __le16 index; + __u8 connectable; +} __packed; diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index f55004af0558..a8a38f17ef78 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -274,18 +274,24 @@ static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) if (!status) { __u8 param = *((__u8 *) sent); + int old_pscan, old_iscan; - clear_bit(HCI_PSCAN, &hdev->flags); - clear_bit(HCI_ISCAN, &hdev->flags); + old_pscan = test_and_clear_bit(HCI_PSCAN, &hdev->flags); + old_iscan = test_and_clear_bit(HCI_ISCAN, &hdev->flags); if (param & SCAN_INQUIRY) { set_bit(HCI_ISCAN, &hdev->flags); - mgmt_discoverable(hdev->id, 1); - } else + if (!old_iscan) + mgmt_discoverable(hdev->id, 1); + } else if (old_iscan) mgmt_discoverable(hdev->id, 0); - if (param & SCAN_PAGE) + if (param & SCAN_PAGE) { set_bit(HCI_PSCAN, &hdev->flags); + if (!old_pscan) + mgmt_connectable(hdev->id, 1); + } else if (old_pscan) + mgmt_connectable(hdev->id, 0); } hci_req_complete(hdev, HCI_OP_WRITE_SCAN_ENABLE, status); diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 5fa3034fe79f..fc41cfc3f162 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -204,6 +204,7 @@ static int read_controller_info(struct sock *sk, unsigned char *data, u16 len) rp->type = hdev->dev_type; rp->powered = test_bit(HCI_UP, &hdev->flags); + rp->connectable = test_bit(HCI_PSCAN, &hdev->flags); rp->discoverable = test_bit(HCI_ISCAN, &hdev->flags); rp->pairable = test_bit(HCI_PSCAN, &hdev->flags); @@ -390,8 +391,7 @@ static int set_discoverable(struct sock *sk, unsigned char *data, u16 len) } if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, dev_id) || - mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, dev_id) || - hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE)) { + mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, dev_id)) { err = cmd_status(sk, MGMT_OP_SET_DISCOVERABLE, EBUSY); goto failed; } @@ -422,6 +422,61 @@ failed: return err; } +static int set_connectable(struct sock *sk, unsigned char *data, u16 len) +{ + struct mgmt_cp_set_connectable *cp; + struct hci_dev *hdev; + u16 dev_id; + u8 scan; + 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_CONNECTABLE, ENODEV); + + hci_dev_lock_bh(hdev); + + if (!test_bit(HCI_UP, &hdev->flags)) { + err = cmd_status(sk, MGMT_OP_SET_CONNECTABLE, ENETDOWN); + goto failed; + } + + if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, dev_id) || + mgmt_pending_find(MGMT_OP_SET_CONNECTABLE, dev_id)) { + err = cmd_status(sk, MGMT_OP_SET_CONNECTABLE, EBUSY); + goto failed; + } + + if (cp->connectable == test_bit(HCI_PSCAN, &hdev->flags)) { + err = cmd_status(sk, MGMT_OP_SET_CONNECTABLE, EALREADY); + goto failed; + } + + err = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, dev_id, data, len); + if (err < 0) + goto failed; + + if (cp->connectable) + scan = SCAN_PAGE; + else + scan = 0; + + err = hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + if (err < 0) + mgmt_pending_remove(MGMT_OP_SET_CONNECTABLE, dev_id); + +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; @@ -468,6 +523,9 @@ int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen) case MGMT_OP_SET_DISCOVERABLE: err = set_discoverable(sk, buf + sizeof(*hdr), len); break; + case MGMT_OP_SET_CONNECTABLE: + err = set_connectable(sk, buf + sizeof(*hdr), len); + break; default: BT_DBG("Unknown op %u", opcode); err = cmd_status(sk, opcode, 0x01); @@ -648,3 +706,63 @@ int mgmt_discoverable(u16 index, u8 discoverable) return ret; } + +static void connectable_rsp(struct pending_cmd *cmd, void *data) +{ + struct mgmt_cp_set_connectable *cp = cmd->cmd; + struct cmd_lookup *match = data; + struct sk_buff *skb; + struct mgmt_hdr *hdr; + struct mgmt_ev_cmd_complete *ev; + struct mgmt_rp_set_connectable *rp; + + if (cp->connectable != match->value) + return; + + skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + sizeof(*rp), GFP_ATOMIC); + if (!skb) + return; + + hdr = (void *) skb_put(skb, sizeof(*hdr)); + 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)); + put_unaligned_le16(MGMT_OP_SET_CONNECTABLE, &ev->opcode); + + rp = (void *) skb_put(skb, sizeof(*rp)); + put_unaligned_le16(cmd->index, &rp->index); + rp->connectable = cp->connectable; + + if (sock_queue_rcv_skb(cmd->sk, skb) < 0) + kfree_skb(skb); + + list_del(&cmd->list); + + if (match->sk == NULL) { + match->sk = cmd->sk; + sock_hold(match->sk); + } + + mgmt_pending_free(cmd); +} + +int mgmt_connectable(u16 index, u8 connectable) +{ + struct mgmt_ev_connectable ev; + struct cmd_lookup match = { connectable, NULL }; + int ret; + + put_unaligned_le16(index, &ev.index); + ev.connectable = connectable; + + mgmt_pending_foreach(MGMT_OP_SET_CONNECTABLE, index, + connectable_rsp, &match); + + ret = mgmt_event(MGMT_EV_CONNECTABLE, &ev, sizeof(ev), match.sk); + + if (match.sk) + sock_put(match.sk); + + return ret; +} -- 2.30.2